JP4413655B2 - Content browsing system, communication control unit, portable communication terminal, and content browsing method - Google Patents

Description

  The present invention relates to a content browsing system, a communication control unit, a mobile communication terminal, and a content for browsing content data in a page format such as HTML distributed from a content server arranged on a communication network such as the Internet. It relates to browsing methods.

  2. Description of the Related Art Conventionally, a technique for browsing a site page distributed from a content server arranged on a communication network such as the Internet by using a browser function built in a communication terminal such as a mobile phone or a PDA has been developed. This site page is usually in a page format such as HTML (Hyper Text Markup Language), which is linked to each other, and the page can be changed by following this link.

  However, when using the browser function on a mobile communication terminal such as a mobile phone, it takes time to view one page because the downlink transfer rate is still not sufficient compared to wired due to the wireless nature. There are many. For this reason, it is common to have a so-called cache function that saves a page once viewed in the memory inside the mobile phone and refers to it when browsing again to increase the speed. .

  However, with the conventional cache function described above, it is impossible for the mobile phone to determine when the content of the page being viewed is updated, so normally the cache is referenced only when the back button is pressed and returned. In all other cases, it is common to download everything in the same way as normal processing. Therefore, since the download is paid, the user has to pay for the packet even though the user is browsing the same page.

On the other hand, for example, there is a technique disclosed in Patent Document 1. According to the technique disclosed in Patent Document 1, web data cached on the mobile terminal side is analyzed, update areas and non-update areas designated in advance in the web data are determined, and update area data is determined. Only from the web server. As a result, the amount of data downloaded from the server is reduced to reduce the traffic load and the processing on the terminal side.
JP 2003-162472 A

  However, in the technique disclosed in Patent Document 1 described above, when creating web data, a non-update area and an update area must be designated in advance, and there is a possibility that production and update of web data may be restricted. There is. Furthermore, in this technique, since the presence or absence of the non-update area is processed on the mobile terminal side, there is a problem that the processing load becomes excessive.

  Therefore, the present invention has been made in view of the above points, and when browsing a page stored in a cache during browsing on a mobile phone with a browser function, data transmission of a portion related to update is performed on the network side. Content browsing system, communication control unit, mobile communication terminal, and content browsing method capable of determining necessity and extracting configuration data related to transmission, reducing the amount of downlink data, and reducing the processing load on the mobile terminal side The issue is to provide

In order to solve the above-described problem, the present invention is directed to a page of content in a page format distributed from a content server on a communication network by a storage presence / absence determination unit in an operation unit of the mobile communication terminal. By comparing the URL corresponding to the transition operation and the URL of the content stored in the memory, it is determined whether or not the content corresponding to the page transition operation of the operation unit is stored in the memory, and the storage When the presence / absence determining unit determines that the content corresponding to the page transition operation of the operation unit is not stored in the memory, the transmission request unit of the mobile communication terminal is provided with communication control provided on the communication network. The URL of the content corresponding to the page transition is transmitted to the unit, and the content corresponding to the page transition When a distribution request is made and it is determined that the content corresponding to the page transition operation of the operation unit is stored in the memory, the URL of the content stored in the memory is set to the communication control unit. Send.
  In addition, the file information transmission unit transmits the URL of the content stored in the memory to the communication control unit by the transmission request unit, and the time when the content transmitted from the communication control unit was last updated. The update time is received, the update time is compared with the time stamp of each file included in the content stored in the memory, and file information indicating a file whose time stamp is older than the update time is obtained. The URL of the content is included and transmitted to the communication control unit.
  Further, the data composition unit transmits the file information to the communication control unit from the file information transmission unit, so that the file of text data transmitted from the communication control unit and / or the communication control The composition data indicating the difference between the image file or the video file transmitted from the unit is combined with the content stored in the memory, and the output processing unit performs page transition of the operation unit by the storage presence / absence determining unit. When it is determined that the content corresponding to the operation is not stored in the memory, the URL of the content related to the page transition is transmitted to the communication control unit, and the content of the content related to the page transition is also transmitted. Corresponds to the page transition operation of the operation unit sent from the communication control unit by the delivery request That outputs the content, or outputs the synthesized contents in the data synthesis section.

According to the present invention, in order to solve the above-mentioned problem, in the communication control unit provided on the communication network, the normal processing unit is a content corresponding to the page transition from the transmission request unit of the portable communication terminal. When the distribution request is made, the content corresponding to the page transition is acquired from the content server on the communication network based on the URL transmitted together with the distribution request, transmitted to the mobile communication terminal, and updated. When the time transmission unit receives the URL of the content stored in the memory from the transmission request unit of the mobile communication terminal, the update time of the content corresponding to the URL is received from each content server on the communication network. The mobile phone detects the URL and update time of each content being distributed from the stored database. And transmits it to the signal terminal.
  When the transmission information control unit transmits the update time from the update time transmission unit, the content corresponding to the URL included in the file information transmitted from the file information transmission unit of the mobile communication terminal is displayed. Of the files constituting the obtained content acquired from the content server, the text data file is transmitted to the mobile communication terminal as it is, and the files constituting the acquired content other than the text data It is determined whether the image file or the video file is a file corresponding to the file indicated by the file information received from the portable communication terminal, and the file indicated by the file information received from the portable communication terminal. If it is determined that the file does not correspond to Or the video file is transmitted to the mobile communication terminal as it is, and if it is determined that the file corresponds to the file indicated by the file information received from the mobile communication terminal, the file information corresponds to the file information. When it is determined whether an image file or a video file has been updated, and it is determined that the image file or the video file corresponding to the file information has not been updated, the image file corresponding to the file information or When the video file is discarded, it is not transmitted to the mobile communication terminal, and if it is determined that the image file or video file corresponding to the file information has been updated, the data before and after the update The configuration data indicating the difference is formed and transmitted to the mobile communication terminal.

