JP2005190079A - Information processor and information processing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To extract a content element suitable for device information about a terminal device from one content including an element such as a document or an image, and to display the content in a form suitable for the terminal device. <P>SOLUTION: In the content provided from a content provision device, a plurality of content elements such as the used document or the image are prepared according to attribute information such as a document summarization degree, image quality or image size, and one content wherein combination of the attribute information about the content element and the content element correlated to the attribute information is structurally described is produced. The attribute information about the content element correlated to the device information is extracted as a content adaptive parameter by use of a correspondence table on the basis of the device information of the terminal device. By inputting the content adaptive parameter to the content and extracting the content element correlated to the attribute information, the content suitable for the device information is extracted. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an information processing apparatus and information processing method for performing terminal adaptation processing of content described in a structure description language.

  In recent years, with the spread of communication networks such as the Internet, various multimedia data such as documents, images, video, and audio described in a structure description language such as HTML (HyperText Markup Language) on WWW (World Wide Web). Distribution (publication, provision, exchange, etc.) of contents including is widely performed over a wide range.

  Furthermore, due to the remarkable development and spread of broadband such as ADSL and FTTH, large-capacity data transmission is becoming possible in a short time, and it is expected that content will be further diversified in the future.

  In addition, mobile computing devices such as mobile phones and PDAs are becoming popular. In particular, the demand for content distribution in the mobile environment is rapidly increasing due to the realization of Internet access services using mobile phones.

  In addition, BS digital broadcasting is started in December 2000, and terrestrial digital broadcasting is started in December 2003, so that digitalization of broadcasting is progressing in earnest.

  Thus, in the modern society, various media such as broadcast, CATV, mobile, and communication are mixed, and content and terminal devices that reproduce content are diversified accordingly. Under such circumstances, there is an increasing need for a technique for converting content according to the performance of various terminal devices and making the content reproducible in accordance with the performance of each terminal device.

  As a related art related to this, for example, there is a method described in Patent Document 1 related to adaptive conversion of content according to the performance of a terminal device.

  In the conventional method described in Patent Document 1, a piece of content in which all combinations of device information related to a terminal device and content elements associated with the device information as conditions are structurally described is generated. The device information of the terminal device is input as a parameter for the content, and the content element that satisfies the condition is extracted. As device information of the terminal device, the type of the terminal device, processing capability such as CPU and memory, display capability such as display resolution and number of display colors, OS and browser information used by the terminal device, and terminal device can be used. Decoder information and the like.

  For example, the display resolution of the terminal device is “800 × 600 or more”, “320 × 240 to 800 × 600”, or 320 × 240 or less ”, and the corresponding memory is 128 MB or more and 32 MB to 128 MB for the resolution“ 800 × 600 or more ”. , 32 MB or less, the resolution is 320 × 240 to 800 × 600 ″, and the content when the installed memory is 32 MB or more and 32 MB or less has a data configuration as shown in FIG.

Furthermore, when new conditions such as a communication speed of 1.5 Mbps or higher, 128 kbps to 1.5 Mbps, or 128 kbps or lower are added to the above, each is reflected as a new condition in the content, and the communication speed of the content shown in FIG. The data structure is as shown in FIG. 14 by adding conditions.
JP 2003-216640 A

  However, in the conventional method shown in Patent Document 1, when it is desired to make the content element correspond to various device information such as CPU, memory size, and resolution, it can be solved by adding a condition description related to the necessary device information each time. There is a problem that the description of content becomes long and complicated. Furthermore, when it is desired to adapt the content to new device information, it is necessary to write a new condition description in the content, which places a heavy burden on the content provider.

  The present invention has been made in view of the above problems. When content is made to correspond to device information of various terminal devices having different performances, the data size of the content is reduced, and content is added to new device information. It is an object of the present invention to provide an information processing apparatus that makes it unnecessary to change contents when it is desired to adapt the content.

  In order to solve the above problems, the present invention provides a device information input means for inputting device information indicating the performance of a terminal device, a content element which is a management unit of multimedia data, and the content element associated with the device information Content input means for inputting content comprising the attribute information, correspondence table storage means for storing a correspondence table between the device information and the attribute information, and the attribute information corresponding to the device information based on the correspondence table. An adaptive parameter extracting means for extracting as a content adaptive parameter, and a content adaptive processing means for extracting the content element associated with the attribute information from the content using the content adaptive parameter.

  According to the present invention, by extracting a content element using a correspondence table describing a correspondence relationship between terminal device information and content element attribute information, the content element is not described for each piece of device information. By describing according to the attribute information, the data size of the content can be reduced.

  Furthermore, when it is desired to adapt the content to new terminal device information, it is necessary to rewrite the content itself as in the conventional method by updating the correspondence table in which the correspondence between the device information of the terminal and the attribute information of the content element is described. This eliminates the burden on the content provider.

  An information processing apparatus according to a first aspect of the present invention is associated with a device information storage unit that inputs device information indicating the performance of a terminal device, a content element that is a management unit of multimedia data, and the device information. A content input unit that inputs content including attribute information of the content element, a correspondence table storage unit that stores a correspondence table between the device information and the attribute information, and the device information corresponding to the device information based on the correspondence table A configuration comprising: an adaptive parameter extracting unit that extracts attribute information as a content adaptive parameter; and a content adaptive processing unit that extracts the content element associated with the attribute information from the content using the content adaptive parameter. Take.

  With this configuration, when content that is adapted to device information is extracted from content according to the device information of the input terminal device, the content description can be simply performed and the amount of description can be reduced.

  According to a second aspect of the present invention, the information processing apparatus according to the first aspect further includes a correspondence table management unit that updates the correspondence table.

  With this configuration, even when content is to be adapted to new terminal device information, the content itself is updated as in the conventional method by updating the correspondence table describing the correspondence between the device information of the terminal and the attribute information of the content element. Since there is no need to rewrite, the burden on the content provider is reduced.

  According to a third aspect of the present invention, in the information processing apparatus according to the first aspect or the second aspect, the attribute information of the content element is an arithmetic processing capability, a display capability, a communication capability, or a battery capability of the terminal device. It is configured to be associated with at least one of them.

  With this configuration, it is possible to adaptively convert content based on one or a combination of arithmetic processing capability, display capability, communication capability, or battery capability of the terminal device.

  According to a fourth aspect of the present invention, in the information processing apparatus according to the third aspect, the attribute information of the content element includes a CPU type, a processing speed, a memory capacity, a storage device capacity, a display size, a display color number, and a communication. It is configured to be associated with at least one of speed and battery capacity.

  With this configuration, content can be adaptively converted based on one or a combination of CPU type, processing speed, memory capacity, storage device capacity, display size, number of display colors, communication speed, or battery capacity.

  According to a fifth aspect of the present invention, in the correspondence table in the information processing device according to any one of the second to fourth aspects, the device information uniquely corresponds to the attribute information of the content element. It is a thing.

  With this configuration, since the device information is uniquely associated with the attribute information of the content element, the extracted content element can be uniquely specified.

  According to a sixth aspect of the present invention, in the information processing apparatus according to any one of the first to fifth aspects, the adaptive parameter extraction unit extracts the corresponding attribute information from the apparatus information based on the correspondence table. In other words, one attribute information is selected from the attribute information for each attribute type, and is extracted as a content adaptation parameter.

  With this configuration, one attribute information can be selected and extracted as a content adaptation parameter for each attribute type, and an attribute value for each attribute type can be uniquely specified.

  According to a seventh aspect of the present invention, in the information processing apparatus according to any one of the first to sixth aspects, the device information includes the arithmetic processing capability, display capability, communication capability, or battery capability of the terminal device. It is configured to show at least one of them.

  With this configuration, the content can be adaptively converted according to the performance of the terminal device based on at least one of the information processing capability, display capability, communication capability, or battery capability of the terminal device.

According to an eighth aspect of the present invention, in the information processing apparatus according to any one of the first to seventh aspects, the content element is at least one of a document, an image, a moving image, audio, and link information. It is comprised as follows.

  With this configuration, various multimedia data such as documents, images, moving images, and audio, or link information can be handled as extraction elements as content elements.

  According to a ninth aspect of the present invention, in the information processing apparatus according to any one of the first to eighth aspects, at least one of the content and the device information is configured to be described in XML. .

  With this configuration, description of contents or device information can be made universal.

  An information processing method according to a tenth aspect of the present invention is related to a device information input step of inputting device information indicating the performance of a terminal device, a content element that is a management unit of multimedia data, and the device information. A content input step for inputting content composed of attribute information of the content element, a correspondence table storing step for storing a correspondence table between the device information and the attribute information, and the device information corresponding to the device information based on the correspondence table An adaptive parameter extracting step for extracting attribute information as a content adaptive parameter; and a content adaptive processing step for extracting the content element associated with the attribute information from the content using the content adaptive parameter. This is a characteristic information processing method. The effect is the same as in the first aspect of the present invention.

  A program according to an eleventh aspect of the present invention relates a computer to a device information input unit that inputs device information indicating the performance of a terminal device, a content element that is a management unit of multimedia data, and the device information. A content input unit that inputs content including attribute information of the content element, a correspondence table storage unit that stores a correspondence table between the device information and the attribute information, and the device information based on the correspondence table. Information for functioning as an adaptive parameter extracting unit that extracts the attribute information as a content adaptive parameter, and a content adaptive processing unit that extracts the content element associated with the attribute information from the content using the content adaptive parameter It is a processing program.

  With this configuration, the program is executed by installing a program in a computer. When content that is adapted to device information is extracted from content according to the device information of the input terminal device, the content description is simply performed. The amount of description can be reduced.

  A terminal device according to a twelfth aspect of the present invention includes a device information storage unit that inputs device information indicating the performance of the terminal device, a content element that is a management unit of multimedia data, and the device information associated with the device information. A content input unit that inputs content composed of attribute information of content elements, a correspondence table storage unit that stores a correspondence table between the device information and the attribute information, and the attribute corresponding to the device information based on the correspondence table An adaptive parameter extracting unit that extracts information as a content adaptive parameter, a content adaptive processing unit that extracts the content element associated with the attribute information from the content using the content adaptive parameter, and the extracted content A terminal device characterized by comprising a content playback unit for display Those were.

  With this configuration, it is possible to perform content adaptation processing according to the device information in the terminal device. As a result, the processing load on the proxy (relay device) is reduced, and a push type model such as broadcasting can be supported.

  A content providing device according to a thirteenth aspect of the present invention includes a content request receiving unit that receives a content request from a terminal device, a content management unit that acquires content corresponding to the content request, and device information indicating the performance of the terminal device. A device information storage unit for inputting content, a content input unit for inputting content composed of a content element which is a management unit of multimedia data, and attribute information of the content element associated with the device information, and the device information A correspondence table storage unit that stores a correspondence table of the attribute information, an adaptive parameter extraction unit that extracts the attribute information corresponding to the device information as a content adaptation parameter based on the correspondence table, and the content adaptation parameter The content element associated with the attribute information from the content A content adaptive processor for extracting, which is constituted as a content providing device is characterized in that the extracted content; and a content transmission unit for transmitting to the terminal device.

