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:
Aug. 18, 2020
Filed:
Feb. 28, 2017
Applicant:
Amazon Technologies, Inc., Seattle, WA (US);
Inventors:
Eyal Freund, Austin, TX (US);
Yaniv Shapira, Bet Itzhak, IL;
Assignee:
Amazon Technologies, Inc., Seattle, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/12 (2006.01); H03K 3/03 (2006.01);
U.S. Cl.
CPC ...
G06F 1/12 (2013.01); H03K 3/0315 (2013.01);
Abstract
A semiconductor device includes a system clock signal having a system clock period and a digital ring oscillator (DRO) cluster having DRO cells. Each of the DRO cells is disposed at a different location in the semiconductor device for producing a local ring oscillator clock signal. The local ring oscillator clock signal has a ring oscillator clock period that is shorter than the system clock period. The DRO cluster is configured to measure respective ring oscillator clock count in each of the DRO cells during a time window synchronized to the system clock.