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:
Sep. 11, 2007
Filed:
Mar. 03, 2003
Abel Francois, Rueschlikon, CH;
Bernd Leppla, Buchen-Boedigheim, DE;
Ronald Peter Luijten, Horgen, CH;
Norbert Schumacher, Neuhausen, DE;
Abel Francois, Rueschlikon, CH;
Bernd Leppla, Buchen-Boedigheim, DE;
Ronald Peter Luijten, Horgen, CH;
Norbert Schumacher, Neuhausen, DE;
International Business Machines Corporation, Armonk, NY (US);
Abstract
Apparatus and method of operating a crossbar switch () having a control logic, an output port scheduler (), n input ports (i, . . . , i) and m output ports (o, . . . , o), wherein information packets are routed from said n input ports to said m output ports, and wherein said output port scheduler () controls the sequence of packets output at said output ports (o, . . . , o). To ensure fairness regarding packet transfer/routing and the packet sequence, an input port number corresponding to the input port a new information packet is arriving at is stored in round-robin mode in a port number buffer (pnb). For output, said input port number is retrieved from said port number buffer (pnb) in round robin mode, too, and with this port number, address information regarding the packet is obtained from a control logic buffer of the crossbar switch ().