JP2006031519A - Information processing device and information processing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that a user cannot quickly understand an operation to be performed to content since appropriate rights information can not be presented to the user when a plurality of pieces of rights information exist for one content. <P>SOLUTION: An information processing device comprises a first reading unit for reading a first rights information, a second reading unit for reading a second rights information from a storage medium, a rights information combining unit for producing combined rights information which is combined with the first rights information and the second rights information read from the respective reading units, and a displaying unit for displaying the combined rights information. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electronic device capable of reproducing and browsing digital data having a copyright.

  In recent years, various types of media such as semiconductor recording media, magnetic disks, optical disks, and magneto-optical disks have been used as media for recording various digital data (hereinafter, contents) such as music contents and moving image contents.

  In order to protect the copyright of content, electronic devices such as music recorders and music players store the rights information describing the terms of use, such as the number of times the content has been played and the number of times it has been copied, at the time of recording. At this time, a function of restricting user's operation based on the right information is being installed.

  However, if the rights information can describe various terms of use in order to fulfill various requests from the copyright holder of the content, it will be difficult for the user to quickly understand the operations that can be performed on the content. was there.

Therefore, an information processing apparatus (see Patent Document 1) that displays an icon corresponding to content right information has been proposed so that the user can quickly understand the operations that can be performed on the content.
JP 2002-123266 A

  However, the above information processing apparatus has the following problems.

  Various types of content right information are formulated according to the recording medium for recording the content and the type of content. Also, depending on the electronic device, the format of rights information that can be read may be limited.

  Therefore, in order to make it possible for many electronic devices to read the rights information, a plurality of rights information for one content may be stored in different formats on a recording medium.

  In the above information processing apparatus, when a plurality of rights information for one content is stored in a recording medium, appropriate rights information cannot be presented to the user, and operations that can be performed on the content Cannot be understood quickly by the user.

  In the present invention, in view of the above problems, even when a plurality of rights information for one content is stored in a recording medium, the user can quickly understand operations that can be performed on the content.

  In order to solve the above-described problem, an information processing apparatus according to the present invention is an information processing apparatus that processes a recording medium capable of storing right information capable of describing a usage rule for content, and the information processing apparatus includes: A first reading unit for reading the right information from the recording medium, a second reading unit for reading the second right information from the previous recording medium, the first right information and the second right information. A right information combining unit that creates combined combined right information.

  By using the information processing apparatus according to the present invention, even if a plurality of rights information for one content is stored in the recording medium, the user can quickly understand the operations that can be performed on the content. The convenience of the processing apparatus can be improved.

  Hereinafter, embodiments of an information recording medium according to the present invention will be described with reference to the drawings.

(Embodiment 1)
Hereinafter, Embodiment 1 of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram illustrating a configuration of a semiconductor recording medium 100 that is a recording medium storing data processed by the information processing apparatus according to the present embodiment.

  The semiconductor recording medium 100 includes a host interface unit 110, a control unit 120, and a recording area 130.

  The host interface unit 110 has a function for the semiconductor recording medium 100 to exchange information with the information processing apparatus.

  The control unit 120 has a function of performing internal control of the semiconductor recording medium 100. Read and write commands received from the information processing apparatus are interpreted, and the recording area 130 is accessed. If necessary, processing for notifying the result to the information processing apparatus via the host interface unit 110 is performed.

  The recording area 130 has a function of storing digital data, and is physically composed of a nonvolatile memory such as a flash memory, and includes a special area 131, a protection area 132, and a normal area 133. Shall.

  The special area 131 is an area in which digital data used internally by the semiconductor recording medium 100 is stored, and is an area that cannot be directly accessed by the information processing apparatus. It is assumed that a media unique key that is a unique value in each semiconductor recording medium 100 is stored when the semiconductor recording medium 100 is manufactured.

  The protected area 132 is an area that can be accessed only when the information processing apparatus and the semiconductor recording medium 100 authenticate each other. Therefore, only an information processing apparatus that has succeeded in authentication can read and write arbitrary digital data.

  The normal area 133 is an area in which arbitrary digital data from the information processing apparatus can be read / written without particularly authenticating the authenticity of the information processing apparatus and the semiconductor recording medium 100.

