JP2001160018A - Mobile communication terminal and server and browsing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cache data without overflows in a portable telephone set on which a browser is loaded. SOLUTION: A mobile station 10 informs a Web server 40 via mobile packet communication network 20 and the Internet 30 of a page size on an EEPROM 104. The Web server 40 transmits HTML data in a size, corresponding to the communicated page size to a mobile station 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication terminal accommodated in a mobile communication network, a server for publishing a home page to the terminal, and a browsing method using the same.

[0002]

2. Description of the Related Art Mobile phones equipped with a Web browser are becoming widespread. The user can browse many homepages provided on the Internet by operating this type of mobile phone and executing a Web browser. By the way, the Web browser has a so-called cache function for improving the display speed of a homepage and reducing traffic on a network. This cache function means that data for displaying a downloaded home page is stored in a cache memory together with a URL (Uniform Resource Locator) designating a resource of the home page, and the same URL is again stored.
To display the home page of L, the home page is displayed by reading the data stored in the memory instead of accessing the home page on the Internet again.

[0003]

However, the capacity of the memory of a portable telephone is limited, and therefore, the data size per page (hereinafter referred to as page size) that can be cached by a browser is also predetermined. ing.
Therefore, there is a problem that data having a size exceeding the page size cannot be cached. The present invention has been made in view of the above circumstances, and has as its object to provide a mobile communication terminal, a server, and a browsing method that can properly cache a homepage supplied from a server without overflowing the terminal. And

[0004]

According to the first aspect of the present invention, there is provided a cache memory for storing data for displaying a homepage transmitted from a server connected to a mobile communication network in a cache memory. A mobile communication terminal provided with a cache unit for notifying the server of the size of the data that can be cached by the cache unit to the server via the mobile communication network. .

According to a second aspect of the present invention, in the mobile communication terminal according to the first aspect, the size notifying unit notifies the size of data for displaying the home page in page units.

According to a third aspect of the present invention, there is provided a mobile communication terminal comprising a cache unit for caching data for displaying a homepage transmitted from a server connected to a mobile communication network in a cache memory. Size setting means for setting a size of the data which can be cached by a cache means, and size notifying means for notifying the server of the size set by the size setting means to the server via the mobile communication network. It is characterized by.

According to a fourth aspect of the present invention, in the mobile communication terminal according to the third aspect, the size setting means sets the size of data for displaying the home page in page units, and the size notifying means sets , The size of the data in the set page unit is notified.

According to a fifth aspect of the present invention, in the mobile communication terminal according to any one of the first to fourth aspects, the size notifying means includes a request signal for requesting the server to transmit data and the size notification means. Is notified.

According to a sixth aspect of the present invention, there is provided a mobile communication terminal including a cache unit for caching data for displaying a homepage transmitted from a server connected to a mobile communication network in a cache memory, A data size receiving unit that is notified from a server and receives a size of data for displaying the homepage, and the data that can be cached by the cache unit according to the size received by the data size receiving unit. A size setting means for setting a size.

According to a seventh aspect of the present invention, in the mobile communication terminal according to the sixth aspect, the data size receiving means includes:
The size of the data for displaying the home page is received in page units, and the size setting unit sets the size of the data that can be cached by the cache unit to the size of the received data in page units. It is characterized by the following.

[0011] The invention according to claim 8 is a server connected to a mobile communication network accommodating the mobile communication terminal and transmitting data for displaying a home page to the mobile communication terminal, wherein the server is a mobile communication terminal. Means for acquiring the size of data that can be cached in the memory from the mobile communication terminal via the mobile communication network, and moving the data for displaying the homepage at a data size corresponding to the acquired size. Means for transmitting to the mobile communication terminal via a communication network.

According to a ninth aspect of the present invention, there is provided a server connected to a mobile communication network accommodating a mobile communication terminal and transmitting data for displaying a homepage to the mobile communication terminal, wherein the mobile communication terminal In contrast, prior to transmission of the data for displaying the homepage, a means for notifying the mobile communication terminal of the size of the data is provided.

According to a tenth aspect of the present invention, in the browsing method in which the mobile communication terminal accommodated in the mobile communication network browses a homepage supplied from a server connected to the mobile communication network, Notifying the server of the size of the data that can be cached in the cache memory to the server via the mobile communication network, and the data for displaying the homepage corresponded to the size notified from the mobile communication terminal. Transmitting the data size to the mobile communication terminal via the mobile communication network.

According to an eleventh aspect of the present invention, in the browsing method according to the tenth aspect, the step of notifying the server of the information on the size includes a step of determining a size of the data for displaying the cacheable home page. Is notified in page units.

According to a twelfth aspect of the present invention, there is provided a browsing method in which a mobile communication terminal accommodated in a mobile communication network browses a homepage supplied from a server connected to the mobile communication network. Setting the size of the data that can cache data for displaying the homepage in a cache memory; and setting the size set by the step of setting the size of the data via the mobile communication network. Notifying a server, and transmitting data for displaying the home page to the mobile communication terminal via the mobile communication network with a data size corresponding to the size notified from the mobile communication terminal. It is characterized by having.

According to a thirteenth aspect of the present invention, in the browsing method according to the twelfth aspect, the step of setting the size of the data that can be cached includes setting the size of the data for displaying the home page in page units. The step of setting and notifying the information on the size is characterized by notifying the size of the data in the set page unit.

The invention according to claim 14 is the invention according to claim 10
13. In the browsing method according to any one of the thirteenth aspect, the step of notifying the server of the information on the size includes notifying the size together with a request signal requesting the server to transmit data.

According to a fifteenth aspect of the present invention, in the browsing method in which a mobile communication terminal accommodated in a mobile communication network browses a homepage supplied from a server connected to the mobile communication network, the mobile communication terminal displays the homepage. Transmitting the size of the data from the server to the mobile communication terminal via the mobile communication network;
Receiving the transmitted size in the mobile communication terminal, and setting a size of the data that can be cached in a cache memory according to the received size in the mobile communication terminal. It is characterized by.

According to a sixteenth aspect of the present invention, in the browsing method according to the fifteenth aspect, the step of transmitting the information on the size of the data includes transmitting the size of the data for displaying the home page in page units,
Receiving the information on the size, receiving the size of the data transmitted in page units, and setting the size of the data, the size of the data that can be cached, the received The size of the data in page units is set to the size of the received data in page units.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. However, the present invention is not limited to such an embodiment, and various changes can be made within the scope of the technical idea.

A: First Embodiment First, a first embodiment of the present invention will be described. A-1: Configuration (1) System Configuration FIG. 1 is a block diagram showing the configuration of the entire system according to the first embodiment. As shown in FIG. 1, the system includes a mobile station 10, a mobile packet communication network 20, the Internet 30, and a Web server 40.

The mobile station 10 is a mobile communication terminal, such as a mobile phone, accommodated in a mobile telephone network and a mobile packet communication network 20 (not shown). The mobile telephone network and the mobile packet communication network 20 are communication platforms provided on common hardware, and the mobile station 10 receives a voice communication service of the mobile telephone network via wireless communication with the base station 21. Receive the packet communication service of the mobile packet communication network 20.

The mobile packet communication network 20 is a communication network for providing a packet communication service to the mobile station 10, and includes a base station 21, a packet subscriber processing unit 22, a gateway server 23, and communication lines connecting these. Consists of The base stations 21 are installed at predetermined intervals in a communication area, and perform wireless communication with the mobile station 10. The packet subscriber processing device 22 is a computer system provided in a packet switching center (not shown) that accommodates a plurality of base stations 21, and relays packet switching in the mobile packet communication network 20. Gateway server 23
Interconnects the mobile packet communication network 20 and the Internet 30 and relays data exchange between the networks while converting different communication protocols between the networks.

The Web server 40 is connected to the Internet 30
The homepage is provided to a mobile station 10 accommodated in the mobile packet communication network 20 and a personal computer (not shown) connected to the Internet 30. Here, the homepage is an information screen provided on the network and composed of characters and images, and the term "homepage" is used in this sense in the claims. Web server 40
Sets the homepage to be provided in HTML (Hyper Text
Markup Language) format data.
In response to a request from the mobile station 10 or a personal computer (not shown), the stored HTML format data (hereinafter referred to as HTML data) is transmitted via the Internet 30.

(2) Configuration of Mobile Station 10 Next, the configuration of the mobile station 10 will be described. FIG. 2 is a block diagram showing a configuration of the mobile station 10. As shown in FIG. As shown in FIG. 1, the mobile station 10 includes a wireless communication unit 10a, a control unit 10
b, a user interface unit 10c, and a bus 10d for interconnecting them.

The radio communication unit 10a includes an antenna (not shown) and a communication control circuit that performs processing necessary for radio communication, and performs radio communication with the base station 21. Wireless communication unit 10a
Performs communication control such as voice signal modulation / demodulation processing during a voice call, and performs data signal modulation / demodulation processing etc. during data communication.

The control unit 10b includes a CPU (Central
ssing Unit) 101, ROM (Read Only Memory)
102, RAM (Random Access Memory) 103, E
EPROM (Electric Erasable and Programmable
Read Only Memory) 104, etc.
It controls each part of the mobile station 10.

The ROM 102 stores software for browsing home pages, that is, a browser, in addition to a control program relating to a call function. This browser uses the Web
A display routine for downloading HTML data from the server 40, interpreting and displaying the data, a cache processing routine for caching the downloaded HTML data in the EEPROM 104, and a page unit of HTML data for displaying a cacheable homepage. , That is, a page size change routine for changing the page size, and a page size notification routine for notifying the Web server 40 of the page size.

The EEPROM 104 stores the EEPROM
A memory management table (not shown) for managing the memory area on M104 is stored, and this memory management table is used when the control unit 10b executes each routine related to the cache. Here, the cache refers to the HTML data of the homepage together with the URL specifying the resource of the homepage in the EEP in order to quickly redisplay the homepage once downloaded.
This is to temporarily store in the ROM 104. In the claims, the term "cache" is used in the above meaning.

The user interface unit 10c includes a liquid crystal display unit for displaying an interactive screen such as a homepage and various information.
It comprises a keypad for the user to perform various input operations, a microphone and a speaker for the user to talk. The keypad includes a page size change key for changing a page size, in addition to a numeric keypad for inputting numbers and characters.

Here, the memory area on the EEPROM 104 will be described. FIG. 3 shows E before the page size is expanded.
FIG. 4 is a schematic diagram showing an example of a memory map of the EPROM 104. FIG.
FIG. 3 is a schematic diagram showing an example of a memory map of FIG. As shown in FIGS. 3 and 4, in the EEPROM 104, a 50-kilobyte area from a memory address "adrs0001" to "adrs5000" is set as a cache area for caching HTML data.

As shown in FIG. 3, the cache area before the page size expansion is divided into areas of 5 kilobytes, and one of the areas has the HTML data for one screen of the home page downloaded from the Web server 40. Is stored. That is, the page size is set to 5 kilobytes. The downloaded HTML data contains the memory address “adrs0001”,
"Adrs0501", "adrs1001" ... "adrs4001", "ad
rs4501 ”in order. Each area on such a memory map is divided according to the description contents of a memory management table (not shown). For example, in the case shown in FIG. 3, the memory management table stores the start address “adrs0001” of the cache area, the page size “5 kilobytes”, and the end address “adrs5000” of the cache area.

The page size of 5 kilobytes is expanded to a page size of 10 kilobytes as shown in FIG. 4 by executing a page size change routine of the browser. In this case, the HTML data cached before the page size expansion is deleted from the lowest priority order, and the remaining HTML data is stored at memory addresses “adrs0001”, “adrs1001”, “adrs2001”,.
-Stored from the position of "adrs4001" in descending order of priority. Here, the lower priority order is the older order at the time of downloading the HTML data, and the reverse of the higher priority order. The page size change routine allows not only expansion but also reduction of the page size. For example, if the page size change routine is executed in a state where the page size is expanded as shown in FIG. Thus, the page size is reduced.

(3) Configuration of Gateway Server 23 Next, the configuration of the gateway server 23 will be described in detail. FIG. 5 is a block diagram showing the configuration of the gateway server 23. As shown in the figure, the gateway server 23 includes a communication unit 23a, a control unit 23b, a menu storage unit 23c, and a bus 23d connecting these.

The communication unit 23a includes the mobile packet communication network 20
And the Internet 30, and exchanges data via these networks.

The menu screen storage section 232 stores the mobile station 10
, Menu screen data for presenting various service menus is stored as HTML data. The service menu includes, for example, “Internet service” that allows the mobile station 10 to access a homepage specified by a URL.

The control section 23b is composed of a CPU and a memory (not shown) and controls each section of the gateway server 23. For example, the control unit 23b controls the mobile packet communication network 2
Communication protocol used within the Internet and the Internet 3
While performing mutual conversion with TCP / IP, which is a communication protocol of No. 0, data relay between these networks is performed via the communication unit 23a. Further, the control unit 23b controls the mobile station 1
In response to a menu acquisition request from 0, menu screen data is read from the menu storage unit 23c and transmitted to the mobile station 10 via the communication unit 23b.

(4) Configuration of Web Server 40 Next, the configuration of the Web server 40 will be described. FIG.
3 is a block diagram illustrating a configuration of the Web server 40.
As shown in the figure, the Web server 40 includes a communication unit 40
a, a control unit 40b, a data storage unit 40c, and a bus 40d interconnecting them.

The communication section 40a is connected to the Internet 30 and exchanges data via the Internet 30.

The control unit 40b includes a CPU, a memory, and the like (not shown), and executes various control programs to execute W
It controls the entire web server 40. This control program includes, for example, a homepage transmission routine for transmitting data for displaying a homepage to the mobile station 10 via the communication unit 40a.

The data storage section 40c holds data representing a homepage to be provided to the mobile station 10 and the personal computer. Specifically, the data storage unit 4
Reference numeral 0c stores three types of data, that is, summary sentence data, text data, and image data in a file format, and further manages the amount of each data on the data size management table 401. Here, the summary text data is text data in HTML format that represents a summary text of the contents of the homepage.
Image data is a G representing an image contained in a homepage.
IF (Graphics Interchange Format) format and JPE
The data is in G (Joint Photographic Experts Group) format. The text data is text data in HTML format for expressing the text of the home page and pasting the image data on the home page. The pasting of the image data is performed by designating a file name of the image data with a predetermined tag and designating a place where the image data is arranged on a homepage.
For example, when the Web server 40 publishes a homepage that provides a news breaking service, the summary data represents a summary of the content of each news, the image data represents an image related to each news, and the text data represents the content of each news. And indicates which image is to be placed where.

