IC card system with control of data-writing process

Details IC card system with control of data-writing process IC card system with control of data-writing process

1987-03-03

1989-02-07

Leung, Philip H.

Registers

Records

Conductive

235380, 2353825, 34082534, G06K 500

Patent

active

048033510

ABSTRACT:
An IC card system comprises an IC card terminal and an IC card which is inserted into the terminal, the terminal including a power-supply circuit for supplying data-writing power to a memory provided in the IC card, and a timer circuit for measuring a period of time corresponding to the maximum time during which one unit of data can be written into the memory. The supply of power to the IC card is renewed every time the IC card sends a request for an unit of data, within the period of time set in the time-measuring circuit. The supply of power is stopped when the IC card makes no request for an unit of data within the above-mentioned period of time.

REFERENCES:
patent: 4425490 (1984-01-01), Takeda et al.
patent: 4650975 (1987-03-01), Kitchener
patent: 4710613 (1987-12-01), Shigenaga

Affiliated with

Also associated with

Rating

IC card system with control of data-writing process 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 system with control of data-writing process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and IC card system with control of data-writing process will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1086032