Sine-wave decoding technique

Details Sine-wave decoding technique Sine-wave decoding technique

1982-08-30

1984-12-18

Buczinski, S. C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

331 20, 358120, 375120, H04N 716, H04N 102

Patent

active

044893477

ABSTRACT:
A decoder includes an oscillator supplying a decoding signal to the control input of an RF modulator for decoding a sine wave encoded television signal. The decoding signal developed by the oscillator is randomly phase locked in either of two states with the output of a horizontal sync separator operated in response to the detected output of the RF modulator. In the first phase locked state, the decoding signal is in antiphase relationship with the encoding modulation resulting in a properly decoded baseband video signal. In the second phase locked state, the decoding signal is in phase alignment with the encoding modulation so as to constructively combine therewith. The second phase locked state is detected and broken each time it is assumed allowing the decoder to eventually assume the first phase locked state wherein a properly decoded video signal is produced.

REFERENCES:
patent: 3081376 (1963-03-01), Loughlin et al.
patent: 3729576 (1973-04-01), Court
patent: 4024575 (1977-05-01), Harney et al.
patent: 4105975 (1978-08-01), Sanders et al.
patent: 4338628 (1982-07-01), Payne et al.
patent: 4398215 (1983-08-01), Osaka
patent: 4443769 (1984-04-01), Achwanden et al.

Affiliated with

Also associated with

Rating

Sine-wave decoding technique does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sine-wave decoding technique, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sine-wave decoding technique will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1991056