| 摘要 |
There is disclosed herein an economical method and system for transmitting color video information over relatively low bandwidth transmission facilities. Original color material such as color motion pictures, stills, or slides of data, news events, or the like, or live pickup of such events, is converted to field sequential video information through the use of passive field sequential pickup and sending equipment. As an example, images from a color motion picture film are picked up by a passive field sequential color camera. The camera employs color splitting optics which separate each film frame into color primary images which are directed to a single video pickup tube. The camera provides sequential color output signals representing each frame, each frame being represented by a sequence of blue, red, and green signals. These field sequential signals, although representing discrete colors from the original film, may be handled as black and white signals which are transmitted over a conventional low bandwidth transmission facility, such as a facsimile, telephone or teletype transmission channel. The transmitted signals are received at one or more receiving locations in a region, continent or the world. These signals are then recorded on film, preferably black and white for motion pictures and color for stills, by recording equipment, such as kinescope recording apparatus, or may be recorded on video tape for subsequent film recording. The resulting film is processed; and for color motion picture rendition may be employed in a projection and conversion system wherein the sequential pictorial information from the film is picked up and then converted to conventional color television standards for transmission to color television receivers and like display equipment. Several modifications are disclosed particularly for record and playback equipment and methods.
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