JP6457321B2 - Navigation system and in-vehicle device - Google Patents

Description

  The present invention relates to a technique for performing route guidance in an in-vehicle device mounted on an automobile.

  As a technology for performing route guidance, in a navigation device mounted on an automobile, setting of a destination is received from a user, a route to a destination is searched using map data stored in advance in the navigation device, and map data A technique for displaying a navigation screen showing a route on a map represented by is known (for example, Patent Document 1).

  In addition, as a technology for performing route guidance, in a mobile device connected to the server device via mobile communication, the route data from the server device to the map data or the route data to the destination is obtained and the route is represented on the map. A technique for displaying a guidance screen is known (for example, Patent Document 2). Here, the mobile device obtains route data from the server device at a time when route guidance is started, and for the map data, only the map data around the current location is obtained along with the movement of the current location. Obtained sequentially from the server device.

  In addition, in an in-vehicle device mounted on an automobile, an image transferred from the mobile device connected to the in-vehicle device is displayed on the display device of the in-vehicle device, and the operation of the mobile device according to an operation received by the input device of the in-vehicle device There is also known a technique for controlling (for example, Patent Document 3).

JP 2008-139252 A JP 2005-134209 A JP 2013-119263 A

  When a mobile device that performs route guidance as described above is connected to an in-vehicle device mounted on a car and the route guidance screen of the mobile device is displayed, the mobile device communicates with the server device due to deterioration of the communication environment. If it becomes impossible, map data cannot be acquired from the server device, and only a route guidance screen showing only a route to a destination without a map can be displayed.

In this case, the driver cannot confirm the right or left turn point or the like according to the route on the map, and thus it is difficult to proceed along the route.
Therefore, the present invention relates to an in-vehicle device that obtains route data and map data from a server device and connects to a mobile device that generates a route guidance screen, and displays the route guidance screen generated by the mobile device. It is an object to support the progress along the driver's route during a period when the vehicle cannot be used.

  In order to achieve the above object, the present invention includes an in-vehicle device mounted on an automobile, a mobile device connectable to the in-vehicle device, and a navigation server that distributes map data to the mobile device via wireless communication. Provide a navigation system. Here, the in-vehicle device includes a voice output device that outputs voice, a display device, a storage device that stores map data, and a map that stores the current position of the vehicle on the map that is stored in the storage device. A navigation unit that generates the navigation screen shown, an output control unit, and a display switching unit are provided. Further, the mobile device is connected to the navigation server via the wireless communication, acquires map data of a map around the current position of the mobile device from the navigation server, and on the map represented by the acquired map data, A navigation client unit that generates a route guidance screen representing a current position and a guide route set as a route to the destination, and generates a guidance voice that guides the progress according to the guide route by voice; When a mobile device is connected to the in-vehicle device, a state detection unit that detects whether the navigation client unit is connectable to the navigation server, and the mobile device is connected to the in-vehicle device. The route guidance screen generated by the navigation client unit and the guidance And an external transfer unit for transferring the voice to the vehicle device. The output control unit of the in-vehicle device displays the navigation screen generated by the navigation unit on the display device when the use of the navigation unit is set by the user, and is connected to the in-vehicle device from the user When the use of the navigation client unit of the mobile device is set, the route guidance screen transferred to the in-vehicle device by the external transfer unit of the mobile device is displayed on the display device, and the mobile The guidance voice transferred to the in-vehicle device by the external transfer unit of the device is output from the voice output device. Further, the display switching unit of the in-vehicle device is detected by the state detection unit of the mobile device when use of the navigation client unit of the mobile device connected to the in-vehicle device is set by a user. During the period in which the state detected by the state detection unit of the mobile device represents that the navigation client unit is not connectable to the navigation server, unconditionally, or predetermined When the condition is satisfied, instead of the route guidance screen transferred to the in-vehicle device by the external transfer unit of the mobile device, the navigation screen generated by the navigation unit is displayed on the display device. And displaying the guidance voice transferred to the in-vehicle device by the external transfer unit of the mobile device. Serial to be output from the audio output device.

  Here, in such a navigation system, the navigation client unit of the mobile device provides guidance voice that guides the progress according to the guidance route by voice only when the voice guidance with mode is set as the guidance mode by the user. The state detection unit of the mobile device also detects the state of the guidance mode of the navigation client unit of the mobile device, and the display switching unit of the in-vehicle device connects the user to the in-vehicle device from the user When the use of the navigation client unit of the mobile device is set, the state detected by the state detection unit of the mobile device is monitored, and the state detected by the state detection unit of the mobile device is The navigation client unit is connected to the navigation server. During a period indicating that it is not possible to continue, when a predetermined condition is satisfied, instead of the route guidance screen transferred to the in-vehicle device by the external transfer unit of the mobile device to the output control unit, The navigation screen generated by the navigation unit is displayed on the display device, and the guidance voice transferred to the in-vehicle device by the external transfer unit of the mobile device is output from the voice output device, The condition may be a condition that is satisfied when the state detected by the state detection unit of the mobile device represents that the voice guidance presence mode is set as the guidance mode.

