Data transfer system having a terminal and a portable data carri

Details Data transfer system having a terminal and a portable data carri Data transfer system having a terminal and a portable data carri

1997-03-31

1999-03-30

Gross, Anita Pellman

Registers

Systems controlled by data bearing records

Credit or identification card systems

235492, 235379, G06K 500

Patent

active

058892664

ABSTRACT:
In a data transfer system having at least one terminal and at least one portable data carrier configuration, for example a chip card, and a method of recharging the portable data carrier configuration through the use of the terminal, an area of a non-volatile memory of the card representing a monetary value is subdivided into two value areas of which only one is activatable into a non-volatile state and the other can only be activated temporarily in each case. When the card is recharged, the new counter status is written into the value area which has initially only been activated temporarily. It is only after checking the correct writing that this value area is switched in such a way that it is activatable into a non-volatile state.

REFERENCES:
patent: 4809225 (1989-02-01), Dimmler et al.
patent: 4853526 (1989-08-01), Effing
patent: 4864109 (1989-09-01), Minematsu et al.
patent: 5001332 (1991-03-01), Schrenk
patent: 5225664 (1993-07-01), Iijima
patent: 5297077 (1994-03-01), Imai et al.

Affiliated with

Also associated with

Rating

Data transfer system having a terminal and a portable data carri does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data transfer system having a terminal and a portable data carri, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data transfer system having a terminal and a portable data carri will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1216897