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. 17, 2001
Filed:
Apr. 21, 1999
Applicant:
Inventor:
Padmanabha I. Venkitakrishnan, Sunnyvale, CA (US);
Assignee:
Hewlett-Packard Co, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/517 ; G06F 1/580 ; G06F 1/336 ; G06F 1/320 ;
U.S. Cl.
CPC ...
G06F 1/517 ; G06F 1/580 ; G06F 1/336 ; G06F 1/320 ;
Abstract
The present invention provides a new crossbar switch which is implemented by a first plurality of chips. Each chip is completely programmable to couple to every node in the system, e.g., from one node to about one thousand nodes (corresponding to present-day technology limits of about one thousand I/O pins) although conventional systems typically support no more than 32 nodes. The crossbar switch can be implemented to support only one node, then one chip can be used to route all 64 bits in parallel for 64 bit microprocessors. A second plurality of chips in parallel provides the redundancy necessary for a high availability system.