Apparatus for detecting line and frame sync signals from television signals

摘要

Disclosed in an apparatus for detecting line and frame sync signals by detecting the uncorrelation between line sync signals of television signals in a digital form. A first uncorrelation detector 10 detects the uncorrelation between the line sync signals being received. A second uncorrelation detector 20 detects the uncorrelation between three least significant bits and three most significant bits of the line sync signals being received. A line sync detector 30 generates the line sync detection signal in response to the output signals of the first and second uncorrelation detectors 10 and 20. A frame sync detector 40 generates frame sync detection signal in response to the output signals of the first and second uncorrelation detectors 10 and 20.