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:
May. 24, 1994
Filed:
Jun. 08, 1992
Nathalie Pascual, Prades le Lez, FR;
Christophe Fleury, Fontenilles, FR;
Georges Sagnes, Saint Gely du Fesc, FR;
Christian N'Guyen, Blagnac, FR;
Jacques Lassale, Montpellier, FR;
Aerospatiale Societe Nationale Industrielle, Paris, FR;
Abstract
Device for synchronizing two constant high frequency digital pulse sequences S and R.sub.f comprising a first oscillator producing the frequency sequence R.sub.f at the fundamental frequency f and a second oscillator producing the frequency sequence of pulses S also at the frequency f. The second oscillator is a ring oscillator having three loops of inverted logic gates connected in series and corresponding respectively to the frequency f (used if synchronism exists), to a higher frequency f.sub.1 (used if there is a phase lag) and a lower frequency f.sub.2 (used if there is a phase lead) with the choice of the operating loop being made by a multiplexer on the basis of instructions from a phase detector permanently comparing the synchronism, lead or lag state of the sequence S compared with the sequence R.sub.f.