Registers – Coded record sensors
Reexamination Certificate
2006-02-08
2010-10-05
Walsh, Daniel (Department: 2887)
Registers
Coded record sensors
C235S487000, C340S010100, C340S010340, C340S010510, C340S572100
Reexamination Certificate
active
07806332
ABSTRACT:
To provide a semiconductor device capable of securely executing a reading operation to improve a reliability of read data, an IC tag including the semiconductor device, and a control method for the IC tag. A semiconductor device according to an embodiment of the present invention includes: a power supply voltage generating circuit for generating a power supply voltage based on a received radio signal; a power supply voltage generating circuit for detecting the power supply voltage; a memory area for storing predetermined data; a reading/writing circuit using different operation voltages for reading data from the memory area and writing data to the memory area; and a control circuit for executing a data reading operation for the memory area based on a detected power supply voltage.
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Udo Karthaus et al., “Fully Integrated Passive UHF RFIDD Transponder IC With 16.7uW Minimum RF Input Power”, IEEE Journal of Solid-State Circuits, vol. 38, No. 10, Oct. 2003, pp. 1602-1608. (previously cited).
Japanese Office Action dated Dec. 2, 2008 with English translation thereof.
McGinn IP Law Group PLLC
NEC Electronics Corporation
Walsh Daniel
LandOfFree
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