Demodulation system for digital information

Details Demodulation system for digital information Demodulation system for digital information

1974-05-28

1976-04-06

Kominski, John

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

328111, 329126, 360 25, H03K 908

Patent

active

039493130

ABSTRACT:
A demodulation system for digital information, recorded by an FM or PM system, which provides a clock output pulse whose pulse width is proportional to the time length of the preceding bit frame and said clock output signal is utilized for demodulating the recorded data. Said pulse width can be controlled either by an analog or a digital circuit and thus, the present invention has the advantage that the information is demodulated stably though the moving speed of the recording medium is changed or deviated.

REFERENCES:
patent: 3243580 (1966-03-01), Welsh
patent: 3418433 (1968-12-01), Hodge
patent: 3532999 (1970-10-01), Vermeulen
patent: 3590280 (1971-06-01), Hudson
patent: 3601710 (1971-08-01), Morra
patent: 3602828 (1971-08-01), Kurzweil et al.
patent: 3683288 (1972-08-01), Curry
patent: 3805175 (1974-04-01), Nassimbene

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