Circuit for displaying characters on limited bandwidth, raster scanned display
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United States of America Patent
Stats
-
Jul 8, 1980
Grant Date -
N/A
app pub date -
May 24, 1978
filing date -
May 24, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A 2-level quantized video signal, composed of background level and character-pattern delineating level time intervals in which transitions between levels only occur at an end of one or more elemental timing periods, is modified to a 3-level quantized video-signal in which the difference between the character-pattern delineating and background levels is increased for at least one of the first and last entire elemental timing periods of the duration of each occurring character-pattern delineating level interval.
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