Patents by Inventor Reinhard Johannsen

Reinhard Johannsen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Transparent fiber-optic communication network
    Patent number: 6768870
    Abstract: In a transparent fiber-optic communication network with several central systems that are interconnected by optical fibers, to which systems at least one decentralized system is connected via two optical feed fibers, at least one first and at least one second optical fiber are connected to the decentralized optical system by a first and a second optical feed fiber in an optically transparent manner through a monitoring equipment of the central system.
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: July 27, 2004
    Assignee: Siemens Aktiengesellschaft
    Inventors: Reinhard Johannsen, Stefan Asch, Hubert Jaeger
  • Method for monitoring the operation of optical fibers
    Patent number: 6731872
    Abstract: A central equipment is connected by at least two optical fibers to a decentralized optical equipment and the central equipment creates an optical auxiliary signal which is transmitted together with an optical payload signal from the central equipment to the decentralized equipment. The optical auxiliary signal that is received in the decentralized optical equipment is rerouted and transmitted back to the central optical equipment via another optical fiber in addition to a second payload signal, and the reception of the optical auxiliary signal is optically monitored in the central optical equipment to determine if there is a breakage in either one of the fibers extending to the unit.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: May 4, 2004
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hubert Jaeger, Gerhard Stortz, Detlef Stoll, Reinhard Johannsen, Wilhelm-Martin Plotz