Patent ID: 7225352

Claim:
Apparatus comprising: a display memory which holds image data which is to be displayed on a provided display device; a power controller which is coupled to said display memory and which switches said display memory to a power-saving state that causes the image data to be lost and restores said display memory from the power-saving state; a storage area which stores a predetermined idle time activation condition; a memory; and a processor which is operatively coupled to said power controller, said storage area, and to said memory and which executes code stored in said memory, the code including: activation condition rewriting code which is effective to rewrite the idle time activation condition configured as a stored in the storage area to an idle time minimum unit in response to a request for the power-saving state so that the idle time activation condition is satisfied: routine activation code which is effective to activate a screen saver routine when the idle time activation condition is satisfied; activation condition restoration code which is effective to restore the rewritten idle time activation condition to the original predetermined idle time activation condition after the screen saver routine is activated; and routine termination code which is effective to terminate the screen saver routine in response to a request for restoration from the power-saving state; image data re-creation code which is effective to execute the re-creation of image data on the display memory when the routine is terminated.