WO2001097044A1 - Dispositif et procede de recherche/distribution de contenu - Google Patents
Dispositif et procede de recherche/distribution de contenu Download PDFInfo
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- WO2001097044A1 WO2001097044A1 PCT/JP2001/004074 JP0104074W WO0197044A1 WO 2001097044 A1 WO2001097044 A1 WO 2001097044A1 JP 0104074 W JP0104074 W JP 0104074W WO 0197044 A1 WO0197044 A1 WO 0197044A1
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/40—Information retrieval; Database structures therefor; File system structures therefor of multimedia data, e.g. slideshows comprising image and additional audio data
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/95—Retrieval from the web
- G06F16/957—Browsing optimisation, e.g. caching or content distillation
- G06F16/9577—Optimising the visualization of content, e.g. distillation of HTML documents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99931—Database or file accessing
- Y10S707/99932—Access augmentation or optimizing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99931—Database or file accessing
- Y10S707/99933—Query processing, i.e. searching
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99931—Database or file accessing
- Y10S707/99937—Sorting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99931—Database or file accessing
- Y10S707/99938—Concurrency, e.g. lock management in shared database
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99931—Database or file accessing
- Y10S707/99939—Privileged access
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99941—Database schema or data structure
- Y10S707/99942—Manipulating data structure, e.g. compression, compaction, compilation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99941—Database schema or data structure
- Y10S707/99943—Generating database or data structure, e.g. via user interface
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99941—Database schema or data structure
- Y10S707/99944—Object-oriented database structure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99941—Database schema or data structure
- Y10S707/99944—Object-oriented database structure
- Y10S707/99945—Object-oriented database structure processing
Definitions
- a feature amount and additional information are extracted from content such as video information recorded in analog or digital form, and are used as a registration message.
- the content obtained as a result of the search is converted according to the processing capacity of the terminal device, and the converted content is transmitted using communication means according to the type of network to which the terminal is connected.
- the present invention relates to a content search and delivery device to be delivered and a content search and delivery method. Background art
- This system is a system that collects images scattered on the Internet, automatically builds a database, and searches and distributes desired images from the built data base.
- the conventional content search and distribution system is configured as described above. Assuming that the terminal device that receives the content obtained as a result of the search is a terminal with almost the same processing capacity, such as a PC or workstation connected to the Internet, Since the resulting content is only distributed in a certain format, it can easily be used on different networks and terminals with different processing capabilities, such as mobile phones, TV phones, and PCs. There were issues such as the inability to browse the content obtained as a result of the search.
- a content search result list obtained as a result of a search is transmitted through various networks such as a telephone line and a wireless network to various types of computers having different processing capabilities. It is an object of the present invention to obtain a content search / delivery device and a content search / delivery method that can be delivered in a format according to a terminal, for example, a mobile phone, a videophone, a PC (Personal Computer), or the like. Disclosure of the invention
- a content search and delivery device searches for a data base in which content and its additional information are stored based on information from a terminal device, and delivers the data extracted as a result of the search to the terminal device.
- a content search and distribution device that edits data extracted as a result of the search according to the processing capability of the terminal device and distributes the data to the terminal device.
- the data extracted from the database can be easily output from various terminals having different data processing capabilities.
- a content search and distribution device searches a database based on information from a terminal device, extracts additional information of a content obtained as a result of the search, and retrieves a search result including the additional information.
- List output A template search unit, a search result list editing unit that edits a search result list from the content search unit based on information from the terminal device into a form that can be displayed on the terminal device according to the processing capability of the terminal device, and a search. It has a search result list distribution unit that distributes the search result list edited by the result list editing unit to the terminal device.
- the database stores the weighted registration metadata as additional information, and the content search unit performs the registration metadata based on information from the terminal device.
- a database is searched with reference to the above, and additional information of the content obtained as a result of the search is extracted.
- a content search / delivery device includes a search message / data generation unit that generates a content search message / data based on information from a terminal device and outputs the content search message / data to a content search unit.
- the content search unit searches for a database based on the information from the terminal device and the database from the search-data-and-night generator, and adds the additional information of the content obtained as a result of the search. It extracts and outputs a list of search results with the additional information.
- the terminal device does not need to be provided with the search metadata generation unit, so that the circuit size of the terminal device can be reduced.
- a content search and distribution device is based on information from a terminal device.
- the content is read from the base, and the read content is edited into a form that can be processed by the terminal device according to the processing capability of the terminal device.
- the output content editing unit and the content edited by the output content editing unit are output to the terminal.
- This has a content distribution unit that distributes the content search result to the device. This provides an effect that the content search result list extracted from the database can be easily output from various terminals having different processing capabilities.
- a content search and distribution device provides a content search / delivery device that stores a content and registration data of the content, a link information to the content, and a registration data of the content.
- the output content editing unit reads link information from a database based on information from the terminal device, and reads content based on the link information.
- a content search and distribution method is directed to searching for a database storing content and its additional information based on information from a terminal device, and distributing data extracted as a result of the search to the terminal device.
- This is a content search distribution method that edits the data extracted as a result of the search according to the processing capacity of the terminal device and distributes the data to the terminal device.
- FIG. 1 is a diagram showing an overall configuration of a content search / delivery system of the present invention.
- FIG. 2 is a diagram showing a configuration of a content search / delivery device A according to the first embodiment.
- FIG. 3 is a flowchart showing a process of the input data registration unit 1 for registering a new content in the database B in the content search / distribution apparatus A of the first embodiment.
- FIG. 4 is a flowchart showing a process of the search and distribution service unit 5 in the content search and distribution device A of the first embodiment.
