The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 20, 2016
Filed:
May. 17, 2015
Electronics and Telecommunications Research Institute, Daejeon, KR;
Moon-Seok Kim, Daejeon, KR;
Sang-Kyung Yoo, Daejeon, KR;
Seok Ryu, Daejeon, KR;
Bong Soo Lee, Daejeon, KR;
Rae Lee, Daejeon, KR;
Junki Kang, Daejeon, KR;
Sanghan Lee, Daejeon, KR;
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon, KR;
Abstract
An apparatus and method that prevent a bit error in a static random access memory (SRAM)-based Physically Unclonable function (PUF). The method for preventing an error in a PUF includes selecting any value, from a physically unclonable function based on a volatile memory device, as an input value, and checking a response corresponding to the selected input value, classifying cells having a plurality of bits corresponding to the response depending on frequency of error occurrence, calculating a number of white cells, in which an error does not occur, from classified results, and determining whether the number of white cells is greater than a preset threshold number of white cells, and selecting an input value of the physically unclonable function based on results of determination.