Image capturing device and activation method therefor

摘要

An image capturing device includes a first controller operable to control image capturing; an operation section including a switch; a detector operable to detect a change to an image capturing mode and to send a signal representing the change; a second controller operable to monitor and process the sent signal, the second controller having a power consumption less than that of the first controller; and a power supply operable to supply power to the first controller, the second controller, and a functional section of the device. When the second controller receives the signal sent from the detecting section in a power saving state in which power is supplied from the power supply to the second controller, the power saving state is changed to a power supplying state capable of image capturing by supplying power from the power supply to portions of the device including the first controller.

主权项

1. A portable apparatus comprising:
a plurality of types of sensors, said types of sensors including an image sensor; and a processor coupled to said sensors, wherein said processor includes a plurality of control units, at least one of said control units having a variably controllable operating frequency, wherein said portable apparatus is operable in a plurality of powered operational states, said powered operational states including a first operational state and a second operational state, and an image capturing operation is performable in the first operational state, wherein said processor is to control said portable apparatus to change operational state of said portable apparatus from the second operational state to the first operational state and supply power to one or a plurality of components of the portable apparatus including said image sensor which is in a predetermined power consumption state in the second operational state when receiving a first signal representing an activation of the image capturing operation in the second operational state according to a result of output of one or a plurality of said sensors, wherein said change of operational state is performed with background processing, and wherein said operating frequency can be lowered so that power consumption of said one of the control units can be close to almost zero.