Electrical noise reducer for T.V. signals

Details Electrical noise reducer for T.V. signals Electrical noise reducer for T.V. signals

1983-04-07

1985-12-31

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 36, H04N 521

Patent

active

045624704

ABSTRACT:
A digital system for removing, from a television signal, the electrical noise generated by faulty isolators from power lines. A thin horizontal segment noise detector locates possible noisy pixels (picture elements), and an image horizontal line verifier prevents false alarms given by the noise detector. An image corrector is provided to remove detected noise. The real time algorithm described in the invention is designed to provide a robust detector pseudo independent of noise waveforms, a memory window of three video delay lines, and a low cost digital hardware system.

REFERENCES:
patent: 4152657 (1979-05-01), Robers
patent: 4361853 (1982-11-01), Remy

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