Tuning display for a television receiver

Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry

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Details

358183, H04N 550

Patent

active

043909027

ABSTRACT:
A television (TV) receiver which receives TV signals in a plurality of TV frequency bands includes apparatus for developing an accentuated and uncontaminated on-screen tuning indication. Specifically, a blanking device is responsive to a tuning signal for eliminating the display of a portion of the TV picture for the duration of a pulse signal. The pulse signal is delayed in time relative to a deflection signal by a time related to the tuning signal so that a blanked bar is generated in the TV picture. A tuning indicator device causes a predetermined display unaffected by the TV picture during the blanked portion of the TV picture.

REFERENCES:
patent: 3812285 (1974-05-01), Miyata et al.
patent: 3911418 (1975-10-01), Takeda
patent: 3984828 (1976-10-01), Beyers
patent: 4025945 (1977-05-01), Bridgewater
patent: 4081797 (1978-03-01), Olson
patent: 4214273 (1980-07-01), Brown
patent: 4241361 (1980-12-01), Kamiya
patent: 4338624 (1982-07-01), d'Hautecourt et al.
Direct Address Television Tuning and Display System using Digital MOS Large Scale Integration, by Evans et al., IEEE Transactions on Consumer Electronics, vol. CE-22, No. 4, pp. 267-288, Nov. 1976.
Sony KV-4000 Schematic Diagram and Operation Manual, pp. 10-15, 1980.
Hitachi CT0911 Service Manual, Jan. 1981.
RCA Television Service Data, CTC 107, File 1981-C-2, pp. 1-4, 8-14, 21, 24-29, 33; and Supplement File 1981-C-S2, pp. 1-6.
RCA Television Service Data CTC-81B, File 1975-C-9, pp. 1, 16-20, 23-24.

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