"Channel guide" automatically activated by the absence of progra

Details "Channel guide" automatically activated by the absence of progra "Channel guide" automatically activated by the absence of progra

1990-06-29

1992-11-03

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

3581911, 358336, 358189, H04N 550

Patent

active

051610191

ABSTRACT:
A "channel guide" system, including a picture-in-picture processing unit for displaying an array of images corresponding to respective channels or auxiliary televisions signals on a display screen is automatically activated when the video signal currently being processed by the receiver no longer contains program information (e.g., either does not contain valid video information, or represents a uniform screen). In a VCR, the "channel guide" system is automatically initiated in response to the detection of the end of tape.

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