JP2013061836A - Server, data processor, data processing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To notify a user of a reason of processing interruption in a data processor.SOLUTION: A server comprises: a request processing unit for transmitting processing data to a data processor in response to a transmission request of the processing data by HTTP connection from the data processor; a disconnection processing unit for disconnecting the HTTP connection when an error occurs before the data processor completes processing using the processing data, and in response to reception of notification of error information including information indicating processing interruption due to the error and information indicating contents of the error from the data processor by connection other than the HTTP connection; a storage unit for storing the error information in association with the data processor and the processing; and a notification unit for notifying a user of the fact that the processing in the data processor is interrupted due to the error and the error contents on the basis of the saved error information.

Description

  The present invention relates to a server, a data processing device, and a data processing method, and to a technique for executing processing in response to a request acquired from a user via a server in a cloud computing system.

  2. Description of the Related Art Conventionally, a cloud computing system that provides a service that allows a specific printer to execute printing by sending an e-mail is known (for example, Patent Document 1). This cloud computing system (hereinafter simply referred to as a printing system) includes a server that generates print data corresponding to a specific printer based on an e-mail when a specific e-mail is received, and a specific registered in the server The printer acquires print data from the server and executes printing. Therefore, the user of the printing system can use the printer registered in the printing system even when the printer driver is not installed in a client terminal such as a PC (Personal Computer) or a smartphone.

JP 2008-71257 A

  In such a printing system, the server generates print data based on the email sent by the user, notifies the printer of the existence of the print job, and the printer that received the notification sends the print data to the server. Printing is performed while acquiring print data by making a transmission request. Since the memory size installed in the printer is limited from the viewpoint of cost, the print data of the part that has been printed is discarded from the memory and a memory area is secured for the part of the print data to be processed next. . Since the printer performs printing while acquiring print data in this way, if an error occurs in the printer during print data acquisition, printing cannot be continued and printing data cannot be discarded from memory. The memory eventually fills up with unprocessed print data, and the print data transmitted subsequently cannot be received.

When an error occurs in the printer, conventionally, the operation is to end printing because an error has occurred, and the operation after the occurrence of the error is not particularly considered. Since users of this printing system are expected to use the printer by sending e-mail from a remote location away from the printer, the user at the remote location knows why the printing ended halfway in the past. I couldn't.
The present invention has been made in view of the above problems, and an object of the present invention is to notify a user of the reason for interruption of processing in a data processing apparatus.

  A server for achieving the above object includes a request processing unit, a disconnection processing unit, a storage unit, and a notification unit. The request processing unit transmits the processing data to the data processing device in response to the transmission request of the processing data from the data processing device via the HTTP connection. The disconnection processing unit generates an error before the data processing apparatus completes the processing using the processing data, and error information including information indicating processing interruption due to the error and information indicating the content of the error is the HTTP connection. The HTTP connection is disconnected in response to the notification from the data processing apparatus through a connection different from the above. The storage unit stores the error information in association with the data processing device and the process. Based on the stored error information, the notification unit notifies the user that the processing of the data processing device has been interrupted due to an error and the content of the error. The notification unit is not particularly limited as long as it can be notified to the user via the server.

  By using the notification unit of the server, the user can recognize the error that caused the processing interruption in the data processing device even from a remote place away from the data processing device. In addition, by disconnecting the HTTP connection used for transmitting the processing data in response to the notification of the error information, it is possible to quickly eliminate the load on the server in order to maintain the HTTP connection. The “connection different from the HTTP connection” may be an HTTP connection established separately from an HTTP connection for transmitting a processing data transmission request and processing data corresponding to the transmission request. Alternatively, a connection using another protocol may be used as long as arbitrary information can be transmitted from the data processing apparatus to the server at an arbitrary timing.

  The server for achieving the above object may further include an e-mail receiving unit, a print data generating unit, and a print job notifying unit. The e-mail receiving unit is a printing apparatus as a data processing apparatus and receives an e-mail addressed to an e-mail address assigned to a specific printing apparatus. The print data generation unit generates print data as processing data based on the received electronic mail. The print job notification unit notifies the printing apparatus of the existence of a print job including the generated print data through an XMPP connection as a connection different from the HTTP connection. When the server further includes an e-mail receiving unit, a print data generation unit, and a print job notification unit, the storage unit stores error information in association with the printing device and the print job, and the notification unit stores the error information. Based on the error information, the user may be notified of the fact that the print job in the printing apparatus has been interrupted due to an error and the content of the error.

