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:
Jan. 06, 2026
Filed:
Jun. 27, 2024
Cypress Semiconductor Corporation, San Jose, CA (US);
Senwen Kan, Austin, TX (US);
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
A physical unclonable function (PUF) device is disclosed. The PUF device includes ring oscillators. Each ring oscillator generates an oscillating signal based on an input challenge. The PUF device further includes counters. Each counter counts a number of oscillations in an oscillating signal generated by a corresponding ring oscillator, and produce a counter value representing the counted number of oscillations. The PUF device further includes comparators. Each comparator compares a counter value with a median counter value, and produce a resulting value. The PUF device further includes a response generator that generates a first response based on the resulting values. The first response includes an address used to index into a memory device to read PUF data and memory repair data from the memory device. The PUF device further includes a PUF output generator that generates a second response based on the PUF data and the memory repair data.