  With this configuration, it is possible to perform content adaptation processing in accordance with the device information in the content providing device. Thereby, since only the extracted content is transmitted, the bandwidth can be used more effectively.

  A content providing method according to a fourteenth aspect of the present invention includes a content request receiving step for receiving a content request from a terminal device, a content management step for acquiring content corresponding to the content request, and a device indicating the performance of the terminal device. A device information input step for inputting information, a content input step for inputting content consisting of a content element which is a management unit of multimedia data, and attribute information of the content element associated with the device information, and the device information A correspondence table storing step for storing a correspondence table between the attribute information and the attribute information, an adaptive parameter extracting step for extracting the corresponding attribute information from the device information as a content adaptive parameter based on the correspondence table, and using the content adaptive parameter From the content A content adaptive processing step of extracting the content element associated with the information, which is a content providing method is characterized in that the extracted content; and a content transmission step of transmitting to the terminal device.

  With this configuration, it is possible to perform content adaptation processing in accordance with the device information in the content providing device. Thereby, since only the extracted content is transmitted, the bandwidth can be used more effectively.

  Next, the concept of content adaptive conversion according to the present invention will be described with reference to the schematic diagram of FIG.

  The content is composed of at least one content element that is multimedia data such as a document, an image, a video, audio, and voice. This content element has corresponding attribute information. For example, it has attribute information such as summarization when the content element is a document, size and number of colors when it is an image, size and number of colors and bit rate when it is a moving image, and bit rate when it is audio / audio. A plurality of attribute values may be associated with one content element.

  The device information is information indicating the performance of the terminal device that plays back the content, and the CPU type, processing speed, memory capacity, storage device capacity, display size indicating the display capability, and the number of display colors indicating the arithmetic processing capability of the terminal device. The battery capacity information indicating the battery capacity, indicating the communication capacity.

Note that these memory capacity, storage device capacity, and battery capacity may be calculated based on the capacity installed in the terminal device. Alternatively, it may be calculated based on a capacity that can be allocated for content playback, for example, a remaining memory capacity, a remaining storage device capacity, and a remaining battery capacity. Or you may set arbitrary values according to a user's input.

  Or you may use the terminal information of a terminal different from the terminal device which performs a content acquisition request. In this case, it is possible to play back on another terminal device via a network or a portable recording medium such as an SD card or a flash card via the terminal device that has acquired the content.

  The correspondence table is information indicating the correspondence between the device information indicating the performance of the terminal device and the attribute information. The correspondence from the device information to the attribute information may be unique or may correspond to a plurality. Further, a certain division of the device information may be described so as to correspond to the attribute information.

  As shown in FIG. 17, the present invention obtains corresponding attribute information from the device information based on the correspondence table, and extracts matching content elements by matching with attribute information included in the content elements constituting the content. Thus, content for reproduction adapted to the terminal device is generated.

(Embodiment 1)
Hereinafter, the content provision system in Embodiment 1 of this invention is demonstrated, referring drawings.

  FIG. 1 is a configuration diagram of a content providing system according to Embodiment 1 of the present invention. The content providing system 100 includes a content providing device 110, an information processing device 120, and a terminal device 130. Further, the content providing apparatus 110 and the information processing apparatus 120 are connected via a network 140, and the information processing apparatus 120 and the terminal apparatus 130 are connected via a network 150, respectively.

  Next, the overall operation of the content providing system will be described. First, a content request and device information are sent from the terminal device 130 to the information processing device 120 as a message. The information processing device 120 sends the content request received from the terminal device 130 to the content providing device 110 and receives the requested content. On the other hand, the information processing apparatus 120 extracts an adaptive parameter using a correspondence table between device information obtained in advance from the terminal device 130 and content attributes. The received content is adaptively converted based on the extracted adaptation parameter, and the content adapted to the performance of the terminal device 130 is transmitted to the terminal device 130.

  First, the terminal device 130 will be described. The terminal device 130 includes a request input unit 131 that inputs content acquisition request information, a device information storage unit 133 that stores device information, a message transmission unit 132 that transmits a content acquisition request and device information, and an information processing device. A content receiving unit 134 that receives content after adaptive conversion from 120 and a content playback unit 135 that plays back the received content.

  The operation of the terminal device 130 configured as described above will be described below.

  The request input unit 131 is a means for a user to input content request information to the content providing apparatus 110, for example, key input, mouse input, voice input, or the like. User instruction methods include designation of the URL of the content 160 and selection from a list. The request input unit 131 outputs the input content request information to the message transmission unit 132.

The message transmission unit 132 transmits the content request information output by the request input unit 131 and the device information stored in advance by the device information storage unit 133 to the information processing device 120 via the network 150.

  The content receiving unit 134 receives the content 160a obtained by adaptively converting the content 160 transmitted from the content providing device 110 according to the content request information by the information processing device 120, and outputs the content 160a to the content reproducing unit 135.

  The content reproduction unit 135 reproduces the content 160a output from the content reception unit 134.

  The terminal device 130 is assumed to be a stationary terminal such as a PC or a TV, or a mobile terminal such as a mobile phone, a PDA, or a car navigation system, but is not limited thereto.

  The device information stored in the device information storage unit 133 may be set in advance at the time of shipment from the factory, or may be downloaded from a maintenance server provided by a terminal maintenance company, or may be an IC card or CD-ROM. May be input via a recording medium such as a user, may be input by a user with a new input means, or may be dynamically updated by a mechanism such as plug and play.

