Patent ID: 6359653
Filing Date: 2002-03-19
Classification: G09G,H04N,Y10S

Abstract:
A method for VGA to TV data transformation using a background-based adaptive flicker reduction algorithm, comprising the steps of:pre-defining a flicker region rule for identifying if a region should be processed for flicker reduction; determining if a region in a picture to be displayed on a screen is a flicker region or not according to said flicker region rule; and processing said region using a background-based adaptive flicker reduction algorithm if said region is a flicker region; wherein said background-based adaptive flicker reduction algorithm comprises: (a) computing a Mean value according to pixel values of a current pixel, and adjacent pixels directly above and below said current pixel; (b) determining a background state based on said Mean value; (c) computing a Diff value according to absolute differences between pixel values of said adjacent pixels and said current pixel; (d) selecting a flicker reduction mode based on said background state, said Mean value and said Diff value; and (e) computing an anti-flicker pixel value for said current pixel according to said flicker reduction mode.