CN101860741B

CN101860741B - Information processing device and method

Info

Publication number: CN101860741B
Application number: CN2010101636374A
Authority: CN
Inventors: 高岛芳和
Original assignee: Sony Corp
Current assignee: Sony Corp
Priority date: 2005-08-31
Filing date: 2006-08-31
Publication date: 2012-01-11
Anticipated expiration: 2026-08-31
Also published as: CN102547201B; CN101083760B; CN102547201A; BRPI0603676A; CN101860741A; BRPI0603676B1; CN101083760A

Abstract

An information processing device includes: a modified data generating unit for generating modified data obtained by modifying content configuration data; a fix-up table generating unit for generating a fix-up table in which transformation data serving as an object to be replaced with the modified data is registered; and a data recording unit for recording content including the modified data and the fix-up table in an information recording medium; wherein the modified data generating unit is configured so as to execute data modification processing with the configuration units of MPEG encoded data included in a TS packet making up content as data modification processing units.

Description

Messaging device and information processing method

The application of this division is that application number is 200610126320.7, the applying date is on August 31st, 2006, denomination of invention is divided an application for the application for a patent for invention of " messaging device, information recording medium manufacturing apparatus, information recording carrier and method thereof and computer program ".

The cross reference of related application

The application's requirement is filed in the priority of the U.S. Provisional Patent Application US60/712389 on August 31st, 2005.

The present invention comprises Japanese patent application JP 2005-252860 that submits in Japan Patent office with on August 31st, 2005 and the relevant theme of submitting in Japan Patent office on June 2nd, 2006 of Japanese patent application JP 2006-154792, has merged its full content by reference at this.

Technical field

The present invention relates to a kind of messaging device, a kind of information recording medium manufacturing apparatus, a kind of information recording carrier and method thereof and a kind of computer program.In more detail; The present invention relates to a kind of messaging device, a kind of information recording medium manufacturing apparatus, a kind of information recording carrier and method thereof and a kind of computer program; Wherein get rid of unwarranted content and use, thereby realize strict content use and management through various types of contents that require the content use and management being submitted to data conversion treatment.

Background technology

Various types of software datas; For example voice data as music etc., view data as film etc.; Games; Various types of application programs etc. (being called as " content " hereinafter) can be used as numerical data and are kept in the recording medium, for example adopt Blu-ray disk (registered trade mark) or DVD (digital multi disk), MD (minifloppy) and the CD (CD) of blue laser.Especially, adopting the Blu-ray disk (registered trade mark) of blue laser is the disk that the high density recording ability is arranged, and can write down great amount of images content etc. with the data of high image quality.

Digital content is stored in above-mentioned various types of information recording carrier (recording medium), so that be provided for the user.The user for example reproduces on PC (PC), the magnetic disc player etc. and uses this content at the own reproducer that is had.

Usually, many contents for example the distribution power etc. of music data, view data etc. be by its creator or supplier all.Correspondingly, in issued content, carry out such arrangement usually: draft some and use restriction, promptly only authorized users is allowed the use of content, and uncommitted reproduction etc. will be prevented from.

Utilize digital recording equipment and recording medium; Record and reproduce can be repeated and not have the quality of image for example or audio frequency aspect to reduce, and for example the such problem of the content of duplicating that has the so-called illegal reprint disk, the use that copy the content among the CD-Rs etc. to be kept on the hard disk of PC etc. of content, the distribution through internet distribution bootlegging will occur in a large number.

The huge storage capacity recording medium, recording medium DVD of the use blue laser that gets up of development in recent years etc. for example can be with the digital information recording lot of data on the single disk, for example cadre's film as for.The ability that pictorial information etc. is recorded as digital information makes and stops unwarranted duplicating with the protection copyright owner to become a more importantly subject under discussion.Up to the present, implemented various technology to stop digital recording equipment and recording medium is unwarranted duplicates, said numerical data is unwarranted duplicates so that stop.

Summary of the invention

It is a kind of that to stop unwarranted reproducting content and protect copyright owner's technology be the encryption of content.Yet even the content of encrypting, if key is leaked, unwarranted decryption content also will leak, and problem still exists.The scheme of in the uncensored patent application publication of Japan 11-45508 number, describing is a kind of relevant technology; One of them scheme is disclosed as the said problem that solved, and promptly wherein discloses one through rewrite the scheme that a part of content stops the unwarranted reproduction of content with invalid data.

Yet, even content is replaced by invalid data, the position is set or composition in the content can be identified and greatly not influence said content of invalid data.That is to say, through execution considered invalid data the position is set, about the processing of modification pattern of content or the like, can stop reproduction of content effectively.And through inserting under the situation that invalid data etc. makes amendment to content, when reproducing said content, the content of modification need be replaced by normal content-data.For example, under the situation of carrying out high-speed retrieval, be difficult to carry out this data replacement, this will cause carrying out the problem of high-speed retrieval.

The present invention carries out according to this situation.Realize a kind of scheme that can destroy content through data modification effectively; Realize that a kind of content that can stop effectively is by the scheme of unwarranted use; And a kind of messaging device, a kind of information recording medium manufacturing apparatus, a kind of information recording carrier and method thereof and a kind of computer program be provided further; Wherein use for example high-speed retrieval of special reproduction; Need not to use the data division that is modified through starting to reproduce, can realize high-quality reproduction, this has been considered to desirable.

A kind of messaging device according to one embodiment of the invention comprises: one is used to generate through revising the data generating unit that is modified that is modified data that the content configuration data obtain; One is used to generate one and has registered as by the correction chart generation unit of the correction chart (fix-up table) of the translation data of the said target that is modified the data replacement; And one be used for comprising the said data record unit that is modified the content of data and said correction chart at information recording carrier record; Wherein dispose and saidly be modified data generating unit and handle so that use the dispensing unit of the mpeg encoded data of the TS be included in component content in dividing into groups to carry out data modification as the data modification processing unit.

Further; Can dispose and saidly be modified data generating unit and handle so that carry out data modification; Wherein a fragment within a DCT piece that is included in the mpeg encoded data is set to the data modification processing unit with the interrupt data of generation as the interruption content, and can dispose said data record unit so that carry out the processing that is used for comprising at an information recording carrier record content of said interrupt data.

Can dispose and saidly be modified data generating unit and handle so that carry out data modification; Wherein be arranged at an arithmetic code block in the image of mpeg encoded data and be set to the data modification processing unit generating, and can dispose said data record unit so that carry out the processing that is used for writing down the content that comprises said interrupt data at an information recording carrier as the interrupt data of interrupting content.

Further; Can dispose and saidly be modified data generating unit and handle so that carry out data modification; Wherein select an I image that is included in the mpeg encoded data to submit to image that data modification handles generating, and can dispose said data record unit so that carry out the processing that is used for writing down the content that comprises said interrupt data at an information recording carrier as the interrupt data of interrupting content as one.

Further, can dispose said correction chart generation unit, wherein register the identifier collection translation data that identifying information that content reproducing device or content playback are used can be analyzed so that generate a correction chart.

Further; Can dispose said correction chart generation unit and handle so that carry out data modification; Wherein use a macro block within a DCT who is included in the mpeg encoded data determines the identifier collection translation data that identifying information that content reproducing device or content playback are used can be analyzed to be set, to generate said identifier collection translation data as the data modification processing unit.

Further; Can dispose said correction chart generation unit and handle so that carry out data modification; Wherein use a B image that is included in the mpeg encoded data identifier collection translation data that identifying information that content reproducing device or content playback are used can be analyzed to be set, to generate said identifier collection translation data as the data modification processing unit.

Further, can dispose the said data generating unit that is modified, so that select respectively in a plurality of I images from be included in the mpeg encoded data: a conduct is modified the I image of data; With one and only will be selected as the I image that is modified data and submit to data modification and handle as the non-I image that is modified data, to generate interrupt data.

Further; Said messaging device may further include a playback management information generation unit; It is used to carry out table that the positional information that makes the non-I of being modified image can be obtained or the generation of EP mapping is handled; Dispose said data record unit simultaneously, so that the processing of table that the positional information that makes the non-I of being modified image that executive logging is generated by said playback management information generation unit in an information recording carrier can be obtained or EP mapping.

Further; Can dispose and saidly be modified data generating unit so that through for each predetermined period (N); An I image setting in a plurality of I images is the non-data that are modified in the mpeg encoded data with being included in, and carries out the processing that is used to generate interrupt data.

Further; Can dispose and saidly be modified data generating unit and handle so that carry out data modification; All I images that wherein will be included in the mpeg encoded data are chosen as the non-data that are modified, and only B image or P image are chosen as to be submitted to and revise the image handled to generate interrupt data.

A kind of wherein be the information recording carrier preservation of content recorded according to another embodiment of the present invention: a content, and the part configuration data of wherein said content is set to be modified data; A correction chart, its record about as will be by the translation data of the said target that is modified data replacements the positional information and the content of said translation data be set; The wherein said data that are modified are to handle the data that generate through the one or more view data the non-I of the being modified image of the appointment in a plurality of I images in being included in the mpeg encoded data being carried out data modification.

Further; The said data that are modified can comprise the interrupt data that stops normal reproduction, simultaneously said interrupt data be data modification that dispensing unit along with the mpeg encoded data in dividing into groups comprising the TS at component content is set to the data modification processing unit handle and produce be modified data.

Further; The said data that are modified can comprise the interrupt data that stops normal reproduction, simultaneously said interrupt data be along with the data modification that a fragment within a DCT piece that is included in the mpeg encoded data wherein is set to processing unit handle and produce be modified data.

Further; The said data that are modified can comprise the interrupt data that stops normal reproduction, simultaneously said interrupt data be along with the data modification that an arithmetic code block in the image that wherein is arranged on the mpeg encoded data is set to processing unit handle and produce be modified data.

Further; The said data that are modified can comprise the interrupt data that stops normal reproduction, and said interrupt data is the data that are modified that produce along with the data modification processing that is chosen as the image of submitting to the data modification processing comprising an I image in the mpeg encoded data simultaneously.

Further, said correction chart can be the correction chart of wherein having registered the identifier collection translation data that identifying information that content reproducing device or content playback are used can be analyzed.

Further, said identifier collection translation data can be along with the data modification that a macro block within a DCT piece that is included in the mpeg encoded data wherein is set to processing unit is handled and the data that produce.

Further, said identifier collection translation data can be along with one of them is included in that data modification that B image in the mpeg encoded data is set to processing unit is handled and the data that produce.

Further, said information recording carrier may further include table or the EP mapping that a positional information that makes the non-I of being modified image can be acquired as recorded information.

Further, the memory contents of said information recording carrier can be wherein for each predetermined period (N), and the content of the non-I of a being modified image is set in a plurality of I images in being included in the mpeg encoded data.

Further; Said information recording carrier can have an EP mapping; It has a plurality of corresponding to a packet numbering and the clauses and subclauses that show time mark (PTS) as address information; Simultaneously said memory contents is wherein for each predetermined period clauses and subclauses that are registered in the EP mapping, said clauses and subclauses is provided with the content of the non-I of a being modified image.

Further, the said content that is kept in the information recording carrier is the content that is chosen as the non-I of being modified image comprising all the I images in the mpeg encoded data.

A kind of data structure according to another embodiment of the present invention comprises: a content, and the part configuration data of wherein said content is set to be modified data; A correction chart, its record about as will be by the translation data of the said target that is modified data replacements the positional information and the content of said translation data be set; The wherein said data that are modified are to handle the data that generate through the one or more view data the non-I of the being modified image of the appointment in a plurality of I images in being included in the mpeg encoded data being carried out data modification.

Further, said be modified data can be along with the data modification that the dispensing unit comprising the mpeg encoded data in the TS of a component content divides into groups is set to the data modification processing unit handle and produce be modified data.

Further, said be modified data can be along with the data modification that a fragment within a DCT piece that is included in the MPEG coded data wherein is set to processing unit handle and produce be modified data.

Further, said be modified data can be along with the data modification that an arithmetic code block in the image that wherein is arranged on the mpeg encoded data is set to processing unit handle and produce be modified data.

Further, the said data that are modified can be the data that are modified that produce along with the data modification processing that is chosen as the image of submitting to the data modification processing comprising an I image in the mpeg encoded data.

Further, said identifier collection translation data can be along with the data modification that is set to processing unit comprising a B image in the mpeg encoded data is handled and the data of generation.

Further, can comprise table or the EP mapping that a positional information that makes the non-I of being modified image can be obtained.

Further, said content can be wherein for each predetermined period (N), and the content of the non-I of a being modified image is set in a plurality of I images in being included in the mpeg encoded data.

Further; Said data structure can have an EP mapping; It has a plurality of corresponding to a packet numbering and the clauses and subclauses that show time mark (PTS) as address information; Simultaneously said memory contents is wherein for each predetermined period clauses and subclauses that are registered in the EP mapping, said clauses and subclauses is provided with the content of the non-I of a being modified image.

Further, said content can be the content that is chosen as the non-I of being modified image comprising all the I images in the mpeg encoded data.

A kind of information recording medium manufacturing apparatus according to another embodiment of the present invention comprises: one is used to generate through revising the data generating unit that is modified that is modified data that the content configuration data obtain; One is used to generate one and has registered as by the correction chart generation unit of the correction chart of the translation data of the said target that is modified the data replacement; And one be used for comprising the said data record unit that is modified the content of data and said correction chart at information recording carrier record; Wherein dispose and saidly be modified data generating unit so that the dispensing unit that uses the mpeg encoded data of the TS be included in component content in dividing into groups as the data modification processing unit, is carried out data modification and handled.

A kind of messaging device according to another embodiment of the present invention; It is used to carry out the reproduction processes that quilt that part content configuration data wherein are set to be modified data is submitted to the mpeg encoded processed content, and comprising: one is used for selecting an I image as the non-non-I of the being modified image selected cell that is modified data from content; And decoding processing and the decoding output processing unit of exporting processing that is used to carry out the non-I of the being modified image of selecting by the said non-I of being modified image selected cell.

Further, can dispose the said non-I of being modified image selected cell in case carry out through use the table that is provided with corresponding to the content that will be reproduced shine upon with EP at least one, obtain a processing as the position of the non-I image that is modified data.

Further, can dispose the said non-I of being modified image selected cell, select one then as the non-I treatment of picture that is modified data so that carry out for I image of each predetermined period selection.

Further; Can dispose the said non-I of being modified image selected cell so that obtain and be equivalent to, and from the EP mapping, obtain the non-information that is modified the I image of data that is set to according to said cycle information by the cycle information at the non-interval that is modified GOP that data form or I image cycle information as EP mapping registration form.

Further; Can dispose the said non-I of being modified image selected cell so that carry out basis for the unmodifiable fixed cycle information of each content; Promptly be equivalent to the information that is modified the interval of GOP that data form or I image by non-, select one as the non-I treatment of picture that is modified data.

Further; Can dispose the said non-I of being modified image selected cell so that carry out according to cycle information corresponding to content; It is according to the content setting and be to be equivalent to the cycle information that is modified the interval of GOP that data form or I image by non-, select one as the non-I treatment of picture that is modified data.

A kind of information processing method according to another embodiment of the present invention can comprise the steps: that being used to generate the data that are modified that are modified data that obtain through modification content configuration data generates; Being used to generate one has registered as being generated by the correction chart of the correction chart of the translation data of the said target that is modified the data replacement; And be used for comprising the said data record that is modified the content of data and said correction chart at an information recording carrier record; Wherein saidly be modified dispensing unit that data generate to use the mpeg encoded data of the TS that is included in component content in dividing into groups, carry out data modification and handle as the data modification processing unit.

Further; It is said that to be modified that data generate can be to be used to carry out the data modification processed steps; Wherein a fragment within a DCT piece that is included in the mpeg encoded data is set to the data modification processing unit with the interrupt data of generation as the interruption content, and said data record is to be used for carrying out the processed steps that comprises the content of said interrupt data at an information recording carrier record.

Further; It is said that to be modified that data generate can be to be used to carry out the data modification processed steps; Wherein be arranged on an arithmetic code block in the image of mpeg encoded data and be set to the data modification processing unit generating, and said data record is to be used for carrying out the processed steps that writes down the content that comprises said interrupt data at an information recording carrier as the interrupt data of interrupting content.

Further; It is said that to be modified that data generate can be to be used to carry out the data modification processed steps; Be chosen as being submitted to image that data modification handles generating comprising an I image in the mpeg encoded data, and said data record is to be used for carrying out the processed steps that writes down the content that comprises said interrupt data at an information recording carrier as the interrupt data of interrupting content.

Further, to generate can be to be used to generate a step of wherein having registered the correction chart of the identifier collection translation data that identifying information that content reproducing device or content playback are used can be analyzed for said correction chart.

Further; It can be to be used to carry out the data modification processed steps that said correction chart generates; Wherein use a macro block within a DCT piece that is included in the mpeg encoded data as the data modification processing unit; The identifier collection translation data that identifying information that content reproducing device or content playback are used can be analyzed is set, to generate said identifier collection translation data.

Further; It can be to be used to carry out the data modification processed steps that said correction chart generates; Wherein use one to be included in B image in the mpeg encoded data as the data modification processing unit; The identifier collection translation data that identifying information that content reproducing device or content playback are used can be analyzed is set, to generate said identifier collection translation data.

Further, said to be modified that data generate can be to select respectively in a plurality of I images from be included in the mpeg encoded data: a conduct is modified the I image of data; With one and only will be selected as the I image that is modified data and submit to data modification and handle as the non-I image that is modified data, to generate the step of interrupt data.

Further, said information processing method may further include the step that playback management information generates, and with execution the table that the positional information of the non-I of being modified image can be obtained or the generation of EP mapping is handled; Wherein said data record is carried out and in an information recording carrier, is recorded in the table that the positional information that makes the non-I of being modified image that said playback management information generates in generating can be obtained or the processing of EP mapping.

Further, the said data that are modified generate and can pass through for each predetermined period (N), and an I image setting in a plurality of I images is the non-data that are modified in the mpeg encoded data with being included in, and carries out the processing that is used to generate interrupt data.

