Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1981-07-01
1982-12-28
Martin, John C.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
3581931, H04N 550
Patent
active
043665020
ABSTRACT:
A tuning system of a television receiver of the type which changes the magnitude of a tuning voltage until an RF carrier corresponding to a television channel is located includes channel identification apparatus for generating a vertical tuning bar at a predetermined height and having a horizontal position determined by the magnitude of the tuning voltage until a carrier is detected and after a carrier is detected gradually changing its height until it disappears to provide a positive indication to a viewer that a carrier has been detected.
REFERENCES:
patent: 2194516 (1940-03-01), Anderson
patent: 2904630 (1959-09-01), Bruch et al.
patent: 2990447 (1961-06-01), Stark, Jr. et al.
patent: 3003029 (1961-10-01), Tults et al.
patent: 3591710 (1971-07-01), Uetake et al.
patent: 4214273 (1980-07-01), Brown
patent: 4241361 (1980-12-01), Kamiya
"The Clock Module" by W. Clas & P. W. Becker published in the IEEE Transactions on Consumer Electronics, vol. CE-25, Aug. 1979, derived from an article published in Grundig Technische Informationen, vol. 23, No. 3, pp. 741-749, 1976.
"Der Uhr-Baustein" published in Grundig Technische Informationen, 3/76, by W. Clas & P. W. Becker.
"EPM: A New Tuning System on a Single Chip Including Non-volatile Memory", by G. Caironi, published in IEEE Transactions on Consumer Electronics, vol. CE-25, Aug. 1979, pp. 606-620.
Circuit diagrams for the Hitachi model numbers C6-600 and C6-630 television receivers and a Sony receiver, believed to be known by model number KV-400.
"Der Uhr-Baustein" (The Clock Module) by W. Clas & P. W. Becker, published in Grundig Technische Informationen, vol. 23, No. 3, 1976, pp. 741-749.
Emanuel P. M.
Martin John C.
Rasmussen P. J.
RCA Corporation
Whitacre E. M.
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