Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1990-03-20
1992-10-13
Eisenzopf, Reinhard J.
Facsimile and static presentation processing
Static presentation processing
Attribute control
455 71, 455 51, 455 61, 455 671, H04B 1700, H04H 102
Patent
active
051555905
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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Beyers, II Robert J.
Bramhall Charles R.
Durden Gregory S.
Edwards Robert J.
Haman, Jr. Ray T.
Eisenzopf Reinhard J.
Marvin William A.
Pham Chi H.
Scientific-Atlanta, Inc.
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