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. 28, 2007
Filed:
Jan. 30, 2004
Mikinori Matsuda, Kanagawa, JP;
Tokio Kanada, Kanagawa, JP;
Kazuhito Kurita, Kanagawa, JP;
Minoru Tobita, Tokyo, JP;
Akihiro Noda, Kanagawa, JP;
Yoshiro Arikawa, Tokyo, JP;
Shinichi Nakao, Kanagawa, JP;
Mikinori Matsuda, Kanagawa, JP;
Tokio Kanada, Kanagawa, JP;
Kazuhito Kurita, Kanagawa, JP;
Minoru Tobita, Tokyo, JP;
Akihiro Noda, Kanagawa, JP;
Yoshiro Arikawa, Tokyo, JP;
Shinichi Nakao, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A recording medium is provided wherein type determination and writing possibility determination is enabled for various types of disks. Opening and closing structure functions to open and close a detection hole of a cartridge. The structure forms a plane substantially horizontal level with a reference plane of the cartridge at a position of a detection hole when the detection hole is in a closed state. The cartridge has at least a first detection hole and a second detection hole formed therein. The second detection hole (H) is opened and closed by the opening and closing structure, and the first detection hole (H) is in an open state at all times.