Electronic equipment, module, and system
First Claim
Patent Images
1. An electronic device comprising:
- an antenna having a coil;
a load;
a power supply portion for supplying the load with an electric power received at the antenna, the power supply portion including a rectifier and a DC/DC converter, the rectifier rectifying a received electric power of the antenna to produce a rectification signal, the DC/DC converter carrying out DC/DC conversion on the rectification signal to supply the load with the converted rectification signal as the electric power;
a communication portion for communicating with an outside of the communication portion through the antenna;
a switch circuit provided between the antenna and the communication portion; and
a switch controller for controlling, on the basis of the rectification signal received from the rectifier of the power supply portion, the switch circuit to (i) disconnect the communication portion from the antenna so that the load is supplied with the electric power, if the received electric power level is high, and (ii) to connect between the antenna and the communication portion so that the communication portion carries out radio communication with the antenna, if the received electric power level is low.
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Abstract
An electronic equipment is provided with an antenna including a coil, a load, a power feeding unit for feeding power received by the antenna to the load, a communication unit for communicating with the outside world via the antenna, a switching circuit installed between the antenna and the communication unit, and a switching control unit for controlling ON/OFF of the switching circuit according to power to be received by the antenna.
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Citations
13 Claims
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1. An electronic device comprising:
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an antenna having a coil; a load; a power supply portion for supplying the load with an electric power received at the antenna, the power supply portion including a rectifier and a DC/DC converter, the rectifier rectifying a received electric power of the antenna to produce a rectification signal, the DC/DC converter carrying out DC/DC conversion on the rectification signal to supply the load with the converted rectification signal as the electric power; a communication portion for communicating with an outside of the communication portion through the antenna; a switch circuit provided between the antenna and the communication portion; and a switch controller for controlling, on the basis of the rectification signal received from the rectifier of the power supply portion, the switch circuit to (i) disconnect the communication portion from the antenna so that the load is supplied with the electric power, if the received electric power level is high, and (ii) to connect between the antenna and the communication portion so that the communication portion carries out radio communication with the antenna, if the received electric power level is low. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13)
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11. A module comprising:
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an antenna; a power supply portion, coupled with a load, for supplying the load with an electric power received at the antenna, the power portion including a rectifier and a DC/DC converter, the rectifier rectifying a received electric power of the antenna to produce a rectification signal, the DC/DC converter carrying out DC/DC conversion on the rectification signal to supply the load with the converted rectification signal as the electric power; a communication portion for communicating with an outside of the communication portion through the antenna; a switch circuit provided between the antenna and the communication portion; and a switch controller for controlling, on the basis of the rectification signal received from the rectifier of the power supply portion, the switch circuit to (i) disconnect the communication portion from the antenna so that the load is supplied with the electric power, if the received electric power level is high, and (ii) to connect between the antenna and the communication portion so that the communication portion carries out radio communication with the antenna, if the received electric power level is low.
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Specification