  In this embodiment, the content acquisition request information and the device information are transmitted simultaneously. However, they may be transmitted individually.

  Note that the terminal device 130 may acquire content directly from the content providing device and transmit device information to the information processing device 120 together with the acquired content.

  Next, the information processing apparatus 120 will be described. The information processing device 120 includes a message receiving unit 121 that receives a content acquisition request and device information from the terminal device 130, a content acquisition unit 122 that acquires content based on the content acquisition request, and a device information acquisition unit that acquires device information. 124, an adaptive parameter extraction unit 125 that extracts adaptive parameters from the received device information and correspondence table 170, a content adaptation processing unit 126 that extracts content elements based on the extracted adaptive parameters, and transmits the content to the terminal device 130. And a correspondence table management unit 123 that updates and manages the correspondence table.

  Next, the operation of the information processing apparatus 120 will be described with reference to the flowchart of FIG.

  The message reception unit 121 receives the received content request information and device information, outputs the received content request information to the content acquisition unit 122, and outputs the device information to the device information acquisition unit 124 (S601). The content acquisition unit 122 transmits the content request information to the content providing apparatus 110, receives the content as a result of the request, and outputs the received content to the content adaptation processing unit 126 (S602).

  Next, the adaptive parameter extraction unit 125 performs content adaptive parameter extraction processing (S603) for extracting content elements using the correspondence table 170 describing the correspondence between the input device information, device information, and attribute information. Details will be described later.

  Next, the content adaptation processing unit 126 performs content adaptation processing (S604) that uses the content adaptation parameter from the adaptation parameter extraction unit 125 to adaptively convert the input content 160 into the content 160a adapted to the terminal information. Details will be described later.

  Next, the content transmission unit 127 transmits the content 160a adaptively converted by the content adaptation processing unit 126 to the terminal device 130 (S605).

  Note that the content acquisition unit 122 may temporarily hold the content acquired by providing a cache.

  The device information acquisition unit 124 may hold device information acquired by providing a cache or a stationary storage unit. In addition, by acquiring and holding device information in advance from a content provider or the like, a configuration that does not require device information transmission from the terminal device may be adopted.

  In addition, only the difference information which shows the difference of the device information which generate | occur | produced with the structure change of the terminal device may be transmitted as the device information to be transmitted.

  Next, the content providing apparatus 110 will be described. The content providing apparatus 110 includes a database 111 that holds the content 160, a request receiving unit 112 that receives a content request of the terminal device 130 via the information processing device 120, a content management unit 113 that acquires content, and content information The content transmitting unit 114 is configured to transmit to the processing device 120.

  An operation of the content providing apparatus 110 configured as described above will be described.

  The request receiving unit 112 receives content request information for requesting the content 160 transmitted from the terminal device 130 via the network 150, the message receiving unit 121 of the information processing device 120, and the network 140. Then, the request reception unit 112 outputs the received content request information to the content management unit 113.

  The content management unit 113 manages the content 160 stored in the database 111. The content management unit 113 receives the content request information output by the request reception unit 112, searches for the corresponding content 160 based on the content request information, and outputs the content 160 to the content transmission unit 114.

  The content transmission unit 114 receives the content 160 output from the content management unit 113 and transmits the content 160 to the information processing apparatus 120 via the network 140.

  Next, using the example of the content 400 in FIGS. 4 to 5, the example of device information in FIG. 15 and the example of the correspondence table shown in FIG. Details of the processing of the processing unit 126 will be described.

  First, the content 400 shown in FIGS. 4 to 5 will be described. The content 400 is a description example using document data and an image as content elements, a document summarization level, an image size, and the number of colors of an image as attribute information. The name space “http://www.foo.co.jp/cdml/” and the schema “http://www.foo.co.jp/cdml.xsd” are respectively designated.

  In the figure, following the HTML root element, “restaurant A” is described in the head tag as the content title.

Next, a plurality of Component elements are described in the body tag that describes the content (403, 406, 409, 413, 416, 419 in the figure). 403 in the figure
, 406, and 409, in the Condition element in the Component element, the document summarization level that is the attribute information of the content element is described as a condition (404, 407, and 410 in the figure), and in the Container element that follows the Condition element Describes documents according to the summarization levels (405, 408, and 411 in the figure). The document summarization level that is attribute information is represented by a Document element in the ContentAttribute element, and the summarization level is specified by the attribute value of the attribute type.

  Next, reference numeral 412 in the figure describes a content element to be displayed regardless of the device information of the terminal device.

  Next, in the Condition element in the Component elements 413, 416, and 419 in the figure, the image size and the number of colors of the image that are the attribute information of the content element are described as conditions (414, 417, 420), in the Container element following the Condition element, links to image data corresponding to the attribute information of each image are described (415, 418, 421 in the figure). The image size and the number of image colors, which are attribute information, are represented by Image elements in the ContentAttribute element, and are specified by attribute values of attribute size and attribute color, respectively.

  As described above, in the content 400 in FIGS. 4 to 5, description examples using document data and images are described as content elements, and attribute information and content elements of the content elements having different attributes are included in the Cdml element, respectively. Multiple sets are described. This content is called CDML (Contents Description Markup Language) content.

