JP2002312231A - Document processing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the response speed in accessing the Web server in which a Web browser is packaged in the same device in a document processing device having the Web browser and the Web server. SOLUTION: The document processing device has a document server means for transmitting a documentary data in replay to the demand telegraphic message from a document browser means, the document browser means for receiving the response telegraphic message from the document server means and displaying the documentary data included in the response telegraphic message, and a cache means for recording the documentary data which the document browser means has received. In addition, the document processing device is provided with processing functions S301 to S306, wherein at the time when the document server means is initialized, in the case where a data base in which the documentary data provided by the document server is stored is searched to obtain the documentary data one by one, and the obtained documentary data are used for the display on the document browser, the documentary data are read out and registered in the cache means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document processing apparatus having a network communication function, and more particularly, to an HTML (Hyp).
The present invention relates to a document processing apparatus having both a document server function of transmitting document data described in erText Markup Language (erText Markup Language) or the like and a document browser function of displaying document data described in HTML or the like.

[0002]

2. Description of the Related Art Information transmission and service provision by a WWW (World Wide Web) server have become widespread. In general, information transmission and service providing methods are realized by transmitting document data described in HTML from a Web server to the Internet and supplying the same to a personal computer or the like equipped with a Web browser. In such a document data access method, HTTP (HyperTex
A communication protocol called "Transfer Protocol" is applied, and a document is transmitted through a plurality of servers called proxies.

Here, if a document is transmitted from a Web server every time a Web browser accesses document data, the transmission time is always long. In order to prevent this, Web browser and proxy server
The transmitted document is stored once, and the document data is not transmitted again from the Web server when accessed next time.
A technique called “cache” for reading and using document data stored at the time of previous access is known.
With this caching technique, the response speed (display speed and the like) when repeatedly accessing the same document can be improved.

Conventionally, a built-in Web server is mounted on an OA device or the like, a page for performing status display and various settings is provided from the Web server, and a status display and various types of information are provided from a Web browser connected to a network. There is a known technique for performing the setting. In recent years, a web browser is mounted on a mobile phone, a home appliance, or the like due to a reduction in the price of a liquid crystal display device, an increase in the speed of a CPU, an increase in a memory capacity, and the like. Accordingly, various kinds of information are provided.

[0005]

SUMMARY OF THE INVENTION Under such circumstances,
In the future, a Web browser and a Web server will be installed in the same device, various status displays and setting screens will be supplied from the Web server, and display and operation will be performed using the Web browser. It is possible to replace the function that was being performed. However, the response speed of the conventional operation panel is limited by the Web via a network.
Since a browser is much faster than accessing and displaying a Web server, the response speed needs to be improved to provide the above-mentioned alternative function to a user who is accustomed to a conventional operation panel.

Here, when the above-described caching technique is applied, it is possible to improve the display speed of the pages accessed from the second time onward, but there is a problem that it takes time for the first access. . In the cache technology, the storage capacity is limited by the maximum number of documents to be cached so that the cache does not consume the storage capacity without limitation. For example, if new document data is to be stored in the cache while the number of cached document data has reached a predetermined number, the oldest document data among the already cached document data is deleted, It is controlled to store a new document. Therefore, even in the second and subsequent accesses, the effect of the cache is lost for the document data deleted under a certain condition.

[0007] In view of such a problem, in the present invention, W
In a document processing apparatus having an Web browser and a Web server, a Web browser implemented on the same apparatus is used.
A first object is to improve the response speed when accessing a server. Further, in the present invention, it is a second object of the present invention to appropriately manage the storage capacity of a cache when improving the response speed when a Web browser accesses a Web server mounted on the same device.

[0008]

A document processing apparatus according to the present invention comprises: a document server means for transmitting document data in response to a request message from a document browser external to the apparatus or a document browser means inside the apparatus; Document server means for receiving a response message from the document server means or a document server means in the apparatus and displaying document data included in the response message; cache means for storing the document data received by the document browser means; A cache registration unit that is activated by the document server unit and registers document data provided by the document server unit in the cache unit in advance.

In this document processing apparatus, when the cache registering means is started from the document server means, the document data provided by the document server means is registered in the cache means in advance by the cache registering means. For this reason,
When the document data provided by the document server is displayed by the document browser, the document data to be displayed can be read from the cache, so that the access speed for displaying the document data is increased.

The document processing apparatus according to the present invention comprises: document server means for transmitting document data in response to a request message from a document browser external to the apparatus or a document browser means inside the apparatus; and a document server or apparatus external to the apparatus. Document browser means for receiving a response message from an internal document server means and displaying document data included in the response message, document data storage means for storing document data provided by the document server means, and document browser means. A cache unit that stores the received document data; and a cache registration unit that is activated by the document server unit and registers the document data stored in the document data storage unit in the cache unit in advance.

