METHOD FOR TRANSFERRING PICTURE DATA TO VIDEO DISPLAY UNIT FROM CONTROLLER, VIDEO DISPLAY UNIT ADAPTER, VIDEO DISPLAY SYSTEM AND METHOD FOR DOUBLE-BUFFERING PICTURE DATA FOR DISPLAYING IT ON TELEVISION DISPLAY SCREEN

摘要

PROBLEM TO BE SOLVED: To provide a method for transferring picture data from a controller to a video display unit by comparing second picture data with first picture data, generating third picture data indicating a difference between first picture data and second picture data. SOLUTION: First picture data are received in a controller (S1304). The controller generates a color lookup table, based on a unique color detected by first picture data (S1312). It is transmitted to the video display unit (S1316). The controller receives new picture data (S1324). New picture data are compared with previously stored data (S1336). The color of new picture data is compared with that of the color lookup table (S1340). The new color lookup table is generated as the result of comparison (S1344) and it is transmitted to the video display unit (S1348).