Apparatus and method for verifying the authenticity of a circuit

Details Apparatus and method for verifying the authenticity of a circuit Apparatus and method for verifying the authenticity of a circuit

1992-04-17

1995-07-18

Beausoliel, Jr., Robert W.

Excavating

371 372, G06F 1110

Patent

active

054348706

ABSTRACT:
Disclosed is an apparatus and method for verifying the authenticity of a circuit board incorporated in a system. The method employs signal representing a unique identifier, such as a serial number and an associated error check code, to identify the circuit board. The identifier signal is passed from the circuit board to the system when the circuit board is initialized. To verify that a circuit board is authentic, the error check code (ECC) represented in the second part of the circuit board's identifier signal is verified. If the ECC is not correct then the circuit board is left unused. Next, the first part of the identifier signal (e.g. the serial number) is compared to the identifier signals for all other circuit boards mounted within the system. If a match of any two identifier signals is found, all circuit boards associated with the common identifier signal are left unused. If no duplicates are found and the ECC was correct, the circuit board is permitted to function.

REFERENCES:
patent: 3735106 (1973-05-01), Hollaway
patent: 3898631 (1975-08-01), Brown et al.
patent: 4193061 (1980-03-01), Zoltai
patent: 4380070 (1983-04-01), Steiner
patent: 4598459 (1986-06-01), Klink et al.
patent: 4677606 (1987-06-01), Ogata et al.
patent: 4750136 (1988-06-01), Arpin et al.
patent: 4799635 (1989-01-01), Nakagawa
patent: 4817091 (1989-03-01), Katzman et al.
patent: 5146172 (1992-09-01), Mehr-Ayin et al.
patent: 5164944 (1992-11-01), Benton et al.
patent: 5319598 (1994-06-01), Aralis et al.
Glenda R. Robinson `Result of the Desc Test Facility's Efforts to Improve the Quality of Electronic Replacement Parts` pp. 1276-1280.

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