Computer peripheral device, its control method, image pickup...

Details Computer peripheral device, its control method, image pickup... Computer peripheral device, its control method, image pickup...

2008-07-01

2008-07-01

Cao, Chun (Department: 2115)

Electrical computers and digital processing systems: support

Computer power control

Power conservation

C713S300000

Reexamination Certificate

active

07395442

ABSTRACT:
A host computer can prevent a peripheral device connected to the host computer from unexpectedly shifting into a non-connection state through control of the host computer. Further, when the peripheral device, such as an electronic camera, cannot receive enough power from a connection line, such as a USB, the peripheral is still able to use the available power effectively. To achieve these objectives, there is a disclosed computer peripheral device connected to the host computer, wherein the peripheral device is comprised of a connection signal transmitter and a controller. The connection signal transmitter is used to transmit from the peripheral device to the host computer a signal to control the connection with the host computer. The controller is used for proceeding a running state of the computer peripheral to a non-connection state, after the connection signal transmitter transmits a signal for a non-connection state to the host computer.

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