Semiconductor device and IC tag for transmitting/receiving data in radio communication
First Claim
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1. A semiconductor device, comprising:
- a receive circuit for generating receive data from received radio signals;
a power supply voltage generation circuit for generating power supply voltage based on the received radio signals;
a control circuit for performing logical processing based on the received data;
a transmission circuit for generating radio signals including transmission data and transmitting the radio signals via an antenna; and
an oscillation circuit, which is operated using the power supply voltage generated by the power supply voltage generation circuit, for generating a predetermined frequency of clocks.
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Abstract
A semiconductor device, comprises a receive circuit for generating receive data from received radio signals, a power supply voltage generation circuit for generating power supply voltage based on the received radio signals, a control circuit for performing logical processing based on the received data, a transmission circuit for generating radio signals including transmission data and transmitting the radio signals via an antenna and an oscillation circuit, which is operated using the power supply voltage generated by the power supply voltage generation circuit, for generating a predetermined frequency of clocks.
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Citations
20 Claims
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1. A semiconductor device, comprising:
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a receive circuit for generating receive data from received radio signals;
a power supply voltage generation circuit for generating power supply voltage based on the received radio signals;
a control circuit for performing logical processing based on the received data;
a transmission circuit for generating radio signals including transmission data and transmitting the radio signals via an antenna; and
an oscillation circuit, which is operated using the power supply voltage generated by the power supply voltage generation circuit, for generating a predetermined frequency of clocks. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An IC tag which communicates with a reader/writer and operates based on radio signals transmitted from the reader/writer, comprising:
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a receive circuit for generating receive data from the radio signals received from the reader/writer;
a power supply voltage generation circuit for generating power supply voltage based on the received radio signals;
a storage circuit for storing information;
a control circuit for controlling the reading/writing of the storage circuit based on the received data;
a transmission circuit for transmitting the information read from the storage circuit to the reader/writer as transmission data; and
an oscillation circuit for generating a predetermined frequency of clocks. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification