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Enhancement of chip card security 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G06K-019/00
출원번호 US-0689089 (1996-08-05)
발명자 / 주소
  • Colgate
  • Jr. Gilbert
출원인 / 주소
  • American Bank Note Holographics, Inc.
대리인 / 주소
    Cooper & Dunham LLP
인용정보 피인용 횟수 : 138  인용 특허 : 0

초록 ▼

A chip card, such as a financial transaction card, having first identifying data written in a read-only memory portion of circuitry contained in the card, wherein second and third identifying data are respectively coded in a machine readable optically variable device (e.g., a hologram) and a magneti

대표청구항 ▼

[ I claim:] [1.] A method of enhancing the security of a chip card that contains an integrated circuit including a changeable memory and a write once/read only memory, said method comprising(a) writing first identifying data in said write once/read only memory;(b) establishing, on an external surfac

이 특허를 인용한 특허 (138)

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    상세보기
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