  An XMPP connection established with the printing apparatus is used to notify the existence of a print job corresponding to the print data generated based on the e-mail transmitted to the e-mail address assigned to the printing apparatus. By receiving the error information notification, the server and the server are compared with the case where another connection different from the XMPP connection and the above-described HTTP connection is newly established with the printing apparatus and the error information notification is received. The processing burden for establishing a new connection in both printing apparatuses can be reduced.

  A data processing apparatus for achieving the above object includes a requesting unit, a receiving unit, a processing unit, and a notification unit. The request unit makes a transmission request for processing data to the server through an HTTP connection. The receiving unit receives the processing data transmitted from the server through the HTTP connection in response to the transmission request. The processing unit sequentially acquires the received processing data and performs processing using the processing data. When an error occurs before the processing using the processing data is completed, the notification unit sends error information including information indicating processing interruption due to the error and information indicating the content of the error separately from the HTTP connection. Notify the server with a connection.

  Since the data processing apparatus employs such a configuration, error information can be notified to the server when an error occurs. As a result, it is possible to prompt the server to disconnect the HTTP connection that is used to transmit the processing data and cannot continue receiving the processing data due to an error. By disconnecting the HTTP connection in response to the notification of the error information, the server can quickly eliminate the load on the server in order to maintain the HTTP connection. In addition, information (error information) for notifying the user of the error can be passed to the server.

  Note that the function of each means described in the claims is realized by hardware resources whose function is specified by the configuration itself, hardware resources whose function is specified by a program, or a combination thereof. The functions of these means are not limited to those realized by hardware resources that are physically independent of each other. In addition, the server is not limited to a configuration including a single computer device, but includes a configuration in which a plurality of computer devices cooperate to operate as the server. Furthermore, the present invention can be realized as a method, a computer program, and a recording medium for the program. Of course, the recording medium for the computer program may be a magnetic recording medium, a magneto-optical recording medium, or any recording medium developed in the future.

1 is a block diagram showing a printing system according to an embodiment of the present invention. 5 is a sequence chart of a printing sequence according to the embodiment of the present invention. The schematic diagram which shows the connection concerning 1st embodiment. The schematic diagram which shows the alerting | reporting example of the error information concerning 1st embodiment. The schematic diagram which shows the connection concerning other embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected to the corresponding component in each figure, and the overlapping description is abbreviate | omitted.

1. 1. First embodiment 1-1. Configuration FIG. 1 is a block diagram showing the overall configuration of a printing system including a printer (corresponding to a data processing apparatus and a printing apparatus) 3 and a server 2 in this embodiment. The printing system shown in FIG. 1 corresponds to a destination e-mail address when an e-mail addressed to an e-mail address associated with each of a plurality of printers registered in the server 2 is transmitted from an arbitrary communication terminal 1. The attached printer 3 realizes a function of printing an attached file or text of an e-mail. The server 2, printer 3, and communication terminal 1 are connected to the Internet 4.

  The server 2 includes one or more computers, and includes an application server 21, an SMTP server 22, an HTTP server 23, an XMPP server 24, and an HTTP server 25. Each of the application server 21, SMTP server 22, HTTP server 23, XMPP server 24, and HTTP server 25 includes a CPU, a RAM, a ROM, a hard disk device, a communication unit, and an internal interface for connecting them. The communication unit converts a signal received from the Internet via the LAN according to the protocol and transmits the converted signal to the internal bus, converts a signal received from the internal bus according to the protocol and transmits the converted signal to the Internet via the LAN. Each server included in the server 2 is connected to a LAN and can communicate with each other.

