Global patent index - EP 1041481 A2

EP 1041481 A2 2000-10-04 - Data interchange method and system

Title (en)

Data interchange method and system

Title (de)

System und Verfahren zum Austausch von Daten

Title (fr)

Système et méthode d'échange de données

Publication

EP 1041481 A2 (EN)

Application

EP 00104285 A

Priority

JP 9127399 A

Abstract (en)

Data interchange method and apparatus for enabling an interchange of digital data which is performed among a plurality of parties (10, 20, 30, 40) to be executed without intervening a center system or the like as a third party while assuring the contents of the digital data. When data is transmitted between two parties who transmit and receive the data, a right assignor of the data makes his own digital signature, assures the contents of the data, and transmits the data. A right assignee of the data confirms the contents of the data and the right assignor, subsequently makes his digital signature to the data, and transmits the data to the right assignor. The right assignor checks the data assignee, makes his own digital signature to the data and transfers the right of the data to the assignee, thereby executing the interchange of the data between the two parties. <IMAGE>

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

G06F 1/00; G06F 17/60

IPC 8 full level (invention and additional information)

G06F 12/14 (2006.01); G06F 1/00 (2006.01); G06F 19/00 (2006.01); G06F 21/10 (2013.01); G06F 21/64 (2013.01); G06Q 10/00 (2012.01); G06Q 10/10 (2012.01); G06Q 40/00 (2012.01); G06Q 40/02 (2012.01); G06Q 40/04 (2012.01); G06Q 50/00 (2012.01); G06Q 99/00 (2006.01); G09C 1/00 (2006.01)

CPC (invention and additional information)

G06Q 99/00 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 1041481 A2 20001004; JP 2000285186 A 20001013; SG 100614 A1 20031226

INPADOC legal status

2004-03-03 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Effective date: 20040109

2000-10-04 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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

2000-10-04 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: AL;LT;LV;MK;RO;SI