Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1990-08-06
1992-09-01
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358189, 3581911, 358197, 358198, 4551891, 4551801, H04N 544
Patent
active
051444399
ABSTRACT:
A television receiver includes a single tuner for tuning both television channels and broadcast FM stations. The tuner is operated at a fixed gain setting in FM reception mode. The tuner serves as the first conversion stage of a double conversion FM receiver, wherein a self-oscillating mixer circuit serves as the second conversion stage. The arrangement operates at a specific and non-arbitrary first IF frequency. The second IF frequency is the television intercarrier sound IF frequency. The FM receiver is also capable of automatically receiving National Weather Service broadcasts on that one of NWS's seven allocated frequencies which is operating in a listener's area. The receiver provides an on-screen display of the currently tuned FM channel number.
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SAMS Photofact Schematic for the Dumont Model RA-119A television receiver, circa 1952.
An article in Funk-Technik, vol. 35, No. Jun. 1980, pp. 216-226.
Page 2-1 of RCA/GE Color Television Service Data CTC156/157.
Page 2-3 of RCA/GE Color Television Supplemental Service Data CTC156/157-S1.
Article in IEEE Transactions on Consumer Electronics, Feb. 1985, entitled TV Multichannel Sound-The BTSC System, by C. G. Eilers.
Television and Audio Handbook for Technicians and Engineers, by K. Blair Benson & Jerry C. Whitaker, pp. 9.34 to 9.37.
Groody James J.
Hsia Sherrie
Thomson Consumer Electronics Inc.
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