System and method for providing secure boundary scan...

Details System and method for providing secure boundary scan... System and method for providing secure boundary scan...

2008-07-08

2008-07-08

Chung, Phung M (Department: 2117)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital logic testing

C714S736000

Reexamination Certificate

active

07398441

ABSTRACT:
The present invention is a method including: receiving an input key string; comparing the input key string with a stored key string; and granting access to a boundary scan chain when the input key string matches the stored key string, the boundary scan chain being at least one of: a Boundary Data Register of at least one Joint Test Action Group (JTAG)-compliant device; or, a plurality of communicatively coupled JTAG-compliant devices.

REFERENCES:
patent: 5457408 (1995-10-01), Leung
patent: 5894213 (1999-04-01), Nakamura
patent: 6574762 (2003-06-01), Karimi et al.
patent: 7274283 (2007-09-01), Yosim et al.

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