Abstract: A system includes of a main device and a recording medium device. The main device includes a reception unit that receives a digital work from an external distribution server, an internal storage area for storing the digital work, a playback unit that plays back the digital work, and a unique information storage area for storing information that is unique to the main device. The main device also includes an encryption unit that encrypts the digital work using the unique information, a decryption unit that decrypts, using the unique information, the encrypted digital work having been read from the recording medium device, a write unit that writes the encrypted digital work into the recording medium device which is portable, and a read unit that reads the encrypted digital work from the recording medium device.

Abstract: A system includes of a main device and a recording medium device. The main device includes a reception unit that receives a digital work from an external distribution server, an internal storage area for storing the digital work, a playback unit that plays back the digital work, and a unique information storage area for storing information that is unique to the main device. The main device also includes an encryption unit that encrypts the digital work using the unique information, a decryption unit that decrypts, using the unique information, the encrypted digital work having been read from the recording medium device, a write unit that writes the encrypted digital work into the recording medium device which is portable, and a read unit that reads the encrypted digital work from the recording medium device.

Abstract: A contents processing device permitting, when contents are to be stored in a recording medium, only a specified device to read out the stored contents is to be provided, and a contents processing device capable, where it is a mobile telephone, of flexibly adapting to a change of a unique telephone number or a type of the mobile telephone. For the purpose, the contents processing device for inputting and outputting contents to and from a recording medium is provided with contents storage means (RAM) for storing contents, an ID storage unit (ROM) for storing an ID capable of identifying the contents processing device, a recording medium input/output unit (memory card I/F) for inputting to and outputting from the recording medium, and a ciphering unit (ciphering program) for enciphering contents within the contents storage unit by use of a ciphering key generated from the ID within the ID storage unit and storing it from the recording medium input/output unit into the recording medium.

Abstract: With content management apparatus 110 serving as a copy origin and storage medium 120 as a copy target, the copy origin retains allowed copy count control information on content, and when the content is copied from the copy origin to the copy target, the allowed copy count control information retained at the copy origin before copy processing is updated in accordance with a predetermined rule to generate allowed copy count control information to be retained at the copy origin and allowed copy count control information to be retained at the copy target, and subsequent copy processing at the copy origin is done based on the allowed copy count control information retained at the copy origin, whereas subsequent copy processing on the content stored in storage medium 120 is done based on the allowed copy count control information stored in storage medium 120. In this way, it is possible to achieve content management which is easily understandable for users.

Abstract: A recording apparatus is provided for an SD memory card that has a plurality of EPUBxxx.KEY files recorded thereon, each file having a plurality of Key&Rule Entry areas, and an SD_EPUB.MMG file being read from the recording medium prior to the writing of data. A bitmap in SD_EPUB.MMG shows for each EPUBxxx.KEY file whether the EPUBxxx.KEY file has at least one Key&Rule Entry area not in use, or whether all the Key&Rule Entry areas are in use. Based on the bitmap in the read SD_EPUB.MMG file, the recording apparatus opens EPUB#u.KEY having an unused Key&Rule Entry area and writes data into the unused Key&Rule Entry area in the file. If all the Key&Rule Entry areas in EPUB#u.KEY become in use as a result of the writing of the data, the recording apparatus updates the bitmap in SD_EPUB.MMG.

Abstract: There is provided a data processing device realizing a purchase after trial listening of a large-capacity content and enabling export of a content to a different content handling system, transfer of the content to a reproduction-dedicated terminal, and copying. A mobile communication terminal device (11) using the data processing device downloads right data for trial listening and content data before export from a server (12), accumulates the right data for trial listening in an accumulation unit (25) and temporarily accumulates the content data before export in a memory card (13), thereby enabling trial listening of the content data before export by the reproduction function.

Abstract: A system includes of a main device and a recording medium device. The main device includes a reception unit that receives a digital work from an external distribution server, an internal storage area for storing the digital work, a playback unit that plays back the digital work, and a unique information storage area for storing information that is unique to the main device. The main device also includes an encryption unit that encrypts the digital work using the unique information, a decryption unit that decrypts, using the unique information, the encrypted digital work having been read from the recording medium device, a write unit that writes the encrypted digital work into the recording medium device which is portable, and a read unit that reads the encrypted digital work from the recording medium device.

Abstract: With respect to encrypted content 104 stored in content storage medium 102, by storing information with a small data amount related to the encrypted content 104 in content storage medium 102 in association with the encrypted content 104, it is possible to distinguish between encrypted content 104 based on the related information without decoding the encrypted content 104 with a large data amount. It is thereby possible to more readily distinguish between a plurality of pieces of content stored in the content storage medium.

Abstract: A package management information recording section 131 creates and records on a recording medium 120 package management information for managing packages recorded on the recording medium 120. A content file recording section 132 records on the recording medium 120 content files of content file groups included in packages, and also creates and records on the recording medium 120 content file group management information for managing these content file groups. A content/metadata correspondence information recording section 133 creates and records on the recording medium 120 information on correspondence between content files and metadata files within a package or correspondence between a package itself and metadata files. By this means, the correspondence between content files and metadata files can always be maintained correctly when they are recorded separately.

Abstract: A package management information recording section 131 creates a directory for each package for content distributed in package units, and creates a package management file indicating the relationship between a directory name and package identifier. A content file recording section 132 creates a content file group management file indicating the relationship between a content file name and a reference name when that content is linked from other content. A link resolution information recording section 133 creates a link resolution file indicating the correspondence between a reference name indicating content included in another package and the package identifier of the other package. A link resolution section 142 of a content playback apparatus 140 specifies a link destination content file using these items of file management information. By this means, a link between contents can be maintained even when distributed content is recorded with a name different from the original content file name.

