Image enhancement system for television

Details Image enhancement system for television Image enhancement system for television

Filed on

1979-12-05

Date issued

1981-05-19

Examiner

Murray, Richard

Patent Class

Facsimile and static presentation processing

SubClass

Facsimile

SubSubClass

Specific signal processing circuitry

Other Related Categories

H04N 514

Type

Patent

Status

active

Patent number

042688647

Description

ABSTRACT:
An image enhancement system for television wherein conventionally generated detail signals representative of variations in the amplitude of the video signal are further processed before being added to the video signal. A first fractional amplitude portion of the generated detail signal is amplified and then subjected to severe coring and the resulting bi-polar signal is combined with a second fractional amplitude portion of the generated detail signal to produce a resultant detail signal having a contour which reduces the width of the edging effect at contrast transitions associated with conventional enhancement systems, and in which high frequency noise and other spurious signals are substantially reduced while retaining fine detail to enhance key parts of the television picture.

REFERENCES:
patent: 3920889 (1975-11-01), Conner
patent: 4091420 (1978-05-01), Omori et al.
"Improved Signal Processing Techniques for Color Television Broadcasting," R. H. McMann, Jr. et al., 1968 Journal SMPTE.

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