JPH10240605A - Information communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically update display by means of a browser at the time of updating a data base and to prevent wasteful communication by permitting an HTML screen generation means to generate an HTML(hyper text markup language) screen wherever the change of data is detected and transmitting the update of the screen to the browser. SOLUTION: A database change detection means 4 transmits a signal showing the effect of the change of the content of the database through a display state check means 5 to the HTML screen generation means 6 when it is changed by a database change means 3. The HTML screen generation means 6 transmits a signal showing the change of the content of an HTML screen file storage means 7 to the state monitor means 9 of a client-side computer 8. In the client- side computer 8, the state monitor means 9 transmits a signal received in an URL designation means 10 when it receives the signal and an URL designation means 10 designates URL and transmits the browser to read again an HTML screen file.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a World Wide Web (hereinafter referred to as W
The present invention relates to an information communication system for obtaining information from a database using software which is a kind of display tool called a browser on the Internet called WW)).

[0002]

2. Description of the Related Art FIG. 8 is a block diagram showing a configuration of a conventional information communication system for obtaining information on a WWW server by using a browser and displaying the information on a display. A WWW server, 2 is a database installed in the WWW server 1, and 6 is a hypertext markup language (Hyper Text Markup Lap) from information in the database 2.
HTML screen generating means for generating an HTML screen expressed by HTML (hereinafter abbreviated as HTML), and H generated by the HTML screen generating means 6
HTML screen file storage means for storing the HTML screen file, 8 is a client computer which requests information, 11 is installed in the client computer 8 and refers to the HTML screen file storage means 7 to display information on a display (not shown). Is a browser for displaying.

Next, the operation will be described. The HTML screen creation means 6 creates an HTML screen as needed when the contents of the database 2 are changed, and the HTML screen file in the HTML screen file storage means 7 is rewritten with new contents. On the other hand, the browser 11 transmits an information request to the WWW server 1 according to the user's request. WWW server 1
Returns the contents of the HTML screen file storage means 7, and the browser 11 displays the received information on the display.

[0004]

Since the conventional information communication system is configured as described above, once the browser 11 reads the HTML screen, the browser 11 prompts the user to switch to another HTML screen.
Unless the screen file is requested or the same file is not re-read, the browser 11 does not perform the reading operation of the HTML screen even if the contents of the database 2 are updated.
Does not change the display image on the display. Therefore, when the contents of the database 2 are frequently updated, the user needs to frequently request rereading in order to obtain information in real time, which is inconvenient. Further, if a request for rereading is made when the contents of the database 2 have not been updated, this leads to unnecessary communication and a problem that the efficiency is lowered.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. When a database is updated, a display by a browser is automatically updated, and information for preventing unnecessary communication is performed. The aim is to obtain a communication system.

[0006]

According to the first aspect of the present invention, there is provided an information communication system, comprising: a data change detecting means for detecting a change in data provided by a server to a client; and the data change detecting means detecting a change in data. HT each time it is detected
HTML screen creating means for creating an ML screen and instructing a browser to update the screen.

In the information communication system according to the second aspect of the present invention, data provided by the server to the client is stored in a database.

[0008] The information communication system according to the third aspect of the present invention further comprises a database changing means for changing the contents of the database.

According to a fourth aspect of the present invention, there is provided an information communication system comprising: a buffer for storing a date and time of change of a database;
State monitoring means for periodically examining the contents of the buffer and requesting a change of the display screen of the display on the client side when a change in the contents of the database is recognized.

In the information communication system according to the present invention, the data provided by the server to the client is generated by application software.

An information communication system according to a sixth aspect of the present invention further comprises a display update instruction means for instructing an update of data generated by the application software.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. Embodiment 1 FIG. FIG. 1 is a block diagram showing a configuration of an information communication system according to Embodiment 1 of the present invention. FIG.
, 1 is a WWW server (server) for providing information, 2 is a database placed in the WWW server 1,
3 is a database change means for changing the contents of the database 2, 4 is a database change detection means (data change detection means) for detecting that the contents of the database 2 have been changed, and 5 is the content of the HTML screen file which the browser 11 is currently using. Display state checking means 6 for checking whether or not the HTML is displayed, generates an HTML screen based on the data stored in the database 2, and displays HT on the client side.
The HTML screen creating means 7 for transmitting the ML file change notification is the HTML screen created by the HTML screen creating means 6.
HTML screen file storage means for storing a TML screen file, 8 a client-side computer (client), 9 a state monitoring means for receiving a notification from the WWW server 1, 10 a uniform resource locator (U
URL specifying means for notifying the browser 11 of an address indicating a location of an HTML screen file called a niform resource locator (hereinafter abbreviated as URL), and a browser 11 for displaying a screen on a display (not shown).

Next, the operation will be described with reference to the flowchart of FIG. First, the WWW server 1 generates an HTML screen file based on data stored in the database 2 as a start process (step ST).
1). In this state, the browser 11 on the client computer 8 makes an information request to the WWW server 1 and, when the contents of the HTML screen file storage means 7 are returned, displays them on the display.

Next, the database change detecting means 4 checks whether or not the contents of the database 2 have been changed (step ST2). If the contents of the database 2 have been changed by the database changing means 3 (step ST2).
3) The display state checking means 5 sends a signal indicating this to H
Transmit to the TEML screen creation means 6 (step ST
4). If the contents of the database 2 have not been changed, it is determined that there is no need to change the storage contents of the HTML screen file storage means 7, and the process returns to step ST2.

The display state checking means 5 includes a database 2
When the browser 11 receives a signal indicating that has been changed, the browser 11 checks the HTML screen file currently displayed on the display (step ST5). As a result, if the content of the currently displayed HTML screen file is not related to the changed content of the database 2, it is determined that the HTML screen file 7 does not need to be changed, and the process returns to step ST2. If the contents of the currently displayed HTML screen file relate to the changed contents of the database 2, it is determined that the HTML screen file needs to be changed, and the process proceeds to step ST7 (step ST6).

In step ST7, the HTML screen creating means 6 creates a new HTML screen according to the changed database 2, and proceeds to step ST8. Step S
At T8, the HTML screen creation means 6 sends a signal notifying that the contents of the HTML screen file storage means 7 have been changed to the state monitoring means 9 of the client-side computer 8.

In the client computer 8, when the status monitoring means 9 receives this signal, the URL specifying means 10
The received signal is transmitted to the
Is instructed to reload the HTML screen file to the browser 11 (step ST9). When the browser 11 receives the reread command signal, the browser 11
The updated HTML screen file is read from the ML screen file storage means 7, and the display screen of the display is updated (step ST10). After this, step S again
Returning to T2, it is determined whether or not the database 2 has been changed.

As described above, according to the first embodiment, each time the content of the database 2 is changed, the display state of the display on the client side is checked, and when a screen related to the changed content is displayed. Since the screen is automatically updated, the user does not need to request a reload for real-time information,
In addition, since unnecessary communication is not performed, an effect of high efficiency can be obtained.

Embodiment 2 FIG. 3 is a block diagram showing a configuration of an information communication system according to Embodiment 2 of the present invention. In the figure, the same components as those of the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

In FIG. 3, 1 'is a WW for providing information.
W server (server), 12 is application software for generating display data, and 13 is application output change detecting means (data change detecting means) for detecting that data generated by application software 12 has been changed.

Next, the operation will be described with reference to the flowchart of FIG. In the flowchart of FIG. 4, operation steps that perform the same operations as the operation steps shown in the flowchart of FIG. 2 are denoted by the same reference numerals.

The WWW server 1 'first generates an HTML screen file from the output contents generated and output by the application software 12 as a start process (step S).
T1 ').

In this state, the browser 11 on the client computer 8 makes an information request to the WWW server 1 ', and displays the contents of the HTML screen file storage means 7 when they are returned.

Next, the application output change detecting means 13 checks whether or not the output contents of the application software 12 have been changed (step ST2 '), and if the output contents have been changed by the application software 12 (step ST3). '), And transmits a signal to that effect to the display state checking means 5 (step ST4'). If the output content of the application software 12 has not been changed, it is determined that there is no need to change the storage content of the HTML screen file storage means 7, and the process returns to step ST2 '.

