JP2008033744A - Emergency information display system, on-vehicle device and radio communication device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the convenience in calling from a public telephone by displaying a map obtained by emergency call contact information on a cellphone so that the public telephone can be quickly searched. <P>SOLUTION: In the emergency information display system, an on-vehicle device 101 includes: an on-vehicle machine information storage part 1017; an outdoor telephone facility position storage part 1016; an outdoor telephone facility search part 1036 searching the position of a peripheral outdoor telephone setting facility; an emergency call information transfer part 1035 transferring emergency call contact information to the cellphone; and a communicability determination part 1034 determining the communicability with an emergency call service center. The cellphone 102 includes an emergency call contact information receiving part 1043 receiving emergency call contact information of the on-vehicle device 101. When the on-vehicle device 101 determines communication connection to the emergency call service center 106 cannot be performed through the cellphone 102, the emergency call contact information is displayed and outputted on the cellphone 102. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an emergency information display system, an in-vehicle device, and a wireless communication device, and particularly to an emergency information display system, an in-vehicle device, and a wireless communication device related to a notification to an emergency notification service center when communication by the wireless communication device is not possible.

  Currently, in the event of a car accident, a passenger's sudden illness, etc., an emergency call service is provided to assist the driver and passenger. The emergency call service is a service that uses an in-vehicle device such as a car navigation and a wireless communication device such as a mobile phone. When trouble occurs, the driver or passenger uses a wireless communication device to connect to the emergency call service center, transmit data such as current location information and vehicle information, and make a call with the operator of the emergency call service center . When an emergency call service center operator receives a report from a car, he / she contacts the police, fire department, arranges an ambulance, etc., through information received from the vehicle and a call with the driver, and saves the driver's life. Provide support.

  However, since the emergency call service uses wireless communication such as a mobile phone, there is a problem that it is impossible to report to the emergency call service center when trouble occurs in a place outside the communication area such as a tunnel. In such cases, the emergency call service center urges you to contact the nearest public telephone. However, when the driver and passengers are not familiar with the geography of the destination, the location of the public telephone is not known, and there is a possibility that the report cannot be made without finding the contact location.

  Various technologies aimed at solving the problems related to out of communication range in such an emergency call service system have been disclosed. Patent Document 1 discloses a technique for providing a second wireless unit that wirelessly communicates with another vehicle and making a report in cooperation with the other vehicle in preparation for a case where communication with the emergency call center is not possible. Moreover, the vehicle equipment described in Patent Document 2 has a configuration in which a removable storage means for storing vehicle position information and the like is provided in the vehicle equipment. If the car phone is out of service area when trouble occurs, the storage means is removed from the in-vehicle device, brought to the public telephone, and attached to this so that the center can be contacted.

JP 2002-185647 A JP-A-7-210788

  According to Patent Document 1, the problem can be avoided by reporting to the emergency call center in cooperation with another vehicle. However, in order to communicate with other vehicles, it is assumed that a car having the same emergency call device is traveling nearby, and the same emergency call device is used even if there is no traffic or no traffic. If it is not installed, there is a problem that communication with other vehicles cannot be performed and the emergency call service center cannot be notified.

  According to Patent Document 2, the in-vehicle device searches and displays the position of the public telephone when a trouble occurs, and the storage means attached to the in-vehicle apparatus is taken to the public telephone and attached to the emergency call service center. Since automatic transmission is possible, communication can be performed, so that quicker notification is possible. However, there is a concern that the cost of the in-vehicle device may be increased because a new mechanism for detaching the storage unit must be provided in the in-vehicle device. Moreover, since it is assumed that the removable storage means can be used on a public telephone, there is a problem that it cannot be used without a public telephone corresponding to this.

  The present invention solves the above-described problems, and provides an emergency information display system, an in-vehicle device, and a wireless communication device that are improved in convenience for reporting on public telephones.

