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. 13, 2022
Filed:
Mar. 04, 2019
Intel Corporation, Santa Clara, CA (US);
Mohamed A. Abdelmoneum, Portland, OR (US);
Nasser A. Kurd, Portland, OR (US);
Thripthi Hegde, Beaverton, OR (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
An apparatus and method to protect unauthorized change to a reference clock for a processor. The apparatus comprises: a first oscillator to generate a first clock; a second oscillator to generate a second clock; a third oscillator to generate a third clock; a first counter to count frequency of the first clock with respect to a fourth clock; a second counter to count frequency of the second clock with respect to the fourth clock; a third counter to count frequency of the third clock with respect to the fourth clock; and a circuitry to compare frequencies of the first, second, and third clocks with one another. The oscillators can be embedded in an interposer or package. These oscillators include one or more of: LC oscillator, micro electro-mechanical system (MEMs) based resonator, or ring oscillator.