JP2006309419A - Home server and communication program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a home server and a communication program capable of notifying a control terminal connected to a wide area network of the results of instructions that the control terminal has sent to a network connection device, while suppressing deterioration of throughput in the wide area network and a rise in communication fees. <P>SOLUTION: The home server 30 includes an intellectual communication receiving part 31 for receiving action messages from an intellectual control terminal 10 via the wide area network; a permission list management part 37 for storing device identification information included in the action messages; and an intellectual communication sending part 38 for sending notification messages sent by an air conditioner 40A to the wide area network if the notification messages include the device identification information stored. The intellectual communication sending part 38 sends the notification messages to the wide area network only for a predetermined period of time. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention provides a notification document for transmitting an operation instruction document describing an operation instruction content for a network connection device connected to a home network to the network connection device and notifying a result of the operation according to the instruction content. The present invention relates to a home server and a communication program received from the network connection device.

  In recent years, with the advancement of information technology (IT), devices such as home appliances and home appliances can be connected to a communication network laid in a house or the like, a so-called “home network” (hereinafter referred to as such). Device is called network connection device).

  Such a home network is generally connected to the Internet or a telephone network including a mobile phone network (hereinafter referred to as “wide area network”). For this reason, the user uses a control terminal such as a mobile phone terminal to check the status of the network connection device connected to the home network from outside the home, or to control the network connection device from outside the home. (For example, Patent Document 1).

In addition, in the above-described home network, in order to avoid implementation of a complicated communication protocol in the network connection device, a “home server” that performs communication with the network connection device connected to the home network is provided. A form in which communication between connected devices and communication between a control terminal such as a mobile phone terminal and a network connected device are performed via a home server is realized.
JP 2004-348319 A (page 9-10, FIG. 7)

  However, the home network in a form in which communication is performed via the home server described above has the following problems. Specifically, in the home network, all “Action statements” (operation instruction documents) in which instruction contents for network connection devices are described are transmitted to the home server.

  The home server that has received the Action statement transmits the Action statement to the network connection device that is the target of the operation instruction described in the Action statement. The network-connected device that has received the Action statement transmitted by the home server performs a predetermined operation according to the content of the Action statement, and transmits a “Notify statement” (notification document) that notifies the result to the home server. .

  The home server that has received the Notify statement broadcasts the Notify statement to all network connected devices “connected to the home network”.

  That is, the home server cannot return the Notify statement to a control terminal that has requested an instruction from the outside of the home via a wide area network or the like to the network connection device. For this reason, there is a problem that the user of the control terminal cannot confirm the result of the instruction content for the network connection device.

  On the other hand, in order for the user of the control terminal to confirm the result of the instruction to the network connection device, the Notify statement is always transmitted from the home server to the wide area network connected to the home network. Good.

  However, in this case, the amount of traffic to the wide area network increases, causing problems such as a decrease in throughput and an increase in communication charges in the wide area network.

  Therefore, the present invention has been made in view of such a situation, and for the control terminal connected to the wide area network while suppressing a decrease in throughput and an increase in communication charges in the wide area network. It is an object of the present invention to provide a home server and a communication program capable of notifying the result of instruction contents for a network connection device transmitted by a control terminal.

  In order to solve the problems described above, the present invention has the following features. First, the first feature of the present invention is that an operation instruction document (Action sentence # 2) in which operation instruction contents for a network connection device (for example, an air conditioner 40A) connected to a home network (home network 1) are described. Is a home server (home server 30) that receives a notification document (Notify statement # 1) for notifying the result of the operation in accordance with the content of the instruction from the network connected device. The instruction document includes device identification information for uniquely identifying the network connection device, and the control terminal (external control terminal 10) is connected via the wide area network (wide area network 2) connected to the home network. ) Receiving the operation instruction document from the operation instruction document receiving unit (external communication receiving unit 31), and receiving the operation instruction document receiving unit. Information storage unit (permission list management unit 37) that stores the device identification information included in the operation instruction document received by the network, and the identification information storage unit in the notification document transmitted by the network connection device A notification document transmission unit (permission list management unit 37 and an out-of-home communication transmission unit 38) that transmits the notification document to the wide area network. The summary of the notification document transmission unit is to transmit the notification document to the wide area network only for a predetermined time (for example, 120 seconds) after the operation instruction document reception unit receives the operation instruction document.

  According to such a feature, when the operation instruction document is received from the control terminal via the wide area network, the home server notifies the result of the operation of the network connection device according to the operation instruction document only for a predetermined time. Send a document to a wide area network.

