[Partial Translation Japanese ŁŁ English K01000331A1]
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Data Terminal Device
[Name of the Invention]
[Claim 1] A data terminal device that obtains encrypted contents data
from a recording medium containing the encrypted contents data and a
server information file that is necessary to obtain a license for
reproducing said encrypted contents data, and that obtains said license
from a distribution server in accordance with said server information
file, the data terminal device comprising:
a medium driving portion that obtains said encrypted contents
data and said server information file from said recording medium;
a control portion that determines a connection means for
connecting to said distribution server in accordance with the content of
the server information file obtained by said medium driving portion,
that connects to said distribution server with the determined
connection means to request distribution of said license, and that
receives said license from said distribution server;
a storage portion storing the encrypted contents data obtained
by said medium driving portion; and
a device portion storing the license that has been received from
said distribution server.
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Abstract
[Document Name]
[Abstract]
[Problem] To provide a data terminal device that, to obtain encrypted
contents data from a recording medium, obtains a license for
reproducing the encrypted contents data.
[Means to Solve the Problem] A personal computer copies encrypted
contents data, contents files 601 to 60n, and a server information file
from a CD–ROM to a hard disk 530, requests a distribution server to
distribute a license for the encrypted contents data in accordance with
an access means and an address of an access target included in the
server information file, and receives a license. Then, the received
license is stored in a license area 5215B of a memory of an internal
license administration device 520.
[Selected Drawing] Fig. 18
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[Partial Translation Japanese ŁŁ English K01000341A1]
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Data Terminal Device
[Name of the Invention]
[Claim 1] A data terminal device that obtains encrypted contents data,
made of contents data that have been encrypted, and a license for
obtaining original plain data by decrypting said encrypted contents
data, and that outputs said encrypted contents data and said license to
another data terminal device, the data terminal device comprising:
a module portion that obtains said encrypted contents data and
said license by software;
a storage portion that stores said encrypted contents data, a
license administration file, and an encrypted secret file; and
a device portion that decrypts said encrypted secret file, and
stores in a special area a binding license including a binding key that
encrypts the decrypted secret file;
wherein the secret file comprises secret information having said
license as a structural element; and
wherein said
file comprises an
administration number of said secret information that corresponds to
said encrypted contents file and that is included in said secret file.
license administration
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Abstract
[Document Name]
[Abstract]
[Problem] To provide a data terminal device that can move, to another
data terminal device, encrypted contents data and a license that have
been distributed by software.
[Means to Solve the Problem] A hard disk 530 of a personal computer
has a contents list file 150 and an encrypted secret file 160. A license
administration device 520 stores a binding key Kb in a license area
5215B of a memory. The encrypted secret file 160 can be decrypted
and encrypted with the binding key Kb that is stored by the license
administration device 520. A license for encrypted contents data that
has been obtained is stored as secret information in the encrypted
secret file 160.
[Selected Drawing] Fig. 25
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[Partial Translation Japanese ŁŁ English K01000351A1]
Data Terminal Device
[Name of the Invention]
[Claim 1] A data terminal device that obtains encrypted contents data,
made of contents data that have been encrypted, and a license for
obtaining original plain data by decrypting said encrypted contents
data, and that administrates said encrypted contents data and said
license, the data terminal device comprising:
a device portion for obtaining said encrypted contents data and
said license at a first security level, and for administrating said license
at said first security level;
a module portion for obtaining said encrypted contents data and
said license at a second security level that is lower than said first
security level, and for generating an exclusive license made by
subjecting said
for
administration at said second security level;
a storage portion for storing data; and
a control portion;
wherein said device portion comprises a storage portion storing
license to an encryption that
is suitable
said license in association with an administration number;
wherein said storage portion comprises
a plurality of encrypted contents data;
a plurality of first administration files comprising an
administration number that corresponds to a license administrated by
said device portion;
a plurality of second administration files comprising said
exclusive license; and
a contents list indicating the relation between said first
and second administration files and said encrypted contents data; and
wherein said control portion, if a license has been obtained at
said first and second security level, generates said first and second
administration
first and second
administration files and said obtained encrypted contents data into said
storage portion, and passes a license obtained at said first security level
to said device portion.
the generated
files, writes
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Abstract
[Document Name]
[Abstract]
[Problem] To provide a data terminal device that can administrate
encrypted contents data of different security levels in accordance with
the security level.
[Means to Solve the Problem] A contents list file 150 includes contents
files 1531 to 1535 and license administration files 1521 to 1525. The
contents files 1531 to 1535 record file names of encrypted contents data
{Dc}Kc and supplementary information Dc–inf that have been received
at different security levels. Moreover, the license administration files
1521 to 1525 are recorded in correspondence to the respective contents
files 1531 to 1535, and administrate the licenses that have been
received at the different security levels.
[Selected Drawing] Fig. 31
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[Partial Translation Japanese ŁŁ English K01000361A1]
Data Terminal Device
[Name of the Invention]
[Claim 1] A data terminal device that obtains unencrypted contents
data, and that generates encrypted contents data, made of said
contents data that have been encrypted, and a local license for
decrypting and reproducing said encrypted contents data, the data
terminal device comprising:
an encrypted contents generation means for generating said
local license based on duplicability information included in said
contents data, and generating said encrypted contents data by
encrypting said contents data with a license key that is included in the
generated local license;
an encryption process means for generating an encrypted local
license made by subjecting the generated local license to a unique
encryption;
a storage means for storing said encrypted local license and the
encrypted contents data; and
a control portion;
wherein said control portion passes said obtained contents data
to said encryption contents generation means, and passes said local
license to said encryption process means.
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Abstract
[Document Name]
[Abstract]
[Problem] To provide a data terminal device that can rip contents data
in accordance with a usage regularity of the contents data.
[Means to Solve the Problem] A watermark detection means 5400
detects a watermark from music data, and a watermark decision means
5401 decides whether there is a regularity in the usage regulations of
the detected watermark.1 Then, a license generation means 5403
generates a license in accordance with the usage regularity of the
watermark. A remarking means 5402 replaces the watermark with one
in which the duplication condition of the music data has been modified
in accordance with the usage regularity of the watermark. A music
encoder 5404 encodes the music data from the remarking means 5402
in a predetermined format. An encryption means 5405 encrypts the
music data from the music encoder 5404 with a license key generated
by the license generation means 5403.
[Selected Drawing] Fig. 33
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Translation note
1 Use of "regularity" and "usage regulations" in the original is ambiguous.
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