|4875096||Encoding of audio and digital signals in a video signal|
Audio signals and digital commands are encoded into a standard raster format television signal recorded on a casette for play by a home video cassette unit. The audio signals are encoded in the displayable video as modulated carrier pulses separated by re...
|4786967||Interactive video apparatus with audio and video branching|
A system providing user interaction with a video display provided to a standard television set by a home video cassette unit employing a standard video cassette having a video signal recorded thereon, the video signal having four or more audio channels an...