Abstract: When a portable terminal apparatus 11 which is a data processing apparatus downloads digital contents from a server 12, the portable terminal apparatus 11 acquires right data 52 which takes into consideration not only contents data 51 but also a first DRM system in this portable terminal apparatus 11 and a second DRM system in a memory card 13 which is the export destination. The portable terminal apparatus 11 handles the contents data 51 according to the right data 52 and converts, when the digital contents are exported to the memory card 13, the right data 52 so as to be adaptable to the second DRM system and outputs the contents data 51 and converted right data 52A.

Abstract: When a portable terminal apparatus 11 which is a data processing apparatus acquires right data 92 in addition to stored contents data 91, for example, to reacquire previously acquired right data, the portable terminal apparatus 11 accesses a distribution source server 12 based on distribution source information 93 and acquires right data corresponding to the contents data 91. Then, the portable terminal apparatus 11 converts the acquired right data so as to be adaptable to a second DRM system in a memory card 13, outputs the converted right data to the memory card 13 and updates the right data 92.

Abstract: A contents processing device permitting, when contents are to be stored in a recording medium, only a specified device to read out the stored contents is to be provided, and a contents processing device capable, where it is a mobile telephone, of flexibly adapting to a change of a unique telephone number or a type of the mobile telephone. For the purpose, the contents processing device for inputting and outputting contents to and from a recording medium is provided with contents storage means (RAM) for storing contents, an ID storage unit (ROM) for storing an ID capable of identifying the contents processing device, a recording medium input/output unit (memory card I/F) for inputting to and outputting from the recording medium, and a ciphering unit (ciphering program) for enciphering contents within the contents storage unit by use of a ciphering key generated from the ID within the ID storage unit and storing it from the recording medium input/output unit into the recording medium.

Abstract: The card writer (101) detects whether the sliding member (1) constituting the slide switch of the SD memory card is in the first position or the second position. The device driver (60) of the host computer (100) sets the memory area within the SD memory card to the writable state when the sliding member is in the first position. On the other hand, when the sliding member is in the second position, the device driver sets the memory area to the non-writable state except a part of the memory area. This part is the protected area (25) that is writable even when the protected area (25) is set to the non-writable state.

Abstract: The present invention makes it possible to perform a use time limit control by means of absolute time and date and relative time and date by retaining use date information and use time period information as use restriction information on content and by updating the use date information with a time and date calculated from current time and date 120 and use time period information. In addition, the invention prevents an unauthorized viewing of content, which may be done by willfully turning a terminal clock back, where such a prevention is achieved by limiting an approval for use of content only in a case where it is confirmed that current time and date is after reference time and date, found through a comparison of the current time and date with the reference time and date, where a terminal or storage medium 110 retains such reference time and date information that is subjected to updating at a specific timing.

Abstract: With content management apparatus 110 serving as a copy origin and storage medium 120 as a copy target, the copy origin retains allowed copy count control information on content, and when the content is copied from the copy origin to the copy target, the allowed copy count control information retained at the copy origin before copy processing is updated in accordance with a predetermined rule to generate allowed copy count control information to be retained at the copy origin and allowed copy count control information to be retained at the copy target, and subsequent copy processing at the copy origin is done based on the allowed copy count control information retained at the copy origin, whereas subsequent copy processing on the content stored in storage medium 120 is done based on the allowed copy count control information stored in storage medium 120. In this way, it is possible to achieve content management which is easily understandable for users.

Abstract: A content managing system capable of achieving the processing for assigning metadata related to the subject of multimedia content such as video and audio to the content with less effort. Non-text content managing section 110 transmits original metadata manually assigned to non-text based content to text-based content managing section 120. Similar text-based content retrieval section 125 in text-based content managing section 120 retrieves similar text-based content using the original metadata, and the metadata automatically extracted with respect to the similar text-based content is transmitted to non-text based content managing section 110 as additional metadata for the non-text based content.

Abstract: The present invention is directed to a content management system in which content data recorded on a memory card (1) is used by a content use terminal (2). The memory card (1) has recorded, in a protected area of which reading from outside is restricted, protected information including use restriction information indicative of conditions for using encrypted content data, and key information. The content use terminal (2) performs mutual authentication with the memory card (1). Furthermore, the content user terminal (2) reads the protected information from the protected area only when mutual authentication succeeds. Then, based on the use restriction information included in the read protected information, it is decided whether or not the content data recorded on the memory card (1) is usable. Also, the management server (3) transmits use restriction update information to the content use terminal (2) so as to update the use restriction information.

Abstract: In a document retrieving apparatus, an audio input section converts a sound into a character pattern. A language model storing section stores likelihood information. A word choosing section obtains a word selection result based on the likelihood information. A retrieval condition producing section produces retrieval conditions based on the word selection result. A document storing section stores document to be retrieved. And, a document retrieving section retrieves the documents based on the retrieval conditions. An effective document search can be performed regardless of the sentence recognition accuracy without requiring higher cost in collecting the required language data.

Abstract: A recording apparatus for an SD memory card that has a plurality of EPUBxxx.KEY files recorded thereon, each file having a plurality of Key&Rule Entry areas, and an SD_EPUB.MMG file being read from the recording medium prior to the writing of data. A bitmap in SD_EPUB.MMG shows for each EPUBxxx.KEY file whether the EPUBxxx.KEY file has at least one Key&Rule Entry area not in use, or whether all the Key&Rule Entry areas are in use. Based on the bitmap in the read SD_EPUB.MMG file, the recording apparatus opens EPUB#u.KEY having an unused Key&Rule Entry area and writes data into the unused Key&Rule Entry area in the file. If all the Key&Rule Entry areas in EPUB#u.KEY become in use as a result of the writing of the data, the recording apparatus updates the bitmap in SD_EPUB.MMG.