Method of checking authenticity of sheet with built-in electronic circuit chip

• US 20060108412A1
• Filed: 01/04/2006
• Published: 05/25/2006
• Est. Priority Date: 12/07/1998
• Status: Active Grant

• Current Assignee: Asahiko Isobe, Chikashi Okamoto, Chizuko Yasunobu, Hiroyuki Yagi, Kazuo Takaragi, Kazutaka Tsuji, Mitsuo Usami, Yasuhiro Tsunemi
• Original Assignee: Asahiko Isobe, Chikashi Okamoto, Chizuko Yasunobu, Hiroyuki Yagi, Kazuo Takaragi, Kazutaka Tsuji, Mitsuo Usami, Yasuhiro Tsunemi
• Inventors: Usami, Mitsuo, Yagi, Hiroyuki, Tsuji, Kazutaka, Okamoto, Chikashi, Takaragi, Kazuo, Yasunobu, Chizuko, Tsunemi, Yasuhiro, Isobe, Asahiko
• Granted Patent: US 7,309,019 B2
• Time in Patent Office: Days
• US Class Current: 235/379
• CPC Class Codes: G06Q 20/042 characterized in that the payment protocol involves at least one cheque
• CPC Class Codes: G07D 7/003 using security elements using digital security elements G07D7/004
• CPC Class Codes: G07D 7/0047 using checkcodes, e.g. coded numbers derived from serial number and denomination
• CPC Class Codes: G07D 7/01 Testing electronic circuits therein
• CPC Class Codes: G07D 7/12 Visible light, infrared or ultraviolet radiation
• CPC Class Codes: G07D 7/2033 Matching unique patterns, i.e. patterns that are unique to each individual paper

Abstract

A method of checking sheets as to forgery thereof, the sheet being provided with an electronic circuit chip from or in which information can be read out or written and having visible information. The method includes a step of encrypting the visible information of the sheet and storing the encrypted visible information in the electronic circuit chip, and a step of determining discriminatively the authenticity of the sheet by comparing the visible information of the sheet with the information stored in the electronic circuit chip.

Claims

1-8. -8. (canceled)

9. A system for determining authenticity of an object carrying visible information therein, said system including an authenticity determining unit and a memory unit,

said object including an electronic circuit chip which stores a unique number and is difficult to rewrite the same, and

said memory unit storing said unique number and information common to objects of a same species as said object, with a correlation between said stored information and said unique number,

wherein said authenticity determining unit

reads out said stored unique number from said electronic circuit chip;

obtains from said memory unit the stored information correlated with said unique number which is stored in said memory unit;

acquires information obtainable from said object by measuring or scanning; and

compares said obtained information with the information acquired by measuring or scanning said object to determine whether said object is authentic or not.

10. An authenticity determining system according to claim 9, wherein said authenticity determining unit includes a transmitter and a receiver,

said transmitter is responsive to an instruction from said control unit to supply electric power to said object by transmission of an electric wave,

said electronic circuit chip provided in said object is responsive to supply of electric power by said electric wave to transmit said unique number stored therein, and

said receiver is responsive to reception of said transmitted unique number to output the unique number to a control unit.

11. An authenticity determining system according to claim 9, wherein said memory unit encrypts the information unique to said object, said electronic circuit chip or a combination of the object and the electronic circuit chip when taken out by a control unit,

said authenticity determining unit includes a decrypting unit, and

said decrypting unit decrypts the information unique to said object, said electronic circuit chip or a combination of the object and the electronic circuit chip when taken out by said control unit and outputs the decrypted information to said control unit.

12. An authenticity determining system according to claim 9, wherein said memory unit is formed of another electronic circuit chip provided in said object.

13. An authenticity determining system according to claim 9, wherein said authenticity determining unit comprises an output unit, and a control unit outputs a result of said determination by said authenticity determining unit to said output unit.

14. An authenticity determining system according to claim 9, wherein said authenticity determining unit comprises an image processing unit, and

said image processing unit image-processes information obtained from said object by measuring on the object, and outputs a result of the image-processing therefor to said authenticity determining unit.