Horizontal and vertical image detail processing of a color telev

Details Horizontal and vertical image detail processing of a color telev Horizontal and vertical image detail processing of a color telev

1981-04-20

1982-12-21

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 36, 358 31, H04N 9535

Patent

active

043652662

ABSTRACT:
A system for processing the luminance component of a composite video signal in a television receiver is disclosed. The receiver includes a comb filter responsive to the video signal for providing first and second combed output signals from which luminance and chrominance components are respectively derived. A restored luminance signal, comprising signals from the first comb filter output and vertical detail information derived from the second comb filter output, is linearly processed by a network including a horizontal signal peaking circuit. A vertical detail component derived from the second comb filter output is non-linearly processed by a network which generates a vertical detail peaking component. The vertical peaking component is low-pass filtered and then combined with horizontally peaked luminance signals to produce a horizontally and vertically peaked luminance signal, which is afterwards applied to further luminance signal processing circuits of the receiver.

REFERENCES:
patent: 4096516 (1978-06-01), Pritchard
patent: 4223339 (1980-09-01), Lagoni
patent: 4223340 (1980-09-01), Bingham
patent: 4295160 (1981-10-01), Lagoni
RCA Corporation Television Service Data Bulletin, (Technical Publn. C-7, 1980), FIGS. 30 and 32, pp. 38, 39 and 44.

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