Patent ID: 7643023
Filing Date: 2010-01-05
Classification: G09G

Abstract:
1. A matrix type display device comprising: a frame memory capable of storing at least one frame of graphic data inputted from an image writing unit; a data write control circuit for outputting a write wait signal for causing the write of graphic data to said frame memory to wait, to said image writing unit, and for outputting a write end signal at the time of ending the write of the graphic data inputted from said image writing unit for each frame, in said frame memory; a synchronizing circuit for outputting a read start signal on the basis of said write end signal and a frame synchronizing signal; a data read control circuit for reading the graphic data stored in said frame memory, on the basis of said read start signal; an in-module frame memory for storing the graphic data read from said frame memory; and a display drive circuit for outputting said frame synchronizing signal, reading the graphic data stored in said in-module frame memory and for driving a display panel for displaying said graphic data; and wherein said data write control circuit decides it on the basis of the state of the output control signal inputted from said image writing unit whether or not said write wait signal is to be outputted.