Apparatus for detecting positive and negative noise signals in a

Details Apparatus for detecting positive and negative noise signals in a Apparatus for detecting positive and negative noise signals in a

1989-11-14

1991-07-16

Peng, John K.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358336, 358340, H04N 5208, H04N 594, H04N 591, H04N 514

Patent

active

050329154

ABSTRACT:
Apparatus for detecting noise signals, such as may be due to dropout, in a video signal includes a first detector for detecting positive and negative noise signals included in the positive portion of an input video signal, such as the video information portion, and a second detector for detecting positive and negative noise signals included in the negative portion of that video signal, such as the synchronizing signal portion. An output noise indication representing noise detected in the video and synchronizing portions of the input signal is produced as a function of the outputs from the first and second detectors.

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