Electronic television tuner interface circuit

Details Electronic television tuner interface circuit Electronic television tuner interface circuit

1977-09-06

1979-04-24

Murray, Richard

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

340706, 325455, 340750, H04N 550

Patent

active

041515595

ABSTRACT:
An electronic television tuning system includes a channel number selection integrated circuit chip interfaced with a channel computer integrated circuit chip by a plurality of data lines. The channel number selection chip, in response to the partial or complete entry of a channel number by the viewer, develops multiplexed digital codes on the data lines representing the channel number entry and, in certain circumstances, a predefined blanking code. A display apparatus, coupled to the data lines, provides an observable indication of the channel number entry, portions of the display being suitably blanked in response to the blanking code. Tuning information and raster blanking signals are developed by the channel computer chip directly from the information supplied on the data lines.

REFERENCES:
patent: 4081797 (1978-03-01), Olson

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