Information security – Prevention of unauthorized use of data including prevention... – Access control
Reexamination Certificate
2001-11-02
2008-11-04
Laforgia, Christian (Department: 2139)
Information security
Prevention of unauthorized use of data including prevention...
Access control
C726S026000, C726S030000, C713S189000, C713S193000, C369S047120, C369S084000, C369S275300
Reexamination Certificate
active
07448086
ABSTRACT:
Data areas AR1and AR2, lead-in areas LIN1and LIN2, and lead-out areas LOUT1and LOUT2are provided on a disc. For example, in case of encrypting and recording data into the data area AR2, copyright management information R2and key information K2are recorded into the lead-out area LOUT2. Only information in a Q channel of a subcode is recorded in the lead-out area and this area is filled with dummy data. A position of the lead-out is obtained from TOC information. The fact that a light spot has entered the lead-out area can be judged from the information in the Q channel. The copyright management information and key information are recorded by using the lead-out area. The lead-out area is not rewritten or accessed by an ordinary CD player, so that the copyright management information and the key information can be safely held.
REFERENCES:
patent: 5666238 (1997-09-01), Igari et al.
patent: 5926453 (1999-07-01), Muramatsu et al.
patent: 6108296 (2000-08-01), Kajiyama et al.
patent: 6178057 (2001-01-01), Kuroda et al.
patent: 6289102 (2001-09-01), Ueda et al.
patent: 6577811 (2003-06-01), Kikuchi et al.
patent: 6584552 (2003-06-01), Kuno et al.
patent: 6615192 (2003-09-01), Tagawa et al.
patent: 6707784 (2004-03-01), Sako et al.
patent: 6772284 (2004-08-01), Ikeda
patent: 6938162 (2005-08-01), Nagai et al.
patent: 6973015 (2005-12-01), Murakami et al.
patent: 0 851 418 (1998-07-01), None
patent: 0 933 776 (1999-08-01), None
patent: 0 989 553 (2000-03-01), None
patent: 1 001 419 (2000-05-01), None
patent: 0 899 733 (2001-03-01), None
patent: 60-119670 (1985-06-01), None
patent: 7-169187 (1995-07-01), None
patent: 9-128301 (1997-05-01), None
patent: 10-106147 (1998-04-01), None
patent: 11-328867 (1999-11-01), None
patent: WO 95 12200 (1995-05-01), None
Furukawa Shunsuke
Inokuchi Tatsuya
Kihara Takashi
Sako Yoichiro
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Laforgia Christian
Shaw Yin-Chen
Sony Corporation
LandOfFree
Recording apparatus and method, reproducing apparatus and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Recording apparatus and method, reproducing apparatus and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recording apparatus and method, reproducing apparatus and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4035448