  Alternatively, in the navigation system, when the use of the navigation client unit of the mobile device connected to the in-vehicle device is set by the user in the display switching unit, the state detection unit of the mobile device The state detected by the mobile device is monitored, and a predetermined condition is satisfied during a period in which the state detected by the state detection unit of the mobile device indicates that the navigation client unit is not connectable to the navigation server. In this case, the output control unit causes the display device to display the navigation screen generated by the navigation unit instead of the route guidance screen transferred to the in-vehicle device by the external transfer unit of the mobile device. Transferred to the in-vehicle device by the external transfer unit of the mobile device. Voice guidance causes output from the audio output device, the predetermined condition may be a condition that the guidance voice transfer to the vehicle device by the external transfer of the mobile device is satisfied in the event of.

  Here, in the above navigation system, in the display switching unit, the navigation unit generates the output control unit instead of the route guidance screen transferred to the in-vehicle device by the external transfer unit of the mobile device. After the navigation screen is displayed on the display device, if the state detected by the state detection unit of the mobile device changes to a state indicating that the navigation client unit can be connected to the navigation server, You may comprise so that the said output control part may return the display of the said display apparatus to the said route guidance screen transferred to the said vehicle equipment by the external transfer part of the mobile apparatus.

  In the above navigation system, the state indicating whether or not the navigation client unit can be connected to the navigation server may be set as the state whether or not the mobile device is capable of the wireless communication. However, the state where the mobile device is capable of the wireless communication represents that the navigation client unit is connectable to the navigation server, and the state where the mobile device is not capable of the wireless communication is that the navigation client unit is It represents that it is not possible to connect to the navigation server.

  Further, the above navigation system is mobile communication in which the wireless communication is performed via a mobile communication network, and the mobile device indicates the state indicating whether or not the navigation client unit can be connected to the navigation server. It is good also as a state of being located in the communication range of this, or being located out of a communication range. However, the state in which the mobile device is located within the communication area of the mobile communication network represents that the navigation client unit can be connected to the navigation server, and the mobile device is located outside the communication area of the mobile communication network. Represents that the navigation client unit is not connectable to the navigation server.

  In the navigation system described above, whether the navigation client unit is connectable to the navigation server is determined based on whether the navigation client unit of the mobile device is online or offline with the navigation server. It may be in the state. However, the state in which the navigation client unit of the mobile device is online with the navigation server indicates that the navigation client unit can be connected to the navigation server, and the navigation client unit of the mobile device is connected to the navigation server. The state of being online with the server represents that the navigation client unit is not connectable to the navigation server.

  According to the above navigation system, for example, when the route guidance screen generated by the navigation client unit of the mobile device is displayed on the display device of the in-vehicle device, the navigation client unit of the mobile device can no longer be used. Sometimes, the navigation screen generated by the navigation unit of the in-vehicle device is displayed on the display device of the in-vehicle device.

  Therefore, a route guidance screen that does not include a map that is generated because the navigation client unit of the mobile device cannot acquire map data from the navigation server is not displayed on the display device of the in-vehicle device.

  In addition, when the navigation client unit of the mobile device becomes unable to use the navigation server, the navigation screen generated by the navigation unit of the in-vehicle device displayed on the display device of the in-vehicle device represents the current position on the map. Therefore, the driver outputs the navigation client part of the mobile device for route guidance, which is continuously output even when the navigation client part of the mobile device becomes unavailable from the display of this navigation screen. The route change point indicated by the guidance voice to be confirmed can be confirmed on the map.

  Therefore, according to the present navigation system, when the navigation client unit of the mobile device becomes unable to use the navigation server, the driver can more reliably proceed according to the guidance route set in the navigation client unit of the mobile device. We can help you to do it easily.

  As described above, according to the present invention, in the in-vehicle device that displays the route guidance screen generated by the mobile device, connected to the mobile device that acquires the route data and the map data from the server device and generates the route guidance screen, It is possible to support progress along the driver's route during a period in which the mobile device cannot use the server device.

It is a block diagram which shows the structure of the navigation system which concerns on embodiment of this invention. It is a block diagram which shows the structure of the vehicle-mounted apparatus and mobile device which concern on embodiment of this invention. It is a figure which shows the example of a display of the vehicle-mounted apparatus and mobile device which concern on embodiment of this invention. It is a flowchart which shows the navigation switching control process which concerns on embodiment of this invention. It is a figure which shows the example of a display of the vehicle-mounted apparatus and mobile device which concern on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described.
FIG. 1 shows the configuration of the navigation system according to the first embodiment.
As shown in the figure, the navigation system according to the present embodiment includes an in-vehicle device 1 mounted on a car, an in-vehicle device 1 and local wireless communication such as Bluetooth (registered trademark) or Wi-Fi, or USB or HDMI (registered trademark). Mobile device 2 connected by wired communication such as a mobile device 2 and a navigation server 4 accessible by mobile device 2 via WAN 3 such as a mobile communication network or the Internet.

