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:
Nov. 27, 2007
Filed:
Mar. 31, 2003
Manabu Kii, Tokyo, JP;
Seiji Ohbi, Tokyo, JP;
Takashi Kawakami, Tokyo, JP;
Masato Hattori, Kanagawa, JP;
Manabu Kii, Tokyo, JP;
Seiji Ohbi, Tokyo, JP;
Takashi Kawakami, Tokyo, JP;
Masato Hattori, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
Decrypting information corresponding to a selected track, file pointer information, and index information are read out from a track information table having the decrypting information corresponding to each track, the file pointer information showing one of a plurality of files with headers, and the index information showing a position in the file. The header of the file with the header is read out on the basis of the file pointer information and position information in the file corresponding to the index information is detected from the header. A part of data of the file is read out on the basis of the position information and the read-out data is decrypted on the basis of the decrypting information.