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:
Dec. 30, 1986
Filed:
Dec. 12, 1983
Gregoire Eumurian, Argenteuil, FR;
Thomson CSF, Paris, FR;
Abstract
A device for controlling a light-emitting diode. The light-emitting diode is reverse-biased in order to be put out of service without light emission, a reverse current of predetermined value being passed through the diode in order to produce a dissipation of electric power equivalent to the value dissipated in the light-emitting mode, thus maintaining the temperature of the junction. This quiescent state can be achieved by means of a switching assembly and the emissive state can be produced by a current source. When mounted on an optical bus, this arrangement makes it possible to maintain the signal-to-noise ratio by reason of the fact that only one diode emits each time while the other diodes remain in the quiescent state.