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Film

From Wikipedia, the free encyclopedia

Jump to: navigation, search

"Movie" and "Moving picture" redirect here. For other uses, see Movie, Moving Pictures and Film

Semi-protected

World cinema

     * African cinema

    * Asian cinema

     East Asian cinema

    South Asian cinema

    Southeast Asian cinema

    West Asian cinema

 

    * European cinema

    * Latin American cinema

    * North American cinema

    * Oceanian cinema

 A 16 mm spring-wound Bolex H16 Reflex camera, a popular introductory camera in film schools

 Film encompasses individual motion pictures, the field of film as an art form, and the motion picture industry. Films are produced by recording images from the world with cameras, or by creating images using animation techniques or special effects.

 Films are cultural artifacts created by specific cultures, which reflect those cultures, and, in turn, affect them. Film is considered to be an important art form, a source of popular entertainment and a powerful method for educating — or indoctrinating — citizens. The visual elements of cinema gives motion pictures a universal power of communication. Some films have become popular worldwide attractions by using dubbing or subtitles that translate the dialogue.

 Traditional films are made up of a series of individual images called frames. When these images are shown rapidly in succession, a viewer has the illusion that motion is occurring. The viewer cannot see the flickering between frames due to an effect known as persistence of vision, whereby the eye retains a visual image for a fraction of a second after the source has been removed. Viewers perceive motion due to a psychological effect called beta movement.

 The origin of the name "film" comes from the fact that photographic film (also called film stock) had historically been the primary medium for recording and displaying motion pictures. Many other terms exist for an individual motion picture, including picture, picture show, photo-play, flick, and most commonly, movie. Additional terms for the field in general include the big screen, the silver screen, the cinema, and the movies.

Contents

    * 1 History

    * 2 Theory

          o 2.1 Language

          o 2.2 Montage

          o 2.3 Criticism

    * 3 Industry

    * 4 Associated fields

    * 5 Terminology used regarding film

          o 5.1 Preview

          o 5.2 Trailer

          o 5.3 Film, or other art form?

    * 6 Education and Propaganda

    * 7 Production

          o 7.1 Crew

          o 7.2 Technology

          o 7.3 Independent

          o 7.4 Open content film

          o 7.5 Fan film

    * 8 Animation

    * 9 Venues

    * 10 Future state

    * 11 See also

    * 12 Notes

    * 13 References

    * 14 External links

 History

     Main article: History of film

 Preceding film by thousands of years, plays and dances had elements common to film, scripts, sets, costumes, production, direction, actors, audiences, storyboards, and scores. Much terminology later used in film theory and criticism applied, such as mise en scene (roughly, the entire visual picture at any one time). Moving visual and aural images were not recorded for replaying as in film.

 Near the year 1600, the camera obscura was perfected by della Porta. Light is inverted through a small hole or lens from outside, and projected onto a surface or screen, creating a moving image, but it is not preserved in a recording.

 In the 1860s, mechanisms for producing artificially created, two-dimensional images in motion were demonstrated with devices such as the zoetrope and the praxinoscope. These machines were outgrowths of simple optical devices (such as magic lanterns) and would display sequences of still pictures at sufficient speed for the images on the pictures to appear to be moving, a phenomenon called persistence of vision. Naturally the images needed to be carefully designed to achieve the desired effect, and the underlying principle became the basis for the development of film animation.

A frame from Roundhay Garden Scene, the world's earliest film, by Louis Le Prince, 1888

 With the development of celluloid film for still photography, it became possible to directly capture objects in motion in real time. Early versions of the technology sometimes required a person to look into a viewing machine to see the pictures which were separate paper prints attached to a drum turned by a handcrank. The pictures were shown at a variable speed of about 5 to 10 pictures per second, depending on how rapidly the crank was turned. Some of these machines were coin operated. By the 1880s the development of the motion picture camera allowed the individual component images to be captured and stored on a single reel, and led quickly to the development of a motion picture projector to shine light through the processed and printed film and magnify these "moving picture shows" onto a screen for an entire audience. These reels, so exhibited, came to be known as "motion pictures". Early motion pictures were static shots that showed an event or action with no editing or other cinematic techniques.

 Ignoring Dickson's early sound experiments (1894), commercial motion pictures were purely visual art through the late 19th century, but these innovative silent films had gained a hold on the public imagination. Around the turn of the twentieth century, films began developing a narrative structure by stringing scenes together to tell narratives. The scenes were later broken up into multiple shots of varying sizes and angles. Other techniques such as camera movement were realized as effective ways to portray a story on film. Rather than leave the audience in silence, theater owners would hire a pianist or organist or a full orchestra to play music fitting the mood of the film at any given moment. By the early 1920s, most films came with a prepared list of sheet music for this purpose, with complete film scores being composed for major productions.

A shot from Georges Méliès Le Voyage dans la Lune (A Trip to the Moon) (1902), an early narrative film.

 

The rise of European cinema was interrupted by the breakout of World War I while the film industry in United States flourished with the rise of Hollywood. However in the 1920s, European filmmakers such as Sergei Eisenstein, F. W. Murnau, and Fritz Lang, along with American innovator D. W. Griffith and the contributions of Charles Chaplin, Buster Keaton and others, continued to advance the medium. In the 1920s, new technology allowed filmmakers to attach to each film a soundtrack of speech, music and sound effects synchronized with the action on the screen. These sound films were initially distinguished by calling them "talking pictures", or talkies.

 

The next major step in the development of cinema was the introduction of so-called "natural" color. While the addition of sound quickly eclipsed silent film and theater musicians, color was adopted more gradually as methods evolved making it more practical and cost effective to produce "natural color" films. The public was relatively indifferent to color photography as opposed to black-and-white,[citation needed] but as color processes improved and became as affordable as black-and-white film, more and more movies were filmed in color after the end of World War II, as the industry in America came to view color as essential to attracting audiences in its competition with television, which remained a black-and-white medium until the mid-1960s. By the end of the 1960s, color had become the norm for film makers.

 

Since the decline of the studio system in the 1960s, the succeeding decades saw changes in the production and style of film. New Hollywood, French New Wave and the rise of film school educated independent filmmakers were all part of the changes the medium experienced in the latter half of the 20th century. Digital technology has been the driving force in change throughout the 1990s and into the 21st century.

 Theory

     Main article: Film theory

 Film theory seeks to develop concise and systematic concepts that apply to the study of film as art. It was started by Ricciotto Canudo's The Birth of the Sixth Art. Formalist film theory, led by Rudolf Arnheim, Béla Balázs, and Siegfried Kracauer, emphasized how film differed from reality, and thus could be considered a valid fine art. André Bazin reacted against this theory by arguing that film's artistic essence lay in its ability to mechanically reproduce reality not in its differences from reality, and this gave rise to realist theory. More recent analysis spurred by Lacan's psychoanalysis and Ferdinand de Saussure's semiotics among other things has given rise to psychoanalytical film theory, structuralist film theory, feminist film theory and others.

