JP2005149113A - Method and device for distributing content, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To distribute and display content that matches the specifications of the display function of a communication terminal using the content. <P>SOLUTION: A communication terminal 10 sends both content specification information for specifying content and device specification information for specifying the specifications of the display function for displaying the content to a content conversion server 20. The content conversion server 20 obtains from a content holder 30 the content specified by the content specification information, and converts the content into requested content that can be displayed by the display function of the specifications designated by the device specification information. The requested content is sent to the communication terminal 10. The communication terminal 10 receives the requested content and displays or reproduces it. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a method for distributing content on a network in accordance with the specification of the display function of a communication terminal that uses content, a device used to implement the method, and a program for realizing the device on a computer.

  In recent years, with the development of the Internet, various communication terminals that use contents on the Internet have become widespread in addition to personal computers. As a communication terminal capable of displaying content, there are a so-called mobile phone, PDA (Personal Digital Assistant) and the like in addition to a personal computer.

  These communication terminals have display functions according to their types, and each communication terminal obtains and displays content that can be displayed by its own display function from a site on a predetermined network. Yes. Specifically, the mobile phone is configured to acquire and display content from a server on a network provided by a communication carrier (see, for example, Non-Patent Document 1). On the other hand, personal computers and the like obtain and display from sites on the Internet.

In addition, the content received by the communication terminal is generally subjected to processing such as compression in order to reduce the communication load, and the communication terminal receives a content and expands the compressed content, so-called a reproduction codec (here, In the following description, it is also referred to as a program for performing decompression processing), and then the content is displayed. The reproduction codec performed by the communication terminal varies depending on the type of the communication terminal.
"Mobile banking", Chukyo Bank, Ltd. [Searched November 4, 2003], Internet <URL: http://www.chukyo-bank.co.jp/intmado/fram#intmado.htm>

  However, in such conventional content providing technology and content display technology, there is a problem that the content cannot be appropriately displayed except for a communication terminal designated in advance for each content. Specifically, even if the mobile phone receives content that can be displayed on a personal computer, the content cannot be displayed properly due to the limitation of the display function. Further, even if a mobile phone that does not have a playback codec of a personal computer receives compressed content, it cannot be displayed.

  The present invention has been made to solve such a problem, and a content distribution method, a communication terminal, and a content capable of distributing and displaying content that conforms to the display function specifications of the communication terminal that uses the content. A conversion server, a content request program, and a content providing program are provided.

  In view of the above points, the invention according to claim 1 is a content distribution method for distributing content on a network in accordance with the specification of the display function of a communication terminal that uses content, the communication terminal, and content conversion Using a server and a network connecting them, a communication terminal transmits content specification information for specifying content and device specification information for specifying a display function specification for displaying content to the content conversion server. The requested content that is specified by the content specifying information and that can be displayed by the display function of the specification specified by the device specification information is transmitted to the communication terminal, and the communication terminal receives the requested content for display or It is characterized by playing.

  With this configuration, the communication terminal transmits the content specifying information and the device specification information to the content conversion server, and the content conversion server displays the content specified by the content specifying information with the specification display function specified by the device specification information. Since the requested requested content is transmitted to the communication terminal, the desired content can be displayed in accordance with the display function specifications of the communication terminal.

  The invention according to claim 2 is a communication terminal that requests, receives, and displays content from a content conversion server on the network, and inputs content specifying information for specifying the content on the network. An input unit, a request information transmitting unit for transmitting the content specification information and device specification information for specifying a display function specification for displaying content to a content conversion server via a network, and a content specified by the content specification information A content receiving unit that receives the requested content that can be displayed with the display function of the specification specified by the device specification information from the content conversion server via the network, and a content display unit that displays or reproduces the received requested content. It is provided with.

  With this configuration, since the device specification information is transmitted together with the content specifying information input at the input unit, the specification of the display function for displaying the content can be notified to the content conversion server, and only the content specifying information is input. A communication terminal capable of acquiring and displaying content that meets the specifications of the display function can be realized.

  The invention according to claim 3 is a communication terminal that requests, receives, and displays content from a content conversion server on a network, and displays predetermined information stored in an external storage medium. Specifications of a non-contact reading and extracting unit that reads from an external storage medium in a non-contact manner and extracts content specifying information that specifies content on the network included in the read information, and a display function that displays the content specifying information and content Can be displayed with a request information transmission unit that transmits device specification information for specifying the content to the content conversion server via a network, and a display function for the content specified by the content specification information and specified by the device specification information To receive the requested content from the content conversion server via the network A signal unit, characterized in that a display or content display unit for reproducing the requested content thus received.

