Television – Receiver circuitry
Patent
1995-06-06
1997-08-05
Lee, Michael H.
Television
Receiver circuitry
348736, 455 32, 455131, 4551901, 375348, H04N 544
Patent
active
056547749
ABSTRACT:
A tuner of for a digital satellite television receiver comprises a single conversion stage which produces an IF signal at a low enough frequency to permit a SAW filter to be used to perform symbol shaping as well as the normal IF filtering function. The local oscillator is controlled by a phase locked loop tuning control IC normally used to control the local oscillator of a tuner of a conventional broadcast or cable television receiver. In an exemplary embodiment for tuning RF signals provided by a block converter in the 950 to 1450 mHz frequency range, the IF has a center frequency of 140 mHz.
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Pugel Michael Anthony
Richter Kurt Joseph
Emanuel Peter M.
Lee Michael H.
Murrell Jeffrey S.
Thomson Consumer Electronics Inc.
Tripoli Joseph S.
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