Controller-driver, display device, and display method

Details Controller-driver, display device, and display method Controller-driver, display device, and display method

2007-04-17

2007-04-17

Tran, Henry N. (Department: 2629)

Computer graphics processing and selective visual display system

Display driving control circuitry

Intensity or color driving control

C345S541000, C345S544000, C345S545000, C345S596000, C711S153000, C711S154000, C382S282000, C382S284000

Reexamination Certificate

active

10684389

ABSTRACT:
A controller-driver, a method of driving the controller-driver, and a method of processing image data enabling scroll or other various functions without adding a storage capacity of a display memory nor increasing power consumption. A built-in display memory having a capacity of one frame (H pixels×V pixels×the number of bits) is partitioned into a plurality of memories according to an image type. High order bits are then stored in a first display memory7aand high order bits of the next frame or low order bits are stored in a second display memory7bby using a first selector8to a third selector10controlled by a memory control circuit6before 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 unit1when the scroll function is used, thereby reducing power consumption.

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