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. 13, 1992
Filed:
Feb. 06, 1992
Applicant:
Inventors:
Shigeru Yoda, Mishima, JP;
Kazuo Tsuboi, Takatsuki, JP;
Assignee:
Omron Tateisi Electronics Co., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369110 ; 369 4424 ;
Abstract
An optical data storage accessing apparatus which includes a first light projecting unit including a laser diode for projecting data recording light onto a data storage medium, a second light projecting unit for projecting data recording light onto the data storage medium, and a light receiving unit. The light receiving unit receives the data reading light after it is reflected by the data storage medium to read data recorded on the data storage medium. An optical unit joins the data recording light and the data reading light and separates data reading light reflected from the data storage medium from the data recording light.