Next, the data stored in the data size management table 401 will be described. FIG. 7 is a format diagram showing an example of the storage contents of the data size management table 401. As shown in the drawing, the table 404 stores the data amount of the summary sentence data, the text data, and the image data for each URL of each home page. For example, "http // www.abc.
The summary sentence data of the homepage indicated by the URL “co.jp/hp001” is “2 kilobytes”, the body data is “7 kilobytes”, and the image data is “36 kilobytes”
It means that The control unit 40b controls the mobile station 1
According to the page size notified from 0, data to be transmitted to the mobile station 10 is extracted from the data storage unit 40c and transmitted.

A-2: Operation Next, the operation of the first embodiment having the above configuration will be described. Hereinafter, the operation will be described in the order of (1) the change of the page size by the mobile station 10, (2) the notification of the page size by the mobile station 10, and (3) the transmission of the home page by the Web server 40.

(1) Change of page size FIG. 8 is a flowchart showing the operation of the control unit 10b of the mobile station 10 changing the page size. In the figure, when the page size change key of the mobile station 10 is pressed by the user, the process of the control unit 10b proceeds to step Sa1. In step Sa1, the control unit 10b receives a pressing operation of the page size changing key by the user, and executes a page size changing routine in response thereto.

Next, the operation of the control unit 10b is performed in step S
Proceed to a2. In step Sa2, the control unit 10b
Refers to the memory management table to determine whether the page size in the cache area has already been expanded.
That is, the control unit 10b determines that the page has been expanded if the page size on the memory management table is 10 kilobytes, and determines that the page has not been expanded if the page size is 5 kilobytes.

When the result of the determination in step Sa2 is "NO" (that is, when the page size is not expanded), the process of the control section 10b proceeds to step Sa3. In step Sa3, the control unit 10b displays a page size extension notification on the liquid crystal display unit in order to inform the user that the page size will be extended. The extension notification is, for example, a display such as "Expand the page size of the Internet screen. Press the" 1 "key to extend, or the" 9 "key to not extend."

When the user sees this display and makes a ten-key input, the process proceeds to step Sa4, where the control unit 10b accepts an input operation by the user.

Next, the processing of the control unit 10b proceeds to step S
Proceed to a5. In step Sa5, the control unit 10b
Determines whether to expand the page size by interpreting the received input operation. For example, when the user inputs the key “9”, it is determined that the instruction is “do not expand the page size”, and the processing of the control unit 10B proceeds in the “no” direction, and the processing illustrated in FIG. I do.

On the other hand, when the user inputs the key "1", it is determined that the instruction is to "expand the page size", and the process of the control section 10b proceeds to step Sa6.
In step Sa6, the control unit 10b rewrites the page size in the memory management table so as to expand from 5 kilobytes to 10 kilobytes, and the process ends. By this processing, the memory map of the EEPROM 104 is changed as shown in FIG.
It will be something like shown below.

If the result of the determination in step Sa2 is "yes" (that is, if the page size has already been expanded), the process of the control section 10b proceeds to step Sa7.
In step Sa7, the control unit 10b displays a page size reduction notification on the liquid crystal display unit to inform the user that the page size will be reduced. The notice of the reduction is, for example, a display such as “Reduce the page size of the Internet screen. Press the“ 1 ”key to reduce the size. Press the“ 9 ”key to not reduce the size.”

When the user sees this display and makes a numeric key input, the process proceeds to step Sa8, and the controller 10b accepts an input operation by the user.

Next, the processing of the control unit 10b proceeds to step S
Proceed to a9. In step Sa9, the control unit 10b
Interprets the received input operation and determines whether to reduce the page size. For example, when the user inputs the key “9”, it is determined that the instruction is “do not reduce the page size”, and the process of the control unit 10b proceeds in the “no” direction and ends.

On the other hand, when the user inputs the key "1", it is determined that the instruction is "reduce the page size", and the process of the control unit 10b proceeds to step Sa10. In step Sa10, the control unit 10b rewrites the page size on the memory management table so as to reduce the page size from 10 kilobytes to 5 kilobytes, and the process ends. By this process, the memory map of the EEPROM 104 becomes as shown in FIG. After the page size on the memory management table is rewritten in this way, the cache process by the browser is performed according to the rewritten memory management table.

(2) Notification of Page Size Next, the operation of the control unit 10b of the mobile station 10 for notifying the page size will be described with reference to the flowchart shown in FIG. In FIG. 8, the user selects “Internet service” from the menu screen displayed on the mobile station 10, and then selects the U
When the RL is input and an access instruction to the Web server 40 is issued, the process of the control unit 10b proceeds to step Sb1.
Proceed to. In step Sb1, upon receiving an access request to the Web server 40 specified by the user, the control unit 10b executes a page size notification routine in response thereto.

Next, the process proceeds to step Sb2, and the control unit 10b acquires a page size by referring to the memory management table.

Next, the processing of the control unit 10b is performed in step Sb.
Proceed to 3. In step Sb3, the control unit 10b
The page size grasped in step Sb2 is added to the access request signal for the Web server 40. Specifically, a predetermined field in the header of the access request signal is predetermined as a description location of the page size, and the control unit 10b describes the page size in the predetermined field.

