Recording medium, recording apparatus and reproducing apparatus

• US 20040190389A1
• Filed: 03/22/2004
• Published: 09/30/2004
• Est. Priority Date: 03/24/2003
• Status: Abandoned Application

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Nakano, Toshihisa, Futa, Yuichi, Ohmori, Motoji, Harada, Shunji
• Application Number:
  US10/805,387
• Publication Number:
  US 20040190389A1
• Time in Patent Office: Days
• US Class Current: 369/30.03
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/00115 wherein the record carrier stores a unique medium identifier
• CPC Class Codes: G11B 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• CPC Class Codes: G11B 20/00224 wherein the key is obtained from a remote server
• CPC Class Codes: G11B 20/00246 wherein the key is obtained from a local device, e.g. device key initially stored by the player or by the recorder
• CPC Class Codes: G11B 20/00304 the key being stored in the lead-in area [LIA]
• CPC Class Codes: G11B 20/00528 wherein each title is encrypted with a separate encryption key for each title, e.g. title key for movie, song or data file
• CPC Class Codes: G11B 20/00768 wherein copy control information is used, e.g. for indicating whether a content may be copied freely, no more, once, or never, by setting CGMS, SCMS, or CCI flags
• CPC Class Codes: G11B 20/00855 involving a step of exchanging information with a remote server
• CPC Class Codes: G11B 2020/1288 Formatting by padding empty spaces with dummy data, e.g. writing zeroes or random data when de-icing optical discs
• CPC Class Codes: G11B 2220/216 Rewritable discs
• CPC Class Codes: G11B 2220/2541 Blu-ray discs; Blue laser DVR discs
• CPC Class Codes: G11B 2220/2562 DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
• CPC Class Codes: G11B 2220/2575 DVD-RAMs
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/11 by using information not detectable on the record carrier
• CPC Class Codes: G11B 27/329 on a disc [VTOC]
• CPC Class Codes: G11B 27/34 Indicating arrangements indicating means incorporated in magazine or cassette G11B23/046 and G11B23/0875; indicating measured values in general G01D
• CPC Class Codes: G11B 7/0037 with discs

Abstract

A DVD-RMA4 on which contents, digital copyrighted works, wherein one or more first contents and a first list information (music list) showing a list of said one or more first contents (for example, CPRM and CPS2) are recorded by a first recording method, one or more second contents and a second list information (music list) showing a list of said one or more second contents are recorded by a second recording method (for example, non-CP), and a common list information (master music list) showing a list of contents including the contents indicated in the first list information and the contents indicated in the second list information are recorded.

Claims

1. A recording medium on which contents are recorded, the contents being digital copyrighted works,

wherein on the recording medium, one or more first contents and first list information indicating a list of said one or more contents are recorded by a first recording method;

one or more second contents and second list information indicating a list of said one or more second contents are recorded by a second recording method; and

common list information indicating a list of contents including the contents indicated in the first list information and the contents indicated in the second list information are recorded.

2. The recording medium according to claim 1,

wherein the first recording method records contents after encrypting the contents to protect copyrights of the contents, and

the second recording method records contents without encrypting the contents.

3. The recording medium according to claim 1,

wherein the first recording method and the second recording method record contents after encrypting the contents to protect copyrights of the contents, and

the first recording method and the second recording method differ in methods for the encryption.

4. The recording medium according to claim 3,

wherein the first recording method records, onto the recording medium, the encrypted contents associated with secret information stored in a non-rewritable area of the recording medium, and the second recording method records, onto the recording medium, the encrypted contents associated with secret information stored in a non-rewritable area of the recording medium, and

types of the secret information are different for the first recording method and the second recording method, the secret information being stored in the non-rewritable area of the recording medium.

5. The recording medium according to claim 4,

wherein by the first recording method, key revocation data and identification information are stored in the non-rewritable area of the recording medium as the secret information, the key revocation data being used to revoke a secret key held by an apparatus which reproduces the recording medium and the identification information being used to identify the recording medium, and

by the second recording method, only the identification information for identifying the recording medium is stored in the non-rewritable area of the recording medium as the secret information.

