Information processing device, information recording medium manufacturing device, information recording medium, methods therefore, and computer program

• US 20070159648A1
• Filed: 09/13/2006
• Published: 07/12/2007
• Est. Priority Date: 09/13/2005
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Takashima, Yoshikazu
• Granted Patent: US 8,018,609 B2
• Time in Patent Office: Days
• US Class Current: 358/1.140
• 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

Abstract

An information processing device for executing content reproduction processing includes: a content reproduction processing unit for executing data transformation processing for replacing a part of configuration data of input content to be reproduced with transformation data, and executing processing for reproducing the reproduction content; and a parameter generating unit for providing the content reproduction processing unit with a parameter to be applied in the data transformation processing; wherein the content reproduction processing unit has a configuration for obtaining a parameter identifier that is different for each segment set as a sectioning region of reproduction content, and outputting a parameter calculation request accompanied by the parameter identifier to the parameter generating unit; and wherein the parameter generating unit has a configuration for providing the content reproducing unit with a parameter corresponding to a segment, in response to the parameter calculation request from the content reproducing unit.

Claims

1. An information processing device for executing content reproduction processing, comprising:

a content reproduction processing unit for executing data transformation processing for replacing a part of configuration data of input content to be reproduced with transformation data, and executing processing for reproducing the reproduction content; and

a parameter generating unit for providing said content reproduction processing unit with a parameter to be applied in said data transformation processing;

wherein said content reproduction processing unit has a configuration for obtaining a parameter identifier that is different for each segment set as a sectioning region of reproduction content, and outputting a parameter calculation request accompanied by said parameter identifier to said parameter generating unit;

and wherein said parameter generating unit has a configuration for providing said content reproducing unit with a parameter corresponding to a segment, in response to the parameter calculation request from said content reproducing unit.

2. The information processing device according to claim 1, wherein said content reproduction processing unit has a configuration for subjecting fix-up table data including said transformation data to execution of computation processing or encryption processing applying the parameter corresponding to the segment obtained from said parameter generating unit, and for executing restoration processing of data including the transformation data applied as replacement data as to the configuration data of said segment.

3. The information processing device according to claim 1, wherein said content reproduction processing unit has a configuration for executing processing for obtaining a packet number of a configuration packet of a segment included in a reproduction section, from an EP map included in clip information which is content reproduction section information;

and referencing a parameter identifier determining table correlating said parameter identifier with a packet number serving as content configuration data, and obtaining a parameter identifier corresponding to a packet number of a configuration packet of said segment.

4. The information processing device according to claim 3, wherein said parameter identifier determining table is a table wherein said parameter identifier and the packet number of a packet at the head position of a segment which is content configuration data are correlated.

5. The information processing device according to claim 3, wherein said packet number is a source packet number (SPN) corresponding to an I-picture included in an EP map.

6. The information processing device according to claim 1, wherein said content reproduction processing unit has a configuration for executing processing for obtaining an EP map registration table ID which is a registration table identifier of an EP map included in clip information which is content reproduction section information;

and referencing a parameter identifier determining table correlating said parameter identifier with the EP map registration table ID, to obtain a parameter identifier corresponding to the packet number of a configuration packet of said segment.

7. The information processing device according to claim 6, wherein said parameter identifier determining table is a table wherein said parameter identifier, and the EP map registration table ID which is a registration table identifier of an EP map including information of a packet at the head position of a segment which is content configuration data, are correlated.

8. The information processing device according to claim 1, wherein said content reproduction processing unit has a configuration for executing processing for obtaining an EP map registration table ID which is a registration table identifier of an EP map included in clip information which is content reproduction section information;

and calculating a parameter identifier corresponding to said segment, based on said EP map registration table ID.

9. The information processing device according to claim 8, wherein said content reproduction processing unit has a configuration for executing processing for calculating a parameter identifier corresponding to said segment based on said EP map registration table ID, following the following expression:

(SP_ID)=(EP map_ID)/N

wherein SP;

ID;

parameter identifier;

EP map_ID;

EP map registration table ID; and

N;

the number of EP map registration tables set corresponding to one segment.