  With this configuration, in addition to the effect of claim 2, since the non-contact reading and extracting unit that extracts the content specifying information from the external storage medium in a non-contact manner is provided, the operation can be easily performed such as bringing the external storage medium closer to the communication terminal. A communication terminal capable of acquiring and displaying content that meets the specifications of the display function can be realized.

  The invention according to claim 4 is a content conversion server that receives a content request from a communication terminal on a network and distributes content in accordance with the display function of the communication terminal, from the communication terminal via the network. A request information receiving unit for receiving content specification information for specifying the transmitted content on the network and device specification information for specifying the specification of a display function for displaying the content, and the device among the content specified by the content specification information A content determination unit that selects content that matches the specification information, a content acquisition unit that acquires the selected content from the network, and a display function of the specification specified by the device specification information Content conversion unit that converts to the required content , Characterized in that a content transmission unit for transmitting over the network to the communication terminal the requested content.

  With this configuration, the content specifying information and the device specification information are received from the communication terminal, and the requested content that can be displayed with the display function of the specification specified by the device specification information among the content specified by the content specifying information is transmitted to the communication terminal. Therefore, it is possible to realize a content conversion server that can distribute content according to the specifications of the display function of the communication terminal.

  In the content conversion server according to claim 4, the content conversion server according to claim 4 further enables display with a display function of a specification specified by the device specification information in the content acquired by the content acquisition unit. A conversion necessity determining unit that determines whether conversion is necessary for the content conversion unit, and the content conversion unit determines the content acquired by the content acquisition unit when the conversion necessity determination unit determines that the conversion is unnecessary. The requested content is used.

  With this configuration, in addition to the effect of claim 4, a conversion necessity determination unit for determining whether or not content conversion is necessary is provided, so that it is not necessary to perform conversion processing on content that does not require conversion, reducing the processing burden and content. A content conversion server capable of shortening the provision time can be realized.

  According to a sixth aspect of the present invention, there is provided a content request program for realizing a communication terminal for requesting, receiving, and displaying a content from a content conversion server on a network on a computer. An input step for inputting content specifying information for specifying the content above, and a request information transmitting step for transmitting the content specifying information and device specification information for specifying the specifications of the display function for displaying the content to the content conversion server via the network. A content receiving step of receiving the requested content that is specified by the content specifying information and can be displayed with a display function of the specification specified by the device specification information from the content conversion server via the network, and the reception Requested Characterized in that to execute a content display step of displaying or playing the content.

  With this configuration, since the device specification information is transmitted together with the content specifying information, the specification of the display function for displaying the content can be notified to the content conversion server, and the display function specification can be met only by inputting the content specifying information. It is possible to realize a content request program that can acquire and display the content.

  The invention according to claim 7 is a content providing program for realizing on a computer a content conversion server that receives a content request from a communication terminal on a network and distributes content in accordance with the display function of the communication terminal. Request information receiving step for receiving content specification information for specifying the content on the network transmitted from the communication terminal via the network and device specification information for specifying the display function specification for displaying the content to the computer; A content determination step of selecting content that matches the device specification information among the content specified by the content specification information, a content acquisition step of acquiring the selected content from the network, and the acquired content as the device specification information Accordingly, characterized in that to execute a content conversion step of converting into a displayable request content display function specifications identified, and a content transmission step of transmitting the requested content to the communication terminal via the network.

  With this configuration, the content specifying information and the device specification information are received from the communication terminal, and the requested content that can be displayed with the display function of the specification specified by the device specification information among the content specified by the content specifying information is transmitted to the communication terminal. Therefore, it is possible to realize a content providing program capable of distributing content according to the specification of the display function of the communication terminal.

  As described above, the present invention transmits the device specification information together with the content specifying information from the communication terminal, and the specification specified by the device specification information among the content specified by the content specifying information by the content conversion server. Content transmission method, communication terminal, content conversion server, and content capable of displaying or playing back desired content that meets the specifications of the display function of the communication terminal in order to transmit the requested content that can be displayed with the display function of A request program and a content providing program can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 shows an entire communication system that implements the method of the present invention. In the figure, 10 is a plurality of communication terminals (# 1, # 2,... #N), 20 is a content conversion server, 30 is a content holder, Reference numeral 40 denotes a network that connects these devices so that they can communicate with each other. Here, the content holder 30 is a server that holds content requested by the communication terminal 10. The network 40 may be wired, wireless, or a combination thereof.

