发明名称 |
CONTROLLER-DRIVER, DISPLAY DEVICE, AND DISPLAY METHOD |
摘要 |
PROBLEM TO BE SOLVED: To provide a controller-driver, display device and a display method which realize scroll or other various functions without adding a storage capacity of a display memory nor increasing power consumption. SOLUTION: A built-in display memory having a capacity of one frame (H pixels×V pixels×n bits) is partitioned into a plurality of memories according to an image type. High order bits are then stored in a first display memory 7a and high order bits of the next frame or low order bits are stored in a second display memory 7b by using a first selector 8 to a third selector 10 controlled by a memory control circuit 6 before they are read out. Thereby, high-level image data of one frame can be displayed when the scroll function is not used and image data of a plurality of frames can be displayed without accessing an image drawing unit 1 when the scroll function is used, thereby reducing power consumption. COPYRIGHT: (C)2004,JPO
|
申请公布号 |
JP2004157526(A) |
申请公布日期 |
2004.06.03 |
申请号 |
JP20030350636 |
申请日期 |
2003.10.09 |
申请人 |
NEC ELECTRONICS CORP |
发明人 |
NOSE TAKASHI;SHIODA YORIHIRO |
分类号 |
G06F3/14;G09G3/20;G09G3/36;G09G5/00;G09G5/34;G09G5/397;(IPC1-7):G09G5/00 |
主分类号 |
G06F3/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|