Digital time base corrector for reproducing video signals
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United States of America Patent
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Feb 25, 1997
Issued Date -
N/A
app pub date -
Jun 16, 1995
filing date -
Oct 16, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A digital time base corrector in which a memory for correction of a time base is commonly used as a memory for correction of a drop-out and a signal process to a video signal which is replaced by a drop-out compensation is made unnecessary. The corrector has an image memory having a capacity to store the digital video signal by only two horizontal scan periods. When a drop-out occurs in the reproduction video signal, the writing operation into the image memory is inhibited. In the portion in which the drop-out occurred, the video data before about 2 H is read out in place of such a portion and the drop-out compensation is executed. Therefore, the drop-out portion is replaced by the video data of the same phase.
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