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:
Jul. 27, 2021
Filed:
Mar. 30, 2019
International Business Machines Corporation, Armonk, NY (US);
Lakshmi N. Reddy, Mount Kisco, NY (US);
Gustavo Enrique Tellez, Essex Junction, VT (US);
Paul G. Villarrubia, Austin, TX (US);
Christopher Joseph Berry, Hudson, NY (US);
Michael Hemsley Wood, Wilmington, DE (US);
Robert A. Philhower, Valley Cottage, NY (US);
Gi-Joon Nam, Chappaqua, NY (US);
Jinwook Jung, White Plains, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
For each of a plurality of source-sink pairs, a corresponding interconnect layer is selected having a reach length which permits propagation of a required signal within a required sink cycle delay. For a first clock cycle, a movable region for a first latch is located as a first plurality of overlapped regions one reach length from a source and the required sink cycle delay number of reach lengths from each one of the sinks; and the first plurality of overlapped regions is represented as nodes on a first cycle level of a topology search graph. Analogous actions are carried out for a second clock cycle of the required sink cycle delay. A latch tree is created based on the topology search graph, wherein a required number of latches is minimized, and at each of the cycle levels, all sinks of source nodes selected at a previous level are covered.