 Language

 Film is considered to have its own language. James Monaco wrote a classic text on film theory titled "How to Read a Film". Director Ingmar Bergman famously said, "[Andrei] Tarkovsky for me is the greatest [director], the one who invented a new language, true to the nature of film, as it captures life as a reflection, life as a dream." Examples of the language are a sequence of back and forth images of one actor's left profile speaking, followed by another actor’s right profile speaking, then a repetition of this, which is a language understood by the audience to indicate a conversation. Another example is zooming in on the forehead of an actor with an expression of silent reflection, then changing to a scene of a younger version of the actor, indicating the actor is having a memory of their own past.

 

Montage

     Main article: Montage

 Parallels to musical counterpoint have been developed into a theory of montage, extended from the complex superimposition of images in early silent film[citation needed] to even more complex incorporation of musical counterpoint together with visual counterpoint through mise en scene and editing, as in a ballet or opera; e.g., as illustrated in the gang fight scene of director Francis Ford Coppola’s film, Rumblefish.

 Criticism

 

    Main article: Film criticism

 

Film criticism is the analysis and evaluation of films. In general, these works can be divided into two categories: academic criticism by film scholars and journalistic film criticism that appears regularly in newspapers and other media.

 

Film critics working for newspapers, magazines, and broadcast media mainly review new releases. Normally they only see any given film once and have only a day or two to formulate opinions. Despite this, critics have an important impact on films, especially those of certain genres. Mass marketed action, horror, and comedy films tend not to be greatly affected by a critic's overall judgment of a film. The plot summary and description of a film that makes up the majority of any film review can still have an important impact on whether people decide to see a film. For prestige films such as most dramas, the influence of reviews is extremely important. Poor reviews will often doom a film to obscurity and financial loss.

 The impact of a reviewer on a given film's box office performance is a matter of debate. Some claim that movie marketing is now so intense and well financed that reviewers cannot make an impact against it. However, the cataclysmic failure of some heavily-promoted movies which were harshly reviewed, as well as the unexpected success of critically praised independent movies indicates that extreme critical reactions can have considerable influence. Others note that positive film reviews have been shown to spark interest in little-known films. Conversely, there have been several films in which film companies have so little confidence that they refuse to give reviewers an advanced viewing to avoid widespread panning of the film. However, this usually backfires as reviewers are wise to the tactic and warn the public that the film may not be worth seeing and the films often do poorly as a result.

 

It is argued that journalist film critics should only be known as film reviewers, and true film critics are those who take a more academic approach to films. This line of work is more often known as film theory or film studies. These film critics attempt to come to understand how film and filming techniques work, and what effect they have on people. Rather than having their works published in newspapers or appear on television, their articles are published in scholarly journals, or sometimes in up-market magazines. They also tend to be affiliated with colleges or universities.

 

Industry

 

    Main article: Film industry

 

The making and showing of motion pictures became a source of profit almost as soon as the process was invented. Upon seeing how successful their new invention, and its product, was in their native France, the Lumières quickly set about touring the Continent to exhibit the first films privately to royalty and publicly to the masses. In each country, they would normally add new, local scenes to their catalogue and, quickly enough, found local entrepreneurs in the various countries of Europe to buy their equipment and photograph, export, import and screen additional product commercially. The Oberammergau Passion Play of 1898[citation needed] was the first commercial motion picture ever produced. Other pictures soon followed, and motion pictures became a separate industry that overshadowed the vaudeville world. Dedicated theaters and companies formed specifically to produce and distribute films, while motion picture actors became major celebrities and commanded huge fees for their performances. Already by 1917, Charlie Chaplin had a contract that called for an annual salary of one million dollars.

 

In the United States today, much of the film industry is centered around Hollywood. Other regional centers exist in many parts of the world, such as Mumbai-centered Bollywood, the Indian film industry's Hindi cinema which produces the largest number of films in the world.[1] Whether the ten thousand-plus feature length films a year produced by the Valley pornographic film industry should qualify for this title is the source of some debate.[citation needed] Though the expense involved in making movies has led cinema production to concentrate under the auspices of movie studios, recent advances in affordable film making equipment have allowed independent film productions to flourish.

 

Profit is a key force in the industry, due to the costly and risky nature of filmmaking; many films have large cost overruns, a notorious example being Kevin Costner's Waterworld. Yet many filmmakers strive to create works of lasting social significance. The Academy Awards (also known as "the Oscars") are the most prominent film awards in the United States, providing recognition each year to films, ostensibly based on their artistic merits.

 

There is also a large industry for educational and instructional films made in lieu of or in addition to lectures and texts.

 

Associated fields

 

    Further information: Film history,  Film criticism, Film theory, Product placement, and Propaganda

 

Derivative academic Fields of study may both interact with and develop independently of filmmaking, as in film theory and analysis. Fields of academic study have been created that are derivative or dependent on the existence of film, such as film criticism, film history, divisions of film propaganda in authoritarian governments, or psychological on subliminal effects of a flashing soda can during a screening. These fields may further create derivative fields, such as a movie review section in a newspaper or a television guide. Sub-industries can spin off from film, such as popcorn makers, and toys. Sub- industries of pre-existing industries may deal specifically with film, such as product placement in advertising.

 

Terminology used regarding film

 

Most people use “film” and “movie” interchangeably. “Film” is more often used when considering artistic, theoretical, or technical aspects, as studies in a university class. “Movies” more often refers to entertainment or commercial aspects, as where to go for fun on a date. For example, a book titled “How to Read a Film” would be about the aesthetics or theory of film, while “Lets Go to the Movies” would be about the history of entertaining movies. “Motion pictures” or “Moving pictures” are films and movies. A “DVD”, “videotape”, “video”, or “vid” is a digital reproduction of an analogue film, or a product with all of the elements of an analogue film but made in an electromagnetic storage medium. “Film” and “video” may be used interchangeably when the video is of sufficient quality, or is the original medium of recording. “Silent films” need not be silent, but are films and movies without an audible dialogue, though they may have a musical soundtrack. “Talkies” refers to early movies or films having audible dialogue or analogue sound, not just a musical accompaniment. “Cinema” either broadly encompasses both films and movies, or is roughly synonymous with “Film”, both capitalized when referring to a category of art. The “silver screen” refers to classic black and white films before color, not to contemporary films without color.

 

The expression “Sight and Sound”, as in the film journal of the same name, means “film”. The following icons mean film - a “candle and bell”, as in the films Tarkovsky, of a segment of film stock, or a two faced Janus image, and an image of a movie camera in profile.

 

“Widescreen” and “Cinemascope” refers to a larger width to height in the frame, compared to an earlier historic aspect ratios. A “feature length film”, or “feature film”, is of a conventional full length, usually 60 minutes or more, and can commercially stand by itself without other films in a ticketed screening. A “short” is a film that is not as long as a feature length film, usually screened with other shorts, or preceding a feature length film. A “trailer” is a very short “short”, or advertisement, preceding a film. An “independent” is a film made outside of the conventional film industry.

 

A “screening” or “projection” is the projection of a film or video on a screen at a public or private theater, usually but not always of a film, but of a video or DVD when of sufficient projection quality. A “double feature” is a screening of two independent, stand-alone, feature films. A “viewing” is a watching of a film. A “showing” is a screening or viewing on an electronic monitor. “Sales” refers to tickets sold at a theater, or more currently, rights sold for individual showings. A “release” is the distribution and often simultaneous screening of a film A “preview is a screening in advance of the main release.