In this document processing apparatus, when the cache registering means is started from the document server means, the document data registered in the document data storing means is registered in the cache means in advance by the cache registering means. For this reason, when displaying the document data provided by the document server means by the document browser means, the document data to be displayed can be read from the document data storage means, so that the access speed when displaying the document data is high. Be transformed into

Further, the document processing apparatus according to the present invention comprises: document server means for transmitting document data in response to a request message from a document browser external to the apparatus or a document browser means inside the apparatus; Document browser means for receiving a response message from a document server means in the apparatus and displaying document data included in the response message, document data storage means for storing document data provided by the document server means, and document browser means And a cache registering means, which is activated by the document server means and stores reference information of the document data stored in the document data storing means in the cache means in advance.

In this document processing apparatus, when the cache registration means is started from the document server means, the reference information of the document data registered in the document data storage means is registered in the cache means in advance by the cache registration means. . Therefore, when displaying the document data provided by the document server means by the document browser means, the document browser means reads out the document data to be displayed from the document data storage means using the reference information registered in advance in the cache means. It becomes possible. Thereby, the access speed when displaying the document data is increased, and the amount occupied by the cache unit is reduced as compared with the case where the document data is registered as it is.

Further, the document processing apparatus according to the present invention comprises: a document server means for transmitting document data in response to a request message from a document browser external to the apparatus or a document browser means inside the apparatus; Document browser means for receiving a response message from the document server means inside the apparatus and displaying the document data included in the response message, cache means for storing the document data received by the document browser means, and activation from the document browser means And a determination means for determining whether or not the document data to be displayed by the document browser means is stored in the cache means. The determination means is activated by the document browser means. If it is determined that the document data to be stored is stored in the cache means, And a document reading means for reading the document data from the unit.

In this document processing apparatus, when the determination means and the document reading means are activated from the document browser means, first, it is determined whether or not the document data to be displayed by the document browser means is stored in the cache means. Means, and if it is determined that the document data is stored in the cache means, the corresponding document data is read from the cache means by the document reading means. By registering (storing) the document data to be displayed by the document browser means in the cache means in advance, it is possible to increase the access speed when reading the document data.

Further, the document processing apparatus according to the present invention comprises: document server means for transmitting document data in response to a request message from a document browser external to the apparatus or a document browser means inside the apparatus; Document browser means for receiving a response message from a document server means in the apparatus and displaying document data included in the response message, document data storage means for storing document data provided by the document server means, and document browser means A cache unit that stores the received document data, and a determination unit that is activated by the document browser unit and determines whether the document data to be displayed by the document browser unit is stored in the document data storage unit. A document that is started by the document browser means and is to be displayed by the document browser means in the determination means If the over data is determined to be stored in the document data storage unit, and a document reading means for reading the document data from the document data storage unit.

In this document processing apparatus, when the judgment means and the document reading means are activated from the document browser means, first, it is determined whether or not the document data to be displayed by the document browser means is stored in the document data storage means. Is determined by the determining means. If it is determined that the document data is stored in the document data storing means, the corresponding document data is read from the document data storing means by the document reading means. Thus, the document data to be displayed by the document browser means is directly read from the document data storage means, so that the access speed when reading the document data can be increased.

Further, the document processing apparatus according to the present invention comprises: document server means for transmitting document data in response to a request message from a document browser external to the apparatus or a document browser means inside the apparatus; Document browser means for receiving a response message from the document server means inside the apparatus and displaying document data included in the response message, cache means for storing the document data received by the document browser means, and storable by the cache means And a deletion unit that deletes, from the document data stored in the cache unit, document data other than the document data to be displayed by the document browser unit when the data amount exceeds an appropriate data amount.

In this document processing apparatus, when registering document data in the cache unit, if the amount of data that can be stored in the cache unit exceeds the limit, the document browser unit displays the document data in the document data stored in the cache unit. Document data other than the target document data is deleted by the deletion means. Accordingly, when the document data to be displayed by the document browser means is registered in the cache means in advance, the document data is retained without being deleted, so that the access speed can be kept high.

Further, the document processing apparatus according to the present invention comprises: document server means for transmitting document data in response to a request message from a document browser external to the apparatus or a document browser means inside the apparatus; Document browser means for receiving a response message from a document server means in the apparatus and displaying document data included in the response message, document data storage means for storing document data provided by the document server means, and document browser means Means for storing the received document data, document reading means for reading the document data stored in the document data storage means, and data stored in the cache means when the amount of data storable by the cache means is exceeded. Of the document data, the document data read from the document data storage unit by the document reading unit is deleted. And a deleting means for.

