Digital method and device for correcting the phase error of...

Details Digital method and device for correcting the phase error of... Digital method and device for correcting the phase error of...

H - Electricity

04

N

354/70

H04N 9/64 (2006.01) H03H 17/08 (2006.01) H03L 7/099 (2006.01) H03M 1/12 (2006.01) H04N 9/89 (2006.01)

Patent

CA 1202421

DIGITAL METHOD AND DEVICE FOR CORRECTING THE PHASE ERROR OF A SAMPLED SIGNAL AS APPLICABLE TO THE CORRECTION OF TELEVISION SIGNALS Abstract of the Disclosure At the time of analog-to-digital conversion by sampling of a sine-wave signal having a frequency F by means of a clock signal having a frequency 4nF where n is a whole number, these two signals exhibit a residual phase error .PHI. . The method for correcting the converted digital signal according to the invention consists in delaying this signal by n periods of the clock signal in a shift register, in multiplying the undelayed signal by cos .PHI., in multiplying the delayed signal by sin .PHI. and in trans- mitting the results to an adder.

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