Unified program guide interface
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United States of America Patent
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-
Apr 29, 1997
Issued Date -
N/A
app pub date -
Jul 2, 1996
filing date -
Dec 21, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
Analog and digital video signals are each representative of a picture and each may carry program guide information. A demultiplexer has the digital video signal as an input and the program guide information as an output. A demodulator has at least a luminance component of the analog video signal as an input and the program guide information as an output. A microprocessor, a video graphics adapter, the demultiplexer and the demodulator are interconnected by a data bus. Either of the program guide outputs is transferable to the video graphics adapter, which formats a graphics video signal representative of the program guide information. The graphics video signal and a selected one of the video signals are inputs to a multiplexer, which outputs a combined video signal representative of both the program guide information and the picture represented by the selected video signal.
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