  The protection area 132 and the normal area 133 are each composed of a search information storage area and a data area.

  The data area is an area for storing arbitrary digital data.

  The search information storage area is an area for storing information (address, size, etc.) necessary for the host device to retrieve each digital data stored in the data area.

  In the present embodiment, each digital data is managed by a FAT file system, and an area storing information (file system management information) necessary for the FAT file system is the search information storage area. To do.

  FIG. 2 shows the configuration of the FAT file system. In FIG. 2, the search information storage area stores a master boot record partition table that stores information for managing the data area by dividing it into a plurality of areas called partitions, and stores management information in one partition. A partition boot sector, a FAT table 1 and a FAT table 2 indicating storage locations of data included in the file, and a root directory entry for storing information on files and directories existing immediately under the root directory. The data area is divided and managed in units called clusters. Details of the FAT file system beyond this are omitted.

  Next, one of the content storage methods in this embodiment will be described with reference to FIGS. Hereinafter, the content storage method according to this method is referred to as a first format.

  FIG. 3 is a diagram showing a configuration in which content is stored in the semiconductor recording medium 100 in the first format.

  3, the semiconductor recording medium 100 includes a media unique key, an encryption service unique key, and N pieces of encryption right information (first form encryption right information # 1,...・ Encrypted rights information #N in the first format and N encrypted content keys in the first format (encrypted content key # 1 in the first format,... Encrypted content key #N) and N pieces of encrypted content in the first format (encrypted content # 1 in the first format, ..., encrypted content #N in the first format) are recorded. ing.

  The media unique key is stored in the special area 131 when the semiconductor recording medium 100 is manufactured. It is assumed that the information processing apparatus can read the media unique key only when the authenticity of the semiconductor recording medium 100 and each other is authenticated.

  The encrypted service unique key is data obtained by encrypting a service unique key using a common key encryption method using a media unique key, and can be decrypted using the media unique key.

  The encrypted right information in the first format is data obtained by encrypting the right information in the first format describing the terms of use of the content by the common key encryption method using the service unique key, and uses the service unique key. Can be decrypted.

  The encrypted content key of the first format is data obtained by encrypting the content key of the first format using a common key encryption method using a service unique key, and can be decrypted using the service unique key. .

  The encrypted content in the first format is data obtained by encrypting the content in the first format by the common key encryption method using the content key in the first format, and using the content key in the first format. Can be decrypted.

  FIG. 4 is a diagram showing a configuration of right information in the first format.

  In FIG. 4, the right information of the first format is composed of a 1st generation duplication permission flag and a key available time.

  The 1st generation duplication permission flag is data that takes a true or false value. In the case of true, it indicates that the content of the first format can be copied to another recording medium only for 1 generation, This indicates that copying of content in the first format is prohibited. The fact that only one generation can be copied means that when a copy is recorded on another recording medium, the copy is recorded as prohibited content, and no more copies can be made.

  The key available time indicates the remaining time in which the content key of the first format can be used. When the key available time is 0, it indicates that there is no limit on the time for which the content key of the first format can be used.

  Next, one of the content storage methods in this embodiment will be described with reference to FIGS. Hereinafter, a content storage method according to this method is referred to as a second format.

  FIG. 5 is a diagram showing a configuration in which content is stored in the semiconductor recording medium 100 in the second format.

  5, the semiconductor recording medium 100 includes a media unique key and N pieces of encryption right information (second form encryption right information # 1,..., Second form). Encrypted right information #N) and N second-format encrypted content keys (second-format encrypted content key # 1,..., Second-format encrypted content key #N). N pieces of encrypted content in the second format (encrypted content # 1 in the second format,..., Encrypted content #N in the second format) are recorded.

  The media unique key is stored in the special area 131 when the semiconductor recording medium 100 is manufactured. It is assumed that the information processing apparatus can read the media unique key only when the authenticity of the semiconductor recording medium 100 and each other is authenticated.

  The encryption right information in the second format is data obtained by encrypting the right information in the second format describing the terms of use of the content by a common key encryption method using the media unique key, and uses the media unique key. Can be decrypted.

  The encrypted content key of the second format is data obtained by encrypting the content key of the second format by the common key encryption method using the media unique key, and can be decrypted using the media unique key. .

  The encrypted content in the second format is data obtained by encrypting the content in the second format by the common key encryption method using the content key in the second format, and using the content key in the second format. Can be decrypted.

  FIG. 6 is a diagram showing a configuration of right information in the second format.

  In FIG. 6, the right information in the second format includes a movement permission flag, a viewing flag, and a trial listening time.

  The movement permission flag is data that takes a true or false value. If it is true, it indicates that the content in the second format can be moved to another recording medium. This indicates that movement of content in the format is prohibited.

  The audition flag is data that takes a true or false value. If true, it indicates that the content can be reproduced only for the time indicated by the audition time, and if false, reproduction of the content in the second format. It shows that there is no time limit.

  The trial listening time is data indicating a time during which the content can be reproduced when the trial listening flag is true.

  In the present embodiment, the content key of the first format has the same format (data size, etc.) as the content key of the second format, and the content of the first format is the content and format of the second format. (Encoding method, file format, etc.) and encryption method are the same. Therefore, the content can be stored in the semiconductor recording medium 100 by a storage method (hereinafter referred to as a merged storage method) in which the content storage method of the first format and the content storage method of the second format are merged.

  FIG. 7 is a diagram showing a configuration in which content is stored in the semiconductor recording medium 100 by the merged storage method.

  7, the semiconductor recording medium 100 includes a media unique key, an encryption service unique key, and N pieces of encryption right information (first form encryption right information # 1,...・ Encrypted rights information #N in the first format and N encrypted content keys in the first format (encrypted content key # 1 in the first format,... Encrypted content key #N) and N pieces of second form encryption right information (second form encryption right information # 1,..., Second form encryption right information #N) N encrypted content keys in the second format (encrypted content key # 1 in the second format,..., Encrypted content key #N in the second format), and N encrypted content keys. Content (encrypted content # 1,..., Encrypted content #N) is recorded.

  The media unique key is stored in the special area 131 when the semiconductor recording medium 100 is manufactured, as in the first format and the second format. It is assumed that the information processing apparatus can read the media unique key only when the authenticity of the semiconductor recording medium 100 and each other is authenticated.

  Similar to the first format, the encrypted service unique key is data obtained by encrypting the service unique key using a common key encryption method using the media unique key, and can be decrypted using the media unique key. .

  The encrypted right information in the first format is data obtained by encrypting the right information in the first format in which the terms of use of the content are described by the common key encryption method using the service unique key, as in the first format. And can be decrypted using the service unique key.

  The encrypted content key in the first format is data obtained by encrypting the content key by the common key encryption method using the service unique key, as in the first format, and is decrypted using the service unique key. be able to.

  The encrypted right information in the second format is data obtained by encrypting the right information in the second format describing the terms of use of the content by the common key encryption method using the media unique key, as in the second format. And can be decrypted using the media unique key.

  Similarly to the second format, the encrypted content key in the second format is data obtained by encrypting the content key using a common key encryption method using a media unique key, and is decrypted using the media unique key. be able to.

  Encrypted content is data obtained by encrypting content using a common key encryption method using a content key, and can be decrypted using the content key.

  In FIG. 7, the encryption rights information of the first format, the encrypted content key of the first format, the encryption rights information of the second format, and the encrypted content key of the second format for all the contents. However, in the present embodiment, when there is only the encryption right information of the first format and the encrypted content key of the first format, the encryption right information of the second format and the second There may be cases where only the encrypted content key of the format exists.

  FIG. 8 is a diagram illustrating a configuration of the information processing apparatus according to the present embodiment. In FIG. 8, the solid line indicates the flow of content data, and the dotted line indicates the flow of right information and content key.

  The information processing apparatus 800 includes a semiconductor recording medium access unit 810, a first format right information reading unit 820, a first format right information converting unit 821, a second format right information reading unit 830, The second format right information conversion unit 831, right information combination unit 840, display unit 850, content reading unit 860, content reproduction unit 870, and output unit 880 are included.

  The semiconductor recording medium access unit 810 has a function of mounting a semiconductor recording medium, accessing the mounted semiconductor recording medium 100, reading a media unique key stored in a special area of the semiconductor recording medium, and a protection area. Is provided with a function of performing an authentication process necessary for reading and writing arbitrary digital data stored in.

  The first format right information reading unit 820 reads and decrypts the encryption service unique key, the first format encryption right information, and the first format encrypted content key stored in the semiconductor recording medium 100. It has a function to do.

  The rights information conversion unit of the first format has a function of converting the rights information of the first format into common rights information that can be combined with each other.

  The second format right information reading unit 830 has a function of reading and decrypting the second format encrypted right information and the second format encrypted content key stored in the semiconductor recording medium 100. .

  The rights information conversion unit of the second format has a function of converting the rights information of the second format into common rights information.

  The right information combining unit 840 has a function of creating combined right information by combining the first right information and the second right information.

  The display unit 850 has a function of displaying the right information combined by the right information combining unit 840.

  The content reading unit 860 has a function of reading the encrypted content stored in the semiconductor recording medium 100 and passing the encrypted content to the content reproduction unit 870.

  The content reproduction unit 870 decrypts the encrypted content read by the content reading unit using the content key read by the first right information reading unit 820 or the second right information reading unit 830, and according to the format of the content It has a function of performing expansion processing and reproducing content. A decryptor 871 and a decoder 872 are included.

  The decryptor 871 performs a process of decrypting the encrypted content with the content key.

  When the content decrypted by the decryptor 871 is compressed, the decoder 872 performs a process of decompressing and restoring the state before compression.

  The output unit 880 has a function of outputting the content data reproduced by the content reproduction unit.

  FIG. 9 is a diagram illustrating a configuration of combined right information combined by the right information combining unit 840.

  In FIG. 9, combined right information includes right information existence information in which a flag indicating that the right information of each format exists, the right described in the right information of the first format, and the second format. It consists of common rights information that stores the rights that are combined with the rights described in the rights information.

  The right information presence information is composed of a first right information presence flag and a second right information presence flag.

  The first right information presence flag is data that takes a true or false value. If true, it indicates that the first right information corresponding to the content exists, and if false, it corresponds to the content. It indicates that the first right information does not exist.

  The second right information presence flag is data that takes a true or false value. If true, it indicates that the second right information corresponding to the content exists, and if false, it corresponds to the content. This indicates that the second right information does not exist.

  The common right information includes a 1st generation duplication permission flag, a movement permission flag, a reproduction time limitless flag, and a reproducible time.

  The 1st generation duplication permission flag is data that takes a true or false value. If it is true, it indicates that the content can be copied to another recording medium only for 1 generation. Indicates that copying is prohibited.

  The movement permission flag is data that takes a true or false value, as in the case of the right information in the second format, and indicates that the content can be moved to another recording medium if it is true. This indicates that the movement of the content is prohibited.

  The no play time limit flag is data that takes a true or false value. If true, it indicates that there is no limit on the play time of the content. If false, the content is only displayed for the time indicated by the playable time. It indicates that it can be played back.

  The reproducible time is data indicating a time during which the content can be replayed when the replay time limitless flag is false.

  Hereinafter, a procedure in which the right information conversion unit 821 in the first format converts the right information in the first format into common rights information will be described with reference to FIG.

  As shown in FIG. 9, the common right information is composed of a one-generation duplication permission flag, a movement permission flag, a reproduction time limitless flag, and a reproducible time. Information can be created.

  The first generation duplication permission flag of the right information of the first format is set in the first generation duplication permission flag of the common right information.

  The movement permission flag of the common right information is set to false. This is because the right information in the first format does not have a movement permission flag and cannot always be moved.

  The no-replay time limit flag of the common right information is set to true when the key usable time of the right information in the first format is 0, and set to false otherwise. This is because when the key available time is 0, it indicates that there is no restriction on the reproduction time.

  The key usable time of the right information in the first format is set as the playable time of the common right information. This is because the content key in the first format cannot be used after the key available time has passed, and therefore the decryptor 871 cannot decrypt the content, and therefore the content playback unit 870 cannot play back the content. This is because the key available time indicates the remaining time during which the content can be reproduced.

