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:
Dec. 06, 2016
Filed:
Oct. 04, 2012
Applicant:
Sony Corporation, Tokyo, JP;
Inventors:
Motoi Kimura, Kanagawa, JP;
Tsutomu Kurihara, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/00 (2006.01); H04N 5/74 (2006.01); G02B 27/48 (2006.01); H04N 9/31 (2006.01); H01S 5/065 (2006.01); G09G 3/02 (2006.01); H01S 5/042 (2006.01); H01S 5/40 (2006.01); H01S 5/062 (2006.01);
U.S. Cl.
CPC ...
H04N 5/74 (2013.01); G02B 27/48 (2013.01); H01S 5/0652 (2013.01); H04N 9/3129 (2013.01); G09G 3/02 (2013.01); G09G 2320/0233 (2013.01); H01S 5/0427 (2013.01); H01S 5/06213 (2013.01); H01S 5/06216 (2013.01); H01S 5/4093 (2013.01); H01S 2301/02 (2013.01);
Abstract
A laser driving circuit, a laser driving method, and a device using laser light that can reduce speckle noise caused by laser light as coherent light are provided. In the laser driving circuit that generates laser driving current for driving a plurality of laser light sources emitting laser light of different wavelengths on the basis of an input video signal, a high-frequency signal of a frequency exceeding the band of the video signal is superimposed on the laser driving current generated on the basis of the input video signal, whereby speckle noise caused by the laser light as coherent light is reduced.