Visual Frame-Numbering for Electronic Video-Tape Editing
Michael L. Paull · Journal of the SMPTE · 1970
The visual frame-number generator gives the video-tape editor the same facility as his counterpart in the film industry — the ability to assemble final program material by eye. This is achieved by dubbing wanted takes onto a helical scan video-tape machine via a device which keys in the frame numbers derived from the code on the master material. The generator has no controls, everything being pre-set. The inputs are the commercial power lines, composite video, color or monochrome and of any line standard, and the binary-coded decimal (BCD) information obtained from the code on the master tape. The output is composite video with keyed visual frame numbers and a time display.