  The above-described problem includes a wireless communication terminal, a GPS receiving unit that removably connects the wireless communication terminal, receives a radio wave transmitted from a GPS satellite, a map data storage unit that stores map data, and an overall control unit. The in-vehicle device further includes an emergency call requesting unit and an outdoor telephone position storage unit, and the overall control unit accepts a call request from the emergency call requesting unit. When the wireless communication terminal is out of the communication range, the overall control unit detects the current position based on the data from the GPS reception unit, and retrieves the telephone position near the current position from the outdoor telephone position storage unit. This can be solved by an emergency information display system that searches a map around the current position from the map data storage unit, arranges the current position and the telephone position on the map, and displays them on the wireless communication terminal.

  Also, it consists of a GPS receiving unit that receives radio waves transmitted from GPS satellites, a map data storage unit that stores map data, and an overall control unit, and connects to the wireless communication terminal via this wireless communication terminal Performing communication, further comprising an emergency call request unit and an outdoor telephone position storage unit, the overall control unit, upon receiving a call request from the emergency call request unit, determines whether the wireless communication terminal can communicate, When the overall control unit determines that the wireless communication terminal is in a communication disabled state, the overall control unit detects the current position based on the data from the GPS receiving unit, searches the outdoor telephone position storage unit for the telephone position in the vicinity of the current position, This can be solved by an in-vehicle device that retrieves a map around the current position from the map data storage unit, places the current position and the telephone position on the map, and outputs them so as to be displayed on the wireless communication terminal.

  The vehicle-mounted device further includes an antenna that transmits and receives radio waves to and from the base station, a wireless interface unit connected to the antenna, a voice interface including a speaker and a microphone, a display unit, and an overall control unit. When the current location cannot communicate with the base station, the wireless communication terminal that displays the map information created by the in-vehicle device on the display unit can solve the problem.

  According to the present invention, when an emergency call is made with a wireless communication device such as a mobile phone in the event of a trouble in a car, when an emergency call service center cannot be communicated outside the communication area, an outdoor phone such as a public telephone is called. The location information of the vehicle involved in reporting, the location information of nearby outdoor telephone facilities, and the emergency call contact information such as the phone number to the emergency call service center are transferred to the connected mobile phone and displayed. The whistleblower can watch the mobile phone and go to the nearest telephone installation facility location to call the emergency call service center. In addition, since the location information of the vehicle is also displayed on the mobile phone, it is possible to send more accurate information to the emergency call service center, so that the call can be made more reliably from the outdoor phone and the convenience is improved. There is.

  Hereinafter, embodiments of the present invention will be described using examples with reference to the drawings. The same reference numerals are assigned to substantially the same parts, and the description will not be repeated. Here, FIG. 1 is a block diagram illustrating a car navigation system and an emergency call service. FIG. 2 is a block diagram illustrating a mobile phone. FIG. 3 is a flowchart of emergency call processing of the car navigation system. FIG. 4 is a communication frame of emergency call contact information between the car navigation system and the mobile phone. FIG. 5 is an emergency call contact information communication sequence diagram between the car navigation system and the mobile phone. FIG. 6 is a flowchart of the emergency call contact information transfer process of the car navigation system. FIG. 7 is a flowchart of the mobile phone emergency call contact information reception process. FIG. 8 is an emergency call contact information display GUI of a mobile phone.

  In FIG. 1, a communication system 2000 for emergency call service includes a car navigation system (hereinafter referred to as “car navigation”) 101, a mobile phone 102, a radio base station 103 that establishes a radio line with the mobile phone 102, and a mobile phone carrier. Mobile telephone communication network 104, public line network 105, and emergency call service center 106 connected to public line network 105. Note that the mobile phone communication network 104 includes a mobile switching center (not shown) that accommodates a plurality of radio base stations including the radio base station 103 and performs circuit switching connection to the public telephone network 105.

  With the communication system 2000 described above, the car navigation system 101 performs communication control of the mobile phone 102 from the outside, and communicates with the emergency call service center 106 via the radio base station 103, the mobile phone communication network 104, and the public line network 105.

