Apparatus and method for enhancing transient edge of video signa

Details Apparatus and method for enhancing transient edge of video signa Apparatus and method for enhancing transient edge of video signa

1993-11-29

1995-05-02

Groody, James J.

Television

Image signal processing circuitry specific to television

Transition or edge sharpeners

348606, H04N 521

Patent

active

054124328

ABSTRACT:
An apparatus and a method for enhancing a transient edge of a video signal. The apparatus comprises 2n sample delays for sequentially delaying an original pixel value of the video signal inputted therein by one sample and outputting 2n pixel values of the video signal, where n is a positive number, a minimum value filter for obtaining the minimum value of the original pixel value and the 2n-1 pixel values except the nth pixel value, a maximum value filter for obtaining the maximum value of the original pixel value and the 2n-1 pixel values except the nth pixel value, a mean value filter for obtaining the mean value of the original pixel value and the 2n-1 pixel values except the nth pixel value, and a transient edge control circuit for obtaining a difference between the nth pixel value and the mean value, generating an absolute value of the obtained difference, comparing the generated absolute value with a threshold value, discriminating the transient edge of the video signal in accordance with the compared result and enhancing the discriminated transient edge on the basis of the minimum value and the maximum value to reduce a width of the transient edge.

REFERENCES:
patent: 4847681 (1989-07-01), Faroudja et al.

Affiliated with

Also associated with

Rating

Apparatus and method for enhancing transient edge of video signa does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for enhancing transient edge of video signa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for enhancing transient edge of video signa will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1141092