Next, when the display state checking means 5 receives a signal indicating that the contents of the database 2 have been changed from the application output change detecting means 13, the display state checking means 5 checks the HTML screen file currently displayed by the browser 11 (step ST5). ). As a result, if the currently displayed HTM
The content of the L screen file is
If there is no relationship with the changed contents, it is determined that there is no need to change the storage contents of the HTML screen file storage means 7, and the process returns to step ST2 '(step ST6). If the contents of the currently displayed HTML screen file relate to the changed contents of the application software 12, it is determined that the HTML screen file 7 needs to be changed, and the process proceeds to step ST7 (step ST6).

In step ST7, the HTML screen creating means 6 creates a new HTML screen file in accordance with the changed output contents from the application software 12, and proceeds to step ST8. The operation after step ST8 is the same as the operation of the first embodiment shown in FIG.
The description is omitted.

As described above, according to the second embodiment, even when the data content output from the application software is updated, the content of the display command of the browser 11 displaying the data content is automatically updated. And the screen on the display is automatically updated.

Embodiment 3 FIG. 5 is a block diagram showing a configuration of an information communication system according to Embodiment 3 of the present invention. In the figure, the same components as those of the second embodiment shown in FIG. 3 are denoted by the same reference numerals, and description thereof will be omitted.

In FIG. 5, reference numeral 14 denotes a display update instructing means for instructing the application software 12 of the WWW server 1 'to issue a display update instruction, which is actually a user or another application software.

Next, the operation will be described. The operation of the third embodiment is the same as that of the third embodiment except that the display update command is output from the display update command unit 14 to the application software 12 so that the display data generated by the application software 12 is updated. 2 is the same as the operation of FIG. Therefore, further description of the operation of this embodiment will be omitted.

As described above, according to the third embodiment, the WWW is executed by the client or the application software other than the software installed on the WWW server 1 '.
A command to change the display of the display data generated by the application software 12 installed in the server 1 ′, and the HTML screen file changed based on the command can be automatically displayed on the display on the client side. Is obtained.

Embodiment 4 FIG. FIG. 6 is a block diagram showing a configuration of an information communication system according to Embodiment 4 of the present invention. In the figure, the same components as those of the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

In FIG. 6, 1 "is a WW for providing information.
W server (server), 6 'is an HTML screen creating means for generating an HTML screen based on the data stored in the database 2 and transmitting the date and time of the HTML file change to the date and time buffer (buffer) 15; The computer (client) 9 ′ transmits a request for transmission of a signal representing the date and time of updating the HTML screen file from the WWW server 1 ″ to the date / time buffer 15, reads the signal representing the date and time of updating the HTML screen file from the date / time buffer 15, and reads the signal The status monitor 15 compares the date and time of the update with the date and time of the update. The status monitor 15 records the date and time of the HTML screen file change transmitted by the HTML screen generator 6 ′, and receives the date and time buffer transmission request from the status monitor 9 ′. The fact of the change of the HTML screen file and the date and time are transmitted to the status monitoring means 9 '. That is the date and time buffer.

Next, the operation will be described with reference to the flowchart of FIG. In the flowchart of FIG. 7, the same reference numerals are given to the same operation steps as the operation steps shown in the flowchart of FIG.

The WWW server 1 "performs a start process (step ST1), checks a change in the database 2 (steps ST3 and ST4), and updates data relating to the screen being displayed on the client-side display. In this case, an HTML screen creation process is performed (steps ST5 to ST5).
Up to 7), the first embodiment shown in the flowchart of FIG.
Since the operation is the same as that described above, detailed description of the operation is omitted.

In step ST8-1, the HTML screen creation means 6 'records the date and time when the HTML screen file was changed in the date and time buffer 15.

