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Noncontact IC card

  • US 6,036,100 A
  • Filed: 10/08/1997
  • Issued: 03/14/2000
  • Est. Priority Date: 05/13/1997
  • Status: Expired due to Term
First Claim
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1. A noncontact IC card for exchanging data with a host system apparatus using radio frequency signals or other noncontact medium, comprisingan interface for interfacing with said host system apparatus,a memory unit for storing data,a submemory unit for temporarily storing data, anda control circuit unit for controlling operation of said submemory unit, and controlling operation of said memory unit according to a command input from said host system apparatus via said interface,wherein said control circuit begins processing the data input from said interface or the data stored in said submemory unit only after confirming that a predefined receiving time has elapsed and no additional data is input from said interface when the predefined receiving time has elapsed.

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