10. The information processing device according to claim 1, wherein said content reproduction processing unit has a configuration for executing processing for counting the number of times of usage of an EP map registration table included in clip information which is content reproduction section information, and calculating a parameter identifier corresponding to said segment based on the count for said EP map registration table.

11. The information processing device according to claim 1, wherein said content reproduction processing unit has a configuration for executing processing for obtaining fix-up table data including said transformation data from packets contained in the content, executing computation processing or encryption processing applying a parameter corresponding to a segment obtained from said parameter generating unit, and executing restoration processing of data including transformation data applied as replacement data as to configuration data of said segment.

12. The information processing device according to claim 1, wherein said content reproduction processing unit has a configuration for executing processing for obtaining fix-up table data including said transformation data from a fix-up table data different and independent from the content, executing computation processing or encryption processing applying a parameter corresponding to a segment obtained from said parameter generating unit, and executing restoration processing of data including transformation data applied as replacement data as to configuration data of said segment.

13. The information processing device according to any one of the claims 1 through 12, wherein said parameter calculating unit has a configuration for being executed by a virtual machine set within the information processing device.

14. The information processing device according to any one of the claims 1 through 13, having a configuration for a parameter calculation request from said content reproduction processing unit to said parameter calculating unit being executed as an interruption request, and parameter provision from said parameter calculating unit to said content reproduction processing unit being executed as a response to said interruption request.

15. An information recording medium manufacturing device comprising:

a data processing unit for generating

content including broken data different from proper content configuration data, and

a fix-up table including a parameter identifier determining table storing

fix-up table body data stored by subjecting transformation data for replacement with said broken data to computation or encryption processing with a parameter set corresponding to a segment which is a sectioned region of content, and

a parameter identifier which is identification information of said parameter; and

a data recording unit for recording content including said broken data, and said fix-up table, in an information recording medium.

16. The information recording medium manufacturing device according to claim 15, wherein said parameter identifier determining table is a table wherein said parameter identifier and the packet number of a packet at the head position of a segment which is content configuration data are correlated.

17. The information recording medium manufacturing device according to claim 15, wherein said parameter identifier determining table is a table wherein said parameter identifier and an EP map registration table ID which is a registration table identifier of an EP map including information of a packet at the head position of a segment which is content configuration data are correlated.

18. An information recording medium having stored:

content of which a part of content configuration data is replaced and reproduced;

a fix-up table having corresponded and registered a parameter identifier set corresponding to a segment wherein the content configuration data is sectioned into multiple segments and set, and transformation data which is an object to be replaced by a part of the content configuration data to be replaced;

wherein the transformation data is data having performed computation or coding processing based on the parameter corresponding to the parameter identifier.

19. The information recording medium according to claim 18, comprising:

a presentation timestamp (PTS) of the entry point, and an EP map whereupon a packet number which is an address is correlated and registered; and

said segments are sectioned based on the multiple entry points registered to the EP map.

20. The information recording medium according to claim 19, wherein said segment is sectioned based on a fixed entry point.

21. A data configuration having stored:

content of which a part of content configuration data is replaced and reproduced;

a fix-up table having correlated and registered a parameter identifier set to correlate to a segment wherein the content configuration data is sectioned into multiple segments and set, and transformation data which is an object to be replaced by a part of the content configuration data to be replaced;

wherein the transformation data is data having performed computation or coding processing based on the parameter correlating to the parameter identifier.

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

content reproduction processing executed in a content reproduction processing unit for data transformation processing for rewriting a part of configuration data of input content to be reproduced, and processing for reproducing the reproduction content; and

parameter generating executed in a parameter generating unit, for providing said content reproduction processing unit with a parameter to be applied in said data transformation processing;

wherein said content reproduction processing has a step for obtaining a parameter identifier that is different for each segment set as a sectioning region of reproduction content and outputting a parameter calculation request accompanied by said parameter identifier to said parameter generating unit;

and wherein said parameter generating has a step for providing said content reproducing unit with a parameter corresponding to a segment, in response to the parameter calculation request from said content reproducing unit.

23. The information processing method according to claim 22, wherein said content reproduction processing has a step for subjecting fix-up table data including said transformation data to execution of computation processing or encryption processing applying the parameter corresponding to the segment obtained from said parameter generating unit, and for executing restoration processing of data including the transformation data applied as replacement data as to the configuration data of said segment.

