Signal processing apparatus, image display apparatus and...

Details Signal processing apparatus, image display apparatus and... Signal processing apparatus, image display apparatus and...

2008-01-15

2008-01-15

Natnael, Paulos M. (Department: 2622)

Television

Image signal processing circuitry specific to television

Transition or edge sharpeners

Reexamination Certificate

active

07319496

ABSTRACT:
There is provided a signal processing apparatus comprises an edge amount detection portion for generating a data string of luminance differences of a pair of pixels adjacent to each other or adjacent over some pixels in predetermined number of frames of a luminance signal, detecting a maximum luminance difference from the data string and storing the same; and a correction amount conversion portion for converting the data string of the luminance difference to a contour correction amount based on the maximum luminance value: wherein a correction signal generation portion generates a contour correction signal while changing a gain in accordance with the contour correction amount and outputs the same to a contour correction portion; and the contour correction portion adds the contour correction signal to an image signal by synchronizing, corrects a contour of the image and output the same.

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