Data recording medium, data recording apparatus, data recording method, data reproduction method and data transmission apparatus
First Claim
1. A data recording medium on which digital data is recorded, that data recording medium comprising a plurality of pieces of identification information, that relate individually to digital data used for a plurality of different applications, recorded in advance thereon.
2 Assignments
0 Petitions
Accused Products
Abstract
A data recording medium on which digital data is recorded eliminates acquisition by a user of a plurality of data recording media for different applications to improve the convenience is provided. Digital data for a plurality of different applications and UIDs as identification information added for the individual applications are recorded on the same data recording medium. For example, a music CD on which data for promotion and data for a normal version are managed with different UIDs from each other is distributed as a CD for promotion. The data for promotion allow free reproduction thereof. If a user tries the music CD and wants to purchase the data for a normal version, then the user would access a server owned or managed by a record company of a distributor of the music CD to perform a charging procedure. This validates the UID with which the data for a normal version is managed, and after the UID is authenticated by the server, reproduction of the full data is permitted.
14 Citations
36 Claims
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1. A data recording medium on which digital data is recorded,
that data recording medium comprising a plurality of pieces of identification information, that relate individually to digital data used for a plurality of different applications, recorded in advance thereon.
- 13. A data recording apparatus for recording digital data on a data recording medium, wherein the data recording apparatus records, upon manufacture of a data recording medium, a plurality of pieces of identification information individually relating to digital data to be used for a plurality of different applications on the data recording medium.
- 22. A data recording method for recording digital data on a data recording medium, comprising recording, upon manufacture of a data recording medium, a plurality of pieces of identification information individually relating to digital data to be used for a plurality of different applications on the data recording medium.
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29. A data reproduction method for reproducing a recording medium on which digital data to be used for a first application and first identification information relating to the digital data as well as digital data to be used for a second application and second identification information relating to the digital data for the second application are recorded, the data reproduction method comprising:
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discriminating whether or not identification information is recorded on the recording medium;
discriminating whether the recorded identification information is the first identification information or the second identification information when the identification information is recorded on the recording medium; and
reproducing the digital data relating to the first identification information when it is discriminated that the recorded identification information is the first identification information, but decrypting the digital data relating to the second identification information based on data relating to a key for decryption of the digital data acquired from outside and reproducing the decrypted digital data when it is discriminated that the recorded identification information is the second identification information.
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30. A data transmission apparatus, comprising:
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a terminal section for reproducing a recording medium on which digital data to be used for a first application and first identification information relating to the digital data as well as digital data to be used for a second application and second identification information relating to the digital data for the second application is recorded; and
a server section connected to said terminal section through a communication line for managing the recording medium;
the server section being operable to discriminate, when the first identification information is received from said terminal section, the received first identification information and permit, when it is discriminated that the first identification information is identification information managed by said server section, a procedure for decoding the digital data relating to the second identification information. - View Dependent Claims (31, 32, 33, 34, 35, 36)
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Specification