Development of Slide File (trademark): A digital store for TV stills

Slide File (TM) is designed to take the place of slide scanners in studios as the prime source of broadcast-captions and still pictures. It stores still pictures in electronic digital form and enables them to be selected for transmission by a simple cut or crossfade operation. Such a store provides a convenient means of handling still pictures generated using new electronic techniques as well as handling pictures derived from scanning sides. Slide File has an RGB input and two RGB output (Main and Preview), each fed from a YUV picture store. One or two 8" Winchester Disc Drives store 84 to 344 pictures with an access time of one second. One-quarter-inch Streaming Tape Cartridges provide longer term storage of up to 74 pictures each. The system may be controlled by up to 5 remote control panels. The 6809 control microprocessor may also be used to process the stored pictures to remove impairments commonly found when a picture is grabbed from a moving picture input or decoded from a composite (PAL/NTSC) input.