Circuit arrangement for detecting a switching phase

Details Circuit arrangement for detecting a switching phase Circuit arrangement for detecting a switching phase

H - Electricity

04

N

352/14

H04N 5/76 (2006.01) H04N 9/79 (2006.01) H04N 9/84 (2006.01) H04N 9/873 (2006.01)

Patent

CA 1140256

1.6.1979 PHD 78094 ABSTRACT: As is known the phase of the chrominance signal is changed in a specific rhythm for the elimination of cross-talk during recording on a magnetic tape, spurious signals being cancelled via a comb filter. By means of an inverse combination stage after the comb filter an opposite signal is obtained, which with the normal output signal yields a correction signal via a differential amplifier in the case of an incorrect demodulation phase.

331187

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