Television channel indicator with automatic on-screen display

Details Television channel indicator with automatic on-screen display Television channel indicator with automatic on-screen display

1982-02-24

1984-02-07

Martin, John C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

H04N 550

Patent

active

044306717

ABSTRACT:
A television receiver which can display an on-screen indication of the number of the selected TV channel includes apparatus for providing such display automatically at times when the normal TV picture becomes blanked or black. In addition, the channel number display can be provided in small characters when the picture is normal and in enlarged characters when the picture is substantially black.

REFERENCES:
patent: 3526707 (1970-09-01), Skinner et al.
patent: 3812285 (1974-05-01), Miyata et al.
patent: 3984828 (1976-10-01), Beyers, Jr.
patent: 4081797 (1978-03-01), Olson
patent: 4119955 (1978-10-01), Nichols
patent: 4139860 (1979-02-01), Micic et al.
patent: 4259689 (1981-03-01), Bonner et al.
patent: 4319286 (1982-03-01), Hanpachern
patent: 4321596 (1982-03-01), Hernandez et al.
patent: 4333110 (1982-06-01), Faerber et al.
patent: 4366502 (1982-12-01), Shiu
"The Practical Application of On-Screen Display to a Television Receiver", Olson and Brennan, IEEE, Aug. 1973, vol. BTR-19, No. 3.
Data Sheet MM58146 Display IC, National Semiconductor Corp., Santa Clara, California.

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