Patent ID: 7158142

Claim:
An information processing apparatus for controlling display contrast of a display screen based on a stored display contrast value, said information processing apparatus comprising: a display screen; storage means for storing a display contrast value; display control means for displaying display contrast setting information based on the stored display contrast value on said display screen when a display contrast adjustment processing is activated in accordance with a request for a display contrast adjustment procedure; input means for inputting, by manipulation of a user, data using the display contrast setting information displayed on said display screen in order to change the display contrast value; measuring means for measuring a time of no data input by said input means; value changing means for changing the display contrast value stored in said storage means after a first predetermined period of time measured by said measuring means elapses or when the data is inputted by said input means; and changing means for changing the display contrast of said display screen based on the display contrast value changed by said value changing means, wherein after said changing means changes the display contrast, said measuring means resumes measuring and when a second predetermined period of time measured by said measuring means elapses, said value changing means changes the display contrast value stored in said storage means.