In this document processing apparatus, when registering the document data in the cache unit, if the amount of data that can be stored in the cache unit exceeds, the document reading unit of the document data stored in the cache unit is used by the document reading unit. The document data read from the data storage unit is deleted by the deletion unit. Thus, when the document browser means displays the document data in its own device, the access speed is maintained high by reading the corresponding document data directly from the document data storage means. Further, since it is not necessary to previously register the document data in the own device in the cache unit, the storage capacity of the cache unit is effectively used.

Further, the document processing apparatus according to the present invention comprises: document server means for transmitting document data in response to a request message from a document browser external to the apparatus or a document browser means inside the apparatus; Document browser means for receiving a response message from the document server means inside the device and displaying document data included in the response message, first communication means for communicating between programs inside the device, and a first communication means for communicating with an external device. (2) communication means, and switching means for switching between the first communication means and the second communication means according to the document data acquisition request destination when the document browser means makes a document data acquisition request; When the document server waits for a document data acquisition request, the document server includes a reception waiting unit that simultaneously waits for the first communication unit and the second communication unit.

In this document processing apparatus, when the document server means and the document browser means in the apparatus communicate with each other, the first communication means is selected, and communication is performed using the first communication means. Further, when the document browser means or the document server means inside the apparatus communicates with the document server or the document browser outside the apparatus, the second communication means is selected, and communication is performed using the second communication means. Accordingly, when the first communication unit is a communication unit that is faster than the second communication unit, the processing speed when the document browser unit inside the device acquires the document data from the document server unit inside the device is high. Be transformed into

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which a document processing apparatus according to the present invention is applied to a printer will be described below in detail with reference to the drawings. The document apparatus according to the present invention is not limited to application to a printer, but can be widely applied to other OA equipment and home electric appliances. The form of the document to be processed by the document processing apparatus according to the present invention includes various data such as text, images, programs, and the like.

FIG. 1 is a hardware configuration diagram of a printer device according to an embodiment of the present invention. In the illustrated hardware configuration, after the apparatus power is turned on, the CPU 1 reads out a program stored in the boot ROM 2 onto the RAM 3 and executes it. The program executed here reads out the program stored in the hard disk 4 onto the RAM 3 and executes it. The program executed here displays data on the display 5 or receives an input from the touch panel 6, and performs data processing interactively with the operator.

The touch panel 6 is installed in a state of being attached to the display surface of the display 5. In this touch panel 6, when the operator touches the panel surface, the coordinates are regarded as an input, and it is determined which part of the content displayed on the display 5 has been designated and processed. The hard disk 4 stores various information such as a document file and a setting information file, data, programs, and the like. The program stored in the hard disk 4 is
It communicates with other network communication devices connected to the LAN via a LAN (Local Area Network) interface 7 and also communicates with other network communication devices from the LAN via the Internet.

FIG. 2 is a system configuration diagram in which the printer device according to the embodiment of the present invention operates. The printer device 10 according to the present embodiment receives a request message E1 for document acquisition from a browser mounted on an external network communication device (a personal computer or the like) 13 via the LAN 11 and the Internet 12, and receives the received request message E1. The document data requested by E1 is used as a response E2,
11 and via the Internet 12 to the browser of the request source (network communication device 13). The printer device 10 has a browser function in its own device, transmits a document acquisition request message E1 to the server device 14 via the LAN 11 and the Internet 12, and transmits the response message E2 from the server device 14 as a response E2. The received document data is received and displayed.

[First Embodiment] FIG. 3 is a software configuration diagram of a printer device according to a first embodiment of the present invention.
In the illustrated software configuration, the Web server unit (document server means) 21 is an Ethernet (registered trademark).
H via the control unit 22 and the TCP / IP protocol 23
At the same time as receiving the TTP request message E1, the document data is acquired from the document database D102 of the hard disk 4. Further, the Web server unit 21 converts the document data of the document file acquired from the hard disk 4 into a TCP file.
Response message E2 of HTTP via / IP protocol 23
Send as

Web browser section (document browser means) 2
Reference numeral 4 reads the browser setting information file D103 stored in the hard disk 4, and changes the operation. For example, the Web browser unit 24 obtains the URL of the document to be displayed first after power-on from the browser setting information file D103.
(Unified Resource Locator) is acquired. The Web browser unit 24 transmits the Web via the TCP / IP protocol 23.
A request message E1 for acquiring a document is transmitted to the server 21 and the document data transmitted from the Web server 21 is received as a response E2 and displayed on the display 5. Also,
The Web browser unit 24 receives an input from the touch panel 6 and transmits a request message E1 for acquiring a document indicated by the hyperlink when a hyperlink in the displayed document is designated.

