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:
Dec. 08, 2009
Filed:
Sep. 01, 2004
Tsutomu Ichinose, Tochigi, JP;
Yoichiro Sako, Tokyo, JP;
Tsutomu Ichinose, Tochigi, JP;
Yoichiro Sako, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
An apparatus for recording additional information hard to analyze in an information recording medium, a reproducer, a recording medium, a method, and a computer program for the same are provided. Bit values set at a plurality of DC control bit information setting positions set in a recording frame are decided based on constituent bit information of additional data, and additional data such as key information used for decoding contents is recorded in the information recording medium. In the reproducer, the additional data constituent bit information can be acquired by detecting the bit position set at a selected DC control bit storage position in the additional data-associated recording frame. With the configuration, it is possible to embed additional information such as key information used for decoding contents, key production information, contents reproduction control information, and copying control information with a format hard to analyze and also to accurately read out for data reproduction.