On the client side, the status monitoring means 9 'periodically reads the contents of the date and time buffer 15 in the WWW server 1 (step ST8-2), and compares the read date and time with the previously read date and time (step ST8-). 3).
If the read date and time is after the previous date and time, the status monitoring means 9 'transmits a signal indicating that the URL is specified to the URL specifying means 10, and the URL specifying means 10 specifies the URL and sends an HTML screen to the browser 11 The user is instructed to read the file again (step ST9). Browser 11
When the reread command signal is received, the updated HTML screen file is read from the HTML screen file storage means 7, and the display screen of the display is updated (step ST10). Thereafter, the process returns to step ST2 to determine whether or not the database 2 has been changed.
If the read date and time is the same as or earlier than the previous date and time, the process goes to step ST2 without performing any processing.
Return to

As described above, according to the fourth embodiment, by monitoring the date and time of the change of the HTML screen file, the HTML screen on the display on the client side is automatically displayed every time the HTML screen file is changed. The effect of being able to change and display is obtained.

[0039]

As described above, according to the first aspect of the present invention, the data change detecting means detects a change in the data provided by the server to the client, and generates an HTML screen every time the data change is detected. Since the means is configured to create an HTML screen and tell the browser to update the screen, there is no need for the user to request frequent re-reading to obtain information in real time, and unnecessary communication can be eliminated, and efficiency can be reduced. This has the effect of real-time display.

According to the second aspect of the present invention, since the data provided by the server to the client is stored in the database, there is no need to install application software for generating data in the server. There is.

According to the third aspect of the present invention, since the system is further provided with a database changing means for changing the contents of the database, the server itself can update the contents of the database.

According to the fourth aspect of the present invention, the date and time of the database change are stored in the buffer, and the state monitoring means periodically checks the contents of the buffer and displays the change on the client side when the change of the database is recognized. Since the screen change is requested, the HTML image on the client-side display can be automatically changed and displayed every time the HTML screen file is changed.

According to the fifth aspect of the present invention, since the data provided by the server to the client is generated by the application software, there is an effect that the data contents can be freely generated by the application software.

According to the sixth aspect of the present invention, the apparatus further comprises a display update instructing means for instructing an update of data generated by the application software. There is an effect that the display change of the display data generated by the application software installed in the server is instructed, and the HTML screen file changed based on this instruction can be automatically displayed on the display on the client side.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an information communication system according to Embodiment 1 of the present invention.

FIG. 2 is a flowchart showing an operation of the first embodiment in FIG. 1;

FIG. 3 is a block diagram showing a configuration of an information communication system according to Embodiment 2 of the present invention.

FIG. 4 is a flowchart showing an operation of the second embodiment in FIG. 3;

FIG. 5 is a block diagram showing a configuration of an information communication system according to a third embodiment of the present invention.

FIG. 6 is a block diagram showing a configuration of an information communication system according to a fourth embodiment of the present invention.

FIG. 7 is a flowchart showing an operation of the fourth embodiment of FIG. 6;

FIG. 8 is a block diagram showing a configuration of an example of a conventional information communication system.

[Explanation of symbols]

1, 1 ', 1 "WWW server (server), 2 databases, 3 database changing means, 4 database change detecting means (data change detecting means), 6, 6' HT
ML screen creation means, 8, 8 'client-side computer (client), 9, 9' status monitoring means, 12
Application software, 13 application output change detection means (data change detection means), 14 display update instruction means, 15 date / time buffer (buffer).

Claims (6)

[Claims] 1. An information communication system in which a client obtains information from a server, wherein the server detects a change in data provided to the client, and the data change detecting unit detects the change in the data. An information communication system comprising: an HTML screen creating unit that creates an HTML screen each time and notifies the browser to update the screen. 2. The information communication system according to claim 1, wherein data provided by the server to the client is stored in a database. 3. The information communication system according to claim 2, further comprising a database changing means for changing contents of the database. 4. A buffer for storing the date and time of change of the database, and state monitoring means for periodically checking the contents of the buffer and requesting a change of the display screen of the display on the client side when the change of the contents of the database is recognized. The information communication system according to claim 2 or 3, further comprising: 5. The information communication system according to claim 1, wherein the data provided by the server to the client is generated by application software. 6. The information communication system according to claim 5, further comprising a display update instruction means for instructing an update of data generated by the application software.