System for data channel level control
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 13, 1992
Grant Date -
N/A
app pub date -
Mar 20, 1990
filing date -
Mar 20, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Automatic level calibration apparatus for transmitting data from a cable television terminal to the headend of a cable television system comprises programmable transmitter apparatus of the terminal, programmable receiving apparatus at the headend and a calibration controller. Responsive to an addressed command from the headend, the programmable transmitter apparatus returns a sequence of levels at a particular calibration frequency. The programmable receiver apparatus determines an indication of the received signal strength of each of the levels of the sequence of levels. The controller determines an optimum level for transmissions from the terminal.
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Family
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Cited Art Landscape
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