WO2006093197A1 - 配信装置および受信装置 - Google Patents
配信装置および受信装置 Download PDFInfo
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- WO2006093197A1 WO2006093197A1 PCT/JP2006/303893 JP2006303893W WO2006093197A1 WO 2006093197 A1 WO2006093197 A1 WO 2006093197A1 JP 2006303893 W JP2006303893 W JP 2006303893W WO 2006093197 A1 WO2006093197 A1 WO 2006093197A1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
- H04N7/17309—Transmission or handling of upstream communications
- H04N7/17318—Direct or substantially direct transmission and handling of requests
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4331—Caching operations, e.g. of an advertisement for later insertion during playback
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/4722—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting additional data associated with the content
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/84—Generation or processing of descriptive data, e.g. content descriptors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/8543—Content authoring using a description language, e.g. Multimedia and Hypermedia information coding Expert Group [MHEG], eXtensible Markup Language [XML]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/8549—Creating video summaries, e.g. movie trailer
Definitions
- the present invention relates to a distribution apparatus and a reception apparatus for distributing a preview of content.
- Patent Document 1 displays a part of a program video corresponding to this data by adding data indicating the part of the program video to metadata related to the program and transmitting it to the receiving terminal.
- a technique for making a preview is disclosed.
- Patent Document 2 discloses a technique for adding information related to another content to metadata corresponding to a certain content.
- preview distribution is realized by adding information related to the main part of the program content (for example, the reception method of the main thread and the content main part) to the metadata corresponding to the preview of the program.
- a preview showing the outline of the program content is distributed to the user, and the user can grasp the outline of the program content by referring to the preview.
- the user can grasp the desired program content, so that, for example, useless expenses can be suppressed for paid program content.
- Patent Document 1 Publication of WO00Z45593
- Patent Document 2 JP 2004-282634 A
- the present invention has been made in view of such a point, and a distribution device, a reception device, and a distribution device capable of realizing flexible preview distribution between the distribution side and the user side, and It is an object to provide a distribution system, and a distribution method, a reception method, and a transmission / reception method in these.
- the distribution apparatus of the present invention transmits a preview metadata management unit that manages preview metadata describing reference destination information describing preview configuration data that constitutes content preview data, and the preview metadata. And a transmission unit.
- the receiving device of the present invention includes a receiving unit that receives preview metadata describing reference destination information to preview configuration data that constitutes preview data of content, and the above-described description described in the preview metadata
- a configuration is provided that includes a preview configuration data acquisition unit that acquires the preview configuration data using reference destination information, and a preview generation unit that generates the preview data based on the preview configuration data.
- the distribution system is a distribution system having a distribution device and a reception device, and the distribution device describes preview metadata describing reference destination information to preview configuration data constituting content preview data.
- a preview metadata management unit for managing the preview metadata, and a transmission unit for transmitting the preview metadata, wherein the reception device receives the preview metadata transmitted by the distribution device, and the preview Using the reference destination information described in the metadata, the preview configuration data
- a preview configuration data acquisition unit for acquiring data and a preview generation unit for generating the preview based on the preview configuration data are employed.
- the distribution method of the present invention includes a step of transmitting preview metadata describing reference destination information to preview configuration data that constitutes content preview data.
- the reception method of the present invention includes a step of receiving preview metadata describing reference destination information to preview configuration data constituting content preview data, and the reference described in the preview metadata A step of acquiring the preview configuration data using the prior information; and a step of generating the preview data based on the preview configuration data.
- the distribution device transmits preview metadata describing reference destination information to the preview configuration data constituting the content preview data
- the reception device includes the distribution Receiving the preview metadata transmitted from a device; receiving the preview configuration data using the reference destination information described in the preview metadata; and the receiving device; Generating the preview data based on the preview configuration data.
- the receiving terminal can acquire only the data constituting the preview of the changed portion and can play back the changed preview. A reliable preview distribution can be performed.
- FIG. 1 is a diagram showing a configuration of a content distribution system including a distribution system according to an embodiment of the present invention.
- FIG. 2 is a diagram showing an overview of preview metadata in the present embodiment
- FIG. 3 is a diagram showing an example of a schema of preview metadata in the present embodiment
- FIG. 4 A diagram showing an example of a schema of preview metadata in the present embodiment following FIG.
- FIG. 5 A diagram showing a description example of preview metadata in the present embodiment.
- FIG. 6 A diagram showing a description example of service description in the present embodiment.
- FIG. 7 is a diagram showing an EPG in the present embodiment
- FIG. 8 is a sequence diagram showing preview distribution operation of the content distribution system in the present embodiment.
- FIG. 9 is a sequence diagram showing preview distribution operation of the content distribution system in the present embodiment following FIG.
- preview data is used as data for the entire preview
- preview configuration data is used for data constituting the data for the entire preview
- preview meta data is used as reference data for the preview configuration data.
- Preview data is multi-media data called “Preview composition data” such as video, audio, still image, text, etc., and is composed of any force or combination of various materials. Realize multimedia preview.
- a content distribution system 100 includes a content server 101 that distributes content such as a program, a metadata server 102 that distributes metadata that is data related to the content, etc., and a content
- a preview configuration data server 103 that distributes a preview related to the content, metadata, and a receiving terminal 104 that receives preview data is connected via a broadcast network 105 and a communication network 106.