  Therefore, it is possible to reliably transmit the notification document to the control terminal connected to the wide area network while suppressing the traffic amount to the wide area network. That is, according to such a feature, the network connection device transmitted by the control terminal to the control terminal connected to the wide area network is controlled while suppressing a decrease in throughput and an increase in communication charge in the wide area network. The result of the instruction content can be notified.

  A second feature of the present invention relates to the first feature of the present invention, wherein the operation instruction document includes control terminal identification information for uniquely identifying the control terminal, and the identification information storage unit includes: The control terminal identification information included in the operation instruction document is further stored, and the notification document transmission unit includes the device identification information and the control terminal identification information in the notification document transmitted by the network connection device. If it is included, the gist is to transmit the notification document to the control terminal via the wide area network.

  According to a third aspect of the present invention, an operation instruction document in which operation instruction content for a network connection device connected to a home network is described is transmitted to the network connection device, and an operation result according to the instruction content is transmitted. A communication program for receiving a notification document to be notified from the network connection device, wherein the operation instruction document includes device identification information for uniquely identifying the network connection device, and the computer includes the home network and the home network. An operation instruction document reception procedure for receiving the operation instruction document from the control terminal via the connected wide area network, and the device identification information included in the operation instruction document received in the operation instruction document reception procedure ID information storing procedure for storing the notification document and the notification document transmitted by the network connection device When the device identification information stored in the identification information storage procedure is included, the notification document transmission procedure for transmitting the notification document to the wide area network is executed. In the notification document transmission procedure, the operation The gist is to transmit the notification document to the wide area network only for a predetermined time after the operation instruction document is received in the instruction document reception procedure.

  A fourth feature of the present invention relates to the third feature of the present invention, wherein the operation instruction document includes control terminal identification information for uniquely identifying the control terminal. In the identification information storage procedure, The control terminal identification information included in the operation instruction document is further stored, and in the notification document transmission procedure, the device identification information and the control terminal identification information are included in the notification document transmitted by the network connection device. If it is included, the gist is to transmit the notification document to the control terminal via the wide area network.

  According to the features of the present invention, a home server and a communication program capable of notifying a control terminal connected to a wide area network of a result of an instruction content for a network connection device transmitted by the control terminal are provided. Can do.

  Next, an embodiment of the present invention will be described. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones.

  Accordingly, specific dimensions and the like should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.

(Overall schematic configuration of network system including home server)
FIG. 1 is an overall schematic configuration diagram of a network system including a home server according to the present embodiment.

  As shown in FIG. 1, a home server 30 is connected to a home network 1 laid in a house or the like. The home network 1 is connected to an air conditioner 40A and a front door 40B which are network connection devices installed in the house. Of course, network connection devices other than the air conditioner 40A and the front door 40B may be connected to the home network 1.

  The home server 30 has an action statement (operation instruction) in which instruction contents of the operation to the air conditioner 40A and the entrance door 40B (for example, start of heating operation of the air conditioner 40A and locking of an electronic lock provided in the entrance door 40B) are described. Document) to the network connection device. Further, the home server 30 receives a Notify statement (notification document) for notifying the result of the operation in accordance with the instruction content included in the Action statement from the network connection device.

  In the present embodiment, the home server 30 receives an Action sentence from the outside control terminal 10 (control terminal) via the wide area network 2 connected to the home network 1 and the outside server 20, and receives the received Action sentence. Is unicast transmitted to the network connection device to be controlled connected to the home network 1.

  In addition, the home server 30 receives a Notify statement for notifying the result of the operation according to the Action statement from the network connection device (for example, the air conditioner 40A), and sends the received Notify statement via the wide area network 2 outside the home. Send to server 20. Further, the contents of the Notify statement are transmitted from the remote server 20 to the remote control terminal 10. A specific transmission / reception method of the Action sentence and the Notify sentence will be described later.

  The wide area network 2 is connected to the home network 1 and is a communication network that covers an area outside the house (outside the house) where the home network 1 is laid. The wide area network 2 may include the Internet and a mobile phone network.

(Logical block configuration of network system)
FIG. 2 shows a logical block configuration of a network system including the home server 30 according to this embodiment described above. Specifically, FIG. 2 shows a logical block configuration of the remote control terminal 10, the remote server 20, the home server 30, and the air conditioner 40A.

  Hereinafter, portions related to the present invention will be mainly described. Therefore, it should be noted that each device may include a logical block (a power supply unit or the like) that is essential for realizing the function of the device and that is not illustrated or omitted in the description.