  Next, an example of the terminal information shown in FIG. 15 will be described. The terminal information represents the reproduction performance of the terminal device 130. In FIG. 15, XML is used to describe the performance type of the terminal device in the tag element name and the attribute information of the device information in the attribute information corresponding to the tag element. It is a thing. FIG. 15 shows device information “terminal type = PDA”, “display resolution = 640 × 480”, “display color = 16 bits”, “CPU model = CPU-A 400 MHz”, “CPU performance = 722 MIPS”, “memory amount”. = 32 MB ”,“ Storage Device Capacity = 20 GB ”,“ Battery Duration = 120 minutes ”,“ Communication Speed = 12 Mbps ”. In this case, the memory amount, the storage device capacity, and the battery duration are each interpreted as calculation resources of the terminal device 130 that can be allocated for content reproduction.

  Next, the correspondence table shown in FIG. 9 will be described. In the correspondence table 170 of FIG. 9, device information 901 is described in a row, and attribute information 902 of a content element is described in a column. In this example, screen display resolution 903, display color number 904, CPU 905, and memory 906 are described as device information, and document summary level 907, image size 908, and image color number 909 are described as attribute information. .

  Each piece of device information is divided into three stages of ranges (910, 911, 912) according to a set threshold value, and attribute information of content elements is associated in stages for each of the ranges.

For example, with regard to the resolution 903, the document information “Document type =“ full ”” 913 and the image size “Image size =“ large ”” 916 are associated with the device information 910 having a screen display resolution of 800 × 600 or more. In the device information 911 having a display resolution larger than 320 × 240 and less than 800 × 600, the document summarization level “Document type =“ summary ”” 914 and the image size “Image”
size = “medium” ”917 is associated with the device information 912 having a display resolution of 320 × 240 or less, and the document summarization level“ Document type = “keyw”.
"ordlink""915 and image size" Image size = "small""918 are associated with each other. Thus, in the correspondence table 170, each piece of device information is divided into stepped ranges based on a certain threshold value, and attribute values of content elements corresponding to the respective ranges are described. Also, attribute values are omitted for attribute information of content elements that do not depend on device information.

  In this example, the device information and the attribute information are each represented in three stages, but the number of stages is not particularly limited.

  Note that the CPU type of the device information (CPU-A, CPU-B, CPU-C, etc.), processing speed (less than 100 MIPS, 100 MIPS or more and less than 1000 MIPS, 1000 MIPS or more, etc.), remaining storage device (less than 20 Gbytes, 20 Gbytes) Less than 40 GB, 40 GB or more) and the remaining battery level (less than 1 hour, 1 hour to less than 2 hours, 3 hours or more) and attribute information may be described in the correspondence table.

  Next, a case where content processing is performed when the device information shown in FIG. 15 is input to the content 400 shown in FIGS. 4 to 5 will be described using the correspondence table 170 shown in FIG.

  First, the content adaptive parameter extraction process (S603) will be described in detail with reference to the flowchart of FIG. The adaptive parameter extraction unit 125 inputs the correspondence table 170 held by the information processing apparatus 120 (S701). It is determined whether the input correspondence table 170 needs to be updated (S702). Here, it is assumed that the necessity of updating the correspondence table 170 is determined using management information such as the acquisition date and version of the correspondence table 170, and that the correspondence table 170 does not need to be updated. Transition.

  Next, the adaptive parameter extraction unit 125 inputs the device information output by the device information acquisition unit 124 (S704). Then, the attribute information of the content element corresponding to each input device information is extracted using the correspondence table 170 (S705). For example, “display resolution = 640 × 480 corresponds to the range 911 of“ 800 × 600 ”> resolution (X)>“ 320 × 240 ”in the resolution row 903 of the correspondence table 170 in the device information of FIG. , “Document type =“ summary ”” 914 and “Image size =“ medium ”” 917 are selected from the attribute information of the content element. Similarly, attribute information “Image color =“ medium ”” is selected from the device information “display color number = 16 bits”, and attribute information “Document type” is selected from the device information “CPU = 400 MHz” and the memory “32 MB”. = “Summary” ”and“ Image size = “medium” ”are selected.

Next, the adaptive parameter extraction unit 126 determines whether or not the attribute values of the attribute information extracted for each piece of device information match in this way. If they match, one attribute is set for each attribute information of the content element. A value is selected and output to the content adaptation processing unit 126 as a content adaptation parameter (S706). For example, since the attribute value “summary” is selected for all device information in the attribute information, the attribute information “Document type =“ summary ”” is output to the content adaptation processing unit 126 as a content adaptation parameter. To do. Similarly, since the attribute value “medium” is selected as the image size in all device information, the attribute information “Image size =“ medium ”” is output to the content adaptation processing unit 126 as the content adaptation parameter. Since the number of image colors depends only on the number of display colors in the device information, the attribute information “Image color =“ medium ”” is output to the content adaptation processing unit 126 as a content adaptation parameter. On the other hand, if all the attribute values of the extracted attribute information do not match, the lowest attribute value of the extracted attribute information is selected and output to the content adaptation processing unit 126 as a content adaptation parameter (S707). In addition, when all the attribute values of each extracted attribute information do not correspond, although the lowest attribute value was selected among the extracted attribute information, you may determine by majority vote.

  Next, the content adaptation process (S604) will be described in detail with reference to the flowchart of FIG.

  First, the content adaptation processing unit 126 inputs the CDML content 400 shown in FIGS. 4 to 5 acquired from the content providing device 100 by the content acquisition unit 122 in response to a content acquisition request from the terminal device 130 (S801). Next, the content adaptive parameter calculated in the adaptive parameter extraction unit process (S603) is input (S802). Next, the content 400 is analyzed to search for a Cdml element <c: Cdml> (401) which is a root element of CDML (S803). Then, the child node of the Cdml element is searched to determine whether or not there is a child node (S805). Next, it is determined whether the child node is a node in the same name space as Cdml (S806). Since the first child node is <html> (423) and the next is <head> (424), the content 400 determines these nodes as text nodes and outputs them (S807). Then, the process proceeds to S805, where nodes are sequentially searched and the same process is advanced.

  Since the next child node of the content 400 is <c: Component> (426), the condition process of S809 is met, and the process proceeds to S810. Then, it is determined whether the condition described in the Condition element 404, which is a child element of the Component element, matches the input adaptive parameter (S810). Here, the condition described in the content 400 is attribute information <c: Document type = “full” />, and therefore does not match the input content adaptation parameter “Document type =“ summary ””. Therefore, the corresponding <container> child element 405 is skipped, the processing for this Component element is terminated, the process proceeds to S805, the next child node is searched, and the process proceeds.

  Since the next child node of the content 400 is <c: Component> (427) (S805), it is determined whether the content adaptation parameter input in S802 satisfies the conditions described in the Condition element that is a child element of the Component element 407. (S810). Here, since the condition described in the content 400 is attribute information <c: Document type = “summary” />, it matches the input content adaptation parameter “Document type =“ summary ””. Therefore, the description part of “<p> recommendation: ˜ </ p>” which is a child node of the Container element 408 in the Component element 407 is searched and the node is output (S811). Thereafter, the process proceeds to S805, where the next child node is searched and the process proceeds.

  Since the next child node is <c: Component> (428) (S809), it is determined whether the content adaptation parameter input in S802 satisfies the condition described in the Condition element that is a child element of the Component element 410 ( S810). Here, the condition described in the content 400 is attribute information <c: Document type = “keywordlink” />, and therefore does not match the input content adaptation parameter “Document type =“ summary ””. Therefore, the <container> child element 405 corresponding to this Component element 410 is skipped, and the process proceeds to S805 to search for the next child node and proceed with the process.

Then, the next child node “[Address] <br/>” (part of 412) is detected.
The node is determined not to have the same name space as Cdml (S806), and the contents of the node are output (S807). Next, the process proceeds to S805, where the next child node is searched and the process proceeds. The same processing is performed for each node constituting 412.

  Since the next child node is <c: Component> (429) (S809), it is determined whether the content adaptation parameter input in S802 satisfies the condition described in the Condition element that is a child element of the Component element 414 ( S810). Here, since the conditions described in the content 400 are attribute information <c: Image size = “large”, color = “high” />, the input content adaptation parameters “Image size =“ medium ”” and “ Does not match with Image color = “medium”. Therefore, the <container> child element 405 corresponding to this Component element 410 is skipped, and the process proceeds to S805 to search for the next child node and proceed with the process.

  Since the next child node of the content 400 is <c: Component> (430) (S809), it is determined whether the content adaptation parameter input in S802 satisfies the condition described in the Condition element that is a child element of the Component element ( S810). Here, since the conditions described in the content 400 are attribute information <c: Image size = “medium” and color = “medium” />, the input content adaptation parameters “Image size =“ medium ”” and “ Matches Image color = “medium” ”. Accordingly, “<img src =“ http: //www.children.html ”is a child node of the Container element 418 in the Component element 416. fo. co. jp / map_medium. The description part of jpg "/>" is searched and the node is output (S811). Thereafter, the process proceeds to S805, where the next child node is searched and the process proceeds.

  Since the next child node is <c: Component> (431) (S809), the content adaptation processing unit 126 sets the condition described in the Condition element, which is a child element of the Component element 420, in which the content adaptation parameter input in S802 is entered. It is determined whether it is satisfied (S810). Here, since the conditions described in the content 400 are attribute information <c: Image size = “small”, color = “low” />, the input content adaptation parameters “Image size =“ medium ”” and “ Does not match with Image color = “medium”. Accordingly, the <container> child element 405 corresponding to the Component element 410 is skipped, and the process proceeds to S805 to search for the next child node and proceed with the process.

  Since the nodes after the next node of the content 400 are text nodes, all of them are output in S807.

  As a result, the content shown in FIG. 10 is output. Content elements 402, 408, 412 and 418 in FIG. 5 are selected by the device information and output.

Next, the content shown in FIG. 2 will be described. In this example, an image is used as a content element, and an image size is used as attribute information. The description format is the same as in FIGS. In this description, content elements corresponding to image sizes indicating attribute information “large”, “medium”, and “small” are “http://www.foo.co.jp/map_large.jpg”, “http”, respectively. : //Www.foo.co.jp/map_medium.jpg ”,“ http://www.foo.co.jp/map_small.jpg ”. For example, when content extraction is performed using the device information of FIG. 15 and the correspondence table of FIG. 9, “me
“dium” is extracted, the content element “http: // www. foo. co. jp / map_medium. jpg "is extracted.

  Next, the content 300 shown in FIG. 3 will be described. The content 300 is a description example using a document as a content element and a document summarization level as attribute information.

  The description format is the same as in FIGS. This description indicates that the content elements corresponding to the document summarization level indicating attribute information “full”, “summary”, and “keywordlink” are the content element 305, the content element 308, and the content element 311, respectively. For example, when content extraction is performed using the device information in FIG. 15 and the correspondence table in FIG. 9, “summary” is extracted as the adaptation parameter, so the content element 308 that is the corresponding content element is extracted.

  In this example, contents are described in XML. However, the present invention is not limited to these structured description languages.

  Further, when new device information such as communication speed is added from the correspondence table shown in FIG. 9, for example, the correspondence table shown in FIG. 16 is generated and updated to follow this without changing the content. It becomes possible.