The mobile device 2 is a device that is carried by the user, such as the mobile device 2, a tablet, or a mobile phone.
Next, FIG. 2 shows configurations of the in-vehicle device 1 and the mobile device 2.
As shown in the figure, an in-vehicle device 1 includes an input device 101, a display device 102, a voice input / output device 103 having a microphone, a speaker, and the like, an external interface 104 that is an interface for wireless communication or wired communication, and an operating system for the in-vehicle device 105, an application running on the operating system 105, a storage device 106 storing map data, and other peripheral devices 107 such as a GPS receiver and sensors for detecting various states of the automobile.

  The in-vehicle device 1 includes the navigation switching control APP 111, the navigation APP 112, the external UI providing APP 113, and other applications as the above-described applications.

  However, the in-vehicle device 1 is configured by using a computer having a CPU, a memory, and the like in terms of hardware. The operating system 105, each application, and the like are stored in the computer by a predetermined computer program. It is realized by executing.

  Next, the mobile device 2 is an operating unit 201, a display 202, a voice input / output unit 203 including a microphone, a speaker, and the like, a communication interface 204 that is an interface of wireless communication or wired communication, and an operating system of the mobile device 2. Mobile operating system 205, a mobile application that is an application running on the mobile operating system 205, a wireless LAN interface 206 connected to the wireless LAN access point 6 (AP6), a mobile communication device 207 for accessing the mobile telephone network, Other peripheral devices 209 such as a storage unit 208 and a GPS receiver are provided.

  Here, the mobile device 2 includes a mobile phone APP211 that provides a mobile phone function using the mobile communication device 207, the voice input / output unit 203, and the operation unit 201, a navigation client APP212, and a status notification APP213 as mobile applications. ing.

  The mobile device 2 is configured using a computer having a CPU, a memory, and the like in hardware. The mobile operating system 205, each mobile application, and the like are stored in a predetermined computer program. This is realized by executing.

  In the configuration as described above, the mobile device 2 and the in-vehicle device 1 can be connected to each other via the external interface 104 and the communication interface 204, and the mobile operating system 205 and the operating system 105 are connected via the connection. The mobile application of the mobile device 2 and the application of the in-vehicle device 1 can communicate with each other using the above function.

Hereinafter, the operation of such a navigation system will be described.
The operating system 105 of the in-vehicle device 1 causes one application to operate in the foreground and another activated application to operate in the background in accordance with a user operation or the like. Further, the navigation APP 112 of the in-vehicle device 1 is always operating, and the operation state is switched between the foreground and the background according to the control of the operating system 105.

  Next, the navigation APP 112 of the in-vehicle device 1 calculates the current position of the vehicle using the GPS receiver and sensor provided in the in-vehicle device 1 as the peripheral device 107 and the map data stored in the storage device 106. In addition, the navigation APP 112 of the in-vehicle device 1 receives a destination setting from the user, searches for a route to the destination according to a predetermined search condition using the map data stored in the storage device 106, and serves as a guidance route. Set. Further, the navigation APP 112 of the in-vehicle device 1 is displayed when the navigation APP 112 is operating as a foreground application of the in-vehicle device 1, for example, a map represented by map data stored in the storage device 106 as shown in FIG. A navigation screen showing a current location mark indicating the current position and a set guidance route is generated and displayed on the display device 102. When no guidance route is set, no guidance route is included in the navigation screen.

  Next, the mobile operating system 205 of the mobile device 2 causes one mobile application to operate in the foreground and another active mobile application to operate in the background in accordance with a user operation or the like.

  In addition, the navigation client APP 212 of the mobile device 2 has a function of calculating the current position of the mobile device 2 using a GPS receiver or the like included in the mobile device 2 as the peripheral device 209 and a function of receiving a destination setting from the user. I have. Further, the navigation client APP 212 accesses the navigation server 4 on the WAN 3 via the mobile communication device 207 or the wireless LAN interface 206, and guide route data that is a route from the user to the destination, A process of acquiring map data from the navigation server 4 is performed.

  Here, when the navigation server 4 receives a guidance route request from the navigation client APP 212 via the WAN 3, the navigation server 4 searches for a route from the current position specified in the guidance route request to the destination, and guides the searched route data. The function of transmitting to the navigation client APP 212 as route data and the map data around the designated point requested by the map data request to the navigation client APP 212 when the map data request is received from the navigation client APP 212 via the WAN 3. It has a function to send.

  Then, the navigation client APP 212 of the mobile device 2 issues a guide route request specifying the current position and the destination to the navigation server 4 when obtaining the guide route data and receiving the destination setting from the user. Then, it obtains the guidance route data transmitted from the navigation server 4 as a response to the guidance route request.

