Adaptive distortion elimination circuitry for a video disc...

Details Adaptive distortion elimination circuitry for a video disc... Adaptive distortion elimination circuitry for a video disc...

G - Physics

11

B

352/18

G11B 9/06 (2006.01) H04N 5/931 (2006.01)

Patent

CA 1159951

RCA 74,559 Abstract The present invention describes non-linear circuitry for reducing intermodulation distortion occurring in signals recovered from a disc record. The non-linear circuit generates complementary signals in a diode modulator for cancelling the undesired distortion components of the recovered signal. A synchronous detector in a servo loop with the non-linear circuit samples the distortion component of the resultant baseband video signal and applies bias to condition the non-linear circuit to further reduce the distortion-components. A reference signal for the detector is derived from the sound components of the recovered signal.

379970

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