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:
Nov. 20, 2007
Filed:
Sep. 16, 2004
Applicant:
Tomoshi Tokunaga, Zama, JP;
Inventor:
Tomoshi Tokunaga, Zama, JP;
Assignee:
Victor Company of Japan, Limited, Yokohama, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 17/03 (2006.01); G11B 17/04 (2006.01); G11B 33/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A disc drive apparatus includes a tray member, on which a bare disc, or a cartridge accommodating a disc therein is placed, and a disc drive device, into or from which the tray member is loaded or ejected by a drive unit. A medium detection system includes detection holes provided on the tray member to detect a disc or a cartridge. In addition, provided on the disc drive device is a detection unit to optically detect a state including a type of a disc or a cartridge placed on the tray member based on whether the detection holes are shaded in the course of loading of the tray member.