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:
Oct. 12, 1999
Filed:
Mar. 28, 1997
Andrew Augustus Bjorksten, Austin, TX (US);
Paul Gerard Villarrubia, Round Rock, TX (US);
Brian Allan Zoric, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A system and method are provided for distributing clock signals within integrated circuitry. The system includes a number of cells for the integrated circuitry such that the cells include substantially horizontal regions within which are disposed substantially horizontal lines representative of a first clock. The cells also include substantially vertical regions within which are disposed vertical lines representative of a second clock. The cells are disposed in substantially horizontal layers. The vertical regions, including the vertical lines representative of a second clock are substantially vertically aligned. The cells include circuitry disposed within each cell such that a first portion of such circuitry includes signal wiring, and a second portion of such circuitry includes clock wiring, and such that the disposition of said circuitry minimizes a cumulative length of signal wiring and clock wiring.