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US 5,949,880 AGranted
Transfer of valuable information between a secure module and another module
AssigneeDallas Semiconductor Corporation
InventorsStephen M. Curry, Donald W. Loomis, Michael L. Bolan
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Abstract
The present invention relates to system, apparatus and method for communicating valuable data from a portable module to another module via an electronic device. More specifically, the disclosed system, apparatus and method are useful for enabling a user to fill a portable module with a cash equivalent and to spend the cash equivalent at a variety of locations. The disclosed system incorporates an encryption/decryption method.
Claims6
A method for electronically transferring units of exchange between a first module and a second module, comprising the steps of:
- a. initiating communication between said first module and an electronic device;
- b. passing a first value datum from said first module to said electronic device;
- c. passing said first value datum from said electronic device to said second module;
- d. performing a mathematical calculation on said first value datum thereby creating a second value datum;
- e. passing said second value datum from said second module to said electronic device;
- f. passing said second value datum from said electronic device to said first module;
- g. storing said second value datum in said first module;
- and
- h. discontinuing communication between said first module and said electronic device.
6 more elements
Dependencies are inferred from the claim text.