Error correction method and circuit for nonlinear quantization circuit
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United States of America Patent
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Apr 7, 1992
Grant Date -
N/A
app pub date -
Sep 7, 1990
filing date -
Sep 19, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An error correction method and circuit for a nonlinear quantization circuit comparing a test signal which is produced from an error correction table by applying an analog reference signal into a nonlinear circuit with reference data that is defined as an output of the error correction table when the nonlinear circuit has no error, and updating the error correction table by the test signal and the reference data when they disagree. The output of the nonlinear circuit is corrected by using the error correction table. The technique is particularly suitable for nonlinear conversion performed by a gamma correction circuit of a color television camera.
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