Sub-nyquist sampling encoder and decoder of a video system
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United States of America Patent
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-
Sep 19, 1989
Grant Date -
N/A
app pub date -
Feb 29, 1988
filing date -
Mar 3, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A sub-Nyguist sampling encoder and decoder has a plurality of interpolators provided in an encoder and corresponding plural interpolators provided in a decoder. Information indicating which interpolator can be used to minimize the interpolation error is superimposed on a value of a non-thinned-out pixel and transmitted from the encoder to the decoder, and the decoder receiving the information is permitted to always perform optimum interpolation. The interpolation information is superimposed on the least significant bit of the value of the non-thinned-out pixel, with the view of effecting the superimposition without increasing the amount of transmission data and without degrading quality of the video signal.
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