Analog signal synthesizing processing circuit with periodic nois

Details Analog signal synthesizing processing circuit with periodic nois Analog signal synthesizing processing circuit with periodic nois

1987-09-14

1989-07-25

LaRoche, Eugene R.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Signal switching

360 32, 360 381, 381 94, 341118, G11B 1514

Patent

active

048519340

ABSTRACT:
An analog signal synthesizing processing circuit with a periodic noise compensation generates analog signal of a plurality of audio signals and so forth containing noise generated almost periodically, for example by head switching of VTR, and plurality of analog signals containing the noise are phase-synchronized with given sampling clock signal and phase synchronizing circuit by timing oscillating circuit, the phase-synchronized signal is output from reproductive audio signal processing circuit, converted into digital signal by analog-digital converter and the noise contained in this converted signal is approximated from its preceding and following signal by compensation processing circuit and this approximated signal is converted into analog signal by digital-analog converter.

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Schulz et al., "Analog-to-Digital Converter with Noise Rejection", IBM Tech. Dis. Bulletin, vol. 15, No. 6, Nov. 1972, pp. 2007-2008.

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