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. 16, 2002
Filed:
Jul. 01, 1998
Brian Gaudet, Bethlehem, PA (US);
Vickie Pagnon, Sunnyvale, CA (US);
Naveen Gopalakrishna, Santa Clara, CA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
A network switch divides incoming frame data into cells. Each of the cells include a source identification field. Depending upon bandwidth availability and upon cell priority, the cells are transmitted over a switch bus. The cells are then routed based upon the source identification field. The network switch determines bandwidth usage by monitoring the switch bus. Upon detection of a start-of-frame cell, the network switch increments a bandwidth counter. Upon detection of an end-of-frame cell, the network switch adds an entry to a decrement FIFO. After a switch bus latency period, the network switch removes the entry from the decrement FIFO and decrements the bandwidth counter.