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:
Jul. 29, 2014
Filed:
May. 29, 2013
Pioneer Corporation, Kanagawa, JP;
Memory-tech Holding Inc., Tokyo, JP;
Pioneer Digital Design and Manufacturing Corporation, Kanagawa, JP;
Takuya Shiroto, Kanagawa, JP;
Masayoshi Yoshida, Kanagawa, JP;
Hideki Kobayashi, Kanagawa, JP;
Masakazu Ogasawara, Kanagawa, JP;
Takao Tagiri, Kanagawa, JP;
Makoto Suzuki, Ibaraki, JP;
Pioneer Corporation, Kanagawa, JP;
Memory-Tech Holdings Inc., Tokyo, JP;
Pioneer Digital Design and Manufacturing Corporation, Kanagawa, JP;
Abstract
A recording medium is provided with: a guide layer on which a guide track or guide tracks are formed; and recording layers, wherein (i) an information mark group and (ii) a distinctive mark group are formed in the guide layer, the information mark group being formed on each of a plurality of guide tracks, the distinctive mark group distinguishing a center track out of the plurality of guide tracks on each of which the information mark group is formed, the distinctive mark group including a pair of distinctive record marks which are shifted toward a right side and a left side, respectively, from a track center of the center track, a width of each distinctive record mark is twice or more a width of the guide track.