Abstract: A digital content editing apparatus that edits a content having license information defining a grant for a reusing operation or a multiple content including a plurality of the contents includes: a reuse license processor that obtains a constraint indicative of a condition on reuse between a content or the multiple content and a content other than the content or the multiple content from the license information of the content or the multiple content; an instruction generator that generates an operation execution instruction of reusing the content or the multiple content according to the constraint obtained by the reuse license processor; a reusing unit that reuses the content or the multiple content based on the operation execution instruction generated by the instruction generator; and an editor that edits the content or the multiple content reused by the reusing unit.

Abstract: An information processing terminal connectable to a WWW (World Wide Web) server via a public network includes a storage unit that stores content data including image information or sound information with identification information of the content data, an acquiring unit that acquires identification information of content data from the WWW server, a retrieving unit that retrieves content data corresponding to the identification information acquired by the acquiring unit from the storage unit, and a presenting unit that presents the content data retrieved by the retrieving unit.

Abstract: An information processing system in which information transfers between communication devices through a network is limited within a prescribed range by registering unique information obtainable within the prescribed range into each device and permitting information transfer between devices which share common unique information, where the unique information is formed by a pair of public and secret unique information, a bridge device is controlled such that, upon receiving a proxy check request from a reception device, whether a transmission device is another bridge device or not is judged when the public unique information registered by the reception device is registered in the bridge device and one public unique information registered in the bridge device is registered by the transmission device. Then, the secret unique information registered by the reception device is transmitted to the transmission device when the transmission device is not another bridge device.

Abstract: A contents player including: a reading unit which accesses data carrier and reads out contents including multimedia data and a script from the data carrier; a playing unit which plays the multimedia data included in the contents; an interpreting unit which interprets the script included in the contents; an access unit which accesses an internal or external storing device; an acquiring unit which acquires an access ID of the contents from the read contents or the data carrier when the script includes an access instruction description which instructs access to a specific storing region in the storing device: and a determining unit which determines whether the access to the specific storing region is permitted or not, on the basis of the acquired access ID.

Abstract: An apparatus for rendering a digital content having license information defining specifics of permission of a rendering operation includes a license processor that acquires, from the license information of the digital content, a constraint defining conditions for rendering between the digital content and other digital content; an operation execution command generator that generates an operation execution command for rendering the digital content according to the constraint acquired by the license processor; and a content renderer that renders the digital content based on the operation execution command generated by the operation execution command generator.

Abstract: A content reproduction apparatus (a) reads a specific server identifier, from a recording medium storing the specific server identifier and a content data item including a destination identifier, to store the specific server identifier in a table, (b) certifies a server corresponding to the specific server identifier, (c) certifies the recording medium by use of a data item in a storage area of the recording medium designated by the server being certified, (d) reproduces the content data item stored in the recording medium, (e) acquires the destination identifier while reproducing the content data item, (f) determines whether the destination identifier being acquired is equal to the specific identifier stored in the table, and (g) accesses to the server when the destination identifier being acquired is equal to the specific server identifier, and the server and the recording medium are certified.

Abstract: A content reproduction apparatus including reproduction unit configured to reproduce content data item stored in recording medium storing first server identifier and content data item including destination identifier, reads first server identifier from recording medium, to store first server identifier in table, certifies first server corresponding to first sever identifier, receives first server policy from first server being certified, first server policy including second server identifier redirecting to second server, to store second server identifier in table, certifies second server, acquires destination identifier while reproduction unit reproduces content data item, determines whether destination identifier being acquired is equal to first identifier stored in table, and accesses to second server, when at least destination identifier is equal to first identifier and second server is certified.

Abstract: An information-processing device includes a first interface configured to transmit content to a first communication unit through a network, a second interface configured to receive a first unique identification allocated to the first communication unit from a second communication unit and transmit a second unique identification allocated to the information-processing device to the second communication unit, an identification list configured to store at least one unique identification through the second interface and an identification judgment unit configured to determine whether the first unique identification received through the first interface is stored in the identification list, wherein when the identification judgment unit determines that the unique identification of the first communication unit is stored in the identification list, the first interface allows the content to be transmitted to the first communication unit.

Abstract: A content playback apparatus includes an SKF selecting unit that selects one segment key file from plural segment key files recorded in a DVD media at a time of playback of a content of the sequence key section, a data selecting unit that selects each content corresponding to a segment number of each key entry registered in the selected segment key file, a moving picture data decrypting unit that decrypts the selected moving picture data by a segment key corresponding to the segment number, and a decoder that plays back the decrypted moving picture data.