(1) Out-of-home control terminal In this embodiment, the out-of-home control terminal 10 is a mobile phone terminal that can use a communication service via a mobile phone network that forms part of the wide area network 2. The out-of-home control terminal 10 is not limited to a mobile phone terminal, but may be a personal computer or a personal digital assistant (PDA) having a function capable of connecting to the wide area network 2.

  The out-of-home control terminal 10 displays a document (for example, an HTML document) transmitted by the out-of-home server 20 and is a Web used for transmitting operation instructions for network connection devices to the out-of-home server 20. A browser 11 is provided.

  The user of the remote control terminal 10 can use the Web browser 11 to determine the instruction content of the operation for the network connection device or to confirm the result of the operation of the network connection device based on the instruction content.

(2) Out-of-home server The out-of-home server 20 includes a web server 21, an action sentence transmitting unit 22, and a notify sentence receiving unit 23.

  The Web server 21 transmits a document (for example, an HTML document) to the Web browser 11 using a predetermined communication protocol (for example, HTTP) in response to a request transmitted by the Web browser 11 of the out-of-home control terminal 10. .

  The Action sentence transmission unit 22 describes the instruction content via the wide area network 2 (and the home network 1) based on the operation instruction content for the network connection device transmitted by the Web browser 11 of the remote control terminal 10. The action statement (action statement # 1) is transmitted to the out-of-home communication receiver 31 of the home server 30.

  The Notify sentence receiving unit 23 receives the Notify sentence (Notify sentence # 2) transmitted by the out-of-home communication transmitting unit 38 of the home server 30. The Notify sentence (Notify sentence # 2) received by the Notify sentence receiving unit 23 is output to the Web server 21 and transmitted to the Web browser 11 as a document (for example, an HTML document).

(3) Home server The home server 30 includes an out-of-home communication receiving unit 31, an out-of-home communication determining unit 32, a timer managing unit 33, an in-home communication transmitting unit 34, an in-home communication receiving unit 35, an in-home communication determining unit 36, and a permission list management. Unit 37 and out-of-home communication transmitting unit 38.

  The out-of-home communication receiving unit 31 receives a document transmitted from the outside of the house (outside the home) where the home network 1 is laid to the home server 30 via the wide area network 2. In particular, in this embodiment, the out-of-home communication receiving unit 31 receives an action sentence (action sentence # 1) from the out-of-home control terminal 10 via the wide area network 2 and the out-of-home server 20. In the present embodiment, the out-of-home communication receiving unit 31 constitutes an operation instruction document receiving unit.

  The out-of-home communication determination unit 32 determines whether the type of the document received by the out-of-home communication reception unit 31 is an Action statement (Action statement # 1).

  When the out-of-home communication receiving unit 31 receives the action statement (action statement # 1), the out-of-home communication determination unit 32 outputs the action statement (action statement # 1) to the in-home communication transmission unit 34 and also the action The network connection device identification information (device identification information) included in the statement (Action statement # 1) is output to the permission list management unit 37.

  The timer management unit 33 sets, for each device identification information included in the permission list managed by the permission list management unit 37, a time for transmitting the Notify statement transmitted by the network connection device toward the wide area network 2. to manage.

  Specifically, the timer management unit 33 manages the time that has elapsed since the device identification information was registered (entry) in the permission list. In the present embodiment, the timer management unit 33 manages whether or not 120 seconds (predetermined time) has elapsed from the time of registration in the permission list, and when 120 seconds have elapsed from the time of registration in the permission list, the permission list Delete the device identification information (entry).

  The in-home communication transmission unit 34 transmits a document (for example, an Action sentence) or the like to the network connection devices (the air conditioner 40A and the front door 40B) connected to the home network 1. Specifically, the in-home communication transmission unit 34 responds to the communication protocol used in the home network 1 based on the contents of the Action statement # 1 (see FIG. 3A) output by the out-of-home communication determination unit 32. Action sentence # 2 (see FIG. 3B) is generated and transmitted.

  The in-home communication receiving unit 35 receives a document transmitted by a network connection device (air conditioner 40A or front door 40B). In particular, in this embodiment, the in-home communication receiving unit 35 receives Notify sentence # 1 (see FIG. 3C) transmitted by a network connection device (for example, an air conditioner 40A).

