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:
Jan. 04, 2000
Filed:
Mar. 04, 1998
Applicant:
Inventor:
Toyoki Taguchi, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369116 ;
Abstract
A laser light control circuit with low power consumption and a small amount of heat generation by superposing a control current output from a light quantity control circuit with a high-frequency current output from a high frequency current generator on the basis of the control current, includes a bias circuit which sets a bias current of the high-frequency current in response to the operation voltage of a semiconductor laser element.