Patent ID: 7760205

Claim:
An information processing apparatus comprising: a main processor unit which integrally controls the information processing apparatus as a whole and switches between a plurality of tasks, each task corresponding to an application; and a graphic processor unit which performs image processing corresponding to the tasks being processed in the main processor unit, by using data related to the tasks and transmitted by the main processor unit, wherein when the main processor unit transmits data related to a first task corresponding to a first application to the graphic processor unit, if the graphic processor unit is performing image processing corresponding to a second task corresponding to a second application different from the first application, the main processor unit changes the destination of the data related to the first task to a memory and saves the data related to the first task for later restoration at least until the graphic processor unit completes the image processing corresponding to the second task, the main processor unit comprises a plurality of general-purpose processing units and uses one of the processing units as an interface circuit dedicated to the transmission of the data to the graphic processor unit, and the data to be transmitted to the graphic processor unit is transiently transmitted to the interface circuit, and the interface circuit changes the destination of the data to the memory depending on which application the image processing performed by the graphic processor unit corresponds to, the graphic processor unit performs image processing corresponding to a task being processed in one of the plurality of processing units, which is predetermined as a management processor, and the interface circuit receiving the data to be transmitted to the graphic processor unit compares the task being processed by a processing unit originating the transmission with the task being processed by the management processor, and changes the destination of the data depending on the comparison result.