  The SMTP server 22 has a function of transmitting and receiving an e-mail addressed to an e-mail address assigned to the printer 3 registered in the application server 21 based on SMTP (Simple Mail Transfer Protocol). Function. The HTTP server 23 has a function of communicating with the printer 3 based on HTTP (Hyper Text Transfer Protocol), and functions as a “request processing unit” that transmits print data (processing data) to the printer 3. Further, the HTTP server 23 has a function of disconnecting an HTTP connection with the printer 3 based on error information (described later) transmitted from the printer 3, and also functions as a “disconnection processing unit”. The XMPP server 24 has a function of communicating with the printer 3 based on XMPP (Extensible Messaging and Presence Protocol), and functions as a “print job notification unit” that transmits a print job notification to the printer 3.

  When the application server 21 receives an e-mail based on SMTP, the application server 21 generates print data corresponding to the corresponding printer 3 based on the e-mail (corresponding to a “print data generation unit”), and responds based on XMPP. It has a function of transmitting a print job notification to the printer 3 and transmitting the generated print data to the printer 3 in response to a transmission request from the printer 3 based on HTTP. The application server 21 has a function of storing and managing an e-mail address, an XMPP login password, a management page URL, and a management page password corresponding to the printer 3 in association with the internal ID corresponding to the printer 3. Further, the application server 21 has a function of storing the status of the print job and various attribute information corresponding to the print job for each print job requested from the printer 3, and also functions as a “storage unit”. The print job status is information indicating the execution status of the print job, and is updated based on error information notified from the printer 3 when various errors occur in the printer 3, information notified from the printer 3 at the end of printing, or the like. The More specifically, for example, the status of the print job is added to the history record database of the application server 21 as history information. The various errors include, for example, an error indicating that a print medium such as a printing paper or an OHP sheet has run out, an error indicating that a colorant such as ink has run out, a paper jam error, and the like. Information indicating the content of such an error is also added to the history information and stored. The management page is a WEB page for the user to browse and edit the information stored for each printer. In the present embodiment, in particular, for each print job requested to the printer 3, a WEB page for notifying the user (viewer) of the status (for the print job in which an error has occurred, also notifies the contents of the error). Will be described. The HTTP server 25 has a function of generating and publishing display data for displaying the management page, and functions as a “notification unit”.

  The printer 3 has a function of receiving print data from the server 2 using HTTP and executing printing when the server 2 is notified of the presence of a print job through a constant connection with the server 2 using XMPP. Accordingly, the printer 3 includes a communication unit 34 for transmitting and receiving various data via the Internet 4 in addition to the components of a normal printer such as a controller 31 having a CPU, ROM, RAM, and the like, and a printing unit 35. ing. The communication unit 34 converts the signal received from the Internet 4 via the LAN according to the protocol and sends it to the internal bus, and converts the signal received from the internal bus according to the protocol and sends it to the Internet via the LAN. The ROM of the controller 31 stores various computer programs such as a communication program and a printing program that are read into the RAM and executed by the CPU. Various functions of the printer 3 are realized by the CPU executing these computer programs.

  The communication program is a program for performing communication with the server 2 according to a communication protocol such as TCP / IP, HTTP, XMPP or the like. It should be noted that the controller 31 has acquired in advance information necessary for connecting to the server 2 using HTTP or XMPP prior to a print sequence described later. The reception buffer 32 is a memory that stores data received from the outside by the controller 31 that executes the communication program via the communication unit 34, and is a memory that temporarily stores various data such as print data. The controller 31 and the communication unit 34 that execute the communication program correspond to a “request unit” that makes a print data transmission request to the server 2. The controller 31, the communication unit 34, and the reception buffer 32 that execute the communication program correspond to a “reception unit” that receives print data transmitted from the server 2.

