Information transmission during first-equalizing pulse interval in television
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United States of America Patent
Stats
-
Jun 15, 1982
Grant Date -
N/A
app pub date -
Nov 14, 1980
filing date -
Jul 1, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A teletext system transmits auxiliary information before the vertical sync pulse in the vertical blanking interval to avoid interference to the normal transmitted picture. At the transmitter a time gap is placed in the auxiliary information to allow for the equalizing pulses, while at the receiver the gap is removed. One, two, or all three lines that occur before the vertical sync pulse in the vertical blanking interval can be used to transmit the auxiliary teletext information signals.
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Cited Art Landscape
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