Chip card with data and programs protected against ageing

Details Chip card with data and programs protected against ageing Chip card with data and programs protected against ageing

1993-12-20

1997-04-29

Chan, Eddie P.

Registers

Coded record sensors

Particular sensor structure

395430, 235492, 365222, G06F 1216

Patent

active

056257910

ABSTRACT:
In chip cards comprising non-volatile electrically erasable and programmable memories, to avoid the risks due to an ageing of the EEPROM memories, there is provided a procedure for the automatic refreshing of the contents of certain zones of the memory. The refreshing can take place at predetermined time intervals or at the end of a predetermined number of uses or routinely, whenever the card is powered, when the refresh operation relates to only one part of a zone, the address of this part being obtained by means of a random generator.

REFERENCES:
patent: 4956795 (1990-09-01), Yamaguchi et al.
patent: 5051953 (1991-09-01), Kitazawa et al.
patent: 5365486 (1994-11-01), Schreck

Affiliated with

Also associated with

Rating

Chip card with data and programs protected against ageing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Chip card with data and programs protected against ageing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chip card with data and programs protected against ageing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-714131