  The car navigation system 101 has a mobile phone 102, a GPS reception unit 1012, a car navigation operation unit 1013, a car navigation display unit 1014, a map data storage unit 1015, an outdoor telephone facility location data storage unit 1016, and an emergency call centered on the car navigation system overall control unit 1011. An in-vehicle information storage unit 1017, an emergency call request unit 1018, and a hands-free unit 1019 are shown. The car navigation overall control unit 1011 includes a CPU and memory (ROM, RAM, etc.) not shown.

  Here, the entire car navigation 101 is controlled by the CPU executing the installed software including the control of each connected peripheral component and the communication control with the mobile phone 102 to be described later. System control is performed, and various functions of the car navigation system 101 are provided to the user.

  The GPS receiver 1012 receives radio waves sent from GPS satellites. The car navigation overall control unit 1011 receives input from the GPS receiving unit 1012 and detects latitude and longitude data that are the current vehicle position. The car navigation operation unit 1013 is used by the user of the car navigation 101 to input various function settings. The car navigation display unit 1014 displays various information including route guidance map data. The map data storage unit 1015 is a part that stores a road map for route guidance, and includes a recording medium such as a CD-ROM or a DVD-ROM and a drive device that reads data from these recording media. Specifically, the outdoor telephone facility installation data storage unit 1016 is provided to store latitude / longitude data indicating the location of a facility where a telephone is installed, such as a public telephone box installation location, a restaurant, or a convenience store. It is. The outdoor telephone facility installation position data storage unit 1016 is shown separately from the map data storage unit 1015 here, but may be configured to be included in the memory of the map data storage unit 1015 or the car navigation overall control unit 1011.

  Normally, when using the emergency call information service, the user makes a service contract in advance and registers information such as the user's personal information, the ID of the vehicle-mounted device to be used, and the phone number of the mobile phone 102. The emergency call in-vehicle information storage unit 1017 stores various registration information related to communication connection with the emergency call service center 106, the telephone number of the emergency call service center 106, and the like. The emergency call request unit 1018 is an operation switch operated by a user when reporting to the emergency call service center 106 or a sensor that detects an automobile accident. The emergency call request unit 1018 requests the car navigation overall control unit 1011 to make an emergency call. A microphone 1020 and a speaker 1021 are connected to the handsfree unit 1019. The hands-free unit 1019 performs signal processing such as echo cancellation of an audio signal in the external interface of the mobile phone 102 and enables a call without the mobile phone 102 using the microphone 1020 and the speaker 1021. The hands-free unit 1019 is also used when making a call with an operator of the emergency call service center 106 at the time of an emergency call.

  Next, a detailed configuration of the car navigation overall control unit 1011 will be described. As processing performed by the overall navigation control unit 1011, communication processing with the emergency call service center 106 using the mobile phone 102 is performed in addition to navigation processing which is a basic function of the car navigation 101.

  Hereinafter, each processing unit shown in the car navigation overall control unit 1011 related to communication to the emergency call service center 106 will be described. The emergency call processing unit 1031 performs communication processing with the emergency call service center 106. The emergency call processing unit 1031 includes a mobile phone communication control processing unit 1032, an emergency call service center communication processing unit 1033, a communication enable / disable determination processing unit 1034, an emergency call contact information transfer processing unit 1035, and an outdoor telephone facility search processing unit 1036. It is composed of Note that each processing unit in the emergency call processing unit 1031 is realized by causing a computer to function to execute the operation of each processing unit by a program.

  The mobile phone communication control processing unit 1032 performs a prescribed sequence control process related to data communication and voice communication using the mobile phone 102. The cellular phone communication control processing unit 1032 determines the success or failure of communication establishment from the result of the prescribed sequence control processing, and notifies the emergency call service center communication processing unit 1033 of the result. In addition, the mobile phone communication control processing unit 1032 also receives line state information such as within and outside the wireless communication range of the wireless base station 103 from the mobile phone 102 and notifies the communication enable / disable determination processing unit 1034 described later of the wireless line state information. Also do.