It should be noted that the Web server unit 21 and the Web browser unit 24 include an Ethernet control unit 22 and a TC
It is also possible to communicate with external network communication devices 13 and 14 via the P / IP protocol 23.

The Web browser unit 24 stores the received document data in a cache (cache unit) D101 in the hard disk 4, and stores the received document data in the cache D101.
When displaying the document data stored in the TCP / I
The document data is read out directly from the cache D101 and displayed without sending the document acquisition request message E1 via the P protocol 23. The speed at which document data is read from the cache D101 is higher than the speed at which document data is received via the TCP / IP protocol 23. Therefore, the display of the document data read from the cache D101 is performed at high speed.

FIG. 4 shows a Web according to the first embodiment of the present invention.
FIG. 4 is an operation flowchart of the browser unit 24. First, a browser initialization process related to the initialization of the display 5 and the like is executed (S101). Next, the browser setting information file D1
03 that specifies the document data for initial display
fied Resource Locator) (S102). Next, it is checked whether or not the document data specified by the acquired URL is stored in the cache D101 (S10).
3).

If the document data specified by the URL for the initial display is stored in the cache D101 (S104: Yes), the document data is read from the cache D101 (S105), and it is read from the cache. Is stored in the flag (S106), and the read document data is displayed (S112).

If the document data specified by the URL for the initial display is not stored in the cache D101 (S104: No), the previously acquired URL is the document data in the local device (local host). That is, the Web server unit 2
It is determined whether or not the data indicates document data stored in the document database (document data storage means) D102 of the hard disk 4 for providing 1 (S107). At this time, the path in the URL (after “: //”) is “loc
If it starts with "alhost" or "127.0.0.1" or the like, it is determined that the document data is in its own device.

If the document data is determined to be the document data of the own apparatus (S107: Yes), the document data is read from the document database D102 (S116). At this time, if the document data is normally read (S117: Ye
s), and displays the read document data (S11).
2). If the data is not read normally (S11
7: No), and when it is determined that the document data is not document data of the own apparatus (S107: No), TCP / IP
A request message E1 for document acquisition is transmitted to the external server device 14 specified by the URL via the protocol 23 (S
108). Here, "localhost" or "12
In the case of a path starting with “7.0.0.1” or the like, transmission is performed to the loopback address “127.0.0.1”. As a result, the telegram is looped back and transmitted within the TCP / IP protocol 23.

Further, a response E2 is received (S109). At this time, if the received response E2 is an affirmative response (S110: Yes), the fact that it has not been read from the cache is stored in a flag (S111), and the document data included in the affirmative response is displayed (S112).
If the received response E2 is a negative response (S
110: No), an error is displayed (S118).

After displaying the document data in step S12, if the flag indicating that the document data has not been read from the cache is set (S113: No), the displayed document data is registered in the cache D101 (S1).
14). Thereafter, a new URL input from the touch panel 6 is obtained, or a URL indicated by a hyperlink included in the displayed document is obtained (S11).
5). Thereafter, the processing from step S103 is repeated for the URL acquired in step S115.

In the operation flow shown in FIG.
If it is determined that the document data specified by the RL is stored in the cache D101 (S114: Yes),
The document data corresponding to the URL must be cached D101.
However, it may be determined whether to read the document data from the cache D101 based on the management attribute of the cache D101 or the attribute (for example, the expiration date) of the document data stored in the cache D101. .

In the operation flow shown in FIG. 4, the document data displayed in step S112 is stored in the cache D1.
01 (step S11)
3: No), the document data is registered in the cache D101 in step S114, but it may be determined whether to register the document data in the cache D101 according to the attribute of the document data. Further, the cache D101
When new document data registered in the cache D is received, the new document data obtained by the reception is used in accordance with the determination result based on the attribute of the document data, for example.
The document data registered in 101 may be overwritten (updated).

In the operation flow shown in FIG. 4, after the cache check is performed in step S103, if it is determined that the document data corresponding to the URL is in the own device (step S107: Yes), The document data is read out by searching the document database D102. This method is effective when access to the cache D101 is faster than access to the document database D102.

On the other hand, when the access speed to the cache D101 is lower than the access speed to the document database D102, the search of the document database D102 is executed prior to the inspection of the cache D101 (ie, FIG. By executing the processing of step S107 in step 4 before the processing of step S103), access can be speeded up.

Further, the document database D102 may be searched without determining whether the document data is the document data of the own apparatus, and the cache D101 may be checked when there is no document data there. That is, first, the process of step S116 is executed without executing the process of step S107, and when the reading of the document data is an error (S11
7: No), a request message E for document acquisition in step S108
1 may be transmitted. This method is effective when it is difficult to determine the URL indicating the document data of the own device.

The document data provided by the Web server unit 21 is stored in the
When the document data is generated by the program of the web server unit 21, the document data is not read from the document database D102.
116 and S117 are deleted.

FIG. 5 shows a Web according to the first embodiment of the present invention.
FIG. 7 is an operation flowchart of the server unit 21. First, a server initialization process is performed (S201). Details of the initialization process will be described later. Next, a request message E1 for acquiring a document from a Web browser inside or outside the device is received (S20).
2) Read out the document data specified by the received request message E1 (S203). At this time, when the data is read out normally (S204: Yes), the acknowledgment is transmitted with the document data added (S205). If the data has not been read normally (S204: No), the content of the error is transmitted as a negative response (S206).

FIG. 6 shows a Web according to the first embodiment of the present invention.
Initialization process of server unit 21 (step S201 in FIG. 5)
FIG. 7 is an operation flow diagram of cache registration included in FIG. First, the document database D102 storing the document data provided by the Web server unit 21 is accessed, and one document data stored in the document database D102 is obtained by searching (S301). Here, the document database D102 may be a database in which the management information of the document data is collected separately from the part storing the document data itself.

Next, it is checked whether the search in the document database D102 has been completed (S302). Next, the document data previously obtained from the meta information in the document data, the attributes of the document data, a part of the document name, the directory in which the document data is stored, and the like are used for display and the like by the Web browser unit 24 inside the apparatus. Or not, that is, W
It is determined whether or not the web browser unit 24 is to be displayed (S303). This determination may be made based on the management information described above.

The previously acquired document data is stored in the Web
b If not used by the browser unit 24 (ie,
If the document data is used by the external web browser (S304: No), the process returns to step S301 without registering the document data in the cache D101. On the other hand, the previously acquired document data is stored in the Web
If it is used by the browser unit 24 (S30
3: Yes), the document data is read out (S30).
4), register it in the cache D101 (S305). Next, it is checked whether the amount of document data or the number of document data registered in the cache D101 does not exceed the upper limit. If the upper limit is exceeded (S306: Yes),
At that point, the process ends. The above process is repeated until the search in the document database D102 is completed.

Here, when registering the document data in the cache D101, an attribute or management information indicating that the registered document data is to be displayed on the console, that is, the Web browser unit 24 in the same device is added. Is also good. Also, instead of registering all the document data to be displayed by the Web browser unit 24 in the same device in the cache D101, only a part of the document data (for example, document data with a high display frequency) is registered. Is also good.

At this time, the attribute of the document data, the data amount,
At least one piece of the additional information may be acquired, and it may be determined whether to register the information in the cache D101 based on the acquired information. Or, cache D10
It is also possible to provide a management file for explicitly managing the document data to be registered in the storage device 1 and determine whether or not registration is possible.

In the procedure for registering the document data stored in the document database D102 in the cache D101, the document data itself is stored in the cache D1.
01, the reference information of the document data in the document database D102 (for example, U
RL) may be registered in the cache D101. In this case, in the operation flow of the Web browser unit 24 (FIG. 4), in step S105, the cache D1
When reference information is registered in 01, the document data from the document database D102 is directly read based on the reference information.

Thus, the cache data D101 is stored in the cache D101 by the document data stored in the document database D102.
Can be reduced. In this case, it is not necessary to determine whether or not the URL indicates the document data in the own device (the process of S107), so that the process of FIG. 4 can be simplified.

FIG. 7 shows a Web according to the first embodiment of the present invention.
FIG. 11 is a detailed operation flowchart of a cache registration process (step S112 in FIG. 4) of the browser unit 24. First, when registering document data in the cache D101, it is determined whether the amount of data that can be stored in the cache D101 of the registration destination does not exceed whether there is a sufficient free space in the cache D101 or whether the data is already registered in the cache D101. It is checked whether the number of existing document data does not exceed the upper limit of the number of document data that can be registered (S401). The inspection of the cache D101 may be performed for only one of the free space and the number of document data.

If there is sufficient free space in the cache D101 and the number of document data has not reached the upper limit (step S402: Yes), the document data is additionally registered in the cache D101 (S407).

