JP2005198095A - Ip communication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an IP communication system which allows a group to be set by easy operation. <P>SOLUTION: The IP communication system having an IP communication terminal 1 is provided with an external interface part 70 for communicating with a mobile phone 20, an IP transmission/reception part 40 capable of IP communication, an IP address storage part 50, and a group IP address storage part 30. An IP address of the IP communication terminal 1 is stored in the IP address storage part 50, and the external interface part 70 transmits the IP address of the IP communication terminal 1 to the mobile phone 20 and acquires an IP address of the other party 21 of communication from a mail stored in the mobile phone 20, and the group IP address storage part 30 sets the IP address of the other party 21 of communication as an IP address of a group of the IP communication terminal 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an IP communication system, and more particularly to an IP communication system that performs vehicle-to-vehicle communication based on the Internet Protocol (IP).

  Due to the spread of the Internet, in-vehicle information terminals that connect to the Internet and acquire various information related to vehicle operation are attracting attention.

For example, a data providing device that provides various data such as music data, video data, and map data is mounted on one vehicle, and a data collecting device that collects the various data is mounted on the other vehicle, such as a wireless LAN. There is known an in-vehicle information terminal that transmits and receives the various data encrypted via a vehicle between vehicles without using a base station on a road (see, for example, Patent Document 1).
JP 2003-87231 A (paragraphs [0008] to [0009], etc.)

  In the field of such in-vehicle information terminals, communication between vehicles based on the Internet protocol (IP) will be performed in the future. In this IP-based communication, a communication partner is specified using an IP address. In group running, it is necessary to set the IP address of the communication partner as a group in order to communicate between vehicles. In an in-vehicle terminal for performing conventional IP-based communication, it is necessary to input an IP address of a communication partner via an external device such as a personal computer (PC) in order to perform group setting. The input operation was also complicated.

  A first feature of the present invention is an IP having an IP communication terminal including an external interface unit that communicates with a mobile phone, an IP transceiver unit capable of IP communication, an IP address storage unit, and a group IP address storage unit In the communication system, the IP address storage unit stores the IP address of the IP communication terminal, and the external interface unit transmits the IP address of the IP communication terminal to the mobile phone and communicates from mail stored in the mobile phone. The gist is that the IP address of the other party is acquired, and the group IP address storage unit sets the IP address of the other party as the IP address of the group of IP communication terminals.

  A second feature of the present invention is an IP communication system having a mobile phone capable of sending and receiving mail and an IP communication terminal connectable to the mobile phone, wherein the IP communication terminal communicates with the mobile phone. An interface unit, an IP transmission / reception unit capable of IP communication, an IP address storage unit, and a group IP address storage unit are provided. The IP address storage unit stores the IP address of the IP communication terminal, and the mobile phone performs group running communication. A mail with the IP address of the IP communication terminal is transmitted to the other party, and a mail with the IP address of the communication partner is received from the group running communication partner. The group IP address storage unit stores the IP address of the communication partner. The gist is to set as an IP address of a group of IP communication terminals.

  ADVANTAGE OF THE INVENTION According to this invention, the IP communication system which can set the group of an IP address by simple operation can be provided.

  Embodiments of the present invention will be described below with reference to the drawings. In the description of the drawings, the same or similar parts are denoted by the same or similar reference numerals.

(First embodiment)
As shown in FIG. 1, the Internet protocol communication system (IP communication system) according to the first embodiment includes a mobile phone 20 capable of sending and receiving mail and an IP communication terminal 1 connectable to the mobile phone 20. Have. In the first embodiment, an in-vehicle IP communication system having an IP communication terminal (hereinafter referred to as “in-vehicle IP communication terminal”) 1 mounted on a vehicle will be described as an example of the IP communication system. In addition, this in-vehicle IP communication system includes a receiving-side mobile phone 20 that can be connected to the in-vehicle IP communication terminal 1 and a transmitting-side mobile phone 21 that transmits mail to the receiving-side mobile phone 20 as mobile phones that transmit and receive mail. Have

  The in-vehicle IP communication terminal 1 includes an external interface unit 70 that communicates with the receiving-side mobile phone 20, an IP transmission / reception unit 40 that includes an antenna capable of IP communication, an IP address storage unit 50, a group IP address storage unit 30, An in-vehicle information terminal 60, a group IP address storage unit 30, an IP transmission / reception unit 40, an IP address storage unit 50, an in-vehicle information terminal 60 and an arithmetic processing unit (CPU) 10 connected to the external interface unit 70 are provided.

