Television – Format conversion – Changing number of lines for standard conversion
Patent
1995-12-01
1998-03-17
Chin, Tommy P.
Television
Format conversion
Changing number of lines for standard conversion
348674, H04N 5202
Patent
active
057292973
ABSTRACT:
A scanning line interpolator using a gamma correction memory includes a controller for outputting switching control signals according to an input video signal; an analog/digital converter for converting the input video signal into a digital signal; a first multiplexer for allowing the output signal of the analog/digital converter to pass according to the switching control signal output from the controller; a line buffer having a 1H delay for delaying the digital video signal having passed through the first multiplexer; a gamma correction memory for previously storing the scanning line interpolated digital video signal and then outputting it with the output signals of the analog/digital converter and 1H delay being taken as its addresses; and a second multiplexer for selectively outputting the output signals of the analog/digital converter and gamma correction memory according to the switching control signal output from the controller.
REFERENCES:
patent: 4903122 (1990-02-01), Ozaki et al.
patent: 5089890 (1992-02-01), Takayama
patent: 5361094 (1994-11-01), Jang
patent: 5374953 (1994-12-01), Sasaki et al.
patent: 5517248 (1996-05-01), Isoda
patent: 5534948 (1996-07-01), Baldwin
patent: 5625379 (1997-04-01), Reinert et al.
Chin Tommy P.
Lee Y.
LG Electronics Inc.
White John P.
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