Further; The said data that are modified generate and can carry out data modification and handle; All I images that wherein will be included in the mpeg encoded data are chosen as the non-data that are modified, and only B image or P image are chosen as to be submitted to and revise the image of handling and be modified data with generation.

Further; The selection of the said non-I of being modified image is handled and can be obtained an EP mapping; It has a plurality of corresponding to a packet numbering and the clauses and subclauses that show time mark (PTS) as address information; And comprise for the clauses and subclauses that are registered in each predetermined period in the EP mapping, select the processing of clauses and subclauses.

A kind of information recording medium manufacturing method according to another embodiment of the present invention can comprise the steps: that being used to generate the data that are modified that are modified data that obtain through modification content configuration data generates; Being used to generate one has registered as being generated by the correction chart of the correction chart of the translation data of the said target that is modified the data replacement; And be used for comprising the said data record that is modified the content of data and said correction chart at an information recording carrier record; Wherein said be modified data generate be to use the mpeg encoded data of the TS that is included in component content in dividing into groups dispensing unit as the data modification processing unit, carry out the data modification processed steps.

A kind of information processing method according to another embodiment of the present invention; It is used to carry out the reproduction processes that quilt that part content configuration data wherein are set to be modified data is submitted to the mpeg encoded processed content, comprises the steps: to be used for to select an I image to select as the non-non-I of the being modified image that is modified data from content; And the decoding output that is used to carry out the decoding processing of the non-I of the being modified image of being selected by the said non-I of being modified image selected cell and export processing is handled.

Further, the said non-I of being modified image select can be carry out through use the table that is provided with corresponding to the content that will be reproduced shine upon with EP at least one, obtain a processed steps as the position of the non-I image that is modified data.

Further, it can be to carry out for each predetermined period to select an I image that the said non-I of being modified image is selected, and selects one then as the non-step that is modified the I treatment of picture of data.

Further; It can be such processing that the said non-I of being modified image is selected: obtain and be equivalent to the cycle information that is modified the interval of GOP that data form or I image by non-, and from EP shines upon, obtain the non-information that is modified the I image of data that is set to according to said cycle information.

Further; It can be that basis is for the unmodifiable fixed cycle information of each content that the said non-I of being modified image is selected; Promptly be equivalent to the cycle information that is modified the interval of GOP that data form or I image by non-, select one as the non-I treatment of picture that is modified data.

Further; It can be the cycle information according to corresponding to content that the said non-I of being modified image is selected; It is according to the content setting and be to be equivalent to the cycle information that is modified the interval of GOP that data form or I image by non-, select one as the non-I treatment of picture that is modified data.

A kind of computer program according to another embodiment of the present invention; The processing that it causes messaging device execution recorded content in an information recording carrier comprises the code that is used for following steps: be used to generate the data that are modified that are modified data that obtain through modification content configuration data and generate; Being used to generate a correction chart of having registered as the correction chart of the translation data that is replaced by the said target that is modified data generates; And be used for comprising the said data record that is modified the content of data and said correction chart at an information recording carrier record; Wherein said be modified data generate be set to use the mpeg encoded data of the TS that is included in component content in dividing into groups dispensing unit as the data modification processing unit, carry out the data modification processed steps.

A kind of computer program according to another embodiment of the present invention; It causes that a messaging device carries out the reproduction processes that quilt that part content configuration data wherein are set to be modified data is submitted to the mpeg encoded processed content, comprises the code that is used for following steps: be used for selecting an I image to select as the non-non-I of the being modified image that is modified data from content; And the decoding output that is used to carry out the decoding processing of the non-I of the being modified image of being selected by the said non-I of being modified image selected cell and export processing is handled.

Note saidly according to computer program of the present invention can being; For example; A kind of computer program; It can provide a storage medium or a communication media through providing with computer-readable format, for example as the communication media of the recording medium of CD, FD, MO etc. or picture network etc., can carry out the computer system of all kinds program code.Provide this program to realize processing with computer-readable format corresponding to the program in computer system.

From through the describing in further detail of the present invention program that describes after a while and accompanying drawing, other purpose of the present invention, characteristic and advantage will be conspicuous.Notice that term as used in this specification " system " refers to the logic assembling scheme of a plurality of equipment, is in the scheme in the same shell and be not limited to all component equipment.

Configuration according to an example of the present invention; Can carry out a scheme; Wherein record comprises and is different from the content that is modified data that is authorized to the content configuration data in an information recording carrier; And further; In said information recording carrier, preserve a record and be as by the correction chart of the translation data that is authorized to the content configuration data of the said target that is modified the data replacement with about the positional information that is provided with of said translation data content, can carry out a scheme simultaneously, wherein when carrying out the content playback processing; The content configuration data are submitted to the replacement of using according to the translation data that is recorded in the said correction chart in the information recording carrier to be handled; Even therefore leaking under the situation about taking place about the encryption key that is recorded in the encrypted content in the information recording carrier, the equipment that can't obtain translation data still can't be carried out reproduction of content, thereby stops said content by unwarranted use.

And; Configuration according to an example of the present invention; The translation data that comprises the data that the configuration bit that makes content reproducing device or content playback use the identifier information that can be identified can be analyzed will be employed; Even therefore under the situation that this unwarranted content will flow out, the translation data analysis can be accurately positioned the outflow source of unwarranted content.

And; Configuration according to an example of the present invention about being modified the position that is provided with of data, is used to realize the more effective setting of data corruption; For example destroy validity date; Can realize through such scheme: the identification-data area of the mpeg data target that is set to be modified etc. wherein is provided with the data modification that the configuration bit that makes content reproducing device or content playback use the identifying information that can be identified can be analyzed, simultaneously so that reduce the influence to original data content as far as possible.

And; Configuration according to an example of the present invention; Can carry out a scheme; Wherein generate content so that allow special reproduction, as being modified data reproducing except the said high-speed retrieval that is modified the content of the part the data division about wherein being provided with, and with content record in an information recording carrier.Use special reproduction such as high-speed retrieval, reproduction processes equipment can carry out need not carrying out the special reproduction of data conversion.

Description of drawings

Fig. 1 describes to be recorded in a content in the information recording carrier, and the sketch map of the required data conversion treatment of content playback;

Fig. 2 is described in correction chart to be kept under the situation within the transmission stream packets that comprises content the sketch map of data configuration;

Fig. 3 describes a kind ofly to be used to carry out establishment and the recording processing that comprises the content that is modified data, and the sketch map that is used to preserve the equipment disposition that the manufacturing of the information recording carrier of content handles;

Fig. 4 is a sketch map of describing the generation treatment step that comprises the content that is modified data;

Fig. 5 is a sketch map of describing the data configuration that will be recorded in a data correction chart in the information recording carrier;

Fig. 6 is the sketch map of the whole data configuration of a correction chart of expression;

Fig. 7 is that expression is included in a sketch map of revising the data configuration of table block (FUT piece) in a plurality of correction table blocks (FUT piece) within the correction chart;

Fig. 8 is illustrated in a sketch map of revising the data configuration of the translation data clauses and subclauses within the table block (FUT);

Fig. 9 describes the sketch map that its coding method of having used the configuration of DCT piece is generated the processing that is modified data with a kind of;

Figure 10 describes the sketch map that its coding method of having used the configuration of DCT piece is generated the processing that is modified data with a kind of;

Figure 11 describes with a kind of sketch map that its coding method of having used arithmetic coding is generated the processing that is modified data;

Figure 12 is described in the sketch map that the image that is modified in the data generation is selected processing;

Figure 13 describes the sketch map that its coding method of having used the configuration of DCT piece is generated the processing of identifier collection translation data with a kind of;

Figure 14 is the parallel sketch map of describing with a kind of DCT piece configuration and arithmetic coding that makes usage generate the processing of translation data;

Figure 15 is configuration and the sketch map of processing of describing the storage data of a kind of information recording carrier, a kind of driving arrangement and a kind of messaging device;

Figure 16 is the sketch map that example is set of describing the content management units of the memory contents be used to be provided with information recording carrier;

Figure 17 is the sketch map that is described in the said content management units and the correlation between unit key of the memory contents that is used to be provided with information recording carrier;

Figure 18 is the sketch map of the processing example 1 of expression content playback processing;

Figure 19 is the sketch map that is described in the mutual authentication processing order between a driver and the main frame;

Figure 20 is a sketch map of describing the translation data self-adaptive processing that will in content playback, carry out;

Figure 21 is the sketch map of the processing example 2 of expression content playback processing;

Figure 22 is the sketch map of the processing example 3 of expression content playback processing;

Figure 23 is described in correction chart to be kept under the situation within the transmission stream packets that comprises content the sketch map of data configuration;

Figure 24 is a sketch map of describing a content configuration example, and its use will be applied to the scheme that I image among the GoP is not set to be modified data that is included in of special reproduction;

Figure 25 describes one to make and can carry out special reproduction image height speed and reproduce and need not to use and be modified the sketch map that data are carried out the content configuration example of data replacement;

Figure 26 describes one to make and can carry out special reproduction image height speed and reproduce and need not to use and be modified the sketch map that data are carried out the content configuration example of data replacement;

Figure 27 is a sketch map of describing the example of a table (special reproduction management information table), in this table, writes down the position of the I image that is not set to be modified data;

Figure 28 is a sketch map of describing the example of a table (special reproduction management information table), in this table, writes down the position of the I image that is not set to be modified data;

Figure 29 is a sketch map of describing an EP mapping;

Figure 30 is a sketch map of describing an EP mapping;

Figure 31 is the sketch map that EP mapping of expression is disposed, and this disposes through EP mapping itself is used to revise also and only shines upon with reference to EP, starts the high-speed retrieval that special reproduction for example only is made up of the image that does not have data modification;

Figure 32 describes a kind ofly to be used to carry out establishment and the recording processing that comprises the content that is modified data, and the sketch map that is used to preserve the equipment disposition that the manufacturing of the information recording carrier of content handles;

Figure 33 is the sketch map of the flow chart of description of expression normal reproduction processing sequence of being accompanied by data transaction;

Figure 34 is the sketch map that description of expression is accompanied by special (at a high speed) reproduction processes flow chart in proper order of data transaction;

Figure 35 is that description of expression is shone upon through special reproduction management information table of application or an EP, is not accompanied by the sketch map of special (at a high speed) reproduction processes flow chart in proper order of data transaction;

Figure 36 describes one GOP wherein to be set or as the content of the non-view data that is modified data and the sketch map of an EP mapped data example in predetermined period;

Figure 37 describes one GOP wherein to be set or as the content of the non-view data that is modified data and the sketch map of an EP mapped data example in predetermined period;

Figure 38 describes GOP wherein to be set or as the sketch map of the reproduction processes example of the EP mapping of content application of the non-view data that is modified data to one in predetermined period;

Figure 39 describes GOP wherein to be set or as the sketch map of the reproduction processes example of the EP mapping of content application of the non-view data that is modified data to one in predetermined period;

Figure 40 be description of expression according to cycle information (N), carry out the sketch map of flow chart of the processing sequence of special (at a high speed) reproduction processes be not accompanied by data transaction;

Figure 41 be description of expression according to cycle information (N), carry out the sketch map of flow chart of the processing sequence of special (at a high speed) reproduction processes be not accompanied by data transaction;

Figure 42 be description of expression according to cycle information (N), carry out the sketch map of flow chart of the processing sequence of special (at a high speed) reproduction processes be not accompanied by data transaction;

Figure 43 be description of expression according to cycle information (N), carry out the sketch map of flow chart of the processing sequence of special (at a high speed) reproduction processes be not accompanied by data transaction;

Figure 44 describes a kind of block diagram that is used to carry out the function of the messaging device that special reproduction processes image height speed reproduces; And

Figure 45 is a sketch map of describing a kind of Hardware configuration example of the messaging device of carrying out application as main frame.

Embodiment

To describe in detail according to messaging device of the present invention, information recording medium manufacturing apparatus, information recording carrier and method and computer program with reference to accompanying drawing now.Notice that this description will carry out according to following.

1, the generation of content and recording processing, and a kind of manufacturing of information recording carrier is handled

2, the generation that is modified data is handled

The generation of 2-1, interrupt data is handled

The generation of 2-2, identifier collection translation data is handled

2-3, the translation data in the parallel method for using of configuration of DCT piece and arithmetic coding generate and handle

3, the storage data in an information recording carrier, and the processing overview in driver and main frame

4, about content management units (CPS unit)

5, content playback is handled

(5.1) content playback is handled example 1

(5.2) content playback is handled example 2

(5.3) content playback is handled example 2

6, comprise generation and reproduction processes example 1 corresponding to the content that is modified data of special reproduction

7, comprise generation and reproduction processes example 2 corresponding to the content that is modified data of special reproduction

8, the configuration of messaging device

At first, with generation and the recording processing described about content, and a kind of manufacturing of information recording carrier is handled.

With reference to Fig. 1, with describing about being kept at the configuration of a content in the information recording carrier, and the overview of reproduction processes.An information recording carrier 10 is the for example information recording carriers of Blu-ray disk (registered trade mark), DVD etc.; And be the information recording carrier (ROM disk etc.) that a preservation is authorized to content; It is made in disk manufactory under so-called content power holder's permission and suitable content power or region right of issue is arranged, perhaps one can record data information recording carrier (RE dish etc.).Attention is in following embodiment, and the magnetic disc type medium will be used as the example of descriptor recording medium, but the present invention can be applied to using the configuration of various types of information recording medium.

For example, AV (audiovisual) content is kept in the information recording carrier 10 as film.These contents are encrypted, and content playback is to have the reproduction of certain licence and the deciphering of the obtainable encryption key of equipment to be only possible afterwards through handling only to use by one.The special content reproduction processes will described after a while.The content that is kept in the information recording carrier 10 is not only encrypted, and meaningful configuration data has been replaced by the configuration that is modified data.

Fig. 1 representes to be kept at the configuration example of the recorded content 11 in the information recording carrier 10.The normal content data 12 that recorded content 11 is configured to not be modified and as through modification and the content that increases be modified data 13.Be modified data 13 and comprise data, interrupt data and the identifier collection modification data that embed in the stream.Interrupt data is through making original contents stand the ruined data of data processing, and is the data that generated by random number.Therefore, suitable content playback can't be carried out this content that comprises interrupt data 11.It is the data that are used to embed a player ID that the identifier collection is revised data, and the identifier collection is revised data and can be reproduced and need not to influence user's viewing or listen to.

In order to carry out content playback, need to use suitable content-data to substitute the interrupt data in the modification data 13 in being included in recorded content 11, to generate the processing of reproducing content 20.In a correction chart 15 that is recorded in the information recording carrier 10, registration is as the translation data corresponding to the content-data of separately modification data field.The messaging device (reproducer) that is used for carrying out content playback obtains to be registered in the translation data 21 in the correction chart 15 that is recorded in information recording carrier 10; Carry out and use the data that obtained in the interrupt data district, to substitute the processing that said data are reproduced content 20 with generation, and carry out and reproduce.The object lesson of correction chart will be described after a while, and the details of using the reproduction processes of correction chart.

Now; When generating reproduction content 20; Except using processing as the translation data 21 alternative modified data 13 of normal content data; Also use and comprise that enabling content reproducing device or content playback uses the processing that the identifier collection translation data 22 of data of analysis of the configuration bit of discernible identifying information (for example, player ID) substitutes the subregion of recorded content 10.For example, under the situation that the content of duplicating is without permission revealed, the identifier collection translation data of analyzing in the content of leaking 22 can make the source of unwarranted content seepage be determined.

Attention can be carried out a kind of scheme, and wherein correction chart is to be recorded in the information recording carrier through being set to a document that separates with content, or write down with the mode in some grouping within the configuration data that is dispersed in content.Using correction chart wherein is that for example as shown in Figure 2, correction chart is stored in the transmission stream packets that comprises content under the situation of the scheme that writes down of the mode in dividing into groups with within the configuration data that is dispersed in content some.Fig. 2 A representes the configuration of content-data.This content configuration is represented the content-data formed of MPTS (TS) by deciphering.MPTS is made up of the TS (MPTS) of predetermined quantity byte.Correction chart is cut apart and is recorded in a plurality of groupings of a part of dividing into groups as these TS.For example, as shown in the figure, correction chart is recorded in TS and divides into groups in 25,26 etc.Be used to preserve the example that the TS of correction chart divides into groups and comprise that the TS that contains the PMT (mapping table able to programme) that is provided with the mode that is dispersed in the content divides into groups, or the like.

Being recorded in the correction chart is the translation data (or identifier collection translation data) that is used for replaced processing by decryption content, and the record position of said translation data.

Being recorded in translation data in each correction chart has and is arranged near the record position of the TS that comprises each correction chart dividing into groups, for example shown in Fig. 2 B.For example, in the example shown in Fig. 2 B, there is the

grouping

27 and 28 of translation data posting field to be set near the grouping 25 that comprises correction chart.So be provided with and the data replacement handled under real time decrypting and the situation of reproducing content, to use translation data, and the detection that the TS of record correction chart divides into groups allows to be used for obtaining said translation data and to be recorded in the processing quilt execution effectively that writes (rewriting) said translation data on the position of table with analyzing and processing as the continuous processing after the deciphering.

Note preferably carrying out such scheme: wherein generating as shown in Figure 1 being included under the situation that is modified data 13 in the recorded content 11; Need use data processing to interrupt content to original contents, and the processing of the least possible data field is produced very big influence when the reproduction of content-data effectively.

That is to say that the data 13 that are modified that are included in the recorded content 11 shown in Figure 1 preferably are set at, on the position that can't be discerned by said processing small data district normal content image.

And on the other hand, identifier collection translation data 22 shown in Figure 1 is the translation data that in normal content, comprise an identifier, but this is with the translation data that is applied to content playback, therefore need not cause the equipment of the big variation of normal content.Hereinafter, with the generation of describing about content, and a kind of manufacturing of preserving the information recording carrier of content is handled.

Fig. 3 describes the generation comprise the content that is modified data, a kind of being used for an information recording carrier of preserving content is submitted to the messaging device of data recording and processing and the sketch map of handling at a kind of manufacturing information processed recording medium manufacturing equipment that is used to carry out information recording carrier.These equipment are at first imported and are recorded in for example film of a content material 30 in the information recording carrier, and in coding processing unit 31 for example, carry out for example mpeg encoded etc. of encoding process.Then, these equipment are carried out the multiplexed processing of TS grouping (for example video data and voice data) in a multiplexed processing unit 32, and add a PMT (mapping table able to programme) etc.Fig. 4 A representes the AV flow data configuration of and then multiplexed processing.In turn, pmt table shows mapping table data able to programme, and V representes video data, and A representes voice data.To be used as the posting field of wherein registering the correction chart of translation data with reference to the PMT that Fig. 2 describes.On this time point, correction chart does not produce as yet, therefore protocol failure FUT information in PMT.

One is modified Data Position and confirms that unit 33 confirms that the Data Position of contents carries out the data replacement to use translation data.That is to say, be modified Data Position and confirm that unit 33 confirms the position that is provided with of interrupt data, and will be replaced by identifier collection translation data content-data the position is set.Note as stated; The configure interrupt data the position is set so that the processing of as far as possible little data field is caused big influence when the reproduction of content-data effectively, and the position that is provided with that the identifier collection is modified data is the position that does not greatly influence normal content.Concrete example about these will described after a while.For example, the video data shown in Fig. 4

B

41 and 42 is confirmed as and is modified Data Position.

Then, a correction chart generation unit 34 generates a correction chart of wherein registering translation data.That is to say that correction chart generation unit 34 generates a correction chart, wherein registers the translation data as the target that will replace with the translation data that is configured to the content configuration data.Notice that this correction chart also preserves the identifier collection translation data that identifying information that content reproducing device or content playback are used can be analyzed, and correction chart generation unit 34 is also carried out the processing of the said identifier collection translation data of generation.

To carry out description with reference to Fig. 5 now about the data configuration that is recorded in a correction chart in the information recording carrier.For example, be recorded in a data conversion table in the information recording carrier data configuration shown in Figure 5 is arranged.That is to say that this table has following data:

Revise number of entries (Number of FixUpEntry): translation data number of entries (correction number of entries)

Revise entry length (FixUPEntry LENGTH): the byte length of translation data clauses and subclauses (byte length of correction clauses and subclauses ()=(N+6))

SPN (source packet numbering): translation data writes the packet numbering (from the absolute conversion packet numbering of beginning of AV stream document) of original position of AV stream document of grouping

Byte offsets (BYTE OFFSET): byte offsets is illustrated in by the translation data within the grouping of SPN appointment and writes original position (the start byte position of translation data in grouping)

Player ID bit position (play_id_bit_position): the bit position (bit position of the player ID that expression is used to distinguish) of a distinguishing mark (for example player ID)

Revise data (FixUp DATA): conversion rewrite data (value that will be rewritten (N byte is converted into a TS and divides into groups))

A large amount of interrupt data are distributed within the content with the mode of disperseing, and the translation data of service recorder in correction chart rewritten these positions of interrupt data.And; Even use the identifier collection translation data of the data comprise that the configuration bit that makes content reproducing device or content playback use the identifying information (for example player ID) that can be analyzed can be identified, still a large amount of writing positions need be set within a content-data.Correction chart is set to a table that wherein writes down as the details of the writing position of " the conversion rewrite data " of the solid data of following clauses and subclauses and these data:

(a) be used for converting interrupt data to be authorized to content-data translation data, and

(b) identifier collection translation data.

Attention is within a content, and correction chart (FUT) can be divided into a plurality of PMT position and by record.The correction chart that is recorded in the information recording carrier can be divided into the correction table block as the part configuration data of correction chart, and is recorded within the content with the mode of disperseing.These are revised table block submit to Fuzzy Processing, each piece is used the calculating of for example AES encryption, XOR calculating etc.

The messaging device that is used to carry out content playback causes that the safe VM that is arranged on the messaging device side revises table block (FUT piece) to each and carries out decryption processing or predetermined computing; To obtain correction chart, obtain translation data then as each piece of plain text data.Safe VM before content playback or output are handled and during, carry out these processing off and on.The details of this processing will described after a while.

To carry out being recorded under the situation within the content description of a data configuration example of correction chart with reference to Fig. 6 to 8 now about being divided at correction chart as the correction table block of the part configuration data of correction chart and with the mode of disperseing.

Fig. 6 representes the complete data configuration of correction chart; Fig. 7 representes to be included in a data configuration of revising table block (FUT piece) of a plurality of correction table blocks (FUT piece) within the correction chart, and Fig. 8 is illustrated in a data configuration of revising translation data clauses and subclauses within the table block (FUT).

As shown in Figure 6, correction chart comprises following data:

FUT number of blocks: correction chart number of blocks

FUT block length a: byte length of revising table block

SP_No: (relevant) secret parameter (SP) quantity with the SP that generates by VM

A SPN who is used for the FUT piece: distribute to a packet positions of revising table block

FUT piece (): revise table block (using different parameters to handle (bluring) each piece)

Correction chart comprises a plurality of correction table blocks (FUT), and these a plurality of correction table blocks (FUT) are all submitted to the XOR computing of using different secret parameter (SP1, SP2, SP3 or the like).

Fig. 7 representes to be included in a data configuration example of a plurality of correction table blocks (FUT piece) within the correction chart shown in Figure 6.In these correction table blocks (FUT piece) each all is recorded in the for example TS grouping 25 with reference to Fig. 2 description.As shown in Figure 7, revise table block for one and comprise following data:

Correction number of entries in this piece: the quantity of translation data (comprising identifier collection translation data)

Be used to revise the basic SPN of clauses and subclauses: a position of dividing into groups as the base of the index of translation data record position (packet numbering)

Revise clauses and subclauses (): translation data clauses and subclauses (using secret parameter to handle (bluring))

Fig. 8 representes to be included in a data configuration example of the translation data clauses and subclauses (correction clauses and subclauses) in the correction table block shown in Figure 7.As shown in Figure 8, translation data clauses and subclauses (correction clauses and subclauses) comprise following data:

Type indicator (type_indicator): type identifier [00: do not have conversion, 01b: use translation data to handle 10b, 11b: use identifier collection translation data to handle]

FM_ID bit position: corresponding to the sign bit position of the player ID of identifier collection translation data

Relevant SPN: the packet positions of applied transformation data (from a packet numbering of preserving in the mapping table able to programme (PMT) that divides into groups)

Byte location: the translation data record position within a grouping

Rewriting value: translation data (comprising identifier collection translation data)

Relevant SPN_2: the packet positions (from the packet numbering of a PMT grouping) of using second translation data

Byte location _ 2: (corresponding to second translation data) the translation data record position within a grouping

Rewriting value _ 2: the second translation data (comprising identifier collection translation data)

Translation data clauses and subclauses comprise these data.

Correction chart is set to write down about the correction chart that positional information and translation data content are set as the translation data of the target that will be replaced by the partial content data, and carries out data transaction through carrying out a data conversion treatment program that comprises the order that the replacement of using this correction chart to carry out the content configuration data is handled.

The information [type indicator] that is included in the translation data clauses and subclauses (correction clauses and subclauses) in the correction table block shown in Figure 8 is a type identifier, and whether its register information that is used to discern correction chart is

(a) according to the register information that is used for interrupt data is converted to the translation data that is authorized to content-data, perhaps

(b) according to the register information of the identifier collection translation data that is used to embed the identifying information that reproducer or content playback use.

In the register information zone of correction chart is under the situation according to the register information zone of the identifier collection translation data that is used to embed the identifying information that reproducer or content playback use; The identifying information of using according to content reproducing device or content playback and the translation data used selectively; That is, identifier collection translation data is registered as the table register information.

Register information [FM_ID bit position] is by with reference to the positional information with the bit of definite tupe in reproducer or the identifying information of being made up of a plurality of bits that reproduce to use.For example; Confirm tupe with reproducer or the identifying information of forming by a plurality of bits that reproduce to use; By under with reference to situation with the bit value of the bit promising 1 of confirming tupe, carry out the identifier collection that uses the identifier collection translation data that is registered in the correction chart to replace within the content configuration data and revise data, but under by the situation of the bit value of the bit of reference promising 0; Do not carry out replacement, thereby carry out data transaction.

Attention can be carried out a kind of scheme, wherein under reference bits is 0 situation, carries out conversion, but under 1 situation, does not carry out conversion.And; Can carry out a kind of scheme; Be that translation data and the translation data under the situation 1 under 0 the situation is set to independent translation data respectively wherein, and depend on the circumstances, translation data is set selectively according to the bit value of reference bits in reference bits.

Note comprising a plurality of correction table blocks (FUT), and these a plurality of correction table blocks (FUT) are all submitted to XOR computing or the encryption of using different secret parameter (SP1, SP2, SP3 or the like), and quilt is preserved according to the correction chart of this processings example.That is to say; In this processing example; Correction chart is stored in the information recording carrier as a document data independently, but as described with reference to Fig. 6 to 8, comprise a plurality of correction table blocks (FUT); And each of these a plurality of correction table blocks (FUT) is all submitted to the XOR computing of using different secret parameter (SP1, SP2, SP3 or the like) respectively, and is preserved.Secret parameter is made up of for example 128 Bit datas.Use the processing of these parameters and will use description after a while.

After the correction chart of translation data was wherein registered in 34 one of the generation of correction chart generation unit, a correction chart record PMT confirmed 35 definite positions of wherein registering the PMT (mapping table able to programme) of correction chart (FUT), unit.As stated, within a content, correction chart (FUT) can be divided into a plurality of PMT position, and by record.For example, shown in Fig. 4 (c), PMT 43 is chosen as the record position that wherein writes down corresponding to the correction chart of the translation data of

video data

41 and 42.

A correction chart recording processing unit 36 writes down correction chart in the PMT that is confirmed to confirm unit 35 by correction chart record PMT.Then, one is modified the data corruption processing that the interrupt data of data generating unit 37 in being included in the content Data Position is provided with position execution content-data, wherein carries out by being modified Data Position and confirms unit 33 established datas replacement.For example, shown in Fig. 4 D, carry out the data corruption of the video content of

video data

41 and 42 and handle.Then, a cryptographic processing unit 38 performs encryption processing according to predetermined order, and data record cell 39 executive logging processing on a disk, thereby generates a wherein disk 10 of recorded content.The processing of attention in data record unit 39 comprises the processing that for example original disk manufacturing, stamp device are made and passed through stamp generation disk.

2, the generation that is modified data is handled

According to above-mentioned processing, make the disk that the information recording carrier that comprises the content that is modified data is wherein write down in a conduct.Then, will be modified data, promptly be used to generate the object lesson of the processing of interrupt data and identifier collection translation data with reference to descriptions such as Fig. 9.As described with reference to Fig. 3; Be modified Data Position and confirm that unit 33 confirms that the Data Position of contents carries out the data replacement to use translation data; And correction chart generation unit 34 generates and will be interrupted the translation data that data substitute; And identifier collection translation data (rewriting value 1 among Fig. 8 and rewriting value 2), generate the correction chart of wherein registering these data then.And, be modified data generating unit 37 subregions of destruction within a content and be modified data to generate interrupt data and identifier collection.Note bit value according to player ID; It is the data that substitute by (or can't by) identifier collection " conversion " data that the identifier collection " is modified " data, and the identifier collection to be modified data and identifier collection translation data all be to be enough to the data (data of ability normal reproduction) of being watched and listening to by the user.

(generation of 2-1, interrupt data is handled)

As stated, preferably configuration is used to destroy the interrupt data of image, so that the processing of an as far as possible little data field is caused big influence when the reproduction of content-data effectively.That is to say, be included in that interrupt data 13 in the recorded content shown in Figure 1 11 is preferably disposed on position so so that because the processing that the small data district is carried out and can't discern normal content images.For example, in the example of Fig. 8, translation data is set is 5 bytes (40 bit) and the modification of carrying out being enough to destroying image information is set is to cater to the need.Be modified data generating unit 37 subregions of destruction within a content to generate interrupt data in view of the above.Being modified modification that data generating unit 37 uses the dispensing unit of the mpeg encoded data of the TS that wherein is included in a component content in dividing into groups to be set to the data modification processing unit handles to generate and is modified data.

Recorded content about information recording carrier is a content of for example being submitted to mpeg encoded.Hereinafter, with the example of describing about a processing, it uses the MPEG2 coding method, and DCT piece of for example additional generation, and MPEG4-AVC coding method for example are used for carrying out arithmetic coding at elementary area, generate interrupt data.

(a) use a kind of processing that its coding method of using a DCT piece configuration is generated interrupt data.

To its coding method of using a DCT piece configuration for example is, the MPEG2 compressing image data, and it is to be celebrated as being used to realize the technology of high-definition image compression process.The MPEG2 compression method is through generating the data compression method that DCT [discrete cosine transform] piece that the correlation of a use in a screen compress is realized.This is a kind of the combination as according to the motion compensation of the compression of correlation between the screen and as the compression method according to the Huffman coding of the compression of coded strings correlation.Under the situation of MPEG2; Use motion compensation to carry out predictive coding; Therefore shown in Fig. 9 A; The picture frame of component movement image is divided into three kinds of compositions that are called I image, P image and B image, and adopts a GOP (image sets) configuration as a group of being made up of a scheduled unit I image, P image and B picture frame.

Using inside field to encode and create I image (intra-coded picture), is the image frame data that need not to carry out according to previous image predictive coding therefore.When screen only shows the image that uses the predictive coding establishment, can't display screen in moment in response to random access.For this reason, can be through handling random access according to ground establishment access cycle image.In other words, the I image is the independence that is used to keep GOP.

The data volume of an I image is equivalent to the twice to three times of a P image, and is equivalent to five times to six times of a B image.GOP refers to the picture group picture from an I image to next I image.Therefore, between the image within this group, carry out image prediction.P image (predictive-coded picture) is through carrying out the image that predictive coding is created from previous image, and according to the I image creation.With respect to I image, be " frame interior semi-directional predictive-coded picture " with the P image specification as " frame interior coded image ".B image (bidirectional oriented predictive-coded picture) is " a bidirectional oriented predictive-coded picture ".The B image is to create through predicting from previous and two I images following or P image.

Under the situation of the data compression method that is used for generating DCT [discrete cosine transform] piece that is applied in MPEG2, each view data is configured to a plurality of fragments for example shown in Fig. 9 B, and each fragment further is configured to a plurality of macro blocks.Can be through any in for example macroblock unit, slice unit, elementary area and the GOP unit be set, the data corruption that is used to generate interrupt data is handled.

In these relevant processing units, shown in figure 10, it is effective generating interrupt data through destruction data in slice unit.Especially,, make the reduction and the reproduction that are included in the view data at least one fragment become impossible through destroying the zone that (data processing) is included in the header in the fragment (frag info), thus and the effective destruction that can realize view data.Especially, the generation of interrupt data is to carry out data processing through some byte to tens bytes that use is included in the header in the fragment (frag info) as the unit to carry out.

(b) use a kind of coding method to generate the processing of interrupt data to its applied arithmetic coding

Then, will describe about one with reference to Figure 11 and be used for carrying out arithmetic coding, for example use under the situation of MPEG4-AVC coding, generate the example of the processing of interrupt data at elementary area.Even under the situation of arithmetic coding (for example MPEG4-AVC); As previous MPEG2 coding; Picture frame is divided into I image, P image and B image; Similarly adopt GOP (image sets) is configured to a group of being made up of a scheduled unit I image, P image and B picture frame, but under the situation of using the MPEG4-AVC coding, a frame of video is recorded as the coded data of I image.

For example, shown in Figure 11 A, suppose to adopt a kind of wherein with of the encoding process configuration of complete I image as an arithmetic code block.Perhaps shown in Figure 11 B, a kind of encoding process configuration that wherein the I image is divided into a plurality of arithmetic code blocks can be set.

Under the situation of coded data being submitted to the data corruption processing of using this arithmetic coding, carry out the generation of interrupt data through in the arithmetic coding module unit, destroying data.Especially, carry out data processing as the unit, carry out the generation of interrupt data through using some byte to tens bytes of from an arithmetic code block, selecting, thus can not arithmetic code block of reduction.Under the situation of arithmetic coding, the range of choice that is interrupted data is very wide, the position that this helps specified data to destroy.

(c) image in interrupt data generates is selected to handle

Note no matter using an arithmetic coding that uses to describe with reference to the configuration of DCT piece or the encoding process of Fig. 9 and 10 descriptions in any case, the image that is chosen as interrupt data preferably is included in the I image among each GOP with reference to Figure 11 at coding.

Shown in figure 12; The I image that is included among the GOP that is made up of the I that produces along with mpeg encoded, P and B image is; As described with reference to above-mentioned Fig. 9; Being created by inside field coding, and be the data that comprise the reference data in the GOP unit, is the data that comprise by the information of P image within same GOP or the reference of B image institute simultaneously.Therefore, through revising (destruction) I image, P and B image that reduction is included among the GOP become impossible, thereby and the zone that more hi-vision frame scope conduct can not be reduced can be set.

(generation of 2-2, identifier collection translation data is handled)

Then, will wait the description of carrying out about the generation processing of identifier collection translation data with reference to Figure 13.That is to say that this processing is to be registered in the generation of the identifier collection translation data 22 in the correction chart shown in Figure 1 15 to handle.As stated, correction chart generation unit shown in Figure 3 34 generates a wherein correction chart of the identifier collection translation data that can be analyzed of registration identifying information that content reproducing device or content playback are used.Preferably configuring identifier collection translation data greatly influences normal content to be unlikely.This is because through using the partial data of translation data replacement, identifier collection translation data is applied to content playback, and is worthless through increasing the discernible change that identifier causes visually taking place content-data.

(a) use a kind of processing that its coding method of having used the configuration of DCT piece is generated identifier collection translation data.

To carry out about using a kind of description that its coding method of having used the configuration of DCT piece is generated the processing example of identifier collection translation data with reference to Figure 13 now.As stated; In the MPEG2 method, promptly carry out under the situation of data compression through generating a DCT [discrete cosine transform] piece, be a plurality of fragments with each image configurations in I, P and the B image; For example shown in Figure 13, and each fragment further is configured to a plurality of grand determine.

