Video system for conveying digital and analog information
Digital video modulation and demodulation system
Document filing, updating and retrieval system
Video signal recorder/reproducer for recording and reproducing pulse signals
Single track audio-digital recorder and circuit for use therein having error correction
Apparatus for receiving encoded messages on the screen of a television receiver and for redisplay thereof on the same receiver screen in a readable format
PCM Recording and reproducing method providing for dropout compensation
ApplicationNo. 199624 filed on 05/27/1988
US Classes:348/552, COMBINED WITH DIVERSE ART DEVICE (E.G., COMPUTER, TELEPHONE)345/501, COMPUTER GRAPHIC PROCESSING SYSTEM348/479, During horizontal blanking710/100INTRASYSTEM CONNECTION (E.G., BUS AND BUS TRANSACTION PROCESSING)
ExaminersPrimary: Harkcom, Gary V.
Assistant: Bayerl, R.
Attorney, Agent or Firm
International ClassesG06F 003/00
AbstractA system for simultaneously using a video signal to provide a video picture and computer data. At the transmitting end, a video signal is digitized and then modified by substituting digital signals representative of computer data for those representative of video pixels. The modified signal is reconverted to an analog signal and transmitted to a receiver. The receiver displays the video picture corresponding to the modified signal and extracts the computer data so that they may be provided to the computer. The computer can thus be controlled by the computer data as the video picture is being displayed.