Information processing device, information recording medium, information processing method, and computer program

• US 20070050849A1
• Filed: 08/24/2006
• Published: 03/01/2007
• Est. Priority Date: 08/26/2005
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Takashima, Yoshikazu
• Granted Patent: US 8,046,837 B2
• Time in Patent Office: Days
• US Class Current: 726/26
• 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 21/80 in storage media based on magnetic or optical technology, e.g. disks with sectors preventing unauthorised reproduction or copying of disc-type recordable media G11B20/00
• CPC Class Codes: G06F 2221/2129 Authenticate client device independently of the user
• 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 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• 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 20/00362 the key being obtained from a media key block [MKB]
• 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 20/18 Error detection or correction; Testing , e.g. of drop-outs
• CPC Class Codes: G11B 27/11 by using information not detectable on the record carrier

Abstract

An information processing device, for executing content reproduction processing from an information recording medium, includes a security information processing unit for determining output messages based on security check information in a content reproduction sequence, and outputting a message output command accompanied by selection information of the output message to a user interface processing unit, and a user information processing unit for obtaining message information based on the selection information input from said security information processing unit and outputting to a display unit.

Claims

1. An information processing device for executing content reproduction processing from an information recording medium, comprising:

a security information processing unit for determining output messages based on security check information in a content reproduction sequence, and outputting a message output command accompanied by selection information of the output message to a user interface processing unit; and

a user interface processing unit for obtaining message information based on the selection information input from said security information processing unit, and outputting to a display unit.

2. The information processing device according to claim 1, wherein said security information processing unit is of a configuration for executing processing for determination of output message contents based on security check information, and determination processing of output message language based on content reproduction player information, and executing outputting message selection information for making selection following this determination information to said user interface processing unit.

3. The information processing device according to claim 1, wherein said user interface processing unit is of a configuration for executing processing for receiving user input corresponding to displayed message on said display unit, and outputting the received user input information to said security information processing unit.

4. The information processing device according to claim 1, wherein said user interface processing unit is configured as an onscreen display (OSD) function executing unit;

and wherein said security information processing unit is of a configuration for executing message output commands accompanied by selection information of the output message, based on an OSD call-up (OSD_CALL).

5. The information processing device according to claim 1, wherein said security information processing unit is configured as a virtual machine for obtaining a command code recorded in an information recording medium and executing data processing according to the command code.

6. An information processing device for executing content reproduction processing from an information recording medium, comprising:

a security information processing unit for executing processing for obtaining error code corresponding to security check information in a content reproduction sequence, and writing said error code to a register or memory; and

an application executing unit for obtaining the error code from said register or memory, obtaining message information corresponding to the obtained error code, and outputting the obtained message on a display unit.

7. The information processing device according to claim 6, wherein said application executing unit is of a configuration for executing processing for receiving user input corresponding to the display message on said display unit, and writing the received user input information to a register or memory;

and wherein said security information processing unit is of a configuration for executing processing for obtaining the user input information written to said register or memory.

8. The information processing device according to claim 6, wherein said security information processing unit has a configuration for outputting an execution application switchover command to said application executing unit;

and wherein, based on said application switchover command, said application executing unit executes switchover to an application which executes data transfer processing with said security information processing unit via register or memory, and performs message output to said display unit.

9. The information processing device according to claim 6, wherein said security information processing unit and said application executing unit write status values indicating processing status to said register or memory, and wherein said security information processing unit and said application executing unit are of a configuration to execute reading of a status value indicating processing status written to said register or memory, and perform confirmation of the processing status.

10. The information processing device according to claim 6, wherein said security information processing unit and said application executing unit are of a configuration for executing mutual reliability confirmation processing by data transfer processing applying said register or memory,.

11. The information processing device according to claim 6, wherein said security information processing unit is configured as a virtual machine which obtains command code recorded in an information recording medium and executes data processing following the command code.

12. An information processing device comprising:

an application executing unit for executing applications stored in an information recording medium; and

a security information processing unit for executing processing for writing, to a register or memory, a parameter necessary for execution or continuation of an application at said application executing unit;

wherein said application executing unit is of a configuration for obtaining a parameter from said register or memory which said security information processing unit has written, and executing data processing necessary for execution or continuation of the application by computation processing or encryption processing applying said parameter, thereby executing or continuing the application.

13. The information processing device according to claim 12, wherein said register or memory is a player status register and includes:

a first player status register wherein said security information processing unit writes and said application executing unit reads; and

a second player status register wherein said application executing unit writes and said security information processing unit -reads.

14. The information processing device according to claim 12, wherein said security information processing unit is of a configuration for executing sequential writing processing of different parameters to said register or memory;

and wherein said application executing unit is of a configuration for sequentially obtaining, from said register or memory, different parameters which said security information processing unit sequentially writes thereto, and executing computation processing or encryption processing applying sequentially different parameters, thereby executing or continuing the application.

15. The information processing device according to claim 12, wherein said application executing unit is of a configuration for executing generation processing of output data by executing computation processing or encryption processing applying parameters obtained from said register or memory.

16. The information processing device according to claim 12, wherein said application executing unit is of a configuration for executing generation processing of output data by exclusive-OR operation processing applying parameters obtained from said register or memory, or encryption processing using said parameters, or decryption processing with an encryption key generated by encryption processing applying said parameters.

