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. 30, 1995
Filed:
Jul. 30, 1992
Applicant:
Inventors:
Christopher Baldwin, Arlington, MA (US);
John Iannarone, Tewksbury, MA (US);
Assignee:
Digital Equipment Corporation, Maynard, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L / ; G06F / ;
U.S. Cl.
CPC ...
395325 ; 395200 ; 34082505 ; 370 855 ; 36424294 ; 36424296 ; 3642844 ; 3642419 ; 364238 ; 3642418 ; 364D / ;
Abstract
A concentrator which is used alone or in conjunction with one or more identical concentrators provides a set of externally configurable datapaths for connecting other devices connected to a backplane with primary and/or secondary rings in a token ring network. The concentrator includes a controller, a plurality of multiplexers and several front panel and backplane ports, each of which is configurable as an A, B, M or S port. The concentrator includes an internal token ring chain of one or more front panel ports for connecting other devices to the rings.