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. 18, 2015
Filed:
Dec. 07, 2012
Sharp Kabushiki Kaisha, Osaka-shi, Osaka, JP;
Hideharu Tajima, Osaka, JP;
Atsushi Etoh, Osaka, JP;
Go Mori, Osaka, JP;
Masaki Yamamoto, Osaka, JP;
Tetsuya Hayashi, Osaka, JP;
Toshihiko Sakai, Osaka, JP;
Hirohisa Yamada, Osaka, JP;
Takayuki Naka, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
The reliability of a super-resolution optical information recording medium whose capacity can be increased is increased. On an optical information recording medium () according to the present invention, a content is recorded as a pit group formed such that an average length Tm [nm] of a minimum mark length and a minimum space length becomes shorter than an optical system resolution limit, and reading speed information designating a reading speed in a range from 2×(4.92×Tm/149) [m/s] to less than (10000/60)×2×π×(24/1000) [m/s] is recorded as a reading speed for reproducing the content.