  The emergency call service center communication processing unit 1033 performs communication protocol processing determined in advance with the emergency call service center 106, receives a communication establishment success response notification from the mobile phone communication control processing unit 1032, and performs communication. Perform protocol processing.

  The communication enable / disable determination processing unit 1034 receives the wireless line state information received from the mobile phone 102 and the emergency call service center communication processing unit 1033 receives a communication establishment result using the communication protocol with the emergency call service center 106. The communication enable / disable determination processing unit 1034 performs processing for determining whether communication with the emergency call service center 106 is possible or not from these pieces of information, and notifies the emergency call information portable transfer processing unit 1035 of the determination result of communication failure.

  The emergency call contact information transfer processing unit 1035 performs a process of transferring emergency call contact information necessary for a driver or a passenger to make a phone call to the emergency call service center 106 using an outdoor phone to the mobile phone 102. In response to the notification of communication failure from the communication enable / disable determination processing unit 1034, the processing is performed.

  The emergency call contact information includes at least the telephone number of the emergency call service center 106 stored in the in-vehicle information storage unit 1017 for emergency call, current location information based on data from the GPS receiver 1012, and output from the outdoor telephone facility search processing unit 1036. Data on the location of outdoor telephone facilities such as public telephone boxes around the current location.

The outdoor telephone facility search processing unit 1036 performs processing for searching for an outdoor telephone facility around the current position from the latitude / longitude data obtained from the GPS receiving unit 1012 and the outdoor telephone facility position data storage unit 1016. The outdoor telephone facility search processing unit 1036 further performs generation processing of the outdoor telephone facility position-added map data indicating the outdoor telephone set position searched on the map data obtained from the map data storage unit 1015 based on the search result. Next, the internal configuration of the mobile phone 102 will be described with reference to FIG. In FIG. 2, in the mobile phone 102, the mobile phone overall control unit 1021 is configured based on a CPU and memory (ROM, RAM, etc.) not shown. The mobile phone overall control unit 1021 has a configuration in which peripheral components are connected as shown in the figure. The mobile phone overall control unit 1021 controls each peripheral component to be connected, and implements software (program) to be installed. The system control of the entire mobile phone 102 is performed by the CPU. Hereinafter, each peripheral component connected to the mobile phone overall control unit 1021 will be described.

  The cellular phone 102 includes the above-described cellular phone overall control unit 1021, the antenna 1022 unit that transmits and receives radio waves, the wireless I / F unit 1023 that modulates and demodulates signals with the antenna unit 1022, a speaker 1024, a microphone 1025, and a voice call A portable voice I / F unit 1026 for performing transmission / reception, a portable display unit 1027 for displaying and outputting various information in the cellular phone 102 such as time information and incoming call information, a portable operation unit 1028 including a numeric keypad for dialing, a car navigation system An emergency call contact information storage unit 1029 for storing the emergency call contact information received from 101 is configured. Here, the portable audio I / F unit 1026 performs analog / digital audio signal A / D conversion, D / A conversion, and audio codec processing in accordance with a specified wireless band. The emergency call contact information received from the car navigation system 101 is also displayed on the portable display unit 1027.

  Next, processing in the mobile phone overall control unit 1021 will be described. In addition to voice communication processing and data communication processing, which are basic functions of the mobile phone 102, emergency call contact information for performing communication processing of emergency call contact information with the car navigation 101 is performed as processing performed by the mobile phone overall control unit 1021. A reception processing unit 1043 is provided.

