Error detector for encoded digital signals

Details Error detector for encoded digital signals Error detector for encoded digital signals

1988-05-16

1990-02-20

Smith, Jerry

Excavating

3582611, G06F 1100

Patent

active

049032690

ABSTRACT:
A line marker signal is added to a DPCM encoded video signal to mark the beginning of each video scan line. The receiver searches for this marker signal and counts pixels between received markers, each scan line having a known number of pixels. The pixel count is checked against the known number of pixels in an error free system. If the pixel count differs from the known count, an error is indicated. The line marker signal is used to reset the decoder so the receiver is resynchronized at each scan line.

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