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:
May. 27, 2003
Filed:
May. 24, 1999
International Business Machines Corporation, Armonk, NY (US);
Abstract
A switching system receives a data cell from a set of n input ports for routing to one or more output ports in accordance with the contents of a bitmap value retrieved from the cell upon its receipt. The system has a module comprising a shared buffer for storing the cells which are to be routed and a mask mechanism with a mask register for altering the value of the bitmap before it is used for controlling the routing process. As a result of operation of the mask mechanism, a cell is either transported to an output port or discarded. Two switching systems are combined in first and second switch fabrics, each having a switch core and a set of switch core access layer (SCAL) elements. Each SCAL element respectively comprises a SCAL Receive element and a SCAL Xmit element for permitting access to input and output ports of one of the switching systems.