- the content distribution system 100 is a form in which the broadcast network 105 and the communication network 106 are mixed, but only the broadcast network 105 or only the communication network 106 may be used.
- a power broadcasting network 105 may be used in which the communication network 106 is provided between the content server 101 and the metadata server 102.
- a power broadcasting network 105 in which the communication network 106 is provided between the content server 101 and the preview configuration data server 103 may be used.
- the 1S broadcasting network 105 may be used in which the communication network 106 is provided between the preview configuration data server 103 and the receiving terminal 104.
- the metadata broadcast from the metadata server 102 to the receiving terminal 104 is generally called a service guide.
- the content server 101 is provided with a content storage unit 107 for storing a plurality of contents for transmission.
- the content storage unit 107 is composed of a large-capacity storage medium.
- the content server 101 is provided with a content management unit 108 that manages the content stored in the content storage unit 107.
- the content management unit 108 manages the identification information that selects the content to be distributed, determines the distribution destination of the content, and identifies the metadata corresponding to the content. Also, the content management unit 108 sends metadata identification information corresponding to the distributed content to the transmission unit 109.
- the content server 101 distributes content to the receiving terminal 104 via the broadcast network 105, transmits information for identifying metadata for the content to the metadata server 102 via the communication network 106, and communicates content.
- a transmission unit 109 that distributes to the preview configuration data server 103 via the network 106 is provided.
- the transmission unit 109 has a communication function using the broadcasting network 105 and a communication function using the communication network 106.
- the metadata server 102 handles, for example, service description, purchase information, and preview metadata as content metadata.
- the service description is information about the content, such as a description of the content title, performer, time, genre, access information (eg, channel number, IP address, port number) for the content, or the service description of these. Is information including the reference destination information of the data constituting the.
- the purchase information is information on how to purchase the content, or information including reference information of these pieces of information.
- the preview metadata is information relating to the preview of the content, and is information (details will be described later) including reference destination information of the preview configuration data.
- the metadata handled by the metadata server 102 is not limited to these. It may be anything related to content.
- a service description storage unit 112 that stores service descriptions
- a purchase information storage unit 113 that stores purchase information
- a preview metadata that stores preview metadata.
- a data storage unit 114 is provided.
- the service description stored in the service description storage unit 112 and the purchase information stored in the purchase information storage unit 113 may be provided from the content server 101 or provided by another external device not shown. It can be provided by user input!
- the metadata server 102 is provided with a reception unit 110 and a transmission unit 111 as communication means using the communication network 106.
- the metadata server 102 has a communication function using broadcasting in the case where it is connected to other devices using the broadcasting network 105.
- distributed in the present specification is a concept including both the case of using communication and the case of using broadcast.
- the receiving unit 110 receives information identifying the metadata corresponding to the content sent from the content server 101 and sends it to the metadata managing unit 115.
- the reception unit 110 receives preview metadata (details will be described later) sent from the preview configuration data server 103 and stores the preview metadata in the preview metadata storage unit 114.
- the preview metadata stored in the preview metadata storage unit 114 includes service descriptions and purchase information that can be related by information included in the preview metadata (for example, reference information of preview configuration data). It is associated. For example, when preview metadata related to preview data of specific content is stored in the preview metadata storage unit 114 and purchase information of the specific content is stored in the purchase information storage unit 113, the preview metadata is stored. Data and purchase information are associated with each other (link setting). That is, the preview metadata storage unit 114 has a function of managing the correspondence relationship between preview metadata and other information.
- the metadata management unit 115 manages preview metadata in which predetermined information is described for each type of video, audio, still image, text, and the like. Further, the metadata management unit 115 analyzes the information for identifying the metadata received by the reception unit 110, that is, the information for identifying the metadata corresponding to the content distributed by the content server 101, and distributes the content. The metadata (service description, purchase information, preview metadata) corresponding to is extracted and sent to the transmission unit 111.
- the metadata management unit 115 performs preview metadata corresponding to content to be distributed from various types of information stored in the service description storage unit 112, the purchase information storage unit 113, and the preview metadata storage unit 114. And metadata consisting of service description and purchase information. Then, the metadata management unit 115 temporarily stores the generated metadata as metadata to be transmitted to the receiving terminal 104.
- the metadata management unit 115 receives, as a receiving terminal, metadata including preview metadata corresponding to content to be distributed and service description and purchase information that are additional information of the preview metadata. Prepare as metadata to be sent to 104.
- what kind of additional information is included in the preview metadata should be determined flexibly according to settings made between the transmission side and the reception side, the reception environment of the reception side, user requests, and the like. Can do.
- the transmission unit 111 transmits metadata (service description, purchase information, preview metadata) to the reception terminal 104 under the management of the metadata management unit 115. At that time, as described above, it is not always necessary to send all information of the service description, purchase information, and preview metadata as the metadata. For example, it is possible to transmit metadata consisting of preview metadata and service descriptions.
- the metadata server 102 is configured.
- the preview configuration data server 103 is provided with a reception unit 116 and a transmission unit 117 as communication means using the communication network 106. Note that when the preview configuration data server 103 is connected to other devices using the broadcast network 105, it has a communication function using broadcast.
