Television signal processing apparatus

Details Television signal processing apparatus Television signal processing apparatus

1984-02-22

1987-10-06

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358149, 358183, H04N 504

Patent

active

046986782

ABSTRACT:
A television signal processing apparatus comprises a source of system television synchronizing signals, an analog-to-digital converter for converting an input television signal to digital form, a digital-to-analog converter for converting the digital signal back to analog form, a plurality of digital television signal processors arranged in series between the analog-to-digital converter and the digital-to-analog converter, at least one of the signal processors being capable of frame synchronizing the digital television signal in dependence on a frame pulse supplied to the signal processor, and means associated with the digital-to-analog converter for producing a frame pulse and for feeding the frame pulse back to each of the signal processors, or at least to a signal processor capable of frame synchronizing the digital television signal and for synchronizing the produced frame pulse relative to the system television synchronizing signals.

REFERENCES:
patent: 3525808 (1975-08-01), Brown
patent: 3962634 (1976-06-01), Russo
patent: 4148070 (1979-04-01), Taylor
patent: 4218705 (1980-08-01), Inaba et al.
patent: 4218710 (1980-08-01), Kashigi et al.
patent: 4468698 (1984-08-01), Kavoussi et al.
patent: 4599650 (1986-07-01), Wilkinson
"Put Video A/D Converters to Work", by Eugene Zuch Electronic Design (vol. 26, pp. 68-73), 8/2/78.

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