Video signal recorder/player devices

Details Video signal recorder/player devices Video signal recorder/player devices

1989-01-23

1991-07-02

Envall, Jr., Roy N.

Facsimile and static presentation processing

Facsimile

Recording apparatus

3581911, 358310, 360 331, 455186, 455184, 455166, H04N 576

Patent

active

050290150

ABSTRACT:
A video signal recorder/player device, e.g. a video tape recorder, is adapted to select a playback channel to be any one of a plurality of UHF television channels. A microcontroller in the device sets a UHF tuner in the device to each UHF channel in turn and tests the signal level in the channel. A free channel containing substantially no signals is selected, when found, as the playback channel, only when the immediately adjacent lower channel does not contain a wanted broadcast television transmission. Once a selection is made, the microcontroller sets the playback channel frequency to that of the selected channel.

REFERENCES:
patent: 2897351 (1959-06-01), Melton
patent: 4789905 (1988-12-01), Ezaki
patent: 4833728 (1989-06-01), Kimura et al.

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