- FIG. 5 is a diagram showing a configuration of a terminal device D of the image search and distribution system according to the first embodiment.
- FIG. 6 is a flow chart showing a process of the terminal device D in the content search / delivery system according to the first embodiment.
- FIG. 7 is a diagram showing an example of search results displayed on the search result list display section 31 of the terminal device D in both (a) and (b).
- FIG. 8 is a diagram showing a configuration of a terminal device D corresponding to the content search / distribution device A of the second embodiment.
- FIG. 9 is a diagram showing a configuration of a content search / distribution apparatus A according to the second embodiment.
- FIG. 10 is a diagram showing a configuration of a content search / distribution apparatus A according to the third embodiment.
- FIG. 11 is a flowchart showing the processing of the input data registration unit 1 for registering a new content in the data base B in the content search / distribution apparatus A of the third embodiment.
- FIG. 12 shows a search and delivery service of the content search and delivery device A of the third embodiment.
- 6 is a flowchart showing processing of a screw unit 5.
- FIG. 13 is a diagram showing an example of a weight coefficient table according to the fourth embodiment. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a diagram showing an overall configuration of a content search / delivery system.
- A is a content search / distribution device according to the present invention comprising a server or the like
- B is a data pace at which various contents and their registration data are stored
- C is an Internet or Various networks such as telephone lines such as ISDN, wireless, dedicated cables, terrestrial satellite TV broadcast networks, etc.
- D is a content and search / distribution device.
- terminal devices with different processing capabilities, such as terminals and digital televisions.
- a terminal device D such as a PC is connected to a network C such as an Internet network via a LAN or the like, and another terminal device D is an existing telephone line such as an ISDN.
- a network C such as a network
- a terminal device D such as a mobile phone or a personal digital assistant is connected to a wireless network C
- a terminal device D such as a digital television is connected via a network. It is possible to connect to network C such as terrestrial Z satellite TV broadcasting network.
- FIG. 2 is a diagram showing a configuration of a content search / distribution apparatus A according to Embodiment 1 of the present invention.
- 1 is an input data registration section for inputting content, adding a message, and inputting it to a database
- 2 is a data register.
- the data input section for inputting the content to be registered in the evening pace B, 3 extracts the feature amount and additional information from the content input to the data input section 2, and adds the extracted information to the content as registration data.
- It is a metadata generation unit for registration. It should be noted that the registration message data generated by the registration message data generation unit 3 and the contents are stored in the data base B.
- the registration metadata generation unit 3 uses, for example, image color information, image texture information, motion information, object shape information, audio frequency characteristic information, sound It extracts the feature value of the content including at least one of the information on the size of the sound, the information on the sound source, and the language recognition information of the voice.
- the registration message generator 3 generates “additional information j of the content as an image coding method, an image bit rate, an image frame rate, an image resolution, an image spatio-temporal hierarchy.
- Image formats such as coded information, audio coding method, audio bit rate, descriptive information of elements (image, audio, text, etc.) that constitutes content, information on copyright of content, distribution conditions of content (Contents, free of charge, etc.), content file size, content file name, content identification number, content creator text information, content creation time information, image thumbnails, image parts, This is to extract additional information of the content including at least one part of the audio. .
- 5 searches the database B for content that meets the user's request, converts the list of contents obtained as a result of the search according to the capabilities of the terminal device D, and outputs it.
- the search and distribution service unit converts the content specified by the user from the list into a form that can be processed by the terminal device D and distributes the signal.
- 6 is a signal requesting a search from the terminal device D and a user requesting an output.
- Enter user request of user request such as content identification information 7 is a search key input unit for inputting a search key specified by the user from the terminal device D, and 8 is user information for inputting user identification information and user information on the terminal device D from the terminal device D.
- An input unit 9 is a terminal capability information acquisition unit that acquires information on the processing capability of the terminal device D from the user identification information input to the user information input unit 8 and the user information on the terminal device D as terminal capability information. “0” searches for a content that matches or is similar to the search key input in the search key input section 7 from the data pace B, and a registration message for one or more content selected as a result of the search. This is a content search unit that outputs a list of information such as evenings as a search result list.
- reference numeral 11 denotes a mode in which the search result list output from the content search unit 10 can be displayed on the terminal device D based on the terminal capability information obtained by the terminal capability information acquisition unit 9.
- a search result list editing unit that edits and outputs the search result list, and 12 is a search result list distribution unit that outputs the edited search result list output from the search result list editing unit 11 to the user.
- the user inputs the content designated by the user via the user request input unit 6 from the database B, inputs the terminal capability information obtained by the terminal capability information acquisition unit 9, and reads the content read out from the database B.
- Output content editing unit that performs editing processing such as converting the content into a format that can be processed by the terminal device D and outputs the content.14 is a content distribution that distributes the edited content output from the output content editing unit 13 to the terminal device D. It is.
- the input data registration unit 1 and the search / delivery service unit 5 constitute the content search / delivery device A.
- the content search and delivery device A may be configured by the search and delivery service unit 5 and the database B, or the content search and delivery device A may be configured by the search and delivery service unit 5 alone. You may make it perform.
- FIG. 3 is a flowchart showing a process of the input data registration unit 1 for registering a new content in the database B in the content search / delivery device A of the first embodiment.
- the data input unit 2 has one or both of an interface for inputting content via the network C and an interface for inputting content directly without passing through the network C.
- the content is externally input by one of the methods, and is output to the registration metadata generating unit 3 (step ST1).
- the new content is transmitted from the terminal device D to the input data registration unit 1 via the network C, or directly in the content search and distribution device A having the input data registration unit 1.