  In addition, the navigation client APP 212 of the mobile device 2 acquires map data around the current position when the current position moves to a position near the location where the data of the surrounding map is not stored in the storage unit 208 of the mobile device 2. A map data request having the current position as a designated point is issued to the navigation server 4, the map data around the current position transmitted from the navigation server 4 as a response to the map data request is acquired, and the storage unit of the mobile device 2 This is done by storing in 208.

  The navigation client APP 212 of the mobile device 2 is not connected to the in-vehicle device 1 and the navigation client APP 212 is operating as the foreground APP of the mobile device 2, for example, as shown in FIG. The mobile device 2 generates a current location mark representing the current location and a route guidance screen representing the guidance route obtained from the navigation server 4 on the map around the current location obtained from the navigation server 4. Is displayed on the display 202.

  Further, the navigation client APP 212 of the mobile device 2 has a voice guidance mode and a voice guidance non-mode as the guidance mode. When the voice guidance mode is set as the guidance mode, the navigation client APP 212 receives data from the navigation server 4. Route guidance by voice of the acquired guidance route is performed. That is, when the mobile device 2 is not connected to the in-vehicle device 1 and the voice guidance presence mode is set as the guidance mode, the navigation client APP 212 of the mobile device 2 and the intersection to be turned right and left according to the guidance route Audio that guides the passing direction of the intersection is output from the audio input / output unit 203. For example, in the voice guidance, the navigation client APP 212 inputs a voice such as “150 m ahead, right direction, then 200 m ahead, left direction” when the current position approaches 150 m before the intersection to turn right according to the guidance route. When the output from the output unit 203 or the arrival of an intersection that should be turned left according to the guidance route after a few seconds is expected from the current position and its speed, a guidance voice such as “Left direction, then 200 m ahead, left direction” Output from the voice input / output unit 203.

  Here, the mobile operating system 205 of the mobile device 2 has an external input / output mode as an operation mode that can be set when the mobile device 2 is connected to the in-vehicle device 1. When the external input / output mode is set from 1, the operation of each mobile application of the mobile device 2 is controlled according to the control from the in-vehicle device 1, and the screen and sound output by each mobile application are displayed on the display 202 and the sound. A process of transferring to the in-vehicle device 1 without performing output to the input / output unit 203 is performed.

  Next, the external UI provision APP 113 of the in-vehicle device 1 uses the display device 102, the input device 101, and the voice input / output device 103 of the in-vehicle device 1 to provide an application that provides a user interface (UI) of the connected mobile device 2. It is.

  Then, when the external UI providing APP 113 of the in-vehicle device 1 starts the operation as the foreground application of the in-vehicle device 1, the mobile device 2 connected to the in-vehicle device 1 is set to the external input / output mode. In addition, when the external UI providing APP 113 is operating as a foreground application and the user is instructed to provide the user interface of the navigation client APP 212 of the mobile device 2, the navigation client APP 212 of the mobile device 2 is mobile. If not executed by the device 2, the navigation client APP 212 is activated in the mobile operating system 205 of the mobile device 2, and the route guidance screen and voice guidance voice are transferred to the in-vehicle device 1 to the navigation client APP 212 of the mobile device 2. The transferred route guidance screen is displayed on the display device 102 of the in-vehicle device 1 as shown in FIG. 3c, the transferred voice is output from the voice input / output device 103, the in-vehicle device 1 Depending on the operation performed by using a force unit 101 performs processing for controlling the operation of the navigation client APP212 mobile device 2.

  Next, the state notification APP 213 of the mobile device 2 indicates various states of the mobile device 2 in response to a request from the navigation switching control APP 111 of the in-vehicle device 1 when the mobile device 2 is connected to the in-vehicle device 1. The process which transmits to navigation switching control APP111 of the vehicle-mounted apparatus 1 is performed. Here, the state notification APP 213 of the mobile device 2 indicates whether the mobile communication device 207 is in a state where the mobile communication device 207 is located within the communication range of mobile communication (whether mobile communication is possible). The state, whether the wireless LAN interface 206 is connected to the WAN 3 via the access point 6, whether the guidance mode of the navigation client APP 212 is set to the voice guidance present mode, the guidance route to the navigation client APP 212 The state of whether it is set or the like is transmitted to the navigation switching control APP 111.

  Hereinafter, navigation switching control processing performed by the navigation switching control APP 111 of the in-vehicle device 1 in the configuration of such a navigation system will be described. The navigation switching control APP 111 is an application that operates in the background while the mobile device 2 is connected to the in-vehicle device 1.

FIG. 4 shows the procedure of this navigation switching control process.
As shown in the figure, in this navigation switching control process, the navigation switching control APP 111 of the in-vehicle device 1 checks whether or not the in-vehicle device 1 is providing the UI of the navigation client APP 212 (step 402).

Here, the state in which the in-vehicle device 1 provides the UI of the navigation client APP 212 means that the external UI provision APP 113 operates in the foreground and the route guidance screen transferred from the navigation client APP 212 of the mobile device 2. On the display device 102, the output of the voice transferred from the navigation client APP 212 of the mobile device 2 to the voice input / output device 103, and the operation performed using the input device 101 of the in-vehicle device 1. In this state, the navigation client APP 212 of the device 2 is being controlled.