On the other hand, if the free space of the cache D101 is insufficient or the number of document data exceeds the upper limit (S4).
02: No), the document data registered (stored) in the cache D101 at that time is searched (S40).
3). Next, based on the attribute of the retrieved document data, it is determined whether the source of the document data is in the own device, that is, whether the document data is for a console (a target to be displayed by the Web browser unit 24 in the same device). Judge. If it is determined that the document data is not for the console (S405: No), the previously searched document data is deleted from the cache D101 (S405).
406). If it is determined that the document data is for the console (S405: Yes), the search for the next document data is continued without deleting the previously searched document data from the cache D101.

When the document data is deleted from the cache D101 in step S406, the processing is executed again from the check of the free space or the number of document data. If the document data to be deleted does not exist in the cache D101, (S
404: Yes), the processing ends without executing the deletion processing of the document data registered in the cache D101. As a result, the document data for the console is stored in the cache D10.
It is not deleted from 1. Therefore, even in subsequent accesses, the console document data is read from the cache D101, so that an increase in access speed can be maintained.

In the operation flow of FIG. 7, only whether or not the document data registered in the cache is for console is used as a criterion for deletion.
Whether or not to be deleted may be determined according to attributes such as the number of accesses, the period since the last access, and the expiration date of the cache, and management information. In this case, the sequential reading of the document data may be repeated a plurality of times for each criterion.

In the case where the Web browser unit 24 can read out the document data by directly accessing the document database D102 and the difference between the access speed to the cache D101 and the access speed to the document database D102 is small, , Step S40
The condition determination of 5 may be reversed. That is, the document data of the own device is preferentially deleted from the cache D101, and if it is not the document data of the own device, the cache D1 is deleted.
01 may be preferentially held. In the case of reading the document data directly from the document database D102, the read document data of the own device (for the console) is deleted from the cache D101 so that the access speed is kept high and the cache D1 is read.
01 can be effectively used.

[Second Embodiment] FIG. 8 is a software configuration diagram of a printer device according to a second embodiment of the present invention.
In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals and described. First, in the software configuration shown in FIG. 3, the communication between the Web server unit 21 and the Web browser unit 24 inside the device is performed by the TCP / IP protocol 23.
8 is realized by using the loopback function of FIG.
In the software configuration shown in FIG. 1, communication between the Web server unit 21 and the Web browser unit 24 is realized using the inter-program communication function of the socket interface 25.
The socket interface 25 is a web server unit 21
And the Web browser unit 24 uses the TCP / IP protocol 2
3 when communicating with an external device.

FIG. 9 shows a Web according to the second embodiment of the present invention.
FIG. 4 is an operation flowchart of the browser unit 24. First, in the initialization processing, a socket descriptor for network communication is generated (S501), and a socket descriptor for inter-process communication is generated (S502). These steps S50
1, the processing of S502 may be performed in an arbitrary order (the processing of S502 is performed and then the processing of S501 is performed). In socket programming generally used in operating systems such as Unix, a socket for network communication is called “PF_INET (or AF_
INET) is a type protocol family (or address family) defined by a macro, and a process communication socket is a protocol family (or address family) defined by a macro "PF_UNIX (registered trademark) (or AF_UNIX)". Corresponding to

Next, the browser setting information file D103
Then, a URL specifying the document data for initial display is acquired from (step S503). Next, it is determined whether the document data specified by the acquired URL is the document data in its own device (local host), that is, the document data provided by the Web server unit 21 (S504). Here, the path in the URL (after “: //”) is “localhost” or “1”.
If it starts with “27.0.0.1” or the like, it is determined that the document data is in its own device.

If it is determined that the document data is not document data of the own device (S504: No), the socket descriptor for network communication generated in step S501 is selected (S5).
05). If it is determined that the data is document data of the own device (S504: Yes), the socket descriptor for inter-process communication generated in step S502 is selected (S5).
06). Thereby, the socket descriptor is selectively switched according to whether the document data specified by the URL is the document data in the own device. Thereafter, the request message E1 is transmitted using the selected socket descriptor (S50).
7), the response message E2 is received using the similarly selected socket descriptor (S508).

Here, when the socket descriptor for network communication is selected, the messages E1 and E2 are transmitted and received via the TCP / IP protocol 23 and the Ethernet controller 22 from the socket interface 25 in FIG. When the socket descriptor for inter-process communication is selected, the messages E1 and E2 are loop-back transferred in the socket interface 25 in FIG.

The response message E2 received in step S508
Is a positive response (S509: Yes), the document data included in the positive response is displayed (S510). If the received response message E2 is a negative response (S509: No), an error is displayed. After that, a new URL input from the touch panel 6 is acquired or
Alternatively, the URL indicated by the hyperlink included in the displayed document is acquired (S512). Thereafter, the processing from step S504 is repeated for the URL acquired in step S512.

