Roll back method for a smart card

Details Roll back method for a smart card Roll back method for a smart card

2003-05-16

2008-11-25

Le, Thien M (Department: 2887)

Registers

Records

Conductive

C235S487000

Reexamination Certificate

active

07455234

ABSTRACT:
In a data carrier (2) for contactless communication of storage data (SD) with a reader station (1), a recovery device (13) is provided, with which, following an unexpected abort of the storing of storage data (SD) in a memory (11) by virtue of a lack of supply voltage, a valid storage state can be restored in memory (11). For this purpose, any storage locations that are only weakly stored in memory (11) will be read, and the read-out storage data (SD) will be re-stored in the memory (11).

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patent: 2002/0047920 (2002-04-01), Richter
Rankl et al: “Smart Card Handbook, Passage” Smart Card Handbook, XX, XX, 1998, pp. 1,14,91,103,107-110,127-128.

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