  When a content request is transmitted from the communication terminal 10 to the network 40, the content conversion server 20 receives this request, acquires the requested content from the content holder 30, and performs predetermined processing to transmit it to the communication terminal 10. It is supposed to be.

  FIG. 2 is a block diagram showing a communication terminal according to the first embodiment of the present invention.

  In FIG. 2, the communication terminal 10 specifies an input unit 11 for inputting content specifying information for specifying content on the network, content specifying information input via the input unit 11, and a specification of a display function for displaying the content. Request information transmitting unit 12 that transmits the device specification information to the content conversion server 20 via the network, and a request that can be displayed by the display function of the content specified by the content specification information and specified by the device specification information A content receiving unit 13 that receives content from a content conversion server via a network and a content display unit 14 that displays or reproduces the requested content received by the content receiving unit 13 are provided.

  Here, the input unit 11 includes, for example, a keyboard, a pointing device, and other input means, and can input at least content specifying information. The content display unit 14 is configured by display means having, for example, a liquid crystal screen and the like, and can display content with display function specifications.

  FIG. 3 shows an example of a specific circuit of the communication terminal 10 according to the first embodiment.

  Here, the input unit 11 in FIG. 3 includes an operation unit 111 including a pointing device such as a touch pad, a pointing stick, and a trackball, a keyboard, and the like. Further, the content display unit 14 in FIG. 3 includes a display 141 having a liquid crystal screen or the like.

  The request information transmitting unit 12 and the content receiving unit 13 in FIG. 3 are a CPU (Central Processing Unit) 121 that performs data processing and control, an OS (Operating System), a ROM that stores other programs, control data, and the like. Read Only Memory (122), RAM (Random Access Memory) 123 for storing programs and data used by the CPU 121, EEPROM (Electrically Erasable Programmable ROM) 124 for storing application software and predetermined data in a nonvolatile and rewritable manner, and a network. The communication interface 125 is used for communication.

  In this configuration, the content specifying information and device specification information are transmitted to the content conversion server 20 on the network 40 via the communication interface 125, and the content transmitted from the content conversion server 20 on the network 40 is received. The CPU 121 may also control each part of the communication terminal 10 using the ROM 122, RAM 123, EEPROM 124, and the like.

  Here, specific examples of the content specifying information include a URL (Uniform Resource Locator), a URN (Uniform Resource Name), and a URI (Uniform Resource Identifier) on the Internet. The device specification information includes the presence / absence of a display, the screen size such as the display screen resolution, the number of pixels, the number of displayable colors, the number of displayable gradations, the CPU capability, the presence / absence of a playback codec, and the type of playback codec. Specific examples include communication speed.

  Here, if the processing speed is taken up as the capability of the CPU, the processing speed for displaying a moving image may not be obtained if the processing speed is slow. Also, if you do not have the required playback codec, the playback codec is a program for performing data processing that decompresses and plays back content, so image data cannot be decompressed, and content can be displayed and audio can be played back. There are cases where you cannot do it. Similarly, a terminal having a low communication speed may be interrupted or may be displayed slowly if the voice or image data has a large capacity.

  FIG. 4 is a block diagram showing the content conversion server according to the first embodiment of the present invention.

  In FIG. 4, the content conversion server 20 includes a request information receiving unit 21 that receives the content specifying information and device specification information transmitted from the communication terminal 10 via the network, and an apparatus among the contents specified by the content specifying information. A content determination unit 22 that selects content that matches the specification information, a content acquisition unit 23 that acquires the selected content from the network 40 (more precisely, the content holder 30 on the network 40), and the acquired content as a device A content conversion unit 23 that converts to a requested content that can be displayed by a display function of the specification specified by the specification information, and a content transmission unit 24 that transmits the requested content to the communication terminal 10 via the network are provided.

  FIG. 5 shows an example of a specific circuit of the content conversion server 20 according to the first embodiment.