  Hereinafter, each processing unit in the mobile phone overall control unit 1021 will be described. The external terminal communication control processing unit 1041 performs a prescribed sequence control process for performing data communication, voice communication, and the like under the control of the external terminal. Specifically, the external terminal communication control processing unit 1041 performs processing by communication with the mobile phone communication control processing unit 1032 in the car navigation 102 described above. The wireless communication control processing unit 1042 is a prescribed wireless communication protocol process for performing data communication or voice communication with the wireless base station 103 via the wireless line based on the processing result in the external terminal communication control processing unit 1041. I do. The radio communication control processing unit 1042 also monitors the radio field strength received from the radio base station 103 via the antenna 1022 and the radio I / F unit 1023, the radio line status such as within / out of service area, etc. A predetermined command is formed and output to the car navigation 101 side via the external terminal communication control processing unit 1041. The emergency call contact information reception processing unit 1043 performs a predetermined sequence control process to be described later with the emergency call contact information transfer processing unit 1035 in the car navigation 101, and performs a process of receiving emergency call information transferred from the car navigation 101. . The received emergency call contact information is sequentially stored in the emergency call contact information storage unit 1029, and when the reception is completed, a process of displaying and outputting to the portable display unit 1027 is also performed.

  Next, an operation flow of the emergency call processing unit 1031 of the car navigation overall control unit 1011 will be described with reference to FIG. In FIG. 3, in step 301, the input state of the emergency call request unit 1018 is monitored, and processing for determining whether or not there is a report request to the emergency call service center 106 is performed. If it is determined from the input from the emergency call request unit 1018 that there is an emergency call request (Yes), the emergency call processing unit 1031 performs an emergency call service center telephone number reading process (S302). When step 301 is No, the process returns to step 301 again. The emergency call service center telephone number reading process of step 302 is a process of reading the telephone number to the emergency call service center 106 stored in the emergency call onboard information storage unit 1017.

  The emergency call processing unit 1031 transmits a data communication connection request command to the mobile phone 102 (S303). This data communication connection request command transmission processing is a mode setting command for setting the data communication / voice communication line connection mode for the mobile phone 102, the telephone number read in step 302 (the telephone number of the emergency call service center 106). This is a process for generating and transmitting a dialing command for making a dialing request using.

  The emergency call processing unit 1031 waits for a response from the mobile phone 102 (S304). Upon receiving the response, the emergency call processing unit 1031 receives and analyzes the response command from the mobile phone 102, and performs communication enable / disable determination processing (S305). If it is determined in step 305 that data communication is possible, a notification process to the emergency call service center 106 is performed (S306), and the process ends.

  On the other hand, if it is determined in step 305 that data communication is not possible, the process proceeds to emergency call contact information transfer processing (S307). Here, the emergency call contact information transfer process is a process for communicating with the emergency call contact information reception processing unit 1043 provided in the mobile phone 102 and transferring the emergency call contact information.

  Next, a communication protocol between the emergency call contact information transfer processing unit 1035 of the car navigation 101 and the emergency call contact information reception processing unit 1043 of the mobile phone 102 will be described. FIG. 4 is a communication frame used between the car navigation 101 and the mobile phone 102 when transferring emergency call contact information. In FIG. 4, the top of the communication frame is the data type, and the definition is “1” for external connection start request, “2” for external connection end request, “3” for external connection start confirmation, “4” for external “5” is an emergency call contact information transmission request, and “6” is an emergency call contact information reception confirmation. Next to the data type 41 is a data length 42. The data length 42 is the number of bytes of the emergency call contact information data 43 following the data length 42. In the case of a communication frame not including the emergency call contact information data 43, 0 is set in the data length 42.

  With reference to FIG. 5 thru | or FIG. 7, the communication sequence of emergency call contact information is demonstrated. In FIG. 5, first, when receiving an emergency call request, the car navigation 101 performs a data communication connection sequence process for communication connection with the emergency call service center (S501), and performs a communication enable / disable determination process (S502). . Here, the description in step 502 is continued assuming that communication is impossible. The subsequent communication sequence of emergency call contact information transfer is a process in the emergency call contact information transfer processing unit 1035 of the car navigation 101 and the emergency call information reception processing unit 1043 of the mobile phone 102.