Through the above procedure, the right information in the first format is the common right information (hereinafter referred to as the first common right information).
Is converted to

  Hereinafter, a procedure in which the right information conversion unit 831 in the second format converts the rights information in the second format into common rights information will be described with reference to FIG.

  As shown in FIG. 9, the common right information is composed of a one-generation duplication permission flag, a movement permission flag, a reproduction time limitless flag, and a reproducible time. Information can be created.

  False is set in the 1st generation duplication permission flag of the common right information. This is because the right information in the second format does not have a 1st generation duplication permission flag, and 1st generation duplication is always impossible.

  The movement permission flag for the right information in the second format is set in the movement permission flag for the common right information.

  In the common rights information no reproduction time limit flag, a value obtained by inverting the true / false of the audition flag of the rights information in the second format is set. This is because when the trial listening flag is true, it indicates that there is a limit on the reproducible time, and when the trial listening flag is false, it indicates that there is no limit on the reproducible time.

  The preview time of the right information in the second format is set as the reproducible time of the common right information. This is because the trial listening time indicates the content reproducible time.

Through the above procedure, the rights information in the second format becomes the common rights information (hereinafter, the second common rights information).
Is converted to

  Hereinafter, a process in which the right information combining unit 840 creates combined right information by combining the first common right information and the second common right information will be described with reference to FIGS.

  FIGS. 12 and 13 are flowcharts showing the flow of processing in which the right information combining unit 840 creates combined right information by combining the first common right information and the second common right information.

  In S1210, an initial value is set in the common right information of the combined right information. Setting the initial value means that the first generation duplication permission flag is set to false, the movement permission flag is set to false, the playback time limitless flag is set to false, and the playable time is set to 0.

  In S1220, it is confirmed whether or not the right information of the first format exists. When it exists, it changes to S1230, and when it does not exist, it changes to S1260.

  In S1230, the first right information presence flag of the combined right information is set to true.

  In S1240, the right information in the first format is converted into the first common right information by the procedure shown in FIG.

  In S1250, the sum of the common right information of the combined right information and the first common right information is calculated and set as the common right information of the combined right information. The result of calculating the sum is as follows. In the case of flags such as a 1st generation duplication permission flag, a movement permission flag, and a playback time limitless flag, the sum means a logical sum, and if one of the flags is true, the result of calculating the sum is true. If both are false, the result of calculating the sum is false. In the case of reproducible time, the result of calculating the sum is the result of adding both values.

  In S1260, the first right information presence flag of the combined right information is set to false.

  In step S1310, it is confirmed whether right information of the second format exists. If it exists, the process transits to S1320, and if it does not exist, the process transits to S1350.

  In S1320, the second right information presence flag of the combined right information is set to true.

  In S1330, the right information in the second format is converted into the second common right information by the procedure shown in FIG.

  In S1340, the sum of the common right information of the combined right information and the second common right information is calculated and set as the common right information of the combined right information. The result of calculating the sum is the same as S1250.

  In S1350, false is set to the first right information presence flag of the combined right information.

  Through the above processing, the right information that is a combination of the first common right information and the second common right information is created as combined right information. In the combined right information, the usage rule described in the first right information and the usage rule described in the second right information are combined with a usage rule that combines operations that can be performed on the content. Yes. Therefore, by displaying the combined right information on the display unit, the user can quickly understand the operations that can be performed on the content.

  14, 15, and 16 are examples of images displayed on the display unit.

  FIG. 14 is an example of an image displaying existing rights information.

  In FIG. 14, it is assumed that there are four contents, and titles “SONG1”, “SONG2”, “SONG3”, and “SONG4” are added to the contents, respectively.

  Each row in FIG. 14 indicates a right information presence flag in the first format of the combined right information, a right information presence flag in the second format, and a content title. If the right information presence flag of the first format is true, an icon 1230 is displayed in the column 1210, and if it is false, an icon 1240 is displayed in the column 1210. Similarly, when the right information existence flag in the second format is true, an icon 1230 is displayed in the column 1220, and when it is false, an icon 1240 is displayed in the column 1220.