According to identifier (for example, player ID), this coded data will receive data modification.In order not influence data modification processing, for example on the level of the high fdrequency component that slightly changes the DCT coefficient, within a macro block configuration, carry out to revise and handle the about-face of content.For example, use some byte to tens bytes to carry out data processing, thereby the modification of carrying out the high fdrequency component that slightly changes the DCT coefficient is handled as the unit.Whether analyze the DCT coefficient and can determine whether it is a DCT piece that wherein embeds identifier, be a DCT piece that does not wherein embed identifier perhaps.

Along with content playback; Even under the situation that the DCT piece that wherein embeds identifier according to reproduces; Even under the situation that the DCT piece that does not wherein embed identifier according to reproduces; Modification is in the level that slightly changes high fdrequency component, thereby is difficult to it is identified as visual about-face, so this quality that does not cause picture quality reduces.

(2-3, translation data in the usage is generated handle) DCT piece configuration and arithmetic coding parallel

Then, will describe about using the parallel generation processing example that makes usage come translation data of configuration of DCT piece and arithmetic coding with reference to Figure 14.Under the situation of arithmetic coding (for example MPEG4-AVC), as stated, as the MPEG2 coding, picture frame is divided into I image, P image and B image.Similarly adopt GOP (image sets) configuration as a group of forming by a scheduled unit I image, P image and B picture frame, but frame of video is registered as the coded data of piece image.

Under the situation of this arithmetic coding processing configuration in elementary area, influenced entire image according to the data modification of identifier, this is more worthless.Under the situation of arithmetic coding, even the data replacement of a byte is arranged, reproduced image also can take place in the arithmetic code module unit destroy, so this and be not suitable for embedding data.Can reduce the size (minimum is a fragment) of arithmetic code block, but this can cause the problem that code efficiency worsens.

The image setting that therefore, preferably will wherein embed identifier is the coded data that a DCT piece configuration is arranged.For example, shown in figure 14, use the parallel usage that makes of configuration of DCT piece and arithmetic coding to encode.That is to say that I and P image adopt arithmetic coding, and the B image adopts the configuration of DCT piece.Revise the macro block of the DCT piece of B image, so that embed an identifier.Along with this set, embedding an identifier does not influence other image, thereby stops the quality of picture quality to reduce.

Then, with describing the storage data of information recording carrier that comprise the content of above-mentioned interrupt data about a kind of preservation, and in the driver of the reproduction processes of the memory contents of carrying out this information recording carrier and the processing overview in the main frame.Figure 15 representes the configuration of information recording carrier 100, a kind of driver 120 and a kind of main frame 150 of a content of a kind of preservation.Main frame 150 is that for example a kind of data reproduction of in a messaging device (for example PC etc.), carrying out (or record) is used, and according to predetermined data processing sequence, use this messaging device for example the hardware of PC etc. handle.

Information recording carrier 100 is information recording carriers of a kind of for example Blu-ray dish (registered trade mark), DVD etc., and is that a kind of wherein record comprises the above-mentioned information recording carrier that is modified the content of data.Shown in figure 15; Information recording carrier 100 is preserved an encrypted content 101 that receives encryption and partial data replacement processing; A MKB (media key block) 102; It is as the encryption key block that generates according to (being called as broadcast encryption method) tree encryption key distribution method; One is the title key file 103 that the data of encrypted (the CPS unit key of encryption) etc. are formed by wherein being applied to title key that contents decryption handles; Comprise as 104, one of the service regeulations of the CCI (copy control information) of the duplicating of content etc./reproduction control information and wherein register correction chart 105, and one comprises that the data of the registration that is used to use correction chart 105 carry out the data conversion treatment program 106 of the processing command of data conversion treatment corresponding to the translation data of the replacement data of the presumptive area within the content.Notice that illustrated data example is an example, store the type of data based dish etc., more or less different.Hereinafter, will carry out description about the overview of said various types of information.

The content 101 of (1) encrypting

In information recording carrier 100, preserve various types of contents.The example of content comprises that movie contents for example flows, has by the games of the form of specific criteria regulation, image file, voice data, text data or the like as the AV (audiovisual) of HD (high definition) movie contents of high-definition movie data.These contents are the data by specific AV format specification, and preserve according to specific AV data format.Especially, for example,, said content is saved as Blu-ray dish (registered trade mark) ROM normal data according to Blu-ray dish (registered trade mark) ROM reference format.

Further, have games, image file, voice data, text data etc. are kept at the situation in the service data for example.Have these contents are saved as not the data conditions according to the data format of specific AV data format.

The type of content comprises various contents for example music data, film, rest image and similarly view data and games, Web content or the like; And various forms of information are included in these contents, for example only the data of origin self information recording medium 100 can with content information, through self information recording medium 100 data and in future from the data that the server that is connected to network the provides available content information that combines.The content that is kept in the information recording carrier is to use the different keys (CPS unit key or unit key (perhaps also can be called as title key)) that are suitable for each partial content to encrypt and preserve, to realize the different use control to each partial content.The specified unit of each unit key is called as content management units (CPS unit).Further; The configuration data of content is set to be modified data; Wherein its part data (interrupt data) or identifier collection of being different from correct content-data is modified data and replaces; Therefore decryption processing itself can not be reproduced correct content, and the processing that is used for using the data that are registered in correction chart to substitute interrupt data be reproduce necessary.

(2)MKB

MKB (media key block) 102 is encryption key block that generate according to a kind of tree encryption key distribution method that is called as broadcast encryption method.MKB 102 be one only through handling (deciphering), can obtain the key information piece of the necessary media key of decryption content [Km] according to the Device keys [Kd] that is kept in the user's who holds valid license the messaging device.This is one it has been used the application according to the information distributing method of so-called hierarchical tree structure; Make can be only under subscriber equipment (messaging device) is held the situation of valid license, to obtain media key [Km], and the subscriber equipment of invalid (cancelling processing) can not obtain media key [Km].

Administrative center as the licence entity can generate a MKB; It has to use and is kept at the structure that the Device keys in certain subscriber equipment is deciphered; Promptly wherein be used for the Device keys of encrypting storing, can't obtain the necessary media key of contents decryption at the key information of MKB through change.Therefore, can cancel unwarranted equipment at any time, thereby only the encrypted content that can decipher is provided to the equipment of holding valid license.To describe contents decryption after a while handles.

(3) title key file

As stated, perhaps a plurality of content groups are encrypted in each, each (title key (CPS unit key)) used independently encryption key with the use of organize content, and be kept in the information recording carrier 100.That is to say; With AV (audiovisual) stream of component content, music data, film, rest image with similarly view data, games, Web content etc. are divided into a plurality of administrative units that content is used; The different title key that the unit of each division is generated, thus decryption processing carried out.The information that is used to generate these title key is the title key data, and through using title key that a key by generations such as for example media keys deciphers an encryption to obtain title key.Use the title key data according to the predetermined encryption key genesis sequence, generate title key, and carry out the deciphering of content corresponding to each unit.

(4) service regeulations

Service regeulations comprise, for example duplicate/reproduction control information (CCI).That is to say that this is copy limit information and the reproducing limit information that is used for corresponding to the use control of the encrypted content that is kept at information recording carrier 100 101.Have duplicating/the various settings of reproduction control information (CCI), for example be set to the situation of information of the independent CPS unit of content management units, situation about being provided with corresponding to a plurality of CPS unit, or the like.

(5) correction chart

As stated, the encrypted content 101 that is kept in the information recording carrier 100 has received predetermined the encryption, is to be modified data (interrupt data or the identifier collection that are different from correct data are modified data) with a part of content configuration data configuration simultaneously.In order to reproduce content, need data rewriting to handle, wherein be modified data and be replaced by translation data as correct content-data.Said table of wherein having registered translation data is a correction chart 105.Be modified data in a large number and be set to be dispersed in content everywhere, and when reproducing content, it is essential using the translation data that is registered in the correction chart to substitute the processing that (rewriting) many be modified data.Using said translation data for example refers to; Even carrying out under the situation of unwarranted contents decryption owing to encryption key leaks; Because the existence of alternate data only can not be reproduced correct content through contents decryption, can be prevented from thereby unwarranted contact is used.

Except normal translation data, correction chart 105 also comprises containing can analyze data identification information configuration bit so that content reproducing device or content playback are used the translation data of the data that can be identified.Especially; For example; This comprises a player ID, and it is the player identification data of (being used to carry out the equipment of host application program), identifier collection translation data record identification information, conduct " translation data that comprises identifier " that perhaps generates according to player ID.Identifier collection translation data is wherein as stated, and the bit value slight modification of correct content-data is not to influence the data of content playback level.

Although noting example shown in Figure 15 is that correction chart 105 is set to an independently data file; As stated; Can carry out a kind of scheme, wherein correction chart is not set to independently document, but is included within the configuration packet of encrypted content 101 with the mode of disperseing.

(6) data conversion treatment program

Data conversion treatment program 106 is one and comprises that the data of the registration that is used to use correction chart 105 carry out the program of the processing command of data conversion treatment, and used by the main frame of carrying out content playback.This is to carry out through a data conversion processing unit 154 of the main frame among Figure 15 100.

Main frame is provided with a virtual machine (VM) and carries out data conversion treatment; And virtual machine (VM) is carried out the data conversion treatment program 106 that from information recording carrier 100, reads, and submits the content and the part configuration data thereof of deciphering to the data conversion treatment of the data of using correction chart 105 registrations.To carry out description after a while about the details of these processing.

Then, will main frame 150 and the configuration of driver 120 and the overview of processing be described with reference to Figure 15.When data are transferred to main frame 150 via driver 120, carry out the reproduction of content that is kept in the information recording carrier 100 and handle.Before using said content; Between driver 120 and main frame 150, carry out mutual authentication processing, and according to the affirmation of validity and both sides through setting up the affirmation that this checking is handled, the content of encrypting is transferred to main frame from driver; Carrying out contents decryption at host computer side handles; And further, carry out the data conversion treatment of describing hereinbefore by correction chart, thereby carry out content playback.

For the mutual checking of between main frame 150 and driver 120, carrying out; Through each equipment of sending by administrative center with reference to one or use whether be registered as unwarranted equipment or application cancel (invalid) tabulation, carry out the processing that is used for confirming validity.

Driver 120 is useful on the memory 122 of the host C RL (certificate revocation list) that preserves (invalid) information of cancelling that comprises host credentials (public key certificate).And on the other hand, main frame 150 is useful on the memory 152 of the driver CRL (certificate revocation list) that preserves (invalid) information of cancelling that comprises driver certificate (public key certificate).Said memory is nonvolatile storage (NVRAM); And be to upgrade under the situation of version for example at the CRL that from information recording carrier 100, reads; 121 and 151 of their data processing units separately carry out update processing, in

memory

122 and 152, to preserve the host C RL or the driver CRL of redaction.

CRL, for example host C RL or driver CRL are upgraded by administrative center unchangeably.That is to say that under the situation of new discovery unauthorized devices, the CRL of a renewal of issue has wherein increased device id with new clauses and subclauses or the certificate ID that issues to unwarranted equipment etc.Each CRL has version number, and the configuration that can new and old edition be compared is arranged.For example, more under the news, driver carries out the CRL update processing to the CRL that in the information recording carrier from be placed on driver, reads than the CRL in the memory 122 that is kept within the driver.Likewise, main frame 150 also carries out driver CRL renewal.

Except that said CRL update processing; The data processing unit 121 of driver 120 is also handled with the checking that main frame carries out when using content, carrying out; And further, be used for transmitting the processing of data from the information recording carrier reading of data with to main frame.

As stated, main frame 150 is that for example a kind of data reproduction of for example carrying out among the PC etc. at a messaging device (or record) is used, and according to predetermined data processing sequence, use this messaging device for example the hardware of PC etc. handle.

Main frame 150 has a data processing unit 151 that is used to carry out with the mutual authentication processing of driver 120, Data Transmission Controlling etc.; A decryption processing unit 153 that is used to carry out the decryption processing of encrypted content; One is used for according to the data in 105 registrations of above-mentioned correction chart; Carry out the data conversion treatment unit 154 of data conversion treatment, and the codec processing unit 155 that be used to decode (for example, mpeg decode) handled.

Data processing unit 151 is carried out checking and is handled between main frame and driver, and within checking is handled, with reference to being kept at as the driver CRL among the memory a152 of nonvolatile storage (NVRAM), to confirm that driver is not reversed driver.Main frame also carries out update processing in memory a152, to preserve the driver CRL of redaction.

Decryption processing unit 153 uses the data that are kept at the various types of information among the memory b156 and from information recording carrier 100, read, and carries out the decryption processing of encrypted content 101, and generation will be applied to the key of contents decryption.Data conversion treatment unit 154 is applied in the translation data of registering in the correction chart that from information recording carrier 100, obtains, and according to the data conversion treatment program that from information recording carrier 100, obtains, carries out the replacement of content configuration data and handles (rewriting).Codec processing unit 155 decode (for example mpeg decode) handle.

The memory b156 of messaging device 150 preserves Device keys a: Kd, with the key information that is applied to mutual authentication processing, with being applied to key information of deciphering or the like.The details that contents decryption is handled will be described after a while.Said Device keys: Kd is with being applied to the key that above-mentioned MKB handles.MKB is a key information piece; It can obtain media key [Km]; This is the necessary key of decryption content; Only just can obtain, and in the enabling decryption of encrypted content, messaging device 150 application are kept at the Device keys among the memory b156: Kd and carry out the MKB processing through handling (deciphering) according to the Device keys [Kd] in the messaging device that is kept at the user who holds valid license.The details that contents decryption is handled will be described after a while.

4, about content management units (CPS unit)

As stated, the content that is kept in the information recording carrier is submitted to decryption processing and used the different keys that are suitable for each unit to preserve, so that realize different use control each unit.That is to say that content is divided into content management units (CPS unit), carries out independently decryption processing, and carries out independently use and management.

When using content; At first; Need to obtain a CPS unit key (also being called as title key) that is suitable for each unit, and further, through carrying out data processing in proper order according to predetermined decryption processing; Use other key that needs, key generation information etc., to reproduce.The setting of a content management units (CPS unit) will be described with reference to Figure 16 now.

Shown in figure 16, have (A) index 210, (B) movie object 220, (C) playlist 230 and (D) hierarchical arrangement of segment 240 in said.Specify the index for example will be by the title that reproduces application access; Specified the playback program relevant with said title; For example relevant with said title playback program is designated, and selects regulation to reproduce the playlist of content order according to the program information of appointed playback program.

Playitems playitem is included in the playlist as the data message that will be reproduced.Read the AV stream as the real data of content selectively through clip information, perhaps order reproducing by the part that is included in the playitems playitem regulation in the playlist, and is carried out reproduction of AV stream and fill order processing.Note existing a large amount of playlists and playitems playitem, and each all there are corresponding playlist ID and playitems playitem ID as identifying information.

Figure 16 representes two CPS unit.These compositions are kept at the part of the content in the information recording carrier.In CPS unit 1271 and the CPS unit 2272 each all is to be set to comprise that a title as index, movie object as the playback program file, playlist and one comprise the CPS unit as the unit of the segment of the AV stream document of actual content data.

Content management units (CPS unit) 1271 comprises title 1211 and title 2212,

playback program

221 and 222,

playlist

231 and 232, segment 241 and segment 242; And are the target datas of encrypting as the AV flow data document 261 and 262 that is included in the content real data in said two

segments

241 and 242 at least; Thereby being set to use a title key (Kt1) ciphered data, wherein said title key (Kt1) is the encryption key (also being called as the CPS unit key) of setting corresponding to content management units (CPS unit) 1271 normally.

Content management units (CPS unit) 2272 comprises one as the application 1 of index 213, playback program 224, playlist 233 and a segment 243; And encrypt using a title key (Kt2) as the AV flow data document that is included in the content real data in the said segment 243 263, wherein said title key (Kt2) is an encryption key that is provided with corresponding to content management units (CPS unit) 2272.

For example; Concerning the user; Handle corresponding to the application file of content management units 1271 or content playback in order to carry out one, need to obtain, and it is submitted to decryption processing as the title key Kt1 that is provided so that the encryption key relevant with content management units (CPS unit) 1271.Concerning the user; Handle in order to carry out a application file or a content playback corresponding to content management units 2272; Need to obtain as the title key Kt2 that is provided so that the encryption key relevant, and it is submitted to decryption processing with content management units (CPS unit) 2272.

Figure 17 representes that the CPS unit is provided with configuration, and the example of corresponding title key.Figure 17 is illustrated in as the CPS unit that is used for managing the unit that the encrypted content that is kept at information recording carrier uses and the unit is set and is applicable to the correlation between the title key (CPS unit key) of each CPS unit.CPS unit and the data of title key to be used for occurring after a while can be preserved and be provided with in advance to attention.For example, data division 281 is clauses and subclauses of the data that are used for occurring after a while.

It is of a great variety that the CPS unit is provided with the unit, for example content title, application, data set or the like, and each CPS Single Component Management table CPS unit ID wherein is set to the identifier corresponding to each CPS unit.

In Figure 17, for example title 1 is CPS unit 1, and when deciphering belonged to the encrypted content of CPS unit 1, it was essential generating title key Kt1 and carrying out decryption processing according to the title key Kt1 that is generated.

Like this, the content that is kept in the information recording carrier 100 is preserved with the mode of being submitted to the encryption of using the different encryption keys that are suitable for each unit, so that realize different use control each unit.UR (service regeulations) to each content management units (CPS unit) is set to carry out for independently use and management of each content management units (CPS unit).As stated, service regeulations are information, and it comprises for example duplicating/reproduction control information (CCI) of content, and are included in the copy limit information or the reproducing limit information of the encrypted content in each content management units (CPS unit).

The data processing that application is kept at the various types of information in the information recording carrier is that title key of generation is necessary.To describe the special case of this processing after a while in detail.

5, content playback is handled

Hereinafter; To carry out description about a plurality of processing examples under the situation of carrying out mutual authentication processing between driver and the main frame; If checking is set up; The content that is kept in the information recording carrier that is positioned in the driver is transferred to main frame from driver, handles thereby carry out content playback.

(5.1) content playback is handled example 1

At first, will carry out handling the description of example 1 with reference to Figure 18 about content playback.Figure 18 representes an information recording carrier 310 of preserving encrypted content from left; One wherein is provided with information recording carrier 310 so that carry out the driver 330 that data read; And a main frame 350, it links to each other with said driver so that can carry out data communication and also carry out the reproduction application of wherein carrying out reproduction processes through the content that driver 330 obtains to be kept in the information recording carrier 310.For example in a messaging device (for example PC etc.), carry out main frame 350.

Information recording carrier 310 is preserved the content 313 of 311, title key documents of MKB (media key block) 312, an encryption, a correction chart 314 and a data conversion processor 315.Main frame 350 is deposited a Device keys 351 and is handled to be applied to MKB.

Main frame wherein shown in Figure 180 350 obtained and be reproduced in the memory contents within the information recording carrier 310 via driver 330 processing sequence will be described now.At first, before the memory contents in reading information recording carrier 310, main frame 350 is carried out checking each other with driver 330 in step S101.Handle said mutual checking to confirm whether main frame and driver all are equipment or the application software that are authorized to.Can various types of processing be applied to said mutual authentication processing order.Referring now to Figure 19 one of them example is described.

Figure 19 is an example according to the mutual checking order of key encrypt method.At first, in step S121, driver 330 sends driver public key certificate and a random number that generates arbitrarily in the memory (NVRAM) that is kept at oneself to main frame.In step S122, main frame 350 also sends host public key certificate and a random number that generates arbitrarily in the memory (NVRAM) that is kept at oneself to driver.

In step S123, driver 330 is verified from the validity of the host public key certificate of main frame reception, and (host C RL: certificate revocation list) quilt of checking main frame is cancelled state according to the host credentials revocation list.In step S123, driver 330 is at first carried out the signature verification that in the host public key certificate, is provided with.ECDSA_V shown in Figure 19 representes to carry out signature verification according to elliptic curve cryptography.Carry out said signature verification through application corresponding to the PKI of the private key of a key management entity.The PKI that driver keeps the key management entity to be carrying out signature verification in memory (NVRAM), and uses said PKI and carry out signature verification.According to said signature verification, confirm that the host public key certificate is not distorted.According to said signature verification, confirming that driver 330 stops to handle under the situation that the host public key certificate has been altered.

Further, driver 330 is according to the host public key certificate that wherein not have removing to alter, and confirms that with reference to host C RL said certificate do not cancelled (calcellation).Host C RL is the calcellation certificate ID tabulation about the public key certificate of issuing main frame.Driver 330 obtains host C RL from the memory within driver or information recording carrier.

Whether driver 330 does not obtain ID from wherein having to remove the host public key certificate of altering, and confirm consistent with the ID that in host C RL, registers about said ID.Be present under the situation among the host C RL at identical ID, driver 330 definite its main frames are cancelled the main frame of (calcellation), and stop to carry out subsequent treatment.Be not recorded under the situation among the host C RL at the ID that from the host public key certificate, obtains, driver 330 confirms that its main frame is an authorized unrepealed main frame, and proceeds to handle.

And on the other hand, in step S124, main frame 350 is carried out the validity (altering checking) of confirming the driver public key certificate also according to the driver public key certificate that from driver 330, receives, and uses driver CRL to confirm whether cancelled about driver.Only confirming that the driver public key certificate is under the authorized and unrepealed situation, main frame 350 is proceeded to handle.Main frame 350 obtains driver CRL from the memory within main frame or information recording carrier.

Then, driver 330 and main frame 350 pass on their checking results separately as actuator response (S125) and response of host (S126).When passing on said checking as a result, both sides all produce the value of ECDH (elliptic curve Diffie Hellman), as will using the value of elliptic curve cryptography to it, and inform each other.

When main frame 350 received drivers checking results with ECDH value, driver 330 verify the response of main frame in step S127, confirm to set up the driver checking, and session key as Public key of ECDH value generation of use reception at driver 330.Similarly, when main frame 350 received host verification result and ECDH value from driver 330, main frame 350 was verified actuator response in step S128, confirmed to set up host verification, and produced the session key as Public key according to the ECDH value that receives.

Through this mutual authentication processing, driver 330 is shared a session key as Public key (Ks) with main frame 350.

Get back to Figure 18, with the description of proceeding to use the order of handling about content.In step S101; Carry out the mutual checking between main frame and the driver and sharing session key (Ks) afterwards; Main frame 350 obtains to be recorded in the MKB 311 in the information recording carrier 310 through the driver among the step S102; The Device keys 351 that use is kept in the memory is carried out the processing of MKB 311, and from MKB, obtains media key (Km).

As stated; MKB (media key block) 311 is encryption key block that generate according to a kind of tree encryption key distribution method that is called as broadcast encryption method; And be that the Device keys (Kd) that only is kept in the equipment of holding valid license through basis is handled (deciphering), can obtain the key information piece of the necessary media key of decryption content (Km).

Then, in step S103, will handle the deciphering that the media key (Km) that obtains is applied to carry out the title key document that from information recording carrier 310, reads, thereby obtain title key (Kt) through the MKB in step S102.Be kept at title key document in the information recording carrier 310 and be one and comprise document, and, can obtain to be used for the title key (Kt) of contents decryption through carrying out the processing of applicating medium key by the media key ciphered data.Decryption processing application examples such as a kind of AES AES of attention in step S103.

Then; Main frame 350 is via the content 313 of the encryption of driver 330 reading and saving in information recording carrier 310; The content that reads is kept in the trace buffer 352; Title key (Kt) to being kept among the content application step S104 in the said buffer is carried out decryption processing, and obtains the content of deciphering.

The content of deciphering is kept in the plain text TS buffer 353.(pure TS) refers to the plain text MPTS of deciphering.Now, the content that is kept at the deciphering in the plain text TS buffer 353 is to comprise the above-mentioned content that is modified data that can't reproduce as it is, and the data transaction that need be scheduled to (carrying out the data replacement through rewriting).

Represented this data conversion treatment in the piece 371 in Figure 18.Piece 371 among Figure 18 is equivalent to the processing of the data conversion treatment unit 154 of main frame shown in Figure 15 150.The overview of this data conversion treatment is described referring now to Figure 20.

Encrypted content 313 shown in Figure 180 is the encrypted contents that are kept in the information recording carrier, and this encrypted content is kept in the trace buffer 352 in the host computer side provisionally.Shown in Figure 20 (1) is the data 401 of trace buffer storage.

Carry out deciphering by the decryption processing of host computer side, and the decrypted result data are kept in the plain text TS buffer 353 as the encrypted content of the data 401 of trace buffer storage.Shown in Figure 20 (2) is decrypted result data 402.

Decrypted result data 402 comprise not being the interrupt data 403 of correct content configuration data.The data conversion treatment unit of main frame is carried out the translation data of using as the correct content configuration data that obtain in the correction chart 314 from be recorded in information recording carrier shown in Figure 180 310 404 and is substituted the said processing that is modified data 403.To rewrite (rewriting) a part of data, for example, carry out said alternate process about being written to the data of plain text TS buffer 353.

Further; The data conversion treatment that main frame is carried out is not merely handled use and is substituted as the translation data of normal content data and be modified data; And the processing of the part in the configuration data in the execution use identifier collection translation data 405 alternative decrypted result data 402, shown in figure 20.

As stated, identifier is the data that the configuration bit of the identifying information that content reproducing device or content playback use can be identified.In object lesson, said identifier is the configuration data as the identifying information (player ID) of the messaging device that is used to carry out the host application program player, or the distinguishing mark that generates according to player ID.As stated, identifier collection translation data is the bit value slight modification of wherein correct content-data and the data that do not influence the content playback level.

For example, a large amount of identifier collection translation data 405 are set within content, and many group identifiers of Collection and analysis collection translation data 405, to confirm player ID.Identifier collection translation data 405 is data (within the level of carrying out the normal reproduction content) that the configuration bit of wherein normal content data changes, and is wherein to start bit (distinguishing mark configuration bit) established data by the MPEG bit stream analysis.

Registration a large amount of translation data 404 and identifier collection translation data 405 shown in Figure 20 in the correction chart in being kept at information recording carrier, and further, registration is about the writing position information of these data.According to the information that correction chart is preserved, carry out data conversion treatment, use the translation data 406 shown in Figure 20 (3) to substitute and be kept at the data in the plain text TS buffer 353.

Get back to Figure 18, will carry out, promptly in the description of the data conversion treatment of host computer side about the processing within dashed boxes 371.For example, carry out data conversion treatment by the safe VM that is set to the virtual machine within the main frame 356.Virtual machine (VM) is a virtual machine, and it is directly understood and carries out intermediate language, and understands and carry out not according to the command code information in the intermediate language of any particular platform.

Safe VM 356 reads the data conversion treatment program 315 that comprises opcode information from information recording carrier 310, and carries out and handle.Safe VM 356 handles under the control of a button.onrelease 354; Also input carry out host application program the id information etc. of player (messaging device) as player information 355, and carry out the data conversion treatment program 315 that from information recording carrier 310, obtains.Button.onrelease 354 is carried out the monitoring of handling.Whether main frame carries out the simulation program inspection and is correctly carried out by the processing that safety VM 356 carries out; Monitor other host application program or as the processing and the state of the player (messaging device) of host application program actuating equipment; And, stop the data conversion treatment of being undertaken by safety VM 356 detecting under the situation of handling mistake, unwarranted processing etc.

Safe VM 356 uses the correction chart that from information recording carrier 310, reads, and execution is kept at the data converter in the plain text TS buffer 353.That is to say; In the data conversion treatment in step S105 shown in Figure 180; Safe VM 356 uses the translation data 404 as correct content configuration data to substitute and within decrypted result data 402 shown in Figure 20, is modified data 403; And further, carry out data rewriting and handle, wherein according to the bit of the player ID shown in the FM ID bit position among Fig. 8; Identifier collection translation data 405 is replaced with the part of content-data, thereby the storage data transaction in the plain text TS buffer 353 is become translation data 406.

Then, via the TS (MPTS) of outside output conversions such as network, and in an outside transcriber, reproduce.Perhaps in step S106,, carry out conversion, and further, in decoding processing (step S107) afterwards, reproduce via the screen loud speaker from MPTS (TS) to basic stream (ES) through the processing of demultiplexer.

Safe VM 356 uses the correction chart of before having described with reference to Fig. 5 to carry out data transaction, promptly as " the conversion rewrite data " of the solid data of following clauses and subclauses:

(a) be used to use one and be authorized to the translation data that content substitutes interrupt data, and

(b) according to player ID; And the correction chart that wherein writes down the information of the writing position of specifying these data; Be modified the identifier collection translation data that data are replaced by the identifier collection; And the content 20 of a reproduction of generation from comprise the content recorded of describing with reference to Fig. 1 that is modified data 11, thereby carry out reproduction processes.

In other words, according to being recorded in the correction chart 314 in the information recording carrier 310, the safe VM 356 of main frame 350 carries out in the stream of the assigned address of correction chart and writes

(a) translation data, and

(b) identifier collection translation data

Processing.Carrying out data writes as handling about the translation data that is kept at the data in the plain text TS buffer 253 or the rewriting of identifier collection translation data; And handle through this, the data that are kept among Figure 20 (3) that data in the plain text TS buffer 253 replace with previous description.

Execution is from the outside output content of the player (messaging device is PC for example) of placing main frame, or content playback, with as the processing according to the translation data shown in Figure 20 (3).

Translation data is correct content configuration data, and knowing symbol collection translation data with timestamp is the data of reproducing correct content with being applied to, therefore, can reproduce correct content according to the decoding reproduction of these data.For example, be replicated with unwarranted mode, and under the situation of a large amount of unwarranted reproducting content leakages, analyze identifier collection translation data and can obtain player ID, and can accurately locate the seepage source of unwarranted content-data in content.

(5.2) content playback is handled example 2

Then, will carry out handling the description of example 2 with reference to Figure 21 about content playback.Figure 21 representes an information recording carrier 310 of preserving encrypted content from left; One wherein is provided with information recording carrier 310 so that carry out the driver 330 that data read; And a main frame 350, it links to each other with said driver so that can carry out data communication and also carry out the reproduction application of wherein carrying out reproduction processes through the content that driver 330 obtains to be kept in the information recording carrier 310.For example for example carry out main frame 350 among the PC etc. at a messaging device.

In Figure 21, a MKB (media key block) and a title key document of being recorded in the information recording carrier 310 have been omitted.Main frame 350 keeps one and is applied to the Device keys that MKB handles, MKB (media key block) and the title key document of application records in information recording carrier 310, and carry out and calculate a title key (Kt) with reference to the identical processing of Figure 18 description.In Figure 21, even these processing also have been omitted.Information recording carrier is preserved an encrypted content 313, a correction chart 314 and a data conversion processor 315.

Handle at content playback shown in Figure 21 under the situation of example 2, the processing that it is characterized in that carrying out the piece 381 shown in the dotted border is as processing in real time, and the processing that before content playback or output, comes execution block 382 with batch processing.That is to say; In beginning to reproduce perhaps outwards before the output content etc.; Safe VM 356 reads the data conversion treatment program 315 that comprises command code information from information recording carrier 310; And, carry out the decryption processing of the correction chart 314 that from information recording carrier 310, reads etc. according to the control of button.onrelease 354 and the input of player information 355.

The correction chart 314 that is recorded in the information recording carrier 310 is submitted to the Fuzzy Processing of using AES encryption or calculated example such as XOR calculating etc.; And safe VM 356 data-driven conversion processors 315 are carried out decryption processing or predetermined computing, to obtain the correction chart as plain text data.In beginning to reproduce, perhaps outwards before the output content etc., carry out processing up to now with batch fashion.

Carry out subsequent treatment as handling in real time, itself and content playback or content are outwards exported processing and are carried out concurrently.That is to say that the contents decryption in step S201 is handled, the data conversion treatment in step S202, promptly is registered in the translation data in the correction chart 314 that is recorded in the information recording carrier 310, promptly wherein will

(a) translation data,

(b) identifier collection translation data

Write the data conversion treatment that is recorded in the assigned address in the correction chart 314; And further; The outside output processing of the TS of the conversion in step S203 (MPTS) or demultiplexing are handled; I.e. conversion process from MPTS (TS) to basic stream (ES), the decoding processing in step S204, and with content playback or outwards output carry out these concurrently and handle as handling in real time.

Adopt this processing sequence, even under the situation of processing correction chart 314 of being taken time by safety VM 356, can realize real-time processing, this does not influence content playback and outside output processing yet.

(5.3) content playback is handled example 3

Then, will carry out handling the description of example 3 with reference to Figure 22 about content playback.Figure 22 representes 310, one drivers 330 of information recording carrier and a main frame 350 of preserving encrypted content from left.A MKB (media key block), a title key document and the processing of using them were identical with the processing example of before having described with reference to Figure 18 1, and therefore the descriptions thereof are omitted at this.In current processing example, shown in figure 22, information recording carrier 310 is preserved an encrypted content 318 and a data conversion processor 315 that comprises correction chart.The processing of carrying out the piece 381 shown in the dotted border is as processing in real time, and the processing of the piece 383 shown in the execution dotted border is as processing intermittently.

That is to say that in current processing example, correction chart is recorded in the mode of disperseing during within the configuration data of encrypted content some divide into groups.For example, correction chart is kept within the transmission stream packets of the content that includes setting for example shown in Figure 23.Figure 23 A representes the configuration of content-data.This content configuration is represented the content-data formed of MPTS (TS) by deciphering.MPTS is made up of the TS (MPTS) of predetermined quantity byte.Correction chart is cut apart and is recorded in a plurality of groupings of a part of dividing into groups as these TS.For example, as shown in the figure, correction chart is recorded in TS and divides into groups in 391,392 etc.Be used for preserving the example that the TS of correction chart divides into groups and comprise that the TS that contains the PMT (mapping table able to programme) that is provided with the mode that is dispersed in content divides into groups.

Be recorded in and in the divided correction chart be, the same as the correction chart of for example before having described with reference to Fig. 5 to 8, be used for the content of deciphering is replaced the translation data (or identifier collection translation data) of processing and the record position of said translation data.Yet; Although Fig. 5 to 8 uses the packet numbering that begins from the original position of AV stream document to represent to be modified divide into groups 394 be modified 395 the packet positions that is modified of dividing into groups; Preferably use expression to be modified from first and divide into groups 394 to come record to the divide into groups position data of 395 relative packet positions of being modified of back, for example second shown in the arrow divides into groups among Figure 22 is modified packet positions.This situation is provided at the advantage that can make a mistake hardly in the actual editing and processing, and carries out easily and load, even the restriction of " be modified 394 the source packet numbering of dividing into groups＞be modified divide into groups 395 source packet numbering " for example is not provided.

Be recorded in translation data in each correction chart and have and be arranged near the record position of the TS that comprises each correction chart dividing into groups, for example shown in the image pattern 23B.For example, in the example shown in Figure 23 B, there is the

grouping

394 and 395 of translation data posting field to be set near the grouping 391 that comprises correction chart.So be provided with and the data replacement handled under real time decrypting and the situation of reproducing content, to use translation data, and the detection that the TS of record correction chart divides into groups allows to be used for obtaining translation data and to be recorded in the processing quilt execution effectively that writes (rewriting) translation data on the position of table with analyzing and processing as the continuous processing after the deciphering.

Handle at content playback shown in Figure 22 under the situation of example 3; The processing of carrying out the piece 381 shown in the dotted border is as handling in real time; And before content playback or output are handled or during, the processing of execution block 383 is handled as the intermittent low frequency of intermittently carrying out.

Safe VM 356 reads the data conversion treatment program 315 that comprises command code information from information recording carrier 310; And intermittently generate and export secret parameter (P1, P2, P3 etc.); It is before content playback or output are handled or during; According to the control of button.onrelease 354 and the input of player information 355, to convert the plain text correction chart to necessary with being recorded in correction chart and content in the information recording carrier 310.Intermittently carry out said processing.

Parameter (P1, P2, P3 etc.) is to be applied to corresponding predetermined content data cell and divided correction chart, for example is recorded in the calculating or the encryption parameter of divided

correction chart

1,2,3 in the content etc. with the mode of disperseing.Each divided

correction chart

1,2,3 etc. is submitted to the calculating or the encryption of all using different parameters (P1, P2, P3 etc.), and it is recorded in the information recording carrier.

