Patent ID: 7151522
Filing Date: 2006-12-19
Classification: G09G

Abstract:
1. A display driver for driving a display panel, the display driver comprising: a control register which controls the display driver; a memory control circuit which performs access control over a memory which is provided outside or inside the display driver and stores a display characteristic control parameter of the display panel, the display characteristic control parameter of the display panel being not display data or data generated from display data; and a register write circuit which writes a display characteristic control parameter that has been read from the memory to the control register and performs refresh processing of the control register, at a given refresh timing, wherein the control register includes a first register group which stores a display characteristic control parameter and a second register group, the first register group being related to the refresh processing and being accessible by a processing section, and the second register group not being related to the refresh processing and being accessible by the processing section, wherein the display characteristic control parameter is read from the memory through the memory control circuit and is written to the first register group by the register write circuit at a refresh timing, and wherein information from the processing section is written to the first register group in normal operation.