Television systems transmitting dither-quantized signals
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United States of America Patent
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Sep 15, 1992
Issued Date -
N/A
app pub date -
Jan 4, 1990
filing date -
Sep 23, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Television systems that transmit dither-quantized samples for psychovisually compressed signalling are improved by substituting novel multi-phase dithers of the invention for previously known multi-phase dithers. The improved dithers comprise ordered-dither frame patterns and typically have sixteen or eight phases and sixteen sizes of dither samples. A first variety, not self-interpolating, merely shifts the frame-pattern structure from frame-to-frame. Methods and means are disclosed for generating novel self-interpolating dithers with sixteen or eight phases, including preferred dithers. Self-interpolating dithers are generally superior and they also facilitate receiver display of more quantum levels than actually transmitted.
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Family
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Cited Art Landscape
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