  The home communication determination unit 36 determines whether the type of the document received by the home communication reception unit 35 is a Notify sentence. When the in-home communication receiving unit 35 receives the Notify statement (Notify statement # 1), the in-home communication determination unit 36 outputs the Notify statement (Notify statement # 1) to the permission list management unit 37.

  The permission list management unit 37 manages a permission list including identification information (device identification information) for uniquely identifying network connection devices (the air conditioner 40A and the entrance door 40B).

  Specifically, the permission list management unit 37 uses the device identification information (for example, identification information of the air conditioner 40A) included in the Action sentence (Action sentence # 1) received by the outside communication receiving unit 31 in the permission list. Register and store the permission list. In the present embodiment, the permission list management unit 37 constitutes an identification information storage unit.

  Further, the permission list management unit 37 determines whether or not to output the Notify sentence (Notify sentence # 1) output by the in-home communication determination unit 36 to the outside communication transmission unit 38 based on the stored permission list. judge.

  Specifically, when the device identification information of the network connection device included in the Notify statement (Notify statement # 1) output by the in-home communication determination unit 36 is also included in the stored permission list The Notify sentence (Notify sentence # 1) is output to the out-of-home communication transmitter 38.

  The out-of-home communication transmitting unit 38 transmits a document (for example, Notify sentence) to the out-of-home server 20 connected to the wide area network 2. In particular, in the present embodiment, the out-of-home communication transmitter 38 sends a Notify statement # 2 (in accordance with the communication protocol used in the wide area network 2 based on the contents of the Notify statement # 1 output by the permission list management unit 37. 3d) is generated and transmitted.

  In the present embodiment, the permission list management unit 37 and the out-of-home communication transmission unit 38 include the device identification information included in the Notify statement transmitted by the network connection device (for example, the air conditioner 40A) in the permission list. The notification document transmission unit configured to transmit the Notify statement to the wide area network 2 is configured.

  Specifically, when the device identification information corresponding to the permission list is included, the permission list management unit 37 and the out-of-home communication transmission unit 38 transmit the Notify sentence # 2 toward the wide area network 2.

  That is, the permission list management unit 37 and the out-of-home communication transmitting unit 38 transmit the Notify statement to the wide area network 2 only for 120 seconds (predetermined time) after the out-of-home communication receiving unit 31 receives the operation instruction document. To do.

(4) Network connection device In this embodiment, the air conditioner 40A constituting the network connection device includes an action sentence reception unit 41, an operation unit 42, and a notify statement transmission unit 43. The entrance door 40B has the same logical block configuration as the air conditioner 40A.

  The Action sentence receiving unit 41 receives the Action sentence (Action sentence # 2) transmitted by the home communication transmitting unit 34 of the home server 30. The Action statement (Action statement # 2) received by the Action statement receiving unit 41 is output to the operation unit 42.

  The operation unit 42 executes a predetermined operation based on the instruction content of the operation included in the Action statement (Action statement # 2) output by the Action statement receiving unit 41. For example, the operation unit 42 starts the heating operation based on the “heating ON” instruction content (see FIG. 3C) included in the Action statement (Action statement # 2). Moreover, the operation | movement part 42 notifies Notify sentence transmission part 43 that the heating operation was started.

  The Notify sentence transmission unit 43 transmits a Notify sentence (Notify sentence # 1) to the home server 30 via the home network 1 based on the notification from the operation unit 42. For example, when the operation part 42 is notified that the heating operation has started, the Notify sentence transmission unit 43 generates a Notify sentence (Notify sentence # 1) notifying that the heating operation has started, and the generated Notify sentence Is transmitted to the home communication receiver 35 of the home server 30.

(Home server operation)
Next, the operation of the home server 30 described above will be described. Specifically, (1) operation when receiving an Action sentence (Action sentence # 1) from the out-of-home control terminal 10, (2) Notify sentence (Notify sentence # from the network connection device (air conditioner 40A or front door 40B)) The operation when 1) is received and (3) the operation of deleting the device identification information from the permission list will be described.

(1) Operation when the Action Statement is Received As shown in FIG. 4, in step S101, the home server 30 has received a document addressed to the home server 30 from outside the home, that is, via the wide area network 2. Determine whether. Specifically, the home server 30 determines whether a packet whose destination address is an address assigned to the home server 30 has been received.

  When a document addressed to the home server 30 is received (YES in step S101), in step S102, the home server 30 determines whether or not the received document is an action statement. Specifically, the home server 30 determines whether or not an Action statement (Action statement # 1) as shown in FIG.