- the content such as an image or voice taken by a mobile phone having a camera is registered, or the content such as an image or voice received by e-mail or the like is searched for and distributed. It is possible to register the device A.
- an output terminal of a camera, a video camera, a PC, or the like is directly connected to the input terminal (not shown) of the content search and distribution device A to input the data.
- the input / output unit 2 has an interface for inputting content via the network C and an input interface for inputting directly without passing through the network C. It has one or both of the faces.
- the registration message generation unit 3 uses the read content Information such as quantity and additional information is extracted (step ST 2).
- the extracted feature amount includes, for example, the color and texture of the image included in the read content, the motion, the shape, and the frequency characteristics of the audio included in the read content.
- a keyword describing the characteristics of the read content and additional information for the read content are added.
- the additional information includes, for example, the encoding method of the image included in the content (MPEG-1, MPEG-2, MPEG-4, JPEG, GIF, BMP, etc.), bit rate, frame rate, resolution, Information about the image format, such as the spatio-temporal layering information of the image, the coding method of the audio included in the content (GSM—AMR, MPEG—1, MPEG—2, MPEG—4, etc.) Traits, descriptions of the elements that make up the content (images, audio, text, software), information on the copyright of the content, information on the distribution conditions of the read content (paid Z free, etc.), file size of the content , File name, ID number, creator information, created time information, thumbnail of image included in content, part of image, part of audio, etc.
- the encoding method of the image included in the content MPEG-1, MPEG-2, MPEG-4, JPEG, GIF, BMP, etc.
- bit rate bit rate
- frame rate resolution
- Information about the image format such as the spatio
- the registration metadata generating unit 3 uses the feature amounts and additional information of the content extracted as described above, for example, in advance, such as a format specified by MPEG-7.
- a registration message (characteristic descriptor) described according to the defined format is generated (step ST3), and the generated registration message is added to the corresponding content.
- the contents and the registration data are stored in the data storage pace B (step ST 4).
- FIG. 4 shows a search performed by the content search / delivery device A according to the first embodiment.
- 5 is a flowchart showing the processing of the distribution service unit 5.
- Information relating to the user includes, for example, user identification information such as a user name, a user registration number, a group name to which the user belongs, information on the type of the terminal device D, and information on the processing capability of the terminal device D. is there.
- a search key is input from the terminal device D to the search key input unit 7 (step ST12), and a signal requesting a search is input from the terminal device D to the user request input unit 6 (step ST12).
- the search key includes, for example, a keyword, a registration message that describes the feature amount and additional information of the content, a file format such as an image and a sound included in the content, a resolution, There is a file size.
- the content search unit 10 When the search request signal and the search key are input, the content search unit 10 performs a matching process between the search key and the keyword / feature described in the registration metadata included in the database B. (Step ST14), searching for one or more contents matching or similar to the search key, and storing the registration message stored together with the one or more contents obtained as a result of the search.
- the additional information such as one night is extracted and output to the search result list editing unit 11 as a search result list (step ST15).
- the information posted in the search result list includes, for example, the encoding method of the image included in the content (MPE G-1, MP EG-2, MPEG-4, JPEG, GIF, BMP, etc.), Information on image format such as bit rate, frame rate, resolution, spatio-temporal layering information of the image, and audio coding method included in the contents (GSM—AMR, MPEG-1, MP EG-2, MPE G-4, etc.), bit rate, description of elements (image, sound, text, software) that make up content, Information on the copyright of the content, information on the distribution conditions (paid / free, etc.) of the read content, content file size, file name, ID number, information on the creator, created time information, images included in the content There are thumbnails, parts of images, parts of audio, etc.
- the terminal capability information acquiring unit 9 acquires the terminal capability information on the processing capability of the terminal device D included in the user information from the terminal device D input to the user report input unit 8, and edits the search result list. Output to section 11 (step ST16).
- the terminal capability information is obtained from the terminal device D.
- the present invention is not limited to this.
- the receiving terminal information of the user may be registered in advance at the time of user registration, and the terminal capability information registered in the content search and distribution device A may be acquired from the user identification information.
- the terminal capability information includes the image coding method used by terminal device D, the resolution, bit rate, frame rate, and image coding format of images that can be received and displayed by terminal device D, and the audio coding method used by terminal device D. And the bit rate of audio that can be received and displayed on the terminal device D and output.
- the search result list editing unit 11 since the search result list editing unit 11 also inputs the search result list output from the content search unit 10, based on the terminal capability information from the terminal capability information acquisition unit 9, the content search unit 11 From the information included in the search result list starting from 10, the terminal device D edits, for example, extracts only information that can be received and displayed, and outputs the information to the search result list distribution unit 12 (step ST 1). 7) The search result list distribution unit 12 distributes the search result list edited by the search result list editing unit 11 to the terminal device D that has requested the content search via the network C.
- the distribution information to the terminal device D included in the search result list includes, for example, the file name of the content extracted as a result of the search, the name of the image encoding method of the content, and the image encoding method of JPEG or the like. Thumbnails are included. However, if the terminal device D is, for example, a mobile phone terminal and currently does not have a function of decoding and displaying an encoded image such as JPEG, an image encoded in JPEG or the like from the search result list.
- Terminal device In D, when the search result list is displayed, the user makes a network request for a specific content specified by the content identification information from the content described in the search result list. The content is transmitted to the content search and distribution device A via C.
- the user request input unit 6 of the search / delivery service unit 5 inputs the user request from the terminal device D and outputs it to the output content editing unit 13 (step ST 19) ).
- the output content editing unit 13 reads the content specified by the content identification information input from the user request input unit 6 and the registration data for the content from the data base B (step ST20). Then, based on the terminal capability information of the terminal device D which has transmitted the user request, it is determined whether or not the read content can be received and displayed on the terminal device D (step ST2). 1).