For example, an object lesson is XOR (XOR) calculating parameter that is applied to cut apart

correction chart

1,2,3 etc.Data-driven conversion processor 315, safe VM 356 carries out and intermittently generates and export the processing that correction chart 314 is converted to the necessary parameter of plain text correction chart (P1, P2, P3 etc.).

In real-time processing block 381; In step S301; Carry out a deciphering that comprises the encrypted content 318 of correction chart; Each correction chart by the signal demultiplexing among the step S302 handle separate table reduction and data conversion treatment under the control of real-time event handling procedure 361 among the execution in step S303.Under the control of real-time event handling procedure 361; Through using the intermittently deciphering or the calculating of the parameter (P1, P2, P3 etc.) of output execution correction chart from safety VM 356; Obtain a plain text correction chart, and carry out the translation data in the part correction chart that will be registered in acquisition, promptly

(a) translation data, and

(b) identifier collection translation data

Be written to the data conversion treatment in the assigned address that is recorded in the correction chart, as handling with content playback or the outwards parallel real-time processing of output processing.

For example, parameter (P1, P2, P3 etc.) be about situation corresponding to XOR (XOR) calculating parameter of the translation data of predetermined content partial data unit under, reduction is handled for the table among the step S303, carries out

[correction chart 1] be [P1] (XOR),

[correction chart 2] be [P2] (XOR),

[correction chart 3] be [P3] (XOR), etc.

These XOR computings are to obtain each plain text correction chart data.Attention in above-mentioned expression formula, suppose [A] (XOR) [B] XOR of referring between A and B calculate.

Like this; The correction chart that is included in the content 318 that is recorded in the information recording carrier is divided into the correction chart that wherein writes down corresponding to the translation data of each content part and translation data positional information; And these are submitted to operation parameter (P1, P2, P3 etc.) calculate as the XOR of unique secret parameter respectively, and with its preservation.Safe VM 356 obtains and exports said parameter continuously.

Table reduction in step S303 is identical with reference to the processing of description such as Figure 18 with before with the processing after the data conversion treatment, and carries out this processing conduct and outwards export the real-time processing of handling executed in parallel with content playback and content.That is to say the demultiplexed signals processing among the execution in step S304, these processing conducts of decoding processing among the step S305 and content playback and the outwards parallel real-time processing of output.

In current processing example; Carry out a kind of scheme, wherein the configuration data corresponding to the correction chart of complete content is divided, and different parameters is relevant with each divided correction chart; And intermittently export these parameters through safe VM 356; Even therefore for example leaked a part of parameter, also impossible reduction complete content, thus realize safer content use and management.And, even in current processing example, as other processing example of again, can realize content playback is handled the real-time processing that does not have influence with outwards exporting.And; For example under the situation that detects unwarranted processing during the content playback; Unwarranted processing and detecting information according to button.onrelease 354; The processing of cancelling safe VM 356 can be cancelled the generation of translation data, and unwarranted content playback and outwards output ability are stopped midway.

Then, will carry out about comprising corresponding to the generation of the content that is modified data of special reproduction and the description of reproduction processes.As can from above-mentioned description, being expressly understood that reproduction of content need carry out it is used the data transaction of correction chart about the processing example shown in " 5, content playback handle ".In normal content playback is handled; Can carry out data conversion treatment and need not to become too slow for content playback speed; But under the situation of carrying out the special reproduction processes high-speed retrieval of F.F. or rewinding (for example as), the situation that data conversion treatment can't be caught up with the high-speed retrieval speed of content takes place sometimes.

Especially; As handling described in routine 3 at above-mentioned (5.3) content playback; Processing in the calculating that is used to carry out the correction chart application different parameters of wherein each being cut apart and writing down is under the necessary information, and further, the processing time becomes concerning the data conversion and is necessary; Therefore, the situation that can catch up with high speed takes place sometimes.Hereinafter, in this content special reproduction, will carry out handling mistake along with the generation of the content of data transaction generation and the description of reproduction processes about wherein stoping.

As stated, be modified data and for example be modified data etc., can realize more effective data corruption through the I image of each GOP is submitted to.If all I images that are included among all GOP that form a MPEG content all are set to be modified data; When carrying out special reproduction for example during high-speed retrieval; Need carry out the data replacement to the translation data that each GOP execution calculating parameter, acquisition correction chart and use are registered in the correction chart; Therefore, processing is too slow concerning reproducing speed sometimes.

Usually, for example wherein to use the view data of the high-speed retrieval of MPEG content only be the I image with being applied to special reproduction.In other words, special reproduction for example high-speed retrieval through each predetermined space only being selected and being reproduced the I image and carry out.

Adopt a kind of scheme; I image comprising in all GOP that form a MPEG content is not set to be modified data; Promptly be included in the I image among the GOP that is applied to special reproduction (for example high-speed retrieval) is not set to be modified data, allow reproducer to carry out for example high-speed retrieval and need not to carry out calculating parameter, obtain the translation data that correction chart and use be registered in the correction chart and carry out the data replacement of special reproduction.

Now will be with reference to Figure 24, carry out the description of adopting a kind of content configuration example of scheme about one, wherein be included in be applied to special reproduction for example the I image among the GOP of high-speed retrieval be not set to be modified data.Figure 24 A representes a content (MPEG content) that is kept in the information recording carrier.This content is recorded in the increase of the GOP that is made up of I, P and B image.

GOP 410 shown in Figure 24 A be one wherein the I image be set to be modified the GOP of data.Shown in Figure 24 B, comprise the I image 411 and P image 412 that are set to be modified data.And on the other hand, the GOP 420 shown in Figure 24 A be one wherein the I image be not set to be modified the GOP of data.Shown in Figure 24 B, comprise the I image 421 and the P image 422 that is set to be modified data that are not set to be modified data.

Generate one wherein record be not set to be modified the table (special reproduction management information table) or the EP mapping of position at first of the I image of data, and it is recorded in the information recording carrier.The object lesson of special reproduction management information table or EP mapping will be described after a while.

For example the reproducer of high-speed retrieval reads the special reproduction management information table or EP shines upon to be used to carry out special reproduction; Obtain not to be set to be modified the positional information at first of the I image of data; Only select by this non-I image that data are formed that is modified; And it is submitted to high-speed retrieval, thereby carry out for example high-speed retrieval and need not to carry out calculating parameter, obtain the translation data that correction chart and use be registered in the correction chart and carry out the data replacement of special reproduction.

Further, with reference to Figure 25, will carry out about one make special reproduction for example high-speed retrieval can be performed and need not to use and be modified the description that data are carried out the content configuration example of data replacements.In the example of describing with reference to Figure 24, only will not be set to be modified data at the I image within the GOP of some GOP that special reproduction is for example used in the high-speed retrieval.Yet,, for example in the high-speed retrieval, not only use the I image sometimes but also use P and B image to reproduce in special reproduction according to the specification of reproducer.

In Figure 25,, not only will all be set to the non-data that are modified at I image within the GOP that special reproduction is for example used in the high-speed retrieval but also all I, P and the B image that is included among certain GOP in order to be applicable to this reproduction processes.In other words, handle in the increase of GOP, to be determined and be modified the GOP that data are formed only to be provided with by non-.

Figure 25 A representes a content (MPEG content) that is kept in the information recording carrier.This content is recorded in the increase of the GOP that is made up of I, P and B image.GOP 430 shown in Figure 25 A comprises the I image 431 and P image 432 that is set to be modified data, shown in Figure 25 B.And on the other hand, the GOP 440 shown in Figure 25 A comprises by non-and is modified the I image 441 that data are formed that shown in Figure 25 B, and the I, P and the B image that are included among the GOP all are set to the non-data that are modified.

Generate a table (special reproduction management information table) or an EP mapping of wherein writing down the position at first of this I image that does not comprise the GOP that is modified data, and it is recorded in the information recording carrier.For example the reproducer of high-speed retrieval reads the special reproduction management information table or EP shines upon to be used to carry out special reproduction; Obtain not to be set to be modified the positional information at first of the I image of data; Only select by this non-I image that data are formed that is modified; And it is submitted to high-speed retrieval, thereby carry out for example high-speed retrieval and need not to carry out calculating parameter, obtain the translation data that correction chart and use be registered in the correction chart and carry out the data replacement of special reproduction.

And shown in figure 26, all the I images within all GOP all can be set to the non-data that are modified.GOP 450 shown in Figure 26 A comprises and is set to non-I image that is modified data 451 and the P image 452 that is set to be modified data, shown in Figure 26 B.And the GOP 460 shown in Figure 26 A comprises by non-data I image of forming 461 and the P image 462 that is set to be modified data of being modified, shown in Figure 26 B.Like this, the I image that is included among all GOP all is set to the non-data that are modified.

Carry out this set and allow reproducer to select at least the I image separately and carry out for example high-speed retrieval of special reproduction, to carry out for example high-speed retrieval and need not to carry out calculating parameter, obtain the translation data that correction chart and use be registered in the correction chart and carry out the data replacement of special reproduction.In this case, need not to obtain not to be set to be modified the positional information at first of the I image of data, therefore need not to read special reproduction management information table or EP mapping to obtain the positional information of certain I image.Yet; Angle from picture breakdown; Therefore with the I image setting is that non-being modified is undesirable, for example comprising that the identifier collection is modified data and identifier collection translation data and does not comprise under the situation of interrupt data, is that non-being modified is effective especially with all I image setting.

In the configuration of describing with reference to Figure 24 and 25, wherein record table (special reproduction management information table) or the EP mapping of position that be not set to be modified the I image of data becomes and is necessary.To carry out description with reference to Figure 27 now about the configuration of these tables and EP mapping.

Figure 27 representes wherein to write down two examples of special reproduction admin table of the position of the I image that is not set to be modified data.Figure 27 A is a record wherein

^*The quantity that does not have the I image of data modification [MT: medium conversion], and

^*The packet numbering that does not have the image of I at first of data modification (MT)

The table of information.Notice that SPN is the source packet numbering, and be the information of a packet numbering of expression.

Reproducer obtains said special reproduction management information table from information recording carrier; And acquisition does not comprise the position of the I image of data modification; Thereby, carry out for example high-speed retrieval and need not translation data of special reproduction through the reproduction processes of carrying out only forming by those I images.

Figure 27 B is a record wherein

^*The quantity that does not have the I image of data modification [MT: medium conversion],

^*The packet numbering that does not have the image of I at first of data modification (MT), and

^*The PTS that does not have the I image of data modification (MT)

The table of information.Notice that PTS is the timestamp (time of occurrence stamp) of expression corresponding to the recovery time information of a source grouping.

Reproducer obtains said special reproduction management information table from information recording carrier; And acquisition does not comprise the position of the I image of data modification; Thereby, carry out for example high-speed retrieval and need not translation data of special reproduction through the reproduction processes of carrying out only forming by those I images.In the table shown in Figure 27 B; Can from this table, obtain the timestamp of expression corresponding to the recovery time information of the I image packets that does not have data modification (MT); Thereby help according to special reproduction speed, never only select certain I image in the I image of data modification (MT) and reproduce.

Special reproduction management information table shown in Figure 28 is represented the example of a table, wherein record

^*The information of the EP mapping indication information of grouping at first corresponding to the I image that does not have data modification (MT).

Be used for carrying out special reproduction for example the reproducer of high-speed retrieval from special reproduction management information table shown in Figure 28; Acquisition is corresponding to the EP mapping indication information (EP shines upon ID) that divides into groups at first of the I image that does not have data modification (MT); Then obtain an EP mapping, and from the EP mapping, obtain not have the position of the I image of data modification (MT) according to the EP mapping indication information.

To carry out description with reference to Figure 29 and 30 now about an EP mapping.Shown in figure 29, EP mapping (EP_map) the 501st is included in the data in the clip information document (clip information).To carry out about shine upon the description that detects the I picture position according to EP with reference to Figure 30 now.Figure 30 A representes a segment AV stream, and wherein each rectangle is represented the source grouping of one 192 bit.Each source grouping of wherein having stipulated the reproduction processes time is provided with a timestamp.

Figure 30 B representes the divide into groups detailed configuration of (X1) number of source.A TP_extra title and a transmission grouping are divided into groups to comprise in a source, and this transmission divides into groups to comprise that various types of heading messages and I-PICH data etc. are as the MPEG2 solid data.

As stated, the clip information shown in Figure 30 C comprises an EP mapping.EP mapping as shown in the figure comprises each data among [PTS_EP start], [SPN_EP start] and [I_end_position_offset].The meaning of each data is as follows:

PTS_EP_start: corresponding to a source grouped time stamps (time of occurrence stamp) that comprises the order title

SPN_EP_start: the address at first that comprises the source grouping of order title

I_end_position_offset: comprising that divide into groups and comprise the skew between the terminal source grouping of I image in the source of title in proper order

Figure 30 D representes these data relationships.

That is to say; Shown in Figure 30 B; The configuration of the data in dividing into groups in the regulation source that is included in; Obtain [PTS_EP start], each data in [SPN_EP start] and [I_end_position_offset] shown in Figure 30 C,, the I picture position within dividing into groups in the source can be obtained according to these data.

Be used for carrying out special reproduction for example the reproducer of high-speed retrieval from special reproduction management information table shown in Figure 28; Acquisition is corresponding to the EP mapping indication information (EP shines upon ID) that divides into groups at first of the I image that does not have data modification (MT); Then obtain an EP mapping according to the EP mapping indication information; And the position that does not have the I image of data modification (MT) according to EP mapping acquisition; Carry out reproducing, thereby high-speed retrieval that special reproduction for example only is made up of the I image that does not have data modification and the special reproduction that does not have data transaction can be performed.

Further; Figure 31 representes an EP mapping configuration; It is used for revising through EP mapping itself is used; And only mapping need not to use the special reproduction management information table of describing with reference to Figure 27 and 28 according to EP, starts the high-speed retrieval that special reproduction for example only is made up of the I image that does not have data modification.In EP mapping shown in Figure 31, write down following data:

^*The quantity of EP mapping,

^*The packet numbering at first of I image (SPN: the source packet numbering),

^*The PTS of I image (time of occurrence stamp), and

^*There is the mark of data modification (MT) in expression.

In these data,

^*The quantity of EP mapping,

^*The packet numbering at first of I image (SPN: the source packet numbering), and

^*The PTS of I image (time of occurrence stamp)

Be the data that have been included in up to now in the EP mapping, thereby be characterised in that

^*There is the mark of data modification (MT) in expression

Be provided with extraly.

^*There is the mark of data modification (MT) in expression

Be that to be used for making the I image setting that can confirm about whether to be included in to the major general GOP of EP mapping appointment be the mark that is modified data.For example, the value representation of said mark

Mark value (0)=do not revise, and

Mark value (1)=have modification.

Be used to carry out special reproduction for example the reproducer of high-speed retrieval according to the mark of EP mapping shown in Figure 31; Confirm whether about the I image among the GOP that is included in EP mapping appointment be to be modified data; Select wherein to be provided with the non-GOP that is modified the mark of data of expression; And there is not the position of the I image of data modification (MT) to reproduce to carry out according to EP mapping acquisition; Thereby start the high-speed retrieval that special reproduction for example only is made up of the I image and need not data modification, and special reproduction can be performed and need not data transaction.

Like this; The EP mapping that the special reproduction admin table that application is described with reference to Figure 27 and 28 is perhaps described with reference to Figure 31; Allow messaging device carry out the content special reproduction for example high-speed retrieval for example be modified easily to select and to obtain view data as non-; Promptly be not set to be modified the I image of data, carrying out the high-speed retrieval that special reproduction for example only is made up of the image that does not have data modification, and carry out special reproduction and need not data transaction.

The EP mapping that the special reproduction admin table that attention is described with reference to Figure 27 and 28 is perhaps described with reference to Figure 31 is recorded in the information recording carrier with content.Figure 32 representes a kind of configuration of devices that is used for the manufacturing information recording medium.Equipment disposition shown in Figure 32 is such configuration: wherein increase a playback management information generation unit 521 that is used to carry out the processing that generates table that a positional information that makes the non-I of being modified image can be obtained or EP mapping to the equipment of describing with reference to Fig. 3, and other configuration is with almost identical with reference to the configuration of Fig. 3 description.

Playback management information generation unit 521 generates special reproduction admin table of describing with reference to Figure 27 and 28 or the EP mapping of describing with reference to Figure 31.Data record cell 39 is carried out the said table that is used for being obtained in the positional information that makes the non-I of being modified image that an information recording carrier record is generated by playback management information generation unit 521 or the processing of EP mapping.

Note according to every kind of processing mode with reference to Figure 24 to 26 description; Be modified Data Position and confirm that unit 33 for example uses; Be used for only selecting some I treatment of picture; Be used for not selecting as the I treatment of picture that is modified data etc., confirm that a position that is modified data is provided with the position as being modified data.

According to the information that is provided with in shining upon at the special reproduction admin table of describing with reference to Figure 27 and 28 or with reference to the EP that Figure 31 describes; Be modified in a plurality of I images of data generating unit 37 from be included in the mpeg encoded data and select respectively as being modified the I image of data and, and only will be chosen as the I image that is modified data and submit to data modification and handle and be modified data with generation as the non-I image that is modified data.

In a plurality of I images in being included in the mpeg encoded data, be modified data generating unit 37 each predetermined period (N) is provided with the I image that is modified data as non-, be used to generate the processing that is modified data with execution.Attention is used for each predetermined period is provided with the non-configuration example that is modified image about one, will in [7, comprise generation and reproduction processes example 2 corresponding to the content that is modified data of special reproduction] described after a while, be described in detail.

Then, the description of reproduction order will be carried out about under the situation of carrying out the content playback processing at messaging device with reference to Figure 33 to 35.Especially, with describing this content playback of three types order:

Figure 33: the normal reproduction that is accompanied by data transaction is handled,

Figure 34: be accompanied by special (at a high speed) reproduction processes of data transaction, and

Figure 35:, be not accompanied by special (at a high speed) reproduction processes of data transaction through using above-mentioned special reproduction management information table or EP mapping.

