公开(公告)号：CA1306299C

公开(公告)日：1992-08-11

申请号：CA600748

申请日：1989-05-25

Applicant: IBM

Inventor： LARKY STEVEN P ,  LUCAS BRUCE D ,  MCCABE DANIEL H ,  RODGERS TODD K

IPC: G09G5/00 ,  G06T5/00 ,  G09G3/20 ,  G09G5/02 ,  G09G5/06 ,  H04N1/41 ,  H04N1/64 ,  G09G1/28

Abstract: YO988-030 A color display device which includes dither apparatus for each primary color to be displayed. A dither matrix provides a dither signal output as a function of the position of a pixel on the color display device. An input primary color signal includes an integer signal and a fraction signal. The integer signal is incremented by an incrementer. There is means for providing an output primary color signal which is the incremented signal whenever a predetermined relationship exists between the dither signal and the fraction signal, and which is the integer signal whenever the predetermined relationship does not exist.