POWER SUPPLY CONTROL METHOD AND SYSTEM

摘要

In the present invention, a CPU (101) detects that a specific function operated by a first peripheral device (102) is no longer displayed on a screen. Upon detecting the absence of the on-screen display of the specific function, the CPU (101) starts supplying electric power to a second peripheral device (103). Upon detecting the absence of the on-screen display of the specific function, the CPU (101) stops supplying the electric power to the first peripheral device (102). Upon receiving a control signal from the CPU (101), the second peripheral device (103) outputs a response signal to the CPU (101) in response to the control signal.