Extension of the sim card in gsm devices
2 Assignments
0 Petitions
Accused Products
Abstract
Circuit arrangement as an interface between a SIM card and a GSM modem, which has a bidirectional data line that connects a card data input/output of the SIM card to a modem data input/output of the GSM modem, with the data line being coupled to at least one edge driver.
19 Citations
28 Claims
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1-14. -14. (canceled)
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15. An interface between a SIM card and a GSM modem comprising:
a bidirectional data line that connects a card data input/output of the SIM card to a modem data input/output of the GSM modem, wherein the data line is coupled to at least one edge driver. - View Dependent Claims (16, 17, 18)
- 24. A method for bidirectional data transmission between a SIM card and a GSM modem wherein the bidirectional data transmission takes place without the use of a control signal for the data direction on a data line that connects the SIM card and the GSM modem.
Specification