Method and apparatus for interpolating scanning line of TV signa

Details Method and apparatus for interpolating scanning line of TV signa Method and apparatus for interpolating scanning line of TV signa

1992-12-28

1998-01-13

Lee, Michael

Television

Format conversion

Line doublers type

348441, H04N 701, H04N 1102

Patent

active

057084742

ABSTRACT:
A method and an apparatus for interpolating a scanning line of a TV signal in a TV, wherein a diagonal component of a video signal of the TV signal is considered and there can be prevented a line structure, a line flicker and a vertical resolution insufficiency due to shortage in the number of the scanning lines. The apparatus of the invention comprises a scanning line interpolator for obtaining vertical, horizontal and diagonal variations of a received video signal of the TV signal and considering a weight with respect to a signal of the smallest variation, so as to obtain an interpolation signal, a first time compressor for compressing the time of an output signal from the scanning line interpolator by 2 to 1, a second time compressor for compressing the time of the received video signal by 2 to 1, and a switch for selecting an output signal from the second time compressor with respect to a position of the original signal and selecting an output signal from the first time compressor with respect to a position to be interpolated.

REFERENCES:
patent: 4768092 (1988-08-01), Ishikawa
patent: 4831435 (1989-05-01), Song et al.
patent: 4937667 (1990-06-01), Choquet et al.
patent: 4985764 (1991-01-01), Sato
patent: 5019903 (1991-05-01), Dougall et al.
patent: 5093721 (1992-03-01), Robii

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