| 摘要 |
<p>A system for lowering the power output of a computer peripheral device (347, 447, 547, 1013) connected to a host computer (111, 211) during periods of inactivity of the host or the peripheral device senses a power management command at the peripheral device generated at the host computer. Time sensing means at the host senses inactivity, and generating circuitry generates a power-management command, and controls power-using circuitry in the peripheral device in response. In an embodiment applicable to peripherals having a microprocessor, the system may be incorporated entirely in software at the host and the peripheral device. In dumb devices, the system requires add-in and/or add-on apparatus cooperating with software.</p> |
