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, 1989
Filed:
Oct. 14, 1987
Brian R Larson, Inver Grove Heights, MN (US);
Donald B Bennett, Burnsville, MN (US);
Steven A Murphy, Coon Rapids, MN (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
A Layered Network system may provide varying cost from order NlogN low-cost networds, to completely-routing, fully-Layered networks with cots of order Nlog .sup.3 N. Layered networks are composed of switches and point-to-point connections between them. These networks establish connections from requestors to responders by relaying 'requests' through the switches. Each switch has built-in control logic to route requests and responses. The switch setting is determined using the comparison of the request with the request's current location in the network, and with locally competing requests. To provide distributed routing without a centralized controller, each switch routes the requests using only the information contained in the requests that switch handles. The switch setting is remembered in order to route the responses on the same paths as the associated requests, but in the reverse direction.