Contour-emphasizing device

Details Contour-emphasizing device Contour-emphasizing device

2007-11-20

2007-11-20

Vu, Ngoc-Yen (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S222100, C348S234000, C382S266000

Reexamination Certificate

active

10474715

ABSTRACT:
The present invention provides an edge enhancing apparatus (20) including a filter (51) to extract a horizontal high-frequency component of a video signal, a rise/fall detection detector (52) to detect leading and trailing edges of the horizontal high-frequency component of the video signal, and a waveform balancer (53) to multiply the high frequency component extracted by the filter (51) by a gain to generate an enhancement signal for enhancing the original video signal. The waveform balancer (53) works to make the gain a value larger than “1” when the signal level of the high frequency component at the leading edge of the video signal is positive while making the gain a value of “1” or smaller than “1” when the signal level of the high frequency component at the leading edge of the video signal is negative, and make the gain a value of “1” or smaller than “1” when the signal level of the high frequency component at the trailing edge of the video signal is positive while making the gain a value larger than “1” when the signal level of the high frequency component at the trailing edge of the video signal is negative.

REFERENCES:
patent: 5038388 (1991-08-01), Song
patent: 6043853 (2000-03-01), Shimazaki et al.
patent: 6094205 (2000-07-01), Jaspers
patent: 6148115 (2000-11-01), Mackinnon et al.
patent: 6614474 (2003-09-01), Malkin et al.
patent: 6774943 (2004-08-01), Kao et al.
patent: 6850275 (2005-02-01), Minakami
patent: 7-327152 (1995-12-01), None
patent: 8-317253 (1996-11-01), None
patent: 11-355610 (1999-12-01), None
patent: 2000-312301 (2000-11-01), None

Affiliated with

Also associated with

Rating

Contour-emphasizing device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Contour-emphasizing device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Contour-emphasizing device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3881500