  The IP address storage unit 50 stores the IP address of the in-vehicle IP communication terminal 1, that is, the IP address of the own vehicle. The IP address of the own vehicle is written in the IP address storage unit 50 when the in-vehicle IP communication system is sold. The receiving-side mobile phone 20 receives and stores mail (IP-address-added mail) with an IP address from the sending-side mobile phone 21. The external interface unit 70 acquires the IP address of the communication partner from the mail with the IP address stored in the receiving-side mobile phone 20 and transfers the IP address of the communication partner to the CPU 10. The CPU 10 stores the IP address of the communication partner in the group IP address storage unit 30. Instead of the external interface unit 70, the CPU 10 may extract the IP address from the mail with the IP address. The external interface unit 70 not only acquires the IP communication terminal connected to the transmitting-side mobile phone 21 from the mail stored in the receiving-side mobile phone 20, that is, the IP address of the communication partner, but also the in-vehicle IP communication The IP address of the terminal 1 is transmitted to the receiving side mobile phone 20. The group IP address storage unit 30 sets the IP address of the communication partner as the group IP address of the in-vehicle IP communication terminal 1. In other words, the group IP address storage unit 30 stores the IP address of the in-vehicle IP communication terminal mounted on another vehicle (group vehicle) that performs group traveling. The IP transmitter / receiver 40 communicates with an IP communication terminal mounted on a group vehicle by IP based on an IP address. The in-vehicle information terminal 60 performs inter-vehicle communication via the IP transmission / reception unit 40 or connects to a server to acquire operation information and the like.

  The receiving-side mobile phone 20 and the transmitting-side mobile phone 21 in FIG. 1 have the same configuration, and as shown in FIG. 2, the CPU 100, the transmission / reception unit 110, the display unit 120, the input unit 130, It has an address book 140, a mail management unit 150, and an external interface unit 160. The transmission / reception unit 110 transmits / receives a mail with an IP address to / from another mobile phone via a predetermined antenna. The display unit 120 displays various information related to the mail with an IP address including the IP address. An IP address is registered in the address book 140, and it can be confirmed whether or not the IP address attached to the received mail is registered in the address book 140. The mail management unit 150 manages transmission / reception of mail with an IP address and stores mail. The external interface unit 160 communicates with the external interface unit 70 of the in-vehicle IP communication terminal 1.

  Next, the operation of the in-vehicle IP communication system shown in FIGS. 1 and 2 will be described with reference to FIGS. First, with reference to FIG. 3, an operation when performing group setting will be described.

  (A) First, in step S100, the connection between the in-vehicle IP communication terminal 1 and the receiving-side mobile phone 20 is confirmed. The external interface unit 70 of the in-vehicle IP communication terminal 1 reads the IP address-attached mail from the receiving mobile phone 20 in step S110, and acquires the IP address in step S120. In step S130, the acquired IP address is stored in the group IP address storage unit 30. Thus, when the in-vehicle IP communication terminal 1 and the receiving-side mobile phone 20 are connected, the in-vehicle IP communication terminal 1 acquires the IP address of the communication partner from the mail with the IP address stored in the receiving-side mobile phone 20, Set as the group IP address.

  (B) Finally, in step S140, the user is notified that the group IP address has been set. Specifically, when the in-vehicle IP communication terminal 1 acquires the communication partner's IP address from the mail stored in the receiving-side mobile phone 20, and the communication partner's IP address is set as the group IP address, the setting is normal. Present what has been done.

  If the IP address of the communication partner is not set as the group IP address, the in-vehicle IP communication terminal 1 acquires the IP address of the communication partner from the receiving mobile phone 20 again. That is, if any of the steps S100 to S130 fails, the above procedure is repeated.

  Further, the format of the IP address is determined. For example, since it is composed of 32 bits in IPv4, it can be extracted by searching a predetermined format.

  Further, when the group IP address set in the group IP address storage unit 30 includes an on / off flag indicating whether the group setting of the group IP address is valid or invalid, the group IP address is previously set. Group setting can be performed by turning on the flag of the IP address whose flag is turned off when storing.