  If the in-vehicle device 1 is not in the state of providing the UI of the navigation client APP 212 of the mobile device 2 (step 402), it waits for the in-vehicle device 1 to be in the state of providing the UI of the navigation client APP 212.

  On the other hand, if the in-vehicle device 1 is in a state of providing the UI of the navigation client APP 212 of the mobile device 2 (step 402), various states of the mobile device 2 are acquired from the state notification APP 213 of the mobile device 2 (step 404). ).

  Then, from the state of the mobile device 2 acquired from the state notification APP 213 of the mobile device 2, it is determined whether the mobile device 2 is currently in a state where the navigation server 4 can be used (step 406). If there is, the process returns to step 402. Here, in step 406, the state of the mobile device 2 acquired from the state notification APP 213 of the mobile device 2 is not in a state where the mobile communication device 207 of the mobile device 2 is located within the communication range of mobile communication, and the mobile device 2. When the wireless LAN interface 206 is not connected to the WAN 3 via the access point 6, the mobile device 2 determines that the navigation server 4 is not available, and in other cases The mobile device 2 determines that the navigation server 4 is available.

  However, whether or not the mobile device 2 is currently in a state where the navigation server 4 can be used is determined by whether the mobile device 2 uses the navigation server 4 when the navigation client APP 212 of the mobile device 2 can connect to the navigation server 4. When it is determined that the mobile server 2 is in an available state and the mobile device 2 is not connected to the navigation server 4, the mobile device 2 may determine that the navigation server 4 is not available. However, in this case, the status notification APP 213 of the mobile device 2 is in the online / offline status of the connection with the navigation server 4 of the navigation client APP 212 in the status of the mobile device 2 transmitted to the navigation switching control APP 111 of the in-vehicle device 1. To include. In the navigation switching control APP 111 of the in-vehicle device 1, the state where the mobile device 2 can use the navigation server 4 when the state acquired from the state notification APP 213 of the mobile device 2 indicates the online state of the navigation client APP 212. It is determined that the mobile device 2 is not in a state where the navigation server 4 can be used when the navigation client APP 212 indicates the offline state.

  On the other hand, if it is determined in step 406 that the mobile device 2 is not currently in a state where the navigation server 4 can be used, the state of the mobile device 2 acquired from the state notification APP 213 of the mobile device 2 is It is checked whether or not the guide route is set in the navigation client APP 212 of the device 2 (step 408), and if it is not set, the processing returns to step 402.

  On the other hand, when the state of the mobile device 2 acquired from the state notification APP 213 of the mobile device 2 indicates that a guide route is currently set in the navigation client APP 212 of the mobile device 2 (step 408), the mobile device 2 It is checked whether the state of the mobile device 2 acquired from the state notification APP 213 of the device 2 indicates that the guidance mode of the navigation client APP 212 of the mobile device 2 is currently set to the voice guidance present mode (step 410). If the guidance mode does not indicate that the voice guidance mode is set, the process returns to step 402.

  On the other hand, when the state of the mobile device 2 acquired from the state notification APP 213 of the mobile device 2 indicates that the guidance mode of the navigation client APP 212 of the mobile device 2 is currently set to the voice guidance present mode ( In step 410, the external UI providing APP 113 is controlled so that the screen displayed on the display device 102 of the in-vehicle device 1 is switched to the navigation screen generated by the navigation APP 112 of the in-vehicle device 1 (step 412). The external UI providing APP 113 switches only the display of the display device 102 of the in-vehicle device 1 to the navigation screen generated by the navigation APP 112 in accordance with the control in step 412, and is transferred from the navigation client APP 212 of the mobile device 2. Other states such as the output of the voice to the voice input / output device 103 are maintained as they are.

  When the display on the display device 102 of the in-vehicle device 1 is switched to the display of the navigation screen generated by the navigation APP 112 of the in-vehicle device 1, the scale of the map on the navigation screen is changed to that of the surrounding road network prior to the switching. The navigation APP 112 may be controlled so that the scale is changed to a predetermined scale that is clearly shown. Prior to the switching, when a guidance route is set in the navigation APP 112, it is preferable to control the navigation APP 112 to delete the guidance route.

  Then, until it is determined that the mobile device 2 is in a state where the navigation server 4 can be used (step 416), acquisition of various states of the mobile device 2 from the state notification APP 213 of the mobile device 2 (step 414). ) And determination of whether the mobile device 2 is in a state where the navigation server 4 can be used (step 416) from the acquired state of the mobile device 2 is repeated, and the mobile device 2 can use the navigation server 4 If it is determined that it is in the state (step 416), the external UI provision APP 113 is set so that the screen displayed on the display device 102 of the in-vehicle device 1 is returned to the route guidance screen transferred from the navigation client APP 212 of the mobile device 2. Control (step 418) and return to the processing from step 402

  Here, the external UI provision APP 113 returns the screen displayed on the display device 102 of the in-vehicle device 1 to the route guidance screen transferred from the navigation client APP 212 of the mobile device 2 according to the control in step 418.