 

“Hollywood” may be used either as a pejorative adjective, shorthand for asserting an overly commercial rather than artistic intent or outcome, as in “too Hollywood”, or as a descriptive adjective to refer to a film originating with people who ordinarily work near Los Angeles.

 Expressions for Genres of film are sometimes used interchangeably for “film” in a specific context, such as a “porn” for a film with explicit sexual content, or “cheese” for films that are light, entertaining, and not highbrow.

 Preview

 A preview performance refers to a showing of a movie to a select audience, usually for the purposes of corporate promotions, before the public film premiere itself. Previews are sometimes used to judge audience reaction, which if unexpectedly negative, may result in recutting or even refilming certain sections (Audience response).

 Trailer

     Main article: Film trailer

 Trailers or previews are film advertisements for films that will be exhibited in the future at a cinema, on whose screen they are shown. The term "trailer" comes from their having originally been shown at the end of a film programme. That practice did not last long, because patrons tended to leave the theater after the films ended, but the name has stuck. Trailers are now shown before the film (or the A movie in a double feature program) begins.

 

Film, or other art form?

 

Film may be combined with performance art and still be considered or referred to as a “film”. For example, when there is a live musical accompaniment to a silent film. Another example is audience participation films, as at a midnight movies screening of The Rocky Horror Picture Show , where the audience dresses up in costume from the film and loudly does a karaoke-like reenactment along with the film. Performance art where film is incorporated as a component is usually not called film, but a film, which could stand-alone but is accompanied by a performance may still be referred to as a film.

 The act of making a film can, in and of itself, be considered a work of art, on a different level from the film itself, as in the films of Werner Herzog.

 Similarly, the playing of a film can be considered to fall within the realm of political protest art, as in the subtleties within the films of Tarkovsky. A “road movie” can refer to a film put together from footage from a long road trip or vacation.

 ducation and Propaganda

     Main articles: Education and Propaganda

 

Film is used for education and propaganda. When the purpose is primarily educational, a film is called an "educational film". Examples are recordings of lectures and experiments, or more marginally, a film based on a classic novel.

 

Film may be propaganda, in whole or in part, such as the films made by Leni Riefenstahl in Nazi Germany, US war film trailers during World War II, or artistic films made under Stalin by Eisenstein. They may also be works of political protest, as in the films of Wajda, or more subtly, the films of Andrei Tarkovsky.

 

The same film may be considered educational by some, and propaganda by others, such as some of the films of Michael Moore.

 

Production

 

    Main article: Filmmaking

 

The nature of the film determines the size and type of crew required during filmmaking. Many Hollywood adventure films need computer generated imagery (CGI), created by dozens of 3D modellers, animators, rotoscopers and compositors. However, a low-budget, independent film may be made with a skeleton crew, often paid very little. Also, an open source film may be produced through open, collaborative processes. Filmmaking takes place all over the world using different technologies, styles of acting and genre, and is produced in a variety of economic contexts that range from state-sponsored documentary in China to profit-oriented movie making within the American studio system.

 

A typical Hollywood-style filmmaking Production cycle is comprised of five main stages:

 

   1. Development

   2. Pre-production

   3. Production

   4. Post-production

   5. Distribution

 

This production cycle typically takes three years. The first year is taken up with development. The second year comprises preproduction and production. The third year, post-production and distribution.

 

Crew

 

    Main article: Film crew

 

A film crew is a group of people hired by a film company, employed during the "production" or "photography" phase, for the purpose of producing a film or motion picture. Crew are distinguished from cast, the actors who appear in front of the camera or provide voices for characters in the film. The crew interacts with but is also distinct from the production staff, consisting of producers, managers, company representatives, their assistants, and those whose primary responsibility falls in pre-production or post-production phases, such as writers and editors. Communication between production and crew generally passes through the director and his/her staff of assistants. Medium-to-large crews are generally divided into departments with well defined hierarchies and standards for interaction and cooperation between the departments. Other than acting, the crew handles everything in the photography phase: props and costumes, shooting, sound, electrics (i.e., lights), sets, and production special effects. Caterers (known in the film industry as "craft services") are usually not considered part of the crew.

 

Technology

 

Film stock consists of transparent celluloid, acetate, or polyester base coated with an emulsion containing light-sensitive chemicals. Cellulose nitrate was the first type of film base used to record motion pictures, but due to its flammability was eventually replaced by safer materials. Stock widths and the film format for images on the reel have had a rich history, though most large commercial films are still shot on (and distributed to theaters) as 35 mm prints.

 

Originally moving picture film was shot and projected at various speeds using hand-cranked cameras and projectors; though 1000 frames per minute (16⅔ frame/s) is generally cited as a standard silent speed, research indicates most films were shot between 16 frame/s and 23 frame/s and projected from 18 frame/s on up (often reels included instructions on how fast each scene should be shown)[2]. When sound film was introduced in the late 1920s, a constant speed was required for the sound head. 24 frames per second was chosen because it was the slowest (and thus cheapest) speed which allowed for sufficient sound quality. Improvements since the late 19th century include the mechanization of cameras — allowing them to record at a consistent speed, quiet camera design — allowing sound recorded on-set to be usable without requiring large "blimps" to encase the camera, the invention of more sophisticated filmstocks and lenses, allowing directors to film in increasingly dim conditions, and the development of synchronized sound, allowing sound to be recorded at exactly the same speed as its corresponding action. The soundtrack can be recorded separately from shooting the film, but for live-action pictures many parts of the soundtrack are usually recorded simultaneously.

 

As a medium, film is not limited to motion pictures, since the technology developed as the basis for photography. It can be used to present a progressive sequence of still images in the form of a slideshow. Film has also been incorporated into multimedia presentations, and often has importance as primary historical documentation. However, historic films have problems in terms of preservation and storage, and the motion picture industry is exploring many alternatives. Most movies on cellulose nitrate base have been copied onto modern safety films. Some studios save color films through the use of separation masters — three B&W negatives each exposed through red, green, or blue filters (essentially a reverse of the Technicolor process). Digital methods have also been used to restore films, although their continued obsolescence cycle makes them (as of 2006) a poor choice for long-term preservation. Film preservation of decaying film stock is a matter of concern to both film historians and archivists, and to companies interested in preserving their existing products in order to make them available to future generations (and thereby increase revenue). Preservation is generally a higher-concern for nitrate and single-strip color films, due to their high decay rates; black and white films on safety bases and color films preserved on Technicolor imbibition prints tend to keep up much better, assuming proper handling and storage.

 

Some films in recent decades have been recorded using analog video technology similar to that used in television production. Modern digital video cameras and digital projectors are gaining ground as well. These approaches are extremely beneficial to moviemakers, especially because footage can be evaluated and edited without waiting for the film stock to be processed. Yet the migration is gradual, and as of 2005 most major motion pictures are still recorded on film.

