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:
May. 14, 2013
Filed:
Jun. 11, 2010
Go Mori, Osaka, JP;
Hirohisa Yamada, Osaka, JP;
Masaki Yamamoto, Osaka, JP;
Yasuhiro Harada, Osaka, JP;
Hideharu Tajima, Osaka, JP;
Shigemi Maeda, Osaka, JP;
Yoshiteru Murakami, Osaka, JP;
Go Mori, Osaka, JP;
Hirohisa Yamada, Osaka, JP;
Masaki Yamamoto, Osaka, JP;
Yasuhiro Harada, Osaka, JP;
Hideharu Tajima, Osaka, JP;
Shigemi Maeda, Osaka, JP;
Yoshiteru Murakami, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka-shi, JP;
Abstract
This invention allows super-resolution reproduction with which a better bER value is attainable, when information is recorded by a random pattern including a mark length not longer than a resolution limit, by use of a highly versatile signal decoding method. Information is recorded as marks and spaces coded by RLL(1,7) modulation, which each of the marks and spaces have one of a plurality of lengths, and 2T marks and 2T spaces of the marks and spaces being formed are shorter than 0.12 μm. An information recording layer () includes a reproduction film () and a reflective film () which are provided in this order from a side from which reproducing light is incident, which reproduction film is made of (i) zinc oxide, (ii) strontium titanate, (iii) titanium oxide, (iv) cerium oxide, or (v) a material including at least one of the (i) through (iv), and which reflective film is made of tantalum or titanium.