  The print program reads the print data stored in the reception buffer 32, transfers it to the processing buffer 33, performs pre-print processing, converts the print data into data in a format suitable for printing in the printer 3, and converts the converted data. This is a program having a function of controlling the printing unit 35 based on data and performing printing. The controller 31 that executes the printing program, the printing unit 35, and the processing buffer 33 correspond to a “processing unit”. In the present embodiment, the server 2 renders a print target, generates print data, and transmits the print data to the printer 3. In the present embodiment, the pre-printing process refers to a resolution conversion process, a color conversion process, a halftone process, a rearrangement process, and the like performed on the print data received from the server 2. The processing buffer 33 stores pre-processing, processing steps, and post-processing data when the above-described pre-print processing is performed on the print data extracted and read out from various data stored in the reception buffer 32. It is a memory to do. The buffer memories respectively provided for data transfer of the above-described processes included in the pre-printing process are collectively referred to as a processing buffer 33. In addition, the printing program has a function of interrupting the printing pre-processing and the printing operation by the printing unit 35 when an error occurs in the printer 3 before completing all the printing pre-processing for the print data included in one print job. Have. Further, the communication program has a function of notifying the XMPP server 24 of error information using an XMPP connection when an error occurs in the printer 3. Therefore, the controller 31 and the communication unit 34 that execute the communication program and the printing program correspond to a “notification unit”.

1-2. Printing Sequence In the printing system shown in FIG. 1, when an e-mail addressed to an e-mail address associated with the printer 3 is transmitted from the communication terminal 1 together with the attached file, the attached file is immediately printed in the printer 3. It is hoped that In addition, it is not desirable from the viewpoint of the load on the server 2 and the network traffic that the printer 3 polls the server 2 using a message based on HTTP in order to immediately obtain a print request. Therefore, the printer 3 receives from the server 2 a print job presence notification based on XMPP. XMPP is a so-called push-type protocol that can send a message in both directions, so that polling of the server 2 by the printer 3 is not necessary. If no communication error or other error has occurred when the printer 3 is turned on, the server 2 and the printer 3 are in a state where the XMPP connection is always established.

  FIG. 2 is a sequence chart of a print sequence according to the present embodiment. More specifically, an error occurs in the printer 3 before the pre-printing process in the printer 3 for print data included in one print job is completed. It is a sequence chart in the case. In the sequence chart of FIG. 2, in order to clarify the main part of the invention, details of the HTTP connection establishment / disconnection sequence, and ACK and FIN responding to each communication are omitted.

  First, when the SMTP server 22 receives an email transmitted from the communication terminal 1 to the email address associated with the printer 3 (S100), the application server 21 prints an attached file or the like based on the email. To generate print data. The application server 21 generates a reply e-mail including the job ID of the print job corresponding to the print data and the URL of the management page, and the SMTP server 22 transmits the reply e-mail to the communication terminal 1. (S105). Using the XMPP, the XMPP server 24 transmits a print job presence notification to the printer 3 (S110). Upon receiving the print job presence notification transmitted from the XMPP server 24 through the XMPP connection, the controller 31 of the printer 3 establishes an HTTP connection with the HTTP server 23 (S115), and sends a request for sending content information with the HTTP get request to the HTTP server. (S120). Upon receiving the content information transmission request transmitted from the printer 3, the HTTP server 23 transmits the content information of the print job to the printer 3 (S125). Here, the content information includes information related to the print job such as the job ID of the print job, the download destination URI of the print data, and the document format of the print data. The content information is stored in the reception buffer 32 via the communication unit 34. The controller 31 analyzes the data stored in the reception buffer 32 and acquires content information. After acquiring the content information, the controller 31 discards the content information from the reception buffer 32.

  Subsequently, the controller 31 transmits a print data transmission request to the HTTP server 23 using an HTTP get request (S130). The download destination URI of the print data is included in the content information received by the printer 3 in S125. In S130, a transmission request is made for the entire print data included in the print job notified in S110. The HTTP server 23 receives the print data transmission request from the printer 3, and transmits the print data to the printer 3 by a predetermined size from the top by HTTP connection (S135).

  The print data transmitted from the server 2 is stored in the reception buffer 32 by the communication unit 34 and the controller 31 that executes the communication program. Subsequently, the controller 31 transfers the print data stored in the reception buffer 32 to the processing buffer 33 if there is a vacancy in the processing buffer 33. The print data that has been transferred to the processing buffer 33 is discarded from the reception buffer 32. The controller 31 performs pre-printing processing on the print data transferred to the processing buffer 33. Then, the controller 31 controls the printing unit 35 based on the data subjected to the pre-printing process to execute printing. Data in the processing buffer 33 corresponding to the portion where printing has been completed is discarded.

  The sequence in the case where an error occurs in the printer 3 while the controller 31 is repeating the process of receiving print data, transferring the print data from the reception buffer 32 to the processing buffer 33, pre-printing processing, and printing execution will be hereinafter described. I will explain it. When an error occurs in the printer 3, the printer 3 cannot continue printing, so the controller 31 causes the printing unit 35 to interrupt the printing operation and interrupt the pre-printing process. The controller 31 temporarily leaves the data in the processing buffer 33 without discarding it in preparation for resuming printing. Then, the controller 31 transmits error information including information indicating processing interruption due to an error and information indicating the content of the error to the XMPP server 24 through an XMPP connection that is always established with the XMPP server 24 ( S140).

  FIG. 3 shows a connection established between the printer 3 and the server 2 when the error shown in FIG. 2 occurs. At this time, an XMPP connection and an HTTP connection are established between the server 2 and the printer 3. The XMPP connection is a connection that is always established with the printer 3 in order to transmit information such as a job presence notification from the XMPP server 24 to the printer 3 as described above. The HTTP connection in the figure is a connection that is temporarily established between the printer 3 and the HTTP server 23 in order to transfer content information and print data requested from the printer 3 from the server 2 to the printer 3. When the transmission of the print data is completed, the HTTP connection is canceled. However, if an error occurs, the printing operation and the pre-printing process are stopped, and no space is generated in the processing buffer 33. Is not transferred to the processing buffer 33. Therefore, the reception buffer 32 is filled with data including print data successively received from the server 2, and the HTTP connection is maintained in a state where the subsequent print data cannot be received (zero window state).

  The time when the error is resolved and the printing can be resumed is undecided, and maintaining the HTTP connection until this time places a load on the server 2. Specifically, the memory area reserved for each HTTP connection cannot be released for a long time, and as a result, the time from receipt of an e-mail sent from another communication terminal to execution of printing is delayed. Yes. When the zero window state on the printer 3 side continues for a predetermined period (for example, 5 minutes), the HTTP server 23 (or a network device such as a proxy server existing between the HTTP server 23 and the printer 3) disconnects the HTTP connection. In any case, depending on the length of the predetermined period, a load is applied to the HTTP server 23 and a delay is likely to occur. In order to prevent this delay, when the XMPP server 24 receives error information from the printer 3 through the XMPP connection and the application server 21 acquires information indicating that printing has been interrupted due to an error, the HTTP server 23 receives the HTTP with the printer 3. An instruction to disconnect the connection is issued, and the HTTP server 23 transmits data for disconnecting the HTTP connection with the printer 3 (S145). Specifically, for example, the HTTP server 23 transmits RST (Reset) to the printer 3. As a result, the HTTP connection between the printer 3 and the HTTP server 23 is disconnected. When the HTTP connection is disconnected, the controller 31 of the printer 3 discards the print data stored in the reception buffer 32. When the XMPP server 24 receives error information from the printer 3 in S140, the application server 21 currently requests the printer 3 for the latest status determined based on the received error information (that is, “suspend” in this case). In addition to the history information corresponding to the job ID of the print job being stored, it is stored in the history recording database of the application server 21.

  The HTTP server 25 provides a management page for notifying the user of the printing status based on the email transmitted from the communication terminal 1 to the email address assigned to the printer 3 by the user of the communication terminal 1. The user can browse the management page corresponding to the printer 3 using a WEB browser. The URL of the management page is described in the e-mail returned from the SMTP server 22 to the communication terminal 1 in S105. When the user of the communication terminal 1 performs an operation for browsing a management page using a WEB browser, the communication terminal 1 transmits a transmission request for display data of the management page for browsing error information to the HTTP server 25. (S150), the HTTP server 25 refers to the history information for each print job requested to the printer 3 stored in the history record database of the application server 21, and the latest status for each print job (for suspended print jobs). Display data indicating that the error is included) is generated, and the display data is transmitted to the communication terminal 1 (S155). The print job displayed at this time preferably includes a print job that has already been deleted from the server 2 due to the completion of printing. The communication terminal 1 displays a management page on the WEB browser based on the display data received from the HTTP server 25. The user can recognize the status of the print job using the WEB browser of the communication terminal 1.

