Television – Format – Including additional information
Patent
1995-09-07
1996-09-10
Kostak, Victor R.
Television
Format
Including additional information
348434, 348436, 348476, 348486, H04N 708
Patent
active
055550240
ABSTRACT:
An NTSC television signal transmitter also transmits through the same transmission channel a suppressed data carrier having a frequency differing from that of video carrier, having a symbol rate that is a multiple of horizontal scanning rate of video signal, having data frames occurring at a data frame rate that is the same as the video frame rate, and transmitting the symbols transmitted in each of alternate data frames in opposite phase during the next data frame. The data carrier has no image on the other side of the video carrier and preferably its modulation spectrum overlaps the video carrier. A digital-signal receiver can recover data from such a data carrier buried in an NTSC television signal, using frame-comb filtering to separate data from interfering video signal.
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Flynn Nathan J.
Kostak Victor R.
Samsung Electronics Co,. Ltd.
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