Systems and Methods for Power Management

摘要

Methods employ a power saving mode which disconnects power from the AC mains during periods of device inactivity to eliminate power drawn from the AC mains. To allow monitoring of user-associated events while disconnected from the AC mains, power is drawn from a power source separate from the AC mains to power up components and circuitries used for monitoring. When monitoring inputs are received, connection with the AC mains is re-established to provide AC power to the device to accommodate functions.

主权项

1. A method of controlling power used by an electronic device that draws power from an AC (alternating current) power source during normal operation, and from a second power source separate from the AC power source during idle operation, comprising:
providing a power supply subsystem for receiving power from the AC power source; providing a switch between the power supply subsystem and the AC power source; determining whether a predetermined time period has elapsed that the electronic device is in an idle condition; controlling the switch to disconnect the power supply subsystem from the AC power source in response to determining that the predetermined time period has elapsed; and providing power drawn from the second power source to one or more monitoring circuitries within the electronic device for monitoring user events while the power supply subsystem is disconnected from the AC power source such that substantially no power is drawn by the electronic device from the AC power source while the electronic device is in the idle condition.