Global Patent Index - EP 1031114 A1

EP 1031114 A1 2000-08-30 - A SYSTEM FOR CONTACTLESS BIDIRECTIONAL TRANSMISSION OF DATA AND POWER BETWEEN A READER AND A CHIP-CARD, PARTICULARLY FOR TELEPHONY APPLICATIONS

Title (en)

A SYSTEM FOR CONTACTLESS BIDIRECTIONAL TRANSMISSION OF DATA AND POWER BETWEEN A READER AND A CHIP-CARD, PARTICULARLY FOR TELEPHONY APPLICATIONS

Title (de)

SYSTEM ZUR BIDIREKTIONALEN KONTAKTLOSEN ENERGIE UND DATENÜBERTRAGUNG ZWISCHEN EINEM LESER UND EINER CHIPKARTE, BESONDERS FÜR FERNSPRECHANWENDUNGEN

Title (fr)

SYSTEME DE TRANSMISSION BIDIRECTIONNELLE, SANS CONTACT, DE DONNEES ET PUISSANCE ENTRE UN LECTEUR ET UNE CARTE A PUCE, DESTINE NOTAMMENT A DES APPLICATIONS TELEPHONIQUES

Publication

EP 1031114 A1 (EN)

Application

EP 99947302 A

Priority

  • EP 9906674 W
  • IT TO980780 A

Abstract (en)

[origin: WO0016253A1] A system for contactless bidirectional transmission of data and power between a reader and a chip-card, comprising a first optical path for transmission of data and power with a light source (11) on the reader (10), a photodiode (26) and a control logic unit (CPU) on the chip-card (20), and a second magnetic path for transmission of data and power with a first inductor coil (17) on the reader (10) and a second induced coil (23) on the chip-card (20). According to the invention, a first auxiliary circuit (30) is also provided, which resides in the chip-card (20), has a data demodulation function and is sensitive to the simultaneous presence of the data item signal (Se) and of a minimum level (Vk) of the light signal received by the photodiode (26), as well as a second auxiliary circuit (40) which also resides in the chip-card (20) and is adapted to provide a frequency signal (VOUT) which is proportional to the intensity of the voltage (Vs), generated by induction and present across the second induced coil (23).

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

G06K 19/07; G06K 7/00; G06K 7/10

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 0016253A1

Designated contracting state (EPC)

DE ES FR GB IT

EPO simple patent family

WO 0016253 A1 20000323; AU 6080999 A 20000403; EP 1031114 A1 20000830; IT 1304989 B1 20010405; IT TO980780 A1 20000315

INPADOC legal status


2004-05-19 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

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

2002-10-23 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020403

2000-10-04 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000804

2000-08-30 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE