CN101017686A - Information processing device, information recording medium, manufacturing device, methods, and program - Google Patents

Information processing device, information recording medium, manufacturing device, methods, and program Download PDF

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CN101017686A
CN101017686A CNA2006100644998A CN200610064499A CN101017686A CN 101017686 A CN101017686 A CN 101017686A CN A2006100644998 A CNA2006100644998 A CN A2006100644998A CN 200610064499 A CN200610064499 A CN 200610064499A CN 101017686 A CN101017686 A CN 101017686A
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data
content
parameter
section
identifier
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CN101017686B (en
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高岛芳和
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Sony Corp
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Sony Corp
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/16—Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units

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  • Databases & Information Systems (AREA)
  • Data Mining & Analysis (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
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  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)
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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.

Description

Messaging device, information recording carrier and manufacturing equipment, method and program
The cross reference of related application
It number is 60/724,803 right of priority that the application requires the U.S. Provisional Patent Application submitted on October 11st, 2005.
The present invention comprises the relevant theme of submitting in Jap.P. office with on September 13rd, 2005 of Japanese patent application JP2005-265476, and its full content is hereby expressly incorporated by reference.
Technical field
The present invention relates to messaging device, information recording medium manufacturing apparatus, information recording carrier and method and computer program thereof.More specifically also, the present invention relates to messaging device, information recording medium manufacturing apparatus, information recording carrier and method and computer program thereof, wherein eliminated undelegated content use, realized strict content use and management thus by on each content of having asked the content use and management, carrying out data conversion treatment.
Background technology
Various types of software datas, for example resemble the voice data of music etc., resemble the view data of film etc., games, various types of application programs etc. (hereinafter being called " content ") can be used as numerical data and are stored in the recording medium, for example, utilize the Blu-ray disc of blue laser, perhaps DVD (digital versatile disc), MD (mini disk) and CD (compact-disc).Particularly, using the Blu-ray disc of blue laser is the dish with high density recording ability, and can write down the data as high image quality such as a large amount of picture material.
Digital content is stored in so various types of information recording carriers (recording medium) so that offer the user.The user reproduces on the reproducer of for example PC (personal computer) that the user had, disk player etc. and uses this content.
Usually, for example the right of distribution of many contents of music data, view data etc. etc. is grasped by its producer or sellers.Therefore, when content allocation, execution wherein is provided with the configuration that some uses restriction usually, that is to say that only authorized users is allowed to use this content, and the reproduction that is not authorized to etc. is prevented from.
Utilize digital recording equipment and recording medium, can duplicate record and reproduction and not failure pattern picture or audio frequency, produce following problems thus, for example in the content of distributing illegal copies on the Internet, copy the distribution of dish of the illegal version of the so-called content on the CD-R etc. to, be stored in the use of the copied content on the hard disk of PC etc., spread unchecked.
The huge storage capacity recording medium for example DVD, use the recording medium of the blue laser of exploitation in the last few years etc., can be with mass data, for example, one to a plurality of films as digital information recording on single disc.The ability that image information etc. is recorded as numerical information makes and prevents that undelegated copy from becoming prior problem with the protection copyright holder.Recently realized that various technology stop the undelegated copy of digital recording equipment and recording medium, so that prevent this undelegated copy of numerical data.
Summary of the invention
A kind of unauthorised copies that prevents content and protection copyright holder's technology is the encryption of content.But, although utilize encrypted content, if still exist key to be revealed then the problem of undelegated decryption content leakage.The configuration of describing in the patent application publication number 11-45508 of Japanese unexamined is the correlation technique that wherein discloses the configuration that addresses this problem.The unexamined patent application publication number of Japan is that the application of 11-45508 discloses a kind of configuration, and wherein virtual by utilizing (dummy) data rewrite part content prevents the undelegated reproduction of content.
When the content reproduction of content of having utilized virtual data to substitute was handled therein, the processing that is used for virtual data is replaced by again the original contents data was necessary.Such data conversion treatment must be carried out under the situation of the external leakage that does not have original contents, in addition, preferably prevents the leakage of the process information of the position of virtual data for example and conversion method.The current state of technology is still to have a lot of problems need study so that carry out this processing and prevent information leakage in the mode of safety when reproducing about such configuration.
According to above-mentioned current state the present invention is proposed, therefore, expectation provides a kind of messaging device, a kind of information recording medium manufacturing apparatus, a kind of information recording carrier and method and computer program thereof, wherein damage content by part replacement configuration data, realize preventing undelegated content use effectively, and realized preventing the secure data processing of the information leakage in the reproduction processes.
According to one embodiment of present invention, a kind of messaging device that is used to carry out the content playback processing, comprise: the content playback processing unit, be used to carry out the data conversion treatment of the part of the configuration data that utilizes translation data to substitute the input content that to reproduce, and execution is used for to reproducing the processing that content is reproduced; And the parameter generating unit, be used to described content playback processing unit that the parameter that will be applied in the described data conversion treatment is provided; Wherein said content playback processing unit has the configuration that the calculation of parameter request that is used to get parms identifier and will be attended by described parameter identifier outputs to described parameter generating unit, and described parameter identifier is different for each section of the cut zone that is set to reproduce content; And wherein said parameter generating unit has and is used in response to providing configuration corresponding to the parameter of section from the calculation of parameter request of described content reproduction unit for described content reproduction unit.
In addition, described content playback processing unit has a kind of like this configuration, be used to use obtain from described parameter generating unit corresponding to the parameter of section the map table data that comprise described translation data are carried out computing or encryption, and the recovery that is used to carry out the data that comprise the translation data of using as the alternate data of described section configuration data is handled.
In addition, the content playback processing unit has the configuration that is used for carrying out following processing: from being included in the packet number that obtains the configuration packet that is included in the section the reproducing part as the EP figure of the clip information of contents reproducing section information; And with reference to described parameter identifier and the parameter identifier that is associated as the packet number of content configuration data are determined to show, and obtain parameter identifier corresponding to the packet number of described section configuration packet.
In addition, parameter identifier determines that table is wherein said parameter identifier and be positioned at packet number as the bag of the head position of the section of the content configuration data table that is mutually related.
In addition, packet number is corresponding to the source packet number (SPN) that is included in the I picture among the EP figure.
In addition, the content playback processing unit has the configuration that is used to carry out following processing: obtain EP figure registration Table I D, this EP figure registration Table I D is the registration table identifier that is included in as the EP figure in the clip information of contents reproducing section information; And determine to show with reference to the parameter identifier that described parameter identifier and EP figure registration Table I D is associated, to obtain parameter identifier corresponding to the packet number of described section configuration packet.
In addition, parameter identifier is determined table to be wherein said parameter identifier with EP figure registration Table I D as the registration table identifier of EP figure is mutually related one to show, and this EP figure comprises the information that is positioned at as the bag of the head position of the section of content configuration data.
In addition, the content playback processing unit has the configuration that is used to carry out following processing: obtain the EP figure registration Table I D as the registration table identifier of EP figure, described EP figure is included in the clip information as contents reproducing section information, and calculates parameter identifier corresponding to described section based on described EP figure registration Table I D.
In addition, the content playback processing unit has the configuration that is used to carry out following processing: calculate parameter identifier corresponding to described section according to following expression based on described EP figure registration Table I D:
(SP_ID)=(EP_map_ID)/N
SP_ID wherein: parameter identifier;
EP_map_ID:EP figure registration Table I D; And
N: the number of the EP figure registration table that is provided with corresponding to section.
In addition, the content playback processing unit has the configuration that is used for carrying out following processing: counting is included in the access times as the EP figure registration table of the clip information of contents reproducing section information, and calculates parameter identifier corresponding to described section based on the counting of described EP figure registration table.
In addition, unit, content playback place has a kind of like this configuration, be used for: carry out the processing of from the bag that is included in content, obtaining the map table data that comprise described translation data, what application was obtained from described parameter generating unit carries out computing or encryption corresponding to the parameter of section, and the recovery of carrying out the data that comprise the translation data of using as the alternate data of described section configuration data is handled.
In addition, the content playback processing unit has a kind of like this configuration, be used for: carry out from being different from and being independent of the processing that the map table data of content are obtained the map table data that comprise described translation data, what application was obtained from described parameter generating unit carries out computing or encryption corresponding to the parameter of section, and the recovery of carrying out the data that comprise the translation data of using as the alternate data of described section configuration data is handled.
In addition, parameter calculation unit can have configuration, is used for being carried out by the virtual machine that is embedded into messaging device.
In addition, messaging device has a kind of like this configuration, make calculation of parameter request carry out, and the parameter from described parameter calculation unit to described content playback processing unit provide in response to described interrupt request and carry out as interrupt request from described content playback processing unit to described parameter calculation unit.
Information recording medium manufacturing apparatus according to another embodiment of the invention, comprise: data processing unit, be used for producing: the content that comprises the destruction data that are different from correct content configuration data, and map table, comprise the definite table of the parameter identifier of storing following content: the map table body data, these data are by utilizing the parameter that is provided with corresponding to the section as the sectional area of content that the translation data that is used for alternative described destruction data is calculated or encryption is stored, and as the parameter identifier of the identification information of described parameter; And data record unit, the content and the described map table that are used for comprising described destruction data are recorded in information recording carrier.
In addition, parameter identifier determines that table is wherein said parameter identifier and be positioned at packet number as the bag of the head position of the section of the content configuration data table that is mutually related.
In addition, parameter identifier is determined table to be wherein said parameter identifier with EP figure registration Table I D as the registration table identifier of EP figure is mutually related one to show, and this EP figure comprises the information as the bag of the content configuration data of the head position of the section of being positioned at.
Information recording carrier has according to another embodiment of the invention been stored: the replaced and content reproduced of wherein a part of content configuration data; Map table, correspondence has also been registered parameter identifier and translation data, described parameter identifier is set up corresponding to section, and wherein the content configuration data are divided into a plurality of sections and be set up, and described translation data is the object that substitutes by a part of wanting replaced content configuration data; Wherein this translation data is based on corresponding to the parameter of parameter identifier and has carried out the data of calculating or encoding process.
In addition, information recording carrier can further have the show time scale (PTS) of entry point, and EP figure, on this EP figure, and the associated and registration as the packet number of address; And
Described segment base is cut apart in a plurality of entry point that are registered to this EP figure.
In addition, this section can be based on the entry point of fixed number and cut apart.
A kind of information processing method that is used to carry out the content playback processing according to another embodiment of the invention, comprise step: the content playback of carrying out in the content playback processing unit is handled, be used to carry out the data conversion treatment of rewriting, and be used for reproducing the processing that content is reproduced with a part of configuration data of reproduced input content; And the parameter generating of in the parameter generating unit, carrying out, be used to described content playback processing unit that the parameter of using in described data conversion treatment is provided; Wherein said content playback is handled has following step, the calculation of parameter request that gets parms identifier and will be attended by described parameter identifier outputs to described parameter generating unit, and this parameter identifier is different for each section of the cut zone that is set to reproduce content; And wherein said parameter generating has following step, in response to the calculation of parameter request from described content reproduction unit, for described content reproduction unit provides parameter corresponding to section.
In addition, content playback is handled can have step: be used to use the parameter of obtaining from described parameter generating unit corresponding to section the map table data that comprise described translation data are carried out computing or encryption, and the recovery that is used to carry out the data that comprise the translation data of using as the alternate data of described section configuration data is handled.
In addition, content playback is handled and to be had the step that is used for carrying out following processing: from being included in the packet number that obtains the configuration packet that is included in the section the reproducing part as the EP figure of the clip information of contents reproducing section information; And with reference to described parameter identifier and the parameter identifier that is associated as the packet number of content configuration data are determined to show, and obtain parameter identifier corresponding to the packet number of described section configuration packet.
In addition, parameter identifier determines that table is wherein said parameter identifier and be positioned at packet number as the bag of the head position of the section of the content configuration data table that is mutually related.
In addition, packet number can be corresponding to the source packet number (SPN) that is included in the I picture among the EP figure.
In addition, content playback is handled has the step that is used to carry out following processing: obtain the EP figure registration Table I D as the registration table identifier of EP figure, this EP figure is included in the clip information as contents reproducing section information; And determine to show with reference to the parameter identifier that described parameter identifier and EP figure registration Table I D is associated, to obtain parameter identifier corresponding to the packet number of described section configuration packet.
In addition, parameter identifier is determined table to be wherein said parameter identifier with EP figure registration Table I D as the registration table identifier of EP figure is mutually related one to show, and this EP figure comprises the information that is positioned at as the bag of the head position of the section of content configuration data.
In addition, content playback is handled has the step that is used to carry out following processing: obtain the EP figure registration Table I D as the registration table identifier of EP figure, this EP figure is included in the clip information as contents reproducing section information, and calculates parameter identifier corresponding to described section based on described EP figure registration Table I D.
In addition, content playback is handled and to be had the step that is used to carry out following processing: calculate parameter identifier corresponding to described section according to following expression formula based on described EP figure registration Table I D:
(SP_ID)＝(EP_map_ID)/N
SP_ID wherein: parameter identifier;
EP_map_ID:EP figure registration Table I D; And
N: the number of the EP figure registration table that is provided with corresponding to section.
In addition, content playback is handled has the step that is used for carrying out following processing: counting is included in the access times as the EP figure registration table of the clip information of contents reproducing section information, and calculates parameter identifier corresponding to described section based on the counting of described EP figure registration table.
In addition, content playback is handled has the step that is used for carrying out following processing: obtain the map table data that comprise described translation data from the bag that is included in content, application is carried out computing or encryption from what described parameter generating was obtained corresponding to the parameter of section, and the recovery of carrying out the data that comprise the translation data of using as the alternate data of described section configuration data is handled.
In addition, content playback is handled has the step that is used to carry out following processing: obtain the map table data that comprise described translation data from the map table data that are different from and be independent of content, what application was obtained from described parameter generating unit carries out computing or encryption corresponding to the parameter of section, and the recovery of carrying out the data that comprise the translation data of using as the alternate data of described section configuration data is handled.
A kind of information recording medium manufacturing method according to another embodiment of the invention comprises step: produce data processing, be used for the content that wherein a part of content configuration data are replaced and reproduce; Map table, association has also been registered parameter identifier and translation data, described parameter identifier is set to be associated with section, and wherein the content configuration data are divided into a plurality of sections and be set up, and described translation data is the object that substitutes by a part of wanting replaced content configuration data; Wherein this translation data has been carried out calculating or encoding process based on the parameter that is associated with parameter identifier; And data recording, be used for and will comprise that the content record that destroys data and conversion table is to this information recording carrier.
A kind of computer program that is used on messaging device, carrying out the content playback processing according to another embodiment of the invention, described program comprises step: the content playback of carrying out in the content playback processing unit is handled, be used to carry out the data conversion treatment of rewriting, and be used for processing that this reproduction content is reproduced a part of configuration data of reproduced input content; And the parameter generating of in the parameter generating unit, carrying out, be used to described content playback processing unit that the parameter of using in described data conversion treatment is provided; Wherein said content playback is handled has following step, the calculation of parameter request that is used to get parms identifier and will be attended by described parameter identifier outputs to described parameter generating unit, and this identifier is different for each section of the cut zone that is set to reproduce content; And wherein said parameter generating has following step, is used in response to the calculation of parameter request from described content reproduction unit, for described content reproduction unit provides parameter corresponding to section.
Note, according to computer program of the present invention can be, for example, a kind ofly can offer the computer program that computer system makes it carry out various types of program codes by the storage medium that can provide with computer-readable format or communication media, recording medium is CD, FD, MO etc. for example, perhaps communication media network etc. for example.Provide a kind of like this program to realize processing with computer-readable format corresponding to the program on the computer system.
From the further detailed description of the embodiment that describes in the back as the present invention and accompanying drawing, other purposes of the present invention, feature and advantage will become clearly.Notice that the term " system (system) " that uses in this manual refers to the logical combination configuration of a plurality of equipment, is not in the interior configuration of same shell and be not restricted to wherein all component devices.
According to one embodiment of present invention, has such configuration, be used to recover and obtain by for the different calculation of parameter of each section (segment) of the cut zone that is set to content or encryption and data converted, and utilize the part of the translation data alternate content data of obtaining to carry out reproduction of content, can realize following configuration, wherein based on the table that the SPN (source packet number) that is included in the content that will reproduce and parameter I D (SP_ID) are associated, perhaps based on the registration table identifier (EP figure registration Table I D) of the EP figure of the information of the bag in the section of the content that storage package is contained in to reproduce and the table that parameter I D is associated, and obtain parameter I D corresponding to this section, this parameter I D that obtains (SP_ID) is notified to safe VM, and carry out secret parameter computation requests (INTRP), therefore can carry out content playback and carry out suitable data-switching by sequentially receiving corresponding to the secret parameter (SP) of each section by rights simultaneously from safety VM.
In addition, according to one embodiment of present invention, can realize a kind of configuration, the reproduction (player) of wherein carrying out content playback use at first according to the EP figure that in montage (clip) information, registers as contents reproducing section information (content reproductionsection information) determine corresponding to will be reproduced the EP figure of content-data, and based on the registration table identifier of EP figure (EP figure registration Table I D), utilize computing formula or utilize the counting of the EP figure registration table ID (SP_ID) that gets parms, this parameter I D that obtains (SP_ID) is notified to safe VM, and carry out secret parameter computation requests (INTRP), therefore do not use special parameter ID to determine the table ID (SP_ID) that yet can get parms, and can carry out content playback and carry out suitable data-switching by the secret parameter (SP) that sequentially receives corresponding to each section from safety VM by rights simultaneously.
Description of drawings
Fig. 1 describes to be stored in the configuration of the data in the information recording carrier and the chart of processing and driving arrangement and messaging device;
Fig. 2 describes the chart that example is set be used for the content management units that the storage data to information recording carrier are provided with;
Fig. 3 describes to be used for the content management units that the storage data to information recording carrier are provided with and the chart of the relation between the unit key;
Fig. 4 describes the chart that is recorded in the content in the information recording carrier and is used to reproduce the necessary data conversion treatment of content;
Fig. 5 is the chart of the data configuration under the situation about describing in the bag of transport stream that conversion (fix-up) table is stored in content;
Fig. 6 is a chart of describing the details of the content be stored in the information recording carrier and map table;
Fig. 7 is the chart that explanation is included in the data configuration of the transformation entry (fix-up entry) in the map table;
Fig. 8 is the interior chart of using the data conversion treatment of transformation entry of TS bag that is described in component content;
Fig. 9 describes the chart of using the data conversion treatment that is included in the transformation entry in the map table;
Figure 10 is the chart that is described in the processing sequence of implementing between reproduction (player) application and the safe VM;
Figure 11 be describe be used for reproduce (player) use and safe VM between the processing sequence in the chart of processing of the copy map table implemented of title initialization process;
Figure 12 is described in the acceptance at safe VM place or the chart that refusal is handled sequence;
Figure 13 is a chart of describing the processing example of content playback processing;
Figure 14 is the chart of the data conversion treatment of execution when being described in content playback;
Figure 15 describes the chart be used to obtain corresponding to the overview of the processing example 1 of the SP identifier (SP_ID) of section;
Figure 16 is a chart of describing EP figure;
Figure 17 is a chart of describing EP figure;
Figure 18 describes to be used to obtain corresponding to the sequence of the processing example 1 of the SP identifier (SP_ID) of section and the chart that SP_ID determines the configuration example of table;
Figure 19 is the chart of the overall data configuration of explanation map table;
Figure 20 describes the chart that SP_ID determines the configuration example of table;
Figure 21 is the chart that explanation is included in the data configuration of the map table main body in the map table;
Figure 22 is the chart that explanation is included in the data configuration of the conversion table block (FUT piece, fix-up table block) in the map table main body;
To be declarative description using the chart that is used to obtain corresponding to the process flow diagram of the content playback sequence under the situation of the processing example 1 of the SP identifier (SP_ID) of section to Figure 23;
To be declarative description using the chart that is used to obtain corresponding to the process flow diagram of the content playback sequence that is used for special reproduction under the situation of the processing example 1 of the SP identifier (SP_ID) of section to Figure 24;
Figure 25 is described in the chart that the SP_ID that handles in the example 2 determines the configuration example of table;
To be declarative description using the chart that is used to obtain corresponding to the process flow diagram of the content playback sequence under the situation of the processing example 2 of the SP identifier (SP_ID) of section to Figure 26;
To be declarative description using the chart that is used to obtain corresponding to the process flow diagram of the content playback sequence that is used for special reproduction under the situation of the processing example 2 of the SP identifier (SP_ID) of section to Figure 27;
Figure 28 describes the chart be used to obtain corresponding to the overview of the processing example 3 of the SP identifier (SP_ID) of section;
To be declarative description using the chart that is used to obtain corresponding to the process flow diagram of the content playback sequence under the situation of the processing example 3 of the SP identifier (SP_ID) of section to Figure 29;
To be declarative description using the chart that is used to obtain corresponding to the process flow diagram of the content playback sequence that is used for special reproduction under the situation of the processing example 3 of the SP identifier (SP_ID) of section to Figure 30; And
Figure 31 describes the chart be used to carry out as the hardware configuration example of the messaging device of the application of main frame.
Embodiment
Describe in detail below with reference to accompanying drawings according to messaging device of the present invention, information recording medium manufacturing apparatus, information recording carrier and method and computer program thereof.Attention will be described according to following item.
1. the overview of storage data in information recording carrier and the processing on driver and main frame
2. about content management units (CPS unit)
3. comprise the data configuration of the content of revising data and the overview of data conversion treatment
4. reproduce the processing of (player) application and safe VM
5. content playback is handled
6. be used to obtain processing corresponding to the SP identifier (SP_ID) of section
(6.1) be used to obtain processing example 1 corresponding to the SP identifier (SP_ID) of section
(6.2) be used to obtain processing example 2 corresponding to the SP identifier (SP_ID) of section
(6.3) be used to obtain processing example 3 corresponding to the SP identifier (SP_ID) of section
7. the configuration of messaging device
8. information recording medium manufacturing apparatus and information recording carrier
1. the overview of storage data in information recording carrier and the processing on driver and main frame
At first, will be described for the overview of storage data in information recording carrier and the processing on driver and main frame.Fig. 1 has illustrated the configuration of storing substantial information recording carrier 100, driver 120 and main frame 140 within it.For example, main frame 140 is that the data reproduction of carrying out on the messaging device of for example PC etc. (or record) is used, and according to predetermined data processing sequence, utilizes to carry out such as the hardware of the messaging device of PC etc. and handles.
Information recording carrier 100 is the information recording carriers such as Blu-ray disc, DVD etc., and be the information recording carrier (ROM CD etc.) of storage authorized content, the permission of so-called content rights holder through having suitable content rights or right of issue is made in the manufacturing plant at dish, or information recording carrier (RE dish etc.) that can record data.Notice that utilizing the following examples, dish-type medium to be used as example comes the descriptor recording medium, the present invention can be applied to the configuration of using various types of information recording carriers.
As shown in Figure 1, information recording carrier 100 storage inside have been carried out encryption and the alternative encrypted content 101 of section data, MKB (media key block) 102 as the encryption key block that produces based on a kind of tree construction distribute keys method that is called as broadcast encryption method, the title key file 103 that constitutes by data that wherein will be applied to the title key encrypted (encrypting the CPS unit key) that content-encrypt handles etc., comprise service regeulations 104 as the CCI (copy control information) of the copy/reproduction control information of content etc., wherein registered corresponding to map table 105 in the translation data of the alternate data of the presumptive area of content, and the conversion processor 106 that comprises the processing command that is used to carry out data conversion treatment and map table 105.Notice that the data example that illustrates in the drawings only is an example, and the data of storage may be different more or less with the type of dish.To each summary of the information of these types be described.
(1) encrypted content 101
Various types of data are stored in the information recording carrier 100.The example of content comprises AV (audiovisual) stream of mobile picture material, for example as HD (high definition) movie contents of high definition moving image data, by the games of specific criteria prescribed form, image file, voice data, text data or the like.These contents are the data by specific AV format specification, and according to specific AV data layout storage.Particularly, for example be stored as Blu-ray disc ROM normal data according to Blu-ray disc ROM standard format.
In addition, for example exist wherein games, image file, voice data, text data etc. to be stored as the situation of service data.Exist these contents to be stored as data conditions with the data layout that does not meet specific AV data layout.
Content type comprises various contents, for example music data, mobile image, rest image, and similarly view data and games, web content or the like, and various forms of information are comprised in these contents, the content information that uses of data that only can origin self-information recording medium 100 for example, the content information that can use from the data of information recording carrier 100 and from the data that the server that is connected to network provides by combination etc.Utilization is suitable for the different keys (CPS unit key or unit key (also can be called as title key)) of each part (section) content, be stored in the encrypted storage of content in the information recording carrier, realize that the difference of each partial content is used control.Each unit that unit key was fit to is called as content management units (CPS unit).In addition, the configuration data of content is set to destroy data (broken data), wherein its part data of being different from correct content-data substitute, therefore being decrypted processing separately can not reproduce correct content, in order to carry out reproduction, it is necessary utilizing the data that are registered in the map table to substitute the processing that destroys data.The back will be described this processing in detail.
(2)MKB
MKB (media key block) 102 is based on the encryption key block that a kind of tree construction distribute keys method that is called as broadcast encryption method produces.This MKB102 is a kind of only for the key information piece that allows to obtain the necessary media key of decryption content [Km] based on the processing (deciphering) of the Device keys on the messaging device that is stored in the user with effective permission [Kd].This is an application, so the information distribution method is followed so-called hierarchical tree structure, only allow to obtain media key [Km] under subscriber equipment (messaging device) has the situation of effective permission, (cancellation is handled) subscriber equipment that is confirmed to be void can not obtain media key [Km].
Administrative center as license entity can produce the MKB with the structure that can not utilize the Device keys deciphering that is stored in certain subscriber equipment, that is to say, wherein be used for being stored in the Device keys of deciphering of the key information of MKB, can not obtain the required media key of contents decryption by change.Therefore, undelegated equipment can be cancelled at any time, thereby only provides the encrypted content that can decipher for the equipment with effective permission.Contents decryption is handled and be will be described later.
(3) title key file
As mentioned above, the group of perhaps a plurality of contents is encrypted in each, wherein for the single key of each content application (title key (CPS unit key)) so that the use of organize content, and with described content stores in information recording carrier 100.That is to say, the AV of component content (looking institute) stream, music data, mobile image, rest image, and similarly view data, games, web content etc., the different title key that need be utilized as each cutting unit generation are divided into the administrative unit that content is used, and have therefore realized decryption processing.The information that is used to produce these title key is the title key data, for example by utilizing the title key of having been encrypted by the secret key decryption of generations such as media key to obtain title key.Use the title key data to produce the title key of sequence generation, and carry out the deciphering of content corresponding to each unit according to predetermined encryption key.
(4) service regeulations
Service regeulations comprise, for example, and copy/reproduction control information (CCI).This is copy restricted information and the reproducing limit information that is used for corresponding to the use control of the encrypted content 101 that is stored in information recording carrier 100.There are the various settings be used for copy/reproduction control information (CCI), for example are used to be set to the situation of information of the single CPS unit of content management units, corresponding to the situation of a plurality of CPS unit setting etc.
(5) map table
As mentioned above, the encrypted content 101 that is stored in the information recording carrier 100 has carried out predetermined encryption, and the part of content configuration data is made of the destruction data that are different from correct data.In order to reproduce content, it is essential that data rewrite (overwriting) is handled, and wherein destroys the translation data that data are used as correct content-data and substitutes.The table of wherein having registered translation data is a map table 105.Run through content and disperse to be provided with a large amount of destruction data, and in content playback, must utilize the translation data that is registered in the map table to substitute (rewriting) many processing that destroy data.Even using this translation data means revealing owing to encryption key and carries out under the situation of undelegated contents decryption, because the existence of replaced data, only can not realize correct reproduction of content by contents decryption, thereby can stop undelegated content to be used.
Except common translation data, map table 105 also comprises and makes it possible to analyze the translation data that is used to discern the data identification information configuration position that content reproducing device or content playback use.Particularly, for example, this comprises that perhaps " translation data that comprises identification marking " wherein write down the identifying information that produces based on player ID as the player ID of the recognition data of player (carrying out the equipment of host application).The translation data that comprises identification marking is the data that the place value of wherein correct content-data has slightly been changed on the degree that does not influence content playback.The details of the processing that utilizes such translation data will be described subsequently.
Though Fig. 1 illustrated map table 105 wherein and be set to the example of independent data file, can make map table and be not individual files but run through configuration in the configuration packet that is dispersed in encrypted content 101.Subsequently these configurations and processing will be described.
(6) data conversion treatment program
Data conversion treatment program 106 is to comprise the program that the log-on data of utilization in map table 105 carried out the processing command of data conversion treatment, and is used by the main frame that reproduces content.This carries out on the data conversion treatment unit 154 of main frame shown in Figure 1 100.Notice that above-mentioned map table 105 can be set to be included in the data in the data conversion treatment program 106.
On this main frame, be provided for carrying out the virtual machine (VM) of data conversion treatment, the data conversion treatment program 106 of reading from information recording carrier 100 is carried out at virtual machine (VM), use the registry entries (entry) in the map table 105, and about the conversion process of decryption content execution for the part configuration data.The details of this processing will be described subsequently.
Then, with reference to Fig. 1 the configuration of main frame 140 and driver 120 and the overview of processing are described.The reproduction of content processing that is stored in the information recording carrier 100 is carried out for the data that are sent to main frame 140 by driver 120.
Main frame 140 has reproduction (player) application 150 and safe VM160 group.Reproducing (player), to use 150 are content playback processing units, and carry out and handle the checking processing that for example utilizes driver to carry out, contents decryption, decoding processing or the like when content playback is handled.Safe VM160 plays the parameter generating unit, be used for providing to be applied in and use the parameter that 150 content playbacks of carrying out are handled the data conversion treatment of carrying out as the reproduction (player) of content playback processing unit, for example, safe VM160 is set to the virtual machine in the main frame 140.Virtual machine (VM) is a virtual machine of directly explaining and carry out intermediate language, and the instruction code information of reading the intermediate language that does not depend on platform from information recording carrier 100, and explains and carry out it.
The transmission of information between reproduction (player) application 150 and safe VM160 or processing request realizes by the sequence from the interruption (INTRP) of reproduction (player) application 150 to safe VM160 and the response (calling) from safety VM160 to reproduction (player) application 150.From using 150 interruptions (INTRP) and using the sequence execution parameter computation requests of 150 response (calling) and the parameter that is applied to the data conversion treatment of carrying out content playback is handled is provided to reproducing (player) from safety VM160 to safety VM160.To describe these subsequently in detail and handle sequence.
To the main processing that main frame 140 is carried out be described.Before content is used, between driver 120 and main frame 140, carry out mutual authentication processing, and then set up two sides' validation by this authentication processing, transmit encrypted content from driver and give main frame, carry out that contents decryption is handled and in addition in host side, carry out above-mentioned data conversion treatment, thereby carried out content playback according to map table.
Levy for recognizing each other mutually of between main frame 140 and driver 120, carrying out, by the issue of reference administrative center about each equipment or use cancellation (invalid) tabulation that whether is registered to undelegated equipment or application, carry out the processing of determining of validity.
Driver 120 has the storer 122 of the storage host of being used for CRL (Certificate Revocation List proves the cancellation tabulation), and this host C RL storage host proves cancellation (invalid) information of (public keys proves).On the other hand, main frame 140 has the storer 152 that is used for memory driver CRL (proof cancellation tabulation), and this driver CRL memory driver proves cancellation (invalid) information of (public keys proves).This storer is nonvolatile memory (NVRAM), and the CRL that reads in recognizing information recording carrier 100 is under the situation of more recent version, for example, their data processing units 121 and 151 are separately carried out and to be used for the renewal that host C RL or driver CRL with redaction be stored in storer 122 and 152 and to handle.
CRL, for example host C RL or driver CRL are by administrative center's continuous updating.That is to say that under the new situation that undelegated equipment occurs, the CRL of renewal is published, wherein be published to the proof ID of unauthorized device or device id etc. and be added as new clauses and subclauses.Each CRL provides version number, and has the configuration that can compare freshness.For example, if the CRL that reads from the information recording carrier that is installed to driver is newer than the CRL in the storer 122 that is stored in the driver, then driver is carried out CRL renewal processing.Main frame 140 is also carried out driver CRL in an identical manner and is upgraded.
Except such CRL upgrade handle, the data processing unit 121 of driver 120 is carried out authentication processing for the main frame of carrying out when using content, and further carries out and be used for from the information recording carrier sense data and data be sent to the processing of main frame.
For example, it is that the data reproduction of carrying out on the messaging device of for example PC (or record) is used that the reproduction of main frame 140 (player) uses 150, and utilizes the hardware of the messaging device of PC for example etc. to carry out according to predetermined data processing sequence and handle.
Main frame 140 has the decryption processing unit 153 that is used for carrying out with the data processing unit 151 of the mutual authentication processing of driver 120, Data Transmission Controlling etc., is used to carry out the decryption processing of encrypted content, is used for based on carrying out the data conversion treatment unit 154 of data conversion treatment in the registered data of aforesaid map table 105 and being used for (for example carrying out decoding, mpeg decode) codec processing unit 155 of Chu Liing.
The authentication processing that data processing unit 151 is carried out between main frame and the driver, and in authentication processing,, confirm that driver is not the driver that has been cancelled with reference to being stored in as the driver CRL among the storer a152 of nonvolatile memory (NVRAM).Main frame is also carried out to upgrade to handle and is stored among the storer a152 with the driver CRL with redaction.
Decryption processing unit 153 produces the key that will be applied to contents decryption, utilizes the data that are stored in the various types of information among the storer b156 and read from information recording carrier 100, carries out the decryption processing of encrypted content 101.The alternate process (rewriting) that the translation data of registering is carried out the content configuration data is used according to the data conversion treatment program of obtaining from information recording carrier 100 in data conversion treatment unit 154 from the map table that information recording carrier 100 obtains.This codec processing unit 155 is carried out decoding (for example, mpeg decode) and is handled.
The storer b156 memory device key of messaging device 150: Kd will be applied to the key information of mutual authentication processing, with key information of being applied to deciphering etc.The details that contents decryption is handled will be described subsequently.Device keys: Kd will be applied to the key that above-mentioned MKB handles.MKB is the key information piece that can obtain media key [Km], this media key is essential to decryption content, only can obtain by processing (deciphering) based on the Device keys in the messaging device that is stored in user [Kd] with effective permission, and in the content that deciphering has been encrypted, messaging device 150 has been used the Device keys that is stored among the storer b156: Kd and has been handled to carry out MKB.The details that contents decryption is handled will be described subsequently.
2. about content management units (CPS unit)
As mentioned above, the content that is stored in the information recording carrier will be decrypted processing and utilize the different keys storages that are suitable for each unit, uses control so that realize the difference of each unit.That is to say that content is split into content management units (CPS unit), carry out independent decryption processing and carry out independent use and management.
When using content, at first, need obtain the CPS unit key (being also referred to as title key) that is suitable for each unit, and further, carry out reproduction by carrying out based on the data processing of the decryption processing sequence of formerly determining, the essential key of using other, key generation information etc.The setting of content management units (CPS unit) is described with reference to Fig. 2 below.
As shown in Figure 2, content has the hierarchy of (A) index 210, (B) movie objects 220, (C) playlist 230 and (D) montage (clip) 240.For example specify and to have specified the playback program relevant by the index of the title that reproduces application access, and selected to have stipulated reproduction of content playlist in proper order according to the program information of the playback program of appointment with title.
Playing item is comprised in the playlist as the information with reproduced data.As the AV stream of the real data of content, or order, optionally read by the clip information of the reproducing part of the broadcast item regulation that is included in playlist by being used for, and the execution of the reproduction of AV stream and order is handled and is performed.Note existing a large amount of playlists and play, and each all has corresponding playlist ID and play an ID, as identifying information.
Fig. 2 has illustrated 2 CPS unit.These have constituted a part of content that is stored in the information recording carrier.Each of CPS unit 1 271 and CPS unit 2 272 is to be set to comprise title, the movie objects as the playback program file, the playlist as index and to have comprised CPS unit as the unit of the montage of the AV stream file of actual content data.
Content management units (CPS unit) 1 271 comprises title 1 211 and title 2 212, playback program 221 and 222, playlist 231 and 232, montage 241 and montage 242, and the AV stream data file 261 and 262 as the real data that is included in the content in two montages 241 and 242 is the object data of encrypting at least, and the enciphered data that therefore has been set to use title key (Kt1), this key is the encryption key (being also referred to as the CPS unit key) that is provided with according to the content management units (CPS unit) 1 271 as rule.
Content management units (CPS unit) 2 271 comprises application 1 213, playback program 224, playlist 233 and the montage 243 as index, uses as the title key (Kt2) of the encryption key that is provided with corresponding to content management units (CPS unit) 2272 as the AV stream data file 263 of the real data that is included in the content in the montage 243 and encrypts.
For example, handle for the user can be carried out corresponding to the application file of content management units 1 271 or content playback, the title key that is used as encryption key that is set to be associated with content management units (CPS unit) 1 271: Kt1 need be acquired and carry out decryption processing.Handle for the user can be carried out corresponding to the application file of content management units 2 272 or content playback, be set to the title key that is associated with content management units (CPS unit) 2272: Kt2 and need be acquired and carry out decryption processing as encryption key.
Fig. 3 shows the CPS unit configuration is set, and the example of corresponding title key.Fig. 3 shows as being used for managed storage and in the CPS unit of the unit of the use of the encrypted content of information recording carrier the unit is set and is applicable to relation between the title key (CPS unit key) of each CPS unit.The title key of noting the data of CPS unit and follow-up arrival can be stored and set in advance.For example, data cell 281 is clauses and subclauses of the data of follow-up arrival.
The CPS unit is provided with the unit and adopts various ways, for example content title, application, data set or the like, and each CPS Single Component Management table is provided with therein as the CPS unit ID corresponding to the identifier of each CPS unit.
In Fig. 3, title 1 for example is CPS unit 1, and when deciphering belonged to the encrypted content of CPS unit 1, it was essential producing title key Kt1 and carrying out decryption processing based on the title key Kt1 that produces.
Like this, be stored in that content in the information recording carrier 100 is suitable for the different encryption keys of each unit with utilization and the mode of having carried out encryption is stored, use control so that realize the difference of each unit.UR (service regeulations) for each content management units (CPS unit) considers each content management units (CPS unit) and is set for independent use and management.Service regeulations are to comprise for example information of the copy/reproduction control information of content (CCI), as mentioned above, and the copy restricted information or the reproducing limit information that are included in the encrypted content in each content management units (CPS unit).
Having used the data processing that is stored in the various types of information in the information recording carrier is essential for producing title key.To describe the object lesson of such processing subsequently in detail.
3. comprise the data configuration of the content of revising data and the overview of data conversion treatment
Then, with to being described about the data configuration that comprises the content of revising data and the overview of data conversion treatment.As mentioned above, the encrypted content 101 that is included in the information recording carrier 100 is set to destroy data, the data that wherein a part of configuration data is different from correct content-data substitute, therefore independent decryption processing can't be carried out content playback when reproducing, and the processing that utilizes the translation data that is registered in the map table to substitute the destruction data is essential.
To the configuration that be stored in the content in the information recording carrier be described with reference to figure 4, and the overview of reproduction processes.For example, AV (audiovisual) content for example film be stored in the information recording carrier 100.These contents are encrypted, and the deciphering of the processing by only using the encryption key that can be obtained by the reproducer with specific permission, can carry out content playback.The certain content reproduction processes will be described in the back.The content that is stored in the information recording carrier 100 is not only encrypted, and has configuration data wherein and be modified the configuration that data substitute.
Fig. 4 has illustrated the example of the configuration of the recorded content 291 that is stored in the information recording carrier 100.The content 291 of this record is by the normal content data 292 that are not modified, and conduct has been passed through to revise and destruction data 293 formations of ruined content.Destroy the data that data 293 are subjected to the initial content destruction of data processing.Therefore, can not utilize and comprise this content 291 of destroying data and carry out correct content playback.
In order to carry out content playback, utilize correct content-data to substitute the destruction data 293 that are included in the recorded content 291, be essential to produce the processing of reproducing content 296.Obtain and be used for data converted (translation data) by obtaining the translation data 295 (transformation entry 295) that is registered in (referring to Fig. 1) in the map table (FUT) 105 that is recorded in the information recording carrier 100 as the correct content-data that destroys data corresponding to each, carry out to destroy the alternate process of the data of data area, therefore produce and reproduce this reproduction content 296.The object lesson of details that to describe map table below and use the reproduction processes of map table.
Now, when producing reproduction content 296, except the translation data 297 that is used as the normal content data substitutes the processing that destroys data 293, also carry out and utilize the identifier that comprises the data that make it possible to analyze the configuration bit that makes content reproducing device or content playback use discernible identifying information (for example, player ID) that the processing that translation data (identifier-set transformation data) 298 substitutes the part zone of the content 291 that has write down is set.For example, under the situation that undelegated copied content is revealed, analyze the identifier of having revealed in the content source of leakage that translation data 298 can be determined unauthorized content is set.
The map table of noting the storage translation data is recorded in the information recording carrier, is set to the file that separates with content.In addition, a part of data in comprising the map table of translation data are with the mode record of the dispersion of the specified packet in the configuration data that runs through content.That is to say that translation data is stored in the map table shown in Figure 1 105, simultaneously also disperseed to be recorded in the encrypted content 101, thereby with the mode record of copy.Be used for carrying out the messaging device of content playback or obtain the translation data that is stored in map table 105 substituting, or obtain with dispersing mode and run through content and the conversion clauses and subclauses that write down substitute to carry out data to carry out data.
Under the situation of the configuration of in the conversion table block, writing down (described is the map table configuration data that comprises the translation data that is scattered in the specified packet in the content configuration data), for example, conversion table block configuration data is stored in the transport stream packets of content, has setting as shown in Figure 5.In Fig. 5, (a) configuration of content-data has been described.This content configuration has illustrated the content-data of being made up of decrypted transport stream (TS) bag.This transport stream is made of TS (transport stream) bag of the byte with predetermined quantity.The configuration data that comprises the conversion table block of translation data is recorded in the mode of separating in the part of a plurality of bags of these TS bags.For example, shown in the figure is to carry out record in TS bag 307.The example that is used for the TS bag of memory mapping table block comprises containing in the mode of disperseing and runs through PMT (program map table, flowchart) that content is provided with etc.
What write down in the conversion table block is to be used for carrying out the translation data (or identifier is provided with translation data) of alternate process and the record position of translation data at decryption content.As for record position information, if there are a plurality of record positions, for example shown in (b) of Fig. 5, for example, from comprising skew as the TS bag 307 of the transformation entry of the configuration data of conversion table block, be registered as first and revise package location, the deviation post indication is revised bag 308 is registered as second bag to the relative package location of next one modification bag 309 modification package location from the mat woven of fine bamboo strips one.
The translation data that writes down in each conversion table block has near the record position that is arranged on the TS bag, and this TS wraps the transformation entry that has as the configuration data of each conversion table block, for example shown in Fig. 5 (b).
In the example shown in (b) of Fig. 5, for example, the bag 308 and 309 with translation data posting field is set near the bag 307 that has as the transformation entry of the configuration data of conversion table block.The data alternate process that such setting can be used translation data is as according to real time decrypting with reproduce the lasting processing of the deciphering under the situation of content, and the detection of the TS of record coversion table bag and analyzing and processing allow to carry out effectively and be used for obtaining translation data and translation data is written to processing in the position (rewriting) that table writes down.
The example of the configuration that is stored in data conversion treatment program 300, map table (FUT) 301 and encrypted content 306 in the information recording carrier 100 is described with reference to Fig. 6.As shown in Figure 6, being recorded in map table 301 in the information recording carrier 100 has and comprises that secret parameter ID determines the configuration of table 302 and map table main body 303a.
Map table main body 303a is set to be used for the map table group 303b of each montage, be that the map table of unit is made of to K304 a plurality of conversion table block 1 with each montage, and in addition, each conversion table block has the configuration that comprises a plurality of transformation entry 305.Each of these transformation entry comprises and will be used as the translation data of alternate data, and the record position information of translation data.
Fig. 7 has illustrated the example of the data configuration of a transformation entry (FixUpEntry) that is included in the conversion table block.As shown in Figure 7, transformation entry (FixUpEntry) comprises following data.
Type_indicator: type indicator [00: do not have conversion, 01b: handle 10b, 11b: handle with translation data] with the translation data that comprises identification marking
FM_ID_bit_position: the discrimination bit position that the player ID of translation data is set corresponding to identifier
Relative_SPN: translation data is with the package location (unwrapping the bag number of beginning from PMT) that is applied to
Byte_position: the position that translation data is recorded in bag
Overwrite_value: translation data (also comprise identifier translation data is set)
Relative_SPN_2: the package location that second translation data is applied to (unwrapping the bag number of beginning from PMT)
Byte_position_2: the position that translation data is recorded in bag (corresponding to second translation data)
Overwrite_value_2: second translation data (also comprise identifier translation data is set)
Configuration is made up of these data.
Map table is set to such map table, be used to write down the translation data that is used for substituting a part of content-data, and setting is about the positional information of the translation data of content, utilize this map table to carry out the exectorial data conversion treatment program of content configuration data alternate process, carry out data-switching thus.
The information [type_indicator] that is comprised in transformation entry (FixUpEntry) information that contains in the conversion table block shown in Fig. 7 is whether the log-on message that is used to discern map table is following (a) or type identifier (b), just:
(a) be used for destroying the relevant log-on message of translation data that data are converted to correct content-data, or
(b) establish or the identifier of the identifying information that content playback is used is provided with the relevant log-on message of translation data with being used to embed reproduce.
If the scope of the log-on message of map table is the scope that the relevant log-on message of translation data is set with the identifier that is used to embed the identifying information that reproducer or content playback use, the identifying information that content-based reproducer or content playback are used and to be registered by the translation data that selectivity is also used be the table log-on message, just, identifier is provided with translation data and is registered.
Log-on message [Fm_ID_bit_position] is the bit position information of quoting from the identifying information of reproducer of forming by a plurality of or reproduction application, so that determine processing mode.For data-switching is determined processing mode, like this, for example, if for from the reproducer formed by a plurality of or the place value of reproducing the position that the identifying information used quotes be 1, by the identifier that is registered in the map table substituting of translation data execution content configuration data is set, if and for quote the position place value be 0, do not carry out alternative.
If attention can realize wherein with reference to being 0 then carrying out conversion if 1 then do not carry out the configuration of conversion.Perhaps, can realize such configuration, wherein when reference bit be 0 and translation data indication it when being 1 situation, translation data is set to the translation data of separation, and selects translation data and suitably be provided with according to the place value of reference bit.
As shown in Figure 6, encrypted content 306 is set to TS bag stream, and has the bag that is stored in the transformation entry in its part dispersedly, and just, the transformation entry storage package from 307a to 307d is set up.AV stream is that unit is cut apart with the montage, and the transformation entry in the montage unit is recorded in the whole contents dispersedly.
As described in reference Fig. 5, near translation data is recorded in each of transformation entry of the record data that are set to such dispersion.It is identical running through the transformation entry of encrypted content 306 records and the transformation entry that is included in the map table 301 dispersedly, and the messaging device of carrying out content playback is carried out in the following operation one or another: obtain translation data and alternate data from the transformation entry that runs through content record dispersedly, perhaps the transformation entry from map table 301 is obtained translation data and blind codes or data, and this depends on the specification that reproduction (player) is used.
As shown in Figure 6, content is divided into the section (segment) of the scheduled unit of data.The transformation entry that comprises each translation data is calculated or encryption, wherein used for each predetermined different parameter (SP: secret parameter) of content element (segment unit).
The messaging device of carrying out as the data conversion treatment of the data alternate process of execution in content playback sequentially obtains secret parameter (SP1, SP2, SP3...), use the parameter (SPn) obtained the conversion table block that comprises corresponding to the translation data of the position of each section is calculated or encryption, carry out the processing of obtaining translation data thus.
The secret parameter that shows in Fig. 6 (SP) ID determines that table 302 is tables that record should be applied to the guidance information of which content-data position about which secret parameter.The details of this table and the example of use will be described in the back.
Describe based on the alternative object lesson of the data of translation data with reference to Fig. 8 and 9.At first, carry out the example of the alternative processing of data with reference to Fig. 8 description by obtaining the conversion table block configuration data that comprises the translation data that runs through content record dispersedly.
In Fig. 8, (a) configuration that is recorded in the content in the information recording carrier 100 has been described.The configuration data that comprises the conversion table block of transformation entry runs through to d and dispersedly record of the TS bag 307a shown in the figure.
With reference to (b) data of description blind of Fig. 8 for handling sequence.Shown in (b) in Fig. 8 is the processing that the reproduction (player) that is used to carry out main frame is used.(b) in Fig. 8 illustrated the section of belonging to ID=N in the content configuration data, a part of TS bag stream of the content of N+1.
For example, comprise the bag 311 storage conducts of the transformation entry among the section of the being recorded in ID=N and the XOR transformation entry 315 of the XOR result calculated data of secret parameter (SPx).The main frame of carrying out the data alternate process reproduces (player) for the transformation entry 315 and the secret parameter (SPx) 316 of XOR are carried out XORs calculating, thereby obtain transformation entry 317, and obtain translation data and record position information from transformation entry 317, to carry out the alternate process of bag 312a and b at the data alternative site.
The parameter (SPx) that is applied to calculate to obtain transformation entry 317 provides from safety VM320.For example, reproduce (player) application and obtain the secret parameter ID (SP_ID) that is used as corresponding to the secret parameter appointed information of each section, and the secret parameter computation requests of notice that comprises secret parameter ID to safety VM output is as interrupting (INTRP) request, so that obtain the required secret parameter of each section of content (SPn).Safe VM is in response to calculating secret parameter (SPx) corresponding to (SP_ID) from reproducing secret parameter computation requests that (player) use, and provides it to reproductions (retouch and put device) application and (call) in response.
As shown in Figure 8, different sections have different parameters, make parameter (SPx) be applied to the calculating of obtaining transformation entry.For example, each section is set to about 10 seconds content playback time, and reproduces (player) and use per 10 seconds and receive for the different parameter of each section from safety VM, recovers transformation entry, obtain translation data from the transformation entry of having recovered, and carry out data and replace processing.
Fig. 9 has illustrated the example of handling, wherein the map table 303b of a montage of map table block file is acquired the transformation entry of XOR from being used as independently, rather than obtain (carry out according to described content and calculate or encryption) from being recorded in conversion table block the content dispersedly, recover transformation entry, and it is alternative to carry out data to extract translation data from the transformation entry of having recovered.
In Fig. 9, (a) configuration that is recorded in the content in the information recording carrier 100 has been described.The transformation entry dispersed record TS shown in the figure that comprises translation data wraps 307a in d, but in this example, do not use these data, on the contrary, map table 303b as a montage of the configuration data that is recorded in the map table in the information recording carrier independently is used, and the transformation entry of application memory in the map table 303b of this montage, carry out data and substitute.
With reference to (b) data of description alternative sequence among Fig. 9.Processing shown in (b) in Fig. 9 is to reproduce the processing of carrying out in (player) application at main frame.A part that belongs at the content TS of content configuration data stage casing ID=N, N+1 bag stream has been described in (b) in Fig. 9.
For example, carrying out at section ID=N under the situation that data substitute, be acquired corresponding to the transformation entry of the section ID=N among the map table 303b that is included in a montage.But, transformation entry x315 be as with the XOR transformation entry 315 of the XOR result calculated data of secret parameter (SPx), adopt and the identical mode of conversion table block that runs through content record dispersedly.The reproduction (player) of carrying out the main frame of data alternate process is used by 315 pairs of secret parameter of transformation entry (SPx) 316 of XOR are carried out the XORs calculating and is obtained transformation entry 317, obtain the positional information of translation data and record from transformation entry 317, and utilize the bag 312a of data alternative site and b to carry out alternate process.
The parameters calculated (SPx) that is applied to being used for obtaining transformation entry 317 is supplied to from safety VM320 in the mode identical with above-mentioned processing example.For example, reproduce (player) application and obtain the secret parameter ID (SP_ID) of conduct corresponding to the secret parameter provisioning information of each section, and the secret parameter computation requests of notice that comprises secret parameter ID to safety VM output is as interrupting (INTRP) request, so that obtain the required secret parameter of each section of content (SPn).Safe VM is in response to calculating secret parameter (SPx) corresponding to SP_ID from reproducing this secret parameter computation requests that (player) use, and provides it to reproductions (player) application and (call) in response.
As shown in Figure 9, different sections have different parameters, make parameter (SPx) be applied to the calculating that is used to obtain transformation entry.For example, each section is set to about 10 seconds content playback time, and reproduces (player) and use per 10 seconds and receive for the different parameter of each section from safety VM, recovers transformation entry, obtain translation data from the transformation entry of having recovered, and carry out data and replace processing.
Therefore, reproduction (player) application that is used to carry out content playback is that unit receives secret parameter from safety VM and with each section, carry out to calculate, carry out recovery, and obtain the transformation entry of having recovered and carry out data and substitute as the transformation entry of the configuration data of conversion table block.Though notice that above-mentioned processing example is used to explanation and utilizes the situation of XOR (XOR) as the calculating of using secret parameter, the computing that also can use other.Equally, also can wherein use the configuration that secret parameter performs encryption processing etc.
4. reproduce the processing of (player) application and safe VM
Under the situation of carrying out above-mentioned processing, reproduction (player) is applied in sequentially obtains different secret parameter (SP1, SP2, SP3 in the particular segment unit ...), carry out content playback simultaneously, meaned before the transfer point that reproduces section, obtain secret parameter and carry out data alternative at safety VM.In this case, reproduce (player) and use, determine essential SP thus to the secret parameter ID (SP_I) of safety VM notice as the secret parameter appointed information.Secret parameter ID (SP_I) is recorded in previous reference and determines in the table 302 according to secret parameter (SP) ID that Fig. 6 describes.
Reproduce (player) and use and execution to handle, be used for secret parameter (SP) ID is determined that table 302 is set to proper state.Describe by reproducing a series of processing sequences that application and safe VM carry out with reference to Figure 10.
As formerly described with reference to Fig. 1, the transmission of information between reproduction (player) application 150 and safe VM160 or processing request is by handling the sequence execution from the interruption (INTRP) of reproduction (player) application 150 to safe VM160 and from safety VM160 to the response to it (calling) of reproduction (player) application 150.
Processing sequence shown in Figure 10 be explanation from the insertion point of the information recording carrier of memory contents to eject point, reproduce (player) use 150 and safe VM160 the chart of the processing type carried out.
For example, step S11 is the medium initialization process (medium initialization) of the processing carried out when inserting information recording carrier (dish), wherein reproduces (player) and uses the content code file (content code file) of 150 code informations that the storing initial reproduction processes is required and be loaded into its memory inside and begin execution.The producer that the definite reproduction of this content code file (content code file) (player) is used, model or the like.
For example, safe VM160 determines whether the model of obtaining is the model that safety problem took place in the past, if and it is a model that safety problem took place in the past, undertaken about whether the similarly detection of safety problem took place by carrying out content code (content code).For example, some value in the RAM of messaging device or the operation of certain equipment are detected, check whether be in correct status.The trace routine of noting being used for each model may not be included in the content code file of initial handling, and in this case, another essential content code file is accessed.Finished by the initialization process one that safety VM160 carries out, response (calling) then is notified to reproduction (player) and uses 150, and flow process proceeds to next procedure S12.
At step S12, carry out title initialization process (title initialization).Title is used as the appointed information with reproduced content, selected corresponding to the title of certain reproduced content is stipulated to wait based on the user, and the request of title initialization process follows heading message to be output to safe VM160 from reproducing (player) application 150.
Safe VM160 produces map table by collecting corresponding to being used to reproduce the translation data information of necessary all montages of title on the storer of safety VM160, and use 150 to reproduction (player) and notify described table stored position in storer, make that like this reproducing (player) application 150 can obtain described table.And note to carry out during the title initialization and in step S11, being used for the identical safety detection of medium initialization.
Produce the example of the processing of map table with reference to Figure 11 description by collecting corresponding to being used to reproduce the translation data of necessary all montages of title on the storer of safety VM160, it is carried out during the title initialization process.Figure 11 has illustrated the operable memory area of safe VM160 (for example, 2MB).Be stored in here as the content code that is included in the code information in the data conversion treatment program that safe VM160 obtains from information recording carrier.Notice that this content code comprises the map table that will carry out that obfuscation is for example encrypted etc.
Based on input from the title initialization requests of reproducing (player) application 150, safe VM160 carries out the decryption processing of having gathered corresponding to the map table of the translation data information that is used to reproduce necessary all montages of this title according to essential content code, the XOR state (masked state) for example above-mentioned with the state that is subject to processing is stored in it in storer, and the memory location of this storer is notified to reproduction (player) application 150.This notifier processes is as the response (calling) from the title initialization requests (INTRP) of reproducing (player) application 150 is performed.
When the response about title initialization requests (INTRP) (calling) that receives from safety VM160, reproduce the map table storage area copy essential data division of (player) application 150 from the memory area that safety VM160 uses, and be stored to reproduction (player) application 150 memory areas that can use.For example, the secret parameter ID (SP_ID) that had before obtained corresponding to one section secret parameter ID (SP_ID) of content with reference to Fig. 6 to 9 being used for of describing determines that table is extracted and copies and be stored in reproductions (player) application 150 memory areas that can use.
Use execution is obtained translation data from be recorded in the conversion table block the content dispersedly processing if reproduce (player), as formerly described with reference to Fig. 8, obtain secret parameter ID (SP_ID) and determine that table is just enough, but, if player is described as reference Fig. 9, just, do not use the player of the conversion table block of dispersed record in content, then carry out in this copy process of the spendable memory area of player and handle being used for conversion table block that copy and storage secret parameter ID (SP_ID) determine table and memory mapping clauses and subclauses.The XOR conversion table block of describing with reference to Fig. 9 is to copy the conversion table block that 150 spendable memory areas are used in reproduction (player) in this processing to.
Turn back to Figure 10, will continue to describe about reproducing the processing sequence between (player) application 150 and the safe VM160.Step S13 is the processing of calculating (Compute_SP) corresponding to secret parameter (SP), wherein reproduce (player) and use 150 SP computation requests (INTRP) exported to safe VM160, safe VM160 returns to reproductions (player) application 150 with result of calculation (SP) and (calls) in response.If output SP computation requests (INTRP) is given safe VM160, reproduce (player) application 150 and for example determine that from secret parameter ID (SP_ID) table obtains the SP_ID as the SP appointed information, and provide its notice.
Attention is being obtained SP_ID as the SP appointed information with it is notified under the situation of safe VM160, reproduces (player) and uses 150 SP_ID that need accurately to select corresponding to the section of content.The object lesson that SP_ID selects processing will be described in the back.For the processing among each section repeated execution of steps S13.
Processing among the step S14 is to use 150 to safe VM160 Request Processing from reproducing (player), is used for the purpose except secret parameter is calculated.For example, if this is the Request Processing that is used to carry out safety detection, safe VM160 carries out according to request and handles, and (calls) in response to reproducing (player) application 150 notifier processes results.Note reproducing (player) application 150 and the two register that can both write and read of safe VM160, be used to this information translation such as player status registers, register (PSR).
Processing among the step S15 is that the medium when ejection information recording carrier (dish) while, content code (content code) treatment state was recorded in the nonvolatile memory finishes (medium end) processing.This processing makes that the safety detection information in past can be continued to use when insertion dish next time.
As mentioned above, by using 150 to safe VM160 interruption (INTRP) and use 150 response (calling) to reproducing (player) from safety VM160 from reproducing (player), finish reproductions (player) use 150 and safe VM160 between information translation or handle ask and respond.
In this case, safe VM160 does not carry out and all uses the processing of the interruptions (INTRP) of 150 inputs from reproducing (player), carries out some processing and be based on some condition, and refuses some processing.Be described in the mode that safe VM160 accepted or refused Interrupt Process request (INTRP) with reference to Figure 12.
The chart 321 that illustrates has in the drawings illustrated the mode switch in safety VM.Time (t) from left to right.At first, in background mode, secret parameter (SP) computation requests is as being transfused to from the interrupt request of reproducing (player) application.In this, safe VM does not carry out processing, and therefore accepts (acceptance) secret parameter (SP) computation requests, is transformed into the calculation of parameter pattern, and the execution parameter computing.
In addition, if receive interrupt request from reproducing (player) application during this calculation of parameter pattern, first request is accepted, and the interrupt request that continues to receive is rejected (ignoring).
After finishing in the calculation of parameter pattern period, in the application request pattern, carry out corresponding to the processing of first interrupt request that in the calculation of parameter pattern period, receives.Further, secret parameter (SP) computation requests that receives in this period is received (acceptance), and after the application request pattern is finished, be transformed into suitable computation schema, calculation of parameter is handled by this way and is carried out there, in a kind of interruption (INTRP) before, safe VM has the configuration that only keeps to be untreated and to interrupt.Second and the subsequent interrupt request be rejected (ignorance).
5. content playback is handled
Then, with reference to Figure 13 the content playback processing that main frame is carried out is described.Figure 13 begins to show the information recording carrier 330 of storage encryption content from the left side, wherein be provided with information recording carrier 330 so that carry out the driver 340 of data read, and main frame 345, this main frame 345 is connected to driver so that can data communication, and obtains the reproduction that the content that is stored in the information recording carrier 330 and execution be used for carrying out its reproduction processes by driver 340 and use.
Notice that main frame 345 shown in Figure 13 is split into and carry out for example reproduction (player) application block 350 of content-encrypt, decoding, data-switching etc., and 360 of safe VM with safe VM360 of execution secret parameter (SP) computing etc.
Information recording carrier 330 store M KB (media key block) 331, title key file 332, encrypted content 333, map table 335 and data conversion treatment program 334.Main frame 345 keeps being applied to the Device keys 351 that MKB handles.
