Abstract: A content reproduction device changing, according to a reproduction state of a stream media content, multimedia content to be presented after the reproduction of the stream media content has ended. The content reproduction device (100) including: a multimedia browser (102) displaying the multimedia content; a stream media reproducing unit (103) reproducing the stream media content; a reproduction state change instructing unit (104) receiving a user's instruction such as “fast-forward” during the reproduction of the stream media content, and notifying the stream media reproducing unit (103) of the instruction; a reproduction history storing unit (105) storing a reproduction history such as “fast-forward” carried out by the stream media reproducing unit (103); and a return position determining unit (106) determining a URL of a return position based on the reproduction history information stored in the reproduction history storing unit (105) and transition condition information.

Abstract: Time stamped streams respectively generated by an AV stream generating means and data stream generating means are combined by a time-stamped contents generating means. Consequently, a time-stamped contents stream is generated which synchronizes the processing of an AV stream and multimedia data.

Abstract: There are provided a content distribution system and a license management method for performing, in a collective manner, license management of a plurality of resources contained in contents. Each piece of content contains one upper-level resource (which is first referred to within the content), at least one lower-level resource (which can be referred directly or indirectly from the upper-level resource), one startup document and a license-corresponding document (which is an information file for performing, in a collective manner, license management of the resources contained in the content). The startup document contains at least upper-level resource reference destination information and at least one piece of license information for identifying view licenses required for viewing the resources contained in the content. In each resource, if link information for accessing other content is described, information for accessing the startup document of the other content is described.

Abstract: In a content delivery system including a server and content processing apparatus connected to each other across a network, a content delivered by the system is encrypted with a content key Kc, and supplied along with a sublicense encrypted with a work key Kw to a DTV. The sublicense includes a second use condition under which a content is used and a content key Kc for decrypting an encrypted content. The work key Kw for decrypting an encrypted content is included in a main license. The main license is supplied to the DTV separately from the content. The main license includes, in addition to the work key Kw, a first use condition under which a content under a subscription contract is used.

Abstract: A data broadcast program transport stream (TS) transmission device provided in a broadcast station, and for transmitting a data broadcast program TS based on a data broadcast program TS distributed over a network by another broadcast station. The data broadcast program TS transmission device stores a selection list that shows whether data broadcast program elements of the received data broadcast program are for inclusion in the data broadcast program TS of the broadcast station, and a replacement list that shows the replacement of data broadcast program elements for inclusion with local program elements produced in the broadcast station. A separation judgment unit separates TS packets from the received data broadcast program TS, refers to the selection list, and notifies the replacement execution unit of data broadcast program elements for inclusion.

Abstract: A data stream selection/output apparatus that selects and outputs a data stream composed of sequentially obtained data. The data stream selection/output apparatus obtains timing information indicating a time at which a first data stream being output should be switched to a second data stream. The data stream selection/output apparatus, in a time period including the time indicated by the timing information, scans the first and second data streams to detect a first boundary between data blocks of the first data stream and a second boundary between data blocks of the second data stream, where the data blocks conform to a transmission protocol higher than Transport Layer of OSI Reference Model. The data stream selection/output apparatus then stops outputting the first data stream at the first block boundary and starts outputting the second data stream at the second block boundary.

Abstract: A data transfer apparatus receives from an upper station a data stream that includes a plurality of types of repeat data, each type of repeat data being repeatedly transmitted by the upper station, and transfers the repeat data to a lower station, the data transfer apparatus including a storage unit having a storage area; an extraction unit for extracting the types of repeat data from the received data stream; a writing unit for writing the extracted repeat data to the storage area; a data structure ratio determination unit for determining a ratio between the types of repeat data to be output in a data stream per fixed length of time; and a data output unit for reading the repeat data stored in the storage unit, and outputting the read repeat data at the determined ratio.

Abstract: Time stamped streams respectively generated by an AV stream generating means and data stream generating means are combined by a time-stamped contents generating means. Consequently, a time-stamped contents stream is generated which synchronizes the processing of an AV stream and multimedia data.

Abstract: A broadcast system composed of a first broadcast apparatus and a second broadcast apparatus. The first broadcast apparatus broadcasts a broadcast program composed of contents stream data and attachment data, and provides the second broadcast apparatus with the broadcast program. The attachment data contains information that indicates timing with which the attachment data is to be reproduced in synchronization with the contents stream data. The image sync information contains PCRs generated by the PCR generating apparatus of the first broadcast apparatus based on the standard time for the first broadcast apparatus. The image sync information replacing apparatus of the second broadcast apparatus replaces the PCRs with other PCRs which are newly generated based on the standard time for the second broadcast apparatus so that it can correctly reproduce the attachment data in synchronization with the encoded contents stream data.

Abstract: A data transfer apparatus receives from an upper station a data stream that includes a plurality of types of repeat data, each type of repeat data being repeatedly transmitted by the upper station, and transfers the repeat data to a lower station, the data transfer apparatus including a storage unit having a storage area; an extraction unit for extracting the types of repeat data from the received data stream; a writing unit for writing the extracted repeat data to the storage area; a data structure ratio determination unit for determining a ratio between the types of repeat data to be output in a data stream per fixed length of time; and a data output unit for reading the repeat data stored in the storage unit, and outputting the read repeat data at the determined ratio.