  Here, the request information reception unit 21, the content acquisition unit 23, and the content transmission unit 25 in FIG. 4 are configured by a communication interface 211. The content determination unit 22 and the content conversion unit 24 include a CPU 221 that performs data processing and control, a ROM 222 that stores an OS and other programs, control data, and the like, a RAM 223 that stores programs and data used by the CPU 221, and applications. It is configured by an EEPROM 224 that stores software and predetermined data in a nonvolatile and rewritable manner.

  Further, in the configuration shown in FIG. 5, in addition to the request information reception unit 21, the content determination unit 22, the content acquisition unit 23, the content conversion unit 24, and the content transmission unit 25 in FIG. A display 202 for displaying the output from the operation means 201 and the content conversion unit 24 is provided.

  Here, specific examples of the determination (selection) performed by the content determination unit 22 include the following. For example, when the communication speed is insufficient, content having the same content is selected at a lower rate than the specified content. When a moving image content is selected when there is no reproduction codec, a still image thumbnail is selected. If the CPU has insufficient capabilities, a still image is selected or a lower rate content is selected than a moving image. Of course, if the specified content matches the device specification, the specified content itself is acquired.

  Specific examples of conversion performed by the content conversion unit 24 include the following.

  First, if the size of the display screen is insufficient, the font size is reduced to reduce the character, the image is thinned out to reduce the image, and the conversion that removes the tag that is not necessary is performed. (Hereinafter, processing for converting content is simply referred to as “conversion processing”). On the other hand, when the display screen is large, conversion processing such as enlarging the character by enlarging the font size and enlarging the image by interpolation or the like is performed.

  If the aspect ratio of the displayed content does not match the aspect ratio of the display screen, the aspect ratio is converted by inserting a line feed or the like in the content to increase the degree of coincidence of the aspect ratio. Characters in a form that cannot be displayed due to model dependence are prevented from being garbled or the like by changing to characters or standard characters possessed by models requesting content. Also, when the CPU processing speed is slow, conversion processing such as conversion from a moving image to a still image or reduction of the number of frames to be displayed by thinning out image frames is performed.

  When content described in HTML (Hyper Text Markup Language) cannot be displayed, it may be converted into content described in a language suitable for the specifications of the terminal such as CMDL (Communication Machine Definition Language). If the page itself cannot be displayed in view of the presence or absence of the display, memory capacity, or other specifications, only the information part that is easy to display such as the link destination or text data is extracted and displayed.

  Note that the conversion processing performed by the content conversion unit 24 is not limited to the above-described one, and all of the contents for enabling the display of the content or more appropriately displaying the content in the communication terminal that requests the content. Conversion processing is included.

  The CPU 221 may also control each part of the content conversion server 20 using the ROM 222, the RAM 223, the EEPROM 224, and the like. Specifically, the communication interface 211 controls the communication to realize the functions of the request information reception unit 21, the content acquisition unit 23, and the content transmission unit 25, and the information input via the operation unit 201 and the output from the CPU 221. It is also possible to perform control such as displaying the displayed information on the display 202.

  FIG. 6 is a sequence diagram for explaining the operations of the communication terminal 10 and the content conversion server 20 according to the first embodiment of the present invention. Hereinafter, the communication according to the first embodiment of the present invention will be described in accordance with this sequence diagram. Operations of the terminal 10 and the content conversion server 20 will be described.

  First, the communication terminal 10 inputs content specifying information via the input unit 11 (S1). The content specification information input in step S1 and the device specification information stored in advance in the storage device (ROM 122 or EEPROM 124) in the communication terminal 10 are transmitted to the content conversion server 20 by the request information transmission unit 12 (S2).

  The content specifying information and device specification information transmitted from the communication terminal 10 in step S2 are received by the request information receiving unit 21 of the content conversion server 20, and the content is specified by the content determining unit 22 (S3). Then, the content specified by the content determination unit 22 is requested to the content holder 30 by the content acquisition unit 23 (S4).

  Thereafter, the content requested in step S4 is transmitted from the content holder 30 and received by the content acquisition unit 23 of the content conversion server 20 (S5). The content received by the content acquisition unit 23 in step S5 is subjected to the above-described conversion processing by the content conversion unit 24 and converted into the requested content (S6). The requested content obtained by the conversion in step S6 is transmitted to the communication terminal 10 by the content transmission unit 25 (S7).