To main frame 345 shown in Figure 13 obtained and be reproduced in the memory contents in the information recording carrier 330 by driver 340 processing sequence be described.At first, before the memory contents in sense information recording medium 330, main frame 345 and driver 340 are carried out authentication mutually at step S101.Mutually authentication is to be used to confirm that main frame and driver are the equipment of authorizing each other or the processing of application software.Various types of processing can be applied to this mutual authentication processing sequence.As the result of mutual authentication processing, driver 340 and main frame 345 are shared as the session key (Ks) of sharing key.
At step S101, between main frame and driver, carry out authentication mutually and shared session key (Ks) afterwards, at step S102, the reproduction of main frame 345 (player) is used 350 and is obtained the MKB331 that is recorded in the information recording carrier 330 by driver, the Device keys 351 of application memory in storer carried out the processing of MKB331, and obtains the media key (Km) from MKB.
As mentioned above, MKB (media key block) 331 is based on the encryption key block of the tree construction key dispatching system generation that is considered to a kind of broadcast encryption method, and be only to rely on the key information piece that just can obtain media key (Km) based on the processing (deciphering) that is stored in the Device keys (Kd) in the equipment with effective permission, this media key (Km) is to be used for the necessary key of contents decryption.
Then, at step S103, in step S102, handle the media key (Km) obtain and be employed carrying out the deciphering of the title key file 332 that reads from information recording carrier 330, thereby obtain title key (Kt) by MKB.The title key file 332 that is stored in the information recording carrier 330 is the files that comprise by the media key ciphered data, and the title key (Kt) that is used for contents decryption can obtain by the processing of applicating medium key.Notice that for example the decryption processing in step S103 has been used the AES cryptographic algorithm.
Then, the reproduction of main frame 345 (player) is used 350 and is read the encrypted content 333 that is stored in the information recording carrier 330 by driver 340, with the content stores of reading in track buffer 352, in step S104, used the decryption processing of title key (Kt), and obtained this decryption content for the content execution that is stored in the impact damper.
This decryption content is stored in the plaintext TS impact damper 353.(expressly TS) refers to expressly transport stream of deciphering.Now, the decryption content that is stored in the plaintext TS impact damper 353 is the content that comprises above-mentioned destruction data, and it can not be reproduced same as before, and need to carry out predetermined data-switching (by rewriteeing alternate data).
The example of processing shown in Figure 13 is the transformation entry in some bag that obtains in the configuration data that is recorded in encrypted content dispersedly, thereby extracts translation data, and carries out the processing example that data substitute.That is to say, this equates the data conversion treatment of formerly describing with reference to Fig. 8.
The transformation entry of cutting apart in content and writing down is that record is used to carry out translation data (perhaps identifier is provided with translation data) about the alternate process of decryption content, and the data of the record position that is recorded of translation data.
Safe VM361 reads the data conversion treatment program 335 that comprises command code information from information recording carrier 330, and during the content playback or before output is handled and in processing procedure, based on control from button.onrelease 354, and the input of player information 355, produce and export the map table that will be recorded in the information recording carrier 330 off and on and change into expressly required secret parameter (SP1, SP2, the SP3 of map table together with content ...).This processing is carried out off and on.
As mentioned above, secret parameter (SP1, SP2, SP3 ...) be to be used for the encryption CALCULATION OF PARAMETERS, this parameter is changed for the section corresponding to predetermined content data unit, and is specifically, for example, XOR (XOR) operating parameter.Safe VM361 is based on carrying out and handle from reproducing request that (player) use, is used for producing off and on and export being used to recover the transformation entry for example necessary parameter of configuration data (SP1, SP2, the SP3 of the conversion table block of the computing modification by encryption ...).
Reproducing (player) application 350, at step S104, the deciphering that comprises the encrypted content 333 of transformation entry is performed, processing by the demultiplexer of step S105 separates as the transformation entry of the configuration data that is recorded in the map table in the content, and in step S106 under the control of real-time event handling procedure 356 execution list recover and data conversion treatment.Because the control of real-time event handling procedure 356, reproduce (player) use 350 to safety VM361 output corresponding to the secret parameter computation requests of the conversion of section as interrupting (INTRP), receive security parameter (SP1, SP2, SP3 from safety VM361 ...), carry out the deciphering of conversion table block or calculate obtaining expressly conversion table block, and obtain the transformation entry that is included in the conversion table block that has obtained.
Transformation entry record translation data, just,
(a) translation data
(b) identifier is provided with translation data
And the record position appointed information in the content of above-mentioned translation data, and reproduce (player) application 350 and in step S106, carry out the data conversion treatment that is used to be written to assigned address, as handling with content playback or the parallel real-time processing of outside output processing.
For example, if parameter (SP1, SP2, SP3 ...) be XOR (XOR) operating parameter corresponding to the translation data of the unit of predetermined content partial data, the recovery in step S303 is handled as follows:
[conversion table block 1] be [SP1] (XOR)
[conversion table block 2] be [SP2] (XOR)
[conversion table block 3] be [SP3] (XOR)
Or the like.
Its xor operation is handled and is performed, thereby obtains the transformation entry that is included in the map table blocks of data.Attention is in above-mentioned expression formula, and [A] (XOR) [B] refers to the xor operation of A and B.
Therefore, be recorded in the conversion table block that is comprised in the content 333 in the information recording carrier and be divided into record corresponding to the translation data of each content part and the transformation entry of translation data positional information, with secret parameter (SP1, SP2, SP3 ...) carried out storing behind the XOR.These parameters are obtained constantly and are exported by safe VM361.
In the table recovery and data conversion treatment of step S106, secret parameter (SP1, SP2, SP3 have been used from dependence ...) calculating or encryption and the transformation entry recovered is obtained translation data, being included in the translation data that destruction data in the content are used as the normal content configuration data substitutes, and further, the execution data rewrite is handled, wherein identifier is provided with translation data and is substituted by a part of data of content, thus expressly in the TS impact damper 353 data of storage change into data converted.With reference to Figure 14 the overview that this translation data is handled is described.
The encrypted content 333 that is stored in the information recording carrier is temporarily stored in the track buffer 352 in host side.This is the track buffering storage data 401 that show in Figure 14 (1).Decryption processing by host side is carried out the deciphering of storing the encrypted content of data 401 as track buffering, and the decrypted result data are stored in the plaintext TS impact damper 353.This is the decrypted result data 402 that show in Figure 14 (2).
Decrypted result data 402 comprise the destruction data 403 that are not the normal content configuration data.The data conversion treatment unit of main frame is carried out and is handled, and is used for these destructions data 403 are replaced by as the correct translation data 404 of content configuration data.This alternate process is performed as the rewriting of a part of data, for example about being written to the data in the plaintext TS impact damper 353.
In addition, the data conversion treatment that main frame is carried out is not only to be used for being replaced by processing as the translation data of normal content data with destroying data, and be to be used for a part of configuration data of decrypted result data 402 is replaced by the processing that identifier is provided with translation data 405, as shown in figure 14.
Identifier is to make the configuration bit of identifying information can allow content reproducing device or content playback use discernible data, as mentioned above.A concrete example is a configuration data of using the identification information (player ID) of the messaging device that acts on the player of carrying out host application, perhaps the identification marking that produces based on player ID.It is the data that the place value of wherein correct content-data has slightly been changed on the degree that does not influence content playback that identifier is provided with translation data, as mentioned above.
A large amount of identifiers is provided with translation data 405 and is set up in content, and for example the many group identifiers of Collection and analysis are provided with translation data 405 and have determined player ID.Identifier is provided with the configuration bit reformed data in can carrying out the degree of normal reproduction as content that translation data 405 is normal content data, and in these data, position (identification marking configuration bit) is determined to be activated by the mpeg bit stream analysis.
A large amount of translation data 404 shown in Figure 14 and identifier are provided with translation data 405 and are registered in the map table that is stored in the information recording carrier, and in addition, are registered about their writing position information.Shown in Figure 14 (3), the data that will be stored in the plaintext TS impact damper 353 based on the execution of map table canned data data conversion treatment are replaced by through data converted 406.
Subsequently, externally export switched TS (transport stream) by network etc., and externally reproduce in the transcriber.Perhaps, the conversion from transport stream (TS) to element flow (ES) is in the processing execution of step S107 by demultiplexer, and in addition, after decoding processing (step S108), this is reproduced by display loudspeaker.
6. be used to obtain processing corresponding to the SP identifier (SP_ID) of section
As mentioned above, the content section of being divided into that in information recording carrier, writes down, therefore when execution is used for the necessary data conversion treatment of each section, must obtain for all different secret parameter of each section (SPn) from safety VM, and use the conversion table block that the secret parameter of obtaining recovers to comprise transformation entry.
In order to obtain from safety VM for all different secret parameter of each section (SPn), reproduce (player) and use the secret parameter identifier (SP_ID) that obtains corresponding to each section, and the secret parameter identifier (SP_ID) of notifying this to obtain to safety VM.Be about being used to obtain description below corresponding to a plurality of processing examples 1 to 3 of the technology of the correct secret parameter identifier (SP_ID) of each section.
(6.1) be used to obtain processing row 1 corresponding to the SP identifier (SP_ID) of section
Use description to obtain processing row 1 corresponding to the SP identifier (SP_ID) of section.In this processing example, the SPN (source packet number) that is used as the identification information bag (TS bag) of deploy content is determined that at the secret parameter ID that reference Fig. 6 describes (SP_ID) is relevant with the SP identifier in the table by registered in advance.
Carrying out the reproduction (player) of content playback uses at first from being recorded in as the SPN (source packet number) that obtains among the EP figure the clip information of contents reproducing section information corresponding to the content-data that will reproduce.Further, based on the SPN that obtains from EP figure (source packet number), secret parameter ID determines that table is searched, and obtains the SP identifier (SP_ID) that is provided with corresponding to the SPN that has obtained (source packet number).
This reproduction (player) is used to safety VM notice and is determined the SP identifier (SP_ID) that table obtains from secret parameter ID, and carries out secret parameter computation requests (INTRP).
Be detailed description below with reference to this processing example of accompanying drawing.Figure 15 describes by carrying out content playback just to reproduce the chart that content playback that content reproduction unit that (player) use carries out is handled.At first, in content playback, reproduce (player) and use the clip information of obtaining as the reproduction of content partial information.
For example, the clip information that illustrates in Figure 15 A is selected.Clip information is the EP figure of the Packet Identifier information of content, is set to multi-group data.Each EP figure comprises that for example, with the relevant package informatin of I picture in the GOP (image sets), this GOP is as the decoded data units of the mpeg data of the coded data that flows as configuration AV, and this AV stream is the reproduction content shown in Figure 15 B.
A SPN (source packet number) is comprised in the package informatin of the I picture that is included among the EP figure.For example, shown in Figure 15 C, each GOP (image sets) is configured to an I picture 411 and a plurality of P and B picture.This I picture 411 is the coded datas that are set to the reference picture in the GOP, and P and B picture are to use the image information of I image information as reference information.
The bag of noting being set to destroying data is a unit with the TS bag, and the TS bag is set up the configuration data of this I picture 411 or P and B picture, as shown in the figure.That is to say that each I picture or P and B picture are stored in a large amount of TS bags dispersedly.
For example, being provided with in the TS bag of forming the I picture among the GOP one means as the I picture of the reference of MPEG reference data destroyed as revising data (destruction data), therefore use the I picture can not be resumed as the P picture and the B picture of the reference of (mpeg decode) information of recovery, therefore, active data destroys and can be performed.
Be used for reproducing reproduction of content (player) application and rely on data-switching to obtain the translation data that is recorded in map table, and it is alternative to carry out data.Notice that as mentioned above, data substitute that not only is used for will be with destroying the translation data that data substitute, and relate to identifier translation data is set.
As mentioned above, translation data is registered in the map table, but carry out calculating or encryption, and thereby be used to reproduce reproduction of content (player) and use and to obtain secret parameter from safety VM corresponding to each section for the different secret parameter of each section application (SP).
Utilize this processing example, reproduce (player) application and obtain SPN (source packet number) from being registered in as the EP figure the clip information of contents reproducing section information, ID determines table based on the SPN that obtains (source packet number) search secret parameter, and obtains corresponding to the SP identifier (SP_ID) that will carry out the SPN (source packet number) that reproduces to it.
The details of EP figure at first, is described with reference to Figure 16 and 17.As shown in figure 16, EP figure (EP_map) 412 is included in the data in the clip information file (clip information).Detection based on the I picture position of EP figure is described with reference to Figure 17.Figure 17 A shows montage AV stream, and each rectangle is indicated 192 potential source bags.Each source bag is set to have a markers, and has stipulated the reproduction processes time.
Figure 17 B has illustrated the detailed configuration of source bag No. (x1).Each source bag is made of with transmitting to wrap the TP_extra header, and transmits bag by polytype header information, and the formations such as data that are used as the I picture H of MPEG2 solid data.
Comprise above-mentioned EP figure in the clip information shown in Figure 17 C.As shown in the figure, EP figure comprises [PTS_EP start], [SPN_EP start] and [I_end_position_offset] various data.The meaning of each data is as follows:
PTS_EP start: corresponding to the markers (show time scale) of the source bag that comprises sequence header.
SPN_EP start: the header address that comprises the source bag of sequence header.
I_end_position_offset: wrap from the side-play amount of the source bag that comprises sequence header in the source that comprises the termination of I picture.
Figure 17 D has illustrated the relation of these data.
That is to say, shown in Figure 17 B, stipulated to be included in the configuration of the data in the bag of source, and dependence is obtained data [PTS_EP start], [SPN_EP start] and [I_end_position_offset] from EP figure, shown in Figure 17 C, can obtain the position of the I picture in the bag of source based on these data.
For this processing example, the reproduction (player) that is used to carry out content playback is used from EP figure and is obtained SPN (source packet number) corresponding to the data of the content that will reproduce, this EP figure is registered in the clip information as contents reproducing section information, search for secret parameter ID based on the SPN that has obtained (source packet number) by determining table, and obtain SP identifier (SP_ID) corresponding to the SPN that will reproduce (source packet number).
Figure 18 shows the process flow diagram of the example of the data configuration of explaining the definite table of secret parameter (SP) ID, and uses the SP computation requests processing sequence of carrying out for safety VM by reproducing (player).
Each step in the process flow diagram shown in Figure 18 will be described.At first, at step S201, the clip information of obtaining as the reproduction of content partial information that will reproduce is used in the reproduction (player) that is used for play content, and further, at step S201, obtains the EP figure that is included in the clip information.In addition, at step S203, from the EP figure that this obtains, obtain the SPN that reproduces the source packet number of position as indication.
For example, suppose the source packet number: SPN=9451000 is acquired.Then, at step S204, quote SP_ID and determine table.Notice that this SP_ID determines that table is the configuration data that is stored in formerly the map table in the information recording carrier of describing with reference to Fig. 6, and,, be copied into and store into to reproduce and use in the memory area that can use with reference to as described in Figure 10 and 11 as formerly.
As shown in figure 18, SP_ID determines that table is registered as the correlation table between SP_ID and the source packet number (SPN).This SP_ID that illustrates in the drawings determines that table is corresponding to the definite table of the SP_ID of montage.Be equal to first packet number in each section of forming this content corresponding to the source packet number (SPN) of each SP_ID registration.
SP_ID shown in the figure determines in the example of table that for example the section of the content of SP_ID=124 correspondence is a packet number (SPN) 9362153 to 9444310, and the section of the content of SP_ID=125 correspondence is a packet number (SPN) from 9444311 to 9528254.
Suppose that in step S203 source packet number: SPN=9451000 has been obtained in the reproduction application EP figure from clip information.In step S204, reproduce to use and determine that table obtains the SP_ID corresponding to source packet number: SPN=9451000 from SP_ID.