  FIG. 4 shows an example of a management page that displays a list of print jobs requested by the printer 3 and their statuses. In this page, the status is displayed for each print job based on error information notified from the printer 3 when an error occurs, information notified from the printer 3 when printing is completed, and the like. For a print job whose printing has been interrupted due to an error, the fact that it has been interrupted based on the error information and the reason for interruption (contents of the error) are displayed based on the error information. In the example of FIG. 4, the reason for interruption is displayed in the remarks column. As the status type, in addition to “interrupt”, for example, “before printing” indicating that the state is from S110 to S130, S135 to S145, or S170 to S175 described later is indicated. There may be “printing”, “printing completed” indicating that printing is completed, and the like. By providing a configuration for acquiring error information from the printer 3 and notifying the user as described above, the user can check the status of the print job executed by the printer 3 using the communication terminal 1 even when the user is away from home. In addition, on such a page that displays a list of statuses for each job, various print job attribute information may be displayed so that the user can easily distinguish print jobs for which the status is to be checked. . For example, the reception date and time of the email, the identification information of the sender of the email, the identification information to be printed (for example, the file name of the attached file of the email), and the like may be displayed.

  After that, when the error is resolved in the printer 3, the controller 31 of the printer 3 establishes an HTTP connection with the HTTP server 23 again (S160), transmits a print data transmission request again (S165), and the HTTP server. 23 transmits print data to the printer 3 in response to the transmission request, and the application server 21 also displays a status indicating that the printing of the printer 3 has been resumed in response to the transmission request and the job of the currently requested print job. In addition to the history information associated with the ID, it is stored in the history record database in the application server 21 (S170). At this time, when the printing is resumed from the continuation at the time of interruption, the controller 31 may make a transmission request by designating a range of the remaining part excluding the print data subjected to the pre-printing process. The amount of print data to be subjected to pre-printing processing can be obtained by counting the cumulative amount of data transferred during transfer from the reception buffer 32 to the processing buffer 33. A range-specified transmission request can be realized by using an HTTP range header. When a transmission request with a specified range is received from the printer 3, the HTTP server 23 transmits print data in the specified range to the printer 3. Of course, when printing is restarted from the first page, a transmission request for the entire print data included in the print job may be made as in S130.

  The controller 31 and the printing unit 35 of the printer 3 execute printing based on the received print data. When printing corresponding to one print job is completed, the printer 3 notifies the print job status (printing end) to the HTTP server 23 via the HTTP connection (S175), and if there is no other print job for the printer 3, the HTTP server 23 disconnects the HTTP connection with the printer 3 (S180), and ends the printing sequence.

2. Other Embodiments The technical scope of the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made without departing from the scope of the present invention. For example, in the above embodiment, error information is transmitted using the XMPP connection that is always connected between the server 2 and the printer 3, but an HTTP connection that is different from the HTTP connection used to transmit print data is used. The error information may be transmitted to the server 2 by using it. FIG. 5 is a diagram for explaining a connection for transmitting error information in this case. The XMPP connection shown in FIG. 5 is a connection that is always connected in order to transmit a print job presence notification similar to the above embodiment. The first HTTP connection is a connection for transmitting print data, and is a connection that continues in a state where the remaining print data cannot be transmitted due to an error in the printer 3. The second HTTP connection is an HTTP connection newly established between the printer 3 and the HTTP server 23 in order to transmit error information from the printer 3 to the server 2 after an error occurs in the printer 3. When an error occurs in the printer 3 during the transmission of print data, the printer 3 transmits error information to the HTTP server 23 through the newly established second HTTP connection. The second HTTP connection is disconnected after the error information is transmitted and the server 2 receives the error information. When the server 2 receives the error information through the second HTTP connection, the server 2 disconnects the first HTTP connection as in S145 of the above embodiment.