  The requested content transmitted from the content conversion server 20 in step S7 is received by the content receiving unit 13 of the communication terminal 10 and subjected to predetermined image processing such as a reproduction codec (S8). The requested content subjected to the image processing in step S8 is displayed by the content display unit 14 (S9).

  As described above, since the communication terminal according to the first embodiment transmits the device specification information together with the content specifying information input by the input unit, the specification of the display function for displaying the content is set as the content conversion server. The content that meets the specifications of the display function can be acquired and displayed simply by inputting the content specifying information.

  The content conversion server according to the first embodiment receives the content specifying information and the device specification information from the communication terminal, and displays the specification specified by the device specification information among the content specified by the content specifying information. Since the requested content that can be displayed in the communication terminal is transmitted to the communication terminal, it is possible to distribute the content according to the specification of the display function of the communication terminal, and to save the trouble of preparing the content that is properly displayed on the communication terminal having a different display function be able to.

  In the first embodiment, the content requesting operation for performing the processing in each of the above steps S1, S2, and S7 to S9 using the communication terminal has been described. However, these steps S1, S2, and S7 to It is also possible to use a predetermined computer in which a content request program for executing the content request operation including S9 is installed.

  In the first embodiment, the content providing operation for performing the processing in each of the above steps S2 to S7 using the content conversion server has been described. However, the content providing operation including these steps S2 to S7 is performed. It is also possible to implement using a predetermined computer in which a content providing program for execution is installed.

(Second Embodiment)
FIG. 7 is a communication terminal according to the second embodiment of the present invention, in this case the content identification information is extracted from an external storage medium in a contactless manner instead of the request information input unit in the communication terminal according to the first embodiment. The example which provided the non-contact reading extraction part to perform is shown. That is, in the drawing, reference numeral 15 denotes a non-contact reading extraction unit, which reads predetermined information stored in the external storage medium 50 from the external storage medium 50 in a non-contact manner, and includes a network (see FIG. The content specifying information for specifying the content on the network 40) shown in FIG.

  In the communication terminal according to the second embodiment of the present invention, for example, 10b, the same components as those of the communication terminal 10 according to the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  FIG. 8 shows an example of a specific circuit of the communication terminal 10b according to the second embodiment.

  7 is configured by a reader / writer 151 that performs non-contact communication when the external storage medium 50 is a non-contact IC card. The reader / writer 151 is a communication unit that supplies power to the contactless IC card 50 via electromagnetic waves, communicates, and receives predetermined information held by the contactless IC card 50 in a contactless manner.

  The operation unit 101 is a unit such as a keyboard for operating the communication terminal 10b. The operation unit 101 may be configured similarly to the operation unit 111 in the first embodiment shown in FIG. It is assumed that the content specifying information is input mainly via the reader / writer 151, not the essential configuration requirement for input. The same components as those of the specific circuit shown in FIG. 3 are denoted by the same reference numerals, and the description thereof is omitted.

  FIG. 9 is a sequence diagram for explaining the operation of the communication terminal 10b according to the second embodiment, and hereinafter, the operation of the communication terminal 10b according to the second embodiment of the present invention will be described. Note that the content specifying information is input by reading information stored in the external storage medium 50 by the non-contact reading and extracting unit 15.

  First, the communication terminal 10b causes the non-contact reading / extracting unit 15 to read predetermined information stored in the external storage medium 50 from the external storage medium 50 in a non-contact manner, and content specifying information included in the read information Is extracted (S11). If the content reading information is not included in the information read from the external storage medium 50, the process in step S11 is repeated.

  When the content specifying information is extracted in step S11, the processing in each step after step S2 for transmitting the extracted content specifying information and device specification information to the content conversion server 20 is performed. In step S9, the requested content is displayed in the content display unit 14. Is displayed.

  In addition, since the process in each step from step S2 to S9 is the same as the process in the step which attached | subjected the same code | symbol in 1st Embodiment, the description is abbreviate | omitted.

  As described above, according to the communication terminal according to the second embodiment, in addition to the effect of the communication terminal according to the first embodiment, the content specifying information is extracted from the external storage medium in a contactless manner. Since the contact reading and extracting unit is provided, it is possible to acquire and display content that meets the specifications of the display function by an easy operation such as bringing an external storage medium close to the communication terminal.

(Third embodiment)
FIG. 10 shows an example in which a content conversion server according to the third embodiment of the present invention, here, a content conversion server according to the first embodiment is added with a determination unit for determining the necessity of content conversion. That is, in the figure, reference numeral 26 denotes a conversion necessity determination unit, which determines whether conversion is required to enable display with the display function of the specification specified by the device specification information in the content acquired by the content acquisition unit 23. The result is output to the content conversion unit 24.

  Note that, in the content conversion server according to the third embodiment of the present invention, for example, 20b, the same components as those of the content conversion server 20 according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The specific circuit of the content conversion server 20b according to the third embodiment may be as shown in FIG. Here, the content determination unit 22, the content conversion unit 23, and the conversion necessity determination unit 26 are a CPU 221 that performs data processing and control, a ROM 222 that stores an OS and other programs, control data, and the like, a program used by the CPU 221, A RAM 223 for storing data and the like, and an EEPROM 224 for storing application software and predetermined data in a nonvolatile and rewritable manner are included. The function of the conversion necessity determination unit 26 is realized by the CPU 221 based on programs and data stored in the ROM 222 and the EEPROM 224.

  When the content specified by the content specifying information is received, the conversion necessity determination unit 26 can display the received content on the communication terminals 10 and 10b that requested the content without conversion performed by the content conversion unit 24. Is determined based on the device specification information. Specifically, the presence / absence of a display, display screen resolution, number of pixels, etc. specified by the device specification information, the number of displayable colors, the number of displayable gradations, the CPU capability, the presence / absence of a playback codec Alternatively, it may be determined whether or not the content received from the content holder 30 can be displayed based on the specification of the display function such as the type of the reproduction codec.

  FIG. 11 is a sequence diagram for explaining the operation of the content conversion server 20b according to the third embodiment. Hereinafter, the operation of the content conversion server 20b according to the third embodiment of the present invention will be described. To do.

  First, the processes from step S1 to S5 with the same reference numerals in the first embodiment are performed, and the content specified by the content specifying information is received by the content conversion server 20b. It should be noted that instead of the processing in step S1, the processing in step S11 in the second embodiment is performed so that content specifying information held in an external storage medium such as a non-contact IC card is input. good.

  For the content received by the content acquisition unit 23 in step S5, the necessity of conversion processing by the content conversion unit 24 is determined by the conversion necessity determination unit 26 (S21). If it is determined in step S21 that the conversion process by the content conversion unit 24 is necessary, the process after step S6 for performing the conversion process on the content is performed, and if the conversion process by the content conversion unit 24 is determined to be unnecessary, the step The processing after step S7 is performed in which the content transmission unit 25 transmits to the communication terminal 10 (or the communication terminal 10b according to the second embodiment) using the content received by the content acquisition unit 23 in S5 as the requested content. .

  As described above, the content conversion server according to the third embodiment includes a conversion necessity determination unit that determines whether or not content conversion is necessary in addition to the effects of the content conversion server according to the first embodiment. Therefore, it is not necessary to perform conversion processing on content that does not require conversion, and the processing burden can be reduced and the content provision time can be shortened.

  A content distribution method, a communication terminal, a content conversion server, a content request program, and a content providing program according to the present invention transmit information about a display function specification of a terminal that uses content to a server that provides the content. It has the effect that desired content can be displayed according to the terminal, and can also be applied to uses such as devices and programs that request or supply content on a network.

The block block diagram which shows the whole communication system which implements the method of this invention The block block diagram which shows the communication terminal which concerns on the 1st Embodiment of this invention The block diagram which shows an example of the specific circuit of the communication terminal which concerns on 1st Embodiment The block block diagram which shows the content conversion server which concerns on the 1st Embodiment of this invention The block diagram which shows an example of the specific circuit of the content conversion server which concerns on 1st Embodiment Sequence diagram for explaining content requesting operation and content providing operation in a system including a communication terminal and a content conversion server according to the first embodiment The block block diagram which shows the communication terminal which concerns on the 2nd Embodiment of this invention. The block diagram which shows an example of the concrete circuit of the communication terminal which concerns on 2nd Embodiment Sequence diagram for explaining a content requesting operation and a content providing operation in a system including a communication terminal according to the second embodiment The block block diagram which shows the content conversion server which concerns on the 3rd Embodiment of this invention. Sequence diagram for explaining a content requesting operation and a content providing operation in a system including a content conversion server according to the third embodiment

Explanation of symbols

  10, 10b: Communication terminal, 11: Input unit, 12: Request information transmission unit, 13: Content reception unit, 14: Content display unit, 15: Non-contact reading extraction unit, 20, 20b: Content conversion server, 21: Request Information receiving unit, 22: content determination unit, 23: content acquisition unit, 24: content conversion unit, 25: content transmission unit, 26: conversion necessity determination unit, 30: content holder, 40: network, 50: external storage Medium, 101, 111, 201: operation means, 121, 221: CPU, 122, 222: ROM, 123, 223: RAM, 124, 224: EEPROM, 125, 211: communication interface, 141, 202: display, 151: Reader / writer.

Claims (7)

A content distribution method for distributing content on a network in accordance with the specifications of the display function of a communication terminal that uses content,
Using a communication terminal, a content conversion server, and a network connecting them,
The communication terminal transmits content specification information for specifying the content and device specification information for specifying the specification of the display function for displaying the content to the content conversion server,
The content conversion server transmits the requested content that is the content specified by the content specifying information and can be displayed with the display function of the specification specified by the device specification information to the communication terminal,
A content distribution method in which a communication terminal receives, displays, or reproduces requested content. A communication terminal that requests, receives, and displays content from a content conversion server on a network,
An input unit for inputting content specifying information for specifying content on the network;
A request information transmission unit for transmitting the content specification information and device specification information for specifying the specification of a display function for displaying content to a content conversion server via a network;
A content receiving unit that receives the requested content that is specified by the content specifying information and can be displayed with a display function of the specification specified by the device specification information from the content conversion server via a network;
A communication terminal comprising: a content display unit that displays or reproduces the received requested content. A communication terminal that requests, receives, and displays content from a content conversion server on a network,
A non-contact reading and extracting unit that reads predetermined information stored in an external storage medium in a non-contact manner from the external storage medium, and extracts content specifying information that specifies content on the network included in the read information;
A request information transmission unit for transmitting the content specification information and device specification information for specifying the specification of a display function for displaying content to a content conversion server via a network;
A content receiving unit that receives the requested content that is specified by the content specifying information and can be displayed with a display function of the specification specified by the device specification information from the content conversion server via a network;
A communication terminal comprising: a content display unit that displays or reproduces the received requested content. A content conversion server that receives a content request from a communication terminal on a network and distributes content that matches the display function of the communication terminal,
A request information receiving unit for receiving content specification information for specifying content on the network transmitted from the communication terminal via the network and device specification information for specifying the specification of a display function for displaying the content;
A content determination unit that selects content that matches the device specification information from among the content specified by the content specifying information;
A content acquisition unit for acquiring the selected content from a network;
A content conversion unit that converts the acquired content into requested content that can be displayed with a display function of a specification specified by the device specification information;
A content conversion server comprising: a content transmission unit configured to transmit the requested content to the communication terminal via a network. The content conversion server according to claim 4,
Furthermore, the content acquired by the content acquisition unit includes a conversion necessity determination unit that determines whether conversion is required for display with the display function of the specification specified by the device specification information,
The content conversion server, wherein the content conversion unit determines that the content acquired by the content acquisition unit is the requested content when the conversion necessity determination unit determines that the conversion is unnecessary. A content request program for requesting, receiving, and displaying a content from a content conversion server on a network on a computer.
On the computer,
An input step for inputting content specifying information for specifying content on the network;
A request information transmission step of transmitting the content specification information and device specification information for specifying a specification of a display function for displaying content to a content conversion server via a network;
A content receiving step of receiving requested content that is specified by the content specifying information and can be displayed with a display function of a specification specified by the device specification information from a content conversion server via a network;
A content requesting program for executing the content display step of displaying or reproducing the received requested content. A content providing program for realizing on a computer a content conversion server that receives a content request from a communication terminal on a network and distributes content that matches the display function of the communication terminal,
On the computer,
A request information receiving step for receiving content specification information for specifying content on the network transmitted from the communication terminal via the network and device specification information for specifying the specification of a display function for displaying the content;
A content determination step of selecting content that matches the device specification information from among the content specified by the content specifying information;
A content acquisition step of acquiring the selected content from a network;
A content conversion step of converting the acquired content into requested content that can be displayed with a display function of a specification specified by the device specification information;
And a content transmission step of transmitting the requested content to the communication terminal via a network.

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