The operation flow of the Web server unit 21 according to the second embodiment of the present invention is the same as the operation flow of the first embodiment shown in FIG. However, in the operation flow of the Web server unit 21 according to the second embodiment, step S
In the initialization processing of 201, a socket descriptor for network communication and a socket descriptor for inter-process communication are generated.

In the reception of the document acquisition request in step S202, reception is waited for using both the previously generated socket descriptor for network communication and the socket descriptor for interprocess communication, and the document is acquired from one of them. Is received. By simultaneously waiting for reception of both the socket descriptor for network communication and the socket descriptor for inter-process communication, the request message E1 for document acquisition is transmitted from the external network communication device 13. Receives this using the network communication socket descriptor, and sends a document acquisition request message E1.
Is transmitted from the Web browser unit 24 inside the apparatus, this can be received using the socket descriptor for inter-process communication. Generally, in an operating system such as Unix, “select” is used.
It is possible to simultaneously wait for reception with a plurality of socket descriptors by using a function such as. Further, in the document transmission in step S205 and the error transmission in step S206, transmission is performed using the socket descriptor that has received the request message E1 in step S202.

In the second embodiment, when the Web server 21 and the Web browser 24 inside the apparatus communicate with the network communication devices 13 and 14 outside the apparatus, or when the Web server 21 and the Web server 21 inside the apparatus communicate with each other. Although the case where the socket interface 25 is used in any of the cases where the browser unit 24 communicates is illustrated, another interface such as a TLI (Transport
Layer Interface) may be used. Also,
Web server unit 21 and Web browser unit 24 inside the device
The communication may be performed using a communication means such as a message queue or a pipe.

[0067]

As described above, according to the document processing apparatus of the present invention, in the apparatus having the document browser means and the document server means, the access speed when displaying the document data provided by the document server means. And the response speed can be greatly improved. Also, since no special settings or functions are required for the document browser,
It can be easily realized.

Further, according to the document processing apparatus of the present invention, the registration of the document data in the cache means is performed collectively during the initialization processing of the document server means, so that the response speed is improved from the first access. can do.

Further, according to the document processing apparatus of the present invention, the storage capacity of the cache unit is appropriately managed while maintaining the high access speed when displaying the document data provided by the document server unit. be able to.

Further, according to the document processing apparatus of the present invention, it is possible to increase the processing speed when the document browser means inside the apparatus acquires document data from the document server means inside the apparatus.

[Brief description of the drawings]

FIG. 1 is a hardware configuration diagram of a printer device according to an embodiment of the present invention.

FIG. 2 is a system configuration diagram in which the printer device according to the embodiment of the present invention operates.

FIG. 3 is a software configuration diagram of the printer device according to the first embodiment of the present invention.

FIG. 4 is an operation flowchart of a Web browser unit according to the first embodiment of the present invention.

FIG. 5 is an operation flowchart of the Web server unit according to the first embodiment of the present invention.

FIG. 6 is an operation flowchart of cache registration included in the initialization processing of the Web server unit according to the first embodiment of the present invention.

FIG. 7 is a detailed operation flowchart of cache registration processing of the Web browser unit according to the first embodiment of the present invention.

FIG. 8 is a software configuration diagram of a printer device according to a second embodiment of the present invention.

FIG. 9 is an operation flowchart of a Web browser unit according to the second embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... CPU, 2 ... Boot ROM, 3 ... RAM, 4 ... Hard disk, 5 ... Display, 6 ... Touch panel, 7
... LAN interface, 10 ... Printer device, 11
... LAN, 12 ... Internet, 21 ... Web server section, 22 ... Ethernet control section, 23 ... TCP / IP protocol, 24 ... Web browser section, 25 ... Socket interface, D101 ... Cache, D102 ... Document database, D103 ... Browser setting Information file

Claims (14)

