Method and apparatus for video signal sharpening

Details Method and apparatus for video signal sharpening Method and apparatus for video signal sharpening

1996-04-10

1998-07-07

Peng, John K.

Television

Image signal processing circuitry specific to television

Transition or edge sharpeners

348627, H04N 5208

Patent

active

057776890

ABSTRACT:
A video sharpening circuit for improving video signal detail or providing a unique visual effect extracts the high frequency portion from an input video signal. The high frequency portion is then variably amplified and added to the input video signal or to a reference video signal. The resulting output video signal has the high frequency detail restored to produce an aesthetically pleasing effect.

REFERENCES:
patent: 4268861 (1981-05-01), Schreiber et al.
patent: 4561022 (1985-12-01), Bayer
patent: 4825297 (1989-04-01), Fuchsberger et al.
patent: 5237402 (1993-08-01), Desbon et al.

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