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:
Jul. 09, 1996
Filed:
Sep. 15, 1994
Steven M DeFoster, Rochester, MN (US);
Horst L Truestedt, Pine Island, MN (US);
Raymond J Thatcher, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A communications method and an optical fiber ring communications system including multiple devices or ports are provided. The optical fiber ring communications system includes first and second optical link modules (OLMs) coupled to each of the multiple ports. First and second optical fibers extend between adjacent ports in the ring communications system and are coupled at each end to one of the first and second OLMs. The first and second optical fibers define dual fiber channel arbitrated loops during normal operation in the system. If an optical fiber link is disconnected between two ports, then the communications system is configured as a single arbitrated loop. Alternatively, when the communications system includes a ruler port and subject ports, then the communications system can be configured as two separate loops coupled by the ruler port if an optical fiber link is disconnected between two ports. The ring communications system supports a large number of ports and the circumference of the ring can equal hundreds of kilometers.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile