Recovery and demodulation of a pulse width modulation encoded si

Details Recovery and demodulation of a pulse width modulation encoded si Recovery and demodulation of a pulse width modulation encoded si

1979-07-05

1981-06-02

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Converting an analog signal to digital form for recording;...

360 29, 360 67, 360 68, G11B 500, G11B 502

Patent

active

042714389

ABSTRACT:
A method of demodulating a pulse width modulation encoded analog signal wherein the analog signal is retrieved from individual pulse width modulation cycles. A method of sampling and outputing the retrieved analog signal only if missing pulse detectors confirm that the pulse width modulation cycle was valid. And a method generating a second but inverted play-back signal permitting use of two identical pulse width modulation transition descriminators-detectors.

REFERENCES:
patent: 3651280 (1972-03-01), Streckman
patent: 3840890 (1974-10-01), Sunderland
patent: 4146099 (1979-03-01), Matsushima et al.
patent: 4164763 (1979-08-01), Bricetti et al.

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