Circuit for generating an identification code for an IC

Details Circuit for generating an identification code for an IC Circuit for generating an identification code for an IC

2007-05-01

2007-05-01

Lee, Seung Ho (Department: 2876)

Registers

Records

Conductive

C235S375000, C235S384000, C700S115000, C716S030000

Reexamination Certificate

active

10778688

ABSTRACT:
A ID circuit produces a unique binary identification code (ID) for each integrated circuit in which it is implemented by setting states of each bit of the ID as a function of random variations in material forming the IC that occur at the time the IC is fabricated. The ID circuit includes an ID generating circuit for generating the ID, a non-volatile memory, and a control circuit for writing the ID generated by the ID generating circuit into the non-volatile memory in response to a first occurrence of a write cue event. Thereafter the control circuit responds to each occurrence of a read cue event by reading the ID out of the non-volatile memory and providing it as an IC output.

REFERENCES:
patent: 5367148 (1994-11-01), Storch et al.
patent: 6161213 (2000-12-01), Lofstrom
patent: 6212638 (2001-04-01), Lee et al.
patent: 6802447 (2004-10-01), Horng
patent: 2003/0151539 (2003-08-01), Wuidart et al.
patent: 2003/0151942 (2003-08-01), Bardouillet et al.

Affiliated with

Also associated with

Rating

Circuit for generating an identification code for an IC does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit for generating an identification code for an IC, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for generating an identification code for an IC will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3800476