CHARGING AND DISCHARGING SYSTEM AMONG TWO PORTABLE DEVICES
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United States of America Patent
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Issued Date -
Oct 22, 2015
app pub date -
Jun 12, 2014
filing date -
Apr 17, 2014
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Abstract
A charging and discharging system is used for charging power to, or obtaining power from, a second portable electronic device. The system includes a power transmission interface and a first portable electronic device. The power transmission interface includes a first power node and a second power node, where the second power node establishes a power transmission connection to the second portable electronic device. The first portable electronic device includes a first data processing module, a first memory module, a first internal power reservoir, a first power management module, and a first power transmission port. The first power management module, controlled by the first data processing module, determines that the current passing the first power management module is from the first power node to the first internal power reservoir or from the first internal power reservoir to the first power node.
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