Verification system, for example for passing through a toll point

• US 4,501,958 A
• Filed: 03/03/1982
• Issued: 02/26/1985
• Est. Priority Date: 03/05/1981
• Status: Expired due to Fees

• Current Assignee: Electronique Marcel Dassault
• Original Assignee: Electronique Marcel Dassault
• Inventors: Glize, Jean-Pierre, Gaucher, Michel M.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): NOT, DEFINED
• Application Number:
  US06/354,506
• Time in Patent Office: 1,091 Days
• Field of Search: 235/380, 235/381, 235/382, 235/379, 235/487, 235/492, 235/378, 235/377, 235/376, 235/375, 340/825.31, 340/825.33, 340/825.35
• US Class Current: 235/382
• CPC Class Codes: G06Q 20/341 Active cards, i.e. cards including their own processing means, e.g. including an IC or chip
• CPC Class Codes: G06Q 20/363 with the personal data of a user
• CPC Class Codes: G06Q 20/4093 Monitoring of device authentication
• CPC Class Codes: G07B 15/063 using wireless information transmission between the vehicle and a fixed station identification of vehicles G08G
• CPC Class Codes: G07C 9/28 the pass enabling tracking or indicating presence
• CPC Class Codes: G07F 7/0866 by active credit-cards adapted therefor G07F7/1008 takes precedence
• CPC Class Codes: G07F 7/1008 Active credit-cards provided with means to personalise their use, e.g. with PIN-introduction/comparison system

Abstract

A system for verifying an operation in particular one that includes payment, the system comprising at least one terminal (11) and a plurality of portable objects (10) which may be coupled, preferably without contact, to the terminal. The terminal emits repeated interrogation messages suitable for triggering reading of the contents of a shift register (60, 190) in a portable object when said object is coupled thereto, only after a comparator has verified concordance between first validity data from the portable object and check data from the terminal. After processing, the terminal re-writes updated useful data in the register. Re-writing is only authorized after a comparator (240) has verified concordance between second validity data stored in the shift register with check data transmitted by the terminal into a register (220) of the portable object. The check data is produced by the terminal after decoding the validity data contained in the message derived from reading the portable object (10).

Claims

1. A portable object for use with an automatic verification system, comprising:

a casing;

an electronic circuit in said casing having at least one shift register memory for storing data including an indication of a number of units of value and quality data;

an emitter-receiver device in said casing capable of non-contacting coupling to a terminal of the verification system for emitting signals of bits in series corresponding to a read of the data in said shift register, and for receiving signals of bits in series to write data in said shift register;

means in said casing for storing check data received from said terminal through said emitter-receiver device;

a device for verifying the concordance between a portion of the received check data and first validity data stored in said object to deliver a read authorization;

means responsive to a read authorization for delivering the data stored in said shift register memory to said emitter-receiver device, for transmission to said terminal, while recirculating the same data through said shift register memory;

a device for verifying the concordance between said check data and second validity data stored in said object and comprising a portion of the data in said shift register memory, to deliver a write authorization, and

means responsive to such write authorization for filling said shift register memory with new data received from said terminal,

whereby said terminal can change the second validity data upon each rewriting of new data in the portable object, and together with said units of value.

2. The portable object defined in claim 1 wherein the validity data is constituted by bits dispersed among the bits of other data stored in the shift register.

3. The portable object defined in claim 1 wherein the verification device comprises bit-by-bit comparator cells for comparing the validity data and the check data, said cells being connected to corresponding cells in the shift register or the means for storing check data in a different order from the order in which the bits of at least one of these data items is transmitted.

4. The portable object defined in claim 1 wherein the verification device is connected by a first link to cells of the shift register associated with the validity data, and by a second link to cells of check data storage means, one of said links including a coder for scrambling the correspondance between data items.

5. The portable object defined in claim 1, further comprising a storage device for storing check data when reading, and verification means for verifying the concordance between said check data and validity data stored in said shift register.

6. The portable object defined in claim 5, comprising means for providing said re-writing authorization in response both to said read verification means and to said first mentioned concordance verification means.

7. The portable object defined in claim 5 or claim 6, comprising means whereby said read validity data is written in the portable object outside said shift register memory.