- the output content editing unit 13 determines that the content read out from the data base B can be received and output by the terminal device D as it is (step ST21 "Yes").
- the content read out from the base B is output to the content distribution unit 14.
- the content distribution unit 14 distributes the content output from the output content editing unit 13 to the terminal device D (step ST23).
- the output content editing unit 13 determines that the content read from the database B cannot be received and output by the terminal device D, such as display (step ST21 “No”). Then, the content read out from the database B is edited such as converting it into a format that can be received and displayed on the terminal device D (step ST22), and then output to the content distribution unit 14. At this time, the conversion processing performed by the output content editing unit 13 includes image coding method conversion, resolution conversion, bit rate conversion, frame rate conversion, audio coding method conversion, bit rate conversion, etc. . In addition, for example, if the content is composed of images and audio and the terminal device D does not support audio / video, only a part of the content is extracted, such as extracting only the images included in the content.
- the terminal device D supports only the pace layer and does not support the enhancement layer
- processing such as extracting only the pace layer may be performed.
- the content distribution unit 14 distributes, to the terminal device D, the content that has been converted by the output content editing unit 13 into a form that can be received and displayed by the terminal device D as described above (step ST2). 3).
- FIG. 5 is a diagram showing a configuration of a terminal device D of the image search and distribution system according to the first embodiment.
- reference numeral 21 denotes a search key menu command input by the user, extracts the readout feature amount and additional information, and adds them to the search key as a registration message overnight.
- Information, search keys and user commands A search request unit for transmitting a search request to the content search / distribution apparatus A; 22 a user command input unit for inputting a user request such as a command for requesting a search (identification information of a content for which the user requests output); Is user identification information and terminal equipment!
- 24 is a content input unit that captures content such as images and audio from a digital video camera or the like as search target content
- 25 is a user that inputs a user search key specified by the user This is a search key input section.
- reference numeral 26 denotes a search message that extracts the feature amounts and additional information of the search target content input from the content input unit 24 and outputs the extracted information as a registration message.
- the evening generation unit 27 receives the user search key entered in the user search key input unit 25 and the registration data generated by the search "Metade / night generation unit 26" as content search distribution A search key output unit that outputs to the device A.
- 28 is a user request output that outputs to the content search and distribution device A a user request such as a signal for which the user requests a search and identification information of the content for which the user requests the output. Department.
- reference numeral 29 denotes a search result processing unit that receives information obtained as a result of a search performed by the content search / distribution device A and outputs the information to a user;
- the search result list input section that receives the search result list obtained from the content search and distribution device A, and 31 is a search result that displays the search result list input to the search result list input section 30
- the list display section, 32 is a content receiving section that receives the content specified by the user from the search result list from the content search and distribution device A, and 33 is the user that receives the content received by the content receiving section 32.
- This is a content output unit that displays on the screen or outputs by voice or the like.
- the terminal device D will be described in which the search request unit 21 and the search result processing unit 29 are provided together. However, the search request unit 21 and the search result processing unit 29 may be provided in different terminal devices D.
- FIG. 6 is a flowchart showing a process of the terminal device D in the content search / delivery system according to the first embodiment.
- the user information output unit 23 of the terminal device D Information about the user is transmitted to the content search / distribution device A (step ST31).
- the information on the user includes, for example, user identification information, the type of the terminal device D, and information on the processing capability of the terminal device D. It should be noted that this user information is input by the user command input unit 22 and is connected to the content search and distribution device A when the user information is input by the user command input unit 22 after connection with the content search and distribution device A.
- the information may be transmitted, or the information input by the user command input unit 22 may be stored in the user information output unit 23 in advance, and the user information may be automatically transmitted to the content search / distribution apparatus A when connected.
- the output unit 23 may be configured to transmit to the content search / delivery device A.
- the user inputs the content to be searched into the content input section 24 of the terminal device D (step ST32).
- the input of the content is performed by directly inputting an image or a picture from a digital video camera, a microphone, or the like.
- content such as audio is imported, and in other cases, content such as images and audio is imported via the network C.
- the content input to the content input unit 24 is output to the search data generation unit 26, and the search metadata generation unit 26 extracts the feature amount and additional information of the search target content.
- Search key for registration Output to the output unit 27 (step ST33).
- the feature amounts extracted by the search message generation unit 26 include, for example, the color, texture, movement, and shape of the image included in the search target content, and the frequency characteristics of the audio included in the read content. is there.
- the additional information extracted by the search metadata generation unit 26 includes, for example, an encoding method (MP EG-1, MP EG-2, MP EG-4, JPEG-4) of an image included in the search target content. , GIF, BMP, etc.), bit rate, frame rate, resolution, coding method of audio included in the content (GSM-AMR, MPEG-1, MPEG-2, MPEG-4, etc.), video ⁇ There are rates.
- a user search key designated by the user is input to the user search key input section 25 and output to the search key output section 27 (step ST34).
- the user search keys include, for example, keywords related to content, file name, file size, information on the time when the content was generated, approximate color and texture of the image, movement, shape, and approximate frequency characteristics of audio. is there.
- the registration message generated by the search message generation unit 26 and the user search key input from the user search key input unit are output to the search key output unit 27 as a search key.
- the search key output unit 27 outputs a search key including the registration message and a user search key to the content search / distribution device A which is a server via the network C. (Step ST35).
- the search request signal is sent to the content search / delivery device A via the user request output unit 28.
- Sent step ST36.
- the output of various information from the terminal device D in these steps ST31, ST35 and ST36 is not limited to the output in this order. It is.
- the content search / distribution device A receives the search request signal transmitted from the terminal device D by the operation of the user via the network C, the registration message, and the user search key, As described above, based on the search key sent by the user, the content is searched for at the pace B overnight.
- the search result list generated as a result of the search performed by the content search / distribution device A is transmitted to the terminal device D via the network C as described above, and the terminal device D searches the search result processing unit 29.
- the result list input unit 30 is transmitted from the content search / distribution device A and receives the search result list (step ST37).
- the search result list input unit 30 displays the received search result list on the search result list display unit 31 and allows the user of the terminal device D to browse (step ST38).
- the user refers to the search result list displayed on the search result list display section 31 and selects a content desired to be distributed from the search result list, and identifies identification information of the selected content.
- An input is made to the user command input section 22 of the terminal device D (step ST39).
- the identification information of the content input to the user command input unit 22 is output from the user request output unit 28 and transmitted to the content search and distribution device A which is a server via the network C (step ST 4 0) ⁇
- the content retrieval / delivery device A reads the content specified by the user from the database B in accordance with the content identification information from the user, and distributes the content to the terminal device D of the user.
- the content delivered from the content search and delivery device A is received by the content receiving unit 32 of the terminal device D of the user (step ST 41), the content is output to the user by the content output unit 33 in an output method according to various media such as display and audio output (step ST 42).
- the content may be displayed on the search result list display unit 31 together with the search result or separately from the search result.
- the content search / delivery system according to Embodiment 1 is used to convert a golf tee shot scene taken by a digital video camera or the like from a golf tee shot scene of another player to a search result. Search for content that includes sports video content in order to find out information on the extracted players (name of the player, frontal image, hometown, average score, world ranking, past award history, etc.) An example will be described in which a search is performed by accessing distribution device A.
- the user information output unit 23 accesses the user ID, for example, the content search / delivery device A.
- Information about the processing capability of the terminal device D such as a login name, etc.
- the image encoding method that can be received and displayed is MPEG-4 and the size is 176 x 144 pixels
- the audio encoding method that can be received and output is GSM—User information such as AMR is transmitted from the user information output unit 23 of the terminal device D to the content search / distribution device A via the network C.
- the user information of the terminal device D is input to the user information input unit 8 of the content search / delivery device A, and the terminal capability information acquisition unit 9 is input to the terminal device input to the user information input unit 8.
- the terminal capability information of the terminal device D is obtained from the user information of D.
- the terminal device D uses its own camera or another device's camera or the like for the search target (Fig. Not shown.
- the image photographed by) is input to the content input unit 24 of the terminal device D such as a mobile phone.
- the image input to the content input unit 24 is sent to the search message and overnight generation unit 26, and features such as the shape, color, movement, and texture of the entire image and the objects included in the image are included.
- the amount is extracted and sent to the search key output unit 27 as a registration message.
- the user search key input unit 25 displays, as a search key input by the user, for example, “Contents extracted as a result of search have no restrictions on distribution conditions. Or "The content to be extracted as a result of the search is limited to the video content of the players within the world ranking 100.” Is input, and the input user search key is sent to the search key output unit 27.
- a search request signal is transmitted from the user request output unit 28 to the user request input unit 6 of the content search and distribution device A, and then the search key is output.
- the registration message and the user search key output from the unit 27 are transmitted as search keys to the search key input unit of the content search and distribution device A.
- the registration stored in the database B is performed based on the registration message from the terminal device D input to the data input unit 2 and the user search key.
- the registration data from the terminal device D and the user search key are matched or similar. Only for video content that has features and meets the conditions described in the search key, information about the video content is extracted.
- the information about the video content extracted here includes, for example, the image of the first frame of the video content, the registration number of the video content, the file name, the file size, the image and audio encoding method, and the image. Resolution, bit rate, frame rate, audio bit rate, and text content for video content. Information on these video contents is sent to the search result list editing unit 11 as a search result list.
- the search result list editing unit 11 edits the search result list from the content search unit 10 such as conversion and processing according to the capabilities of the terminal device D.
- the search result list edited by the search result list editing unit 11 is transmitted from the search result list distribution unit 12 to the terminal device D via the network C, and the search result list input unit of the terminal device D is input. Entered in 30.
- the search result list input to the search result list input section 30 is displayed on the search result list display section 31.
- 7 (a) and 7 (b) show an example of search results displayed on the search result list display section 31 of the terminal device D.
- FIG. 7 (a) shows an example of the display of the search result list in the search result list display section 31 of the terminal device D having sufficient display processing capability such as a PC.
- 3la is a search target video input by the user via the content input unit 24 or the like, and is, for example, a golf parting scene.
- 3 1 b is a search result list obtained by the content search unit 10 sent from the content search and edit unit 11 of the content search and distribution device A, and obtained by the search.
- 3 1 c 1 to 3 1 c 3 Are search results 1, 2, 3, and 3 that are thumbnails of multiple golf putting scenes that match or are similar to the search target video 31a obtained as a result of the search displayed on the search result screen 31b.
- ⁇ ⁇ ⁇ ⁇ Images, 3 1 dl to 31 d 3 are the search results 1, 2, 3, ⁇ ⁇ ⁇ ⁇ images 3 1 c 1 to 3 1 c 3 and the corresponding search results 1, 2, 3 , ... If it is an overnight about the athlete, for example, the name of the athlete, face image, hometown, average score, world ranking, past award history, etc. should be output.
- Fig. 7 (b) shows the search when the display screen of the search result list display section 31 of a mobile phone or the like is small, or when a large amount of information is downloaded, and when the data is transmitted to the terminal device D which cannot be downloaded due to a large load.
- An example of display of a search result list in a result list display unit 31 is shown.
- the search result list includes, for example, text e-mails 31 e relating to search result 1 (player 1) and a candidate in the preceding list.
- the user selects a content desired to be distributed from the displayed search result list, and selects the content.
- the identified content identification information is input to the user command input section 22.
- the content identification information may be any means or method capable of identifying only a specific content from the search result list. For example, an index number is assigned to each content information listed in the search result list. If such information is added, the index number or the like can be used as identification information.
- the content identification information input to the user command input section 22 is output from the user request output section 28 and sent to the content search / delivery device A via the network C, and the content search / delivery apparatus Input to the user request input section 6 of device A.
- the content identification information input to the user request input unit 6 is output to the output content editing unit 13, and the output content editing unit 13 outputs the content desired by the user based on the input content identification information. Read from base B overnight.
- the output content editing unit 13 performs processing such as format conversion on the content read from the database B based on the terminal capability information acquired by the terminal capability information acquiring unit 9 and distributes the content. To a format suitable for the capabilities of the terminal device D to be used.
- the encoding method for image data of video content registered in database B is MPEG-2
- the resolution is 720 x 480 pixels
- the encoding method for audio data is MP EG — 1 Audio Laer 2
- the terminal device D is a mobile phone
- the image coding method that can be processed by the terminal device D is MPEG-4
- the screen display size is 176 x 144 pixels
- the audio coding method is GSM.
- AMR converts the image coding method from MP EG-2 to MP EG-4 and change the resolution from 720 x 480 to 1 76 x 144 pixels
- the data encoding scheme is also converted from MPEG-1 Audio Layer 2 to GSM-AMR and output as a data format that can be processed by the terminal device D.
- the encoding method and the resolution have been described by way of example, but the output content editing unit 13 may convert the bit rate to a frame rate.
- the output content editing unit 13 transmits only the image data from among the image and the sound, for example. For example, if only part of the image is cut out and transmitted, for example, if the image data is hierarchical and consists of a base layer and an enhancement layer In this case, only a part of the content may be transmitted, such as transmitting only the base layer data.
- the condition “Search only for copyright-free content for free” is specified by the user's specified conditions, instead of distributing the content itself for paid content, Only the portion included in the content that can be distributed free of charge may be extracted. For example, if the content is a "movie", the content that can be distributed free of charge includes a content of representative scenes such as a "movie trailer".
- the output content editing unit 13 performs processing such as format conversion on the content read from the database B based on the terminal capability information from the terminal capability information acquisition unit 9, and the terminal device D
- the content distribution unit 14 transmits the edited content to the terminal device D via the network C.
- the content receiving section 32 receives the content from the content search / distribution apparatus A, which is a server, and the received content is displayed to the user via the content output section 33, and audio is output. For example, it is output in an output format according to the type of media of the content.
- the content search / distribution device A transmits the content specified by the search result list viewer, which is the search result, to the user based on the processing capability of the terminal device D.
- the terminal device D is edited so that it can be received, displayed and output, so that the search result list and the content specified for distribution by the user can be easily displayed and output on various terminals with different processing capabilities.
- a search is performed using a sample image or image of a search target captured by a user, and as a result of the search, the content delivered to the user is described as a content including an image and a voice.
- the present invention is not limited to this, and may be configured to search using sample voices and deliver content of images only, or may be configured to search using sample voices and deliver content including images and voices Of course it is good.
- the input data overnight registration unit 1, the data overnight B, and the search / delivery service unit 5 of the content search / delivery device A described in the first embodiment are provided in one content search / delivery device A.
- the present invention is not limited to this, and may be in different content search / delivery devices A.
- a registration message created by the content creator individually together with the content is used in the registration.
- Content B may be registered, or the content creator who describes the distribution conditions etc. shall be created by the content creator. It may be created in A and registered in database B each time.
- search request unit 21 and the search result processing unit 29 of the terminal device D described in the first embodiment may be applied to different terminal devices D.
- Embodiment 2
- the description is made such that the search is performed using the registration message generated by the search message generation unit 26 of the terminal device D.
- the content search / delivery device A of the second embodiment the content search / delivery device A is provided with the same search data generation unit, and the content search / delivery device A has Overnight Is generated, and the search is performed using the generated registration message.
- FIG. 8 is a diagram showing a configuration of a terminal device D corresponding to the content search / distribution device A of the second embodiment.
- the terminal device D corresponding to the content search / distribution device A according to the second embodiment is different from the terminal device D according to the first embodiment shown in FIG.
- the content to be searched input from the content input unit 24 is sent to the content search and distribution device A via the search key output unit 27 together with the user search key.
- FIG. 9 is a diagram showing a configuration of a content search / delivery device A according to the second embodiment.
- 4 1 extracts the feature amount and additional information of the content to be searched out of the search keys input from the search key input unit 5, and outputs the extracted information as a registration message for the search.
- This is a search message generator.
- the other configuration is the same as the configuration of the content search and distribution device A of the first embodiment shown in FIG. 2, and thus the same reference numerals are given and the description of those configurations is omitted.
- the search key input unit 5 of the search / delivery service unit 5 receives the search key from the terminal device D via the network C. Output to generator 41.
- the search key from the terminal device D received by the search key input unit 5 includes the user search key and the content to be searched.
- the search message generation unit 41 extracts the feature amount and additional information of the content to be searched from the search keys input from the search key input unit 5, and searches the extracted information. It is output to the content search unit 10 together with the user search key as registration metadata for use.
- the registration metadata and the user search key are input from the search message data generation unit 41, and thereafter, as in the case of the first embodiment, the registration message is input.