- the receiving unit 116 receives the content sent from the content server 101 and sends it to the preview generation unit 118.
- Preview generation unit 118 generates preview data using the received content. Specifically, the preview composition data indicating the summary of the content is generated as a video preview, audio preview, still image preview, text preview, and arrangement information of these preview composition data. The preview generation unit 118 generates the generated video preview in the video preview storage unit 119, the generated audio preview in the audio preview storage unit 120, and the generated still image preview in the still image preview storage unit 121. The text preview is sent to the text preview storage unit 122.
- the preview generation unit 118 displays the generated video preview, audio preview, still image preview, text preview information, and temporal and spatial arrangement information of these preview configuration data as preview metadata.
- the data is sent to the generation unit 123. If the received content includes identification information of metadata (service description, purchase information) regarding the content, the preview generation unit 118 also sends this identification information to the preview metadata generation unit 123.
- the moving image preview storage unit 119 stores the moving image preview from the preview generation unit 118.
- the audio preview storage unit 120 stores the audio preview from the preview generation unit 118.
- Still image preview storage unit 121 stores a still image preview from preview generation unit 118, and text preview storage unit 122 stores a text preview from preview generation unit 118.
- the preview metadata generation unit 123 includes information on the video preview, audio preview, still image preview, and text preview sent from the preview generation unit 118, and temporal and spatial arrangement information of these preview configuration data Power Generate preview metadata. Then, the preview metadata generation unit 123 sends the generated preview metadata to the metadata server 102 via the transmission unit 117.
- Preview metadata includes video preview, audio preview, still image preview, text Describes reference destination information and arrangement information of the text preview. Details of the preview metadata will be described later.
- the preview configuration data server 103 is provided with a preview management unit 124.
- the preview management unit 124 receives a video preview, audio preview, still image preview, and text preview distribution request sent from the receiving terminal 104 via the reception unit 116, and receives a video preview and audio corresponding to the distribution request.
- the preview, the still image preview, and the text preview are extracted from the moving image preview storage unit 119, the audio preview storage unit 120, the still image preview storage unit 121, and the text preview storage unit 122. Then, the preview management unit 124 sends the extracted data to the reception terminal 104 via the transmission unit 117.
- preview configuration data server 103 is configured.
- preview configuration data server 103 may be configured such that power preview configuration data server 103 described in the form of receiving content and generating preview data receives preview data. In this case, the preview generation unit 118 is unnecessary.
- the receiving terminal 104 is provided with a receiving unit 125 and a transmitting unit 126 as communication means having functions using the broadcast network 105 and the communication network 106.
- the receiving terminal 104 has only a communication function using the broadcasting network 105 when connected to other devices using the broadcasting network 105, and is connected when using the communication network 106. Only communication function using communication network 106 is available.
- the receiving terminal 104 is provided with a metadata analyzing unit 127 that acquires metadata (service description, purchase information, preview metadata) sent from the metadata server 102 via the receiving unit 125. ing.
- the metadata analysis unit 127 analyzes the metadata, obtains information about the content included in the metadata, for example, information about the preview, content title, channel, performer, purchase information, etc. Program Guide) is sent to the generation unit 128.
- the EPG generation unit 128 generates EPG based on the information sent from the metadata analysis unit 127. And send it to the display unit 129.
- EPG channel information is arranged on the horizontal axis, and information about the contents (preview, etc.) is arranged at the intersection, which is rectangular from the time on the vertical axis. Details of EPG will be described later.
- Display unit 129 displays EPG sent from EPG generation unit 128, preview data sent from preview generation unit 132, which will be described later, and content such as content sent from content processing unit 133. indicate.
- the receiving terminal 104 is provided with an input unit 130 for the user to make various inputs related to processing such as content download and preview data distribution.
- the reception terminal 104 is provided with a preview configuration data acquisition unit 131.
- the preview configuration data acquisition unit 131 acquires preview configuration data using the reference destination information of the preview configuration data described in the preview metadata sent from the metadata server 102 via the receiving unit 125. Specifically, the preview configuration data acquisition unit 131 acquires the preview configuration data transmitted from the preview configuration data server 103 that has received the preview distribution request from the receiving terminal 104 via the reception unit 125.
- the reception terminal 104 is provided with a preview generation unit 132.
- the preview generation unit 132 generates preview data selected by the user viewing the EPG using the input unit 130. Specifically, first, the preview generation unit 132 analyzes the preview metadata for the preview data selected by the user, and the video preview, audio preview, still image preview, text, which are the preview configuration data constituting the preview data. Recognize the preview. Then, the preview generation unit 132 sends a distribution request for a video preview, audio preview, still image preview, and text preview constituting the preview data to the preview configuration data server 103 via the transmission unit 126.
- the preview generation unit 132 generates a preview based on the preview configuration data sent from the preview configuration data server 103 in response to the preview configuration data distribution request acquired by the preview configuration data acquisition unit 131. To do.
- the preview data is generated by combining the video preview, audio preview, still image preview, and text preview sent from the preview configuration data server 103 with the position described in the preview metadata. This is done by arranging based on the arrangement information and the arrangement information in time.
- the preview generation unit 132 sends the generated preview data to the display unit 129.
- preview configuration data acquisition unit 131 and the preview generation unit 132 may have an integrated configuration.
