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:
Nov. 18, 2008
Filed:
Dec. 17, 2002
Geetha Arthanari, Essex Junction, VT (US);
Keith M. Carrig, Essex Junction, VT (US);
Mark R. Lasher, Colchester, VT (US);
Daniel R. Menard, Arlington, MA (US);
Geetha Arthanari, Essex Junction, VT (US);
Keith M. Carrig, Essex Junction, VT (US);
Mark R. Lasher, Colchester, VT (US);
Daniel R. Menard, Arlington, MA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method of designing a clock tree in an integrated circuit combines steps of making a list of all clock sinks; positioning a temporary reference insertion point (TIP); grouping the sinks together with structured clock buffers (SCBs) in a set of levels; and moving the SCBs to improve symmetry of the tree. The SCBs may be of several sizes and may be positioned horizontally or vertically and moved within limits to permit the program to calculate a complete tree.