Next, the processing of the control unit 10b proceeds to step S
Proceed to b4. In step Sb4, the control unit 10b
Transmits an access request signal including the page size to the gateway server 23 via the wireless communication unit 10.
The gateway server 23 receives the request signal and transfers the request signal to the Web server 40. W that received the request signal
The eb server 40 executes a data transmission routine described later, and transmits data suitable for the page size of the mobile station 10 to the mobile station 10 via the Internet 30.

When the HTML data is transmitted from the Web server 40, the processing of the control unit 10b proceeds to step Sb5.
Proceed to. In step Sb5, the control unit 10b
The TML data is received via the wireless communication unit 10a.

Next, the processing of the control unit 10b proceeds to step S
Proceeding to b6, the control unit 10b stores the received HTML data in the EEPROM 104 according to the memory management table. Thereby, the HTML data is stored in the EEPROM1.
When the homepage represented by the HTML data is redisplayed thereafter, the control unit 10b transmits the homepage represented by the HTML data from the EEPROM 104 to the homepage.
The L data is read out and displayed.

(3) Transmission of Homepage Next, an operation of transmitting data for displaying the homepage by the control unit 40b of the Web server 40 will be described with reference to FIG. In FIG. 10, mobile station 1
When the access request signal is transmitted from 0, the processing of the Web server 40 proceeds to step Sc1. Step Sc
In 1, the control unit 40b receives the access request signal, and executes a homepage transmission routine in response thereto.

Next, the processing of the control unit 40b proceeds to step S
Proceed to c2. In step Sc2, the control unit 40b
Detects the page size included in the received access request signal. More specifically, the control unit 40b detects the page size of the mobile station 10 by referring to the header of the access request signal.

Next, the processing of the control unit 40b proceeds to step Sc.
Proceed to 3. In step Sc3, the control unit 40b
Detected page size and data size management table 40
1, data having a size equal to or smaller than the page size is extracted from the data storage unit 40c. For example, mobile station 10
Is the URL of "http // www.abc.co.jp / hp001" shown in Fig. 7.
When the control unit 40b accesses the home page specified by the user and notifies that the own page size is 5 kilobytes, the control unit 40b transmits the notified page size of 5 kilobytes and the data size management table 401.
, Data having a page size of 5 kilobytes or less is extracted from the data storage unit 40c. in this case,
The control unit 40b extracts 2 kilobytes of summary sentence data from the data storage unit 40c, and transmits this to the mobile station 10. Further, for example, when the mobile station 10 notifies that the page size is 10 kilobytes when accessing the homepage, the control unit 40b sends the page size 1
Data having a size of 0 kilobytes or less, that is, 2 kilobytes of summary text data and 7 kilobytes of main text data are extracted and transmitted to the mobile station 10. As described above, the control unit 40b extracts as much data as possible and transmits it to the mobile station 10 if the data is within the page size notified from the mobile station 10.

Next, the processing of the control unit 40b proceeds to step Sc.
Proceed to 4. In step Sc4, the control unit 40b
The extracted data is transmitted to the mobile station 10, and the processing illustrated in FIG.

According to the first embodiment described above, the mobile station 10 notifies the Web server 40 of the page size set in the EEPROM 104 and obtains data of a size matching the page size from the Web server 40. , And can be cached without overflow.

B: Second Embodiment Next, a second embodiment of the present invention will be described. The second embodiment does not change the page size according to the operation by the user as in the first embodiment, but changes the page size according to the data size of the home page notified from the Web server 40. .

B-1: Configuration The hardware configuration of the second embodiment is the same as that of the first embodiment, and the software configuration is different from that of the first embodiment. Therefore, the description of the hardware configuration of the second embodiment will be omitted, and different points of the software configuration will be described below. The software configuration of the second embodiment is the first
The difference from the embodiment is that the control program of the Web server 40 has a data size notification routine for notifying the data size of the home page to the mobile station 10, and that the browser of the mobile station 10 has the same page as in the first embodiment. There is no size notification routine, and the mobile station 10 has a page size setting routine for setting the page size according to the data size notified from the Web server 40.

B-2: Operation Next, the operation of the second embodiment will be described. Less than,
(1) Notification of data size by Web server 40,
The operation will be described in the order of (2) page size setting by the mobile station 10.

(1) Notification of Data Size FIG. 11 is a flowchart showing an operation in which the control unit 40b of the Web server 40 notifies the data size. In the figure, when an access request signal is transmitted from the mobile station 10, the processing of the Web server 40 proceeds to step Sd1. In step Sd1, when the control unit 40b receives the access request signal, a data size notification routine is executed.

Next, the processing of the control unit 40b proceeds to step S
Proceed to d2. In step Sd2, the control unit 40b
Is the UR included in the received access request signal.
L is detected.

