Patent ID: 7113216
Filing Date: 2006-09-26
Classification: H04N

Abstract:
1. A portable electronic unit including a display screen, comprising: (a) a memory for storing data representing an image to be displayed on the display screen; (b) a temperature detector for detecting the internal temperature of the electronic unit; and (c) a power consumption controller for controlling power consumed by the electronic unit depending on the detected temperature to provide an ordinary power mode and a power saving mode in which the brightness of the image shown on the display screen is made darker than in the ordinary power mode, wherein when the temperature detected by the temperature detector exceeds a first predetermined temperature, the power consumption controller changes to the power saving mode; and wherein when the electronic unit is operating in the power saving mode and the temperature in the electronic unit detected by the temperature detector is lower than a second predetermined temperature which is lower than the first predetermined temperature, the power consumption controller changes to the ordinary power mode.