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US 7,406,177 B2Granted
Recording medium, recording method, recording apparatus, and reproduction method
AssigneeSony Corporation
InventorsYoichiro Sako, Shunsuke Furukawa, Tatsuya Inokuchi
Life of this patent
Estimating the term…
Abstract
A recording medium, comprising a lead-in area, a data recording area that is formed on an outer periphery side of the lead-in area and in which a plurality of pieces of content data is recorded, and a lead-out area formed on an outer periphery side of the data recording area, wherein first copyright management information and second copyright management information with which copyrights of the plurality of pieces of content data are managed are recorded at different positions whose secrecies are different from each other.
Claims47
A recording medium, comprising:
- a lead-in area;
- a data recording area that is formed on an outer periphery side of the lead-in area and in which a plurality of pieces of content data is recorded;
- and
- a lead-out area formed on an outer periphery side of the data recording area,
- wherein first copyright management information and second copyright management information with which copyrights of the plurality of pieces of content data are managed are recorded at different positions whose secrecies are different from each other,
- any one of first copyright management information and second copyright management information is recorded in any one of said lead-in area and said lead-out area, the other copyright management information being recorded in the data recording area, a position of said data recording area providing lower secrecy than any one of said lead-in area and said lead-out area, and
- the first copyright management information and the second copyright management information are not related to encryption of the content data.
4 more elements
A recording method, comprising the steps of:
- recording a plurality of pieces of content data to a recording medium;
- and
- recording first copyright management information and second copyright management information with which copyrights of the plurality of pieces of content data are managed at different positions of the recording medium, secrecies of the different positions being different from each other, wherein
- one of the first copyright management information and the second copyright management information is recorded in at least any one of a lead-in area that is formed on an inner periphery side of a recording area in which the plurality of pieces of content data are recorded and a lead-out area that is formed on an outer periphery side of the recording area,
- the other copyright management information is recorded in the recording area, a position of said data recording area providing lower secrecy than any one of said lead-in area and said lead-out area, and
- the first copyright management information and the second copyright management information are not related to encryption of the content data.
3 more elements
A recording medium recording apparatus, comprising:
- a head portion for recording data to a recording medium;
- an encode processing portion for performing an encoding process for data to be recorded and supplying the encoded data to the head portion;
- and
- a controlling portion for recording a plurality of pieces of content data to the recording medium and controlling the head portion so that it records first copyright management information and second copyright management information with which copyrights of the plurality of pieces of content data are managed to different positions of the recording medium, the secrecies of the different positions being different from each other, wherein
- the controlling portion is configured to perform a control so that one of the first copyright management information and the second copyright management information is recorded in at least any one of a lead-in area that is formed on an inner periphery side of a data recording area in which the plurality of pieces of content data are recorded and a lead-out area that is formed on an outer periphery side of the recording area,
- the controlling portion is configured to perform a control so that the other copyright management information is recorded in the recording area, a position of said data recording area providing lower secrecy than any one of said lead-in area and said lead-out area, and
- the first copyright management information and the second copyright management information are not related to encryption of the content data.
4 more elements
A recording medium reproducing method, comprising the steps of:
- reading any one of first copyright management information and second copyright management information from a recording medium comprising a lead-in area, a data recording area that is formed on an outer periphery side of the lead-in area and in which a plurality of pieces of content data is recorded, and a lead-out area formed on an outer periphery side of the data recording area, wherein the first copyright management information and the second copyright management information with which copyrights of the plurality of pieces of content data are managed are recorded at different positions whose secrecies are different from each other;
- and
- controlling at least a reproducing operation for content data that is read from the data recording area corresponding to the copyright management information that has been read, wherein
- any one of the first copyright management information and the second copyright management information is recorded in any one of the lead-in area and the lead-out area, the other copyright management information being recorded in the data recording area, a position of said data recording area providing lower secrecy than any one of said lead-in area and said lead-out area, and
- the first copyright management information and the second copyright management information are not related to encryption of the content data.
2 more elements
Dependencies are inferred from the claim text.