Digital rights management

• US 20050005142A1
• Filed: 10/22/2002
• Published: 01/06/2005
• Est. Priority Date: 11/16/2001
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Fontijn, Wilhelmus Fransiscus Johannes
• Application Number:
  US10/495,285
• Publication Number:
  US 20050005142A1
• Time in Patent Office: Days
• US Class Current: 713/193
• 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 20/00369 wherein a first key, which is usually stored on a hidden channel, e.g. in the lead-in of a BD-R, unlocks a key locker containing a second
• 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 20/00876 wherein physical copy protection means are attached to the medium, e.g. holograms, sensors, or additional semiconductor circuitry

Abstract

There is disclosed a data carrier (20) having content (22) stored thereon. Access to the content (22) while on the data carrier (20) is controlled by a “copy limited” and “play never” right. This combination of rights allows the carrier (20) to be used, for example, as a jukebox loader. The content cannot be played from the carrier (20), but it can be copied to a jukebox (30) for playing in the jukebox (30). This can be used to provide a dedicated, reusable or throw-away jukebox loader disk that allows a provider to maintain control over the content (22), while allowing the end user sufficient freedom to use the content (22). The data carrier (20) may be embodied in a disk compatible with the CD2 format. A corresponding method of distributing content (22) is also disclosed.

Claims

1. A data carrier (20) having content (22) stored thereon, in which access to the content (22) while on the data carrier (20) is controlled by a “

copy limited” and

“

play never”

right.

2. A data carrier (20) according to claim 1 in which the “

copy limited”

right is a “

copy once”

right.

3. A data carrier (20) according to claim 1 in which amendable data stored on it can be amended by a reader (30) of the data carrier (20).

4. A data carrier (20) according to claim 3 in which the amendable data can be amended upon copying of the data as a record of the fact that the copy has been made.

5. A data carrier (20) according to claim 3 in which the amendable data is separate from the content (22).

6. A data carrier (20) according to claim 1 in which the content (22) is recorded in a manner so that it cannot be amended.

7. A data carrier (20) according to claim 1 that is compatible with a CD2 disk reader.

8. A data carrier (20) according to claim 7 in which authorization to copy the content (22) is removed by overwriting the content (22) of a keylocker (24) on the data carrier (20).

9. A data carrier (20) according to claim 1 in which a programmable, reprogrammable or erasable transponder (26) is embedded in or attached to the data carrier (20).

10. A data carrier (20) according to claim 1 in which upon copying of the content (22), part or all of the content (22) itself may be removed from the data carrier (20) or rendered unusable.

11. A data carrier (20) according to claim 1 in which the content (22) cannot be copied until authorization to copy the content (22) is obtained through a network (36).

12. A method of distributing content (22) comprising recording the content (22) on a data carrier (20) and transferring the content (22) to a store (34) of a playback apparatus (30), in which the content (22) on the data carrier (20) has a “

copy limited” and

“

play never”

right, and which can be assigned one of a “

play limited” and

a “

play unlimited”

right.

13. A method according to claim 12 comprising a step of making a change to the data carrier (20) in a manner that can subsequently be detected after the content (22) has been copied.

14. A method according to claim 13 in which the change is made only after the content (22) has been successfully copied.

15. A jukebox system comprising a storage medium for storing rights data and content, and arranged to transfer content and rights on a data carrier to the storage medium, characterized in that the system is arranged to assign the transferred content one of a “

play limited” and

a “

play unlimited”

right in the rights stored on the data carrier, comprise a “

copy limited” and

a “

play never”

right.