  As described above, based on the device information of the terminal device 130, using the correspondence table, the attribute information of the content element associated with the device information is extracted as the content adaptation parameter, the content adaptation parameter is input to the content, the attribute By extracting content elements associated with information, the amount of content description can be reduced as shown in FIG. 13 (a) conventional description and FIG. 13 (b) description according to the present embodiment.

  Furthermore, when it is desired to adapt the content to new device information, the content itself is used as shown in FIG. 14 by using a correspondence table in which the correspondence between the device information of the terminal device and the attribute information of the content element is described. The content can be extracted without correcting the content.

(Embodiment 2)
FIG. 11 is a configuration diagram of a content providing system 1100 according to Embodiment 2 of the present invention. In the second embodiment of the present invention, the information processing device 120 in the first embodiment is provided in a terminal device. In addition, the same code | symbol is provided to the part same as the already demonstrated part, and description is abbreviate | omitted.

  A content providing system 1100 in FIG. 11 includes a content providing device 110 and a terminal device 1101.

  The terminal device 1101 of the content providing system 1100 includes a device information storage unit 1102, a request input unit 131, a message transmission unit 132, a content reproduction unit 135, and content acquisition of the information processing device 120 according to the first embodiment. A unit 122, a cache 123, an adaptive parameter extraction unit 125, a content adaptation processing unit 126, and a correspondence table 170 are provided.

  In the device information storage unit 1102, device information such as arithmetic processing capability, display capability, and communication capability of the terminal device 1101 is stored in advance, and the content acquisition unit 122 receives the content 160, and the content adaptation processing unit 126 Before performing the content adaptation process, the device information is output to the adaptation parameter extraction unit 125.

  The adaptation parameter extraction unit 125 extracts content adaptation parameters based on the device information output from the device information storage unit 1102 and outputs the content adaptation parameters to the content adaptation processing unit 126.

  Then, the content adaptation processing unit 126 receives the content 160 output from the content acquisition unit 122 and the content adaptation parameter output from the adaptation parameter extraction unit 125, and extracts only the content elements corresponding to the content adaptation parameter from the content 160. Is output to the content playback unit 135.

  As described above, the content providing system 1100 according to the second embodiment adopts a form in which the terminal device 1101 performs content adaptation processing. The terminal device 1101 is configured to input content request information from the request input unit 131 and transmit the content request information to the content providing device 110. However, in the second embodiment, it is not necessary to transmit device information. Also, it is possible to deal with a form in which content is unilaterally sent to the terminal device 1101, such as a form of broadcasting.

  The terminal device 1101 is assumed to be a stationary terminal such as a PC or TV, or a mobile terminal such as a mobile phone, a PDA, or a car navigation system, but is not limited thereto.

(Embodiment 3)
FIG. 12 is a configuration diagram of the content providing system 1200 according to Embodiment 3 of the present invention. In the third embodiment of the present invention, the information processing apparatus 120 in the first embodiment is provided in a content providing apparatus. In addition, the same code | symbol is provided to the part same as the already demonstrated part, and description is abbreviate | omitted.

  A content providing system 1200 of FIG. 12 includes a content providing device 1201 and a terminal device 130.

  The content providing apparatus 1201 of the content providing system 1200 includes a database 111, a request receiving unit 112, a content managing unit 1202, a content transmitting unit 114, and a device information acquiring unit of the information processing device 120 according to the first embodiment. 124, an adaptive parameter extraction unit 125, a content adaptation processing unit 126, and a correspondence table 170 are provided.

  The content management unit 1202 receives the content request information received and output by the request reception unit 112, searches the database 111 for the content 160 corresponding to the request information, and outputs the content 160 to the content adaptation processing unit 126.

  Then, the content adaptation processing unit 126 receives the content 160 output from the content management unit 1202 and the content adaptation parameter output from the adaptation parameter extraction unit 125, and extracts only the content elements corresponding to the content adaptation parameter from the content 160. The result content 160 a is output to the content transmission unit 114. Then, the content 160a is transmitted to the terminal device 130 by the content transmitting unit 114.

  As described above, the content providing system 1200 according to the third embodiment adopts a form in which the content providing apparatus 1201 performs content adaptation processing. In this mode, since the content transmitted via the network is only the content 160a extracted according to the device information, the bandwidth can be used more effectively.

The information processing apparatus and the information processing method according to the present invention have an effect that content including elements such as documents and images can be displayed in an appropriate form according to the apparatus information in the terminal apparatus. This is useful as an adaptive conversion process for content described in a description language.

Configuration diagram of a content providing system according to Embodiment 1 of the present invention The figure which shows the example of a description of the content in Embodiment 1 of this invention The figure which shows the example of a description of the content in Embodiment 1 of this invention FIG. 1 is a first diagram illustrating a description example of content according to Embodiment 1 of the present invention; Fig. 2 is a second diagram showing an example of content description according to the first embodiment of the present invention. The figure which shows the processing flow in the information processing apparatus 120 of the content provision system 100 in Embodiment 1 of this invention. The figure which shows the flow of the content adaptation process in the information processing apparatus 120 in Embodiment 1 of this invention. The figure which shows the flow of the adaptive parameter extraction process in the information processing apparatus 120 in Embodiment 1 of this invention. The figure which shows the example of the correspondence table in Embodiment 1 of this invention The figure which shows the content which the content adaptation process part in Embodiment 1 of this invention extracted Configuration diagram of a content providing system in Embodiment 2 of the present invention Configuration diagram of content providing system in Embodiment 3 of the present invention (A) Conceptual diagram of content in the prior art (b) Conceptual diagram of content in the present invention Conceptual diagram of content when new device information is added in the prior art The figure which shows the example of description of the apparatus information in Embodiment 1 of this invention The figure which shows the correspondence table updated in Embodiment 1 of this invention Schematic diagram showing the concept of content adaptive conversion of the present invention

