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.:

US 7468941 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 23, 2008

Filed:

Aug. 03, 2005
Applicants:

Akiyoshi Uchida, Kawasaki, JP;

Toshikazu Kanaoka, Kawasaki, JP;

Inventors:

Akiyoshi Uchida, Kawasaki, JP;

Toshikazu Kanaoka, Kawasaki, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A recording and reproducing apparatus according to the present invention includes a light source for emitting a light beam, a spatial modulating part for modulating the light beam to create information light, using spatial information associated with page data A to be recorded on a holographic recording medium, an optical-path changing part for changing an optical path of the information light created by the spatial modulating part, a light detecting part for receiving the information light having the optical path changed by the optical-path changing part, and a diagnosis part for inspecting operations of recording and reproducing components including the spatial modulating part and the light detecting part, using the page data A and page data B obtained from the information light received by the light detecting part.


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Uchida, Akiyoshi. (2008). Recording and reproducing apparatus (U.S. Patent No. 7468941). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7468941

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