Patent ID: 6054980
Filing Date: 2000-04-25
Classification: G09G

Abstract:
A method of displaying images according to a plurality of source image frames encoded in a display signal, said source image frames being encoded at an encoding frequency FR.sub.S and said images being displayed on a display screen of a display unit, wherein said display unit has an associated target refresh rate, wherein said encoding frequency is greater than said target refresh rate, said method comprising the steps of:(a) receiving said analog display signal in said display unit;(b) determining an actual refresh rate FR.sub.D and N such that, FR.sub.S /FR.sub.D =(N+1)/N, wherein FR.sub.D is at least approximately equal to said target refresh rate and N in an integer greater than or equal to 2;(c) generating a plurality of pixel data elements representing each of said source image frames;(d) storing said plurality of pixel data elements in a frame buffer;(e) retrieving said plurality of pixel data elements from said frame buffer such that said display screen can be refreshed at FR.sub.D ; and(f) disabling the storing of at least some of said plurality of pixel data elements related to every (N+1).sup.st source image frame into said frame of step (d),wherein step (f) prevents image tearing problem by ensuring that a single display image is not generated from two source images.