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. 28, 2024
Filed:
Jun. 17, 2019
Sony Semiconductor Solutions Corporation, Kanagawa, JP;
Mitsushi Tabata, Kanagawa, JP;
Takashi Masuda, Kanagawa, JP;
Takeshi Yuwaki, Kanagawa, JP;
Toshiyuki Kitazawa, Kanagawa, JP;
SONY SEMICONDUCTOR SOLUTIONS CORPORATION, Kanagawa, JP;
Abstract
A laser drive circuit is provided which includes: a first drive current unit () configured to adjust, by a first MOSFET (MN) and a second MOSFET (MN) being connected in series, an inflow of a current to a light-emitting element (LD) that emits light in accordance with a current amount when the light-emitting element emits light and when the light-emitting element is extinguished; a voltage drop unit (MN) configured to cause a gate-source voltage of the first MOSFET to drop when the light-emitting element is extinguished; and a timing generating unit () configured to generate a signal for controlling driving of the first drive current unit and the voltage drop unit.