Abstract: A content start control device that changes the resource to be started first within a content in accordance with the type of license purchased, and enables a plurality of viewing modes for one content is provided. The content start instruction reception unit 201 of the content start control device 100 receives a start instruction for a content, and sends the content ID of the content to the license information verification unit 211. The license information verification unit 211 obtains information on whether or not a license has been purchased, by using license information obtained from the license information storage unit 221 and the content ID obtained from the content start instruction reception unit 201. The start resource selection unit 212 selects the start resource of the content which is associated with the license, by using start resource information, and the resource starting unit 213 starts the resource selected by the start resource selection unit 212.

Abstract: A data transfer apparatus receives from an upper station a data stream that includes a plurality of types of repeat data, each type of repeat data being repeatedly transmitted by the upper station, and transfers the repeat data to a lower station, the data transfer apparatus including a storage unit having a storage area; an extraction unit for extracting the types of repeat data from the received data stream; a writing unit for writing the extracted repeat data to the storage area; a data structure ratio determination unit for determining a ratio between the types of repeat data to be output in a data stream per fixed length of time; and a data output unit for reading the repeat data stored in the storage unit, and outputting the read repeat data at the determined ratio.

Abstract: The present invention provides a content reproduction device which changes, according to a reproduction state of a stream media content, the multimedia content to be presented after the reproduction of the stream media content is ended, while the stream media content specified from the multimedia content is reproduced.

Abstract: The data replacement output apparatus 10 determines whether to perform a sequential output of replacement data based on a comparison between (i) the number of units of data constituting replacement object data received during a time period and (ii) the number of units of data constituting replacement data output during the time period. The determination is made each time replacement object data is received while the sequential output of data is not performed. If it determines to perform the sequential output, the data replacement output apparatus 10 outputs replacement data each time data constituting a data stream is received, and outputs non-replacement-object data each time data constituting non-replacement-object data is received while the sequential output is not performed; if it determines not to perform the sequential output, it outputs non-replacement-object data each time a unit of data constituting the data stream is received.

Abstract: There are provided a content distribution system and a license management method for performing, in a collective manner, license management of a plurality of resources contained in contents. Each piece of content contains one upper-level resource (which is first referred to within the content), at least one lower-level resource (which can be referred directly or indirectly from the upper-level resource), one startup document and a license-corresponding document (which is an information file for performing, in a collective manner, license management of the resources contained in the content). The startup document contains at least upper-level resource reference destination information and at least one piece of license information for identifying view licenses required for viewing the resources contained in the content. In each resource, if link information for accessing other content is described, information for accessing the startup document of the other content is described.

Abstract: In a content delivery system including a server and content processing apparatus connected to each other across a network, a content delivered by the system is encrypted with a content key Kc, and supplied along with a sublicense encrypted with a work key Kw to a DTV. The sublicense includes a second use condition under which a content is used and a content key Kc for decrypting an encrypted content. The work key Kw for decrypting an encrypted content is included in a main license. The main license is supplied to the DTV separately from the content. The main license includes, in addition to the work key Kw, a first use condition under which a content under a subscription contract is used.

Abstract: A receiving unit (101) of a print data generating apparatus (100), which enables a printing that reflects user's preferences even in a digital broadcasting environment, receives and modulates digital broadcast waves. A video/data separating unit (102) separates a signal received from the receiving unit (101) into a video packet, an audio packet and a data packet that includes print information. A print information storing unit (104) is a RAM for storing print information, or the like, and reads the print information from the data packet received from the video/data separating unit (102), and stores it.

Abstract: A digital broadcasting system includes an authoring apparatus and a transmission apparatus. The authoring apparatus generates event information, which defines an event message that should be transmitted immediately after an operator's instruction to transmit the event message is received, and adds the event information to a content. The authoring apparatus then extracts the event information from the content by referring to tag information and transfers the extracted event information to the transmission apparatus. The transmission apparatus stores the event message defined by the event information transferred from the authoring apparatus. According to an operator's instruction to transmit the event message, the transmission apparatus issues the event message, and multiplexes and transmits the issued event message and the content.

Abstract: A data broadcast content generation system stores body data for displaying a body page, a plurality of sets of part data each being composed of display element data for determining a display element and attached data for displaying an attached page, and schedule information which associates each broadcast data slot with a set of part data. For each broadcast time slot, the body data, display element data of the set of part data, and attached data of the set of part data are related to each other, so that a display element determined by the display element data will be displayed in the body page and a link destination of the display element will be an attached page displayed using the attached data. The body data, the display element data, and the attached data are then set as carousel data to be transmitted during the broadcast time slot.

Abstract: A broadcast system composed of a first broadcast apparatus and a second broadcast apparatus. The first broadcast apparatus broadcasts a broadcast program composed of contents stream data and attachment data, and provides the second broadcast apparatus with the broadcast program. The attachment data contains information that indicates timing with which the attachment data is to be reproduced in synchronization with the contents stream data. The image sync information contains PCRs generated by the PCR generating apparatus of the first broadcast apparatus based on the standard time for the first broadcast apparatus. The image sync information replacing apparatus of the second broadcast apparatus replaces the PCRs with other PCRs which are newly generated based on the standard time for the second broadcast apparatus so that it can correctly reproduce the attachment data in synchronization with the encoded contents stream data.