  As shown in FIG. 3A, the Action statement # 1 has the address of the air conditioner 40A that is the target of the instruction content as the destination address (<destination>). Further, the Action statement # 1 has, as a transmission source address (<transmission source>), the address of the remote server 20 and the address of the remote control terminal 10 that is the request source of the operation instruction content for the network connection device. ing. Further, the action statement # 1 includes data indicating the instruction content (heating ON).

  In the present embodiment, the entire Action statement # 1 is generated as an IP packet, and the data portion is described according to XML. Note that the Action statement # 1 (and the Notify statement # 2 described later) is not necessarily an IP packet. Further, the data portion does not necessarily have to be described according to XML.

  Next, as shown in FIG. 4, when the Action statement is received (YES in step S102), in step S103, the home server 30 registers the device identification information in the permission list managed by the permission list management unit 37. To do.

  Specifically, the home server 30 registers the identification information (device identification information) of the air conditioner 40A included in the received Action statement in the permission list.

  In step S <b> 104, the home server 30 activates the timer together with the registration of the device identification information in the permission list. Specifically, the home server 30 measures the elapsed time from the time when the device identification information is registered in the permission list.

  In step S105, the home server 30 generates an Action statement # 2 corresponding to the communication protocol used in the home network 1, as shown in FIG. 3B, based on the received Action statement (Action statement # 1). The generated Action sentence # 2 is transmitted to the air conditioner 40A to be operated.

  The Action statement # 2 is obtained by adding the address of the home server 30 to the transmission source address of the Action statement # 1.

(2) Operation when Notify Statement is Received As shown in FIG. 5, in step S201, the home server 30 receives a document transmitted from the home, that is, by the network connection device (the air conditioner 40A or the front door 40B). Determine whether or not.

  When the document transmitted by the network connection device is received (YES in step S201), in step S202, the home server 30 determines whether or not the received document is a Notify statement. Specifically, the home server 30 determines whether a Notify statement (Notify statement # 1) as shown in FIG.

  As shown in FIG. 3C, the Notify statement # 1 has a source address (<source>). The Notify statement # 1 includes data indicating an instruction result (heating ON) that is a result of an operation based on the instruction content included in the Action statement # 2 (see FIG. 3B).

Next, as shown in FIG. 5, when the Notify sentence is received (YES in step S202), in step S203, the home server 30 determines that the device identification information (air conditioner 40A) included in the Notify sentence is permitted. It is determined whether it is registered in the list.

  When the device identification information (air conditioner 40A) is registered in the permission list (YES in step S203), in step S204, the home server 30 determines whether the received Notify sentence (Notify sentence # 1) is based on the contents of FIG. As shown in d), the Notify statement # 2 corresponding to the communication protocol used in the wide area network 2 or the out-of-home server 20 is generated, and the generated Notify sentence # 2 is converted into the wide area network 2 (specifically, the out-of-home server). 20).

  As shown in FIG. 3D, Notify sentence # 2 is obtained by adding the address of home server 30 to the source address of Notify sentence # 1.

(3) Operation for Deleting Device Identification Information from Permitted List As shown in FIG. 6, in step S301, home server 30 determines whether 120 seconds have elapsed since the timer was activated in step S104 described above. To do.

  When 120 seconds have elapsed since the timer was activated (YES in step S301), in step S302, the home server 30 deletes the device identification information (air conditioner 40A) registered in the permission list.

(Action / Effect)
According to the home server 30 according to the present embodiment described above, when receiving an Action statement from the outside-home control terminal 10 via the wide area network 2, the home server 30 is concerned only for 120 seconds after receiving the Action statement. A Notify statement for notifying the result of the operation of the network connection device in accordance with the Action statement is transmitted toward the wide area network 2.

  For this reason, the Notify statement can be reliably transmitted to the remote control terminal 10 connected to the wide area network 2 while suppressing the amount of traffic to the wide area network 2. That is, according to the home server 30, the out-of-home control terminal 10 is connected to the out-of-home control terminal 10 connected to the wide-area network 2 while suppressing a decrease in throughput and an increase in communication charges in the wide-area network 2. The result of the instruction content for the transmitted network connection device can be notified.

(Other embodiments)
As described above, the content of the present invention has been disclosed through one embodiment of the present invention. However, it should not be understood that the description and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments will be apparent to those skilled in the art.

  For example, the above-described embodiment of the present invention may be modified as follows. Specifically, including the identification information (control terminal identification information) for uniquely identifying the out-of-home control terminal 10 (control terminal) in the Action statement (operation instruction document), the permission list management unit 37 of the home server 30 Control terminal identification information is memorize | stored with the apparatus identification information of the network connection apparatus used as the object of instruction | indication.

