Apparatus and method of recharging a battery using a USB...

Details Apparatus and method of recharging a battery using a USB... Apparatus and method of recharging a battery using a USB...

2011-07-19

2011-07-19

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

Cell or battery charger structure

Having plug for a-c receptacle

C320S136000

Reexamination Certificate

active

07982428

ABSTRACT:
An apparatus and a method of recharging a battery of a portable device using a USB are provided. In the method, a recharge unit of the portable device detects a voltage of the battery, and recharges the battery with a maximum recharge current of the USB. An amount of time for recharging a battery is shortened and power consumption for the recharging of the battery is reduced.

REFERENCES:
patent: 6798175 (2004-09-01), Hanada et al.
patent: 2004/0164708 (2004-08-01), Veselic et al.
patent: 2007/0075683 (2007-04-01), Chung et al.
patent: 1933280 (2007-03-01), None
Dawei Zhu, A Charging controller for a Lithium-ion battery, LTC4053-4.2, Nov. 30, 2004, A New Type of Device, issue 11.

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