Computer peripheral device, its control method, image pickup device, storage medium, computer system, and computer

摘要

A peripheral device which is connected with a host computer is prevented from unexpectedly coming to be in a disconnection state due to control of the host computer. Further, even when the peripheral device such as an electronic camera can not enough receive power necessary for the device itself from a connection line such as a USB, the peripheral device is made to be able to use the power effectively. To achieve the above, there is disclosed a computer peripheral device which is connected with the host computer and comprises a connection signal transmission unit for transmitting to the host computer a signal to control the connection with the host computer and a control unit for shifting an operation state of the computer peripheral device to a low consumption current mode after the connection signal transmission unit transmitted to the host computer a signal to control into the disconnection state.