  According to the present invention, the content data once viewed on the mobile communication terminal side is cached in the memory device, and it is determined whether the content data related to browsing is cached at the next browsing. If necessary, download only the necessary files by sending file information that describes the information of the necessary files such as the cached content data and the URL (data identifier) of the files that make up the content data to the server. can do.

  As a result, according to the present invention, when the cached data is used, information is mutually exchanged between the mobile communication terminal and the communication network, and the cached data is used as it is, or only necessary data is newly used. It is possible to determine whether or not to download data, so that the amount of data to be downloaded can be reduced, and adverse effects caused by using old cache data can be avoided.

In addition, in order to solve the above-described problem, the present invention stores the cache time at which the content data is acquired together with the content and the URL of the content in the memory of the mobile communication terminal, When the transmission request unit of the mobile communication terminal determines that the content corresponding to the page transition operation of the operation unit is stored in the memory in the step, the transmission request unit of the content stored in the memory It is determined whether or not an elapsed time from the cache time has passed a predetermined time, and if it is determined that the elapsed time has not passed the predetermined time, communication control provided on the communication network The URL of the content corresponding to the page transition is transmitted to the unit, and the content corresponding to the page transition is transmitted. Performs signal request, the elapsed time when it is determined that those older than a predetermined time, transmits to the communication control unit, the URL of the content stored in the memory.

  In this case, by managing the cache time, it becomes possible to determine whether or not to use the cached data according to the elapsed time from the time when the previous data was downloaded, and the file information is transmitted. By making a determination as to whether or not to do so, transmission and reception of unnecessary data can be omitted.

  In the above invention, image, video or audio file data included in the content data stored in the memory device is extracted as configuration data, and the data identifier of the extracted file data is included in the file information and transmitted. Is preferred.

  In this case, avoid re-downloading of image, video, and audio files that tend to increase in file size, and give priority only to other data, such as text files that are frequently updated and have a small data size. Control such as re-downloading becomes possible. As a result, it is possible to prevent frequent re-downloading of data having a large file size.

  In the above invention, the cache time at which the content data or the configuration data stored in the memory device is acquired is acquired, the update time of the content data or the configuration data related to the page transition is acquired, the cache time, the update time, It is preferable that content data or configuration data is extracted based on the comparison result, and information specifying the extracted content data or configuration data is included in the file information and transmitted.

  In this case, by comparing the update time on the server side with the cache time on the mobile terminal side, it is possible to prevent re-downloading of files that have not been updated after the previous cache, which is unnecessary Data transmission / reception can be omitted.

In addition, in order to solve the above-described problem, the present invention, together with the content, the URL of the content, and the cache time at which the content data is acquired, is stored in the memory of the mobile communication terminal. The transmission request unit of the mobile communication terminal stores the content corresponding to the page transition operation of the operation unit when the content is stored in the memory. Whether the elapsed time of the content from the cache time has passed a predetermined time or more, and whether the importance of the content stored in the memory is higher than a predetermined threshold. It is determined that the elapsed time has not passed the predetermined time, and the importance is determined not to be higher than a predetermined threshold. In this case, the URL of the content corresponding to the page transition is transmitted to the communication control unit provided on the communication network, and the distribution request for the content corresponding to the page transition is made. Content that is stored in the memory for the communication control unit when it is determined that the predetermined time or more has elapsed, or when the importance is determined to be greater than or equal to a predetermined threshold URL is sent.

  In this case, only important files can be downloaded again, and unnecessary data transmission / reception can be omitted. The importance level and threshold value may be arbitrarily set by the user, or may be set in advance for each content data on the server side.

  As described above, according to the content browsing system, the communication control unit, the mobile communication terminal, and the content browsing method of the present invention, when browsing a page stored in a cache during browsing on a mobile phone with a browser function, It is possible to determine the necessity of data transmission for the part related to the update on the network side and extract the configuration data related to the transmission, thereby reducing the amount of downlink data and reducing the processing load on the mobile terminal side.

(Content browsing system configuration)
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram of a content browsing system according to the present embodiment.

  As shown in the figure, the content browsing system according to the present embodiment includes a communication control provided in a mobile communication terminal 1 used by a user and a radio base station 21 that performs radio communication with the mobile communication terminal 1. Unit 2, control unit 3 connected to communication control unit 2 and connectable to communication network 4, and content server 5 that distributes content through communication network 4.

  The content server 5 is a Web server that transmits and receives data using an Internet protocol or the like and distributes data such as an HTML file. The content server 5 is distributed in plural on the communication network 4 and is configured by a domain unique to each server and a file address. The data specified by the specified URL is distributed.

  The control unit 3 includes a data transmission / reception unit 31 that relays data between the communication control unit 2 and the communication network 4, and a data determination unit 32 that determines data related to the relay.

