04667243 is referenced by 30 patents and cites 12 patents.

A television (TV) receiving system includes a first TV receiver for receiving TV signals in a first range of frequencies, such as are used for cable, VHF and UHF broadcasting including a frequency synthesizer type local oscillator. The frequency synthesizer uses a voltage controlled oscillator (VCO) controlled by a tuning voltage responsive to a first frequency feedback signal. The receiver includes a coupling arrangement for adapting the receiving system for use with an external plug-in unit including a second TV receiver for receiving TV signals in a second range of frequencies, such as are used for direct broadcast satellite (DBS) signals. The second TV receiver provides a second frequency feedback signal. The receiving system includes a multiplexer for selectively coupling one of the first and second frequency feedback signals to the frequency synthesizer for controlling the VCO.

Title
Television receiver for direct broadcast satellite signals
Application Number
6/793197
Publication Number
4667243
Application Date
October 31, 1985
Publication Date
May 19, 1987
Inventor
David J Carlson
Indianapolis
IN, US
Harold Blatter
Indianapolis
IN, US
Agent
Thomas F Lenihan
Adel A Ahmed
Peter M Emanuel
Assignee
RCA Corporation
NJ, US
IPC
H04B 1/26
H04N 7/18
H04N 5/50
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