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:
Sep. 21, 2010
Filed:
May. 23, 2005
Masahiro Kato, Tokorozawa, JP;
Tsuyoshi Namiki, Tokorozawa, JP;
Takeshi Koda, Tokorozawa, JP;
Keiji Katata, Tokorozawa, JP;
Masami Oishi, Tokorozawa, JP;
Masahiro Kato, Tokorozawa, JP;
Tsuyoshi Namiki, Tokorozawa, JP;
Takeshi Koda, Tokorozawa, JP;
Keiji Katata, Tokorozawa, JP;
Masami Oishi, Tokorozawa, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
An information recording medium includes at least a disc-shaped first recording layer having a first recording track formed for recording record information and a disc-shaped second recording layer having a second recording track formed for recording the record information in the same recording direction as the first recording track of the first recording layer. A second place serving as a reference of a pre-format address for indicating the start position of the data area in the second recording track (position of a circle of address 30000in the radius direction in the L1 layer) is located at an outer side as compared to a first position serving as the pre-format address for indicating the start position of the data area in the first recording track (position of a circle of address 30000in the radius direction in the L0 layer) at least by a predetermined first offset amount.