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:
Nov. 12, 1991
Filed:
Aug. 03, 1989
Ning Zhang, Dublin, CA (US);
Pacific Bell, San Francisco, CA (US);
Abstract
An improved packet routing network is disclosed in which inbound packets do not have to arrive synchronously. The network includes collision avoidance circuitry and an m stage switching network where the number of input lines to the network is 2.sup.m. Each stage in the first (m-1) stages further comprises one or more line reducing circuits. Each line reducing circuit transfers each data packet input on an input line thereof to one of a plurality of output lines thereof. The number of line reducing input lines is greater than the number of line reducing output lines. The transfer is accomplished in a manner guaranteeing that no two data packets are output on the same line reducing output line.