Circuitry providing a delayed color television signal having lum

Details Circuitry providing a delayed color television signal having lum Circuitry providing a delayed color television signal having lum

1979-04-16

1980-09-16

Martin, John C.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 11, 358 12, H04N 9535

Patent

active

042233410

ABSTRACT:
In a method of and apparatus for processing 625-line PAL colour television signals, in which in conjunction with each line of the signal there is provided an additional signal for use therewith, the additional signal is formed essentially of the luminance component of a signal equivalent to the signal 625 lines previous to the current line, and the chrominance component of a signal substantially equivalent to the signal 624 lines previous to the current line. Alternatively, the difference of the chrominance components 624 and 626 lines previous may be used. For 525-line N.T.S.C. the luminance component is derived from the signal 525 lines previous, and the chrominance component is the chrominance component of the signal 524 or 526 lines previous to the current line, or an average of these. The form of the chrominance component may be selected automatically in dependence upon vertical chrominance detail.

REFERENCES:
patent: 4058836 (1977-11-01), Drewery et al.

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