Cable broadcast TV receiver with automatic channel search responsive to mode change
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 12, 1988
Grant Date -
N/A
app pub date -
Jan 21, 1987
filing date -
Jan 21, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A 'cable-ready' receiver includes a controller for selecting broadcast ('air') and cable channels tuned by a tuner. When switching between air and cable tuning modes the controller stores the number of the channel tuned in the previous mode and retunes the tuner to the stored channel if the number is within a range of valid channel numbers for the new tuning mode. If not, the controller increments the number until it is both in the range and present in a user selected channel tuning list and retunes the turner to the incremented number. In another embodiment the controller increments the number until it is within the valid channel range and a video detector signifies that the channel is occupied. Both examples increase the likelihood that an active channel will be tuned when changing the air/cable tuner operating modes.
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Family
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