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:
Aug. 14, 2001
Filed:
Apr. 07, 1998
Friedrich-Christian Tischer, Backnang, DE;
Ernst-Ulrich Scheuing, Allmersbach i.T., DE;
Ernst Kremers, Murrhardt, DE;
Roland Himmler, Aspach, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The method of controlling and/or monitoring an optical transmission of message signals over an optical line in a repeater station includes providing a device (,) for generating further optical secondary signals from the received optical secondary signals without generating a stable optical carrier signal for the secondary signals in the device (,). This device (,) includes a hybrid circuit (,) for splitting the received optical secondary signals to form a first branched optical signal portion and a second branched optical signal portion, an optical monitoring and/or control receiver (,) for generating control and/or monitoring signals (,) from the first branched optical signal portion and an optical modulating device (,) controllable by the control and/or monitoring signals. In this method of controlling and/or monitoring the further optical secondary signals are produced from the second branched optical signal portion in the optical modulating device (,) under control of the control and/or monitoring signals (,) while maintaining an optical carrier frequency of the further optical secondary signals equal to that of the optical secondary signals received and the further optical secondary signals are interleaved by time-division or code-division multiplexing.