EP 0413733 A4 19911016 - TOKEN AND PAYMENT SYSTEM
Title (en)
TOKEN AND PAYMENT SYSTEM
Publication
Application
Priority
AU PI788088 A 19880422
Abstract (en)
[origin: WO8910599A1] A portable token, containing a storage circuit capable of being re-written, adapted to store a representation of a monetary value (a "credit"). Such representation being in a number-complement form, that is, the value being represented as the difference between the highest number which can be represented in the given storage, and the value actually intended to be represented. The said token being so adapted as to accept the input of a second number, said second number being in normal arithmetic representation, constituting the cash-value of a "charge" which it is desired to apply against the stored credit aforesaid. The application of said "charge" being made by performing a normal arithmetic addition upon the stored value, and the said "charge" number. The appearance of a "carry" at the conclusion of such addition (i.e. denoting that the resulting sum is too large to store in the available storage means) serving to denote an invalid charge, said "carry" serving both to inhibit any alteration of the said stored credit value, and to indicate to an associated reader means, that the attempted transaction may not proceed.
IPC 1-7
IPC 8 full level
G06K 19/00 (2006.01); G06K 19/07 (2006.01); G07B 15/00 (2006.01); G07F 1/06 (2006.01); G07F 7/08 (2006.01); G07F 7/10 (2006.01)
CPC (source: EP)
G06K 19/07 (2013.01); G06Q 20/341 (2013.01); G06Q 20/4097 (2013.01); G07F 7/0866 (2013.01); G07F 7/1008 (2013.01)
Citation (search report)
- [X] US 3870866 A 19750311 - HALPERN JOHN W
- [A] FR 2503423 A1 19821008 - FLONIC SA [FR]
- See references of WO 8910599A1
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 8910599 A1 19891102; EP 0413733 A1 19910227; EP 0413733 A4 19911016; JP H04501026 A 19920220; ZA 892976 B 19901228
DOCDB simple family (application)
AU 8900175 W 19890421; EP 89905383 A 19890421; JP 50507889 A 19890421; ZA 892976 A 19890421