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. 23, 2006
Filed:
Apr. 05, 2001
Ian David Johnson, Littlehampton, GB;
Marek Stephen Piekarski, Macclesfield, GB;
Ian David Johnson, Littlehampton, GB;
Marek Stephen Piekarski, Macclesfield, GB;
Xyratex Technology Limited, Hampshire, GB;
Abstract
There is disclosed a masking unit (REQMSK) for use in a data packet switching system. The data switching system being of the type having a memoryless cross-back switch (SM) providing cyclic connections under the control of a switch arbiter (SCARB) between ingress routers (IR, IR, IRand IR) and egress routers (ER, ER, ERand ER). Each of the ingress routers (IR–IR) is provided with incoming packet buffering on a virtual output queue basis (VOQ, VOQ, VOQ, and VOQfor ingress router IR). Each virtual output queue also produces a connection request signal REQto REQwhen the corresponding queue has a data packet in it. The masking unit REQMSK is arranged to randomly mask out correlated connection requests.