 

Independent

 

    Main article: Independent film

 

The Lumière Brothers

 

Independent filmmaking often takes place outside of Hollywood, or other major studio systems. An independent film (or indie film) is a film initially produced without financing or distribution from a major movie studio. Creative, business, and technological reasons have all contributed to the growth of the indie film scene in the late 20th and early 21st century.

 

On the business side, the costs of big-budget studio films also leads to conservative choices in cast and crew. There is a trend in Hollywood towards co-financing (over two-thirds of the films put out by Warner Bros. in 2000 were joint ventures, up from 10% in 1987).[3] A hopeful director is almost never given the opportunity to get a job on a big-budget studio film unless he or she has significant industry experience in film or television. Also, the studios rarely produce films with unknown actors, particularly in lead roles.

 

Before the advent of digital alternatives, the cost of professional film equipment and stock was also a hurdle to being able to produce, direct, or star in a traditional studio film.

 

But the advent of consumer camcorders in 1985, and more importantly, the arrival of high-resolution digital video in the early 1990s, have lowered the technology barrier to movie production significantly. Both production and post-production costs have been significantly lowered; today, the hardware and software for post-production can be installed in a commodity-based personal computer. Technologies such as DVDs, FireWire connections and non-linear editing system pro-level software like Adobe Premiere Pro, Sony Vegas and Apple's Final Cut Pro, and consumer level software such as Apple's Final Cut Express and iMovie make movie-making relatively inexpensive.

 

Since the introduction of DV technology, the means of production have become more democratized. Filmmakers can conceivably shoot and edit a movie, create and edit the sound and music, and mix the final cut on a home computer. However, while the means of production may be democratized, financing, distribution, and marketing remain difficult to accomplish outside the traditional system. Most independent filmmakers rely on film festivals to get their films noticed and sold for distribution. The arrival of internet-based video outlets such as YouTube and Veoh has further changed the film making landscape in ways that are still to be determined.

 

Open content film

 

    Main article: Open content film

 

An open content film is much like an independent film, but it is produced through open collaborations; its source material is available under a license which is permissive enough to allow other parties to create fan fiction or derivative works, than a traditional copyright. Like independent filmmaking, open source filmmaking takes place outside of Hollywood, or other major studio systems.

 

Fan film

 

    Main article: Fan film

 

A fan film is a film or video inspired by a film, television program, comic book or a similar source, created by fans rather than by the source's copyright holders or creators. Fan filmmakers have traditionally been amateurs, but some of the more notable films have actually been produced by professional filmmakers as film school class projects or as demonstration reels. Fan films vary tremendously in length, from short faux-teaser trailers for non-existent motion pictures to rarer full-length motion pictures.

 

Animation

 

    Main article: Animation

 

Animation is the technique in which each frame of a film is produced individually, whether generated as a computer graphic, or by photographing a drawn image, or by repeatedly making small changes to a model unit (see claymation and stop motion), and then photographing the result with a special animation camera. When the frames are strung together and the resulting film is viewed at a speed of 16 or more frames per second, there is an illusion of continuous movement (due to the persistence of vision). Generating such a film is very labour intensive and tedious, though the development of computer animation has greatly sped up the process.

 

File formats like GIF, QuickTime, Shockwave and Flash allow animation to be viewed on a computer or over the Internet.

 

Because animation is very time-consuming and often very expensive to produce, the majority of animation for TV and movies comes from professional animation studios. However, the field of independent animation has existed at least since the 1950s, with animation being produced by independent studios (and sometimes by a single person). Several independent animation producers have gone on to enter the professional animation industry.

 

Limited animation is a way of increasing production and decreasing costs of animation by using "short cuts" in the animation process. This method was pioneered by UPA and popularized by Hanna-Barbera, and adapted by other studios as cartoons moved from movie theaters to television.[4]

 

Although most animation studios are now using digital technologies in their productions, there is a specific style of animation that depends on film. Cameraless animation, made famous by moviemakers like Norman McLaren, Len Lye and Stan Brakhage, is painted and drawn directly onto pieces of film, and then run through a projector.

 

Venues

 

When it is initially produced, a feature film is often shown to audiences in a movie theater or cinema. The identity of the first theater designed specifically for cinema is a matter of debate; candidates include Tally's Electric Theatre, established 1902 in Los Angeles[5], and Pittsburgh's Nickelodeon, established 1905. [6] Thousands of such theaters were built or converted from existing facilities within a few years.[7] In the United States, these theaters came to be known as nickelodeons, because admission typically cost a nickel (five cents).

 

Typically, one film is the featured presentation (or feature film). Before the 1970s, there were "double features"; typically, a high quality "A picture" rented by an independent theater for a lump sum, and a "B picture" of lower quality rented for a percentage of the gross receipts. Today, the bulk of the material shown before the feature film consists of previews for upcoming movies and paid advertisements (also known as trailers or "The Twenty").

 

Historically, all mass marketed feature films were made to be shown in movie theaters. The development of television has allowed films to be broadcast to larger audiences, usually after the film is no longer being shown in theaters. Recording technology has also enabled consumers to rent or buy copies of films on VHS or DVD (and the older formats of laserdisc, VCD and SelectaVision — see also videodisc), and Internet downloads may be available and have started to become revenue sources for the film companies. Some films are now made specifically for these other venues, being released as made-for-TV movies or direct-to-video movies. The production values on these films are often considered to be of inferior quality compared to theatrical releases in similar genres, and indeed, some films that are rejected by their own studios upon completion are distributed through these markets.

 

The movie theater pays an average of about 50-55% of its ticket sales to the movie studio, as film rental fees.[8] The actual percentage starts with a number higher than that, and decreases as the duration of a film's showing continues, as an incentive to theaters to keep movies in the theater longer. However, today's barrage of highly marketed movies ensures that most movies are shown in first-run theaters for less than 8 weeks. There are a few movies every year that defy this rule, often limited-release movies that start in only a few theaters and actually grow their theater count through good word-of-mouth and reviews. According to a 2000 study by ABN AMRO, about 26% of Hollywood movie studios' worldwide income came from box office ticket sales; 46% came from VHS and DVD sales to consumers; and 28% came from television (broadcast, cable, and pay-per-view).[8]

 

Future state

 

While motion picture films have been around for more than a century, film is still a relative newcomer in the pantheon of fine arts. In the 1950s, when television became widely available, industry analysts predicted the demise of local movie theaters. Despite competition from television's increasing technological sophistication over the 1960s and 1970s, such as the development of color television and large screens, motion picture cinemas continued. In fact with the rise of television's predominance, film began to become more respected as an artistic medium by contrast due the low general opinion of the quality of average television content. In the 1980s, when the widespread availability of inexpensive videocassette recorders enabled people to select films for home viewing, industry analysts again wrongly predicted the death of the local cinemas.

 

In the 1990s and 2000s the development of digital DVD players, home theater amplification systems with surround sound and subwoofers, and large LCD or plasma screens enabled people to select and view films at home with greatly improved audio and visual reproduction. These new technologies provided audio and visual that in the past only local cinemas had been able to provide: a large, clear widescreen presentation of a film with a full-range, high-quality multi-speaker sound system. Once again industry analysts predicted the demise of the local cinema. Local cinemas will be changing in the 2000s and moving towards digital screens, a new approach which will allow for easier and quicker distribution of films (via satellite or hard disks), a development which may give local theaters a reprieve from their predicted demise.