The navigation switching control process performed by the navigation switching control APP 111 of the in-vehicle device 1 has been described above.
According to the navigation switching control process as described above, for example, the route guidance transferred from the navigation client APP 212 of the mobile device 2 connected to the in-vehicle device 1 to the display device 102 of the in-vehicle device 1 as shown in FIG. When the mobile device 2 cannot use the navigation server 4 while displaying the screen, the display on the display device 102 of the in-vehicle device 1 is generated by the navigation APP 112 of the in-vehicle device 1 as shown in FIG. The navigation screen is displayed.

  Therefore, the navigation client APP 212 of the mobile device 2 cannot obtain the map data from the navigation server 4 and thus the route guidance screen not including the map as shown in FIG. It is never displayed on the display device 102.

  Further, the navigation screen as shown in FIG. 5b generated by the navigation APP 112 of the in-vehicle device 1 that is displayed when the mobile device 2 cannot use the navigation server 4 includes a map around the current location and the current location. Therefore, the driver displays the route guidance of the navigation client APP 212 of the mobile device 2 that is continuously output even when the mobile device 2 cannot use the navigation server 4 from the display of the navigation screen. The route change point indicated by the voice (such as an intersection that turns right or left) can be confirmed on the map.

  Therefore, according to the present embodiment, when the mobile device 2 becomes unable to use the navigation server 4, the driver can make progress according to the guidance route set in the navigation client APP 212 of the mobile device 2 more reliably or We can help you to do it easily.

The embodiment of the present invention has been described above.
By the way, in the above embodiment, when the mobile device 2 cannot use the navigation server 4 while the route guidance screen transferred from the navigation client APP 212 of the mobile device 2 connected to the in-vehicle device 1 is displayed. When the navigation route is set to the navigation client APP 212 and the guidance mode of the navigation client APP is set to the voice guidance presence mode, until the mobile device 2 can use the navigation server 4, Instead of the route guidance screen transferred from the navigation client APP 212 of the mobile device 2, the navigation screen generated by the navigation APP 112 of the in-vehicle device 1 is displayed on the display device 102 of the in-vehicle device 1. In-vehicle equipment 1, only during a period in which a voice such as “150 m ahead, right direction, then 200 m ahead, left direction” transferred from the navigation client APP 212 of the mobile device 2 is output from the voice input / output unit 203, or In the in-vehicle device 1, the navigation client of the mobile device 2 is displayed on the display device 102 of the in-vehicle device 1 only for a certain period after the output from the voice input / output unit 203 of the voice transferred from the navigation client APP 212 of the mobile device 2 starts. Instead of the route guidance screen transferred from the APP 212, a navigation screen generated by the navigation APP 112 of the in-vehicle device 1 may be displayed. Here, the output period from the voice input / output unit 203 of the voice transferred from the navigation client APP 212 of the mobile device 2 in the in-vehicle device 1 is calculated by monitoring the voice transferred from the navigation client APP 212 of the mobile device 2. . Alternatively, the voice notification start / end of the route guidance of the navigation client APP 212 is monitored in the status notification APP 213 of the mobile device 2, and if the voice output start is detected, the voice output start / end is sent to the navigation switching control APP 111. Notification may be made and the output period from the voice input / output unit 203 of the voice transferred from the navigation client APP 212 of the mobile device 2 may be calculated from the notification in the navigation switching control APP 111.

  DESCRIPTION OF SYMBOLS 1 ... In-vehicle device, 2 ... Mobile device, 3 ... WAN, 4 ... Navigation server, 6 ... Access point, 101 ... Input device, 102 ... Display device, 103 ... Voice input / output device, 104 ... External interface, 105 ... Operating system DESCRIPTION OF SYMBOLS 106 ... Memory | storage device 107 ... Peripheral device 111 ... Navigation switching control APP, 112 ... Navigation APP, 113 ... External UI provision APP, 201 ... Operation part, 202 ... Display, 203 ... Voice input / output part, 204 ... Communication interface 205 ... Mobile operating system, 206 ... Wireless LAN interface, 207 ... Mobile communication device, 208 ... Storage unit, 209 ... Peripheral device, 211 ... Mobile phone APP, 212 ... Navigation client APP, 213 ... Status notification APP.