- the evening base B is searched to extract information related to the related video content, and the extracted information is output to the search result list editing unit 11 as a search result list. After that, the operation is the same as that of the first embodiment, and the description of the operation is omitted.
- the content search / delivery device A transmits the search result list as the search result and the content designated by the user to the terminal device D in the same manner as in the first embodiment. Based on the processing capability, it can be easily displayed and output on various terminals having different processing capabilities, and the content search / distribution device A is further provided with a search message / night generator 41.
- the terminal device D side can cope without the provision of the search metadata generation unit 26, and the circuit scale of the terminal device D side can be reduced.
- the content search and delivery device A is configured to store the content and the registration message overnight in the database B
- the network If the content exists on network C, for example, if it is stored on another database server accessible via network C, the content of content will be stored in database B instead of the content. It is characterized in that it is configured to store link information.
- FIG. 10 is a diagram showing a configuration of a content search / distribution apparatus A according to the third embodiment.
- 51 is the output content from data base B
- This is an input control unit for inputting content from the network C and outputting to the output content editing unit 13 when link information of the content is input to the editing unit 13.
- the other configuration is the same as the configuration of the content search / distribution apparatus A of Embodiment 1 shown in FIG. 2, and thus the same reference numerals are given and the description of those configurations will be omitted.
- FIG. 11 is a flowchart showing a process of the input data registration unit 1 when a new content is registered in the device B in the content search / delivery device A of the third embodiment.
- the data input unit 2 includes an interface for downloading and inputting content via the network C, and a tool connected to the apparatus without the network C (not shown). ) Has one or both of the input faces of the input face for directly inputting the content, etc., from the network or via the network C. Instead, the content is input from the outside, and output to the registration message / night creation unit 3 (step ST51).
- the registration message generation unit 3 extracts information such as the feature amount and additional information of the content from the input content (step ST52), and extracts the feature amount and additional information of the extracted content.
- a registration message (feature descriptor) in which information such as information is described in accordance with a predefined format is generated (step ST53). Up to this point, the same applies to the first embodiment and the like.
- the registration metadata generation unit 3 determines that the registered content has been input from the network C (step ST54 “Yes”), the registration metadata generation unit 3 determines that the registered content exists on the network C.
- the link information for downloading the content and the registration data are stored in the data base B at step ST55 (step ST55), but are not present on the network C but are directly input. If there is (step ST54 “No"), the content and the registration data are stored in the data pace B (step ST56).
- FIG. 12 is a flowchart showing the processing of the search / delivery service unit 5 of the content search / delivery device A according to the third embodiment.
- step ST61 user information regarding a user is input from the terminal device D to the user information input section 8 of the content search / distribution device A (step ST61), and then the content search message and user search are performed from the terminal device D.
- a search key such as a key is input to the search key input section 7 of the content search / distribution apparatus A (step ST62), and a search request signal requesting a search from the terminal apparatus D is sent to the user of the content search / distribution apparatus A. It is input to the input section 6 (step ST63).
- the content search unit 10 uses the input search key to generate a key-word feature described in the registration message included in the database B. Matching process (step ST64), and search for a match with or similar to the entered search key.
- Matching process step ST64
- each search result list Bok extracting the additional information stored as a search result list and outputs it to the list editing unit 1 1 with Kontendzu (Step ST 6 5) 0 ' also
- the user information input to the user information input unit 8 is sent to the terminal capability information acquisition unit 9, and information on the processing capability of the terminal device D included in the user information is acquired by the terminal capability information acquisition unit 9 ( Step ST66).
- the terminal device D may be configured not to send the user information to the content search / delivery device A.
- the receiving terminal information of the user may be registered in advance, and the terminal capability information registered in the content search and delivery device A may be acquired based on the user identification information and the like.
- search result list extracted and output from the database: B by the content search unit 10 is output to the search result list editing unit 11.
- the search result list editing unit 11 includes only the information that can be received and displayed or output by the terminal device D among the information included in the search result list.
- the search result list is edited (eg, extracted) (step ST67), and the edited search result list is delivered from the search result list output unit 12 to the terminal device D via the network C (step ST67). Step ST68).
- the search result list from the content search and distribution device A is input via the search result list input unit 30 and the search result list is displayed on the search result list display unit 31.
- the user selects a specific content from the content described in the search result list displayed in the search result list display section 31 as a user.
- the identification information of the content specified by the user is transmitted as a user request from the user request output unit 28 to the content search and distribution device A via the network C.
- the user request from the terminal device D is input to the search / delivery service unit 5 via the user request input unit 6, and is output to the output content / edit unit 13 (step ST69). ).
- the processing so far is the same as the processing of the search and distribution service unit 5 in the content search and distribution device A of the first embodiment shown in FIG.
- step ST 7 0 only the registration metadata designated by the content identification information input to the user request input unit 6 is read out from the database B (step ST 7 0).
- the content specified by the content identification information is stored in the database B and the content stored on the network C, for example, the content that can be accessed via the network C.
- the link information to the content existing on the network C is stored in the database B in some cases, such as being stored in a database or a server.
- the output content editing unit 13 determines whether or not the search content specified by the content identification information is stored in the database B. Judge (Step ST71) o
- step ST71 “No” If the content to be searched is not stored in the database B (step ST71 “No”), it means that the content to be searched exists on the network C.
- the content editing unit 13 inputs the content specified by the user via the input control unit 51 from the network C by, for example, downloading the content (step ST72). On the other hand, if the content to be searched is stored in Step ST71 "Yes"), the output content editing unit 13 reads out and inputs the content designated by the user from the data base B (step ST73).