  Next, with reference to FIG. 4, the operation when the vehicle on which the in-vehicle IP communication terminal 1 of FIG. 1 is mounted performs group traveling will be described.

  (A) First, in step S200, the CPU 10 of the in-vehicle IP communication terminal 1 reads the IP address of the own vehicle from the IP address storage unit 50. In step S210, the CPU 10 transmits the IP address of the own vehicle to another vehicle (group vehicle) that performs group traveling via the IP transmission / reception unit 40, and receives the IP address of the group vehicle.

  (B) In step S220, the received IP address of the group vehicle and the IP address stored in the group IP address storage unit 30 are compared to determine whether there is a match. If there is a match (Yes in step S220), the group vehicle IP address received in step S230 is set as a group, and the group setting is presented to the user in step S240. On the other hand, if there is no match (No in step S220), group setting is not performed.

  Next, the operation when the in-vehicle IP communication terminal 1 of FIG. 1 cancels the group setting will be described with reference to FIG.

  First, in step S300, the CPU 10 of the in-vehicle IP communication terminal 1 reads the group IP address from the group IP address storage unit 30. In step S310, the setting release button is pressed to delete the read group IP address from the group IP address storage unit 30. Finally, the user is notified that the group IP address has been deleted in step S320.

  If the group IP address set in the group IP address storage unit 30 includes an on / off flag in step S310, the group setting can be canceled by converting the on / off flag from on to off. .

  Also, instead of changing the flag from ON to OFF with the setting release button, the flag of the IP address of the group that has been set for a certain time, for example, 24 hours after the group setting is changed from ON to OFF. You may cancel the group setting.

  The in-vehicle IP communication terminal 1 further includes home registration means for registering the home position and home arrival detection means for detecting arrival at the home, and detecting that the home arrival detection means has arrived at the home, Furthermore, when detecting that the vehicle engine has been stopped, the in-vehicle IP communication terminal 1 may cancel the group setting by converting the on / off flag from on to off.

  As described above, in the first embodiment, a mail with an IP address is transmitted / received by the receiving mobile phone 20, and the group IP address read from the mail with the IP address is stored in the group IP address storage unit of the in-vehicle IP communication terminal 1 Since the group setting is performed with the IP address, the group setting can be performed with a simple operation. You can also cancel group settings with a simple operation. Furthermore, since the group can be set even when the group vehicle is not in the vicinity of the host vehicle, communication can be performed when the group vehicle approaches at the time of waiting. By providing a group setting on / off flag, group settings are made using previously stored IP addresses, group settings are automatically canceled after a certain period of time, or the engine is stopped when returning to home. Then, the group setting can be automatically canceled.

(Modification)
In the modification of the first embodiment, the overall configuration of the IP communication system is the same as that shown in FIG. However, since the configurations of the reception-side mobile phone 20 and the transmission-side mobile phone 21 are different from those shown in FIG. 2, first, the reception-side mobile phone 20 and the transmission-side mobile phone 21 according to the modification of the first embodiment. The configuration will be described with reference to FIG.

  The reception-side mobile phone 20 and the transmission-side mobile phone 21 have the same configuration, and as shown in FIG. 6, the CPU 100, the transmission / reception unit 110, the display unit 120, the input unit 130, and the address book 140, respectively. And a mail management unit 150 that manages transmission / reception of mails with IP addresses and stores mails, and an external interface unit 160. Other components except the mail management unit 150 are the same as those shown in FIG.

  The mail management unit 150 includes a time management unit 151 that manages mail transmission / reception times, an unopened / unopened flag management unit 153 that switches an unopened / unopened flag for each mail, and a title setting unit (group) that sets a mail title Name setting unit) 155. Note that in e-mail with an IP address, the title is the group name.

  Next, the operation of the in-vehicle IP communication system according to the modification will be described. Of the operations of the in-vehicle IP communication system according to the modification, the operation in which the in-vehicle IP communication terminal 1 performs group setting will be described with reference to FIG. However, the operation when the vehicle equipped with the in-vehicle IP communication terminal 1 performs group traveling and the operation when the in-vehicle IP communication terminal 1 cancels the group setting are the same as those shown in FIGS. 4 and 5. Therefore, the description is omitted.