Explanation of symbols

100, 1100, 1200 Content providing system 110, 1201 Content providing device 111 Database 112 Request receiving unit 113, 1202 Content managing unit 114 Content transmitting unit 120 Information processing device 121 Message receiving unit 122 Content acquiring unit 123 Corresponding table managing unit 124 Device information Acquisition unit 125 Adaptive parameter extraction unit 126 Content adaptation processing unit 127 Content transmission unit 128 Corresponding table management unit 130, 1101 Terminal device 131 Request input unit 132 Message transmission unit 133 Device information storage unit 134 Content reception unit 135 Content playback unit 140, 150 Network 160, 160a Contents 170, 170a Correspondence table 180 Correspondence table update server 1102 Device information storage unit 200, 300, 400 Ceiling

Claims (14)

Content for inputting content comprising a device information input unit for inputting device information indicating the performance of the terminal device, a content element which is a management unit of multimedia data, and attribute information of the content element associated with the device information An input unit; a correspondence table storage unit that stores a correspondence table between the device information and the attribute information; an adaptive parameter extraction unit that extracts the corresponding attribute information from the device information as a content adaptation parameter based on the correspondence table; An information processing apparatus comprising: a content adaptation processing unit that extracts the content element associated with the attribute information from the content using the content adaptation parameter. 2. The correspondence table management unit is provided, wherein the correspondence table is acquired from a recording medium supplied from a content provider or a correspondence table update server, and the correspondence table is updated. Information processing device. 3. The information according to claim 1, wherein the attribute information of the content element is associated with at least one of arithmetic processing capability, display capability, communication capability, or battery capability of the terminal device. Processing equipment. The attribute information of the content element is associated with at least one of the CPU type, processing speed, memory capacity, storage device capacity, display size, number of display colors, communication speed, or battery capacity of the terminal device. The information processing apparatus according to claim 3. 5. The information processing apparatus according to claim 1, wherein in the correspondence table, the apparatus information uniquely corresponds to attribute information of the content element. 2. The adaptive parameter extraction unit obtains corresponding attribute information from the device information based on the correspondence table, and selects one attribute value for each attribute information as a content adaptive parameter. The information processing apparatus according to claim 5. The information processing apparatus according to claim 1, wherein the apparatus information is at least one of an arithmetic processing capability, a display capability, a communication capability, or a battery capability of a terminal device. The information processing apparatus according to claim 1, wherein the content element is at least one of a document, an image, a moving image, audio, and link information. The information processing apparatus according to claim 1, wherein at least one of the content and the apparatus information is described in XML. Content for inputting content comprising a device information input step for inputting device information indicating the performance of the terminal device, a content element which is a management unit of multimedia data, and attribute information of the content element associated with the device information An input step; a correspondence table storing step for storing a correspondence table between the device information and the attribute information; an adaptive parameter extracting step for extracting the corresponding attribute information from the device information as a content adaptive parameter based on the correspondence table; And a content adaptation processing step of extracting the content element associated with the attribute information from the content using the content adaptation parameter. A content including a device information input unit that inputs device information indicating the performance of the terminal device, a content element that is a management unit of multimedia data, and attribute information of the content element associated with the device information. An input content input unit; a correspondence table storage unit that stores a correspondence table between the device information and the attribute information; and an adaptive parameter that extracts the attribute information corresponding to the device information based on the correspondence table as a content adaptation parameter An information processing program for causing an extraction unit and a content adaptation processing unit to extract the content element associated with the attribute information from the content using the content adaptation parameter. Content for inputting content comprising a device information input unit for inputting device information indicating the performance of the terminal device, a content element which is a management unit of multimedia data, and attribute information of the content element associated with the device information An input unit; a correspondence table storage unit that stores a correspondence table between the device information and the attribute information; an adaptive parameter extraction unit that extracts the corresponding attribute information from the device information as a content adaptation parameter based on the correspondence table; A content adaptation processing unit that extracts the content element associated with the attribute information from the content using the content adaptation parameter, and a content display unit that displays the extracted content. A terminal device. A content request receiving unit for receiving a content request from a terminal device;
A content management unit that acquires content corresponding to a content request, a device information input unit that inputs device information indicating the performance of the terminal device, a content element that is a management unit of multimedia data, and the device information A content input unit that inputs content including attribute information of the content element, a correspondence table storage unit that stores a correspondence table between the device information and the attribute information, and the device information corresponding to the device information based on the correspondence table An adaptive parameter extracting unit that extracts attribute information as a content adaptive parameter, a content adaptive processing unit that extracts the content element associated with the attribute information from the content using the content adaptive parameter, and the extracted content A content transmission unit for transmitting the message to the terminal device. Content providing apparatus according to claim. A content request receiving step for receiving a content request from a terminal device; a content management step for acquiring content corresponding to the content request; a device information input step for inputting device information indicating the performance of the terminal device; A content input step for inputting content composed of a content element as a management unit and attribute information of the content element associated with the device information, and a correspondence table storage for storing a correspondence table between the device information and the attribute information An adaptive parameter extracting step for extracting the corresponding attribute information from the device information as a content adaptive parameter based on the correspondence table, and the content associated with the attribute information from the content using the content adaptive parameter Extract elements A content adaptive processing step, the content providing method is characterized in that the extracted content; and a content transmission step of transmitting to the terminal device.

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