Patent ID: 8552952

Claim:
A method for changing icon marks when a moving picture is being displayed on a display panel of a display system, wherein the display system comprises a display control device coupled to the display panel, and a processor coupled to the display control device, wherein a moving picture is displayed on a first portion of the display panel, and the icon marks are displayed on a second portion on the display panel, wherein the display control device includes a display memory, a first register, and a second register, wherein the first register is configured to set a first state in which the display memory is enabled to write icon mark data provided from the processor to the display control device, and to set a second state in which the display memory is enabled to write moving picture data provided from the processor to the display control device, and wherein the icon mark data is previously written into the display memory, and the moving picture data written into a selected area of the display panel when the first register is in the second state and the second register is in a first enable state, the method comprising: 1) setting the first register to the second state by the processor and writing the moving picture data into the display memory when the second register is in the first enable state; 2) setting the second register to a second enable state by the processor and writing the icon mark data into the display memory; and 3) setting the register back to first enable state by the processor.