- the output content editing unit 13 can receive and display the content specified by the user read from the data base B or the network C by the terminal device D and output. It is determined based on the terminal capability information acquired by the terminal capability information acquiring unit 9 (step ST74).
- the output content editing unit 13 determines that the input content can be output as received and displayed by the terminal device D as it is (step ST74 “Yes”), the output content editing unit 13 converts the input content to the output content.
- the content is transmitted to the content distribution unit 14, and the content distribution unit 14 distributes the content from the output content editing unit 13 to the terminal device D (step ST 76).
- the output content editing unit 13 determines that the input content cannot be received and output by the terminal device D (step ST74 “No”), the output content editing unit 13 converts the input content to the relevant content.
- the terminal device D edits the data so that it can be received and output (step ST75), and outputs it to the content distribution unit 14.
- the content distribution unit 14 distributes the edited content, such as conversion to a form that can be received and output by the terminal device D, by the output content editing unit 13 to the terminal device D (step ST76). ).
- the content search / delivery device A determines the content designated by the user based on the processing capability of the terminal device D.
- the terminal device D is edited so that it can be received and output, so that the content specified to be distributed as a result of the search can be easily output to various terminals with different processing capabilities. Wear.
- the content existing on the network C is not stored in the data base B, and the data B is not stored in the data base B in place of the content. Since the information is configured to be stored, more content can be registered in the database B of the content search and distribution device A.
- the content search and delivery devices In the content search and delivery devices according to the first to third embodiments, it has been described that the content is searched for by performing the matching without weighting the feature amounts described in the meta-data list.
- the content search / delivery device In the content search / delivery device according to mode 4, a plurality of types of feature amounts described in the media data are extracted, and a sum obtained by performing weighted addition of each feature amount is used as a feature coefficient.
- a feature is that content is searched for by performing matching using the obtained feature coefficient.
- the fourth embodiment can be applied to any of the first to third embodiments.
- the fourth embodiment is characterized by using the content search and distribution device A of the first embodiment shown in FIG. 2 as an example. Only the operation will be described.
- the registration data generator 3 of the content search and distribution device A extracts a plurality of types of feature amounts from the content and prepares them in advance.
- a weighting factor corresponding to each extracted feature amount is obtained from the weighting factor table or the like, and the obtained feature amount and the weighting factor are multiplied to obtain a weighted feature amount. It is a coefficient.
- FIG. 13 shows an example of the weight coefficient table according to the fourth embodiment.
- the types of feature amounts such as “the average value of the hue component of the image” and “the horizontal component of the average motion vector of the object included in the image” are different.
- a list of corresponding weighting factors is prepared, and the features extracted when content is input are multiplied by the weighting factors corresponding to each feature from the list in Fig. 13 to obtain weighted features. After obtaining the quantity, the sum of the obtained weighted feature quantities is used as the feature coefficient. For example, the feature coefficient is stored in the data B overnight together with the content or content link information.
- the content search unit 10 When the content search unit 10 searches for content on the data base B, the content search unit 10 uses the plurality of characteristic amounts included in the search key input to the content search unit 10 when registering the content. Weighted addition is performed using the same table as the weight coefficient template, and the characteristic coefficient is obtained in the same manner as described above. Then, the content search unit 10 operates so as to perform a search by performing matching between the feature coefficient obtained as described above and the feature coefficient registered in the database B. Subsequent operations are the same as in Embodiment 1 above.
- the search result list obtained by searching for data B The read content can be easily displayed and output on various terminal devices D having different processing capacities, and the content search / distribution device A obtains a feature coefficient or a feature vector obtained by weighting and adding the feature amount of the content.
- the database is registered in the database B, and the search is performed using the feature coefficient or the feature vector.
- the sum of weighted feature amounts obtained by multiplying by the weighting factor has been described as being used as a feature factor in the search.
- a plurality of weighted features are added one by one or several, and a plurality of feature coefficients are obtained, and a search is performed using a feature vector having the obtained plurality of feature coefficients as coefficients. You may do so.
- the feature coefficient or the feature vector is registered at the time of data registration.
- the present invention is not limited to this. Obviously, a quantization coefficient or quantization vector obtained by quantizing a coefficient or a feature vector may be obtained, and the quantization coefficient or an index corresponding to the quantization vector may be registered.
- the content search / delivery device and the content search / delivery method according to the present invention provide a content search result list obtained as a result of a search through various networks such as a telephone line and a wireless network. It is suitable for distribution in a format according to different terminals.
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Description
Claims
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CN100367794C (zh) * | 2002-04-12 | 2008-02-06 | 三菱电机株式会社 | 元数据编辑装置 |
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US6751670B1 (en) | 1998-11-24 | 2004-06-15 | Drm Technologies, L.L.C. | Tracking electronic component |
US7127515B2 (en) | 1999-01-15 | 2006-10-24 | Drm Technologies, Llc | Delivering electronic content |
US20060195400A1 (en) * | 2000-10-13 | 2006-08-31 | Patrick Patterson | Controlling access to electronic content |
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Also Published As
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EP1291777A1 (en) | 2003-03-12 |
AU5676401A (en) | 2001-12-24 |
US7310628B2 (en) | 2007-12-18 |
KR20020020961A (ko) | 2002-03-16 |
CA2376266A1 (en) | 2001-12-20 |
TW512632B (en) | 2002-12-01 |
JP2001357008A (ja) | 2001-12-26 |
US20020107850A1 (en) | 2002-08-08 |
EP1291777A4 (en) | 2005-06-01 |
CN1383512A (zh) | 2002-12-04 |
CN1196063C (zh) | 2005-04-06 |
KR100515542B1 (ko) | 2005-09-20 |
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