- a preview distribution request generation unit (not shown) that automatically generates a distribution request for preview configuration data may be provided according to the reception capability or reception environment of the reception terminal 104.
- the receiving terminal 104 is provided with a content processing unit 133.
- the content processing unit 133 converts the content received via the receiving unit 125 into a form that can be displayed by the display unit 129, and sends the content to the display unit 129.
- the receiving terminal 104 is configured.
- the still image preview and text preview may be received and stored. This is a preferred form when a video preview, audio preview, still image preview, or text preview is transmitted unilaterally in broadcasting or the like. In this case, it is preferable to store data used for preview, service description, and purchase information in association with each content.
- preview metadata generated by the preview metadata generation unit 123 will be described. First, an overview of preview metadata will be described with reference to FIG.
- the preview metadata 200 describes a preview metadata identification number 201.
- expiration date information 204 is described.
- a start time 202 that is a time when the use can be started and an end time 203 that indicates the expiration date of use are described.
- the preview metadata 200 includes temporal (temporal and spatial) of video (preview configuration data), audio (preview configuration data), still images (preview configuration data), and text (preview configuration data).
- Arrangement information 205 indicating the arrangement is described.
- Placement information 205 Is described in the international standard SMIL (Synchronized Multimedia Integration Language). With this arrangement information 205, the configuration of data used for the preview can be made complex and powerful. In addition, since the arrangement information 205 is described in the international standard, it has versatility.
- Video information 206 includes video reference information 207, codec 208, which is a video compression method, and alternative text 209 and alternative still image 210 that are played instead of the video when the video cannot be played back. .
- the reference destination information 207 is a storage destination of the moving image preview, in this case, a reference destination address such as a URI related to the moving image preview storage unit 119 of the preview configuration data server 103.
- the video information 206 changes the reference destination information 207 when only the video preview is changed by describing the reference destination information 207 of the data constituting the video preview in the actual video preview.
- only the video preview stored in the link destination of the reference destination information 207 needs to be changed. This greatly reduces the amount of data compared to the conventional method of transmitting other data that is not changed when only the video preview is changed. Therefore, the communication network is prevented from being compressed and the communication efficiency is improved. Since the video preview is stored in the reference destination, the video preview can be shared with other content previews. As a result, the storage area for the video preview is also reduced.
- preview data using the text and still image can be generated, and the outline of the content can be grasped by using this preview data. be able to.
- preview distribution suitable for the function of the receiving terminal 104 that is, flexible preview distribution can be performed.
- the alternative text 209 and the alternative still image 210 may describe the text preview and the still picture preview, and the storage location of the still image preview and the text preview, in this case, the preview configuration data server 103.
- Reference destination addresses such as URIs of the still image preview storage unit 121 and the text preview storage unit 122 may be described.
- audio information 211 regarding audio (preview) is described.
- the audio information 211 includes audio reference information 212, a codec 213 that is an audio compression method, and an alternative text 214 and an alternative still image 215 that are played instead of audio when the audio cannot be played back.
- the audio information 211 includes audio reference information 212, a codec 213 that is an audio compression method, and an alternative text 214 and an alternative still image 215 that are played instead of
- Reference destination information 212 is a storage destination of an audio preview, in this case, a reference destination address such as a URI related to the audio preview storage unit 120 of the preview configuration data server 103.
- the audio information 211 changes the reference destination information 212 when only the audio preview is changed by describing the reference destination information 212 of the data constituting the audio preview in the audio preview entity.
- only the audio preview stored in the link destination of the reference destination information 212 needs to be changed. This greatly reduces the amount of data compared to the conventional method of transmitting other data that is not changed when only the audio preview is changed. Therefore, the communication network is prevented from being compressed and the communication efficiency is improved. Since the audio preview is stored in the reference destination, the audio preview can be shared with other content previews. As a result, the audio preview storage area can be reduced.
- the alternative text 209 and the alternative still image 210 can generate preview data using the text and the still image, and this preview data power also grasps the outline of the content. be able to.
- preview distribution according to the function of the receiving terminal 104 that is, flexible preview distribution can be performed.
- the alternative text 214 and the alternative still image 215 may describe the entity of the text preview and the still image preview, and the storage location of the still image preview and the text preview, in this case, the preview configuration data server 103 Describe reference addresses such as URIs of still image preview storage unit 121 and text preview storage unit 122.
- the preview metadata 200 describes still image information 216 related to a still image preview or an alternative still image.
- Still image information 216 includes reference information 217 of still image, codec 218 for converting the still image into a displayable form, V which cannot display the still image, and alternative text to be displayed instead of the still image in the case 219.
- the reference destination information 217 is a storage destination of the still image preview or the alternative still image, in this case, a reference destination address such as a URI related to the still image preview storage unit 121 of the preview configuration data server 103.
- the still image information 216 is not an entity of the still image preview or the alternative still image, but describes the reference destination information 217 of the data constituting the still image preview or the alternative still image.
- the reference destination information 217 may be changed, or only the still image preview stored in the link destination of the reference destination information 217 may be changed. This greatly reduces the amount of data compared to the conventional method of transmitting other data that is not changed when only the still image preview is changed. Therefore, communication network pressure is prevented and communication efficiency is improved.