  (A) First, in step S400, the connection between the in-vehicle IP communication terminal 1 and the receiving-side mobile phone 20 is confirmed. In step S410, the in-vehicle IP communication terminal 1 reads the mail with the IP address from the latest mobile phone 20 in order of the time stamp.

  (B) If reading fails in step S420, the mail with the IP address is set to an unopened state, and when reading again, only the mail with an unopened IP address is read. Specifically, the in-vehicle IP communication terminal 1 first reads all mails to which the other party's IP address is attached, and when reading fails, sets the mail to an unopened state and reads it again. Read only emails set to unopened.

  (C) The in-vehicle IP communication terminal 1 takes out the IP address from the mail with the IP address in step S430. In step S440, it is determined whether the source address is registered in the address book 140. If it is not registered (No in step S440), the user is confirmed to register the IP address in step S450. That is, after confirming whether or not the IP address is set as the group IP address of the in-vehicle IP communication terminal 1, it is stored in the group IP address storage unit 30 in step S460. In step S470, IP addresses having the same mail title are set as the same group. At this time, if the e-mail title is not set, the process proceeds to step S480 without performing step S470. Finally, in step S480, the user is notified that the group IP address has been set.

  As described above, according to the modification of the first embodiment, the IP address read from the mail with the IP address is received by the receiving-side mobile phone 20 and the group IP of the in-vehicle IP communication terminal 1 is received. Since group setting is performed using the IP address stored in the address storage unit 30, group setting can be performed with a simple operation. In addition, group settings can be canceled with a simple operation. Furthermore, since the mail with an IP address is set to an unopened state when reading fails, and the mail with an unopened IP address is read when reading again, group setting can be performed efficiently. Since mails with IP addresses are read in the order of time stamps, group settings can be made efficiently. If the destination (sender) of the received mail is not registered in the address book 140 of the receiving side mobile phone 20, it is confirmed whether or not it is set as the IP address of the group of the in-vehicle IP communication terminal 1, so that spam mail etc. E-mails received from unspecified recipients will no longer be automatically registered. Since the title of the mail with the IP address is stored in the in-vehicle IP communication terminal 1 as a group name, the group name can be easily set.

(Second Embodiment)
As shown in FIG. 8, the in-vehicle IP communication system according to the second embodiment includes a receiving-side mobile phone 20 and a sending-side mobile phone 21 that transmit and receive mail to each other, and reception that can be connected to the receiving-side mobile phone 20. Side in-vehicle IP communication terminal 1 and transmission-side in-vehicle IP communication terminal 2 connectable to the transmitting-side mobile phone 21.

  The receiving-side in-vehicle IP communication terminal 1 includes an external interface unit 70, an IP transmission / reception unit 40, an IP address storage unit 50, a group IP address storage unit 30, an in-vehicle information terminal 60, a group IP address storage unit 30, an IP The transmission / reception unit 40, the IP address storage unit 50, the in-vehicle information terminal 60, and the CPU 10 connected to the external interface unit 70 are provided. The components of the receiving-side in-vehicle IP communication terminal 1 are the same as those shown in FIG.

  Similarly, the transmission-side in-vehicle IP communication terminal 2 includes an external interface unit 71, an IP transmission / reception unit 41, an IP address storage unit 51, a group IP address storage unit 31, an in-vehicle information terminal 61, and a group IP address storage unit. 31, IP transmission / reception unit 41, IP address storage unit 51, in-vehicle information terminal 61, and CPU 11 connected to external interface unit 71. Each component of the transmission-side in-vehicle IP communication terminal 2 is the same as that of the reception-side in-vehicle IP communication terminal 1 shown in FIG.

  The receiving-side mobile phone 20 and the transmitting-side mobile phone 21 in FIG. 8 have the same configuration, and as shown in FIG. 9, the CPU 100, the transmission / reception unit 110, the display unit 120, the input unit 130, It has an address book 140, a mail management unit 150, and an external interface unit 160. Other components except the mail management unit 150 are the same as those shown in FIG.

  The mail management unit 150 includes a time management unit 151 that manages mail transmission / reception times, an encryption unit 152, an unopened / unopened flag management unit 153 that switches an open / unopened flag for each mail, and an email icon with an IP address. It has a management unit 154 and a title setting unit (group name setting unit) 155 for setting the title of the mail. Note that in e-mail with an IP address, the title is the group name. Therefore, the title of the mail with the IP address is stored in the in-vehicle IP communication terminals 1 and 2 as a group name.