  With the above display, the user can quickly understand what type of rights information exists in which content. For example, content that can be played back on a player that supports only the first format can be quickly understood. It becomes possible to do.

  FIG. 15 is an example of an image displaying operations that a user can perform on the content.

  15, it is assumed that there are four contents as in FIG. 14, and titles “SONG1”, “SONG2”, “SONG3”, and “SONG4” are added to the contents, respectively.

  Each row in FIG. 15 shows a first generation duplication permission flag, a movement permission flag, and a content title of the combined right information. If the duplication permission flag is true, an icon 1330 is displayed in the column 1310. Similarly, when the movement permission flag is true, an icon 1340 is displayed in the column 1310.

  With the above display, the user can quickly understand the operations that can be performed on the content.

  FIG. 16 is an example of an image displaying the content listening time.

  In FIG. 16, there are four contents as in FIG. 14, and titles “SONG1”, “SONG2”, “SONG3”, and “SONG4” are added to the contents, respectively.

  Each row in FIG. 16 indicates a trial listening flag, a trial listening time, and a content title. When the audition flag is true, the audition time is displayed in the column 1410, and when it is false, the icon 1430 is displayed in the column 1410.

  With the above display, the user can quickly understand the remaining trial listening time of the content.

  Although the present invention has been described based on the above embodiment, it is needless to say that the present invention is not limited to the above embodiment. Various modifications can be made without departing from the spirit of the present invention. The following cases are also included in the present invention.

  (1) Although the semiconductor recording medium has been described in this embodiment, the present invention is effective as long as it is a recording medium capable of recording digital data, such as a magnetic disk and a magneto-optical disk, as well as the semiconductor recording medium. .

  (2) In this embodiment, the FAT file system is used in the search information storage area. However, the present invention is not limited to the FAT file system, and other file systems such as FAT32 and UDF may be used. You may manage the size, recording address, etc. without using them.

  (3) In this embodiment, the storage location of the encrypted content key and the encryption right information is the normal area 133 in the first format and the protected area 132 in the second format. However, the present invention is not limited to this. is not. The storage location of the encrypted content key and the encrypted right information is arbitrary regardless of the format. Similarly, the storage location of the encrypted content is not limited to this.

  (4) In the present embodiment, the key for encrypting the content key is the service unique key in the first format and the media unique key in the second format, but the present invention is not limited to this.

  (5) In the present embodiment, there is right information for describing the terms of use, but even if there is no right information, there is right information that only the content key exists and copying is not permitted. If so, there is no need for rights information.

  (6) In the present embodiment, the right information combining unit combines the two types of right information, the first right information and the second right information. May be combined.

  (7) In the present embodiment, the content reproduction unit 870 includes the decoder 872, but if the content is not compressed and does not require decompression processing, the content reproduction unit 870 may not include the decoder 872.

  (8) In the present embodiment, the right information in the first format is composed of the 1st generation duplication permission flag and the key available time, but is not limited thereto, and may be composed of other information. . Similarly, the second right information may be composed of other information.

  (9) In the present embodiment, the right information in the first format is converted into the first common right information by the procedure shown in FIG. 10, but the present invention is not limited to this, and the right indicated by the right information in the first format. Any procedure may be used as long as the rights indicated by the first common right information are the same. Similarly, the rights information in the second format is converted into the second common rights information by the procedure shown in FIG. 11, but the present invention is not limited to this. The rights indicated by the rights information in the second format and the second common rights information Any procedure may be used as long as the rights indicated by the rights information are the same.

  (10) In this embodiment, the combined right information combined by the right information combining unit 840 is displayed on the display unit 850. However, the present invention is not limited to this, and the combined right information is recorded on the semiconductor recording medium 100 or combined right information. Other processing such as transferring the information to another information processing apparatus may be performed.

  An information processing apparatus according to the present invention is an information processing apparatus that processes a recording medium storing rights information describing a usage rule for content, and the recording medium stores first rights information in a first format. And the second right information can be stored in a second format, wherein the information processing apparatus reads the first right information from the recording medium. A second reading unit for reading the second right information from the recording medium, and combined right information obtained by combining the first right information and the second right information read by the reading unit. A right information combining unit to be created and a display unit for displaying the combined right information are provided. Therefore, even when a plurality of rights information for one content is stored in the recording medium, the user can quickly understand the operations that can be performed on the content, thereby improving the convenience of the information processing apparatus. It can also be applied to applications that require.

