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:
Oct. 23, 1984
Filed:
Aug. 10, 1982
Gregoire Eumurian, Paris, FR;
Robert Gadrault, Paris, FR;
Thomson-CSF, Paris, FR;
Abstract
An optical receiver designed for operation in alternating-current transmission over a broad temperature range and having a very large dynamic range comprises a capacitor between the transimpedance circuit and two comparator circuits for processing a signal which is coded at three levels. The amplifier can be of a type having a wide band but excluding the direct-current component. A threshold-generating circuit permits automatic connection of the thresholds to one of a plurality of discrete values which are predetermined as a function of the variation in amplitude of the signal. The optical link transmitter delivers the coded information in accordance with a code having a constant direct-current component such as a PBP code, for example.