Patent ID: 8254777

Claim:
A portable apparatus having functions of image capturing and power management, the portable apparatus operable in a plurality of powered operational states including first and second operational states, an image capturing operation being performable in the first operational state wherein: said portable apparatus comprising: a touch sensor for detecting user's touch, one or plurality of components including an imaging capturing unit, the one or plurality of components consuming less power in the second operational state than in the first operational state, and a power supply section for supplying power to the one or plurality of components; and said portable apparatus comprising a power management processing apparatus including a variable frequency processor, wherein power is supplied from said power supply section to the power management processing apparatus through a power-supply line other than a power-supply line through which power from the power supply section is supplied to the one or plurality of components, said power management processing apparatus configured: to monitor a user's touch operation to the touch sensor in the second operational state, when detecting a signal representing a user's touch operation instructing activation of the image capturing operation in the second operational state, to control an operational state change of the portable apparatus from the second operational state to the first operational state and to control supply sufficient power to said one or plurality of components so that the one or more components is capable of working for the image capturing operation, and to control the first operational state to get a time-out in a condition when there is no user's instruction detected in the first operational state; wherein the detection of the user's touch is performed by using a threshold operation in order to provide an appropriate sensitivity for the detection of the user's touch.