  The car navigation 101 transmits an external connection start request to the mobile phone 102 (S503). The mobile phone 102 that has received the external connection start request transmits an external connection start confirmation to the car navigation 101 (S504). The car navigation 101 that has received the confirmation of the start of external connection transmits an emergency call contact information transmission request to the mobile phone 102 (S505). The mobile phone 102 that has received the emergency call contact information transmission request transmits an emergency call contact information reception confirmation to the car navigation device 101 (S506). This emergency call contact information transmission request includes one of the emergency call service center telephone number, the current location name, and the map information indicating the telephone facility location. The emergency call contact information transmission request (S508) and the emergency call contact information reception are received. By repeating the confirmation (S509), the emergency call contact information described above is taken into the mobile phone 102. The car navigation system 101 that has finished transmitting the emergency call contact information transmits an external connection end request to the mobile phone 102 (S510). The mobile phone 102 that has received the external connection end request transmits an external connection end confirmation to the car navigation 101 (S504), and displays emergency call information on the display screen (S512).

  In FIG. 6, the emergency call contact information transfer processing unit 1035 of the car navigation 101 first generates an external connection start frame and performs transmission processing to the mobile phone 102 (S601). The external connection start frame generated in step 601 is a communication frame in which the external connection start request “1” is set as the data type and “0” is set as the data length. The car navigation 101 waits for an external connection start confirmation response (S602).

  In step 602, when the car navigation system 101 receives an external connection start confirmation frame from the mobile phone 102, the car navigation system 101 performs an emergency call service center telephone number reading process (S603). The car navigation 101 further performs current position information acquisition processing (S604). Here, as described above, step 603 is a process of reading the telephone number stored in the emergency call in-vehicle information storage unit 1017, and step 604 is the latitude / longitude data from the received signal from the GPS receiving unit 1012. It is a process to detect. In step 604, a process of acquiring the current location name (location number) on the map of the current location from the latitude / longitude data and the map data storage unit 1015 is also performed. This is a process of extracting character string data indicating the location of the vehicle such as “near the xxx city yyy town zzz intersection” from the map data storage unit 1015.

  Next, the car navigation system 101 performs an outdoor telephone facility search process (S605). The outdoor telephone facility search process is a process of searching for a telephone facility position around the own vehicle from the acquired latitude / longitude data and the outdoor telephone facility position data in the outdoor telephone facility position data storage unit 1016. After the telephone facility position is detected in step 605, outdoor telephone facility position-added map data generation processing is performed (S606). The outdoor telephone facility position-added map data generation processing generates map data in which the vehicle position and the telephone facility position are marked on the map stored in the map data storage unit 1015. The generated map image will be described later with reference to FIG. The data acquired in steps 603 to 606 is emergency call contact information data.

  Next, the car navigation system 101 performs emergency call contact information data number (N) calculation processing (S607). This calculation process is a process for obtaining the number of bytes of emergency call contact information data. The car navigation system 101 that has executed the emergency call contact information data number calculation process executes the emergency call contact information transmission request frame generation and transmission process (S608). In step 608, the emergency call contact information transmission request “4” as the data type, the data length “L”, and the emergency call contact information data are read and set to L bytes of the generated emergency call contact information N bytes. A communication frame is generated and sent to the mobile phone 102. After sending the communication frame, the car navigation 101 waits for an emergency call information reception confirmation response (S609).

  When the car navigation 101 detects the reception of the emergency call notification information reception confirmation frame in step 608, the remaining number of data calculation processing is performed (S610). The process of S609 performs a process of newly setting N as the number of data obtained by subtracting the number of data L transmitted to the mobile phone 102 from the number of data N. Then, the car navigation system 101 performs emergency call contact information remaining data presence / absence detection processing (S610). The remaining data presence / absence detection process checks whether N is 0 or not. If there is remaining data (N is not 0), the process returns to step 608. When it is determined in step 611 that there is no remaining data (N = 0), the process transitions to step 612.

  The car navigation system 101 executes processing for generating an external connection end request frame and transmitting it to the mobile phone 102 (S612). The external connection end request frame is a communication frame in which the external connection end request “2” and the data length “0” are set as the data type. With this communication frame, the mobile phone 102 is notified that all the emergency call contact information data has been transmitted from the car navigation system 101. After sending the communication frame, the car navigation 101 waits for an external connection end request confirmation response (S613).