 

The cinema now faces a new challenge from home video by the likes of a new DVD format Blu-ray, which can provide full HD 1080p video playback at near cinema quality. Video formats are gradually catching up with the resolutions and quality that film offers, 1080p in Blu-ray offers a pixel resolution of 1920×1080 a leap from the DVD offering of 720×480 and the paltry 330×480 offered by the first home video standard VHS. The maximum resolutions that film currently offers are 2485×2970 or 1420×3390, UHD, a future digital video format, will offer a massive resolution of 7680×4320, surpassing all current film resolutions. The only viable competitor to these new innovations is IMAX which can play film content at an extreme 10000×7000 resolution.

 

Despite the rise of all new technologies, the development of the home video market and a surge of online copyright infringement, 2007 was a record year in film that showed the highest ever box-office grosses. Many expected film to suffer as a result of the effects listed above but it has flourished, strengthening film studio expectations for the future.


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History of television

(From Wikipedia, the free encyclopedia)

The history of television technology can be divided along two lines: those developments that depended upon both mechanical and electronic principles, and those dependent only on electronic principles. From the latter descended all modern televisions, but these would not have been possible without the discoveries and insights garnered from the development of the electromechanical systems.

Contents

    * 1 Electromechanical television

    * 2 Electronic television

    * 3 Color television

    * 4 Broadcast television

          o 4.1 United States and Canada

          o 4.2 United States

          o 4.3 Canada

          o 4.4 France

          o 4.5 Germany

          o 4.6 United Kingdom

          o 4.7 Soviet Union (USSR)

          o 4.8 Later development

          o 4.9 Technological innovations

          o 4.10 Overview

    * 5 Television sets

    * 6 Television inventors/pioneers

    * 7 Television museums

    * 8 See also

    * 9 References

    * 10 Further reading

    * 11 External links

Electromechanical television

    Main article: Mechanical television

The origins of what would become today's television system can be traced back to the discovery of the photoconductivity of the element selenium by Willoughby Smith in 1873, the invention of a scanning disk by Paul Gottlieb Nipkow in 1884, John Logie Baird's demonstration of televised moving images in 1926 and Philo Farnsworth's Image dissector in 1927.

The 20-year old German university student Nipkow proposed and patented the first electromechanical television system in 1884,[1] although he never built a working model of the system. Nipkow's spinning disk design is credited with being the first television image rasterizer. Constantin Perskyi had coined the word television in a paper read to the International Electricity Congress at the International World Fair in Paris on August 25, 1900. Perskyi's paper reviewed the existing electromechanical technologies, mentioning the work of Nipkow and others. The photoconductivity of selenium and Nipkow's scanning disk were first joined for practical use in the electronic transmission of still pictures and photographs, and by the first decade of the 20th century halftone photographs, composed of equally spaced dots of varying size, were being transmitted by facsimile over telegraph and telephone lines as a newspaper service.

However, it wasn't until 1907 that developments in amplification tube technology made the design practical.[2] The first demonstration of the instantaneous transmission of still silhouette images was by Georges Rignoux and A. Fournier in Paris in 1909, using a rotating mirror-drum as the scanner, and a matrix of 64 selenium cells as the receiver.[3]

In 1911, Boris Rosing and his student Vladimir Kosma Zworykin created a television system that used a mechanical mirror-drum scanner to transmit, in Zworykin's words, "very crude images" over wires to the electronic Braun tube (cathode ray tube) in the receiver. Moving images were not possible because, in the scanner, "the sensitivity was not enough and the selenium cell was very laggy".

On March 25, 1925, Scottish inventor John Logie Baird gave a demonstration of televised silhouette images in motion at Selfridge's Department Store in London. AT&T's Bell Telephone Laboratories transmitted halftone still images of transparencies in May 1925. Charles Francis Jenkins was able to demonstrate on June 13, 1925, the transmission of the silhouette image of a toy windmill in motion from a naval radio station to his laboratory in Washington, using a lensed disk scanner with 48 lines per picture,[4] 16 pictures per second. But if television is defined as the live transmission of moving images with continuous tonal variation, Baird first achieved this privately on October 2, 1925. But strictly speaking, Baird had not yet achieved moving images on October 2. His scanner worked at only five images per second, below the threshold required to give the illusion of motion, usually defined as at least 12 images per second. By January, he had improved the scan rate to 12.5 images per second. Then he gave the world's first public demonstration of a working television system to members of the Royal Institution and a newspaper reporter on January 26, 1926 at his laboratory in London. Unlike later electronic systems with several hundred lines of resolution, Baird's vertically scanned image, using a scanning disk embedded with a double spiral of lenses, had only 30 lines, just enough to reproduce a recognizable human face.

In 1927, Baird transmitted a signal over 438 miles (705 km) of telephone line between London and Glasgow. In 1928, Baird's company (Baird Television Development Company / Cinema Television) broadcast the first transatlantic television signal, between London and New York, and the first shore-to-ship transmission. He also demonstrated an electromechanical color, infrared (dubbed "Noctovision"), and stereoscopic television, using additional lenses, disks and filters. In parallel, Baird developed a video disk recording system dubbed "Phonovision"; a number of the Phonovision recordings, dating back to 1927, still exist.[5] In 1929, he became involved in the first experimental electromechanical television service in Germany. In November 1929, Baird and Bernard Natan of Pathe established France's first television company, Television-Baird-Natan. In 1931, he made the first live transmission, of the Epsom Derby. In 1932, he demonstrated ultra-short wave television. Baird's electromechanical system reached a peak of 240 lines of resolution on BBC television broadcasts in 1936, before being discontinued in favor of a 405-line all-electronic system developed by Marconi-EMI.

Meanwhile in Soviet Russia, Leon Theremin had been developing a mirror drum-based television, starting with 16 lines resolution in 1925, then 32 lines and eventually 64 using interlacing in 1926, and as part of his thesis on June 7, 1926 he electrically transmitted and then projected near-simultaneous moving images on a five foot square screen.[4] By 1927 he achieved an image of 100 lines, a resolution that was not surpassed until 1931 by RCA, with 120 lines.

However, Herbert E. Ives of Bell Labs gave the most dramatic demonstration of television yet on April 7, 1927, when he field tested reflected-light television systems using small-scale (2 by 2.5 inches) and large-scale (24 by 30 inches) viewing screens over a wire link from Washington to New York City, and over-the-air broadcast from Whippany, New Jersey. The subjects, who included Secretary of Commerce Herbert Hoover, were illuminated by a flying-spot scanner beam that was scanned by a 50-aperture disk at 16 pictures per minute.

Electronic television

In 1911, engineer Alan Archibald Campbell-Swinton gave a speech in London, reported in The Times (UK), describing in great detail how distant electric vision could be achieved by using cathode ray tubes at both the transmitting and receiving ends. The speech, which expanded on a letter he wrote to the journal Nature in 1908, was the first iteration of the electronic television method that is still used today. Others had already experimented with using a cathode ray tube as a receiver, but the concept of using one as a transmitter was novel.[6] By the late 1920s, when electromechanical television was still being introduced, inventors Philo Farnsworth, Vladimir Zworykin and Hungarian Kalman Tihanyi were already working separately on versions of all-electronic transmitting tubes.

