Method and coupler for interfacing a portable data carrier with

Details Method and coupler for interfacing a portable data carrier with Method and coupler for interfacing a portable data carrier with

1990-07-05

1992-09-22

Pitts, Harold

Registers

Systems controlled by data bearing records

Credit or identification card systems

235379, 235492, 902 4, G06K 500

Patent

active

051499452

ABSTRACT:
This invention relates to a coupler which allows a host processor such as, for example, a personal computer or point of sale device or the like to communicate with and control a portable data carrier. A portable data carrier is a portable device which contains integrated circuit(s). Examples of portable data carriers are Integrated Circuit Cards, data keys, super smart cards, and smart coins. The coupler is adapted to receive the card in a standard card receptacle or card reader to establish connection between the card and a connector in the coupler to which the necessary control signals are applied. The presence of an integrated circuit card is detected in the coupler's card connector terminal which provides a card present signal to the host processor. The host, in turn, provides Clear-To-Send (CTS), Request-To-Send (RTS), Data-Set-Ready (DSR) and Data-Terminal-Ready (DTR) signals. The input/output data from the input/output line channel of the IC card is connected to the Transmit-Data (TX) and Receive-Data (RX) lines of the host processor without the necessity of retransmitting characters communicated between the portable IC and on data carrier and the host processor.

REFERENCES:
patent: 3971916 (1976-07-01), Moreno
patent: 4070648 (1978-01-01), Mergenthaler
patent: 4256955 (1981-03-01), Giraud
patent: 4639889 (1987-01-01), Matsumoto

Affiliated with

Also associated with

Rating

Method and coupler for interfacing a portable data carrier with does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and coupler for interfacing a portable data carrier with , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and coupler for interfacing a portable data carrier with will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1070587