Global Patent Index - EP 0972265 A1

EP 0972265 A1 2000-01-19 - TRANSACTION SYSTEM

Title (en)

TRANSACTION SYSTEM

Title (de)

TRANSAKTIONSSYSTEM

Title (fr)

SYSTEME DE TRANSACTION

Publication

EP 0972265 A1 (EN)

Application

EP 99901794 A

Priority

  • GB 9900239 W
  • GB 9801439 A

Abstract (en)

[origin: GB2333665A] A transaction system comprises a terminal and a contact less token which communicate over an inductive coupling. Power and data are transmitted by the terminal to the token by a carrier signal. The token modulates the carrier signal by drawing more power from the signal. Data receiving means receives a first and second carrier signal, the first carrier signal being a version of the original carrier phase shifted 58 by +X‹ and the second carrier signal being a version of the original carrier shifted 60 by (X+ 180)‹. The first carrier is transmitted by the terminal and a signal containing the first carrier and the modulated signal from the token and the second carrier are summed 68 to produce a data signal. The token may be a smart card.

IPC 1-7 (main, further and additional classification)

G06K 7/00

IPC 8 full level (invention and additional information)

G06K 7/00 (2006.01)

CPC (invention and additional information)

G06K 7/0008 (2013.01)

Citation (search report)

See references of WO 9938106A1

Designated contracting state (EPC)

DE ES FR GB IT

EPO simple patent family

GB 2333665 A 19990728; GB 2333665 B 20001129; GB 9801439 D0 19980318; AU 2179199 A 19990809; EP 0972265 A1 20000119; WO 9938106 A1 19990729

INPADOC legal status


2004-02-04 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20030801

2003-08-20 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: MARCONI UK INTELLECTUAL PROPERTY LTD

- Ref Legal Event Code: RAP1

2000-01-19 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991020

2000-01-19 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE ES FR GB IT