Patent ID: 8217884
Filing Date: 2012-07-10
Classification: G09G

Abstract:
1. A digital image display comprising: an analog-to-digital conversion portion converting a received analog image signal to a digital image signal; a display screen portion displaying said digital image signal converted by said analog-to-digital conversion portion; and a control portion controlling a clock value, a phase value, a horizontal position and a vertical position of said digital image signal converted by said analog-to-digital conversion portion, wherein said digital image signal includes a first pixel data value of a first pixel which is located at the end of an image region having an image, and a second pixel data value of a second pixel which is located at the end of an image region having no image and which is adjacent to said first pixel, and said control portion is so formed as to decide optimum said phase value on the basis of a result of comparison between the sum of squares of said first pixel data value and the sum of squares of said second pixel data value when controlling said phase value of said digital image signal.