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Dual mode controller for ISO7816 and USB enabled smart cards

  • US 20030155420A1
  • Filed: 10/17/2002
  • Published: 08/21/2003
  • Est. Priority Date: 02/20/2002
  • Status: Active Grant
First Claim
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1. A dual mode smart card controller, comprising an ISO7816 smart card control logic, card detect logic and power control logic;

  • and a USB card identification logic coupled to said card detect logic and adapted to mask a USB smart card from said card detect logic, and signal filter coupled to said smart card control logic and adapted to monitor a preselected smart card signal line and change the state of said signal line if a USB card is present.

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