At first, will carry out description with reference to Figure 33 about the normal content reproduction order that is accompanied by data transaction.Handling process among Figure 33 is handled corresponding to the content playback of before describing with reference to Figure 22; Processing in the piece 381 shown in the dotted border of execution in Figure 22; Promptly be used for the processing of the content playback processing unit of the main frame that executive real-time handles; As the processing among the step S401 to S407 in the flow process shown in Figure 33, and the processing that is used for carrying out the safe VM 356 of the processing in the piece 383 shown in the dotted border of Figure 22 is equivalent to the processing among the step S410 of flow process shown in Figure 33.

At first, in step S401, the messaging device that is used for carrying out content playback select one will be by the content of from the content that is recorded in information recording carrier, reproducing, and read clip information document corresponding to the selected content that will be reproduced.Describe with reference to Figure 29 as previous; EP mapping of clip information document storing; And the I picture position within record divides into groups as the source of an AV stream of composition of the content that will be reproduced in this EP mapping, and as [SPN] and [PTS] of recovery time information.

In step S402; I picture position within the messaging device that is used for carrying out content playback obtains to divide into groups as the source of an AV stream of composition of the content that will be reproduced from the EP mapping that is included in the clip information document, and as [SPN] and [PTS] of recovery time information.Then, in step S403, messaging device sends a calculation of parameter request to safety VM, and said parameter is its use translation data of having used correction chart to be carried out the data replacement handle necessary.Notice that current processing example is a processing example of handling example corresponding to the content playback of describing with reference to Figure 22; In the replacement content of it having been used correction chart; Carry out the reduction of correction chart through using the parameter as secret parameter (P1, P2, P3 etc.) that provides from safety VM 356 shown in figure 22 continuously, and from the correction chart of reduction, obtain translation data and identifier collection translation data.

Processing among the step S403 is to be used to ask safe VM to carry out the processing of said calculation of parameter, and safe VM comes calculating parameter according to request in step S410, and it is offered the reproduction processes unit of the main frame that is used to carry out content playback continuously.About the said calculation of parameter in safety VM with processing is provided, concerning the reproduction processes unit, be necessary within the sufficiently long time concerning the content recovery time (promptly can carry out data replacement time), to receive parameter.In other words, in flow process shown in Figure 33, the parameter that provides from safety VM need receive before the time period of time of implementation of the data conversion treatment the step S406.

In step S403 after safety VM sends calculation of parameter order; The content playback processing unit of main frame (for example reads the content that will be reproduced from information recording carrier in step S404; The AV flow data), carry out the decryption processing of the content that reads and in step S405.This decryption processing is the decryption processing of before describing with reference to Figure 18 to 22.

After said decryption processing, in step S406, the content playback processing unit is submitted to data conversion treatment with the content of deciphering.In this data conversion treatment; Describe with reference to Figure 22 as previous; The content playback processing unit (is for example in turn used reduction that the parameter (P1, P2, P3 etc.) that provides from safety VM 356 carries out correction chart; Carrying out XOR through application parameter calculates), from the correction chart that is reduced, obtain translation data and identifier collection translation data, and carry out the content replacement and handle.

Then, in step S407, the content playback processing unit is carried out decoding processing and content output.This decoding processing is that for example, mpeg decode is handled.The content playback processing unit is repeatedly carried out these processing (step S401 to S407) and is finished (end of title) or user up to the reproduction of content configuration data and import and suspend content playback (being among the step S411).In step S411, title finishes or the user imports under the situation of suspending content playback detecting, and said processing finishes.Above-mentioned is the normal content reproduction order that is accompanied by data transaction.

Then, will carry out description with reference to Figure 34 about the execution sequence of special (at a high speed) reproduction processes of being accompanied by data transaction.Handling process among Figure 34 is also handled corresponding to the content playback of before describing with reference to Figure 22; Carry out the processing in the piece 381 shown in the dotted border among Figure 22; Promptly be used for the processing of the content playback processing unit of the main frame that executive real-time handles; As the processing among the step S501 to S507 in the flow process shown in Figure 34, and the processing that is used for carrying out the safe VM 356 of the processing in the piece 383 shown in Figure 22 dotted border is equivalent to the processing among the step S510 of flow process shown in Figure 34.

At first; In step S501; The messaging device that is used for carrying out content playback select one will be by the content of from the content that is recorded in information recording carrier, reproducing; Read EP mapping corresponding to the selected content that will be reproduced, and in step S502, the I picture position within acquisition is divided into groups as the source of an AV stream of composition of the content that will be reproduced from the EP mapping; And as [SPN] and [PTS] of recovery time information, and select to be applied to the image that special (at a high speed) reproduces.

Then, in step S503, messaging device sends a calculation of parameter request to safety VM, said parameter be to its used correction chart will be necessary about what will be applied to high-speed retrieval by the data conversion treatment of reproduced image.Safe VM is according to the request calculating parameter among the step S510, and it is offered the reproduction processes unit of the main frame that is used to carry out content playback successively.About the said calculation of parameter in safety VM with processing is provided; For the reproduction processes unit, be necessary within the sufficiently long time concerning the content recovery time (in this example; Within the sufficiently long time the recovery time of the high-speed retrieval that log-on data is replaced) receive parameter, and this need handle in than the shorter time of the previous processing of describing with reference to Figure 33.In other words, in flow process shown in Figure 34, the parameter that provides from safety VM need receive before the time of implementation of the data conversion treatment step S506 section, and according to high-speed retrieval speed, this has reduced should the allowed time.

In step S503 after safety VM sends calculation of parameter order; In step S504; The content playback processing unit of main frame reads the enciphered data corresponding to the selected image (image of in step S503, selecting) of forming the content (for example AV flow data) that will be reproduced from information recording carrier; And in step S505, carry out the decryption processing of the data that read.This decryption processing is the decryption processing of before describing with reference to Figure 18 to 22.

After said decryption processing, in step S506, the content playback processing unit is submitted to data conversion treatment with the content of deciphering.In this data conversion treatment; Describe with reference to Figure 22 as previous; The content playback processing unit (is for example in turn used reduction that the parameter (P1, P2, P3 etc.) that provides from safety VM carries out correction chart; Carrying out XOR through application parameter calculates), from the correction chart that is reduced, obtain translation data and identifier collection translation data, and carry out the content replacement and handle.

Then, in step S507, the content playback processing unit is carried out decoding processing and content output.This decoding processing is that for example, mpeg decode is handled.The content playback processing unit is repeatedly carried out these processing (step S501 to S507) and is finished (end of title) or user up to the reproduction of content configuration data and import and suspend content playback (being among the step S511).In step S511, title finishes or the user imports under the situation of suspending content playback detecting, and said processing finishes.Above-mentioned is special (at a high speed) reproduction order that is accompanied by the content of data transaction.

Like this; Be accompanied by in execution under the situation that special (at a high speed) of the content of data transaction reproduce; Calculating parameter, reduction have been used the correction chart of said parameter to it and have been registered in the replacement that is reduced the translation data in the correction chart and handled, and need to carry out these processing so that it was in the recovery time, and if reproduce speed and increase; These processing can't be caught up with the recovery time, therefore the situation that content playback pauses possibly take place.

In order to prevent this situation,, take a kind of scheme as previous described with reference to Figure 24 to 31; Wherein some I image etc. is set to the normal content that need not change; Be the non-data that are modified, in special reproduction management information table or EP mapping, register about these non-information that is modified image, and when carrying out reproduction processes; Through using special reproduction management information table or EP mapping, carry out special (at a high speed) reproduction processes that is not accompanied by data transaction.

To carry out carrying out the description of the order of special (at a high speed) reproduction processes that is not accompanied by data transaction with reference to Figure 35 now about through using special reproduction management information table or EP mapping.Handling process among Figure 35 is also handled corresponding to the content playback of before describing with reference to Figure 22; Carry out the processing in the piece 381 shown in the dotted border among Figure 22; Promptly be used for the processing of the content playback processing unit of the main frame that executive real-time handles, as the processing among the step S601 to S605 of flow process shown in Figure 35.This processing example is special (at a high speed) reproduction processes that is not accompanied by data transaction, and the calculation of parameter of therefore being undertaken by safety VM 356 becomes and there is no need.

At first, in step S601, the messaging device that is used for carrying out content playback is selected the content that will be reproduced from the content that is recorded in information recording carrier, and reads the clip information document corresponding to the selected content that will be reproduced.Then; In step S602, according to the mapping of the EP within the clip information document, or the special reproduction management information table of before having described with reference to Figure 27 and 28; Messaging device obtains the information about the I image that does not have data modification; The position that does not promptly have the I image of data modification, and as [SPN] and [PTS] of recovery time information, and only select the image to be applied to the image that special (at a high speed) reproduces from non-being modified.

In step S603; Messaging device reads from information recording carrier corresponding to (for example forming the content that will be reproduced; The enciphered data of the selected image AV flow data) (selected image in step S602), and the decryption processing of the data that execution is read in step S604.This decryption processing is the decryption processing of before describing with reference to Figure 18 to 22.

Then, after this decryption processing, messaging device is carried out decoding processing and content output in step S605.Said decoding processing is that for example mpeg decode is handled.Messaging device is repeatedly carried out these processing (step S601 to S605) and is finished (end of title) or user up to the reproduction of content configuration data and import and suspend content playback (being among the step S611).In step S611, title finishes or the user imports under the situation of suspending content playback detecting, and said processing finishes.Above-mentioned is special (at a high speed) reproduction order that is not accompanied by the content of data transaction.

Like this; Need be through not using special reproduction management information table or EP mapping; Carry out the processing that calculating parameter, reduction have been used the correction chart of said parameter to it and be registered in the translation data replacement processing that is reduced in the correction chart; Carrying out special (at a high speed) reproduction processes be not accompanied by data transaction, even and reproduce speed and increase, also can realize not have the content playback of pause.

Then; As the generation and the reproduction processes example 2 that comprise corresponding to the content that is modified data of special reproduction; To carry out description about a configuration example; The image setting that certain interval of predesignating (N) wherein will be arranged is the non-data that are modified, and this is selected the non-image energy that is modified effectively, thereby carries out special (at a high speed) reproduction processes that is not accompanied by data transaction.That is to say; As previous described with reference to Fig. 6 to 8, make that to revise table block fuzzy so that be difficult for being deciphered, and in high-speed retrieval for example among the 2x; Even equipment has the CPU of relatively low ability; Also can realize the deciphering that it is fuzzy, but in unusual high-speed retrieval for example in the 100x etc., its fuzzy deciphering is too slow sometimes for reproducing speed.For this reason, as mentioned below, this processing example enables not to be accompanied by special (at a high speed) reproduction processes of data transaction and need not to use above-mentioned special reproduction management information table.

Configuration is used to carry out the messaging device of content playback; So that when the playback program of main frame is carried out initialization process in increasing corresponding to the title of medium (information recording carrier) or content, the interval information that obtains to be set to the non-I image that is modified data is as cycle information (N).As alternatively, can carry out a kind of scheme, wherein in the database document (for example, the clip information document) of an information recording carrier, write down the value of cycle information (N), and can before reproducing, obtain N.The reproduction processes unit that employing this set allows to be used to carry out content playback is according to cycle information (N); Acquisition is set to the non-interval that is modified the I image of data; And through selecting to carry out reproduction processes corresponding to the I image of this interval (N), this makes special (at a high speed) that do not need data transaction reproduce and can be performed.

Attention must be confirmed a rule so that do not stand the I image of data transaction from accurate in advance location the value that is set to the interval (N) between the non-I image that is modified data when realizing this processings example.For example, be provided with one such as following rule.

The I image at first of content is the non-data that are modified.

With the N piece is the cycle, is the non-data that are modified with the I image setting.

Be recorded in the EP mapping indicating wherein the I image of GOP to be set to the non-information that is modified the I image of data.

Suppose that according to a pre-defined rule, the I image of part GOP is set to the non-data that are modified, and will use an EP_MAP who wherein indicates the non-information that is modified data not write down to carry out special reproduction.

Attention can be carried out a kind of scheme; Wherein the different value setting of each content is set to the non-interval (N) that is modified the I image of data; Perhaps can carry out a kind of scheme, wherein come equally to confirm (N) at interval with a standard common concerning all the elements.For example,

N＝10

Like this; If confirmed interval to the identical non-I of the being modified image of all the elements; In the special reproduction of all the elements in being kept at information recording carrier, reproducer can carry out selecting to handle the special reproduction that does not need data transaction through using interval N=10 to carry out the I image.

Reproducer that content playback handles is known is set to the non-interval (N) that is modified the I image of data if be used to carry out; Reproducer can obtain the position (SPN) and the timestamp (PTS) of the non-I of being modified image easily according to the EP mapping, and the special reproduction that can only collect these I images.Attention can be not only with 10 serve as at interval and also with 20,30 select up to various intervals such as 100 will be in special reproduction selecteed I image, thereby handle various reproduction speed.

To carry out being provided with the description of an example and a reproduction processes example with reference to Figure 36 and follow-up accompanying drawing now about a special content.Figure 36 A representes that a quilt submits to the content of mpeg encoded, and is a content recorded that is recorded in the information recording carrier.A piece is corresponding to a GOP.

As stated, each GOP comprises I image, B image and P image, and through for example wherein each predetermined space is selected the reproduction of I image from GOP, can carry out for example high-speed retrieval of special reproduction.In the example shown in Figure 36 A, be included in the I image among the

GOP

0,5,10 etc. or all images that is included among these each GOP is set to the non-data that are modified.About the example shown in Figure 36 A, be set to the non-interval (n) that is modified the I image of data, promptly cycle information N is

N＝5。

In the EP mapping, as stated, with regard to regard to the information that is included in the I image among each GOP, record

^*The PTS of I image (time of occurrence stamp)

These information; And the messaging device that is used to carry out the content special reproduction is according to cycle (N); Obtain the I image information of registration in the EP mapping with predetermined interval; And through selecting the I image to carry out reproduction, thereby only select to be set to the non-I image that is modified data, and start and reproduce and need not to carry out data transaction.

Figure 36 B representes the register information of EP mapping.Figure 36 B is illustrated in the correlation between table numbering (I), I image packet numbering (SPN) at first and the PTS of I image (time of occurrence stamp) within the EP mapping.These information are stored in the EP mapping.About this example, the table numbering (I) within the EP mapping is consistent with the GOP numbering.Example of wherein in the EP mapping, preserving the I image information of all GOP of this example expression.The I image information of noting all GOP is not always to be kept in the EP mapping.To this example be described with reference to Figure 37 after a while.

In the example shown in Figure 36 B, the I image information of all GOP all is stored in the EP mapping, and the table numbering [I] within the EP mapping is consistent with the GOP numbering, and this is equivalent to the GOP numbering within content shown in (a).In each GOP, preserve an I image, so the GOP numbering is equivalent among the said content sequence number that I image at first begins.

That is to say that the table numbering I 0,5 and 10 right and wrongs of registration in the EP mapping are modified the image-related information of I, and especially, record

^*The PTS of I image (time of occurrence stamp)

These information; And be used to carry out the interval of the messaging device of content special reproduction with cycle (N=5); The I image information of acquisition registration in the EP mapping; Promptly to per five clauses and subclauses (5 GOP) selection information of EP mapping table, thereby the non-I of being modified image energy is selected and reproduces, and special reproduction (for example only being set to the non-high-speed retrieval that is modified the I image of data) can be carried out.

That is to say that the EP mapping of preparing if be used for special reproduction etc. is wherein reproduced the medium with the non-I of the being modified image of period record from one, can realize special reproduction and need not in the EP mapping, mark etc. to be provided.And, if for example the demonstration of a GOP was set to 0.5 second at interval, per five GOP is reproduced to make each 2.5 seconds I picture image can be shown successively, thereby realize high-speed retrieval.And; Not only obtain under the situation of all non-high-speed retrieval that are modified the I image at the wherein reproducer of this example; And under the situation that the non-I of being modified image existed with cycle of N=5; If suppose to select and show the image that will be reproduced, the display image of per 10 GOP made each 10 seconds image energy is shown, thereby carry out high-speed retrieval at interval according to the demonstration of an image further with the cycle of N=10.

Then, will carry out with reference to Figure 37 ought be less than preservation in the EP mapping corresponding to the description of the example under the situation of the I image information of all GOP about one.As stated, the I image information of all GOP always is not kept in the EP mapping.For example, Figure 37 representes a register information example of this EP mapping.

Figure 37 A is the sketch map that is illustrated in the correlation between the table numbering of GOP and registration in the EP mapping in the recorded content of information recording carrier.In the EP mapping, register GOP 0 at first, and its register information is kept in the table numbering [I=0] of EP mapping.Yet next GOP 1 does not have register information in the EP mapping.In the EP mapping, register next again GOP 2, and its register information is kept in the table numbering [I=1] of EP mapping.Like this, in this example, the EP mapping is configured to wherein be recorded among the GOP of component content, about every register information at a distance from a GOP.

In the content recorded example in Figure 37 A, GOP 0 (EP mapping 0) and GOP10 (EP mapping 5) are that wherein I image (or whole GOP) is set to the non-GOP that is modified data.

Figure 37 B representes the register information of EP mapping.Under from the register information of said EP mapping, selecting the non-situation that is modified image, as the same, obtain cycle information (N) with reference to the described situation of Figure 36, and according to cycle selection information from the EP mapping of N=5.That is to say that option table numbering 0,5 etc. to be obtaining the I image information, and reproduce.Dispose said example, wherein in actual content (content shown in Figure 37 A), per 10 GOP are selected the non-I image that is modified.That is to say that mapping is carried out the messaging device acquisition of content playback and is modified image-related cycle information corresponding to the non-of registration form numbering that EP shines upon according to EP, and carries out reproduction.

Select the information of EP mapping table that the selection of the non-I of being modified image and reproduction can be performed to per 5 clauses and subclauses (5 GOP), thereby carry out special reproduction, for example only be set to the non-high-speed retrieval that is modified the I image of data.

