Television – Basic receiver with additional function – For magnification of part of image
Patent
1996-05-17
1998-04-28
Tung, Bryan S.
Television
Basic receiver with additional function
For magnification of part of image
348582, H04N 974
Patent
active
057451869
ABSTRACT:
A 4:4:4 component video signal comprising a luminance signal Y and color-difference signals Cb and Cr is transformed to a 4:1:1 component coded video signal coded by a coding device, reducing processing is carried out after transformation and the result is written into the frame memory based on an enable signal. At this point, the pulse number of the enable signal ENy of the reduced luminance signal is counted, the differential between the horizontal pixel number when the reduced color-difference signals are decoded to the original 4:4:4 component video signal and the horizontal pixel number of the reduced luminance signal is determined, a dummy pulse of this differential is generated and the dummy pulse portion only of the writing address of the frame memory for the reduced luminance signal is shifted backwards. Reduced signals read out from the frame memory are outputted after being decoded to the original 4:4:4 component video signal by the decoding device.
REFERENCES:
patent: 5043811 (1991-08-01), Yasuhiro
patent: 5420643 (1995-05-01), Romesburg et al.
patent: 5668604 (1997-09-01), Takano et al.
Kamei Mitoku
Shimizu Yutaka
Sanyo Electric Co,. Ltd.
Tung Bryan S.
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