Tuning system for CATV terminal

Details Tuning system for CATV terminal Tuning system for CATV terminal

1979-09-11

1982-02-23

Ng, Jin F.

Telecommunications

Interference signal transmission

358 86, H04H 104, H04N 710

Patent

active

043172156

ABSTRACT:
In a CATV system, channel identifying data is incorporated in each transmitted channel, and subscriber terminals return such data to the CATV center to indicate the channel actually being received. Further, the channel identifying data is compared to the channel selected, and when a proper comparison exists a sweep voltage is held at a predetermined level for the particular channel, to control frequency conversion at the terminal.

REFERENCES:
patent: 3733430 (1973-04-01), Thompson et al.
patent: 3885089 (1975-05-01), Callais
patent: 3978411 (1976-08-01), Sakamoto
patent: 3988681 (1976-10-01), Schurmann
patent: 4074310 (1978-02-01), Hurney et al.
patent: 4077006 (1978-02-01), Nicholson
patent: 4156847 (1979-05-01), Tazawa
patent: 4207529 (1980-06-01), Amaya
Two Way Applications for Cable Television Systems in the '70s, by R. Jurgen, An IEEE Spectrum Applications Report, IEEE Spectrum, Nov. 1971, pp. 39-54.

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