Digital time base corrector for reproducing video signals

Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium

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386 2, 386 13, 386 91, H04N 594, H04N 595, H04N 988, H04N 989

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056064268

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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