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Patent Searching and Data


Title:
POWER-RECEIVING DEVICE AND ELECTRONIC APPARATUS
Document Type and Number:
Japanese Patent JP2014217193
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a power-receiving device that allows properly protecting a communication unit even if a voltage value at the time of communication is close to a voltage value at the time of power receiving.SOLUTION: A power-receiving device includes a power-receiving antenna receiving power in a non-contact state, a power-feeding unit, a communication antenna, a communication unit communicating via the communication antenna, a communication switch, and a switch control unit. The power-feeding unit is connected to the power-receiving antenna and outputs an output voltage according to power received through the power-receiving antenna. The communication switch is connected between the communication antenna and the communication unit. The communication switch can change between a conduction state in which the communication unit is electrically connected to the communication antenna and a cut-off state in which the communication unit is disconnected from the communication antenna. The switch control unit causes the switch to change to the cut-off state when an output voltage from the power-feeding unit increases over a first voltage, whereas the switch control unit causes the switch to change to the conduction state when the output voltage decreases below a second voltage lower than the first voltage.

Inventors:
MAKITA KAZUMASA
Application Number:
JP2013093240
Publication Date:
November 17, 2014
Filing Date:
April 26, 2013
Export Citation:
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Assignee:
NEC TOKIN CORP
International Classes:
H02J17/00
Attorney, Agent or Firm:
Takuya Yamazaki