Power management for a computer system and device is accomplished by implementing two separate power modes in a serially-connected device, and selecting from the two power modes depending on the state of a receiver in the device. A signal detector within the receiver is connected to a serial interface...http://www.google.com.au/patents/US7404090?utm_source=gb-gplus-sharePatent US7404090 - Device and computer system for power management using serial link connections
