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. 19, 2026
Filed:
Jun. 30, 2021
Nec Corporation, Tokyo, JP;
Atsushi Kozato, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
A wavelength-tunable optical transmission unit repeatedly transmits a first channel setting optical signal while changing a transmission channel until a wavelength-tunable optical reception unit receives a second channel setting optical signal in response to a first instruction signal. When the wavelength-tunable optical reception unit receives the second channel setting optical signal, a channel indicated by second channel information is set as a channel of an optical signal to be received by the wavelength-tunable optical reception unit. When a second instruction signal is received after the first instruction signal is received, a channel of an optical signal to be transmitted by the wavelength-tunable optical transmission unit is set to a first designated channel, and a channel of an optical signal to be received by the wavelength-tunable optical reception unit is set to a second designated channel.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile