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:
Oct. 22, 2024
Filed:
Jun. 07, 2021
Sumitomo Electric Device Innovations, Inc., Yokohama, JP;
Shinta Kasai, Yokohama, JP;
Sumitomo Electric Device Innovations, Inc., Yokohama, JP;
Abstract
An optical transmitter includes: a controller that generates a multi-level amplitude modulated signal based on transmission data that is binary data; a driver that generates a drive signal in accordance with the multi-level amplitude modulated signal; and a light emitter that generates an optical signal in accordance with the drive signal. The controller selects one of a first encoding method and a second encoding method in accordance with a switching signal. The controller generates the multi-level amplitude modulated signal by converting a bit string of M (M is an integer of 2 or more) bits included in the transmission data into a pulse signal having 2logic levels using a selected encoding method. The controller sets voltage values of the 2logic levels depending on the selected encoding method.