To describe about through wherein being provided with the content of the non-I of being modified image with reference to Figure 38 now, carry out the for example processing example of the messaging device of high-speed retrieval of special reproduction with reference to the non-I of the being modified image information of EP mapping acquisition with the stable cycle from one.Be used to carry out special reproduction for example the messaging device of high-speed retrieval at first obtain the EP mapping shown in Figure 38 A.As previous described with reference to Figure 29 etc.; EP mapping (EP_map) is the data that are included in the clip information document (clip information), and the messaging device that is used for carrying out reproduction processes obtains the EP mapping from the clip information document of the AV data flow that will be reproduced corresponding to one.

Shown in Figure 38 A, the EP mapping comprises following information:

^*The quantity of the table in the EP mapping,

^*The PTS of I image (time of occurrence stamp).

The quantity of EP mapping table is to number the quantity of [I] with reference to the table that the EP that Figure 36 and 37 describes shines upon, and is equal to or less than the numbering of GOP numbering.

This sketch map register information of the EP mapping of presentation graphs 38a especially is in the data shown in Figure 38 B, and it is illustrated in the correlation between the PTS (time of occurrence stamp) of packet numbering at first (SPN) and I image of table numbering (I) within the EP mapping, I image.Supposing among these data, is table numbering (I)=0,5,10 etc. with being set to the non-image-related information of I that is modified data.

Be used to carry out special reproduction for example the reproducer of high-speed retrieval use one of following preference pattern; For example whether from safety VM, obtain, whether obtain or whether use predetermined fixed value in the contents attribute information from be recorded in information recording carrier; Obtain cycle information (N=5); According to cycle (N=5) option table numbering (I)=0,5 that obtains, 10 etc. I image information; Create a virtual EP mapping of forming by the for example selected I image information shown in Figure 38 C, and, carry out the reproduction processes of only forming by selected I image according to this EP mapping.According to said processing, can carry out reproduction processes and need not to carry out data transaction.

Figure 39 represent one all be registered in I image information in the EP mapping all be with corresponding to the example under the situation of the image-related information of the non-I that is modified data.EP mapping in Figure 39 A as Figure 38 A, comprises following information:

^*The quantity of EP mapping table,

^*The PTS of I image (time of occurrence stamp).

This register information that illustrates the EP mapping of presentation graphs 39A especially is in the data shown in Figure 39 B, and it is illustrated in the correlation between the PTS (time of occurrence stamp) of packet numbering at first (SPN) and I image of table numbering (I) within the EP mapping, I image.Supposing among these data, is all table numbering (I)=0,1,2 or the like with being set to the non-image-related information of I that is modified data.

Be used to carry out special reproduction for example the reproducer of high-speed retrieval use one of following preference pattern; For example whether from safety VM, obtain, whether obtain or whether use predetermined fixed value in the contents attribute information from be recorded in information recording carrier; Obtain cycle information (N=1); According to cycle (N=1) option table numbering (I)=0,1 that obtains, 2 etc. I image information; Create a virtual EP mapping of forming by the for example selected I image information shown in Figure 39 C, and, carry out the reproduction processes of only forming by selected I image according to this EP mapping.According to said processing, can carry out reproduction processes and need not to carry out data transaction.

Notice that in this example, the cycle is N=1, therefore can reproduce and need not to create a virtual EP who forms by the selected I image information shown in Figure 39 C and shine upon according to the original EP map information shown in Figure 39 B.Even in this case, can carry out special reproduction and need not data transaction, and need not to create a virtual EP mapping.Further, see, be that what be modified is desirable with the I image setting, but see that from the angle of high-speed retrieval only selecting the I image and showing in order in the equipment of I image, the processing capacity burden increases from the angle of picture breakdown.Like this, through processings that the I image that is not registered to EP mapping is made amendment, rather than, can realize picture breakdown and special reproduction simultaneously to being registered in the processing of making amendment of the I image of EP in shining upon.

Then, will carry out the flow process of the processing sequence of special (at a high speed) reproduction processes that is not accompanied by data transaction and describe with reference to the non-view data that is modified shown in Figure 40 to 43 about each predetermined period (N) being provided with through application.Note as stated; If special (at a high speed) reproduction processes is the high-speed retrieval that the relative low speed (for example 2x) of fuzzy allowance of deciphering is arranged; Then need not to select the non-I of being modified image (for example shown in the following flow process), and can control so that even in the scope of processing time control, select to be modified the I image.

Handling process shown in Figure 40 is that a reproduction processes unit at the main frame of the messaging device that is used for carrying out content playback (reproduction processes is used (program)) is from safety VM; When in increasing, carrying out initialization process, obtain to be equivalent to be set to the processing example under the situation of cycle information (N) at interval of the non-I image that is modified data corresponding to the title of medium (information recording carrier) or content.At first, in step S701, the reproduction processes unit of main frame (reproduction processes use (program)) obtains to be equivalent to be set to the cycle information (N) at the interval of the non-I image that is modified data from safety VM.Step S701a representes the processing of safe VM, and wherein safe VM obtains cycle information (N) from the security information that is provided with corresponding to the recorded content of information recording carrier, and it is offered reproduction processes unit (reproduction processes is used (program)).

In step S702; The reproduction processes equipment that has obtained cycle information (N) is according to the mapping of the EP within the clip information document; Acquisition is about the information of the I image that do not have data modification; The position that does not promptly have the I image of data modification, and as [SPN] and [PTS] of recovery time information, and only select the image to be applied to the image that special (at a high speed) reproduces from non-being modified.

Then; In step S703; Reproduction processes equipment reads the enciphered data corresponding to the selected image (image of in step S702, selecting) of forming the content (for example AV flow data) that will be reproduced from information recording carrier, and in step S704, carries out the decryption processing of the data that read.This decryption processing is the decryption processing of before describing with reference to Figure 18 to 22.

After this decryption processing, reproduction processes equipment is carried out decoding processing and content output in step S705.Said decoding processing is that for example mpeg decode is handled.Reproduction processes equipment is repeatedly carried out these processing (step S701 to S705) and is finished (end of title) or user up to the reproduction of content configuration data and import and suspend content playback (being among the step S711).In step S711, title finishes or the user imports under the situation of suspending content playback detecting, and said processing finishes.Above-mentioned is special (at a high speed) reproduction order that is not accompanied by the content of data transaction.

Like this, can carry out special (at a high speed) reproduction processes that is not accompanied by data transaction, and need not to use said special reproduction management information table corresponding to being set to the non-cycle information that is modified the I image information of data through using.

Handling process shown in Figure 41 is illustrated in the system and is set to the non-interval that is modified the I image of data with fixed value setting, and not to each content but with the processing sequence under the situation that stable period, (N) made amendment.

At first, in step S721, the reproduction processes unit of main frame (reproduction processes is used (program)) acquisition is equivalent to the cycle information (N) of the system that the is set to fixed value of I image spacing.Can use various types of technology; For example obtain as the fixed value of using the set point that is provided with in (program) in reproduction processes, obtain to be recorded in the fixed value that is provided with in fixed value information in the information recording carrier, the memory of acquisition etc., obtain this cycle information at messaging device.S721a representes and can handle cycle information (N) data that obtain by these.

In step S722; Shine upon according to the EP within the clip information document; The reproduction processes equipment that has obtained cycle information (N) obtains the information about the I image that does not have data modification; The position that does not promptly have the I image of data modification, and as [SPN] and [PTS] of recovery time information, and only select the image to be applied to the image that special (at a high speed) reproduces from non-being modified.Processing in following step S723 to S731 is identical with reference to the processing of Figure 40 description with before, therefore with the descriptions thereof are omitted.

Handling process shown in Figure 42 is represented an example, and it is variable wherein will to be set to being set to each content of the non-I image that is modified data.At first, in step S741, the reproduction processes unit of main frame (reproduction processes use (program)) obtains to be equivalent in the registration form of EP mapping, to be set to the cycle information (N) at the interval of the non-I image that is modified data from safety VM.

This cycle information is equivalent to the cycle information of the registration form of EP mapping.For example, during the EP that formerly describes with reference to Figure 38 shone upon, cycle information became (N=5), and in the EP mapping with reference to Figure 39 description formerly, cycle information becomes (N=1).Step S741a representes the processing of safe VM; Wherein safe VM obtains cycle information (N) from the security information that is provided with corresponding to the recorded content of information recording carrier; It is equivalent to the non-interval information that is modified image information within the I image information in the registration form that is recorded in the EP mapping, and it is offered reproduction processes unit (reproduction processes is used (program)).

In step S742; Shine upon according to the EP within the clip information document; The reproduction processes equipment that has obtained cycle information (N) obtains about the GOP that does not have data modification or the information of I image; Promptly there are not the GOP information of data modification or the position of I image, and as [SPN] and [PTS] of recovery time information, and only select the image to be applied to the image that special (at a high speed) reproduces from non-being modified.Processing in following step S743 to S751 is identical with reference to the processing of Figure 40 description with before, therefore with the descriptions thereof are omitted.

Handling process shown in Figure 43 is illustrated in the system and is set to the non-interval that is modified the I image of data with fixed value setting, and not to each content but with the processing sequence under the situation that stable period, (N) made amendment.

At first; In step S761; The reproduction processes unit of main frame (reproduction processes use (program)) obtains for system, to be set to the cycle information (N) of fixed value, promptly is equivalent in the registration form of EP mapping, to be set to the cycle information (N) at the interval of the non-I image that is modified data.

In order to obtain this cycle information (N); Can use various types of technology; For example acquisition obtains the fixed value information in the information recording carrier that is recorded in, the fixed value that acquisition is provided with etc. as the fixed value of using the set point that is provided with in (program) in reproduction processes in the memory of messaging device.S761a representes and can handle the cycle information (N) that obtains by these.

This cycle information is equivalent to the cycle information of the registration form of EP mapping.For example, during the EP that formerly describes with reference to Figure 38 shone upon, cycle information became (N=5), and in the EP mapping with reference to Figure 39 description formerly, cycle information becomes (N=1).In step S762; Shine upon according to the EP within the clip information document; The reproduction processes equipment that has obtained cycle information (N) obtains about the GOP that does not have data modification or the information of I image; Promptly there are not the GOP information of data modification or the position of I image, and as [SPN] and [PTS] of recovery time information, and only select the image to be applied to the image that special (at a high speed) reproduces from non-being modified.Processing in following step S763 to S771 is identical with reference to the processing of Figure 40 description with before, therefore with the descriptions thereof are omitted.

Figure 44 representes that an explanation is used to obtain the special reproduction management information table with reference to Figure 27 and 28 descriptions; The EP mapping of perhaps describing with reference to Figure 31; The cycle information of perhaps describing (N) with reference to Figure 36 to 43, and carry out the for example block diagram of the function of the messaging device of high-speed retrieval (reproducer) of special reproduction.

The non-I of being modified an image selected cell 721 is carried out from the content that will be reproduced and is selected as the non-I treatment of picture that is modified data.As the processing of shining upon 702 (EP mappings for example shown in Figure 31) or cycle information (N) 703, carry out this processing according to special reproduction management information table 701 (the for example table shown in Figure 27 and 28) or EP corresponding to the content that will be reproduced.Notice that these information obtain through from information recording carrier, directly reading perhaps to read via safety VM.

The non-I image selected cell 721 that is modified is carried out I treatment of picture of each predetermined period selection, selects the I image that is modified data as non-then.Especially; The non-I of being modified image selected cell 721 is carried out the cycle information that is used to obtain to be equivalent to the registration form of being shone upon as EP by the cycle information at the non-interval that is modified GOP that data form or I image; And, from the EP mapping, obtain to be set to the non-information processing that is modified the I image of data according to this cycle information.And, the non-I of being modified image selected cell 721 carry out be used for according to the unmodifiable fixed cycle information of each content, or, select as the non-I treatment of picture that is modified data corresponding to the cycle information that is provided with according to content of a content.

The decoding processing by the I image of the non-I of being modified image selected cell 721 selections is carried out in the non-picture decoding unit 722 that is modified, and the I image that content output device 723 is exported as decoded result.According to this processing method, can realize for example high-speed retrieval and need not to stand data transaction of special reproduction.

8, the configuration of messaging device

Then, will carry out being used to carry out the description of application with reference to Figure 45 as the Hardware configuration example of the messaging device of main frame about one.A messaging device 800 has a CPU809; It comprises OS, content playback and records application program, mutual authentication processing, is accompanied by for example above-mentioned data conversion treatment of the various processing of content playback or the like and carries out data processing according to all kinds of programs; ROM 808 as the memory block of program, parameter etc.; Memory 810; And the I/O I/F 802 that is used for the I/O digital signal; 804, one of I/O I/F that an A/D who is used for the I/O analog signal, D/A converter 805 arranged is used to carry out the MPEG codec 803 that the Code And Decode of mpeg data is handled, and is used to carry out the TS-PS processing unit 806 that TS (MPTS)-PS (program flow) handles; Be used to carry out the for example cipher processing apparatus 807 of the decryption processing of checking, encrypted content etc. each other of all kinds of encryptions; The recording medium 812 of hard disk for example, and the go forward side by side driver 811 of I/O of line data recoding/reproduction signal of activation record medium 812, wherein each square all is connected to a bus 801.

With messaging device (main frame) 800 through a connecting bus for example atapi bus link to each other with driver.Via digital signal I/O I/F 802 I/O correction charts, content etc.Through cipher processing apparatus 807 application examples such as aes algorithm etc., carry out encryption and decryption processing.

The program that attention will be used to carry out content playback or recording processing for example is kept within the ROM808, and when executive program as required, uses storage and the service area of memory 810 as a parameter and data.

ROM 808 or recording medium 812 preserved for example PKI, a private key that is used for a main frame, a public key certificate that is used for this main frame of an administrative center, and further, and the driver CRL of tabulation etc. is reorientated in conduct.

In reproduction of content or when outwards exporting; Use a data conversion treatment program that from information recording carrier, obtains; Various processing sequences according to before in handling example, describing are carried out processing, for example the content of enabling decryption of encrypted, reduction correction chart, write translation data or the like according to the data that are kept in the correction chart.

Described the present invention in detail up to now with reference to specific embodiments.Yet, to be familiar with this technological people and can to make amendment and replace and need not to deviate from essence of the present invention said embodiment, this is self-explantory.That is to say that the present invention is open with typical form, and should not explain on being limited property ground.The judgement of essence of the present invention should partly be carried out with reference to claim.

Notice that a series of processing of description can be carried out through hardware, software or both combinations in this manual.Under the situation of using software executing to handle, the program of recording processing order can be installed in the memory within the computer that embeds specialized hardware and carry out, and perhaps this program can be installed in the all-purpose computer that can carry out all kinds of processing.

For example, this program can be recorded in the hard disk or ROM (read-only memory) as recording medium in advance.Perhaps, this program can temporarily or for good and all be preserved (record) in removable medium for example in floppy disk, CD-ROM (compact disc read-only memory), MO (magneto-optic) dish, DVD (digital multi disk), disk, the semiconductor memory etc.This removable recording medium can be used as so-called software kit and provides.

Attention except from above-described removable recording medium for example to the computer installation procedure; Program also can wirelessly be transferred to computer from download address; Perhaps use cable via network for example LAN (local area network (LAN)) or Internet transmission to computer; Simultaneously a computer receives so program of transmission, and with its recording medium that is installed in an embedding for example in the hard disk etc.

And all kinds of processing of describing in this manual are not limited to carry out with described time sequencing, and according to the disposal ability of carrying out the equipment of handling, can walk abreast or execution independently.The system of noting being used for this specification refers to the logic assembling scheme of a plurality of equipment, is in the scheme in the same shell and be not limited to all component equipment.

Claims

1. messaging device, it is used to carry out the reproduction processes that receives the mpeg encoded processed content that part content configuration data wherein are set to be modified data, and it comprises:

Be used for selecting an I image as the non-non-I of the being modified image selected cell that is modified data from said content; And

Be used to carry out the decoding processing of the non-I of the being modified image of selecting by the said non-I of being modified image selected cell and the decoding output processing unit of output processing,

Wherein like this configuration said non-be modified I image selected cell so that:

Execution through use the table that is provided with corresponding to the content that will be reproduced shine upon with the entrance at least one, obtain a processing as the position of the non-I image that is modified data,

Execution is selected an I image for each predetermined period, selects one then as the non-I treatment of picture that is modified data,

Obtain and be equivalent to by the cycle information at the non-interval that is modified GOP that data form or I image cycle information as entrance mapping registration form; And from the mapping of entrance, obtain the non-information that is modified the I image of data that is set to according to said cycle information

Carry out according to for the unmodifiable fixed cycle information of each content, promptly be equivalent to the information that is modified the interval of GOP that data form or I image by non-, select one as the non-I treatment of picture that is modified data,

Carry out according to cycle information corresponding to content; Said cycle information be according to the content setting and be to be equivalent to the cycle information that is modified the interval of GOP that data form or I image by non-; Select one as the non-I treatment of picture that is modified data, perhaps

The mapping of acquisition entrance; Said entrance is mapped with a plurality of corresponding to a packet numbering and the clauses and subclauses that show time mark PTS as address information; And, select a non-I image that is modified for the clauses and subclauses that are registered in each predetermined period in the mapping of entrance.

2. according to the messaging device of claim 1, wherein said decoding output processing unit is configured to, and uses the non-I of the being modified image of being selected by the said non-I of being modified image selected cell to carry out high-speed retrieval.

3. information processing method, it is used to carry out the reproduction processes that receives the mpeg encoded processed content that part content configuration data wherein are set to be modified data, and it comprises the steps:

Be used for selecting an I image to select as the non-non-I of the being modified image that is modified data from said content; And

The decoding output that is used to carry out the decoding processing of the non-I of the being modified image of being selected by the said non-I of being modified image selection step and export processing is handled,

The wherein said non-I of being modified image selects to comprise step:

Execution is obtained and is equivalent to the cycle information that is modified the interval of GOP that data form or I image by non-, and obtains from the mapping of entrance according to said cycle information and to be set to the non-information processing that is modified the I image of data,

Carry out according to for the unmodifiable fixed cycle information of each content, promptly be equivalent to the cycle information that is modified the interval of GOP that data form or I image by non-, select one as the non-I treatment of picture that is modified data,

4. according to the information processing method of claim 3, wherein said decoding output is handled to use by the said non-I of being modified image and is selected the non-I of the being modified image of processing selecting to carry out high-speed retrieval.