Next, the processing of the control unit 40b proceeds to step Sd
Proceed to 3. In step Sd3, the control unit 40b
The data size of the homepage specified by the detected URL is referred to the data size management table 401 with reference to the data size management table 401. For example, when the detected URL is “http // www.abc.co.jp / hp001” shown in FIG. 7, the control unit 40b sets the data size “2 kilobytes” of the summary sentence data and the data size “7 Kilobytes "and the data size of image data" 36 kilobytes "are summed, and the obtained 45 kilobytes is used as the data size of the homepage.

Next, the processing of the control unit 40b proceeds to step Sd
Proceed to 4. In step Sd4, the control unit 40b
The data to be transmitted is divided into packet data having a predetermined data length, and the data size acquired in step Sd3 is added to the header of the packet data to be transmitted first to the mobile station 10 among the divided packet data. . For example, the data size of 45 kilobytes obtained as described above is added to the header of the packet data to be transmitted first to the mobile station 10 among the divided packet data.

Next, the processing of the control unit 40b proceeds to step Sd
Go to 5. In step Sd5, the control unit 40b
Internet 3
0 to the mobile station 10. When the transmission of all the packet data is completed, the processing shown in FIG.

(2) Setting of Page Size FIG. 12 is a flowchart showing the operation of the control unit 10b of the mobile station 10 for setting the page size. In FIG. 5, when packet data representing a home page is transmitted from the Web server 40, the process of the control unit 10b proceeds to step Se1. In step Se1, the control unit 1
0b receives the first packet data transmitted from the Web server 40, and executes the page size setting routine in response thereto.

Next, the processing of the control unit 10b is performed in step S
Proceed to e2. In step Se2, the control unit 10b
Detects the data size included in the header of the packet data received first. For example, the control unit 10b sets the data size to 4 based on the header of the received packet data.
Detect 5 kilobytes.

Next, the processing of the control unit 10b proceeds to step Se.
Proceed to 3. In step Se3, the control unit 10b
The page size on the memory management table is rewritten so as to conform to the detected data size. This rewriting process changes only the page size of the area where data is to be cached next. Here, the area where data is cached next means that the time of downloading data stored in this area is the oldest of the data cached in the cache area.
For example, in the memory map shown in FIG.
It is assumed that the area where b next caches data is a 5-kilobyte area indicated by memory addresses “adrs0501” to “adrs1000”. Here, when the processing of step Se3 is executed, the memory map becomes as shown in the schematic diagram of FIG. That is, the memory address “ad” shown in FIG.
The page size of 5 kilobytes of “rs0501” to “adrs1000” is, as shown in FIG.
Expanded to the adrs5000 page size of 45 kilobytes.

Returning to FIG. 12, the process of the control section 10b proceeds to step Se4. In step Se4, the control unit 10b converts the packet data received one after another into the EEPROM 104 according to the rewritten memory management table.
To be stored. When all the packet data is stored, the processing shown in FIG.

According to the second embodiment described above, the mobile station 10 sets the page size according to the data size notified from the Web server 40.
It is not necessary to set a page size larger than the size of the data received from the eb server 40, so that the cache area can be used efficiently.

C: Third Embodiment Next, a third embodiment of the present invention will be described. The third embodiment is different from the first embodiment in that the target of change or notification is the page size in the first embodiment, whereas the target of change or notification is the entire cache area in the third embodiment. This is the size (hereinafter referred to as cache size).

C-1: Configuration First, the configuration of the third embodiment will be described. The hardware configuration of the third embodiment is different from that of the first embodiment in that
The mobile station 10 has a cache size change key for changing the cache size instead of the page size change key. Next, the software configuration of the third embodiment is different from that of the first embodiment in that the browser of the mobile station 10 includes a cache size changing routine for changing the cache size instead of the page size changing routine described above. W that the browser has a cache size notification routine for notifying the cache size instead of the page size notification routine described above;
The control program of the eb server 40 has a homepage transmission routine for transmitting data according to the cache size notified from the mobile station 10.

C-2: Operation Next, the operation of the third embodiment will be described. In the following, (1) the change of the cache size by the mobile station 10,
(2) Notification of cache size by mobile station 10,
The operation will be described in the order of (3) transmission of a homepage by the Web server 40.

(1) Change of Cache Size FIG. 14 is a flowchart showing an operation in which the control unit 10b of the mobile station 10 changes the cache size. 8 differs from the flowchart shown in FIG. 8 in that the change target is not the page size but the cache size. Here, FIG. 15 shows an example of a memory map before the cache size is expanded, and FIG. 16 shows an example of a memory map after the cache size is expanded. The cache area of 50 kilobytes indicated by the memory addresses “adrs00001 to adrs05000” shown in FIG. 15 is obtained by executing the browser cache size change routine.
As shown in FIG. 16, the memory addresses “adrs00001 to adrs1
It has been extended to a 100 kilobyte cache area indicated by "0000".

(2) Notification of Cache Size FIG. 17 is a flowchart showing an operation in which the control unit 10b of the mobile station 10 notifies the cache size. 9, the difference from the flowchart shown in FIG. 9 is that the notification target is not the page size but the cache size, and the other operations are the same as those in FIG.

(3) Transmission of Homepage FIG. 18 is a flowchart showing an operation of transmitting a homepage by the control unit 40b of the Web server 40. In this figure, the difference from the flowchart shown in FIG.
The criterion for data extraction is not the page size notified from the mobile station 10 but the cache size. That is, the control unit 40b stores as much data as possible as long as it is smaller than the notified cache size.
0c and transmits it to the mobile station 10. Other operations are the same as those in FIG.

According to the third embodiment described above, the mobile station 10 notifies the Web server 40 of the cache size set in the EEPROM 104, and
Since data matching the cache size is obtained from 0, the data can be cached without overflow.

D: Modifications As described above, the present invention is not limited to the above-described embodiment.
The following various changes are possible.

D-1: Form of Mobile Station 10 In the first to third embodiments, the mobile station 10 is a mobile communication terminal such as a mobile phone, but is not limited to this.
PDA (Personal DigitalAssistant) capable of wireless communication
s) and PHS (Personal Handyphone) dedicated to data communication
System).

D-2: Connection Form of Web Server 40 In the first to third embodiments, the Web server 40 is connected to the gateway server 23 via the Internet 30, but is not limited to this. For example, the Web server 40
May be provided in the mobile packet communication network 20, or may be connected to the gateway server 23 via a network other than the Internet 30.

D-3: Data Representing a Homepage In the first to third embodiments, the data of the homepage stored by the Web server 40 is described in HTML, but the present invention is not limited to this, and for example, XML (Extensible Mark)
up Language). Even in the case of XML, the Web server 40 manages the summary data, the text data, and the image data separately, extracts the data according to the size notified from the mobile station 10, and extracts the data. Send to Further, the data for displaying the homepage may include data representing a voice in addition to the data described above. Further, as the image data, either a still image or a moving image can be adopted.

D-4: Values of Page Size and Cache Size In the first and second embodiments, the browser sets the page size to two patterns of 5 kilobytes and 10 kilobytes. However, the present invention is not limited to this. For example, 5, 10, 1
More patterns, such as 5 kilobytes, may be set. Alternatively, the user may input a desired page size using the numeric keypad, and the browser may change the page size to the input page size. Similarly, in the third embodiment, the cache size setting pattern can take various values.

[0090]

As described above, according to the present invention, the mobile communication terminal notifies the server of the size of data that can be cached, and data of a size corresponding to the notified size is transmitted from the server. The mobile communication terminal can cache data without overflow.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of an entire system according to a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a mobile station according to the embodiment.

FIG. 3 is a schematic diagram showing an example of a memory map of an EEPROM before a page size of a mobile station is expanded in the embodiment.

FIG. 4 is a schematic diagram showing an example of a memory map of an EEPROM after the page size of the mobile station is expanded in the embodiment.

FIG. 5 is a block diagram showing a configuration of a gateway server in the embodiment.

FIG. 6 is a block diagram showing a configuration of a Web server in the embodiment.

FIG. 7 is a format diagram showing an example of storage contents of a data size management table 401 provided in the Web server according to the embodiment.

FIG. 8 is a flowchart illustrating an operation of a control unit of the mobile station according to the embodiment.

FIG. 9 is a flowchart showing an operation of a control unit of the mobile station in the embodiment.

FIG. 10 is a flowchart showing the operation of the control unit of the Web server in the embodiment.

FIG. 11 is a flowchart illustrating an operation of a control unit of a Web server according to the second embodiment of the present invention.

FIG. 12 is a flowchart illustrating an operation of a control unit of the mobile station according to the embodiment.

FIG. 13 is a schematic diagram showing an example of a memory map of the EEPROM after the page size of the mobile station is expanded in the embodiment.

FIG. 14 is a flowchart illustrating an operation of a control unit of a mobile station according to the third embodiment.

FIG. 15 is a schematic diagram showing an example of a memory map of an EEPROM before a cache size of a mobile station is expanded in the embodiment.

FIG. 16 is a schematic diagram showing an example of a memory map of the EEPROM after the cache size of the mobile station is expanded in the embodiment.

FIG. 17 is a flowchart showing an operation of a control unit of the mobile station in the embodiment.

FIG. 18 is a flowchart showing the operation of the control unit of the Web server in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Mobile station (mobile communication terminal), 10a ... Wireless communication part 10b ... Control part 10c ... User interface part 101 ... CPU 102 ... RAM, 103 ... ROM, 104 ... EEPROM (non-volatile memory), 20 ... mobile packet communication network (mobile communication network), 21 ... base station, 22 ... packet subscriber processing device, 23 ... gateway server, 30 ··· Internet (network) 40 Web server (server) 40a Communication unit 40b Control unit 40c Data storage unit 401 Data size management table

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) H04L 12/58 H04L 11/20 101A 5K101 H04M 11/08 9A001 (72) Inventor Masaaki Yamamoto 2-chome Toranomon, Minato-ku, Tokyo No. 1 F-term in NTT Mobile Communication Network Co., Ltd. (reference) HH22 KK15 5K101 KK02 KK12 LL12 NN03 NN18 NN21 SS07 9A001 BB03 BB04 CC05 CC06 DD10 DD13 HH28 JJ18 JJ25 JJ27 KK56

Claims (16)

[Claims] 1. A mobile communication terminal including a cache unit for caching data for displaying a homepage transmitted from a server connected to a mobile communication network in a cache memory, wherein the cache unit caches the data. A mobile communication terminal comprising: a size notifying unit for notifying the server of the size of the data that can be transmitted to the server via the mobile communication network. 2. The mobile communication terminal according to claim 1, wherein the size notifying unit notifies the size of data for displaying the home page in page units. 3. A mobile communication terminal comprising a cache unit for caching data for displaying a homepage transmitted from a server connected to a mobile communication network in a cache memory, wherein the cache unit caches the data. A mobile communication terminal comprising: a size setting means for setting a size of the data which can be set; and a size notification means for notifying the server of the size set by the size setting means via the mobile communication network. . 4. The mobile communication terminal according to claim 3, wherein the size setting means sets the size of data for displaying the home page in page units, and the size notifying means sets the data in the set page units. A mobile communication terminal for notifying the size of the data. 5. The mobile communication terminal according to claim 1, wherein the size notifying unit notifies the size together with a request signal requesting the server to transmit data. Mobile communication terminal. 6. A mobile communication terminal provided with a cache unit for caching data for displaying a homepage transmitted from a server connected to a mobile communication network in a cache memory, wherein the homepage is notified from the server, A data size receiving means for receiving a size of data for displaying the data, and a size setting means for setting a size of the data which can be cached by the cache means according to the size received by the data size receiving means. A mobile communication terminal comprising: 7. The mobile communication terminal according to claim 6, wherein the data size receiving unit receives a data size for displaying the homepage in page units, and the size setting unit caches the data by the cache unit. A mobile communication terminal, wherein a size of data that can be set is set to the size of the data in the received page unit. 8. A server connected to a mobile communication network accommodating a mobile communication terminal and transmitting data for displaying a homepage to the mobile communication terminal, wherein the mobile communication terminal caches the data in a memory. Means for obtaining the size of data that can be obtained from the mobile communication terminal via the mobile communication network; and data for displaying the homepage at a data size corresponding to the obtained size via the mobile communication network. Means for transmitting to a communication terminal. 9. A server connected to a mobile communication network accommodating a mobile communication terminal and transmitting data for displaying a home page to the mobile communication terminal, wherein the server displays the home page to the mobile communication terminal. A server for notifying the mobile communication terminal of the size of the data prior to transmission of the data to be performed. 10. A browsing method in which a mobile communication terminal accommodated in a mobile communication network browses a homepage supplied from a server connected to the mobile communication network, wherein the mobile communication terminal caches in a cache memory. Notifying the server of the size of data that can be performed via the mobile communication network to the server; and providing the data for displaying the homepage in a data size corresponding to the size notified from the mobile communication terminal. Transmitting the data to the mobile communication terminal via a mobile communication terminal. 11. The browsing method according to claim 10, wherein the step of notifying the server of the information related to the size includes notifying a size of data for displaying the cacheable home page in page units. A browsing method characterized by the following. 12. A browsing method in which a mobile communication terminal accommodated in a mobile communication network browses a homepage supplied from a server connected to the mobile communication network, wherein the mobile communication terminal displays the homepage on the mobile communication terminal. Setting the size of the data that can be cached in a cache memory; and notifying the server of the size set by the step of setting the data size to the server via the mobile communication network; Transmitting the data for displaying the homepage to the mobile communication terminal via the mobile communication network with a data size corresponding to the size notified from the mobile communication terminal. Browsing method. 13. The browsing method according to claim 12, wherein the step of setting the size of the data that can be cached includes setting a size of data for displaying the home page in page units, and information about the size. Is notified of the size of the data in the set page unit. 14. The browsing method according to claim 10, wherein the step of notifying the server of the information on the size includes the step of notifying the size together with a request signal requesting the server to transmit data. A browsing method characterized by notifying. 15. A browsing method in which a mobile communication terminal accommodated in a mobile communication network browses a home page supplied from a server connected to the mobile communication network, wherein a size of data for displaying the home page is set to the size. Transmitting from the server to the mobile communication terminal via the mobile communication network, receiving the transmitted size at the mobile communication terminal, and according to the received size at the mobile communication terminal, A browsing method comprising: setting a size of the data at which the data can be cached in a cache memory. 16. The browsing method according to claim 15, wherein the step of transmitting the information on the size of the data transmits the size of the data for displaying the home page in page units, and receives the information on the size. Receiving the size of the data transmitted in page units; setting the size of the data; determining the size of the data that can be cached by the size of the data in the received page units A browsing method, wherein the size is set to the size of the received data in page units.