G - Physics – 07 – F
Patent
G - Physics
07
F
354/41, 352/57
G07F 7/10 (2006.01)
Patent
CA 1287920
- 21 - ARRANGEMENT FOR A PORTABLE DATA CARRIER HAVING MULTIPLE APPLICATION FILES Abstract A portable data carrier typically the size of a standard plastic credit card is usable in a variety of applications, from custom repertory dialing to storage of individual medical and/or banking records. The portable data carrier provides a high security file system capable of supporting multiple applications, all independent of the details of the data carrier's generic internal structure. Although the data carrier looks and feels much like an ordinary credit card, it includes a computer and an electrically erasable programmable read-only memory. Power for operation of the portable data carrier is provided from an associated station via a reader/writer. The reader/writer also couples data between the data carrier and the associated station. Security is enhanced since application software in the station receiving and interpreting the data from a file sees a contiguous stream of bytes relating only to the file of the application being accessed. No information is provided to a user of a particular application about other applications in the data carrier or about the data carrier's internal file structure.
535966
Anderl Ewald Christoph
Frankel Oren
Zahavi Avi
American Telephone And Telegraph Company
Kirby Eades Gale Baker
LandOfFree
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