Claims (14)

A navigation system comprising an in-vehicle device mounted in an automobile, a mobile device connectable to the in-vehicle device, and a navigation server that distributes map data to the mobile device via wireless communication,
The in-vehicle device is
An audio output device for outputting audio;
A display device;
A storage device storing map data;
A navigation unit that generates a navigation screen representing a current position of the automobile on a map represented by map data stored in the storage device;
An output control unit;
A display switching unit,
The mobile device is
Connect to the navigation server via the wireless communication, acquire map data of a map around the current position of the mobile device from the navigation server, and on the map represented by the acquired map data, to the current position and the destination A navigation client unit that generates a route guidance screen that represents a guide route set as a route of the route, and that generates a guide voice that guides the progress according to the guide route by voice;
A state detection unit for detecting a state indicating whether or not the navigation client unit is connectable to the navigation server when the mobile device is connected to the in-vehicle device;
An external transfer unit that transfers the route guidance screen and the guidance voice generated by the navigation client unit to the in-vehicle device when the mobile device is connected to the in-vehicle device;
The output control unit of the in-vehicle device is
When the use of the navigation unit is set by the user, the navigation screen generated by the navigation unit is displayed on the display device,
When the use of the navigation client unit of the mobile device connected to the in-vehicle device is set by the user, the route guidance screen transferred to the in-vehicle device by the external transfer unit of the mobile device is displayed. And displaying the guidance voice transferred to the in-vehicle device by the external transfer unit of the mobile device from the voice output device,
The display switching unit of the in-vehicle device is detected by the state detection unit of the mobile device when use of the navigation client unit of the mobile device connected to the in-vehicle device is set by a user. The state is monitored, and the state detected by the state detection unit of the mobile device indicates that the navigation client unit is not connectable to the navigation server. When satisfied, the navigation device generated by the navigation unit is displayed on the display device instead of the route guidance screen transferred to the in-vehicle device by the external transfer unit of the mobile device. And the guidance voice transferred to the in-vehicle device by the external transfer unit of the mobile device Navigation system, characterized in that to be output from the audio output device. The navigation system according to claim 1,
The navigation client unit of the mobile device generates a guidance voice that guides the progress according to the guidance route by voice only when the voice guidance with mode is set as the guidance mode from the user,
The state detection unit of the mobile device also detects the state of the guidance mode of the navigation client unit of the mobile device,
The display switching unit monitors a state detected by the state detection unit of the mobile device when use of the navigation client unit of the mobile device connected to the in-vehicle device is set by a user. The output control unit when a predetermined condition is satisfied during a period in which the state detected by the state detection unit of the mobile device represents that the navigation client unit is not connectable to the navigation server. In addition to displaying the navigation screen generated by the navigation unit on the display device instead of the route guidance screen transferred to the in-vehicle device by the external transfer unit of the mobile device, and by the external transfer unit of the mobile device The guidance voice transferred to the in-vehicle device is output from the voice output device,
The predetermined condition is a condition that is satisfied when the state detected by the state detection unit of the mobile device indicates that the voice guidance presence mode is set as the guidance mode. A featured navigation system. The navigation system according to claim 1,
The display switching unit monitors a state detected by the state detection unit of the mobile device when use of the navigation client unit of the mobile device connected to the in-vehicle device is set by a user. The output control unit when a predetermined condition is satisfied during a period in which the state detected by the state detection unit of the mobile device represents that the navigation client unit is not connectable to the navigation server. In addition to displaying the navigation screen generated by the navigation unit on the display device instead of the route guidance screen transferred to the in-vehicle device by the external transfer unit of the mobile device, and by the external transfer unit of the mobile device The guidance voice transferred to the in-vehicle device is output from the voice output device,
The navigation system according to claim 1, wherein the predetermined condition is a condition that is satisfied when a guidance voice is transferred to the in-vehicle device by an external transfer unit of the mobile device. The navigation system according to claim 1, 2, or 3,
The display switching unit causes the output control unit to display the navigation screen generated by the navigation unit on the display device instead of the route guidance screen transferred to the in-vehicle device by the external transfer unit of the mobile device. After that, if the state detected by the state detection unit of the mobile device changes to a state indicating that the navigation client unit can be connected to the navigation server, the output control unit includes the display device. Is returned to the route guidance screen transferred to the in-vehicle device by the external transfer unit of the mobile device. The navigation system according to claim 1, 2, 3 or 4,
The state indicating whether or not the navigation client unit can connect to the navigation server is a state whether or not the mobile device can perform the wireless communication, and the mobile device can perform the wireless communication. The state represents that the navigation client unit is connectable to the navigation server, and the state in which the mobile device is not capable of wireless communication represents that the navigation client unit is not connectable to the navigation server. Navigation system. The navigation system according to claim 1, 2, 3 or 4,
The wireless communication is mobile communication performed via a mobile communication network,
The state indicating whether or not the navigation client unit can be connected to the navigation server is a state in which the mobile device is located in a communication area or outside a communication area of the mobile communication network. The state located within the communication area of the mobile communication network represents that the navigation client unit can be connected to the navigation server, and the state where the mobile device is located outside the communication area of the mobile communication network represents the navigation client unit Represents that it is not connectable to the navigation server. The navigation system according to claim 1, 2, 3 or 4,
