Integrated circuit with anti-counterfeiting measures

Details Integrated circuit with anti-counterfeiting measures Integrated circuit with anti-counterfeiting measures

2007-01-11

2008-11-18

Cho, James H. (Department: 2819)

Electronic digital logic circuitry

Security

C257S403000, C726S034000

Reexamination Certificate

active

07453281

ABSTRACT:
An anti-counterfeiting circuit that is incorporated into an authentic integrated circuit (IC) design, which induces a random failure in a counterfeited IC when the counterfeit IC is manufactured from a reverse-engineered authentic IC. The anti-counterfeiting circuit uses two signals of differing frequencies, which activate a disrupt signal when the two signals meet a predetermined failure criteria, for example, equivalent rising edges. The disrupt signal causes a signal gate or similar element within the counterfeited IC to fail, disrupt, or in some way change a designed behavior of the IC. The disrupt signal may be reset so that the failure will occur again when predetermined failure criteria are met. The authentic IC functions according to design because at least one of the elements in the anti-counterfeit circuit is a camouflage circuit, thus, in an authentic IC the anti-counterfeit circuit is not operatively coupled.

REFERENCES:
patent: 4583011 (1986-04-01), Pechar
patent: 4766516 (1988-08-01), Ozdemir et al.
patent: 5295187 (1994-03-01), Miyoshi
patent: 5394274 (1995-02-01), Kahn
patent: 6064110 (2000-05-01), Baukus et al.
patent: 6085319 (2000-07-01), Uemura
patent: 6246254 (2001-06-01), Choukalos et al.
patent: 6535016 (2003-03-01), Choukalos et al.
patent: 2004/0257112 (2004-12-01), Hidaka et al.
patent: 2005/0017752 (2005-01-01), Kim
patent: 00316805 (1989-05-01), None
Sandige, R.S., “Bistable Devices”, The Electrical Engineering Handbook, 2nd Edition, Section 79.3—pp. 24-25.

Affiliated with

Also associated with

Rating

Integrated circuit with anti-counterfeiting measures does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Integrated circuit with anti-counterfeiting measures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated circuit with anti-counterfeiting measures will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4027489