  The data determination unit 32 acquires the file information transmitted from the mobile communication terminal 1 in the communication network 4, extracts configuration data constituting the content data related to page transition based on the file information, and It is a module that instructs the mobile communication terminal 1 to transmit from the server 5. The data determination unit 32 includes a database that stores table data T2 in which the URL, update time, importance, and the like of content data distributed by each content server are described.

  The mobile communication terminal 1 is a terminal that performs wireless communication such as TDMA, CDMA, and PHS, and has a data communication function in addition to a call function. The mobile communication terminal 1 includes a mobile terminal such as a PDA.

  Specifically, the mobile communication terminal 1 includes a communication control unit 6 that performs radio communication with the radio base station 21, a key 91 that is a user interface, a display device 92 such as a liquid crystal monitor, and a speaker 93 that outputs sound. And a memory 8 that is a storage device, and a CPU 7 that controls these operations and performs various arithmetic processes.

  The key 91 is one of operation devices that input user operations to the CPU 7 as operation signals, and may be a jog dial, a touch panel, or the like in addition to buttons such as a numeric keypad. In particular, in the present embodiment, the key 91 functions as an operation unit that operates page transition of content data.

  The memory 8 stores a telephone number, a model identifier, user information, and the like that are unique identifiers of the mobile communication terminal 1 and various programs executed by the CPU 7. Further, the memory 8 is provided with a cache area, in which the already browsed content data and its configuration data are stored. In addition, an index table T1 described later is stored in this cache area. In the index table T1, the content data stored in the cache area is associated with the URL (data identifier) identifying each content data, the time when each content data was acquired, the importance, and the like.

(CPU configuration)
The CPU 7 is an arithmetic device that reads and executes a program held in the memory 8. In this embodiment, the CPU 7 activates a browsing program and realizes a function of browsing an HTML file distributed from the content server 5. To do. The CPU 7 also includes a data transmission / reception unit 71 that transmits and receives data via the communication control unit 2, a data determination unit 73 that analyzes data contents, and a data synthesis unit 74 that causes the display device 92 to display and output data. And the output processing unit 72 are realized. The CPU 7 also realizes the functions of a cache writing unit 76 and a cache reading unit 75 that perform writing and reading of the cache on the memory 8.

  The data transmission / reception unit 71 is a module that transmits and receives data such as an IP packet through the communication control unit 6, acquires content data from the content server 5 on the communication network 4 in response to a page transition operation by the key 91, and a data composition unit 74 and the output processing unit 72 to output from the display device 92 and the speaker 93. The data transmission / reception unit 71 stores the content data acquired from the communication network 4 in the cache area of the memory 8 through the cache writing unit 76 and sends the URL of the acquired content data to the data determination unit 73. . Further, the data transmission / reception unit 71 acquires the file information generated by the data determination unit 73 and transmits the file information to the control unit 3 through the communication control unit 6.

  The data synthesis unit 74 acquires the content data received by the data transmission / reception unit 71 and the configuration data constituting the content data, and reads the data stored in the cache area through the cache reading unit 75 as necessary. This is a module that synthesizes these and outputs them to the output processing unit 72. The output processing unit 72 is a module that converts the data input from the data synthesis unit 74 into a predetermined video signal or audio signal and outputs the video signal or audio signal to the display device 92 or the speaker 93.

  The cache reading unit 75 reads data stored in the cache area of the memory 8, that is, content data that has already been browsed or configuration data that is a part thereof, in response to a request from the data synthesis unit 74 or the data determination unit 73. Is a module to output. On the other hand, the cache writing unit 76 is a module that stores the data acquired by the data transmission / reception unit 71, that is, the content data browsed once, in the cache area of the memory 8.

(Configuration of terminal-side data determination unit)
The data determination unit 73 is a module that analyzes the content of the content data based on the URL of the content data received by the data transmission / reception unit 71. FIG. 2 is a block diagram illustrating the function of the data determination unit 73. 2 shows the index table T1 stored in the cache area in the memory 8 and the table data T2 stored in the data determination unit 32 in the control unit 3 in relation to the data determination unit 73. The other devices are not shown.

  The data determination unit 73 determines whether the content data related to the page transition is stored in the memory 8 according to the page transition caused by the user operation. If the data is not stored, the data determination unit 73 determines the content data related to the page transition. On the other hand, when content data related to page transition is stored in the memory 8, it is a module that includes the URL of the content data in the file information and transmits it to the communication network 4 side.

  Specifically, the data determination unit 73 includes an index analysis unit 73d and a page configuration analysis unit 73e as interfaces to the cache area, and includes a server side data analysis unit 73a and a file information generation unit 73c as server side interfaces. ing.

  The index analysis unit 73d is a module that reads and analyzes the index table T1 that associates the content data with the URL of each content data, the time when each content data was acquired, the importance level, and the like. The data is output to the comparison unit 73h, the update frequency calculation unit 73i, and the importance level determination unit 73j.

  The page configuration analysis unit 73e analyzes actual data of content data that has already been browsed and stored in the cache area, for example, tag data of an HTML file, and the page configuration of the content data, video data or Whether or not audio data is included is extracted. The analyzed page configuration is output to the transmission information determination unit 73f and the CRC calculation unit 73g.

  The time stamp comparison unit 73h obtains the current time from the clock unit 73k, compares the content data stored in the memory 8 analyzed by the index analysis unit 73d, and stores the time. This module calculates how much time has passed since the content data being downloaded is downloaded. The time stamp comparison unit 73h acquires the update time of the server-side content from the server-side data analysis unit 73a, compares the update time with the current time, and how long since the server-side content is updated. It also has a function to calculate whether or not has elapsed.

  The update frequency calculation unit 73i is a module that calculates how often the same content data is downloaded based on the analysis result of the index analysis unit 73d. The importance level determination unit 73j is a module that determines the level of importance of content data related to page transition based on data stored in the index table T1.

  The processing results in the time stamp comparison unit 73h, the update frequency calculation unit 73i, and the importance level determination unit 73j are output to the transmission information determination unit 73f. On the other hand, the analysis result output from the page configuration analysis unit 73e is output to the CRC calculation unit 73g, and the CRC calculation unit 73g calculates the CRC of the content data.

  The transmission information determination unit 73f includes the elapsed time, the update frequency, and the importance calculated by the time stamp comparison unit 73h, and predetermined threshold values (for example, the elapsed time is 24 hours or more, the importance rank, and the update frequency is 24 hours). The above is a module for determining whether to download content data from the server side according to the comparison result. In addition, the transmission information determination unit 73f receives information (URL or fill name) specifying configuration data to be downloaded (for example, video data or audio data included in the content data with high update frequency) from the page configuration analysis unit 73e. Acquire and notify the command output unit 73b and the file information generation unit 73c.

  The file information generation unit 73c is a module that generates file information to be transmitted to the data determination unit 32 in the control unit 3, and notifies the data determination unit 32 which content data or configuration data is desired to be received. . For example, the data identifier (URL or file name) of the file data included in the content data is included in the file information and transmitted.

  The command output unit 73b is a module that outputs a command to another module or device in response to the determination of the transmission information determination unit 73f. For example, the command output unit 73b is configured to display the downloaded configuration data and the data stored in the cache area. When combining the data, the cache reading unit 75 is instructed to read the cache, the data transmitting / receiving unit 71 is instructed to download the data, and the data combining unit 74 is instructed to combine the data. The file information generation unit 73c also executes transmission of file information in accordance with the command of the command output unit 73b.

(Operation of content browsing system)
The operation of the content browsing system having the above configuration will be described. First, operation processing on the mobile communication terminal 1 side will be described. FIG. 3 is a flowchart showing the operation on the mobile communication terminal 1 side.

  First, the user operates the key 91 while looking at the display device 92, inputs the address (URL) of content data desired to be browsed, and performs browsing (page transition) (S301). Along with this operation, the data determination unit 73 determines whether or not the content data related to the page transition is cached in the memory 8 (S302).

  If it is determined in this step S302 that it is not cached, the URL is transmitted to the base station, and a general download process is executed (S310). In this general download process, the same distribution request as usual is transmitted from the mobile communication terminal 1. When the content data is received by the data transmission / reception unit 71 (S311), the received content data is displayed (output) (S308) and stored in the cache area (S309). On the other hand, if it is determined in step S302 that the data is cached, the corresponding content data is read from the cache area by the cache reading unit 75 (S303), and the data determination unit 73 determines the data (S304 to S306). ).

  More specifically, in step S304, referring to the index table T1 stored in the cache area, as shown in FIG. 4, the URL related information of the content data related to the download (cached time, importance, update, etc.) Frequency) is acquired (S401) and compared with each threshold value. That is, whether the cached time has passed 24 hours or more (S402), is it an important page (S403), or is the statistical update frequency calculated by the update frequency calculation unit 73i being 24 hours or more (S404)? Are judged sequentially. When it is determined that the threshold value is exceeded in each step (“Y” in steps S402 to S404), the process proceeds to steps S310 to S309, and general processing is executed. On the other hand, when it is determined that the threshold value is exceeded in each step ("N" in steps S402 to S404), the process proceeds to the next step S305.

  In step S305, as shown in FIG. 5, the page configuration analysis unit 73e extracts images and video files included in the content data cached in the cache area (S501), and counts the number of extracted files ( In S502), the counted result is output to the transmission information determining unit 73f, and the process proceeds to the subsequent step S306.

  In step S306, as shown in FIG. 6, first, the server side data analysis unit 73a transmits only the URL to be downloaded to the control unit 3 (S601), and the table data T2 of the base station (communication network 4 side) is stored. The time T when the content data was last updated is received (S602). Here, it is assumed that the content data includes a plurality of files.

Then, one of the plurality of files is selected (S603), and the time stamp comparison unit 73h determines whether or not the time stamp of the file is older than T (S604). If it is determined in step S604 that the time stamp is new ("N" in step S604), the file temporarily stored in the cache area is used and displayed as it is (S610). On the other hand, if it is determined in step S604 that the time stamp is old (“Y” in step S604), the CRC calculation unit 73g calculates 16-bit CRC (S605), and the page configuration analysis unit 73e caches the file. File name, time stamp, and size information are extracted (S606).

  Next, by repeating the loop process, the processes of steps S603 to S606 and S610 are executed for all the files (S607), and the information and CRC extracted by the file information generating unit 73c are included in the file information, and the base station (S608). On the base station side, data distribution is started according to the file information. The mobile communication terminal 1 receives data from the base station side (S609), and proceeds to the step S307.

  Then, as shown in FIG. 3, the received data and the already cached data are combined and reconstructed (S307), and the reconstructed data is displayed (output) (S308). (S309).

  Next, operation processing on the content server 5 side will be described. FIG. 7 is a flowchart showing an operation process on the content server 5 side.

  As shown in the figure, when a content data distribution request and URL related to page transition are received from the mobile communication terminal 1 (S701), reading of the corresponding content server 5 is started (S702). At this time, the table data T2 stored in the control unit 3 is referred to. Then, the data determination unit 32 determines whether the content data to be distributed is based on normal processing (S703). This determination is performed by identifying whether or not the data received from the mobile communication terminal 1 is a distribution request for normal processing.

  If it is determined in step S703 that the process is a normal process ("Y" in step S703), the content data specified by the URL is transmitted to the mobile communication terminal 1 (S712). On the other hand, when it is determined that the process is not normal processing (“N” in step S703), the process proceeds to the subsequent step S704.

  In step S704, the last update time of the content data related to the download is transmitted to the mobile communication terminal 1. In response to this, the mobile communication terminal 1 transmits the file information generated by the file information generation unit 73c. On the server side, the file information is received (S705), and the following steps S706 to S711 are executed for the file specified by the file information (the file included in the content data or the configuration data constituting the content data). To do.

  That is, based on the file specified by the file information, the file is read from the content server and one of them is selected (S706). Then, it is determined whether the corresponding file is an image or video file (S707). When the file is not an image or video file ("N" in step S707), that is, when the corresponding file is text data, the latest file is always transmitted. To do. On the other hand, when the corresponding file is an image or video file (“Y” in step S707), it is determined whether or not the corresponding file is included in the file information received from the mobile communication terminal 1 (S708).

  If there is no corresponding file in step S708 ("N" in step S708), all the files are transmitted. On the other hand, if there is a corresponding file in step S708 (“Y” in step S708), it is determined whether or not the file has been updated (S709), and if it has not been updated (“N” in step S709). ") Discards the file read from the content server (S713), and creates binary difference information when it is updated (S710).

  Then, by repeating the loop process, the processes in steps S706 to S710 and S713 are executed for all the files (S711), and the non-discarded file and the configuration data specified by the binary difference information are transmitted to the terminal. (S712).

  By the operation processing on the mobile communication terminal 1 side and the operation processing on the server side described above, various data are transmitted and received between the mobile communication terminal 1 and the server as shown in FIG.

  That is, in steps S601 and S701, first, the URL of content data related to page transition is transmitted from the mobile communication terminal 1 to the base station side, and accordingly, in steps S602 and S704, mobile communication is performed from the base station side. The terminal 1 is notified of the time when the corresponding content was last updated.

  Then, file information is generated on the mobile communication terminal 1 side, and the file information is notified to the base station side as information relating to the cache contents by the steps S608 and S705, and necessary from the base station side by the steps S609 and S712. Files and configuration data (binary differences) are distributed.

(Operations and effects of content browsing system)
According to the content browsing system described above, when using the cached data, the mobile communication terminal 1 and the communication network 4 exchange information with each other and use the cached data as it is, or necessary data It is possible to determine whether to download only the new data, the amount of data to be downloaded can be reduced, and adverse effects caused by using old cache data can be avoided.

  In particular, in the present embodiment, the cache time is managed in association with the content data or the configuration data by the index table T1 of the mobile communication terminal 1, so that the cached data according to the elapsed time from the time when the previous data was downloaded. It is possible to determine whether or not to use the file, and it is possible to omit transmission and reception of unnecessary data by making a determination in advance as to whether or not to transmit the file information.

  In this embodiment, the page configuration analysis unit 73e analyzes image, video, or audio file data included in the cached content data, and re-downloads only text data. Can be prevented from being frequently downloaded again.

  Furthermore, in this embodiment, by transmitting and receiving information between the mobile communication terminal 1 and the content server 5, the importance determination unit 73j compares the cache time with the update time, and based on the comparison result Since re-downloading is determined, it is possible to prevent re-downloading of files that have not been updated since the previous cache, and unnecessary data transmission / reception can be omitted. In addition, since the importance level of the content data cached by the index table T1 is managed on the mobile communication terminal 1 side, only important files can be downloaded again, and unnecessary data transmission / reception can be omitted.

1 is a schematic configuration diagram of a content browsing system according to an embodiment. It is a block diagram which shows the function of the data determination part 73 which concerns on embodiment. It is a flowchart figure which shows the operation | movement by the side of the portable communication terminal 1 which concerns on embodiment. It is a flowchart figure which shows the operation | movement in step S304 which concerns on embodiment. It is a flowchart figure which shows the operation | movement in step S305 which concerns on embodiment. It is a flowchart figure which shows the operation | movement in step S306 which concerns on embodiment. It is a flowchart figure which shows the operation | movement process in the content server 5 side which concerns on embodiment. It is a sequence diagram of the data transmission / reception between the terminal and server which concern on embodiment.

Explanation of symbols

T1 index table, T2 table data, 1 mobile communication terminal, 2, 6 communication control unit, 3 control unit, 4 communication network, 5 content server, 7 CPU, 8 memory, 21 radio base station, 31 data transmission / reception unit, 32 data Determination unit, 71 Data transmission / reception unit, 72 Output processing unit, 73 Data determination unit, 73a Server side data analysis unit, 73b Command output unit, 73c File information generation unit, 73d Index analysis unit, 73e Page configuration analysis unit, 73f Transmission information Determination unit, 73g CRC calculation unit, 73h Time stamp comparison unit, 73i Update frequency calculation unit, 73j Importance determination unit, 73k Clock unit, 74 Data composition unit, 75 Cache read unit, 76 Cache write unit, 91 key, 92 Display device, 93 speakers

Claims (10)

An operation unit for operating page transition of content in a page format distributed from a content server on a communication network;
A data receiving unit for acquiring content corresponding to the page transition operation of the operation unit or a file constituting the content;
A memory that stores at least the URL of the content together with the content acquired by the data receiving unit;
Whether the content corresponding to the page transition operation of the operation unit is stored in the memory by comparing the URL corresponding to the page transition operation of the operation unit and the URL of the content stored in the memory. A memory presence / absence determining unit for determining
When the storage presence / absence determining unit determines that the content corresponding to the page transition operation of the operation unit is not stored in the memory, the page is transmitted to the communication control unit provided on the communication network. When the URL of the content corresponding to the transition is transmitted, the distribution request for the content corresponding to the page transition is requested, and it is determined that the content corresponding to the page transition operation of the operation unit is stored in the memory A transmission request unit that transmits the URL of the content stored in the memory to the communication control unit;
The transmission request unit transmits the URL of the content stored in the memory to the communication control unit, thereby receiving an update time indicating the time when the content transmitted from the communication control unit was last updated, This update time is compared with the time stamp of each file included in the content stored in the memory, and file information indicating a file whose time stamp is older than the update time is included in the URL of the content. A file information transmission unit for transmitting to the communication control unit;
A file of text data transmitted from the communication control unit and / or an image file transmitted from the communication control unit by transmitting the file information from the file information transmission unit to the communication control unit. Alternatively, a data synthesizing unit that synthesizes the configuration data indicating the difference between the video files with the content stored in the memory;
When the storage presence / absence determining unit determines that the content corresponding to the page transition operation of the operation unit is not stored in the memory, the URL of the content related to the page transition is transmitted to the communication control unit. Is transmitted, and the content distribution request for the page transition is made, so that the content corresponding to the page transition operation of the operation unit transmitted from the communication control unit is output, or the data synthesizing unit An output processing unit for outputting the synthesized content;
A mobile communication terminal equipped with
When a content distribution request corresponding to the page transition is made from the transmission request unit of the mobile communication terminal, the page transition is made from the content server on the communication network based on the URL transmitted together with the distribution request. A normal processing unit for acquiring corresponding content and transmitting it to the mobile communication terminal;
A database storing the URL and update time of each content distributed from each content server on the communication network;
Update time at which when the URL of the content stored in the memory is received from the transmission request unit of the mobile communication terminal, the update time of the content corresponding to the URL is detected from the database and transmitted to the mobile communication terminal A transmission unit;
When the update time is transmitted from the update time transmission unit, the content corresponding to the URL included in the file information transmitted from the file information transmission unit of the mobile communication terminal is acquired from the content server. Of the files constituting the acquired content, the text data file is transmitted to the mobile communication terminal as it is, and among the files constituting the acquired content, the image file or video file other than the text data is Determining whether the file corresponds to the file indicated by the file information received from the portable communication terminal, and is not a file corresponding to the file indicated by the file information received from the portable communication terminal. If discriminated, this image file or video file When it is determined that the file corresponds to the file indicated by the file information transmitted to the mobile communication terminal and received from the mobile communication terminal, an image file or video file corresponding to the file information If the image file or video file corresponding to the file information is determined not to be updated, the image file or video file corresponding to the file information is discarded. If it is determined that the image file or the video file corresponding to the file information is not updated and is not transmitted to the mobile communication terminal, the configuration data indicating the difference between the data before and after the update. A transmission information control unit configured to transmit to the mobile communication terminal
A communication control unit provided on the communication network comprising:
A content browsing system. The memory stores the content acquired by the data receiving unit, the URL of the content, and the cache time when the content data is acquired,
When the transmission request unit determines that the content corresponding to the page transition operation of the operation unit is stored in the memory, the elapsed time from the cache time of the content stored in the memory is determined. It is determined whether or not a predetermined time has elapsed, and if it is determined that the predetermined time has not elapsed, the page transition is performed with respect to the communication control unit provided on the communication network. Is sent to the communication control unit, the distribution request for the content corresponding to the page transition is made, and when it is determined that the elapsed time has exceeded a predetermined time, The content browsing system according to claim 1, wherein a URL of content stored in the memory is transmitted . The memory stores the content acquired by the data receiving unit, the URL of the content, and the cache time when the content data is acquired, and the importance of the content.
When the transmission request unit determines that the content corresponding to the page transition operation of the operation unit is stored in the memory, the elapsed time from the cache time of the content stored in the memory is determined. It is determined whether or not a predetermined time has elapsed and whether or not the importance of the content stored in the memory is greater than or equal to a predetermined threshold, and the elapsed time has passed a predetermined time. If it is determined that the importance is not greater than or equal to a predetermined threshold, the page transition is performed for the communication control unit provided on the communication network. The URL of the corresponding content is transmitted and a distribution request for the content corresponding to the page transition is made, and it is determined that the elapsed time has exceeded a predetermined time. And when, or if the severity is determined to what is more importance predetermined threshold, according to claim 2 for transmitting to said communication control unit, the URL of the content stored in the memory Content browsing system. When a content distribution request corresponding to page transition is made from a mobile communication terminal viewing content distributed from a content server on the communication network, the communication network is based on the URL transmitted together with the distribution request. A normal processing unit that acquires content corresponding to the page transition from the content server above and transmits the content to the mobile communication terminal;
A database storing the URL and update time of each content distributed from each content server on the communication network;
When the mobile communication terminal detects that the content corresponding to the page transition operation is stored in the memory, the mobile communication terminal receives the URL of the content stored in the memory that is transmitted from the mobile communication terminal. An update time transmission unit that detects the update time of the content corresponding to the URL from the database and transmits the update time to the mobile communication terminal;
The mobile communication terminal receives the update time from the update time transmitter, and compares the update time with the time stamp of each file included in the content stored in the memory. The content corresponding to the URL included in the file information indicating the file whose time stamp is older than the update time is acquired from the content server, and the text data of each file constituting the acquired content is transmitted. The file is transmitted to the mobile communication terminal as it is, and the image file or video file other than the text data among the files constituting the acquired content is indicated by the file information received from the mobile communication terminal. It is determined whether the file corresponds to the file and When it is determined that the file does not correspond to the file indicated by the file information received from the terminal, the image file or the video file is directly transmitted to the portable communication terminal and received from the portable communication terminal. If it is determined that the file corresponds to the file indicated by the file information, the image file corresponding to the file information or the video file is determined to be updated, and the image file corresponding to the file information is determined. Alternatively, when it is determined that the video file has not been updated, the file information is not transmitted to the portable communication terminal by discarding the image file or the video file corresponding to the file information. It is determined that the image file or video file corresponding to is updated. In this case, a transmission information control unit which forms the configuration data indicating a difference data before and after the update is transmitted to the mobile communication terminal
A communication control unit provided on a communication network . An operation unit for operating page transition of content in a page format distributed from a content server on a communication network;
A data receiving unit for acquiring content corresponding to the page transition operation of the operation unit or a file constituting the content;
A memory that stores at least the URL of the content together with the content acquired by the data receiving unit;
Whether the content corresponding to the page transition operation of the operation unit is stored in the memory by comparing the URL corresponding to the page transition operation of the operation unit and the URL of the content stored in the memory. A memory presence / absence determining unit for determining
When the storage presence / absence determining unit determines that the content corresponding to the page transition operation of the operation unit is not stored in the memory, the page is transmitted to the communication control unit provided on the communication network. When the URL of the content corresponding to the transition is transmitted, the distribution request for the content corresponding to the page transition is requested, and it is determined that the content corresponding to the page transition operation of the operation unit is stored in the memory A transmission request unit that transmits the URL of the content stored in the memory to the communication control unit;
The transmission request unit transmits the URL of the content stored in the memory to the communication control unit, thereby receiving an update time indicating the time when the content transmitted from the communication control unit was last updated, This update time is compared with the time stamp of each file included in the content stored in the memory, and file information indicating a file whose time stamp is older than the update time is included in the URL of the content. A file information transmission unit for transmitting to the communication control unit;
A file of text data transmitted from the communication control unit and / or an image file transmitted from the communication control unit by transmitting the file information from the file information transmission unit to the communication control unit. Alternatively, a data synthesizing unit that synthesizes the configuration data indicating the difference between the video files with the content stored in the memory;
When the storage presence / absence determining unit determines that the content corresponding to the page transition operation of the operation unit is not stored in the memory, the URL of the content related to the page transition is transmitted to the communication control unit. Is transmitted, and the content distribution request for the page transition is made, so that the content corresponding to the page transition operation of the operation unit transmitted from the communication control unit is output, or the data synthesizing unit A portable communication terminal comprising: an output processing unit that outputs the synthesized content . The memory stores the content acquired by the data receiving unit, the URL of the content, and the cache time when the content data is acquired,
When the transmission request unit determines that the content corresponding to the page transition operation of the operation unit is stored in the memory, the elapsed time from the cache time of the content stored in the memory is determined. It is determined whether or not a predetermined time has elapsed, and if it is determined that the predetermined time has not elapsed, the page transition is performed with respect to the communication control unit provided on the communication network. Is sent to the communication control unit, the distribution request for the content corresponding to the page transition is made, and when it is determined that the elapsed time has exceeded a predetermined time, Send the URL of the content stored in the memory
The mobile communication terminal according to claim 5 . The memory stores the content acquired by the data receiving unit, the URL of the content, and the cache time when the content data is acquired, and the importance of the content.
When the transmission request unit determines that the content corresponding to the page transition operation of the operation unit is stored in the memory, the elapsed time from the cache time of the content stored in the memory is determined. It is determined whether or not a predetermined time has elapsed and whether or not the importance of the content stored in the memory is greater than or equal to a predetermined threshold, and the elapsed time has passed a predetermined time. If it is determined that the importance is not greater than or equal to a predetermined threshold, the page transition is performed for the communication control unit provided on the communication network. The URL of the corresponding content is transmitted and a distribution request for the content corresponding to the page transition is made, and it is determined that the elapsed time has exceeded a predetermined time. When, or if the severity is determined to what is more importance predetermined threshold, transmitted to the communication control unit, the URL of the content stored in the memory
The mobile communication terminal according to claim 6 . The content corresponding to the page transition operation of the page format content distributed from the content server on the communication network by the storage presence / absence determining unit of the mobile communication terminal and the content stored in the memory Determining whether content corresponding to the page transition operation of the operation unit is stored in the memory by comparing the URLs of
In the step, when the storage presence / absence determining unit determines that the content corresponding to the page transition operation of the operation unit is not stored in the memory, the transmission request unit of the mobile communication terminal is connected to the communication network. The URL of the content corresponding to the page transition is transmitted to the communication control unit provided in the network, and the distribution request for the content corresponding to the page transition is requested. If it is determined that the content is stored in the memory, a step of transmitting the URL of the content stored in the memory to the communication control unit;
When the file information transmission unit of the mobile communication terminal transmits the URL of the content stored in the memory to the communication control unit in the step, the content transmitted from the communication control unit is An update time indicating the last update time is received, the update time is compared with the time stamp of each file included in the content stored in the memory, and the time stamp is older than the update time. Transmitting file information indicating a file to the communication control unit including the URL of the content;
In the step, the data compositing unit of the mobile communication terminal transmits the file information from the file information transmitting unit to the communication control unit, so that a file of text data transmitted from the communication control unit, and Or combining the configuration data indicating the difference between the image file or the video file transmitted from the communication control unit with the content stored in the memory;
When the output processing unit of the mobile communication terminal determines that the content corresponding to the page transition operation of the operation unit is not stored in the memory by the storage presence / absence determination unit in the step, the communication control The URL of the content related to the page transition is transmitted to the unit, and the delivery request for the content related to the page transition is made, so that the page transition operation of the operation unit transmitted from the communication control unit is performed. Outputting corresponding content, or outputting the synthesized content in the data synthesis unit in the step;
The normal processing unit of the communication control unit provided on the communication network is transmitted together with the distribution request when the distribution request for the content corresponding to the page transition is made from the transmission request unit of the portable communication terminal. Acquiring content corresponding to the page transition from a content server on a communication network based on the URL, and transmitting the content to the mobile communication terminal;
When the update time transmission unit of the communication control unit receives the URL of the content stored in the memory from the transmission request unit of the mobile communication terminal, the update time of the content corresponding to the URL is displayed as the communication network. Detecting from the database storing the URL and update time of each content distributed from each content server above and transmitting it to the mobile communication terminal;
When the transmission information control unit of the communication control unit transmits the update time from the update time transmission unit, it corresponds to the URL included in the file information transmitted from the file information transmission unit of the mobile communication terminal. Content to be acquired from the content server, and among the files constituting the acquired content, the text data file is transmitted to the mobile communication terminal as it is, and among the files constituting the acquired content, the file It is determined whether an image file or a video file other than text data is a file corresponding to the file indicated by the file information received from the mobile communication terminal, and the file information received from the mobile communication terminal is used. When it is determined that the file does not correspond to the indicated file When this image file or video file is transmitted to the mobile communication terminal as it is and it is determined that the file corresponds to the file indicated by the file information received from the mobile communication terminal, the file information If the image file or video file corresponding to the file information is updated, and it is determined that the image file or video file corresponding to the file information has not been updated, the image corresponding to the file information If it is determined that the image file or the video file corresponding to the file information has been updated without discarding the file or the video file, the update is performed. A step of forming configuration data indicating a difference between preceding and succeeding data and transmitting it to the mobile communication terminal Content browsing method with. In the memory of the mobile communication terminal, the cache time at which the content data is acquired is stored together with the content and the URL of the content,
When the transmission request unit of the mobile communication terminal determines that the content corresponding to the page transition operation of the operation unit is stored in the memory in the step, the transmission request unit of the content stored in the memory It is determined whether or not an elapsed time from the cache time has passed a predetermined time, and if it is determined that the elapsed time has not passed the predetermined time, communication control provided on the communication network When the URL of the content corresponding to the page transition is transmitted to the unit, the distribution request for the content corresponding to the page transition is made, and it is determined that the elapsed time has exceeded a predetermined time, The URL of the content stored in the memory is transmitted to the communication control unit.
The content browsing method according to claim 8 . The importance level of the content is stored in the memory of the mobile communication terminal together with the content, the URL of the content, and the cache time when the content data is acquired.
When the transmission request unit of the mobile communication terminal determines that the content corresponding to the page transition operation of the operation unit is stored in the memory in the step, the content stored in the memory Whether the elapsed time from the cache time has exceeded a predetermined time and whether the importance of the content stored in the memory is higher than a predetermined threshold. If it is determined that the elapsed time has not passed the predetermined time and the importance is determined not to be greater than or equal to a predetermined threshold, communication control provided on the communication network The URL of the content corresponding to the page transition is transmitted to the unit, and the content distribution request corresponding to the page transition is requested. When it is determined that the interval has passed a predetermined time or when the importance is determined to be greater than or equal to a predetermined threshold, the communication control unit is stored in the memory. The URL of the content
The content browsing method according to claim 9 .

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