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:
Apr. 10, 2012
Filed:
Aug. 12, 2009
Teruto Hirota, Moriguchi, JP;
Kenji Tagawa, Katano, JP;
Hideki Matsushima, Studio City, CA (US);
Tomokazu Ishikawa, Toyonaka, JP;
Shinji Inoue, Neyagawa, JP;
Masayuki Kozuka, Arcadia, CA (US);
Teruto Hirota, Moriguchi, JP;
Kenji Tagawa, Katano, JP;
Hideki Matsushima, Studio City, CA (US);
Tomokazu Ishikawa, Toyonaka, JP;
Shinji Inoue, Neyagawa, JP;
Masayuki Kozuka, Arcadia, CA (US);
Panasonic Corporation, Osaka, JP;
Abstract
An audio stream is divided into a plurality of audio object (AOB) files that are recorded having each been encrypted using a different encryption key. At least one piece of track management information (TKI) is provided corresponding to each track. Playlist information (PLI) assigns a playback position in a playback order to each track when a plurality of tracks are to be played back one after the other.