The status and error stored as history information by the application server 21 are not limited to those notified from the printer 3 using an HTTP connection different from the HTTP connection used for the XMPP connection or the transmission of print data. For example, an error indicating that the establishment of an HTTP connection used for transmission of print data has failed and a status indicating the status may be stored as history information. Further, for example, an error such as a print cancellation notified from the printer 3 through an HTTP connection used for transmission of print data, and a status indicating the status may be stored as history information. Further, for example, an error such as print cancellation notified from the user of the communication terminal 1 without going through the printer 3, a status indicating the state, and the like may be stored as history information.
Further, the owner of the printer 3 may be able to browse the management page from his / her communication terminal using a WEB browser. In this case, the URL of the management page is acquired in advance at the communication terminal of the owner of the printer 3 prior to the printing sequence.

In the above-described embodiment, an example in which the data processing apparatus is applied to a printer has been described. However, the present invention is applicable to various apparatuses that request processing data from a server and perform some processing using the processing data acquired from the server. Is applicable.
Further, in the above embodiment, the information notification based on the error information by the “notification unit” is realized as a WEB page and viewed from the communication terminal 1, but for example, the server 2 to the communication terminal 1. The user may be notified by sending an e-mail notifying the occurrence of the error and the content of the error based on the error information.

  In the above embodiment, the content information transmission request to reception and the print data transmission request to reception are performed in a series of HTTP sessions, but the content information transmission request to reception (see FIG. 2). The HTTP session may be disconnected after S120 to S125), and a new HTTP session may be established before the print data transmission request (S130 in FIG. 2) to perform the print data transmission request to reception.

  1: Communication terminal, 2: Server, 3: Printer, 4: Internet, 21: Application server, 22: SMTP server, 23: HTTP server, 24: XMPP server, 25: HTTP server, 31: Controller, 32: Receive buffer 33: processing buffer, 34: communication unit, 35: printing unit

Claims (5)

A request processing unit that transmits the processing data to the data processing device in response to a transmission request of the processing data from the data processing device via an HTTP connection;
An error occurs before the data processing apparatus completes processing using the processing data, and error information including information indicating processing interruption due to the error and information indicating the content of the error is different from the HTTP connection. A disconnection processing unit for disconnecting the HTTP connection in response to being notified from the data processing device in connection of
A storage unit for storing the error information in association with the data processing device and the process;
Based on the stored error information, a notification unit for notifying a user that the processing in the data processing device is interrupted by the error and the content of the error;
Server with An e-mail receiving unit for receiving an e-mail addressed to an e-mail address assigned to the specific printing apparatus as the data processing apparatus;
A print data generation unit that generates print data as the processing data based on the received e-mail;
A print job notification unit for notifying the printing apparatus of the presence of a print job related to the print data through an XMPP connection as a connection different from the HTTP connection;
With
The storage unit stores the error information in association with the printing apparatus and the print job;
The notification unit notifies the user that the print job in the printing apparatus has been interrupted due to the error and the content of the error based on the stored error information.
The server according to claim 1. A request unit for requesting transmission of processing data to the server through an HTTP connection;
A receiving unit for receiving the processing data transmitted from the server via the HTTP connection in response to the transmission request;
A processing unit that sequentially acquires the received processing data and performs processing using the processing data;
If an error occurs before completing the processing using the processing data, error information including information indicating processing interruption due to the error and information indicating the content of the error is connected to the connection different from the HTTP connection. A notification unit for notifying the server at
A data processing apparatus comprising: A request processing step of transmitting the processing data to the data processing device in response to a transmission request of the processing data from the data processing device over an HTTP connection;
An error occurs before the data processing apparatus completes processing using the processing data, and error information including information indicating processing interruption due to the error and information indicating the content of the error is different from the HTTP connection. A disconnection process step of disconnecting the HTTP connection in response to being notified from the data processing device in connection of
A storage step of storing the error information in association with the data processing device and the processing;
Based on the stored error information, a notification step of notifying the user that the process in the data processing device has been interrupted by the error and the content of the error;
Server data processing method including. A request process for requesting transmission of processing data to the server via HTTP connection;
A receiving step of receiving the processing data transmitted from the server via the HTTP connection in response to the transmission request;
A processing step of sequentially obtaining the received processing data and performing processing using the processing data;
If an error occurs before completing the processing using the processing data, error information including information indicating processing interruption due to the error and information indicating the content of the error is connected to the connection different from the HTTP connection. A notification step of notifying the server at
A data processing method for a data processing apparatus including:

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