Electrical computers and digital processing systems: support – Computer power control
Patent
1997-10-30
1999-11-30
Sheikh, Ayaz R.
Electrical computers and digital processing systems: support
Computer power control
713340, 714 22, 307311, G06F 132
Patent
active
059960795
ABSTRACT:
A method and apparatus for improved indication of power-consumption status in a computer system is described. The computer system includes a light-emitting diode (LED) which produces an optical signal. The apparent intensity of the optical signal is controlled by a pulsed LED control signal having an adjustable duty cycle. By varying the duty cycle, the apparent intensity of the optical signal is varied. The rate at which the duty cycle is varied may be selected to produce an apparent intensity optical signal which varies continuously between a greatest and a least intensity. Also, the rate at which the duty cycle is varied may be selected from a plurality of rates, each corresponding with a one of a plurality of power-consumption states in which the computer system can operate.
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Sheikh Ayaz R.
Thlang Eric S.
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