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:
Jan. 08, 2002
Filed:
Dec. 31, 1997
Evan Lee Goldstein, Princeton, NJ (US);
Lih-Yuan Lin, Middletown, NJ (US);
Adel Abdel Moneim Saleh, Holmdel, NJ (US);
Jane Marie Simmons, Eatontown, NJ (US);
At&T Corp., New York, NY (US);
Abstract
A non-blocking crossconnect apparatus includes a primary bi-directional crossconnect device and a plurality of secondary bi-directional crossconnect devices. The primary crossconnect device has a plurality of pairs of bi-directional signal ports. A first one of each of the plurality of pairs of the bi-directional signal ports are arranged in a first set and a corresponding second one of each of the plurality of pairs of the bi-directional signal ports are arranged in a second set. Each secondary crossconnect device is associated with a respective one of the plurality of pairs of bi-directional signal ports and has a pair of secondary bi-directional signal ports and a pair of bi-directional signal leads. A first one of each pair of the bi-directional signal leads is operably connected to a respective one of the bi-directional signal ports in the first set and a second one of each pair of the bi-directional signal leads is operably connected to a respective one of the bi-directional signal ports in the second set. By utilizing symmetry and the bi-directional nature of communication lines, the present invention yields a rearrangeably non-blocking crossconnect apparatus as well as a strictly non-blocking crossconnect apparatus.