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:
Aug. 21, 2012
Filed:
May. 01, 2009
Applicant:
Nobutsune Kobayashi, Kawasaki, JP;
Inventor:
Nobutsune Kobayashi, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/435 (2006.01); G11B 20/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A side determination apparatus of an optical disc includes a light source illuminating one side of the optical disc having a data side and a non-data side obliquely; a sensor receiving a reflected light from the optical disc illuminated by the light source; and a determination unit determining that an incident light into the sensor is a reflected diffracted light from the data side of the optical disc based on a distribution of an output of the sensor onto a surface of the disc to determine the one side.