While image data is written into either one of first, second, third frame memories 1, 2 and 3, image data are repetitively read two times from the remaining two memories in one vertical synchronization interval and transferred to an arithmetic unit 4, and this operation is executed with the frame memories...http://www.google.com/patents/US7522140?utm_source=gb-gplus-sharePatent US7522140 - Liquid crystal display device driving method