  The encryption unit 152 performs an encryption process such as SSL for the mail created in text, and returns the encrypted mail to text. Therefore, the mail with the IP address is encrypted and transmitted / received. A mail icon management unit 154 with an IP address manages so that a mail with an IP address is displayed as an icon with an IP address. More specifically, an icon indicating that the mail has an IP address is displayed on the display unit 120.

  Next, the operation of the in-vehicle IP communication system shown in FIGS. 8 and 9 will be described. Of the operations of the in-vehicle IP communication system shown in FIGS. 8 and 9, the operation when the transmitting-side in-vehicle IP communication terminal 2 performs group setting, in particular, the transmitting-side mobile phone 21 creates a mail with an IP address. The operation until transmission will be described with reference to FIG. However, the operation when the vehicle on which the reception-side in-vehicle IP communication terminal 1 and the transmission-side in-vehicle IP communication terminal 2 are respectively mounted performs group operation, and the operation when the in-vehicle IP communication terminals 1 and 2 cancel the group setting, Since they are the same as those shown in FIG. 4 and FIG.

  (A) First, in step S500, the connection between the transmission-side mobile phone 21 and the transmission-side in-vehicle IP communication terminal 2 mounted on the group vehicle is confirmed. In step S510, the transmission-side mobile phone 21 acquires the IP address of the communication partner to be transmitted for group setting from the transmission-side in-vehicle IP communication terminal 2, and in step S520, stores the IP address in the mail format.

  (B) In step S530, the transmitting-side mobile phone 21 sets a group setting expiration date in the mail. The receiving-side vehicle IP communication terminal 1 connected to the receiving-side mobile phone 20 cancels the group setting simultaneously with the expiration of the expiration date. In step S540, the group name setting unit 155 of the transmitting mobile phone 21 sets the name of the group that performs group running as the title of the mail. Therefore, the mail with the IP address is displayed as an icon with the IP address in the mail list of the receiving side mobile phone 20 and can be confirmed on the display unit 120 of the receiving side mobile phone 20.

  (C) In step S550, a normal mail is stored in a text format. Here, since the IP address is attached to the mail, the encryption unit 152 of the transmitting-side mobile phone 21 is used to protect the privacy of the group vehicle. Performs encryption processing such as SSL on the mail with the IP address, and transmits the mail with the IP address in step S560. In step S570, the user is notified that the mail with the IP address has been transmitted via the display unit 120.

  As described above, according to the second embodiment, mail with an IP address is transmitted / received by the mobile phones 20 and 21, and the IP address read from the mail with the IP address is stored in the receiving-side in-vehicle IP communication terminal 1, Since group setting is performed using the IP address, group setting can be performed with a simple operation. You can also cancel group settings with a simple operation. Furthermore, since the mail with the IP address is encrypted and transmitted / received, the IP address is not stolen by a third party on the way, or the group setting is not arbitrarily made. When the transmission-side in-vehicle IP communication terminal 2 and the transmission-side mobile phone 21 are connected, the transmission-side mobile phone 21 acquires an IP address from the transmission-side in-vehicle IP communication terminal 2 and stores the IP address in a mail format. A mail with an IP address can be created. In addition, by setting the expiration date of the group setting for the mail with the IP address, there is no possibility that the group setting is left unattended. Since it is displayed as an icon on the display unit 120 that it is a mail with an IP address, it is possible to easily determine a mail with an IP address from among a large number of mails stored in the mobile phones 20 and 21.

(Other embodiments)
As described above, the present invention has been described by the first and second embodiments and the modifications thereof. However, it should be understood that the description and drawings constituting a part of this disclosure limit the present invention. is not. From this disclosure, various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art.

  In the embodiment and the modification, the work for creating the IP address-added mail is performed by the receiving-side mobile phone 20 or the sending-side mobile phone 21, but the in-vehicle IP communication terminal 1 creates the mail and receives the receiving-side mobile phone 20. You may send to.

  Thus, it should be understood that the present invention includes various embodiments and the like not described herein. Therefore, the present invention is limited only by the invention specifying matters according to the scope of claims reasonable from this disclosure.