[Claims] 1. A document server for transmitting document data in response to a request message from a document browser outside the apparatus or a document browser inside the apparatus, and a response from a document server outside the apparatus or a document server inside the apparatus. Document browser means for receiving a message and displaying the document data included in the response message; cache means for storing the document data received by the document browser means; activated by the document server means; And a cache registering means for registering the document data provided by the means in the cache means in advance. 2. The document processing apparatus according to claim 1, wherein the cache registration unit registers, in the cache unit, the document data to be displayed by the document browser unit, out of the document data provided by the document server unit. A document processing apparatus. 3. The document processing apparatus according to claim 1, wherein the cache registration unit acquires at least one of an attribute, a data amount, and additional information of the document data provided by the document server unit. A determination unit configured to determine whether to register the document data in the cache unit based on information of the document data acquired by the acquisition unit. 4. A document server means for transmitting document data in response to a request message from a document browser outside the apparatus or a document browser means inside the apparatus, and a response from a document server outside the apparatus or a document server means inside the apparatus. Document browser means for receiving a message and displaying document data included in the response message, document data storage means for storing document data provided by the document server means, and storing the document data received by the document browser means A document processing apparatus, comprising: a cache unit that performs a registration process; and a cache registration unit that is activated by the document server unit and registers document data stored in the document data storage unit in the cache unit in advance. 5. The document processing apparatus according to claim 4, wherein the cache registering unit caches the document data to be displayed by the document browser unit among the document data stored in the document data storage unit. A document processing apparatus characterized in that the document processing apparatus is registered in the document processing apparatus. 6. A document server for transmitting document data in response to a request message from a document browser outside the apparatus or a document browser inside the apparatus, and a response from a document server outside the apparatus or a document server inside the apparatus. Document browser means for receiving a message and displaying document data included in the response message, document data storage means for storing document data provided by the document server means, and storing the document data received by the document browser means Document processing characterized by comprising: a cache unit for performing the above operation; and a cache registering unit that is activated by the document server unit and registers in advance the reference information of the document data stored in the document data storage unit in the cache unit. apparatus. 7. The document processing apparatus according to claim 6, wherein the cache registration unit stores reference information of the document data to be displayed by the document browser unit among the document data stored in the document data storage unit. A document processing device, wherein the document is registered in the cache unit. 8. A document server for transmitting document data in response to a request message from a document browser outside the apparatus or a document browser inside the apparatus, and a response from a document server outside the apparatus or a document server inside the apparatus. Document browser means for receiving a message and displaying document data included in the response message; cache means for storing the document data received by the document browser means; Determining means for determining whether or not document data to be displayed by the means is stored in the cache means; and a document activated by the document browser means and displayed by the document browser means in the determining means. If it is determined that the data is stored in the cache means, Document processing apparatus characterized by the Interview means and a document reading means for reading document data. 9. A document server for transmitting document data in response to a request message from a document browser outside the apparatus or a document browser inside the apparatus, and a response from a document server outside the apparatus or a document server inside the apparatus. Document browser means for receiving a message and displaying document data included in the response message, document data storage means for storing document data provided by the document server means, and storing the document data received by the document browser means A caching unit that performs the determination, and a determination unit that is activated by the document browser unit and determines whether document data to be displayed by the document browser unit is stored in the document data storage unit. From the document browser means to be displayed by the determination means. If the data is determined to be stored in the document data storage unit, a document processing apparatus characterized by comprising a document reading means for reading the document data from the document data storage unit. 10. The document processing apparatus according to claim 9, wherein the determination unit stores the document data in the document data storage unit based on location information of the document data to be displayed by the document browser unit. A document processing device for determining whether or not the document processing is performed. 11. A document server for transmitting document data in response to a request message from a document browser outside the apparatus or a document browser inside the apparatus, and a response from a document server outside the apparatus or a document server inside the apparatus. Document browser means for receiving a message and displaying the document data included in the response message, cache means for storing the document data received by the document browser means, and when the amount of data storable by the cache means exceeds A document processing device, further comprising: a deletion unit that deletes, from the document data stored in the cache unit, document data other than the document data to be displayed by the document browser unit. 12. A document server for transmitting document data in response to a request message from a document browser outside the apparatus or a document browser inside the apparatus, and a response from a document server outside the apparatus or a document server inside the apparatus. Document browser means for receiving a message and displaying document data included in the response message, document data storage means for storing document data provided by the document server means, and storing document data received by the document browser means Cache means for reading, document reading means for reading the document data stored in the document data storage means, and when the amount of data storable by the cache means exceeds, the document data stored in the cache means Deleting the document data read from the document data storage means by the document reading means. Document processing device, comprising a deleting means for. 13. A document server for transmitting document data in response to a request message from a document browser outside the apparatus or a document browser inside the apparatus, and a response from a document server outside the apparatus or a document server inside the apparatus. Document browser means for receiving a message and displaying document data included in the response message; first communication means for communicating between programs inside the device; second communication means for communicating with an external device; Document processing characterized by comprising a switching means for switching between the first communication means and the second communication means in accordance with a document data acquisition request destination when the means makes a document data acquisition request. apparatus. 14. The document processing apparatus according to claim 13, wherein when said document server waits for a document data acquisition request, said first communication means and said second communication means simultaneously wait for reception. A document processing apparatus characterized in that: