Television receiver having teletext processor with ROM for on-screen message
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United States of America Patent
Stats
-
Dec 30, 1986
Grant Date -
N/A
app pub date -
Apr 1, 1985
filing date -
Apr 1, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A microprocessor based TV/TTX processor includes a stored pages ROM in the TTX processor for storing on-screen display messages and lists of functions and characteristics as pages of TTX data. An RGB switch is coupled to receive the output of a character generator in the TTX processor and to receive the video output of the TV for selectively displaying information from each source with or without the on-screen messages and lists. The stored pages ROM relieves the microprocessor of the necessity of generating the on-screen messages and lists. Items on the list are controllable by the viewer and an indication of the status of the item is given by the microprocessor changing a character in the display memory of the TTX processor.
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Family
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Cited Art Landscape
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