In step 613, when the car navigation 101 detects reception of the external connection end request confirmation frame from the mobile phone 102, the car navigation 101 ends the emergency call contact information transfer process.
In step 602, step 609, and step 613, when there is no response from the mobile phone, a time-out occurs and a transition is made to error processing (not shown).

  In FIG. 7, the emergency call contact information reception processing unit 1043 of the mobile phone 102 is in an external connection request reception waiting state (S701), and receives an external connection start request frame from the car navigation 101 in step 701. (S702). The communication start preparation process secures resources necessary for the communication process with the car navigation system 102, which is an external terminal, and initializes process variables. The mobile phone 102 generates the next external connection start confirmation frame and transmits it to the car navigation system 101 (S703). The external connection start confirmation frame is a communication frame in which the external connection start confirmation “2” is set as the data type and the data length is set to “0”. After sending the communication frame, the communication frame reception detection process for detecting the communication frame from the car navigation 101 is awaited (S704).

  In step 704, when the mobile phone 102 receives the emergency call contact information transmission request frame, it performs a received data type analysis process (S705). The received data type analysis process checks the data type of the received communication frame. If an emergency call contact information request is received and detected in step 705, an emergency call contact information data extraction process is performed (S706). The emergency call contact information data extraction process is a process for extracting the emergency call contact information data part in the communication frame. Specifically, referring to the data length of the received frame, data corresponding to the data length is read out and sequentially stored in the emergency call contact information storage unit 1029. The mobile phone 102 generates an emergency call contact information reception confirmation frame and transmits it to the car navigation 101 (S707). The emergency call contact information reception confirmation frame is a communication frame in which the emergency call contact information reception confirmation “5” is set in the data type and “0” is set in the data length. By transmitting the emergency call contact information reception confirmation frame, the mobile phone 102 notifies the car navigation 101 that a part of the emergency call contact information has been normally received. The mobile phone 102 returns to step 704 and executes the above process every time it receives an emergency call contact information transmission request frame from the car navigation 101.

  On the other hand, when reception of the external connection end request frame is detected in step 705, the mobile phone 102 performs reception emergency call contact information data display output processing (S708). The received emergency call contact information data display output process is a process of reading the data stored in the emergency call contact information storage unit 1029 and outputting it to the portable display unit 1027.

  Finally, the mobile phone 102 generates an external connection end confirmation frame, transmits it to the car navigation 101 (S709), and ends the emergency call contact information reception process.

In FIG. 8, the mobile display unit 1027 displays the telephone number, current location name, and telephone facility location map of the emergency call service center. In the telephone facility position map, a vehicle position 801 and a telephone facility installation position 802 are displayed.
The whistleblower moves to the telephone facility while looking at this screen, calls the emergency call service center, and reports his / her vehicle position. The current location name in FIG. 8 may be other character data indicating the current location, or may be displayed as latitude and longitude.

  As described above, according to the present embodiment, when troubles such as an accident occur in a car, a report to the emergency call service center 106 is attempted, but it is determined that communication with the emergency call service center 106 is impossible. Displays the emergency call contact information necessary for the driver or passenger to contact the emergency call service center 106 from an outdoor phone such as a public phone on the mobile phone 102 connected in advance. The passenger can go to the outdoor telephone installation location while looking at the map displayed on the mobile phone, and can avoid the situation where it takes time to search for a public telephone. In addition, since the telephone number of the emergency call service center is displayed, it is possible to avoid a situation in which the telephone number is not known and cannot be contacted. Furthermore, since the current location name is also displayed, the current location information of the vehicle can be accurately transmitted to the emergency call service center.

