File managing method requiring a change in key data and IC card

Details File managing method requiring a change in key data and IC card File managing method requiring a change in key data and IC card

1997-03-28

1999-07-27

Le, Thien Minh

Registers

Records

Conductive

235487, 902 1, G06K 1906, G06K 1900

Patent

active

059294280

ABSTRACT:
A file managing method includes a step of setting a key data of a portable storage medium having a plurality of storage areas, a step of determining whether the key data is changed, a step of inhibiting data from being processed in the plurality of storage areas when it is determined that the key data is not changed, and a step of processing data of the plurality of storage areas in response to a given command when it is determined that the key data is changed.

REFERENCES:
patent: 4734568 (1988-03-01), Watanabe
patent: 4985615 (1991-01-01), Iijima
patent: 5097118 (1992-03-01), Iijima
patent: 5226155 (1993-07-01), Iijima
patent: 5384454 (1995-01-01), Iijima
patent: 5410690 (1995-04-01), Kawata
patent: 5473690 (1995-12-01), Grimonprez et al.
patent: 5517014 (1996-05-01), Iijima

Affiliated with

Also associated with

Rating

File managing method requiring a change in key data and IC card does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with File managing method requiring a change in key data and IC card , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and File managing method requiring a change in key data and IC card will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-881213