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:
Dec. 31, 1996
Filed:
May. 23, 1995
Joseph B Lyles, Mountain View, CA (US);
Alan G Bell, Palo Alto, CA (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A crossbar switching fabric for routing data packets in an ATM switch. A logic unit associated with a reservation ring in an ATM switch intercepts data exiting a selected evaluator of the reservation ring, and processes this data to set-up a crossbar switching fabric for routing data packets of the ATM switch. The set-up data may be passed to the crossbar switching fabric upon each clock cycle thereby not incurring any pipeline processing delays. Alternatively, the set-up data is accumulated and stored in the logic unit until the completion of an arbitration session, whereafter it is sent to the crossbar. In place of the logic unit a plurality of registers may be added to each of the evaluators of the reservation ring. The registers in turn interconnected to each other in a shift register arrangement to provide the set-up data to the crossbar fabric.