- the still image preview or the alternative still image is stored in the reference destination, the still image preview or the alternative still image can be shared with a preview of another content. As a result, the storage area for the still image preview or alternative still image is also reduced.
- preview data using text can be generated, and this preview data power can also grasp the outline of the content.
- preview distribution according to the function of the receiving terminal 104 that is, flexible preview distribution can be performed.
- the alternative text 219 may describe a text preview entity, or a text preview storage destination, in this case, a reference destination address such as a URI related to the text preview storage unit 122 of the preview configuration data server 103. You can describe it.
- text information 220 relating to a text preview or alternative text is described.
- the text information 220 may be the text itself V, and may be a reference address such as a URI related to the text preview storage unit 122 of the preview configuration data server 103! /.
- the access object 221 that is information of related metadata is described.
- the access object 221 includes related service description, purchase information identification information, reference destination information to related metadata, and the like.
- the service description, purchase information, and other related items can be obtained with just preview metadata 200.
- the metadata also includes related metadata information.
- preview metadata can also be referred to from service descriptions, purchase information, and other related metadata. This enables a service that combines a large amount of metadata such as service descriptions and purchase information.
- the preview metadata 200 it is possible to configure preview data that is a complex composite of video preview configuration data, audio preview configuration data, still image preview configuration data, and text preview configuration data. Can do. Also, the preview metadata 200 describes reference destination information of these preview composition data, which is composed of a moving image preview, an audio preview, a still image preview, and a text preview. Thus, when changing any one of the video preview, audio preview, still image preview, and text preview, only the changed video preview, audio preview, still image preview, and text preview need to be distributed. As a result, the amount of data to be distributed can be overwhelmingly reduced as compared with the conventional method of distributing all preview data.
- FIG. 3 The preview metadata schema 300 is described in XML (eXtens3 ⁇ 4le Markup Language), which is an international standard. This makes schema 300 general purpose.
- XML eXtens3 ⁇ 4le Markup Language
- previewDatalD which is an identification number of preview metadata
- version which is the version information of the preview metadata
- reference numeral 331 in the figure.
- Value is the version information of the preview metadata
- SMIL arrangement information of preview metadata
- the preview metadata schema 300 as shown by 304 in the figure, “Video” which is the video information of the preview metadata as an element, and as shown by 305 in the figure, the audio of the preview metadata as an element.
- Information “Audio” is still image information of preview metadata as an element as shown by 306 in the figure.
- Picture is text information of preview metadata as an element as shown by 307 in the figure.
- Text force is defined respectively.
- the schema 300 defines “AccessObject” as access destination information when the preview is a low-rate video stream or the like, as indicated by reference numeral 308 in the figure.
- an element “Valid Time” has child elements “StartTime” 310 and “EndTime” 311 as start times. Is defined. Further, the schema 300 is defined as having “autoStart” as an element “StartTime” 310 force attribute as indicated by 312 in the figure.
- “autoStart” when the attribute “auto Start” has a value of “true”, playback of the preview automatically starts at the time specified by “StartTime”.
- the element “StartTime” 310 simply represents the start time of the expiration date of the preview.
- schema 300 defines element “SMIL” as indicated by reference numeral 313 in the figure. Note that the element “SMIL” is based on the international standard, and a detailed description thereof will be omitted.
- the schema 300 has an element “Video” as a child element, “VideoURI” 315 indicating reference destination information, and “Codec” 316 indicating a compression method. It can be defined as having an “AlternativeText” 317 that indicates text and an “AlternativePicture” 318 that is an alternative still image. "AlternativeText” 317 and “AlternativePicture” 318 are defined by “TextType” and "PictureType" described later.
- the schema 300 has an element “Audio” as a child element, “AudioURI” 320 indicating reference destination information, and “Codec” 321 indicating a compression method. It is defined as having “AlternativeText” 322 indicating text and “AlternativePicture” 323 which is an alternative still image. "AlternativeText” 322 and “AlternativePicture” 323 are defined by “TextType” and "PictureType" described later.
- the schema 300 includes elements “Picture” and “Alternativ ePicture” as child elements “PictureURI” 325 indicating reference destination information and “Codec” indicating a compression method. 326 and “AlternativeText” 327 indicating alternative text. “AlternativeText” 327 is defined by “TextType” described later.
- the schema 300 includes elements “Text” and “AlternativeT ext” as child elements “lang” 330 indicating a language, “font” 332 indicating a font, Define it to have "color” 333 indicating the color and "size” 334 indicating the size of the character!
- schema 300 defines element “AccessObject” as indicated by reference numeral 335 in the figure.
- the element “AccessObject” can specify service description, purchase information identification information, reference information to related metadata, and the like.
- the access destination information when the preview is a program composed of a low-rate video stream is shown.
- the preview metadata 500 shown in FIG. 5 is a description based on the schema 300 shown in FIGS.
- preview metadata 500 shown in FIG. 5 “1234” is described as element “Preview DatalD” as indicated by reference numeral 501 in the figure. Also, preview metadata 500 contains As indicated by 502 in the figure, “1.0” is described as the element “Version”.
- element “ValidTime” is described as indicated by reference numeral 503 in the figure.
- child element “StartTime” is indicated as "200501300000”.
- 505 “200502300000” forces are described as child elements “EndTime”.
- the element "SMIL" is described in the preview metadata 500 as shown in 506 in the figure.
- 507 shows the configuration power when the bit rate of the communication network is "2000". Each configuration is described when the bit rate of the communication network is "16000”.
- the preview metadata 500 describes the element "Video” as indicated by 509 in the figure, and “esg: video00” as the child element “URI” as indicated by 510 in the figure.
- “01” is a child element "Codec” as shown in 511 in the figure
- “mpegl” is a child element as shown in 512 in the figure
- “AlternativeText” is a child element as shown in 513 in the figure
- “Alternative Picture” is described!
- "AlternativeText” 512 describes "XXX Cartoon Movie” as shown in 517 in the figure, and "eng” as attribute "lang” as shown in 515 in the figure. As shown, “blue” is described as the attribute “color”.
- the preview metadata 500 describes the reference destination information of these pieces of information, not the video, audio, still image, and text entities that constitute the preview data. It is.
- the preview metadata 500 also defines alternative data when a video cannot be played.
- the preview metadata 500 also describes the arrangement of moving images, audio, still images, and text that constitute the preview data.
- the service description 600 shown in Fig. 6 as shown by 601 in the figure, text representing the name of the content is described.
- the service description 600 describes the language for performing the service, as indicated by 602 in the figure.
- access destination information for receiving and referring to a service is described by a URI.
- the receiving terminal 104 receives a file describing information such as the IP address and port of the access destination by broadcasting in the same way as the service description, and the file is received inside the receiving terminal 104 by the URI described in 603. Can be referred to.
- the ID of the related preview metadata is described.
- the service description 600 also describes identification information of preview metadata, which is related metadata that includes not only information related to content.
- the EPG is a rectangular table with channels on the horizontal axis and time on the vertical axis.
- information about the content broadcast on the corresponding channel and time is described.
- content information information that can be extracted from the service description as indicated by 700 in the figure, information that can also acquire purchase information power as indicated by 701 in the figure, and 702 in the figure. As shown, information that can also extract preview metadata power is described.
- a channel specialized in preview as shown by 703 in the figure may be provided.
- this preview-specific channel in the preview metadata access object it is possible to obtain preview data that has been generated in advance, without having to generate preview data by acquiring preview metadata and video and audio. can do.
- the EPG is configured as described above.
- the content management unit 108 of the content server 101 extracts content from the content storage unit 107.
- the extracted content is transmitted via the transmission unit 109 to the receiving terminal 104 using the broadcast network 105 and to the preview configuration data server 103 using the communication network 106 (ST801, ST802).
- the content management unit 108 uses the communication network 106 to transmit information for identifying metadata (service description and purchase information) related to the content transmitted to the ST801 via the communication unit 106.
- the data is sent to the data server 102 (ST803).
- preview configuration data server 103 receives the content at reception unit 116 and sends the content to preview generation unit 118. Then, the preview generation unit 118 generates preview data from the content using a predetermined method (ST804), and displays the video preview, audio preview, still image preview, and text preview, which are preview configuration data constituting the preview data.
- the video preview storage unit 119, the audio preview storage unit 120, the still image preview storage unit 121, and the text preview storage unit 122 are stored (ST805).
- the preview generation unit 118 also refers to information on video preview, audio preview, still image preview, text preview reference information, temporal and spatial arrangement information of these preview configuration data, and information on other corresponding metadata.
- the preview composition data server 103 sends the generated video preview, audio preview, still image preview, and text preview to the receiving terminal 104 unilaterally via a broadcast network or the like. May be. In this case, the receiving terminal 104 receives and accumulates the received video preview, audio preview, still image preview, and text preview.
- the preview metadata generation unit 123 receives the received video preview, audio preview, still image preview, text preview reference information, temporal and spatial arrangement information of these previews, correspondence
- preview metadata 500 as shown in FIG. 5 is generated using information on other metadata to be used, expiration date, version information, and the like (ST806).
- preview metadata generation unit 123 sends the generated preview metadata to metadata server 102 via transmission unit 117 and communication network 106 (ST807).
- the metadata server 102 receives preview metadata at the receiving unit 110 and sends the preview metadata to the metadata management unit 115.
- the metadata management unit 115 stores the received preview metadata in the preview metadata storage unit 114.
- the metadata server 102 proceeds to a process of sending metadata to the receiving terminal 104 at a predetermined timing.
- the metadata management unit 115 of the metadata server 102 stores the service description, purchase information, and preview metadata corresponding to the information for identifying the metadata sent in ST8 03 into the service description storage unit 112, the purchase information, respectively. Extraction is performed from the storage unit 113 and the preview metadata storage unit 114 (ST808). Then, the extracted metadata (service description, purchase information, preview metadata) is transmitted to the receiving terminal 104 via the transmission unit 111 power communication network 106 (ST809 to ST811).
- the receiving terminal 104 receives the service description, purchase information, and preview metadata at the receiving unit 125 and sends them to the metadata analyzing unit 127 and the preview generating unit 131.
- the metadata analysis unit 127 analyzes the service description, purchase information, and preview metadata, extracts information included in the service description, purchase information, and preview metadata, and sends the information to the EPG generation unit 128 ( ST812).
- the metadata analysis unit 127 extracts the content title, service content, and the like from the service description, and extracts the charging fee and transfer method from the purchase information.
- the EPG generation unit 128 generates the EPG shown in FIG. 7 based on the information sent from the metadata analysis unit 127 and sends it to the display unit 129.
- the display unit 129 generates the EPG. indicate (ST813).
- the preview generation unit 132 analyzes the preview metadata for the selected preview data ( ST815), extract the video preview, audio preview, still image preview, text preview, etc. necessary for generating preview data, and send these distribution requests to the preview configuration data via the transmission unit 126 and the communication network 106. Send to server 103 (ST816).
- the preview configuration data server 103 is unilaterally sending a video preview, audio preview, still image preview, or text preview to the receiving terminal 104 via the broadcast network, etc., the video required to generate the preview data
- a preview, an audio preview, a still image preview, a text preview, and the like may be extracted and received from the data stored in the receiving terminal 104.
- the preview generation unit 132 sends the child element “URI” 510 of the element “Video” to the preview configuration data server 103. Also, if the preview generating unit 132 determines that the receiving terminal 104 does not have the ability to display a moving image, the preview generating unit 132 previews the child element “pictureURI” 521 of the element “Alternativepicture” in order to request an alternative still image of the moving image. Send to configuration data server 103. Furthermore, when the receiving terminal 104 determines that the receiving terminal 104 does not have the ability to display still images, the preview generation unit 132 extracts an element “AlternativeText” 512 that is an alternative text of the moving image.
- the preview configuration data server 103 sends a distribution request (specifically, reference destination information) sent from the receiving terminal 104 such as a video preview, audio preview, still image preview, and text preview. Is received by the preview management unit 124 via the reception unit 116.
- the preview management unit 124 analyzes the reference information of the video preview, audio preview, still image preview, and text preview described in the distribution request, and the corresponding data is stored in the video preview storage unit 119 and the audio preview storage, respectively. Extracted from the unit 120, the still image preview storage unit 121, and the text preview storage unit 122.
- the preview management unit 124 transmits the extracted video preview, audio preview, still image preview, text preview, and the like via the transmission unit 117 and the communication network 106 to the reception terminal 1. Send to 04 (ST817).
- the preview configuration data acquisition unit 131 of the reception terminal 104 acquires a video preview, audio preview, still image preview, text preview, and the like from the preview configuration data server 103 via the reception unit 125.
- the preview generation unit 132 arranges the video preview, audio preview, still image preview, text preview, and the like acquired by the preview configuration data acquisition unit 131 based on the arrangement information of the preview metadata. Data is generated (ST818).
- preview generation unit 132 sends the generated preview data to display unit 129, which displays the display unit 129 (ST819).
- Display unit 129 may display preview data using an alternative still image or an alternative text when the reception state of the preview data is poor. For example, when preview data is transmitted by broadcasting and a video preview to be displayed has not been received, the receiving terminal 104 extracts the received alternative still image or alternative text and displays it as preview data. Also good. In addition, when a video preview distribution request is transmitted to the preview configuration data server 103 and the preview data distribution does not start or end even after a predetermined time has elapsed, the receiving terminal 104 receives the preview configuration data server 103. Alternatively, a request for distributing an alternative still image or alternative text for video preview may be transmitted, and the received alternative still image or alternative text may be displayed as preview data.
- the content processing unit 133 receives from the content server 101.
- the sent content is converted into a form that can be displayed by the display unit 129 and sent to the display unit 129.
- display unit 129 reproduces and displays the content (ST821).
- receiving terminal 104 can also actively generate preview data for the preview meta data Taka.
- the preview data contains reference destination information for the data that constitutes the preview data, not the actual preview data. Therefore, when changing the preview data, the preview data can be changed by changing the reference destination information. Easy to change data This enables flexible preview distribution.
- the reference destination information or the data stored in the reference destination information is changed.
- the receiving terminal 104 need only download the changed reference destination information or data. Compared with the conventional method of delivering the entire modified preview again, the communication fee is drastically reduced and the communication efficiency is improved.
- the preview metadata of the present embodiment can describe reference destination information of a plurality of data (video, audio, still image, text) constituting the preview data, and includes a plurality of data.
- the arrangement information of data (video, audio, still image, text) can also be described. Therefore, it is possible to generate rich preview data in which a plurality of different data (moving image, sound, still image, text) are combined. In other words, it is possible to generate preview data that can sufficiently judge the outline of complex contents in recent years from preview metadata.
- preview preview data such as video may be included in a part of preview metadata.
- the preview configuration data included in the preview metadata has a small amount of data.
- preview configuration data such as a video preview, audio preview, still image preview, and text preview for generating preview data is stored in the preview configuration data server 103, and The receiving terminal 104 can be used as needed. For this reason, the receiving terminal 104 only needs to acquire the preview configuration data stored in the preview configuration data server 103 only when necessary, so that it is possible to reduce the size of the storage device without having to provide a large storage device. . Also, since preview configuration data such as a video preview, audio preview, still image preview, and text preview is stored in the preview configuration data server 103, these preview configurations stored in the preview configuration data server 103 are stored. Data can be shared by multiple receiving terminals 104. As a result, the size of the storage device of the entire content distribution system 100 can be reduced.