6. The recording medium according to claim 1,

wherein the common list information further includes information for specifying the recording methods for the contents.

7. The recording medium according to claim 6,

wherein the first list information and the second list information further include other information relating to said one or more contents respectively, and

the common list information includes all the information included respectively in the first list information and the second list information.

8. The recording medium according to claim 1,

wherein at least one of the first recording method and the second recording method uses key revocation data for revoking a secret key held by an apparatus which reproduces the recording medium, and

the common list information includes information for specifying the key revocation data.

9. The recording medium according to claim 8,

wherein at least one of the first recording method and the second recording method further uses a revocation list which is a list of information indicating a public key certificate to be revoked held by an apparatus which reproduces the recording medium, and

the common list information further includes information for specifying a website on the Internet on which the revocation list is stored.

10. The recording medium according to claim 1 which is a rewritable DVD.

11. The recording medium according to claim 1,

wherein the contents are music data, and the first list information, the second list information and the common list information are music lists.

12. A recording apparatus which records contents that are digital copyrighted works onto a recording medium, comprising:

a first recording unit operable to record one or more first contents and first list information indicating a list of said one or more first contents onto the recording medium by a first recording method;

a second recording unit operable to record one or more second contents and second list information indicating a list of said one or more second contents onto the recording medium by a second recording method; and

a third recording unit operable to generate common list information indicating a list of contents including the first contents indicated in the first list information and the second contents indicated in the second list information, and record the common list information onto the recording medium.

13. The recording apparatus according to claim 12,

wherein the third recording unit generates the common list information including information for specifying the recording methods for the contents.

14. The recording apparatus according to claim 12,

wherein the third recording unit generates the common list information including information for specifying key revocation data for revoking a secret key held by an apparatus which reproduces the recording medium.

15. The recording apparatus according to claim 14,

wherein the third recording unit generates the common list further including information for specifying a website on the Internet on which a revocation list is stored, the revocation list being a list of information indicating a public key certificate to be revoked held by an apparatus which reproduces the recording medium.

16. A reproducing apparatus which reads out a content from a recording medium on which contents that are digital copyrighted works are recorded and reproduces the content,

wherein on the recording medium, one or more first contents and first list information indicating a list of said one or more contents are recorded by a first recording method;

one or more second contents and second list information indicating a list of said one or more second contents are recorded by a second recording method; and

common list information indicating a list of contents including the contents indicated in the first list information and the contents indicated in the second list information are recorded, and

the reproducing apparatus comprises;

a reading out unit operable to read out the common list information recorded on the recording medium;

a display unit operable to display the list of contents indicated in the read-out common list information;

an instruction obtaining unit operable to obtain a selection instruction by a user for making a selection from the displayed list of the contents; and

a reproducing unit operable to read out a content corresponding to the obtained selection instruction and reproduce the content.

17. The reproducing apparatus according to claim 16,

wherein the common list information further includes information for specifying a recording method for the content, and

the reproducing unit specifies the recording method for the content corresponding to the selection instruction with reference to the common list information, reads out the content from the recording medium by a method corresponding to the specified recording method, and reproduces the content.

18. The reproducing apparatus according to claim 16,

wherein at least one of the first recording method and the second recording method uses key revocation data for revoking a secret key held by an apparatus which reproduces the recording medium,

the common list information further includes information for specifying the key revocation data, and

the reproducing unit refers to key revocation data indicated by said information included in the common list information.

19. The reproducing apparatus according to claim 18,

wherein at least one of the first recording method and the second recording method further uses a revocation list, the revocation list being a list of information indicating a public key certificate to be revoked held in an apparatus which reproduces the recording medium,

the common list information further includes information for specifying a website on the Internet on which the revocation list is stored, and

the reproducing unit further includes a revocation list obtaining unit operable to obtain the revocation list from the website via the Internet based on the information for specifying the website.

