Patent ID: 7554555
Filing Date: 2009-06-30
Classification: G09G

Abstract:
1. An image display device comprising: a. a first multi-dimensional array of dither pattern tiles, said array comprising a first lower temporal frequency bound; b. a second multi-dimensional array of dither pattern tiles, said array comprising a second lower temporal frequency bound, wherein said second lower temporal frequency bound is lower than said first lower temporal frequency bound; c. wherein said first multi-dimensional array of dither pattern tiles is associated with a first range of local luminance characteristic values; d. wherein said second multi-dimensional array of dither pattern tiles is associated with a second range of local luminance characteristic values, e. a determiner for determining a local luminance characteristic for a plurality of tile block locations in a digital image; f. a selector for selecting a dither pattern tile from said first multi-dimensional array of dither pattern tiles for application on at least one of said tile block locations when said at least one of said tile block locations has a local luminance characteristic value that falls within said first range and for selecting a dither pattern tile from said second multi-dimensional array of dither pattern tiles for application on at least one of said tile block locations when said at least one of said tile block locations has a local luminance characteristic value that falls within said second range.