- the preview composition data is actually included in the preview metadata (video preview, audio preview, still image preview, text preview, etc.). Since the reference destination information is described, the preview data can be updated by rewriting only the preview configuration data stored in the preview configuration data server 103 when the preview data is updated. . That is, the receiving terminal 104 can obtain new preview data by reducing processing related to preview update.
- the content server 101, the metadata server 102, and the preview configuration data server 103 have been described as separate configurations, but a single configuration may be used.
- the processing performed by the content server 101, the metadata server 102, the preview configuration data server 103, and the receiving terminal 104 may be a program that is executed by a general-purpose computer.
- the preview distribution technology of the present invention has the effect of enabling flexible distribution of previews between the distribution side and the user side, such as video, audio, still image, and text. It is useful as a delivery device, a receiving device, and a delivery system for delivering a preview of which multimedia content to a user terminal, and a delivery method, a reception method, and a transmission / reception method in these devices. In addition, since the preview-related data stored in advance can be reduced, the present invention produces a great effect when applied to an apparatus having a relatively small storage capacity such as a mobile terminal.
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Computer Security & Cryptography (AREA)
- Human Computer Interaction (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Information Transfer Between Computers (AREA)
Abstract
Description
Claims
Priority Applications (4)
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| CN200680006990.3A CN101133644B (zh) | 2005-03-02 | 2006-03-01 | 分发装置以及接收装置 |
| US11/817,559 US8850479B2 (en) | 2005-03-02 | 2006-03-01 | Distribution device and reception device |
| EP06715010.2A EP1855480B1 (en) | 2005-03-02 | 2006-03-01 | Distribution device and reception device |
| JP2007505986A JP5205050B2 (ja) | 2005-03-02 | 2006-03-01 | 配信装置および受信装置 |
Applications Claiming Priority (2)
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| JP2005058116 | 2005-03-02 | ||
| JP2005-058116 | 2005-03-02 |
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| WO2006093197A1 true WO2006093197A1 (ja) | 2006-09-08 |
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| PCT/JP2006/303893 Ceased WO2006093197A1 (ja) | 2005-03-02 | 2006-03-01 | 配信装置および受信装置 |
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| US (1) | US8850479B2 (ja) |
| EP (1) | EP1855480B1 (ja) |
| JP (1) | JP5205050B2 (ja) |
| CN (2) | CN102281465B (ja) |
| WO (1) | WO2006093197A1 (ja) |
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| JP2009105719A (ja) * | 2007-10-24 | 2009-05-14 | Hitachi Ltd | 映像コンテンツ視聴端末 |
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| KR101377958B1 (ko) | 2007-08-07 | 2014-03-25 | 엘지전자 주식회사 | 데이터 전송 방법, 방송 수신기 및 방송 수신 방법 |
| JPWO2014171385A1 (ja) * | 2013-04-19 | 2017-02-23 | ソニー株式会社 | サーバ装置、コンテンツ提供方法及びコンピュータプログラム |
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| KR20110138276A (ko) * | 2009-04-09 | 2011-12-26 | 노키아 코포레이션 | 미디어 파일 스트리밍을 위한 시스템, 방법 및 장치 |
| KR20100132153A (ko) * | 2009-06-09 | 2010-12-17 | 삼성전자주식회사 | 휴대용 단말기에서 방송 채널 미리 보기 방법 및 장치 |
| KR20100138700A (ko) * | 2009-06-25 | 2010-12-31 | 삼성전자주식회사 | 가상 세계 처리 장치 및 방법 |
| BR112013014714A2 (pt) * | 2010-12-21 | 2016-10-04 | Linak As | atuador linear |
| EP2723085A4 (en) * | 2011-06-14 | 2015-04-01 | Samsung Electronics Co Ltd | METHOD AND DEVICE FOR RECORDING CONTENTS IN A BROADCAST SYSTEM |
| US8732579B2 (en) * | 2011-09-23 | 2014-05-20 | Klip, Inc. | Rapid preview of remote video content |
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| EP2890143A1 (en) * | 2013-12-31 | 2015-07-01 | Sling Media PVT Ltd | Providing un-interrupted program viewing experience during satellite signal interruptions |
| WO2017209514A1 (ko) * | 2016-06-01 | 2017-12-07 | 엘지전자(주) | 방송 신호 송수신 장치 및 방법 |
| US11310568B2 (en) * | 2020-05-05 | 2022-04-19 | Panasonic Avionics Corporation | Systems and methods for securely providing preview samples of media content distributed to in-flight entertainment systems |
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| KR101377958B1 (ko) | 2007-08-07 | 2014-03-25 | 엘지전자 주식회사 | 데이터 전송 방법, 방송 수신기 및 방송 수신 방법 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101133644A (zh) | 2008-02-27 |
| CN102281465A (zh) | 2011-12-14 |
| CN101133644B (zh) | 2012-02-22 |
| EP1855480B1 (en) | 2017-05-03 |
| US8850479B2 (en) | 2014-09-30 |
| JP5205050B2 (ja) | 2013-06-05 |
| EP1855480A4 (en) | 2010-05-26 |
| CN102281465B (zh) | 2014-12-24 |
| EP1855480A1 (en) | 2007-11-14 |
| US20090013351A1 (en) | 2009-01-08 |
| JPWO2006093197A1 (ja) | 2008-08-07 |
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