  In this case, the permission list management unit 37 and the outside communication transmission unit 38 (notification document transmission unit) store the device identification information (the air conditioner 40A) and the control terminal identification information (the outside control terminal 10) in the network connection device (for example, If the Notify statement (Notify statement # 1) transmitted by the air conditioner 40A) is included in the remote control, the Notify statement (Notify statement # 2) is not addressed to the outside server 20 but via the wide area network 2. Transmit directly to the terminal 10.

  According to such a modification, the result of the instruction to the network connection device can be transmitted to the remote control terminal 10 connected to the wide area network 2 without using the remote server 20.

  The functions of the home server 30 according to the embodiment of the present invention described above can also be provided as a program that can be executed on a computer.

  As described above, the present invention naturally includes various embodiments that are not described herein. Therefore, the technical scope of the present invention is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.

1 is an overall schematic configuration diagram of a network system including a home server according to an embodiment of the present invention. 1 is a logical block configuration diagram of a network system including a home server according to an embodiment of the present invention. It is a figure which shows an example of the operation instruction | indication document and notification document which are transmitted / received in the network system which concerns on embodiment of this invention. It is an operation | movement flowchart of the home server which concerns on embodiment of this invention. It is an operation | movement flowchart of the home server which concerns on embodiment of this invention. It is an operation | movement flowchart of the home server which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Home network, 2 ... Wide area network, 10 ... Remote control terminal, 11 ... Web browser, 20 ... Outside server, 21 ... Web server, 22 ... Action sentence transmission part, 23 ... Notify sentence reception part, 30 ... Home Server, 31 ... external communication receiving unit, 32 ... external communication determining unit, 33 ... timer managing unit, 34 ... internal communication transmitting unit, 35 ... internal communication receiving unit, 36 ... internal communication determining unit, 37 ... permission list management , 38 ... external communication transmitter, 40A ... air conditioner, 40B ... entrance door, 41 ... action sentence receiver, 42 ... operation part, 43 ... notify sentence sender

Claims (4)

An operation instruction document in which operation instruction content for a network connection device connected to a home network is described is transmitted to the network connection device, and a notification document for notifying a result of the operation according to the instruction content is transmitted to the network connection device. A home server that receives from
The operation instruction document includes device identification information for uniquely identifying the network connection device,
An operation instruction document receiving unit for receiving the operation instruction document from a control terminal via a wide area network connected to the home network;
An identification information storage unit that stores the device identification information included in the operation instruction document received by the operation instruction document reception unit;
A notification document transmission unit configured to transmit the notification document to the wide area network when the device identification information stored in the identification information storage unit is included in the notification document transmitted by the network connection device; With
The notification document transmission unit is a home server that transmits the notification document to the wide area network only for a predetermined time after the operation instruction document reception unit receives the operation instruction document. The operation instruction document includes control terminal identification information for uniquely identifying the control terminal,
The identification information storage unit further stores the control terminal identification information,
When the notification document transmitted by the network connection device includes the device identification information and the control terminal identification information, the notification document transmission unit sends the notification document to the control terminal via the wide area network. The home server according to claim 1, which is transmitted to. An operation instruction document in which operation instruction content for a network connection device connected to a home network is described is transmitted to the network connection device, and a notification document for notifying a result of the operation according to the instruction content is transmitted to the network connection device. A communication program received from
The operation instruction document includes device identification information for uniquely identifying the network connection device,
On the computer,
An operation instruction document receiving procedure for receiving the operation instruction document from a control terminal via a wide area network connected to the home network;
An identification information storage procedure for storing the device identification information included in the operation instruction document received in the operation instruction document reception procedure;
A notification document transmission procedure for transmitting the notification document to the wide area network when the device identification information stored in the identification information storage procedure is included in the notification document transmitted by the network connection device; Let it run
In the notification document transmission procedure, a communication program for transmitting the notification document to the wide area network only for a predetermined time after the operation instruction document is received in the operation instruction document reception procedure. The operation instruction document includes control terminal identification information for uniquely identifying the control terminal,
In the identification information storage procedure, the control terminal identification information included in the operation instruction document is further stored,
In the notification document transmission procedure, when the device identification information and the control terminal identification information are included in the notification document transmitted by the network connection device, the notification document is transmitted to the control terminal via the wide area network. The communication program according to claim 3, which is transmitted to the communication program.

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