Transmitting data with video
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United States of America Patent
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Jul 5, 1994
Grant Date -
N/A
app pub date -
Jun 14, 1991
filing date -
Jun 14, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Signal processors for permitting the transparent, simultaneous transmission and reception of a secondary data signal with a video signal in the video band is disclosed. The signal processor in the transmitter rasterizes the data at the horizontal scanning rate and modulates the data with a data carrier at a non-integral multiple of the horizontal scanning rate to obtain frequency interleaving. The data is transmitted during the active video portion of each video line.
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