Patent ID: 8120599
Filing Date: 2012-02-21
Classification: G09G

Abstract:
1. A method of automatically recovering bit values of a control register within a drive circuit, the method comprising: storing command data input from a host into the control register and a first part of a graphic RAM (GRAM) of the drive circuit; transmitting a scan clock signal from a controller of the drive circuit to the GRAM to control the GRAM to perform a scanning operation on each horizontal line of a frame of image data stored within a second part of the GRAM; outputting from the GRAM the command data stored in the first part to the control register each time the scanning operation is performed; and transmitting the scan clock signal from the controller to the control register to control the control register to refresh its stored command data with the command data output from the GRAM, wherein the control register is refreshed each time a horizontal line of the GRAM is scanned.