STATUTORY LICENSE RESTRICTED DIGITAL MEDIA PLAYBACK ON PORTABLE DEVICES

• US 20170206341A1
• Filed: 12/27/2016
• Published: 07/20/2017
• Est. Priority Date: 08/23/2004
• Status: Active Grant

• Current Assignee: Sony Interactive Entertainment LLC (Sony Group Corp.)
• Original Assignee: Sony Interactive Entertainment America LLC (Sony Group Corp.)
• Inventors: Navar, Murgesh, Yruski, Andrey, Puranik, Rajiv, Hsu, Michael
• Granted Patent: US 10,042,987 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• CPC Class Codes: G06F 21/6209 to a single file or object, e.g. in a secure envelope, encrypted and accessed using a key, or with access control rules appended to the object itself
• CPC Class Codes: H04B 1/3827 Portable transceivers
• CPC Class Codes: H04L 63/0457 wherein the sending and receiving network entities apply dynamic encryption, e.g. stream encryption cryptographic mechanisms or cryptographic arrangements for stream encryption H04L9/065
• CPC Class Codes: H04L 63/10 for controlling access to devices or network resources
• CPC Class Codes: H04L 63/107 wherein the security policies are location-dependent, e.g. entities privileges depend on current location or allowing specific operations only from locally connected terminals
• CPC Class Codes: H04L 65/1059 End-user terminal functionalities specially adapted for real-time communication
• CPC Class Codes: H04L 67/06 specially adapted for file transfer, e.g. file transfer protocol [FTP]
• CPC Class Codes: H04L 9/0894 Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage

Abstract

Systems and methods are described for, e.g., providing a statutory audio content service on a portable device that complies with the provisions of the Digital Millennium Copyright Act (DMCA). The user can select a playlist subject to DMCA restrictions but cannot access individual items. Content playback, including skipping of content, is restricted to enforce relevant DMCA provisions. Encryption used to implement digital rights management (DRM) may be modified to enforce such content play rules or, alternatively, an additional layer of encryption may be imposed. Limitations on playback are stored along with the playlist structure in a form that is protected against modification. Information logging content playback is maintained in protected form to be uploaded and relayed to the service provider for the purpose of calculating royalty payments.

Claims

1. (canceled)

2. A method for controlling playback of digital content on a portable electronic device, the method comprising:

determining a geographic location of the portable electronic device;

retrieving a list of encrypted digital content at the portable electronic device, the encrypted digital content comprising a first content type encrypted using a first encryption scheme and a second content type encrypted using a second encryption scheme; and

permitting playback of the encrypted digital content based on the geographic location of the portable electronic device, wherein permitting playback of the encrypted digital content comprises;

decrypting the first content type using a first key; and

decrypting the second content type using a second key, and wherein the first key and the second key are stored in an access-controlled memory structure.

3. The method of claim 2, wherein permitting playback of the encrypted digital content further comprises:

receiving selection of a playlist; and

decrypting the playlist using a key table stored in a Read Only Memory (ROM) of the portable electronic device.

4. The method of claim 2, wherein permitting playback of the encrypted digital content further comprises authenticating a log information file that comprises data describing one or more user interactions or playback events associated with the portable electronic device.

5. The method of claim 2, wherein permitting playback of the encrypted digital content further comprises:

identifying one or more play rules associated with the encrypted digital content; and

permitting playback of decrypted digital content until it is determined that at least one play rule has been violated.

6. The method of claim 5, wherein the one or more play rules comprises a statutory license restriction.

7. The method of claim 5, further comprising storing the one or more play rules in an encrypted playlist file on the portable electronic device.

8. The method of claim 7, further comprising updating the encrypted playlist file via a content service provider to facilitate content rights management.

9. A portable electronic device comprising:

one or more processors; and

a memory storing instructions executable by the one or more processors, are configured to cause the processors to perform operations comprising;

determining a geographic location of the portable electronic device;

retrieving a list of encrypted digital content at the portable electronic device, the encrypted digital content comprising a first content type encrypted using a first encryption scheme and a second content type encrypted using a second encryption scheme; and

permitting playback of the encrypted digital content based on the geographic location of the portable electronic device, wherein permitting playback of the encrypted digital content comprises;

decrypting the first content type using a first key; and

decrypting the second content type using a second key, and wherein the first key and the second key are stored in an access-controlled memory structure.

10. The portable electronic device of claim 9, further comprising an interface that receives selection of a playlist, and wherein the processors execute further instructions to decrypt the playlist using a key table stored in a Read Only Memory (ROM) responsive to the playlist selection.

11. The portable electronic device of claim 9, wherein the processors execute instructions to permit playback of the encrypted digital content by authenticating a log information file, wherein the log information file comprises information describing one or more associated user interactions or playback events.

12. The portable electronic device of claim 9, wherein the processors execute instructions to permit playback of the encrypted digital content by:

identifying one or more play rules associated with the encrypted digital content; and

permitting playback of decrypted digital content until it is determined that at least one play rule has been violated.

13. The portable electronic device of claim 12, wherein the one or more play rules comprises one or more statutory license restrictions.

14. The portable electronic device of claim 12, wherein the memory further stores the one or more play rules in an encrypted playlist file.

15. The portable electronic device of claim 14, wherein the processors execute instructions to update the encrypted playlist file via a content service provider to facilitate content rights management.

16. A non-transitory computer-readable storage medium having embodied thereon a program executable by a processor to perform a method for permitting playback of digital content, the method comprising:

determining a geographic location of a portable electronic device;

retrieving a list of encrypted digital content at the portable electronic device, the encrypted digital content comprising a first content type encrypted using a first encryption scheme and a second content type encrypted using a second encryption scheme; and

permitting playback of the encrypted digital content based on the geographic location of the portable electronic device, wherein permitting playback of the encrypted digital content comprises;

decrypting the first content type using a first key; and

decrypting the second content type using a second key, and wherein the first key and the second key are stored in an access-controlled memory structure.

17. The non-transitory computer-readable storage medium of claim 16, wherein permitting playback of the encrypted digital content further comprises:

receiving selection of a playlist; and

decrypting the playlist using a key table stored in a Read Only Memory (ROM) of the portable electronic device.

18. The non-transitory computer-readable storage medium of claim 16, wherein permitting playback of the encrypted digital content further comprises authenticating a log information file, the log information file comprising data describing one or more user interactions or playback events associated with the portable electronic device.

19. The non-transitory computer-readable storage medium of claim 16, wherein permitting playback of the encrypted digital content further comprises:

identifying one or more play rules associated with the encrypted digital content; and

permitting playback of decrypted digital content until it is determined that at least one play rule has been violated.

20. The non-transitory computer-readable storage medium of claim 19, wherein the one or more play rules comprises a statutory license restriction.

21. The non-transitory computer-readable storage medium of claim 19, wherein the one or more play rules are stored in an encrypted playlist file on the portable electronic device.