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:
Sep. 17, 1985
Filed:
Feb. 03, 1983
Steven Moustakas, Munich, DE;
Hans Witte, Munich, DE;
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
A device and method for reducing level dynamics in an optical star bus transmission system is disclosed wherein variable electrical resistors are connected in series to the electro-optical transmission elements of the system transmitters and are selectively adjusted so that differences in the signal power levels at a selected system receiver are reduced to zero, and hence the differences in the signal power levels at the remaining system receivers are substantially reduced. Furthermore, variable electrical resistors are connected in series to the gain controlling resistors of the amplifier stages of the receivers of the system so that when any specific transmitter couples power into the system, differences in the output levels of the amplifier stages of the receivers are also substantially reduced. The invention may be practiced with trimming potentiometers.