Electrical computers and digital processing systems: support – Computer power control
Reexamination Certificate
2005-09-06
2008-10-28
Perveen, Rehana (Department: 2116)
Electrical computers and digital processing systems: support
Computer power control
C713S320000, C713S340000
Reexamination Certificate
active
07444527
ABSTRACT:
A circuit for saving battery power within an electronic equipment while the electronic equipment is powered off, the circuit includes a switch circuit, a voltage regulator, a power management unit, and a system voltage terminal. The switch circuit is connected to the battery for controlling the supply of power from the battery to the electronic equipment. The voltage regulator is connected to the switch circuit and provides a regulated voltage. The power management unit coupled to the voltage regulator. A system voltage terminal is connected to a node between the voltage regulator and the power management unit via a first diode, the power management unit controls the system voltage. It is of advantage that a switch circuit is provided to control the supply of power from a battery to the power management unit, when the electronic equipment is switched off, no power is supplied to the power management unit.
REFERENCES:
patent: 4868832 (1989-09-01), Marrington et al.
patent: 6647501 (2003-11-01), Ninomiya
patent: 2004/0136129 (2004-07-01), Amada et al.
Brown Michael J
Hon Hai Precision Industry Co. Ltd.
Morris Manning & Martin LLP
Perveen Rehana
Tingkang Xia, Esq. Tim
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