The decisive solution was first described in 1926 by Tihanyi, and appeared in patent applications for his "Radioskop" he filed in Hungary that same year. In 1928 Tihanyi was awarded patents for his inventions in both France and Great Britain.[7] He applied for patents in the United States in June of the following year, but the U.S. patent for his display tube would not be granted until October 1938, and the patent for his camera tube the following May.[8][9]

On September 7, 1927, Philo Farnsworth's Image Dissector camera tube transmitted its first image, a simple straight line, at his laboratory at 202 Green Street in San Francisco. [1] By 1928, Farnsworth had developed the system sufficiently to hold a demonstration for the press, televising a motion picture film. In 1929, the system was further improved by elimination of a motor generator, so that his television system now had no mechanical parts. That year, Farnsworth transmitted the first live human images with his system, including a three and a half-inch image of his wife Elma ("Pem") with her eyes closed (possibly due to the bright lighting required).

Farnsworth gave the world's first public demonstration of a complete all-electronic television system on 25 August 1934 at the Franklin Institute in Philadelphia. Other inventors had previously demonstrated components of such a system, or had shown an electronic system using still images or motion picture film. Manfred von Ardenne demonstrated an all-electronic television system using cathode ray tubes at the Berlin Radio Show in August 1931, but as he never built a camera tube, his system was limited to using the CRT as a flying spot scanner to transmit motion picture films and slides. Farnsworth became the first to use all-electronic cameras and receivers to transmit and receive live, moving images. Unfortunately, his cameras needed too much light, so his work came to a stop.

Vladimir Zworykin was also experimenting with the cathode ray tube to create and show images. While at Westinghouse in 1923, he developed an electronic camera tube. But in a 1925 demonstration, the image was dim, had low contrast and poor definition, and was stationary.[10] The tube never got beyond the laboratory stage, but RCA (which had acquired the Westinghouse patent) believed the patent on Farnsworth's 1927 image dissector was written so broadly that it would exclude any other electronic formation of an image. And so RCA, armed with Zworykin's 1923 patent application, filed a patent interference suit against Farnsworth. The U.S. Patent Office examiner disagreed in a 1935 decision, finding priority of invention for Farnsworth against Zworykin. Farnsworth claimed that Zworykin's 1923 system would be unable to produce an electrical image of the type to challenge to Farnsworth's patent. Zworykin was unable or unwilling to introduce in evidence a working model of his tube that was based on his 1923 patent description. In October 1939, after losing an appeal in the courts and wishing to go forward with the commercial manufacturing of television equipment, RCA agreed to pay Farnsworth US$1 million (the equivalent of $13.8 million in 2006) over a ten-year period, in addition to license payments, to use Farnsworth's patents.[11]

However, while working at RCA in 1931, Zworykin had designed an improved camera tube based on the technology developed by Tihanyi. Zworykin called the new tube the iconoscope, and it would be the primary type of camera tube used in the U.S. until replaced by the image orthicon tube in 1946.[12] Tihanyi's patents for both his camera and display tubes would eventually be acquired by RCA.[8][9]

In Britain Isaac Shoenberg used Zworykin's idea to develop Marconi-EMI's own Emitron tube, which formed the heart of the cameras they designed for the BBC. Using this, on November 2, 1936 a 405 line service was started from studios at Alexandra Palace, and transmitted from a specially-built mast atop one of the Victorian building's towers; it alternated for a short time with Baird's mechanical system in adjoining studios, but was more reliable and visibly superior. So began the world's first high-definition regular service. The mast is still in use today.[citation needed]

Color television

    Main article: Color television

Broadcast television

    Further information: Timeline of the introduction of television in countries

United States and Canada

Below is a list showing when U.S. states and Canadian provinces established their first commercially licensed television stations.

    * Alabama (1949)

    * Alberta (1954)

    * Territory of Alaska (1953)

    * American Samoa (1964)

    * Arizona (1949)

    * Arkansas (1953)

    * British Columbia (1953)

    * California (1947)

    * Colorado (1952)

    * Connecticut (1948)

    * Delaware (1949)

    * Florida (1949)

    * Georgia (1948)

    * Guam (1956)

    * Territory of Hawaii (1952)

    * Idaho (1953)

    * Illinois (1943)

    * Indiana (1949)

    * Iowa (1949)          

    * Kansas (1953)

    * Kentucky (1948)

    * Louisiana (1948)

    * Maine (1953)

    * Manitoba (1954)

    * Maryland (1947)

    * Massachusetts (1947)

    * Michigan (1947)

    * Minnesota (1948)

    * Mississippi (1953)

    * Missouri (1947)

    * Montana (1953)

    * Nebraska (1949)

    * Nevada (1953)

    * New Brunswick (1954)

    * New Hampshire (1954)

    * New Jersey (1948)

    * New Mexico (1948)

    * New York (1941)    

    * Newfoundland (1955)

    * North Carolina (1949)

    * North Dakota (1953)

    * Northwest Territories (1972)

    * Nova Scotia (1954)

    * Ohio (1943)

    * Oklahoma (1949)

    * Ontario (1952)

    * Oregon (1952)

    * Pennsylvania (1941)

    * Prince Edward Island (1955)

    * Puerto Rico (1954)

    * Quebec (1952)

    * Rhode Island (1949)

    * Saskatchewan (1954)

    * South Carolina (1953)

    * South Dakota (1953)

    * Tennessee (1948)

    * Texas (1948)

    * Utah (1948)

    * Vermont (1954)

    * Virginia (1947)

    * U.S Virgin Islands (1961)

    * Washington (1948)

    * Washington D.C (1945)

    * West Virginia (1949)

    * Wisconsin (1947)

    * Wyoming (1954)

    * Yukon (1972)

Television aerial on a rooftop

Television aerial on a rooftop

United States

The first regularly scheduled television service in the United States began on July 2, 1928. The Federal Radio Commission authorized C.F. Jenkins to broadcast from experimental station W3XK in Wheaton, Maryland, a suburb of Washington, D.C. But for at least the first eighteen months, only silhouette images from motion picture film were broadcast.

Hugo Gernsback's New York City radio station began a regular, if limited, schedule of live television broadcasts on August 14, 1928, using 48-line images. Simultaneously, Gernsback published Television, the world's first magazine about the medium.

General Electric's experimental station in Schenectady, New York, on the air sporadically since January 13, 1928, was able to broadcast reflected-light, 48-line images via shortwave as far as Los Angeles, and by September was making four television broadcasts weekly. It is considered to be the direct predecessor of current television station WRGB.

