Digital 25 hz offset generator

Details Digital 25 hz offset generator Digital 25 hz offset generator

H - Electricity

04

N

350/49, 350/50

H04N 9/44 (2006.01) H04N 5/067 (2006.01)

Patent

CA 1301913

AV-3221 ABSTRACT OF THE INVENTION Non-orthogonality of the blanking region information caused by the 25 Hz offset in a digital PAL-encoded color television signal is corrected by a dynamic offset circuit. To this end, a plurality of waveforms describing the envelopes of the blanking, sync and burst are stored, and during video signal processing are sequentially addressed at a 25 Hz rate. The resulting assembled output blanking information is orthogonal to the television scanning frequency.

519188

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