Power management system for use in laptop computer and...

Details Power management system for use in laptop computer and... Power management system for use in laptop computer and...

2007-07-10

2010-11-09

Suryawanshi, Suresh K (Department: 2115)

Electrical computers and digital processing systems: support

Computer power control

C713S320000, C713S323000

Reexamination Certificate

active

07831848

ABSTRACT:
A power management system for use in a laptop computer and its power management method include an external power apparatus and a control unit and a switch disposed in the laptop computer. The external power apparatus is pluggable and supplies direct current (DC) between 5 and 1.8 DC voltages to the laptop computer. The switch can turn on/off the direct current to at least one DC voltage point within the laptop computer based on a control signal sent from the control unit.

REFERENCES:
patent: 4649334 (1987-03-01), Nakajima
patent: 6326097 (2001-12-01), Hockaday
patent: 6696771 (2004-02-01), Acharya et al.
patent: 6904532 (2005-06-01), Matsumoto
patent: 7242111 (2007-07-01), Menas et al.
patent: 08095681 (1996-04-01), None
Shinpei Kunii, Portable Electronic Equipment, Apr. 12, 1996, Japenese Patent English translation, pp. 1-10.

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