Apparatus for detecting and displaying supplementary program
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United States of America Patent
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-
Mar 9, 1999
Grant Date -
N/A
app pub date -
Sep 19, 1996
filing date -
Sep 22, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A teletext/data transmission decoder decodes information on characters and graphics and produces a supplementary program video signal. A proper program video signal arriving by way of a video processing circuit and a display image processing section and the supplementary program video signal coming from the decoder are synthetically combined by a synthesizing section and fed to a display unit. A system controller sets the decoder in a waiting state. If the proper program video signal contains data information, the system controller automatically starts a decoding operation and controls the synthesizing section to display the restored signal on the display unit. When an automatic display select switch is set to an automatic display mode, a supplementary program processing mode is automatically selected when a supplementary program is started.
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