20. The reproducing apparatus according to claim 16,

wherein the common list information further includes information for specifying a recording method for the content,

the reading out unit previously holds reproduction availability information indicating an availability of a content reproduction for each method in the reproducing unit, and executes a reproduction availability identification process for identifying whether or not the content is allowed to be reproduced by comparing the common list information with the reproduction availability information, and

the display unit displays whether or not the content is allowed to be reproduced in a distinguishable manner according to the reproduction availability identification process.

21. A content recording reproduction system comprising a recording medium, the recording apparatus and the reproducing apparatus,

wherein the recording apparatus comprises a first recording unit operable to record one or more first contents and first list information indicating a list of said one or more first contents onto the recording medium by a first recording method;

a second recording unit operable to record one or more second contents and second list information indicating a list of said one or more second contents onto the recording medium by a second recording method; and

a third recording unit operable to generate common list information indicating a list of contents including the first contents indicated in the first list information and the second contents indicated in the second list information, and record the common list information onto the recording medium, and

the reproducing apparatus comprises;

a reading out unit operable to read out the common list information recorded on the recording medium;

a display unit operable to display the list of contents indicated in the read-out common list information;

an instruction obtaining unit operable to obtain a selection instruction by a user for making a selection from the displayed list of the contents; and

a reproducing unit operable to read out a content corresponding to the obtained selection instruction and reproduce the content.

22. A recording method for recording contents that are digital copyrighted works onto a recording medium, including:

a first recording step of recording one or more contents and first list information indicating a list of said one or more contents onto the recording medium by a first recording method;

a second recording step of recording one or more contents and second list information indicating a list of said one or more contents onto the recording medium by a second recording method; and

a third recording step of generating common list information indicating a list of contents including the contents indicated in the first list information and the contents indicated in the second list information.

23. A reproduction method by which a content is read out from a recording medium on which contents that are digital copyrighted works are recorded and reproduced,

wherein on the recording medium, one or more first contents and first list information indicating a list of said one or more contents are recorded by a first recording method;

one or more second contents and second list information indicating a list of said one or more second contents are recorded by a second recording method; and

common list information indicating a list of contents including the contents indicated in the first list information and the contents indicated in the second list information are recorded, and

the reproduction method includes;

a reading out step of reading out the common list information recorded on the recording medium;

a displaying step of displaying the list of contents indicated in the read-out common list information;

an instruction obtaining step of obtaining a selection instruction by a user for making a selection from the displayed list of the contents; and

a reproducing step of reading out a content corresponding to the obtained selection instruction from the recording medium and reproducing the content.

24. A program for a recording apparatus to record contents that are digital copyrighted works onto a recording medium, and the program causing a computer to function as units of a recording apparatus, the recording apparatus comprising:

a first recording unit operable to record one or more first contents and first list information indicating a list of said one or more first contents onto the recording medium by a first recording method;

a second recording unit operable to record one or more second contents and second list information indicating a list of said one or more second contents onto the recording medium by a second recording method; and

a third recording unit operable to generate common list information indicating a list of contents including the first contents indicated in the first list information and the second contents indicated in the second list information, and record the common list information onto the recording medium.

25. A program for a reproducing apparatus which reads out a content from a recording medium on which contents that are digital copyrighted works are recorded and reproduces the content,

wherein on the recording medium, one or more first contents and first list information indicating a list of said one or more contents are recorded by a first recording method;

one or more second contents and second list information indicating a list of said one or more second contents are recorded by a second recording method; and

common list information indicating a list of contents including the contents indicated in the first list information and the contents indicated in the second list information are recorded, and

the program causing a computer to function as units of the reproducing apparatus,

wherein the reproducing apparatus comprises;

a reading out unit operable to read out the common list information recorded on the recording medium;

a display unit operable to display the list of contents indicated in the read-out common list information;

an instruction obtaining unit operable to obtain a selection instruction by a user for making a selection from the displayed list of the contents; and

a reproducing unit operable to read out a content corresponding to the obtained selection instruction and reproduce the content.