17. An information recording medium storing, as recorded data, an application and content including code information executed by a virtual machine;

.

wherein said application is a program containing an execution routine for periodic referencing processing of a register or memory;

and wherein said code information is configured as information containing a command for executing processing for writing an error code obtained as a security check result to a register or memory.

18. An information processing method for executing content reproduction processing from an information recording medium, comprising the steps of:

security information processing, performed at a security information processing unit, for determining output messages based on security check information in a content reproduction sequence, and outputting a message output command accompanied by selection information of the output message to a user interface processing unit; and

user interface processing, performed at a user interface processing unit, for obtaining message information based on the selection information input from said security information processing unit, and outputting to a display unit.

19. The information processing method according to claim 18, wherein said security information processing executes processing for determination of output message contents based on security check information, and determination processing of an output message language based on content reproduction player information, and executes outputting message selection information for making selection following this determination information to said user interface processing unit.

20. The information processing method according to claim 18, further comprising a step for, at said user interface processing unit, receiving user input corresponding to displayed message on said display unit, and outputting the received user input information to said security information processing unit.

21. The information processing method according to claim 18, wherein said user interface processing unit is configured as an onscreen display (OSD) function executing unit;

and wherein said security information processing executes message output commands accompanied by selection information of the output message, based on an OSD call-up (OSD_CALL).

22. An information processing method for executing content reproduction processing from an information recording medium, comprising the steps of:

security information processing, performed at a security information processing unit, for executing processing for obtaining error code corresponding to security check information in a content reproduction sequence, and writing said error code to a register or memory; and

application executing, performed at an application executing unit, for obtaining the error code from said register or memory, obtaining message information corresponding to the obtained error code, and outputting the obtained message on a display unit.

23. The information processing method according to claim 22, further comprising the steps of:

executing processing, at said application executing unit, for receiving user input corresponding to the display message on said display unit, and writing the received user input information to a register or memory; and

executing processing, at said security information processing unit, for obtaining the user input information written to said register or memory.

24. The information processing method according to claim 22, further comprising the steps of:

outputting an execution application switchover command to said application executing unit, performed at said security information processing unit; and

executing switchover to an application which executes data transfer processing with said security information processing unit via register or memory, performed at said application executing unit, and performing message output to said display unit, based on said application switchover command.

25. The information processing method according to claim 22, further comprising the steps of:

writing status values indicating processing status to said register or memory, performed at said security information processing unit and said application executing unit; and

executing reading of a status value indicating processing status written to said register or memory, and performing confirmation of the processing status, performed at said security information processing unit and said application executing unit.

26. The information processing method according to claim 22, further comprising a step performed at said security information processing unit and said application executing unit, for executing mutual reliability confirmation processing by data transfer processing applying said register or memory.

27. An information processing method comprising the steps of:

application executing, performed at an application executing unit, for executing applications stored in an information recording medium;

parameter writing, performed at a security information processing unit, for executing processing for writing, to a register or memory, a parameter necessary for execution or continuation of an application at said application executing unit; and

obtaining a parameter from said register or memory which said security information processing unit has written, and executing data processing necessary for execution or continuation of the application by computation processing or encryption processing applying said parameter, performed at said application executing unit, thereby executing or continuing the application.

28. The information processing method according to claim 27, wherein said parameter writing is performed at said security information processing unit, for executing sequential writing processing of different parameters to said register or memory;

and wherein said application executing unit sequentially obtains, from said register or memory, different parameters which said security information processing unit sequentially writes thereto, and executes computation processing or encryption processing applying sequentially different parameters, thereby executing or continuing the application.

29. The information processing method according to claim 27, wherein said application executing unit executes generation processing of output data by executing computation processing or encryption processing applying parameters obtained from said register or memory.

30. The information processing method according to claim 27, wherein said application executing unit is of a configuration for executing generation processing of output data by exclusive-OR operation processing applying parameters obtained from said register or memory, or encryption processing using said parameters, or decryption processing with an encryption key generated by encryption processing applying said parameters.

31. A computer program for executing reproduction processing of content recorded in an information recording medium on an information processing device, said program comprising the steps of:

security information processing, performed at a security information processing unit, for determining output messages based on security check information in a content reproduction sequence, and outputting a message output command accompanied by selection information of the output message to a user interface processing unit; and

user interface processing, performed at a user interface processing unit, for obtaining message information based on the selection information input from said security information processing unit, and outputting to a display unit.

32. A computer program for executing reproduction processing of content recorded in an information recording medium on an information processing device, said program comprising the steps of:

security information processing, performed at a security information processing unit, for executing processing for obtaining error code corresponding to security check information in a content reproduction sequence, and writing said error code to a register or memory; and

application executing, performed at an application executing unit, for obtaining the error code from said register or memory, obtaining message information corresponding to the obtained error code, and outputting the obtained message on a display unit.

33. A computer program for executing reproduction processing of content recorded in an information recording medium on an information processing device, said program comprising the steps of:

application executing, performed at an application executing unit, for executing applications stored in an information recording medium;

parameter writing, performed at a security information processing unit, for executing processing for writing, to a register or memory, a parameter necessary for execution or continuation of an application at said application executing unit; and

obtaining a parameter from said register or memory which said security information processing unit has written, and executing data processing necessary for execution or continuation of the application by computation processing or encryption processing applying said parameter, performed at said application executing unit, thereby executing or continuing the application.