Apparatus and method for limiting digital video signals

Details Apparatus and method for limiting digital video signals Apparatus and method for limiting digital video signals

1990-11-06

1992-03-17

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358166, H04N 514

Patent

active

050973371

ABSTRACT:
A digital limiter for processing a digital video signal includes a limiter stage whose output is subtracted from the input to the stage in a subtracting stage. The resulting difference signal is accumulated by means of an accumulating device. The accumulated signal is added to the digital video signal to be processed. The accumulator provides a memory function for the signal component clipped in the limiter. It also includes a leakage device, so that the accumulated signal can decrease again after the start of limiting action.

REFERENCES:
patent: 4684989 (1987-08-01), Roeder
Peter Draheim, "Digitalisierung der Video-Signalverabeitung Beispel: Video-Kassettenrecorder", Electronik, No. 57, 1984, pp. 97-100.

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