  As described above, according to the inventions according to claims 1 and 9, an IP address is transmitted / received when a mobile phone transmits / receives mail, and the IP address is set as an IP address of a group of in-vehicle IP communication terminals 1. So you can easily set the group.

  According to the second aspect of the present invention, when the in-vehicle IP communication terminal and the mobile phone are connected, the in-vehicle IP communication terminal acquires the mail including the IP address, and uses the IP address included in the mail as the group IP address. Since the setting is made, the mobile phone and the in-vehicle IP communication terminal can automatically exchange IP addresses.

  According to the third aspect of the present invention, even if the acquisition of the IP address from the mail fails, the IP address can be reliably read because it is read again.

  According to the fourth aspect of the present invention, since the user is shown whether the group IP address has been set normally or has failed, the group setting can be confirmed.

  According to the fifth aspect of the present invention, since the group setting is performed by changing the on / off flag of the group IP address from off to on, the previously stored group IP address can be used.

  According to the sixth aspect of the present invention, the group setting is canceled by changing the on / off flag of the group IP address from on to off, so that the group setting can be easily performed next time.

  According to the seventh aspect of the present invention, since the group setting is canceled by turning off the on / off flag of the group IP address after a certain period of time has passed, there is no fear of leaving the group set.

  According to the eighth aspect of the present invention, when returning to the home and stopping the engine, the group setting is canceled by turning the on / off flag of the group IP address from on to off, so that there is no fear of leaving the group set.

  According to the tenth aspect of the present invention, when reading fails, unopened mail is set, and when reading again, unopened mail with an IP address is read. Therefore, group setting can be performed efficiently.

  According to the eleventh aspect of the present invention, mails are read in the order of time stamps, so that group setting can be performed efficiently.

  According to the invention described in claim 12, when the destination of the received mail is not registered in the address book 140 of the mobile phones 20 and 21, it is set as the IP address of the group of the in-vehicle IP communication terminals 1 and 2 Since confirmation is made with the user, the IP address written in the junk mail (mail received from an unspecified partner) is not automatically registered.

  According to the thirteenth aspect of the invention, since the mail including the IP address is encrypted and transmitted / received, the IP address is not stolen and the group setting is not arbitrarily made.

  According to the invention described in claim 14, when the in-vehicle IP communication terminals 1 and 2 are connected to the mobile phones 20 and 21, the mobile phones 20 and 21 obtain an IP address from the in-vehicle IP communication terminals 1 and 2, and the IP Since the address is stored in a mail format, it is possible to easily create a mail with an IP address.

  According to the fifteenth aspect of the present invention, since the expiration date of the group setting is included in the mail, there is no worry of leaving the group set.

  According to the sixteenth aspect of the present invention, since it is displayed as an icon that it is a mail with an IP address, it becomes easy to find a mail with an IP address from a large number of mails.

  According to the invention described in claim 17, since the title of the mail with IP address is stored as the group name in the in-vehicle IP communication terminals 1 and 2, the group name can be easily set.

1 is a block diagram showing a vehicle IP communication system according to a first embodiment of the present invention. It is a block diagram which shows the receiving side mobile phone and transmitting side mobile phone of FIG. It is a flowchart which shows operation | movement when a vehicle-mounted IP communication terminal performs group setting. It is a flowchart which shows operation | movement when the vehicle carrying an in-vehicle IP communication terminal performs group traveling. It is a flowchart which shows operation | movement when a vehicle-mounted IP communication terminal cancels | releases a group setting. It is a block diagram which shows the receiving side mobile telephone and transmission side mobile telephone concerning the modification of 1st Embodiment. It is a flowchart which shows operation | movement when the vehicle-mounted IP communication terminal concerning a modification performs group setting. It is a block diagram which shows the IP communication system for vehicles concerning the 2nd Embodiment of this invention. It is a block diagram which shows the receiving side mobile phone and transmitting side mobile phone which were shown in FIG. It is a flowchart which shows operation | movement when the vehicle-mounted IP communication system of FIG. 8 performs group setting.

