Image display method and apparatus

Abstract

An image display method and apparatus for generating display data from predetermined high-order bits of original image data, the display data reflecting an error of low-order bits in the original image data. The display data is used to drive each of pixels arranged in line and column directions. The high-order three bits of six-bit original image data are regarded as intra-frame process data. A process value is determined based on the low-order three bits of the original image data, on a frame number, on a line number and on a column number. That process value is added to the least significant bit of the intra-frame process value made of the high-order three bits, whereby three-bit display data is generated. The addition of the process value evenly distributes the gray level error of the low-order three bits within each frame and between frames for simulated high quality gray level display.

1 . An image display method comprising the steps of:
 generating display data made of X bits from original image data composed of Y bits, said X bits being fewer than said Y bits;   using the X-bit display data to drive each of pixels arranged in line and column directions; and   generating a binary-signal process value to be added to intra-frame process data based on the high-order X bits of said original image data;   wherein, if the same original image data is made to correspond with a group of pixels on 2 (Y-X)  columns continued on each of a predetermined number of lines, said process value is arranged so that each of adjacent lines in the pixel group will have a different combination of pixels in which the process value of “1” us added to said intra-frame process data.   
     
     
         2 - 9 . (canceled)