Edge correction method and apparatus

Details Edge correction method and apparatus Edge correction method and apparatus

2006-07-11

2006-07-11

Tran, Trang U. (Department: 2614)

Television

Image signal processing circuitry specific to television

Transition or edge sharpeners

C348S606000, C348S252000

Reexamination Certificate

active

07075588

ABSTRACT:
An edge correction apparatus and a method of performing an effective edge correction of an image signal in horizontal, vertical and diagonal directions include generating a two-dimensional (2D) second differential signal from the image signal, generating first differential signals in the horizontal, vertical and diagonal directions from the image signal, selecting one of the first differential signals, combining the selected one and the 2D second differential signal, and correcting the edge of the image signal using the combined signal. Therefore, it is possible to effectively correct edges of the image signal in the horizontal, vertical and diagonal directions.

REFERENCES:
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patent: 5204747 (1993-04-01), Shinkai
patent: 5512956 (1996-04-01), Yan
patent: 6268933 (2001-07-01), Kim
patent: 6496605 (2002-12-01), Osa
patent: 60211 (1992-10-01), None
patent: 2000-47313 (2000-07-01), None
Notice to Submit Response—Korean Patent Office, dated Feb. 7, 2004.

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