IC card having a function to exclude erroneous recording

Details IC card having a function to exclude erroneous recording IC card having a function to exclude erroneous recording

1987-11-09

1989-10-31

Trafton, David L.

Registers

Systems controlled by data bearing records

Banking systems

235436, 235441, 3408255, 902 26, G06F 1530

Patent

active

048779458

ABSTRACT:
An IC card system comprises an IC card, each card including a microprocessor, a communication interface, a power supply interface, and memories such as RAM, ROM and EEPROM, and an external device such as a terminal. The terminal functions to supply electric power and send commands to the IC card, and includes a card reader/writer effecting data processing for transactions. The commands include a start command and an end command for the transaction data processing for the IC card connected therewith, and the IC card comprises a validity data flag table within the EEPROM. When a start command is received, the flag table records the validity flag in an invalid state and holds such state as long as an end command is not received.

REFERENCES:
patent: 4683372 (1987-07-01), Matsumoto
patent: 4736094 (1988-04-01), Yoshida
patent: 4780602 (1988-10-01), Kawana et al.
Nikkei Electronics, Oct. 21, 1985, pp. 127-154.

Affiliated with

Also associated with

Rating

IC card having a function to exclude erroneous recording does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with IC card having a function to exclude erroneous recording, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and IC card having a function to exclude erroneous recording will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-627387