Patent ID: 6876385

Claim:
An image data processing method comprising the steps of: storing image data of a screen into memory means, said image data having M lines and N pixels in each of said M lines; reading the image data from the memory means in a unit of block having K lines and L pixels in each of said K lines and processing the read image data in the unit of block; and when the image data is read in the unit of block having said K lines and said L pixels and the read image data is short of the unit of block, said M lines are divided by said K lines resulting in a first remainder and said N pixels are divided by said L pixels resulting in a second remainder; wherein a number of lines equal to half of said first remainder is added to an upper end of said image, data and a lower end of said image data and wherein a number of pixels equal to half of said second remainder is added to a left end of said image data and a right end of said image data.