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:
Jul. 08, 1980
Filed:
Aug. 29, 1978
Giovanni Tamburelli, Turin, IT;
Abstract
To translate a train of binary electrical pulses into a multilevel luminous signal transmissible at a lower frequency, groups of two or more electrical pulses are temporarily stored in a shift register and then concurrently read out to a set of 2.sup.n -1 amplifiers feeding as many light emitters where n is the number of pulses per group. The connections between the shift-register stages and the amplifiers are so arranged that the collective intensity of the several light emitters assumes one of 2.sup.n possible levels according to the binary value of the pulse group stored in the register. The light sources jointly illuminate an optical fiber, with deviation of some of their rays to electro-optical feedback circuits for controlling the gain of the amplifiers to stabilize their output currents.