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Memory authentication for intrinsically safe field maintenance tools 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G06F-021/00
출원번호 UP-0440041 (2003-05-16)
등록번호 US-7526802 (2009-07-01)
발명자 / 주소
  • Mathiowetz, Brad N.
  • Kantzes, Christopher P.
  • Opheim, Gregory J.
출원인 / 주소
  • Fisher Rosemount Systems, Inc.
대리인 / 주소
    Christenson, Christopher R.
인용정보 피인용 횟수 : 1  인용 특허 : 113

초록 ▼

A memory authentication technique for field maintenance tools is provided. A non-volatile electronic memory includes a unique software identifier. A non-reversible algorithm is applied to the unique software identifier to obtain a result. The result is then encrypted and compared with a stored encry

대표청구항 ▼

What is claimed is: 1. A method for authenticating electronic removable non-volatile memory in a handheld field maintenance tool, the method comprising: applying a non-reversible algorithm to a unique, non-changeable serial number of the memory to obtain a result; encrypting the result; comparing t

이 특허에 인용된 특허 (113)

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이 특허를 인용한 특허 (1)

  1. Wehrs, David L.; LeCuyer, Gregory J.; Lo, Jessica; McCoy, Steven J.; Westfield, Brian L., Process variable transmitter with two-wire process control loop diagnostics.
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