The figure which showed the structure of the semiconductor recording medium which recorded the data which the information processing apparatus in Embodiment 1 of this invention processes The block diagram which showed the structure of the FAT file system in Embodiment 1 of this invention The block diagram which showed the structure which stored the content in the semiconductor recording medium by the 1st format in Embodiment 1 of this invention The block diagram which showed the structure of the rights information of the 1st format in Embodiment 1 of this invention The block diagram which showed the structure which stored the content in the semiconductor recording medium by the 2nd format in Embodiment 1 of this invention The block diagram which showed the structure of the rights information of the 2nd format in Embodiment 1 of this invention 1 is a block diagram showing a configuration in which content is stored in a semiconductor recording medium 100 by a merged storage method according to Embodiment 1 of the present invention. The block diagram which showed the structure of the information processing apparatus in Embodiment 1 of this invention The block diagram which showed the structure of the binding right information in Embodiment 1 of this invention The block diagram which showed the procedure in which the rights information conversion part of a 1st format converts the rights information of a 1st format into common rights information The block diagram which showed the procedure in which the rights information conversion part of a 2nd format converts the rights information of a 2nd format into common rights information The flowchart which shows the flow of the process which produces the combined rights information by combining the rights information of the 1st format and the rights information of the 2nd format in Embodiment 1 of this invention The flowchart which shows the flow of the process which produces the combined rights information by combining the rights information of the 1st format and the rights information of the 2nd format in Embodiment 1 of this invention Schematic diagram showing an example of an image displaying existing rights information in Embodiment 1 of the present invention Schematic diagram showing an example of an image displaying operations that a user can perform on the content according to Embodiment 1 of the present invention Schematic diagram showing an example of an image displaying the content listening time in Embodiment 1 of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Semiconductor recording medium 110 Host interface part 120 Control part 130 Recording area 131 Special area 132 Protection area 133 Normal area | region 800 Information processing apparatus 810 Semiconductor recording medium access part 820 1st form rights information reading part 821 1st form rights Information conversion unit 830 Second format right information reading unit 831 Second format right information conversion unit 840 Rights information combining unit 850 Display unit 860 Content reading unit 870 Content playback unit 871 Decryptor 872 Decoder 880 Output unit

Claims (6)

An information processing apparatus for processing a recording medium storing a plurality of rights information capable of describing content terms of use,
The information processing apparatus includes: a first reading unit that reads first right information from the recording medium;
A second reading unit for reading second right information from the recording medium;
An information processing apparatus comprising: a right information combining unit that creates combined right information by combining the first right information and the second right information. The information processing apparatus according to claim 1,
The information processing apparatus includes: a first right information conversion unit that converts the first right information into rights information in a common format that can be combined with each other;
A second right information conversion unit for converting the second right information into the right information in the common format,
The information processing apparatus, wherein the right information combining unit creates the combined right information by combining the right information in the common format. An information processing apparatus according to claim 1 or claim 2,
The information processing apparatus includes a display unit that displays the combined right information,
The display unit displays a first icon when the first right information is stored in the recording medium;
An information processing apparatus, wherein a second icon is displayed when the second right information is stored in the recording medium. An information processing apparatus for processing a recording medium storing a plurality of content keys for encrypting content,
The information processing apparatus includes: a first reading unit that reads a first content key;
A second reading unit for reading the second content key;
A display unit that displays information about the key of the content,
The display unit displays a first icon when the first content key is stored in the recording medium;
An information processing apparatus, wherein a second icon is displayed when the second content key is stored in the recording medium. An information processing method for processing a recording medium storing rights information capable of describing a content usage rule,
The information processing method includes reading first rights information from the recording medium;
Reading second right information from the recording medium;
Creating a combined right information that combines the first right information and the second right information. An information processing method according to claim 5,
The information processing method includes converting the first rights information into rights information in a common format that can be combined with each other;
Converting the rights information in the second format into rights information in the common format.

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