Patent ID: 8493392

Claim:
An image display device comprising: a display memory that stores image data to be displayed on a display; a sprite attribute storage that stores attribute data representing a display attribute of a sprite which is a component of the image data; a sprite rendering processor that executes a drawing process for reflecting image data of the sprite to the image data stored in the display memory according to the attribute data of the sprite stored in the sprite attribute storage; and an animation execution engine that reads an animation execution program from an external memory and that executes the animation execution program including a command to rewrite the attribute data of the sprite stored in the sprite attribute storage, wherein, in addition to the animation execution engine, a CPU is able to rewrite attribute data in the sprite attribute storage, and wherein, when a specific command is fetched as a command constituting a part of the animation execution program, the animation execution engine executes the specific command on a condition that at least a synchronous signal is received from the CPU.