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. 12, 1997
Filed:
Sep. 08, 1995
Applicant:
Inventors:
Robert Paul Masleid, Austin, TX (US);
Larry Bryce Phillips, Austin, TX (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
327297 ; 327292 ; 327293 ; 327565 ; 257208 ; 257786 ;
Abstract
A clock distribution network for distributing a clock signal across a VLSI chip. A H-tree is combined with an x-y grid to allow buffering of the clock signal, while minimizing clock skew across the chip. The H-tree distributes a plurality of repower buffer levels above a final repower buffering level. The output of the final level are coupled by the x-y grid to minimizes clock skew caused by the chip and by local loading variations in the circuits.