DISPLAY DRIVER, OPERATING METHOD THEREOF, HOST FOR CONTROLLING THE DISPLAY DRIVER, AND SYSTEM HAVING THE DISPLAY DRIVER AND THE HOST

摘要

An operation method of a display driver includes generating a count value by counting a period of a synchronization signal related to a synchronization packet received from a host, receiving a mode change command from the host, the mode change command indicating a change from a video mode transmitting first image data to a display by bypassing a frame memory to a command mode transmitting second image data to the display through the frame memory, and generating an internal synchronization signal having a period substantially equal to the period of the synchronization signal by using the count value based on the mode change command after a last pulse of the synchronization signal is generated. A time interval between the last pulse and a first pulse of the internal synchronization signal is equal to the period of the synchronization signal.

主权项

1. A method for operating a display driver comprising:
generating a count value by counting a period of a synchronization signal related to a synchronization packet received from a host; receiving a mode change command from the host, the mode change command indicating a change from a video mode transmitting first image data to a display by bypassing a frame memory to a command mode transmitting second image data to the display through the frame memory; and generating an internal synchronization signal having a period substantially equal to the period of the synchronization signal by using the count value based on the mode change command after a last pulse of the synchronization signal is generated, a time interval between the last pulse and a first pulse of the internal synchronization signal being equal to the period of the synchronization signal.