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:
Dec. 01, 2015
Filed:
Sep. 30, 2014
Cadence Design Systems, Inc., San Jose, CA (US);
Regis Colwell, Gibsonia, PA (US);
Gilles Lamant, Sunnyvale, CA (US);
Jeremiah Emerson Cessna, Pittsburgh, PA (US);
Khaled M. Elgalaind, Allison Park, PA (US);
Haitham Gad, Allison Park, PA (US);
Hsun-Chieh Yu, Bade, TW;
Ming Yi Fang, Hsin-Chu, TW;
Cadence Design Systems, Inc., San Jose, CA (US);
Abstract
Systems and methods for creating and placing custom guard rings create a guard ring from a plurality of unit cells reflecting the devices that are enclosed in the guard ring. Using a unit cell identified by a design tool user as the basic unit of the guard ring, with a few additional setup parameters, a complete, content-aware guard ring is created. The guard ring will consist of a collection of the identified unit cells placed around the circuit devices that are to be protected. The created guard ring will function as a single circuit component. Edits to the dimensions and/or parameters of the unit cell will affect the placement of the unit cell in the protected area and will therefore require creation of a new guard ring consistent with the changed parameters.