General Broadcasting System's WGBS radio and W2XCR television aired their regular broadcasting debut in New York City on April 26, 1931, with a special demonstration set up in Aeolian Hall at Fifth Avenue and Fifty-fourth Street. Thousands waited to catch a glimpse of the Broadway stars who appeared on the six-inch (15 cm) square image, in an evening event to publicize a weekday programming schedule offering films and live entertainers during the four-hour daily broadcasts. Appearing were boxer Primo Carnera, actors Gertrude Lawrence, Louis Calhern and Lionel Atwill, WHN announcer Nils Granlund, the Forman Sisters, and a host of others.[13]

CBS's New York City station W2XAB began broadcasting their first regular seven days a week television schedule on July 21, 1931, with a 60-line electromechanical system. The first broadcast included Mayor Jimmy Walker, the Boswell Sisters, Kate Smith, and George Gershwin. The service ended in February 1933. However, CBS considers it to be an ancestor of WCBS-TV, which first went on the air on July 1, 1941 as one of the first two commercially licensed television stations in the country (the other being the National Broadcasting Company's WNBC). Don Lee Broadcasting's station W6XAO in Los Angeles went on the air in December 1931. Using the UHF spectrum, it broadcast a regular schedule of filmed images every day except Sundays and holidays for several years. It later moved to VHF Channel 1 before World War 2, and to Channel 2 in the post-war television realignment. It was commercially licensed in 1947 as KTSL and is the direct ancestor of current station KCBS-TV.

By 1935, low-definition electromechanical television broadcasting had ceased in the United States except for a handful of stations run by public universities that continued to 1939. The Federal Communications Commission saw television in the continual flux of development with no consistent technical standards, hence all such stations in the U.S. were granted only experimental and not commercial licenses, hampering television's economic development. Just as importantly, Philo Farnsworth's August 1934 demonstration of an all-electronic system at the Franklin Institute in Philadelphia pointed out the direction of television's future.

On June 15, 1936, Don Lee Broadcasting began a month-long demonstration of high definition (240+ line) television in Los Angeles on W6XAO (later KTSL) with a 300-line image from motion picture film. By October, W6XAO was making daily television broadcasts of films. RCA demonstrated in New York City a 343-line electronic television broadcast, with live and film segments, to its licensees on July 7, 1936, and made its first public demonstration to the press on November 6. Irregularly scheduled broadcasts continued through 1937 and 1938.[14] NBC began regularly scheduled broadcasts in New York on April 30, 1939 with a broadcast of the opening of the 1939 New York World's Fair. By June 1939, regularly scheduled 441-line electronic television broadcasts were available in New York City and Los Angeles, and by November on General Electric's station in Schenectady. From May through December 1939, the New York City NBC station (W2XBS) of General Electric broadcast twenty to fifty-eight hours of programming per month, Wednesday through Sunday of each week. The programming was 33% news, 29% drama, and 17% educational programming, with an estimated 2,000 receiving sets by the end of the year, and an estimated audience of five to eight thousand. A remote truck could cover outdoor events from up to 10 miles (16 km) away from the transmitter, which was located atop the Empire State Building. Coaxial cable was used to cover events at Madison Square Garden. The coverage area for reliable reception was a radius of 40 to 50 miles (80 km) from the Empire State Building, an area populated by more than 10,000,000 people (Lohr, 1940).

The FCC adopted NTSC television engineering standards on May 2, 1941, calling for 525 lines of vertical resolution, 30 frames per second with interlaced scanning, 60 fields per second, and sound carried by frequency modulation. Sets sold since 1939 which were built for slightly lower resolution could still be adjusted to receive the new standard. (Dunlap, p31). The FCC saw television ready for commercial licensing, and the first such licenses were issued to NBC and CBS owned stations in New York on July 1, 1941, followed by Philco's station in Philadelphia, then licensed as WPTZ and eventually licensed again as the present-day KYW-TV. After the U.S. entry into World War II, the FCC reduced the required minimum air time for commercial television stations from 15 hours per week to 4 hours. Most TV stations suspended broadcasting. On the few that remained, programs included entertainment such as boxing and plays, events at Madison Square Garden, and illustrated war news as well as training for air raid wardens and first aid providers. In 1942, there were 5,000 sets in operation, but production of new TVs, radios, and other broadcasting equipment for civilian purposes was suspended from April 1942 to August 1945 (Dunlap).

Canada

The Canadian Broadcasting Corporation (CBC) adopted the American NTSC 525-line B/W 60 field per second system as its broadcast standard. It began television broadcasting in Canada in September 1952. The first broadcast was on September 6, 1952 from its Montreal, Quebec station CBFT. The premiere broadcast was bilingual, spoken in English and French. Two days later, on September 8, 1952, the Toronto, Ontario station CBLT went on the air. This became the English-speaking flagship station for the country, while CBFT became the French language flagship after a second English language station was licensed to CBC in Montreal later in the decade. The CBC�s first privately owned affiliate television station, CKSO in Sudbury, Ontario, launched in October 1953 (at the time, all private stations were expected to affiliate with the CBC, a condition that was relaxed in 1960�61 when CTV, Canada's second national English language network, was formed).

France

In November 1929, Bernard Natan established France's first television company, Television-Baird-Natan. On April 14, 1931, was the first transmission with a thirty-line standard by Rene Barthelemy. On December 6, 1931, Henri de France created the Compagnie Generale de Television (CGT). In December 1932, Bathelemy carried out an experimental program in black and white (definition: 60 lines) one hour per week, "Paris Television", which gradually became daily from early 1933.

The first official channel of French television appeared on February 13, 1935, date of the official inauguration of television in France which was broadcast in 60 lines from 8:15 to 8:30 pm. The program was of the actress Beatrice Bretty from the studio of Radio-PTT Vision at 103 rue de Grenelle in Paris. The broadcast had a range of 100 km (62 miles). On November 10, George Mandel, Minister of PTT, inaugurated the first broadcast in 180 lines from the transmitter of the Eiffel tower. On the 18th, Susy Wincker, first announcer since June, carried out a demonstration for the press from 5:30 to 7:30 pm. Broadcasts became regular from January 4, 1937 from 11:00 to 11:30 am and 8:00 to 8:30 pm during the week, and from 5:30 to 7:30 pm on Sundays. In July 1938, a decree defined for three years a standard of 455 lines VHF (whereas three standards are used for the experiments: 441 lines for Gramont, 450 lines for the Compagnie des Compteurs and 455 for Thomson). In 1939, there were about only 200 to 300 individual television sets, some of which were also available in a few public places.

With the entry of France into World War II the same year, broadcasts ceased and the transmitter of the Eiffel tower was sabotaged. On September 3, 1940, French television was seized by the German occupation forces. A technical agreement was signed by the Compagnie des Compteurs and Telefunken, and a financing agreement for the resuming of the service is signed by German Ministry of Post and Radiodiffusion Nationale (Vichy's radio). On May 7, 1943 at 3:00 evening broadcasts. The first broadcast of Fernsehsender Paris (Paris Television) was transmitted from rue Cognac-Jay. These regular broadcasts (5 1/4 hours a day) lasted until August 16, 1944. One thousand 441-line sets, most of which were installed in soldiers' hospitals, picked up the broadcasts.

