Electronic time base error correction methods and arrangements

Details Electronic time base error correction methods and arrangements Electronic time base error correction methods and arrangements

H - Electricity

04

N

350/38, 352/18.3

H04N 9/12 (2006.01) H04N 9/893 (2006.01)

Patent

CA 1115410

ABSTRACT OF THE DISCLOSURE: An electronic time base error correction technique in which the color video signal is recorded so that in playback in at least one channel sync information is provided along with the luminance information and the color burst information along with the chrominance information. Feed- back loops are provided to derive from the sync information coarse-correction of the video signal and derive from the burst information fine-correction of the video signal. The color burst extends over the entire blanking interval. Three different approaches are specifically disclosed: in the first, coarse- and fine-correction are carried out in tow tandem connected stages, respectively. In the second, coarse- and fine-correction are accomplished in the same stage by means of a bi-level phase comparator. The third approach is a modification of the second approach, in which the first and second techniques have been combined.

284055

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