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:
Jul. 20, 2021
Filed:
Mar. 17, 2020
Hisense Laser Display Co., Ltd., Qingdao, CN;
HISENSE LASER DISPLAY CO., LTD., Qingdao, CN;
Abstract
A laser projection device includes: a laser light source, including three laser assemblies emitting lasers of different colors; a laser light source driving unit, including: a display control circuit; three power supply driving assemblies connected to the three laser assemblies; and three laser driving assemblies connected to three power supply driving assemblies, where the display control circuit is configured to transmit an enabling signal corresponding to each laser assembly to a corresponding power supply driving assembly when transmitting a PWM signal corresponding to the each laser assembly; each power supply driving assembly is configured to load a driving voltage to a corresponding laser driving assembly according to voltage of a received PWM signal, when a received enabling signal is at active potential; and each laser driving assembly is configured to drive a corresponding laser assembly to emit light according to the driving voltage.