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:
Jan. 12, 2016
Filed:
Jan. 22, 2013
Gwillerm Froc, Rennes, FR;
Gwillerm Froc, Rennes, FR;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
A method for determining a presence of a locking signal in a signal received by an optical receiver device, the optical receiver device configured to be used in an optical communications network, the locking signal being a signal exchanged by optical communication devices of the optical communications network in a phase preceding setting up communications between the optical communication devices. The presence of the locking signal is determined by obtaining a direct current component or a component at twice a frequency at which the locking signal is supposed to be modulated, and by obtaining a contribution of the communication signal, if any, on the component.