The state indicating whether or not the navigation client unit can be connected to the navigation server is a state whether the navigation client unit of the mobile device is online or offline with the navigation server, and the mobile A state in which the navigation client unit of the device is online with the navigation server indicates that the navigation client unit is connectable to the navigation server, and the navigation client unit of the mobile device is online with the navigation server. The state in the state represents that the navigation client unit is not connectable to the navigation server. Connected to the navigation server via wireless communication, acquired map data of the map around the current position from the navigation server, and set as the current position and the route to the destination on the map represented by the acquired map data An in-car mounted on a car that can be connected to a mobile device that generates a route guidance screen that represents a guide route and that includes a navigation client unit that generates a guidance voice that guides the progress along the guide route by voice. A device,
An audio output device for outputting audio;
A display device;
A storage device storing map data;
A navigation unit that generates a navigation screen representing a current position of the automobile on a map represented by map data stored in the storage device;
An output control unit;
A display switching unit,
The output control unit
When the use of the navigation unit is set by the user, the navigation screen generated by the navigation unit is displayed on the display device,
When the use of the navigation client unit of the mobile device connected to the in-vehicle device is set by a user, the route guidance screen and the guidance voice are transferred to the mobile device, and the route guidance transferred is transferred. While displaying the screen on the display device, the transferred guidance voice is output from the voice output device,
Whether the display switching unit is connectable to the navigation server by the navigation client unit of the mobile device when use of the navigation client unit of the mobile device connected to the in-vehicle device is set by a user The state of the mobile device is monitored, and during the period when the navigation client unit of the mobile device is not connectable to the navigation server, the mobile device is unconditionally or when the predetermined condition is satisfied. The navigation screen generated by the navigation unit is displayed on the display device instead of the route guidance screen transferred from the mobile device to the vehicle-mounted device, and the guidance voice transferred from the mobile device is output from the voice output device. In-vehicle device characterized by the above. The in-vehicle device according to claim 8,
The navigation client unit of the mobile device generates a guidance voice that guides the progress according to the guidance route by voice only when the voice guidance with mode is set as the guidance mode from the user,
Whether the display switching unit is connectable to the navigation server by the navigation client unit of the mobile device when use of the navigation client unit of the mobile device connected to the in-vehicle device is set by a user The state of the mobile device is monitored and transferred to the output control unit from the mobile device to the in-vehicle device when a predetermined condition is satisfied during a period when the navigation client unit of the mobile device is not connectable to the navigation server. In place of the route guidance screen that has been made, the navigation screen generated by the navigation unit is displayed on the display device, and guidance voice transferred from the mobile device is output from the voice output device,
The vehicle-mounted device, wherein the predetermined condition is a condition that is satisfied when the voice guidance presence mode is set as a guidance mode of the navigation client unit of the mobile device. The in-vehicle device according to claim 8,
The navigation client unit of the mobile device generates a guidance voice that guides the progress according to the guidance route by voice only when the voice guidance with mode is set as the guidance mode from the user,
Whether the display switching unit is connectable to the navigation server by the navigation client unit of the mobile device when use of the navigation client unit of the mobile device connected to the in-vehicle device is set by a user The state of the mobile device is monitored and transferred to the output control unit from the mobile device to the in-vehicle device when a predetermined condition is satisfied during a period when the navigation client unit of the mobile device is not connectable to the navigation server. In place of the route guidance screen that has been made, the navigation screen generated by the navigation unit is displayed on the display device, and guidance voice transferred from the mobile device is output from the voice output device,
The in-vehicle device, wherein the predetermined condition is a condition that is satisfied when a guidance voice is transferred to the in-vehicle device by an external transfer unit of the mobile device. The in-vehicle device according to claim 1, 2, or 3,
The display switching unit causes the output control unit to display the navigation screen generated by the navigation unit on the display device instead of the route guidance screen transferred to the in-vehicle device by the external transfer unit of the mobile device. After that, if the navigation client unit of the mobile device becomes connectable to the navigation server, the display of the display device is transferred to the in-vehicle device by the external transfer unit of the mobile device to the output control unit A vehicle-mounted device that returns to the route guidance screen. The in-vehicle device according to claim 8, 9, 10 or 11,
The display switching unit identifies that the navigation client unit is connectable to the navigation server when the mobile device is in a state where the wireless communication is possible, and the mobile device is not capable of the wireless communication. And the navigation client unit identifies that the navigation client unit is not connectable to the navigation server. The in-vehicle device according to claim 8, 9, 10 or 11,
The wireless communication is mobile communication performed via a mobile communication network,
The display switching unit identifies that the navigation client unit is connectable to the navigation server when the mobile device is within a communication range of the mobile communication network, and the mobile device is out of a communication range of the mobile communication network. And the navigation client unit identifies that the navigation client unit is not connectable to the navigation server. The in-vehicle device according to claim 8, 9, 10 or 11,
The display switching unit identifies that the navigation client unit is connectable to the navigation server when the navigation client unit of the mobile device is online with the navigation server, and the navigation client unit An in-vehicle device that identifies that the navigation client unit is not connectable to the navigation server when in an offline state with a server.