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

• US 8,203,730 B2
• Filed: 08/02/2011
• Issued: 06/19/2012
• 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
• Primary Examiner(s): Tieu, Benny Q
• Assistant Examiner(s): Augustin, Marcellus
• Application Number:
  US13/196,505
• Publication Number:
  US 20110289595A1
• Time in Patent Office: 322 Days
• Field of Search: 711/205, 711/206, 711/221, 715267-273, 726 1- 35
• US Class Current: 358/1.14
• 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 processor that executes data transformation processing that replaces a part of configuration data of input content to be reproduced with transformation data, and executes processing for reproducing the reproduction content;

a parameter generating unit that provides said processor with a parameter to be applied in said data transformation processing, wherein

said processor outputs a parameter calculation request accompanied by said parameter identifier to said parameter generating unit,

said parameter generating unit provides said processor with a parameter corresponding to a segment, said transformation data being registered in a fix-up table including proper content data, and

said processor applies the parameter to the fix-up table data, and executes restoration processing of data including the transformation data applied as replacement data as to the configuration data of said segment,

said fix-up table includes the transformation data registered to correspond to replacement data at a predetermined region within the reproduction content,

said processor executes 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 calculates a parameter identifier corresponding to said segment, based on said EP map registration table ID,

said fix-up table includes a type indicator identifying whether the transformation data is used for replacing the part of configuration data of the input content or for embedding identification information of a reproduction device or a reproduction application, and

said processor executes the data transformation processing based on the type indicator.

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

a processor that executes data transformation processing that replaces a part of configuration data of input content to be reproduced with transformation data, and executes processing for reproducing the reproduction content;

a parameter generating unit that provides said processor with a parameter to be applied in said data transformation processing, wherein

said processor outputs a parameter calculation request accompanied by said parameter identifier to said parameter generating unit, and

said parameter generating unit provides said processor with a parameter corresponding to a segment, said transformation data being registered in a fix-up table and including proper content data,

said processor applies the parameter to the fix-up table data, and executes restoration processing of data including the transformation data applied as replacement data as to the configuration data of said segment,

said fix-up table includes the transformation data registered to correspond to replacement data at a predetermined region within the reproduction content,

said processor executes processing for calculating a parameter identifier corresponding to said segment based on said EP map registration table ID according to the following expression;

(SP_ID) =(EP_map_ID)/N

wherein where 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,

said fix-up table includes a type indicator identifying whether the transformation data is used for replacing the part of configuration data of the input content or for embedding identification information of a reproduction device or a reproduction application, and

said processor executes the data transformation processing based on the type indicator.