24. The information processing method according to claim 22, wherein said content reproduction processing has a step for executing processing for obtaining a packet number of a configuration packet of a segment included in a reproduction section, from an EP map included in clip information which is content reproduction section information;

and referencing a parameter identifier determining table correlating said parameter identifier with a packet number serving as content configuration data, and obtaining a parameter identifier corresponding to a packet number of a configuration packet of said segment.

25. The information processing method according to claim 24, wherein said parameter identifier determining table is a table wherein said parameter identifier and the packet number of a packet at the head position of a segment which is content configuration data are correlated.

26. The information processing method according to claim 24, wherein said packet number is a source packet number (SPN) corresponding to an I-picture included in an EP map.

27. The information processing method according to claim 22, wherein said content reproduction processing has a step for executing processing for obtaining an EP map registration table ID which is a registration table identifier of an EP map included in clip information which is content reproduction section information;

and referencing a parameter identifier determining table correlating said parameter identifier with the EP map registration table ID, to obtain a parameter identifier corresponding to the packet number of a configuration packet of said segment.

28. The information processing method according to claim 27, wherein said parameter identifier determining table is a table wherein said parameter identifier, and the EP map registration table ID which is a registration table identifier of an EP map including information of a packet at the head position of a segment which is content configuration data, are correlated.

29. The information processing method according to claim 22, wherein said content reproduction processing has a step for executing processing for obtaining an EP map registration table ID which is a registration table identifier of an EP map included in clip information which is content reproduction section information;

and calculating a parameter identifier corresponding to said segment, based on said EP map registration table ID.

30. The information processing method according to claim 29, wherein said content reproduction processing has a step for executing processing for calculating a parameter identifier corresponding to said segment based on said EP map registration table ID, following the following expression:

(SP ID)=(EP map_ID)/N

wherein SP;

ID;

parameter identifier;

EP map_ID;

EP map registration table ID; and

N;

the number of EP map registration tables set corresponding to one segment.

31. The information processing method according to claim 22, wherein said content reproduction processing has a step for executing processing for counting the number of times of usage of an EP map registration table included in clip information which is content reproduction section information, and calculating a parameter identifier corresponding to said segment based on the count for said EP map registration table.

32. The information processing method according to claim 22, wherein said content reproduction processing has a step for executing processing for obtaining fix-up table data including said transformation data from packets contained in the content, executing computation processing or encryption processing applying a parameter corresponding to a segment obtained from said parameter generating, and executing restoration processing of data including transformation data applied as replacement data as to configuration data of said segment.

33. The information processing method according to claim 22, wherein said content reproduction processing has a step for executing processing for obtaining fix-up table data including said transformation data from a fix-up table data different and independent from the content, executing computation processing or encryption processing applying a parameter corresponding to a segment obtained from said parameter generating unit, and executing restoration processing of data including transformation data applied as replacement data as to configuration data of said segment.

34. An information recording medium manufacturing method comprising the steps of:

generating data processing for

content of which a part of content configuration data is replaced and reproduced;

a fix-up table having correlated and registered a parameter identifier which is set to correlate to a segment wherein the content configuration data is sectioned into multiple segments and set, and transformation data which is an object to be replaced by a part of the content configuration data to be replaced;

wherein the transformation data has performed computation or coding processing based on the parameter correlating to the parameter identifier; and

data recording for recording content including the broken data and the transformation table onto the information recording medium.

35. A computer program for executing content reproduction processing on an information processing device, said program comprising the steps of:

content reproduction processing executed in a content reproduction processing unit for data transformation processing for rewriting a part of configuration data of input content to be reproduced, and processing for reproducing the reproduction content; and

parameter generating executed in a parameter generating unit, for providing said content reproduction processing with a parameter to be applied in said data transformation processing;

wherein said content reproduction processing has a step for obtaining a parameter identifier that is different for each segment set as a sectioning region of reproduction content and outputting a parameter calculation request accompanied by said parameter identifier to said parameter generating unit;

and wherein said parameter generating has a step for providing said content reproducing unit with a parameter corresponding to a segment, in response to the parameter calculation request from said content reproducing unit.