Cryptography – Video cryptography – Copy protection or prevention
Reexamination Certificate
2011-01-18
2011-01-18
Vu, Kimyen (Department: 2435)
Cryptography
Video cryptography
Copy protection or prevention
C380S203000, C713S193000
Reexamination Certificate
active
07873162
ABSTRACT:
A recording method including searching for at least one of a plurality of free areas on a storage medium, said storage medium including a file that is stored according to a file system; generating a track descriptor; generating a part descriptor; recording data encrypted with an encryption key in at least one free area; connecting the free area where the encrypted data is recorded to an end of the file managed by the file system; recording in the part descriptor the part pointer information that points to the free area where the encrypted data is recorded; recording in the track descriptor a decryption key so as to enable later decryption of the encrypted data, and pointer information that points to the part descriptor; and recording a track number that points to the track descriptor in a play order table having a play order of a plurality of tracks.
REFERENCES:
patent: 5883957 (1999-03-01), Moline et al.
patent: 5940352 (1999-08-01), Moriguchi
patent: 6047398 (2000-04-01), Okayama et al.
patent: 6052780 (2000-04-01), Glover
patent: 6061314 (2000-05-01), Arai
patent: 6526010 (2003-02-01), Morioka et al.
patent: 6920565 (2005-07-01), Isaacson et al.
patent: 6965550 (2005-11-01), Nakao et al.
patent: 7027384 (2006-04-01), Ohbi et al.
patent: 7111114 (2006-09-01), Hattori et al.
patent: 7159090 (2007-01-01), Ohbi et al.
patent: 7203147 (2007-04-01), Kawakami et al.
patent: 7277374 (2007-10-01), Nakao et al.
patent: 7301856 (2007-11-01), Kii et al.
patent: 7325093 (2008-01-01), Ohbi et al.
patent: 2001/0018743 (2001-08-01), Morishita
patent: 2002/0016919 (2002-02-01), Sims, III
patent: 2002/0181358 (2002-12-01), Sako
patent: 2003/0105717 (2003-06-01), Kim et al.
patent: 2003/0147632 (2003-08-01), Chan et al.
patent: 2003/0185124 (2003-10-01), Hattori et al.
patent: 2003/0185393 (2003-10-01), Kii et al.
patent: 2003/0188094 (2003-10-01), Ohbi et al.
patent: 2003/0227705 (2003-12-01), Hattori et al.
patent: 2004/0130975 (2004-07-01), Kii et al.
patent: 2007/0086284 (2007-04-01), Kawakami et al.
patent: 0 655 740 (1995-05-01), None
patent: WO 03/028029 (2003-04-01), None
Derwent Abstract, Accession No. 2002-344655, JP 2002-2008310, Jan. 11, 2002.
Hattori Masato
Kawakami Takashi
Kii Manabu
Ohbi Seiji
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Sony Corporation
To Baotran N
Vu Kimyen
LandOfFree
Reproducing method, reproducing apparatus, recording method,... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reproducing method, reproducing apparatus, recording method,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reproducing method, reproducing apparatus, recording method,... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2701077