Abstract: An apparatus for rendering a digital content having license information defining specifics of permission of a rendering operation includes a license processor that acquires, from the license information of the digital content, a constraint defining conditions for rendering between the digital content and other digital content; an operation execution command generator that generates an operation execution command for rendering the digital content according to the constraint acquired by the license processor; and a content renderer that renders the digital content based on the operation execution command generated by the operation execution command generator.

Abstract: An aspect of the present invention provides an information communication device for transmitting electronic data encrypted for the purpose of copyright protection, the device includes that an identification information managing unit configured to hold device identification information in connection with other information communication devices acquired through a network, an ID registration processing unit configured to register the device identification information of another connection device when the other communication device satisfies a predetermined distance condition or when common identification information that is held by both information communication devices is received from a portable device, and an authentication and key exchange processing unit configured to, for the purpose of copyright protection, complete authentication and key exchange process (AKE process) only when another information communication device whose device identification information is registered in the identification information

Abstract: An apparatus for rendering a digital content having license information defining specifics of permission of a rendering operation includes a license processor that acquires, from the license information of the digital content, a constraint defining conditions for rendering between the digital content and other digital content; an operation execution command generator that generates an operation execution command for rendering the digital content according to the constraint acquired by the license processor; and a content renderer that renders the digital content based on the operation execution command generated by the operation execution command generator.

Abstract: There is provided an invention in which a buffer size and a data buffering size before a reproduction start can be determined according to a transfer rate of data and a network protocol used. In metadata of a moving image, a dynamic range of a data amount in a buffer is described, and the buffer size and the data buffering size before the reproduction start of the metadata are determined by this dynamic range.

Abstract: An information storage medium according to one embodiment of the present invention comprises a management area in which management information to manage content is recorded and a content area in which content managed on the basis of the management information is recorded. The content area includes an object area in which a plurality of objects are recorded, and a time map area in which a time map for reproducing these objects in a specified period on a timeline is recorded. The management area includes a play list area in which a play list for controlling the reproduction of a menu and a title each composed of the objects on the basis of the time map is recorded.

Abstract: A content playback apparatus includes an SKF selecting unit that selects one segment key file from plural segment key files recorded in a DVD media at a time of playback of a content of the sequence key section, a data selecting unit that selects each content corresponding to a segment number of each key entry registered in the selected segment key file, a moving picture data decrypting unit that decrypts the selected moving picture data by a segment key corresponding to the segment number, and a decoder that plays back the decrypted moving picture data.

Abstract: An information recording method for recording content information in a recording medium having at least re-readable area, comprising converting, based on a first conversion rule ?1, first information including a first component for obtaining content control information, converting, based on a second conversion rule ?2, second information including a second component for obtaining the first information, and writing the converted first information and the converted second information into the re-recordable area of the recording medium.

Abstract: A content recording apparatus includes a reading unit that reads, from a recording medium, a title key, a title content in plane text, an encrypted title content, an adjunct data, and a plain text adjunct data. The content recording apparatus further includes a playlist generating unit that generates a first playlist including the encrypted adjunct data and the plain text adjunct data, and generates a second playlist including only the plain text adjunct data. Each of the first playlist and the second playlist defines an order in which the title content as a playback target is to be played back. The content recording apparatus further includes a recording unit that records the first playlist and the second playlist onto the recording medium.

Abstract: According to one embodiment, since key information is written after a drive unit and host unit are assembled into a player, it is not necessary to manage, in the assembled player, the correspondence in secret key information between the drive unit and host unit. Further, in the player, even if, for example, the drive unit must be exchanged for another, encrypted key data can be shared simply by writing another key data item.

Abstract: A signal processing method multiplexes/arranges digital data of a specific unit to form a predetermined unit, adds an error correction code to the predetermined unit to constitute an error correction coded block, replaces a part of the error correction coded block with specific data, and outputs the error correction coded block with the specific data being replaced to a transmission medium or a recording medium.

Abstract: According to one embodiment, the invention protects a digital content from being illicitly copied. Resource information of content data which may be permitted to be copied, and acquisition destination information of a file that describes an Adapt RE permits to copy resources are stored in the optical disc. The Adapt RE file stores an acquisition destination of a Use RE file that permits secondary use of a copy. An apparatus has a unit configured to interpret the resource information, a unit configured to determine copying conditions by acquiring an Adapt RE file as a result of interpretation, a unit configured to execute copying based on the copying conditions, and a unit configured to acquire a Use RE based on the Adapt RE and to save the Use RE in association with the copy.