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:
Jun. 16, 2009
Filed:
Jul. 12, 2004
Applicants:
Munetake Ebihara, Kanagawa, JP;
Takamichi Hayashi, Tokyo, JP;
Mitsuru Katsumata, Tokyo, JP;
Hiroyuki Ichikawa, Tokyo, JP;
Inventors:
Munetake Ebihara, Kanagawa, JP;
Takamichi Hayashi, Tokyo, JP;
Mitsuru Katsumata, Tokyo, JP;
Hiroyuki Ichikawa, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06F 7/04 (2006.01); G11B 19/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a CD-DA, encoded content in which audio information is encoded using a content key, the content key, and two usage right files are recorded in predetermined regions. The usage right files are a CD-DA usage right file having CD-DA usage rights, and a CD-R usage right file having CD-R usage rights. The usage rights recorded in the CD-DA usage right file regulate the usage on a CD-DA.