Color component signal converting apparatus having an input depe

Details Color component signal converting apparatus having an input depe Color component signal converting apparatus having an input depe

1990-02-08

1992-08-18

Moore, David K.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 30, H04N 964, H04N 967, H04N 976

Patent

active

051404087

ABSTRACT:
Supplied selectively to a recording system circuit of a VTR are a first component signal comprising three primary color signals R, G and B and a second component signal comprising a luminance signal Y and two types of color difference signals P.sub.B and P.sub.R. The first and the second component signals pass through a group of LPFs (1, 2, 3) having the same pass characteristics and then are A/D converted at the same sampling clock. The component signal converted into a digital signal is applied to a matrix circuit 11. Respective coefficients of the matrix circuit are switched according to a type of the inputted component signal, and as a result, a second digital component signal is always outputted at a fixed delay time from the matrix circuit. Two color signal data which are over-sampled included in the second digital component signal are applied to decimation digital filters 14 and 15 to reduce data densities thereof.

REFERENCES:
patent: 4464685 (1984-04-01), Wilkinson
patent: 4660073 (1987-04-01), Baumeister
patent: 4743960 (1988-05-01), Duvic et al.
patent: 4772938 (1988-09-01), Sasson
"Video Signal Processing for 1/2" Cassette Hi-Vision VTR", T. Bannai et al, Technical Report of the Institute of Television Engineers of Japan, Oct., 1989, vol. 13, No. 50, pp. 7-12.

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