It is a block diagram explaining a car navigation system and an emergency call service. It is a block diagram explaining a mobile phone. It is a flowchart of the emergency call process of a car navigation system. It is a communication frame of emergency call contact information between a car navigation system and a mobile phone. It is an emergency call contact information communication sequence diagram between a car navigation system and a mobile phone. It is a flowchart of the emergency call contact information transfer process of the car navigation system. It is a flowchart of the emergency call contact information reception process of a mobile phone. It is an emergency call contact information display GUI of a mobile phone.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 101 ... Car navigation system, 102 ... Mobile phone, 103 ... Wireless base station, 104 ... Mobile phone communication network, 105 ... Public line network, 106 ... Emergency call service center, 801 ... Mark indicating own vehicle position, 802 ... Outdoor phone Mark indicating facility location, 1011... Car navigation system overall control unit, 1012... GPS receiving unit, 1013... Car navigation operation unit, 1014 ... Car navigation display unit, 1015 ... Map data storage unit, 1016 ... Outdoor phone facility location data storage unit, 1017. In-vehicle information storage unit for emergency call, 1018 ... emergency call request unit, 1019 ... hands-free unit, 1020 ... microphone, 1021 ... speaker, 1031 ... emergency call processing unit, 1032 ... mobile phone communication control processing unit, 1033 ... emergency call service Center communication processing unit, 1034... Communication enable / disable determination processing unit, 1035. Emergency call contact information transfer processing unit, 1036 ... Outdoor telephone facility search processing unit, 1021 ... Mobile phone overall control unit, 1022 ... Antenna unit, 1023 ... Wireless I / F unit, 1024 ... Speaker, 1025 ... Microphone, 1026 ... Mobile voice I / F unit, 1027 ... mobile display unit, 1028 ... mobile operation unit, 1029 ... emergency notification contact information storage unit, 1041 ... external terminal communication control processing unit, 1042 ... wireless communication control processing unit, 1043 ... reception of emergency notification contact information Processing part.

Claims (5)

An in-vehicle device comprising a wireless communication terminal, a GPS receiving unit for releasably connecting the wireless communication terminal, receiving a radio wave transmitted from a GPS satellite, a map data storage unit for storing map data, and an overall control unit; An emergency information display system comprising:
The in-vehicle device further includes an emergency call request unit and an outdoor phone position storage unit,
The overall control unit, when receiving a call request from the emergency call request unit, determines whether the wireless communication terminal can communicate,
When the wireless communication terminal is outside the communication range, the overall control unit detects a current position based on data from the GPS receiving unit, and searches the outdoor telephone position storage unit for a telephone position near the current position. Urgent information display characterized in that a map around the current position is retrieved from the map data storage unit, the current position and the telephone position are arranged on the map and displayed on the wireless communication terminal. system. It consists of a GPS receiver that receives radio waves transmitted from GPS satellites, a map data storage unit that stores map data, and an overall control unit, and communicates via this wireless communication terminal by connecting a wireless communication terminal. In the in-vehicle device to perform
It further includes an emergency call request unit and an outdoor phone position storage unit,
The overall control unit, when receiving a call request from the emergency call request unit, determines whether the wireless communication terminal can communicate,
When the overall control unit determines that the wireless communication terminal is in a communication disabled state, the overall control unit detects a current position based on data from the GPS receiving unit, and determines a telephone position near the current position as the outdoor telephone position storage unit. From the map data storage unit, arrange the current position and the telephone position on the peripheral map, and output to be displayed on the wireless communication terminal. In-vehicle device characterized by The in-vehicle device according to claim 2,
The overall control unit outputs the vehicle communication device so that the wireless communication terminal also displays the current location based on the telephone number or text data of the emergency call destination. An antenna that transmits / receives radio waves to / from a base station, a wireless interface unit connected to the antenna, a voice interface including a speaker and a microphone, a display unit, and an overall control unit. In a wireless communication terminal that communicates between
A wireless communication terminal, wherein when the current location cannot communicate with the base station, the display unit displays map information created by the in-vehicle device. The wireless communication terminal according to claim 4,
A wireless communication terminal characterized in that the present location is also displayed on the display unit by a telephone number or text data of an emergency call destination.

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