In 1944, Rene Barthelemy developed an 819-line television standard. During the years of occupation, Barthelemy reached 1015 and even 1042 lines. On October 1, 1944, television service resumed after the liberation of Paris. The broadcasts were transmitted from the Cognacq-Jay studios. In October 1945, after repairs, the transmitter of the Eiffel Tower was back in service. On November 20, 1948, Mitterrand decreed a broadcast standard of 819 lines; broadcasting begins at the end of 1949 in this definition. France is the only European country to adopt it (others will choose 625 lines).

Germany

Electromechanical broadcasts began in Germany in 1929, but were without sound until 1934. Network electronic service started on March 22, 1935, on 180 lines using telecine transmission of film, intermediate film system, or cameras using the Nipkow Disk. Transmissions using cameras based on the iconoscope began on January 15, 1936. The Berlin Summer Olympic Games were televised, using both fully electronic iconoscope-based cameras and intermediate film cameras, to Berlin and Hamburg in August 1936. Twenty-eight public television rooms were opened for anybody who did not own a television set. The Germans had a 441-line system on the air in February 1937, and during World War II brought it to France, where they broadcast from the Eiffel Tower. The American Armed Forces Radio Network at the end of World War II, wishing to provide US TV programming to the occupation forces in Germany, used US TV receivers made to operate at 525 lines and 60 fields. US broadcast equipment was modified; they changed the vertical frequency to 50 Hz to avoid power line wiggles, changed the horizontal frequency from 15,750 Hz to 15,625 Hz a 0.5 microsecond change in the length of a line. With this signal, US TV receivers with only an adjustment to the vertical hold control had a 625 line, 50 field scan, which became the German standard.

United Kingdom

The first British television broadcast was made by Baird Television's electromechanical system over the BBC radio transmitter in September 1929. Baird provided a limited amount of programming five days a week by 1930. On August 22, 1932, BBC launched its own regular service using Baird's 30-line electromechanical system, continuing until September 11, 1935. On November 2, 1936 the BBC began broadcasting a dual-system service, alternating between Marconi-EMI's 405-line standard and Baird's improved 240-line standard, from Alexandra Palace in London, making the BBC Television Service (now BBC One) the world's first regular high-definition television service. The government, on advice from a special advisory committee, decided that Marconi-EMI's electronic system gave the superior picture, and the Baird system was dropped in February 1937. TV broadcasts in London were on the air an average of four hours daily from 1936 to 1939. There were 12,000 to 15,000 receivers. Some sets in restaurants or bars might have 100 viewers for sport events (Dunlap, p56).The outbreak of the Second World War caused the BBC service to be suspended on September 1, 1939, resuming from Alexandra Palace on June 7, 1946.

The first live broadcast from the European continent was made on 27 August 1950. The first live signal to Britain from the United States was broadcast via the Telstar satellite on 23 July 1962.

Soviet Union (USSR)

The Soviet Union began offering 30-line electromechanical test broadcasts in Moscow on October 31, 1931, and a commercially manufactured television set in 1932. The first experimental transmissions of electronic television took place in Moscow on March 9, 1937, using equipment manufactured and installed by RCA. Regular broadcasting began on December 31, 1938.

Later development

The first regular television transmissions in Canada began in 1952 when the CBC put two stations on the air, one in Montreal, Quebec on September 6, and another in Toronto, Ontario two days later.

Technological innovations

The first live transcontinental television broadcast took place in San Francisco, California with U.S. President Harry Truman's speech at the Japanese Peace Treaty Conference on September 4, 1951, using AT&T's transcontinental cable and microwave radio relay system.[15][16][17] The first live coast-to-coast commercial television broadcast in the U.S. took place on November 18, 1951 on the premiere of See It Now, which showed a split screen view of the Brooklyn Bridge in New York City and the Golden Gate Bridge in San Francisco. In 1958, the CBC completed the longest television network in the world, from Sydney, Nova Scotia to Victoria, British Columbia. Reportedly, the first continuous live broadcast of a breaking news story in the world was conducted by the CBC during the Springhill Mining Disaster which began on October 23 of that year.

Programming is broadcast on television stations (sometimes called channels). At first, terrestrial broadcasting was the only way television could be distributed. Because bandwidth was limited, government regulation was normal.

In the U.S., the Federal Communications Commission in 1941 allowed stations to broadcast advertisements, but insisted on public service programming commitments as a requirement for a license. By contrast, the United Kingdom chose a different route, imposing a television licence fee on owners of television reception equipment, to fund the BBC, which had public service as part of its Royal Charter.

The development of cable and satellite means of distribution in the 1970s pushed businessmen to target channels towards a certain audience, and enabled the rise of subscription-based television channels, such as HBO and Sky.

Overview

Practically every country in the world now has developed at least one television channel. Television has grown up all over the world, enabling every country to share aspects of their culture and society with others.

Television sets

In television's electromechanical era, commercially made television sets were sold from 1928 to 1934 in the United Kingdom,[18] United States, and Russia.[19] The earliest commercially made sets sold by Baird in the UK in 1928 were radios with the addition of a television device consisting of a neon tube behind a mechanically spinning disk (the Nipkow disk) with a spiral of apertures that produced a red postage-stamp size image, enlarged to twice that size by a magnifying glass. The Baird "Televisor" was also available without the radio. The Televisor sold in 1930�1933 is considered the first mass-produced set, selling about a thousand units.[20]

The first commercially made electronic television sets with cathode ray tubes were manufactured by Telefunken in Germany in 1934,[21][22] followed by other makers in France (1936),[23] Britain (1936),[24] and America (1938).[25][26] The cheapest of the pre-World War II factory-made American sets, a 1938 image-only model with a 3-inch (8 cm) screen, cost US$125, the equivalent of US$1,863 in 2007. The cheapest model with a 12-inch (30 cm) screen was $445 ($6,633).[27]

An estimated 19,000 electronic television sets were manufactured in Britain, and about 1,600 in Germany, before World War II. About 7,000�8,000 electronic sets were made in the U.S.[28] before the War Production Board halted manufacture in April 1942, production resuming in August 1945.

Television usage in the United States skyrocketed after World War II with the lifting of the manufacturing freeze, war-related technological advances, the gradual expansion of the television networks westward, the drop in set prices caused by mass production, increased leisure time, and additional disposable income. While only 0.5% of U.S. households had a television set in 1946, 55.7% had one in 1954, and 90% by 1962.[29] In Britain, there were 15,000 television households in 1947, 1.4 million in 1952, and 15.1 million by 1968.

For many years different countries used different technical standards. France initially adopted the German 441-line standard but later upgraded to 819 lines, which gave the highest picture definition of any analogue TV system, approximately double the resolution of the British 405-line system. However this is not without a cost, in that the cameras need to produce four times the pixel rate (thus quadrupling the bandwidth), from pixels one-quarter the size, reducing the sensitivity by an equal amount. In practice the 819-line cameras never achieved anything like the resolution that could theoretically be transmitted by the 819 line system, and for color, France reverted to the same 625 lines as the European CCIR system.

Eventually most of Europe switched to the 625-line PAL standard, once more following Germany's example, with France adopting SECAM. Meanwhile in North America the original NTSC 525-line standard from 1941 was retained, although analog television will be totally replaced for broadcast purposes in February 2009. 
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