Explanation of symbols

1, 2 ... In-vehicle IP communication terminal 10, 100 ... CPU
11 ... CPU
DESCRIPTION OF SYMBOLS 20 ... Reception side mobile phone 21 ... Transmission side mobile phone 30, 31 ... Address storage part 40, 41 ... IP transmission / reception part 50, 51 ... IP address storage part 60, 61 ... In-vehicle information terminal 70, 71 ... External interface part 110 ... Transmission / reception unit 120 ... Display unit 130 ... Input unit 140 ... Address book 150 ... Mail management unit 151 ... Time management unit 152 ... Encryption unit 153 ... Open / unopened flag management unit 154 ... Mail icon management unit 155 ... Group name setting unit 160 ... External interface section

Claims (17)

An IP communication terminal including an external interface unit that communicates with a mobile phone, an IP transceiver unit capable of IP communication, an IP address storage unit, and a group IP address storage unit;
The IP address storage unit stores an IP address of the IP communication terminal,
The external interface unit transmits the IP address of the IP communication terminal to the mobile phone, obtains the IP address of the communication partner from the mail stored in the mobile phone,
The group IP address storage unit sets an IP address of the communication partner as an IP address of a group of the IP communication terminals.   When the IP communication terminal and the mobile phone are connected, the IP communication terminal acquires the IP address of the communication partner from the mail stored in the mobile phone and sets it as the IP address of the group The IP communication system according to claim 1.   3. The IP communication terminal according to claim 1, wherein, when the IP address of the communication partner is not set as the IP address of the group, the IP communication terminal acquires the IP address of the communication partner from the mobile phone again. IP communication system.   When the IP communication terminal acquires the IP address of the communication partner from the mail stored in the mobile phone and sets the IP address of the communication partner as the IP address of the group, the setting is normally performed. The IP communication system according to any one of claims 1 to 3, wherein the information is presented. The group IP address set in the group IP address storage unit includes an on / off flag indicating whether the group setting of the IP address of the group is valid or invalid,
The IP communication system according to claim 1, wherein group setting is performed by converting the on / off flag from off to on. The group IP address set in the group IP address storage unit includes an on / off flag indicating whether the group setting of the IP address of the group is valid or invalid,
The IP communication system according to claim 1, wherein the group setting is canceled by converting the on / off flag from on to off.   The IP communication system according to claim 6, wherein the group setting is canceled by converting the flag of the IP address of the group after a certain time has elapsed since the group setting has been performed, from on to off. The IP communication terminal further includes home registration means for registering a home position, and home arrival detection means for detecting arrival at the home,
The IP communication terminal converts the on / off flag from on to off and cancels the group setting when the home arrival detection means detects that the engine has been stopped due to arrival at the home. Item 7. The IP communication system according to Item 6. A mobile phone capable of sending and receiving mail and an IP communication terminal connectable to the mobile phone;
The IP communication terminal includes an external interface unit that communicates with the mobile phone, an IP transceiver unit capable of IP communication, an IP address storage unit, and a group IP address storage unit.
The IP address storage unit stores an IP address of the IP communication terminal,
The mobile phone transmits a mail with the IP address of the IP communication terminal to a communication partner of group travel, receives a mail with the IP address of the communication partner from the communication partner of the group travel,
The group IP address storage unit sets an IP address of the communication partner as an IP address of a group of the IP communication terminals.   The IP communication terminal first reads all mail with the IP address of the communication partner, sets the mail to an unopened state when the reading fails, and sets the mail to the unopened state when it is read again. The IP communication system according to claim 9, wherein a mail set in a state is read.   11. The IP communication system according to claim 10, wherein the IP communication terminal reads mails with the IP addresses of the communication counterparts in order of time stamps.   If the IP address attached to the mail received by the mobile phone is not registered in the address book of the mobile phone, does the IP communication terminal set the IP address as the IP address of the group of the IP communication terminals? The IP communication system according to claim 9, wherein the IP communication system checks whether or not.   10. The IP communication system according to claim 9, wherein the mail with the IP address is encrypted and transmitted / received.   The mobile phone acquires the IP address of the communication partner from the IP communication terminal when the IP communication terminal and the mobile phone are connected, and stores the IP address in a mail format. 9. The IP communication system according to 9.   10. The IP communication system according to claim 9, wherein the mail received by the mobile phone includes a group setting expiration date.   The IP communication system according to claim 9, wherein an icon indicates that the mail has the IP address.   10. The IP communication system according to claim 9, wherein a title of the mail with the IP address is stored in the IP communication terminal as a group name.

Images