Determine that for the SP_ID shown in Figure 18 the example of table, source packet number: SPN=9451000 belong to packet number (SPN)=9444311 corresponding to SP_ID=125 to 9528254.Therefore, the secret parameter ID corresponding to source packet number: SPN=9451000 is SP_ID=125.At step S205, corresponding to the secret parameter ID[SP_ID=125 of source packet number: SPN=9451000] obtain by this way.
At step S206, reproduce (player) and use the secret parameter ID[SP_ID=125 that notifies this to obtain to safety VM], carry out secret parameter (SP) computation requests (INTRP), and obtain secret parameter (SP) corresponding to section from safety VM corresponding to section.
With reference to Figure 19 and 20 map table and the definite configuration example of showing of SP_ID that this processing example can be used described.Figure 19 is the chart of the configuration of explanation map table.Map table comprises following data.The montage number (=Nclip): the number of the montage of in title, using.
FixUpTableBody_StartAddress: the address of walking to begin of the map table main body in the map table.
SPChangePositionTable (): SP_ID determines table.
FixUpTableBody (): map table main body.
For this processing example, this SP_ID determines that table is the table that has wherein write down the packet number that will change secret parameter (SP), as shown in figure 18.That is to say that the head of each section (head) packet number is recorded corresponding to each SP_ID.
Figure 20 illustrates the data configuration example that the SP_ID that is included in the map table determines table (SPChangePositionTable).This SP_ID determines that table is set to wherein register the table that is used as the source packet number (SPN) of Packet Identifier for each montage, and this Packet Identifier changes part corresponding to the SP that is included in each montage.This SP_ID determines that table comprises following data.
Clip_ID: montage ID
The number of SP (=NSP): the number (SP_segment) of section
SP_segment_START_SPN: at the source packet number (SPN) of head corresponding to the section (SP_segment) of SP_ID.
Reproduce to use the head source packet number (SPN) that can obtain, and obtain SP_ID corresponding to SPN that will be reproduced corresponding to the section (SP_segment) of SP_ID.
Figure 21 has illustrated the example of the data configuration of the map table main body (FixUpTableBody) that is included in the map table.This map table main body has the following column data that is used for each montage.
Clip_ID: the identifier of montage (ID) (in the situation of Clip_ID=1234) corresponding to 01234.clpi, 01234.m2ts clip files
The number of SP (=NSP): the number of the section (SP_segment) in montage
The data of the start address of FUT piece () have also been stored for each SP_ID: the start address of conversion table block (FUT piece)
FUT piece: conversion table block
As shown in FIG., each conversion table block is provided so that all transformation entry (SP_segment) that comprise corresponding to a section.
With reference to the example of Figure 22 description about the data configuration of a conversion table block.The conversion table block is that storage comprises the transformation entry of the translation data that is used as true alternate data and the table of writing position information, as previously mentioned.This conversion table block storage is column data down.
The number of FixUpEntry in this piece (=NFixup): comprise number corresponding to the flowchart (PMT) of the transform data (FxUp data) in the section (SP_segment) of this conversion table block (FUT piece).
In addition, comprise column data down for each transformation entry.
The basic SPN of FixUpEntry: have the source packet number (SPN) of the program map table (PMT) of transformation entry (FixUpEntry) structure, first in its section of being (SP_segment).
FixUpEntry (): transformation entry; The match information of the transformation entry (FixUpEntry) in program map table (PMT) with transformation entry (FixUpEntry) structure, first in its section of being (SP_segment).
Notice that transformation entry (FixUpEntry) is the data of wherein having registered as the record position information of the translation data that truly substitutes object and this translation data, as formerly with reference to as described in Fig. 7, wherein, reproduce (player) application and extract the record position information of translation data together with translation data from transformation entry, rewrite translation data at assigned address, carry out data-switching thus.
Next, utilize the alternative content playback of data of translation data to handle sequence with reference to the flow chart description of Figure 23 about comprising by obtaining the different secret parameter (SP) that are used for each section.At first, at step S401, reproduce (player) and use definite title that will reproduce, and send a title initialization command and give safe VM.At step S402, safe VM carries out the title initialization process, and carries out the generation processing corresponding to the map table (FixUpTable) of title.This is the processing of formerly describing with reference to Figure 10 and 11, and corresponding to the processing among the step S12 in the sequence shown in Figure 10.
At step S403, reproduce (player) application and obtain essential information from map table (FixUpTable).This is the processing of formerly describing with reference to Figure 11, and is performed as the processing that is used for the necessary information from the map table of the storage area that is stored in safe VM is copied to the operable storage area of reproductions (player) application.
Carry out under the situation that the reproduction (player) of data-switching uses being compound in transformation entry FUT piece on the TS (transport stream) of content by extraction, just, under the situation that the reproduction (player) of carrying out the processing of formerly describing with reference to Fig. 8 is used, only secret parameter (SP) ID determines that table is copied into its storage area.On the other hand, do not using the FUT piece that is compound on the content TS (transport stream) but under the situation that the reproduction (player) of translation data in the conversion table block of service recorder in the map table file is used, just, under the situation of reproduction (player) application (FUT prestrain type player) of carrying out the processing of formerly describing with reference to Fig. 9, whole conversion table block is copied into its storage area.
Then, at step S404, reproduce (player) and use the clip information of obtaining corresponding to title, and the EP figure from be included in clip information obtains corresponding to source packet number (SPN) value of reproducing starting point.
Then, at step S405, based on the SPN that obtains from EP figure, the secret parameter ID of starting point (SP_ID) determines that from SP_ID table (SPChangePositionTable ()) is definite.This processing is the processing of describing with reference to Figure 18.
Then, at step S406, the notified secret parameter ID that has obtained of safe VM (SP_ID), and secret parameter (SP) value computation requests is output.This processing is equal to the processing of describing with reference to Figure 10 at step S13.
Then, at step S407, reproduce (player) and use secret parameter (SP) value of obtaining corresponding to the section of calculating by safety VM, carry out the recovery of conversion table block based on secret parameter (SP), obtain the transformation entry that is stored in the conversion table block that has recovered,, carry out data conversion treatment so that utilize data in the section of translation data replacement based on being recorded in translation data in the transformation entry and its record position, and, carry out decoding and reproduction processes at step S408.
In addition, proceeding under the situation of next section, at step S410, the next SPN that reproduces section obtains from EP figure, and processing begins to be performed from step S405.That is to say, based on the SPN that obtains from EP figure, SP_ID corresponding to this section determines that from SP_ID table (SPChangePositionTable ()) obtains, and this SP_ID that obtains is notified to safe VM, SP value corresponding to this section is acquired, recover the conversion table block based on the SP value of having obtained, obtain transformation entry from the conversion table block that has recovered, extract translation data and record position from transformation entry, carry out data processing with timely each section, wherein the data in the section of content are converted data and substitute.
According to this processing, carry out the processing that different secret parameter (SP) is applied to each section.
Then, be described in the processing sequence under the situation of carrying out special reproduction processes with reference to Figure 24, for example random access.Notice that processing shown in Figure 24 has only illustrated the processing sequence of title initialization process.That is to say that this shows treatment step S401 the finishing to S403 in the processing flow chart shown in Figure 23.
At first, at step S421, reproduce (player) application responds in the special reproduction processes request for example random access obtain EP figure from clip information, and obtain corresponding to source packet number (SPN) value of reproducing initial point from the EP figure that has obtained.
Then, at step S422,, determine to determine in the table (SPChangePositionTable ()) the secret parameter ID (SP_ID) of starting point from SP_ID based on the SPN that obtains from EP figure.This processing is the processing with reference to the processing of Figure 18 description.
Then, at step S423, the notified secret parameter ID that has obtained of safe VM (SP_ID), and secret parameter (SP) computation requests is output.This processing is equal to the processing in step S13 description with reference to Figure 10.
Then, at step S424, reproduce (player) and use secret parameter (SP) value of obtaining corresponding to the section of calculating by safety VM, carry out the recovery of conversion table block based on secret parameter (SP), obtain the transformation entry that to store up in recovering the conversion table block,, carry out data conversion treatment so that utilize data in the section of translation data replacement based on being recorded in translation data in the transformation entry and its record position, and, carry out decoding and reduce processing at step S425.
In addition, proceeding under the situation of next section, at step S430, the next SPN that reproduces section obtains from EP figure, and processing begins to be performed from step S422.That is to say, based on the SPN that obtains from EP figure, SP_ID corresponding to this section determines that from SP_ID table (SPChangePositionTable ()) obtains, and this SP_ID that obtains is notified to safe VM, SP value corresponding to this section is acquired, recover the conversion table block based on the SP value of having obtained, obtain transformation entry from the conversion table block that has recovered, translation data and record position are extracted from transformation entry, and carry out data processing for each section, wherein the data in the section of content are converted data and substitute.
As mentioned above, this processing example is configured to make the reproduction (player) be used for carrying out content playback to use at first from being recorded in EP figure as the clip information of contents reproducing section information to obtain SPN (source packet number) corresponding to the section of the content-data that will reproduce, and sequentially search for secret parameter ID based on the SPN that obtains (source packet number) and determine table, obtain the SP identifier (SP_ID) that is provided with corresponding to the SPN that has obtained (source packet number), the SP identifier (SP_ID) of notifying this to obtain to safety VM, and execution secret parameter computation requests (INTRP), therefore sequentially can correctly receive, and can carry out content playback and carry out accurate data-switching simultaneously from safety VM corresponding to the secret parameter (SP) of each section.
(6.2) be used to obtain processing example 2 corresponding to the SP identifier (SP_ID) of section
Use description to obtain processing row 2 corresponding to the SP identifier (SP_ID) of section.In this processing example, secret parameter ID determines that table has the configuration of the related data between storage secret parameter ID (SP_ID) and the EP figure registration table identifying information (EP figure registration Table I D).
Carrying out the reproduction (player) of content playback uses at first from obtain EP figure corresponding to the clip information of the content-data that will reproduce, and, determine that from secret parameter ID table obtains the SP identifier (SP_ID) that is provided with corresponding to EP figure registration Table I D based on this EP figure registration table identifying information (EP figure registration Table I D) corresponding to EP figure.
This reproduction (player) is used to safety VM notice and is determined the SP identifier (SP_ID) that table obtains from secret parameter ID, and carries out secret parameter computation requests (INTRP).
Be with reference to the detailed description of accompanying drawing below to this processing example.Figure 25 is the chart of example that the SP_ID that uses in this processings example of explanation determines to show the data configuration of [SPChangePositionTable].In this processing example, the configuration of map table with utilize the processing example of formerly describing 1 in Figure 19 shown in configuration identical.Only SP_ID determines that the data configuration of table [SPChangePositionTable] is different from processing example 1.
SP_ID shown in Figure 25 determines the related data between table storage EP figure registration Table I D and the secret parameter ID (SP_ID).Particularly, this has stored the EP figure registration Table I D of EP figure and the related data between the secret parameter ID (SP_ID), and this EP figure has comprised the head package informatin as the section (SP_segment) of content configuration data.This SP_ID determines that table comprises following data.
Clip_ID: montage ID
The number of SP (=NSP): the number (SP_segment) of section
SP_segment_start_EP_map_id: specify EP figure registration Table I D (EP_map_id) at head, and SP_ID can utilize this value to register Table I D (EP_map_id) from the EP figure corresponding to the source packet number (SPN) that will reproduce to obtain corresponding to the section (SP_segment) of SP_ID.
Reproduce to use and to obtain the registration table ID that comprises corresponding to the EP figure of the head source bag of the section (SP_segment) of SP_ID, and determine that from SP_ID shown in Figure 25 table obtains the SP_ID corresponding to section based on EP figure registration Table I D.
With reference to the flow chart description among Figure 26 about comprise by use the SP_ID shown in Figure 25 determine table obtain the different secret parameter (SP) that are used for each section thus utilize translation data to carry out the content playback that data substitute and handle sequence.
At first, at step S501, reproduce (player) and use definite title that will reproduce, and send a title initialization command and give safe VM.At step S502, safe VM carries out the title initialization process, and carries out the generation processing corresponding to the map table (FixUpTable) of title.This is the processing of formerly describing with reference to Figure 10 and 11, and corresponding to the processing among the step S12 in the sequence chart shown in Figure 10.
At step S503, reproduce (player) application and obtain essential information from map table (FixUpTable).This is the processing of formerly describing with reference to Figure 11, and is performed as the processing that is used for the necessary information from the map table of the storage area that is stored in safe VM is copied to the operable storage area of reproductions (player) application.
Under the situation that the reproduction (player) of carrying out data-switching by the extraction of the FUT piece from the TS (transport stream) that is compound in content transformation entry is used, just, under the situation that the reproduction (player) of carrying out the processing of formerly describing with reference to Fig. 8 is used, only secret parameter (SP) ID determines that table is copied into its storage area.On the other hand, do not using the FUT piece that is compound on the content TS (transport stream) but under the situation that the reproduction (player) of translation data in the conversion table block of service recorder in the map table file is used, just, under the situation of reproduction (player) application (FUT prestrain type player) of carrying out the processing of formerly describing with reference to Fig. 9, whole map table is copied into its storage area.
Then,, reproduce (player) and use the clip information of obtaining corresponding to title, determine to be included in the EP figure in the clip information, and obtain the registration table identifying information of the value of EP figure registration Table I D as fixed EP figure at step S504.
Then, at step S505, based on EP figure registration Table I D, the secret parameter ID of starting point (SP_ID) determines that from SP_ID table (SPChangePositionTable ()) is definite.This SP_ID shown in Figure 25 determines that table is used, the related data between the registration table identifying information of this definite table storage secret parameter ID (SP_ID) and EP figure (EP figure registration Table I D).
Then, at step S506, the notified secret parameter ID that has obtained of safe VM (SP_ID), and secret parameter (SP) value computation requests is output.This processing is equal to the processing of describing with reference to Figure 10 at step S13.
Then, at step S507, reproduce (player) and use secret parameter (SP) value of obtaining corresponding to the section of calculating by safety VM, carry out the recovery of conversion table block based on this secret parameter (SP), obtain and be stored in the transformation entry of recovering in the conversion table block,, carry out data conversion treatment so that utilize data in the section of translation data replacement based on being recorded in translation data in the transformation entry and its record position, and, carry out decoding and reproduction processes at step S508.
In addition, proceeding under the situation of next section, at step S510, the EP figure registration Table I D that is included in the EP figure of the next information of reproducing first bag in the section is acquired, and handles and begin to be performed from step S505.That is to say, based on this EP that obtains figure registration Table I D, the SP_ID relevant with EP figure registration Table I D determines that from SP_ID table (SPChangePositionTable ()) obtains, and this SP_ID that obtains is notified to safe VM, SP value corresponding to this section is acquired, recover the conversion table block based on the SP value of having obtained, obtain transformation entry from the conversion table block that has recovered, extract translation data and record position from transformation entry, and carry out data conversion treatment for each section, wherein the data in the section of content are converted data and substitute.
According to this processing, the processing that different secret parameter (SP) is applied to each section is performed.
Then, be described in the processing sequence of carrying out under for example random-access situation of special reproduction processes with reference to Figure 27.Notice that processing shown in Figure 27 has only illustrated the processing sequence of title initialization process.That is to say that this shows treatment step S501 the finishing to S503 in the processing flow chart shown in Figure 26.
At first, at step S521, reproduce (player) application responds in the special reproduction processes request for example random access determine the EP figure that uses by clip information and the value (EP figure registration Table I D) of obtaining the registration table identifier of fixed EP figure.
Then, at step S522, based on the EP figure registration Table I D that has obtained, the secret parameter ID (SP_ID) that registers the starting point place of Table I D corresponding to EP figure determines to determine the table (SPChangePositionTable ()) from SP_ID.
Then, at step S523, the notified secret parameter ID that has obtained of safe VM (SP_ID), and secret parameter (SP) computation requests is output.This processing is equal to the processing of describing with reference to Figure 10 at step S13.
Then, at step S524, reproduce (player) and use secret parameter (SP) value of obtaining corresponding to the section of calculating by safety VM, carry out the recovery of conversion table block based on secret parameter (SP), obtain the transformation entry that is stored in the conversion table block that has recovered,, carry out data conversion treatment so that utilize data in the section of translation data replacement based on being recorded in translation data in the transformation entry and its record position, and, carry out decoding and reproduction processes at step S525.
In addition, proceeding under the situation of next section, at step S530, the EP figure registration Table I D that comprises the EP figure of the next information of reproducing first bag in the section is acquired, and handles and begin to be performed from step S522.That is to say, based on this EP that obtains figure registration Table I D, the SP_ID relevant with EP figure registration Table I D determines that from SP_ID table (SPChangePositionTable ()) obtains, and this SP_ID that obtains is notified to safe VM, SP value corresponding to this section is acquired, recover the conversion table block based on the SP value of having obtained, obtain transformation entry from the conversion table block that has recovered, extract translation data and record position from this transformation entry, and carry out data conversion treatment for each section, wherein the data in the section of content are converted data and substitute.
As mentioned above, the reproduction (player) that this processing example is configured to be used for like this carrying out content playback is used at first from the EP figure that is recorded in as the clip information of contents reproducing section information and is determined the EP figure of storage corresponding to the package informatin of the reference position of the section of the content-data that will reproduce, and search for secret parameter ID based on the registration table identifier (EP figure registration Table I D) of EP figure and determine table, the SP identifier (SP_ID) that obtains corresponding to EP figure registration Table I D is provided with, notify safe VM the SP identifier (SP_ID) that this has obtained, and execution secret parameter computation requests (INTRP), therefore sequentially can correctly receive, and can carry out content playback and carry out accurate data and replace from safety VM corresponding to the secret parameter (SP) of each section.
(63) be used to obtain processing example 3 corresponding to the SP identifier (SP_ID) of section
Then, will the processing example 3 that be used to obtain corresponding to the SP identifier (SP_ID) of section be described more.In this processing example, for the segment base that content is provided with is cut apart in the number of the EP figure registration table of putting down in writing in advance.That is to say that the content part zone with the entry point of specifying the reproduction reference position that equals N EP figure registration table is one section.N is 1 or bigger integer.
Carry out reproduction (player) application of content playback and scheme, and, sequentially obtain and reproduce the TS bag of deploy content based on this EP figure from obtain EP corresponding to the clip information of the content-data that will reproduce.With reference to as described in Figure 15, EP figure is set for each GOP as formerly, reproduces (player application) simultaneously and carries out EP figure that obtains in the clip information and the processing of extracting and reproducing bag.
For this processing example, reproduce (player) application and adopt EP figure registration Table I D to calculate secret parameter ID (SP_ID) corresponding to employed EP figure.Perhaps, reproduce (player) and use the number that calculates employed EP figure registration table, and when reaching the number (N) of the EP figure registration table of forming one section (corresponding to N EP figure registration table), determine the segment occurred conversion, and the therefore capable processing that is used to change the secret parameter (SP) of the recovery that will be applied to the conversion table block.
When reaching the number (N) of the EP figure registration table of forming one section (corresponding to N EP figure registration table), reproduce the SP identifier (SP_ID) that (phonograph player) notifies to application order safe VM to increase, and carry out secret parameter computation requests (INTRP).
Describe this processing example in detail now with reference to figure.Figure 28 shows (a) content configuration, and the EP figure configuration data of (b) using in this processing example.As shown in (a) content configuration, content is divided into GOP, and the information relevant with I picture among each GOP is recorded in separately the EP figure registration table.As at the EP figure configuration data as shown in Figure 28 (b), a plurality of EP figure registration tablies are recorded among the EP figure, has SPN (source packet number) as address information, this information is about being registered in the information of the I picture in each EP figure registration table, and PTS (presenting markers) is recorded in the related subject.
Therefore, EP figure has the data configuration that is stored in a plurality of EP figure registration tablies in the single file.The table that is registered among the EP figure has the table numbering, and these are identified as EP figure registration Table I D.
For this processing example, section is set up the data area as N EP figure registration table.At the example shown in Figure 28 is the wherein setting of N=5, and therefore 5 EP figure registration tablies are set to a section.In the content shown in Figure 28 A, GOP0 is to GOP4, and EP figure registration table 0 to EP figure registration table 4 is cut apart as one section, and the GOP5 of back that is to say that to GOP9 EP figure registration table 5 is cut apart as one section to EP figure registration table 9.Same, 5 GOP (=5 EP figure registration tablies) are set to one section.
In this case, shown in Figure 28 B, be applied to be set to [0] corresponding to the identifier (SP_ID) of secret parameter of the section of EP figure registration table 0 to 4, and then,
EP figure registration table 5 to 9:SP_ID=1,
EP figure registration table 10 to 14:SP_ID=2,
EP figure registration table 14 to 19:SP_ID=3,
And like this, for per 5 EP figure registration tablies, secret parameter identifier (SP_ID) adds 1.
Reproduce reproduction of content (player) and use the EP figure registration Table I D that adopts corresponding to the EP figure registration table that will be used, and calculate secret parameter ID (SP_ID).Secret parameter ID (SP_ID) determines by the integral part of extraction 0 or bigger number, calculates according to following equation.
SP_ID=(EP figure registration Table I D)/N
In above-mentioned equation, n equals the number of an EP figure registration table in the section, and in the example of Figure 28, this is calculated as
EP figure registration table 0 to 4:SP_ID=0,
EP figure registration table 5 to 9:SP_ID=1,
EP figure registration table 10 to 14:SP_ID=2,
Or the like.
Perhaps, can realize such configuration, wherein, the above-mentioned equation of alternate application, the number of the EP figure registration table that reproduction (player) application count will be used, determine that when reaching the number (N) of the EP figure registration table of forming one section (corresponding to N EP figure registration table) the section conversion will take place, and carry out the processing of the secret parameter (SP) that is used to change the recovery that will be applied to the conversion table block.
Utilize the example of the setting shown in Figure 28, therefore N=5 determines for per 5 EP figure registration tablies segment occurred to be changed, therefore for per 5 EP figure, SP_ID adds 1, and this SP_ID is determined, the SP_ID that should determine is exported to safe VM, and is acquired corresponding to the secret parameter of section.Self-evident section can be determined at the integer unit except N=5, but considers the processing time of reproducer, expects that the unit of a plurality of EP figure registration table clause points can be determined.
For this processing example, can obtain the different SP_ID that is used for each section based on above-mentioned expression formula or EP figure registration table counting, therefore the secret parameter ID that there is no need to use the source packet number or be used for obtaining based on EP figure registration Table I D secret parameter ID determines table, as the processing example of formerly describing 1 and 2.
Under the situation of using this processings example, content playback is handled sequence and is comprised for the obtaining of all different secret parameter of each section (SP), and utilizes the data of translation data alternative, is described with reference to the process flow diagram shown in Figure 29.
At first, at step S601, reproduce (player) and use definite title that will reproduce, and send a title initialization command and give safe VM.At step S602, safe VM carries out the title initialization process, and carries out the generation processing corresponding to the map table (FixUpTable) of title.This is the processing of formerly describing with reference to Figure 10 and 11, and corresponding to the processing among the step S12 in the sequence shown in Figure 10.
At step S603, reproduce (player) application and obtain essential information from map table (FixUpTable).This is the processing of formerly describing with reference to Figure 11, and is performed as the processing that is used for the necessary information from the map table of the storage area that is stored in safe VM is copied to the operable storage area of reproductions (player) application.
Carry out under the situation that the reproduction (player) of data-switching uses being compound in transformation entry FUT piece on the TS (transport stream) of content by extraction, just, under the situation that the reproduction (player) of carrying out the processing of formerly describing with reference to Fig. 8 is used, only secret parameter (SP) ID determines that table is copied into its storage area.On the other hand, do not using the FUT piece that accords with on the content TS (transport stream) but under the situation that the reproduction (player) of translation data in the conversion table block of service recorder in the map table file is used, just, under the situation of reproduction (player) application (FUT prestrain type player) of carrying out the processing of formerly describing with reference to Fig. 9, whole map table is copied into its storage area.
Then,, reproduce (player) and use the clip information of obtaining corresponding to title, determine to be included in the EP figure in the clip information, and obtain the registration table identifying information of the value of EP figure registration Table I D as fixed EP figure at step S604.
Then, at step S605, this SP_ID is calculated based on EP figure registration Table I D.For example, utilize the number N that is included in an EP figure registration table in the section, SP_ID calculates by following formula:
SP_ID=(EP figure registration Table I D)/N.
Then, at step S606, the notified secret parameter ID that has obtained of safe VM (SP_ID), and secret parameter (SP) value computation requests is output.This processing is equal to the processing of describing with reference to Figure 10 at step S13.
Then, at step S607, reproduce (player) and use secret parameter (SP) value of obtaining corresponding to the section of calculating by safety VM, carry out the recovery of conversion table block based on secret parameter (SP), obtain and be stored in the transformation entry of recovering in the conversion table block,, carry out data conversion treatment so that utilize data in the section of translation data replacement based on being recorded in translation data in the transformation entry and its record position, and, carry out decoding and reproduction processes at step S608.
In addition, proceeding under the situation of next section, at step S610, the EP figure registration Table I D that comprises the EP figure of the next information of reproducing first bag in the section is acquired, and handles and begin to be performed from step S605.That is to say, based on this EP that obtains figure registration Table I D, SP_ID is calculated, the SP_ID of this acquisition is notified to safe VM, is acquired corresponding to the SP value of this section, recovers the conversion table block based on the SP value of having obtained, obtain transformation entry from the conversion table block that has recovered, translation data and record position are extracted from transformation entry, and carry out data conversion treatment for each section, and wherein the data in the section of content are converted data and substitute.
According to this processing, the processing that different secret parameter (SP) is applied to each section is performed.Note as previously mentioned, can realize that wherein the quantity of the registration table of EP figure is counted obtaining SP_ID, rather than the configuration of obtaining SP_ID based on the equation of using EP figure registration Table I D.
Then, be described in the processing sequence of carrying out under for example random-access situation of special reproduction processes with reference to Figure 30.Notice that processing shown in Figure 30 has only illustrated the processing sequence of title initialization process.That is to say that this shows treatment step S601 the finishing to S603 in the processing flow chart shown in Figure 29.
At first, at step S621, reproduce (player) application responds in the special reproduction processes request for example random access determine the EP figure registration table that uses by clip information and the value (EP figure registration Table I D) of obtaining the registration table identifier of EP figure.
Then, at step S622, based on the EP figure registration Table I D that has obtained, SP_ID calculates by equation SP_ID=(EP figure registration Table I D)/N.
Then, at step S623, the notified secret parameter ID that has obtained of safe VM (SP_ID), and secret parameter (SP) computation requests is output.This processing is equal to the processing of describing with reference to Figure 10 at step S13.
Then, at step S624, reproduce (player) and use secret parameter (SP) value of obtaining corresponding to the section of calculating by safety VM, carry out the recovery of conversion table block based on this secret parameter (SP), obtain and be stored in the transformation entry of recovering in the conversion table block,, carry out data conversion treatment so that utilize data in the section of translation data replacement based on being recorded in translation data in the transformation entry and its record position, and, carry out decoding and reduce processing at step S625.
In addition, proceeding under the situation of next section, at step S630, the EP figure registration Table I D that comprises the EP figure of the next information of reproducing first bag in the section is acquired, and handles and begin to be performed from step S622.That is to say, based on this EP that obtains figure registration Table I D, calculate SP_ID, the SP_ID of this calculating is secret to be notified to safe VM, is acquired corresponding to the SP value of this section, recovers the conversion table block based on the SP value of having obtained, obtain transformation entry from the conversion table block that has recovered, translation data and record position are extracted from transformation entry, and carry out data processing for each section, and wherein the data in the section of content are converted data and substitute.Notice that this example also can realize such configuration, wherein the quantity of EP figure registration table is counted obtaining SP_ID, rather than uses this equation.
As mentioned above, this processing example is configured to make the reproduction (player) that is used for carrying out content playback to use at first from being recorded in the definite EP figure registration table corresponding to the content-data that will more reproduce of EP figure as the clip information of contents reproducing section information, and obtain secret parameter ID (SP_ID) based on the registration table identifier of EP figure (EP figure registration Table I D), number by applicable equations or counting EP figure registration table, notify safe VM the SP identifier (SP_ID) that this has obtained, and execution secret parameter computation requests (INTRP), thereby obtain SP identifier (SP_ID) and need not to use special parameter ID and determine table, therefore the secret parameter (SP) corresponding to each section can correctly receive from safety VM, and can carry out content playback and carry out accurate data-switching simultaneously.
7. the configuration of messaging device
Then, be described in the example of the hardware configuration of the messaging device of carrying out above-mentioned processing among reproduction (player) application and the safe VM with reference to Figure 31.Messaging device 800 has CPU809, execution is according to the data processing of polytype program, comprise OS, content playback and records application program, and be used for recognizing alternately the program of levying processing, handle and follow reproduction of content, for example, above-mentioned data conversion treatment or the like, ROM808 is as program, the storage area of parameter etc., storer 810, and the I/O I/F802 that is used for the I/O of digital signal, I/O I/F804 has and is used for the A/D of I/O mould with signal, D/A converter 805, be used to carry out the MPEGCODEC803 that the Code And Decode of mpeg data is handled, be used to carry out the TS-PS processing unit 806 that TS (transport stream)-PS (program flow) handles, decryption processing unit 807, be used to carry out various types of decryption processing, interactive authentication decryption processing of encrypted content or the like for example, recording medium 812 is hard disk for example, and the driver 811 that is used for the I/O of driving machine recording medium 812 and execution data recording/reproducing signal, each piece is connected to bus 801.
For example, by connecting for example bus of atapi bus, messaging device (main frame) 800 is connected with driver.Map table, content etc. are by digital signal I/O I/F802 I/O.Utilize cryptographic processing unit 807 to perform encryption processing and decryption processing, for example use aes algorithm etc.
The program of noting for example being used for carrying out content playback or recording processing is stored among the ROM808, and storer 810 is used and carries out essential program simultaneously, is used to protect the perform region of special parameter and data.
ROM808 or recording medium 812 storages, for example, the public-key certificate of the public keys of administrative center, the privacy key of main frame, main frame, and further, as the driver CRL that cancels tabulation, or the like.
In reproduction of content or outside output, the data conversion treatment program of obtaining from information recording carrier is employed to carry out the processing of the various processing sequences of formerly describing during handling example, the for example deciphering of encrypted content, the recovery of map table, based on writing of the translation data that is stored in the data in the map table, or the like.
8. information recording medium manufacturing apparatus and information recording carrier
With descriptor recording medium manufacturing equipment and information recording carrier.That is to say, description is applied to the manufacturing equipment of the information recording carrier of foregoing reproduction processes, its method and information recording carrier.
Information recording medium manufacturing apparatus is, for example, is used to make the equipment of the information recording carrier 100 of the record data that storage formerly describes with reference to Fig. 1.
Information recording medium manufacturing apparatus comprises: data processing unit, be used to produce the content that comprises the destruction data that are different from correct content configuration data, and map table, the parameter identifier that comprises the memory-map list body data is determined table, this map table body data be parameter by utilizing corresponding means setting to will substituting translation data is calculated or encryption is stored (described section is the sectional area of content) of destroying data, and storage is as the parameter identifier of the identification information of parameter; And data record unit, be used for being recorded in information recording carrier with comprising the content and the map table that destroy data.
As formerly describing with reference to Figure 20, the parameter identifier that produces by the data processing unit in the configuration of an embodiment of information recording medium manufacturing apparatus determine an example of table can be with parameter identifier and content configuration data section the table that is associated of the packet number of bag of head position.
Perhaps, as formerly describing with reference to Figure 25, the parameter identifier that is produced by the data processing unit in the configuration of an embodiment of information recording medium manufacturing apparatus determines that another example of table can be the table that parameter identifier is associated with EP figure registration Table I D with the registration table identifier that acts on EP figure, this EP figure be included in the content configuration data section the information of bag of head position.
The information recording carrier that produces by such manufacturing equipment is, with reference to as described in Fig. 1 and other figure, has following content as the information recording carrier of having stored data as formerly:
(a) comprise the content of the destruction data that are different from correct content configuration data; And
(b) parameter identifier that comprises the memory-map list body data is determined the map table of table, these data are by the alternative translation data of destroying data is calculated or encryption is stored to being used for, wherein utilize the parameter that is provided with corresponding to as the section of the cut zone of content, also store parameter identifier as the identifying information of parameter.
In one embodiment, with reference to as described in Figure 20, be recorded in map table in the information recording carrier and be the table that parameter identifier is associated with packet number at the bag of the head position of the section of content configuration data as previous.As previous with reference to as described in Figure 25, this be one with parameter identifier and the table that is associated with the EP figure registration Table I D of the registration table identifier that acts on EP figure, this EP figure is included in the information of bag of head position of the section of content configuration data.
Up to the present, describe the present invention in detail with reference to specific embodiments.But self-evident those of ordinary skills can make various changes and displacement to embodiment under the prerequisite that does not break away from essence of the present invention.That is to say that the present invention is open with exemplary form, and should not understand on being limited property ground.Can partly judge essence of the present invention with reference to claim.
A series of processing that attention is described in instructions can be passed through hardware, software or the combination of the two and realize.Under the situation of utilizing software carry out to handle, the program of recording processing sequence can be installed in the storer in the computing machine that has embedded specialized hardware and carry out, and perhaps program can be installed in the multi-purpose computer that can carry out various types of processing.
For example, program can be recorded in the hard disk or ROM (ROM (read-only memory)) as recording medium in advance.Perhaps, this can be stored in (being recorded in) movably medium for example in floppy disk, CD-ROM (ROM (read-only memory) CD), MO (magneto-optic disk) disk, DVD (digital versatile disc), disk, the semiconductor memory etc. provisionally or for good and all.Removable recording medium like this may be provided in so-called bag software.
Attention except from for example above-mentioned removable recording medium installation procedure to computing machine, program can wirelessly be sent to computing machine from download address, perhaps for example LAN (LAN (Local Area Network)) or the Internet are sent to computing machine by cable system, utilize computing machine to receive the program that transmits by this way, so that be installed in the recording medium of for example hard disk etc. of embedding.
Simultaneously, various types of processing of describing in instructions are not restricted in described sequential to be carried out, but can depend on that the processing power of the equipment of carry out handling carries out concurrently or independently.The system that is noted that use in this manual equally is that the logic of a plurality of equipment is carefully closed, and is not restricted to the equipment that lays respectively in the single shell.

Claims (35)

1, a kind of being used to carried out the messaging device that content playback is handled, and comprising:
The content playback processing unit is used to carry out the data conversion treatment of a part of the configuration data of the input content of utilizing translation data to substitute will to reproduce, and carries out and be used for reproducing the processing that content is reproduced; And
The parameter generating unit is used to described content playback processing unit that the parameter that will be applied in the described data conversion treatment is provided;
Wherein said content playback processing unit has the configuration that the calculation of parameter request that is used to get parms identifier and will be attended by described parameter identifier outputs to described parameter generating unit, and described parameter identifier is different for each section of the cut zone that is set to reproduce content;
And wherein said parameter generating unit has and is used in response to providing configuration corresponding to the parameter of section from the calculation of parameter request of described content reproduction unit for described content reproduction unit.
2, according to the messaging device of claim 1, wherein said content playback processing unit has a kind of like this configuration, be used to use obtain from described parameter generating unit corresponding to the parameter of section the map table data that comprise described translation data are carried out computing or encryption, and the recovery that is used to carry out the data that comprise the translation data of using as the alternate data of described section configuration data is handled.
3, according to the messaging device of claim 1, wherein said content playback processing unit has the configuration that is used for carrying out following processing: from being included in the packet number that obtains the configuration packet that is included in the section the reproducing part as the EP figure of the clip information of contents reproducing section information;
And with reference to described parameter identifier and the parameter identifier that is associated as the packet number of content configuration data are determined to show, and obtain parameter identifier corresponding to the packet number of described section configuration packet.
4, according to the messaging device of claim 3, wherein said parameter identifier determines that table is wherein said parameter identifier and be positioned at packet number as the bag of the head position of the section of the content configuration data table that is mutually related.
5, according to the messaging device of claim 3, wherein said packet number is corresponding to the source packet number (SPN) that is included in the I picture among the EP figure.
6, according to the messaging device of claim 1, wherein said content playback processing unit has the configuration that is used to carry out following processing: obtain EP figure registration Table I D, this EP figure registration Table I D is the registration table identifier that is included in as the EP figure in the clip information of contents reproducing section information;
And determine to show with reference to the parameter identifier that described parameter identifier and EP figure registration Table I D is associated, to obtain parameter identifier corresponding to the packet number of described section configuration packet.
7, according to the messaging device of claim 6, wherein said parameter identifier is determined table to be wherein said parameter identifier with EP figure registration Table I D as the registration table identifier of EP figure is mutually related one to show, and this EP figure comprises the information that is positioned at as the bag of the head position of the section of content configuration data.
8, according to the messaging device of claim 1, wherein said content playback processing unit has the configuration that is used to carry out following processing: obtain the EP figure registration Table I D as the registration table identifier of EP figure, described EP figure is included in the clip information as contents reproducing section information
And based on the parameter identifier of described EP figure registration Table I D calculating corresponding to described section.
9, messaging device according to Claim 8, wherein said content playback processing unit has the configuration that is used to carry out following processing: calculate parameter identifier corresponding to described section according to following expression based on described EP figure registration Table I D:
(SP_ID)＝(EP_map_ID)/N
SP_ID wherein: parameter identifier;
EP_map_ID:EP figure registration Table I D; And
N: the number of the EP figure registration table that is provided with corresponding to section.
10, according to the messaging device of claim 1, wherein said content playback processing unit has the configuration that is used for carrying out following processing: counting is included in the access times as the EP figure registration table of the clip information of contents reproducing section information, and calculates parameter identifier corresponding to described section based on the counting of described EP figure registration table.
11, according to the messaging device of claim 1, wherein said content playback processing unit has a kind of like this configuration, be used for: carry out the processing of from the bag that is included in content, obtaining the map table data that comprise described translation data, what application was obtained from described parameter generating unit carries out computing or encryption corresponding to the parameter of section, and the recovery of carrying out the data that comprise the translation data of using as the alternate data of described section configuration data is handled.
12, according to the messaging device of claim 1, wherein said content playback processing unit has a kind of like this configuration, be used for: carry out from being different from and being independent of the processing that the map table data of content are obtained the map table data that comprise described translation data, what application was obtained from described parameter generating unit carries out computing or encryption corresponding to the parameter of section, and the recovery of carrying out the data that comprise the translation data of using as the alternate data of described section configuration data is handled.
13, according to any one messaging device of claim 1 to 12, wherein said parameter calculation unit has the configuration of being carried out by the virtual machine that is arranged in the messaging device.
14, according to any one messaging device of claim 1 to 13, has a kind of like this configuration, make calculation of parameter request carry out, and the parameter from described parameter calculation unit to described content playback processing unit provide as the response of described interrupt request is carried out as interrupt request from described content playback processing unit to described parameter calculation unit.
15, a kind of information recording medium manufacturing apparatus comprises:
Data processing unit is used for producing:
The content that comprises the destruction data that are different from correct content configuration data, and
Map table comprises the definite table of the parameter identifier of storing following content:
Map table body data, these data are by utilizing the parameter that is provided with corresponding to the section as the cut zone of content that the translation data that is used for alternative described destruction data is calculated or encryption is stored, and
Parameter identifier as the identification information of described parameter; And
Data record unit, the content and the described map table that are used for comprising described destruction data are recorded in information recording carrier.
16, according to the information recording medium manufacturing apparatus of claim 15, wherein said parameter identifier determines that table is wherein said parameter identifier and be positioned at packet number as the bag of the head position of the section of the content configuration data table that is mutually related.
17, according to the information recording medium manufacturing apparatus of claim 15, wherein said parameter identifier is determined table to be wherein said parameter identifier with EP figure registration Table I D as the registration table identifier of EP figure is mutually related one to show, and this EP figure comprises the information that is positioned at as the bag of the head position of the section of content configuration data.
18, a kind of information recording carrier, wherein stored:
Replaced and the content reproduced of wherein a part of content configuration data;
Map table, correspondence has also been registered parameter identifier and translation data, described parameter identifier is set up corresponding to section, and wherein the content configuration data are divided into a plurality of sections and be set up, and described translation data is the object that substitutes by a part of wanting replaced content configuration data;
Wherein this translation data is based on corresponding to the parameter of parameter identifier and has carried out the data of calculating or encoding process.
19, according to the information recording carrier of claim 18, comprising: the show time scale of entry point (PTS), and EP figure, on this EP figure, the associated and registration as the packet number of address; And
Described segment base is cut apart in a plurality of entry point that are registered to this EP figure.
20, according to the information recording carrier of claim 19, wherein said segment base is in fixing entry point and cut apart.
21, a kind of data structure, wherein stored:
Replaced and the content reproduced of wherein a part of content configuration data;
Map table, association has also been registered parameter identifier and translation data, described parameter identifier is set to be associated with section, and wherein the content configuration data are divided into a plurality of sections and be set up, and described translation data is the object that substitutes by a part of wanting replaced content configuration data;
Wherein this translation data is based on the parameter that is associated with parameter identifier and has carried out the data of calculating or encoding process.
22, a kind of being used to carried out the information processing method that content playback is handled, and comprises step:
The content playback of carrying out in the content playback processing unit is handled, and is used to carry out the data conversion treatment of rewriting with a part of configuration data of reproduced input content, and is used for reproducing the processing that content is reproduced; And
The parameter generating of carrying out in the parameter generating unit is used to described content playback processing unit that the parameter of using in described data conversion treatment is provided;
Wherein said content playback is handled has following step: the calculation of parameter request that gets parms identifier and will be attended by described parameter identifier outputs to described parameter generating unit, and this parameter identifier is different for each section of the cut zone that is set to reproduce content;
And wherein said parameter generating has following step: in response to the calculation of parameter request from described content reproduction unit, for described content reproduction unit provides parameter corresponding to section.
23, according to the information processing method of claim 22, wherein said content playback is handled has following step: be used to use the parameter of obtaining from described parameter generating unit corresponding to section the map table data that comprise described translation data are carried out computing or encryption, and the recovery that is used to carry out the data that comprise the translation data of using as the alternate data of described section configuration data is handled.
24, according to the information processing method of claim 22, wherein said content playback is handled has the step that is used for carrying out following processing: from being included in the packet number that obtains the configuration packet that is included in the section the reproducing part as the EP figure of the clip information of contents reproducing section information;
And with reference to described parameter identifier and the parameter identifier that is associated as the packet number of content configuration data are determined to show, and obtain parameter identifier corresponding to the packet number of described section configuration packet.
25, according to the information processing method of claim 24, wherein said parameter identifier determines that table is wherein said parameter identifier and be positioned at packet number as the bag of the head position of the section of the content configuration data table that is mutually related.
26, according to the information processing method of claim 24, wherein said packet number is corresponding to the source packet number (SPN) that is included in the I picture among the EP figure.
27, according to the information processing method of claim 22, wherein said content playback is handled has the step that is used to carry out following processing: obtain the EP figure registration Table I D as the registration table identifier of EP figure, this EP figure is included in the clip information as contents reproducing section information;
And determine to show with reference to the parameter identifier that described parameter identifier and EP figure registration Table I D is associated, to obtain parameter identifier corresponding to the packet number of described section configuration packet.
28, according to the information processing method of claim 27, wherein said parameter identifier is determined table to be wherein said parameter identifier with EP figure registration Table I D as the registration table identifier of EP figure is mutually related one to show, and this EP figure comprises the information that is positioned at as the bag of the head position of the section of content configuration data.
29, according to the information processing method of claim 22, wherein said content playback is handled has the step that is used to carry out following processing: obtain the EP figure registration Table I D as the registration table identifier of EP figure, this EP figure is included in the clip information as contents reproducing section information
And based on the parameter identifier of described EP figure registration Table I D calculating corresponding to described section.
30, according to the information processing method of claim 29, wherein said content playback is handled has the step that is used to carry out following processing: calculate parameter identifier corresponding to described section according to following expression formula based on described EP figure registration Table I D:
(SP_ID)＝(EP_map_ID)/N
SP_ID wherein: parameter identifier;
EP_map_ID:EP figure registration Table I D; And
N: the number of the EP figure registration table that is provided with corresponding to section.
31, according to the information processing method of claim 22, wherein said content playback is handled has the step that is used for carrying out following processing: counting is included in the access times as the EP figure registration table of the clip information of contents reproducing section information, and calculates parameter identifier corresponding to described section based on the counting of described EP figure registration table.
32, according to the information processing method of claim 22, wherein said content playback is handled has the step that is used for carrying out following processing: obtain the map table data that comprise described translation data from the bag that is included in content, application is carried out computing or encryption from what described parameter generating was obtained corresponding to the parameter of section, and the recovery of carrying out the data that comprise the translation data of using as the alternate data of described section configuration data is handled.
33, according to the information processing method of claim 22, wherein said content playback is handled has the step that is used to carry out following processing: obtain the map table data that comprise described translation data from the map table data that are different from and be independent of content, what application was obtained from described parameter generating unit carries out computing or encryption corresponding to the parameter of section, and the recovery of carrying out the data that comprise the translation data of using as the alternate data of described section configuration data is handled.
34, a kind of information recording medium manufacturing method comprises step:
Produce data processing, be used for
Replaced and the content reproduced of wherein a part of content configuration data;
Map table, association has also been registered parameter identifier and translation data, described parameter identifier is set to be associated with section, and wherein the content configuration data are divided into a plurality of sections and be set up, and described translation data is the object that substitutes by a part of wanting replaced content configuration data;
Wherein this translation data has been carried out calculating or encoding process based on the parameter that is associated with parameter identifier; And
Data recording is used for and will comprises that the content and the conversion table that destroy data record this information recording carrier.
35, a kind of being used for carried out the computer program that content playback is handled on messaging device, and described program comprises step:
The content playback carried out in the content playback processing unit is handled, and is used to carry out the data conversion treatment of rewriting with a part of configuration data of reproduced input content, and is used for processing that this reproduction content is reproduced; And
The parameter generating of carrying out in the parameter generating unit is used to described content playback to handle the parameter of using in described data conversion treatment is provided;
Wherein said content playback is handled has following step: the calculation of parameter request that is used to get parms identifier and will be attended by described parameter identifier outputs to described parameter generating unit, and this parameter identifier is different for each section of the cut zone that is set to reproduce content;
And wherein said parameter generating has following step: be used in response to the calculation of parameter request from described content reproduction unit, for described content reproduction unit provides parameter corresponding to section.
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