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Semiconductor device for IC tag, IC tag and control method for IC tag for detecting and executing command from radio wave

  • US 7,717,349 B2
  • Filed: 07/28/2005
  • Issued: 05/18/2010
  • Est. Priority Date: 07/29/2004
  • Status: Expired due to Fees
First Claim
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1. A semiconductor device for an IC tag, comprising:

  • a receive unit for demodulating receive data from a received RF signal; and

    a signal processing unit for detecting a command comprising data signals from the receive data demodulated by the receive unit and executing processing based on the command, wherein the signal processing unit has a command acceptance mode and a command execution mode, the command execution mode for executing the command when the command has previously been detected from receive data in the command acceptance mode, and cancelling the command when the command is detected from the receive data in the command execution mode, wherein the signal processing unit generates an error signal when the command detected in the command execution mode is canceled.

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