JP7275395B2 - NAVIGATION DEVICE AND DESTINATION INPUT SUPPORT METHOD - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to a navigation device, and more particularly to a technique for assisting destination entry into a navigation device.

When setting a destination in the navigation device, the user needs to input information (hereinafter referred to as "destination information") for specifying the destination, such as the location (address) and name of the destination. In addition, the conventional navigation device cannot start route guidance until the user finishes inputting destination information that narrows down the destination to a single location. Therefore, for example, while the user (driver) is inputting the destination information into the navigation device while the vehicle is waiting for the signal, the traffic light turns green, and the user enters the destination information in order to drive the vehicle. If the input of is interrupted, route guidance will not start. In addition, the navigation device mounted on the vehicle is subject to operation restrictions that prohibit operation while the vehicle is running, so the user must stop the vehicle in order to resume inputting destination information.

For example, in Patent Documents 1 and 2 below, a temporary destination (for example, the location of a government office in an administrative division, an administrative A navigation device has been proposed that sets a boundary point of a section, etc., and provides route guidance to a temporary destination. The navigation devices of Patent Literatures 1 and 2 can provide route guidance to the vicinity of the destination even when the input of the destination information by the user is interrupted. Further, the navigation devices of Patent Documents 1 and 2 prompt the user to input detailed information about the destination in order to guide the route to the final destination when the vehicle approaches the temporary destination.

JP-A-7-98799 JP 2011-209027 A

2. Description of the Related Art In recent years, navigation devices having a voice recognition function have become popular. A navigation device having a voice recognition function allows a user to input destination information by voice without using hands, so the user does not need to stop inputting destination information even when driving a vehicle. However, when the destination information is input by voice, the user must utter a keyword that can be recognized by the navigation device, and the place names must be entered in the prescribed order (for example, prefecture → city → street address order). It is necessary to understand the characteristics and specifications of each navigation device, such as the need to speak with. Also, the voice input by the user may be erroneously recognized. Therefore, currently, when it comes to inputting destination information, manual input is superior to voice input in terms of ease and reliability. It can be said that there is no need to input the destination information by voice.

The present disclosure has been made to solve the above-described problems. To provide a navigation device that prompts voice input when the possibility of obtaining an opportunity to manually input information) becomes low.

The navigation device according to the present disclosure includes a destination information acquisition unit that acquires destination information, which is information for specifying the destination of the vehicle that is input by the user manually or by voice input, and an input of the destination information by the user. is completed, route guidance to the destination specified from the destination information is performed, and if the input of the destination information by the user is interrupted, the route is guided to the temporary destination determined based on the destination information during input. When the route from the position of the vehicle to the tentative destination satisfies a predetermined condition, the voice input device is controlled so that the remaining information of the destination information being input is input to the user. and a control unit that enables voice input, and the condition is that the number of traffic lights present on the route from the position of the vehicle to the tentative destination is less than a predetermined threshold.

The navigation device according to the present disclosure determines the possibility of obtaining an opportunity for manual input based on the characteristics of the route from the vehicle position to the tentative destination when the user's input of the destination information is interrupted. be able to. Therefore, the navigation device can prompt the voice input when the possibility of obtaining the opportunity to manually input the remaining information of the destination information in the middle of input becomes low.

Objects, features, aspects and advantages of the present disclosure will become more apparent with the following detailed description and accompanying drawings.

1 is a diagram showing a configuration of a navigation device according to Embodiment 1; FIG. 4 is a flow chart showing the operation of the navigation device according to Embodiment 1; 4 is a flow chart showing the operation of the navigation device according to Embodiment 1; 9 is a flow chart showing the operation of the navigation device according to Embodiment 2; 10 is a flow chart showing the operation of the navigation device according to Embodiment 3; 10 is a flow chart showing the operation of the navigation device according to Embodiment 4; 14 is a flow chart showing a modification of the operation of the navigation device according to Embodiment 4; 14 is a flow chart showing a modification of the operation of the navigation device according to Embodiment 4; 14 is a flow chart showing the operation of the navigation device according to Embodiment 5. FIG. 14 is a flow chart showing the operation of the navigation device according to Embodiment 5. FIG. 14 is a flow chart showing the operation of the navigation device according to Embodiment 6. FIG. 14 is a flow chart showing the operation of the navigation device according to Embodiment 7. FIG. FIG. 14 is a flow chart showing the operation of the navigation device according to Embodiment 8; FIG. FIG. 22 is a flow chart showing a modification of the operation of the navigation device according to Embodiment 8; FIG. FIG. 22 is a flow chart showing a modification of the operation of the navigation device according to Embodiment 8; FIG. 20 is a flow chart showing the operation of the navigation device according to Embodiment 9. FIG. It is a figure which shows the hardware structural example of a navigation apparatus. It is a figure which shows the hardware structural example of a navigation apparatus.

<Embodiment 1>
FIG. 1 is a diagram showing the configuration of a navigation device 10 according to Embodiment 1. As shown in FIG. In this embodiment, it is assumed that the navigation device 10 is mounted on a vehicle. However, the navigation device 10 does not have to be permanently installed in the vehicle, and may be a portable device that can be brought into the vehicle, a so-called PND (Portable Navigation Device). Also, the navigation device 10 may be implemented by application software executed by a mobile phone, a smart phone, or the like, for example. Also, some or all of the functions of the navigation device 10 may be installed outside the vehicle and built on a server capable of communicating with the vehicle. In the following description, the vehicle equipped with the navigation device 10 is referred to as "own vehicle".

A manual input device 21 , a voice input device 22 , a display device 23 , a voice output device 24 , a positioning device 25 , a map information storage device 26 and a communication device 27 are connected to the navigation device 10 . Some or all of these may be built in the navigation device 10 .

The manual input device 21 is means for a user (mainly the driver of the vehicle) to manually input information to the navigation device 10, and is composed of, for example, a keyboard or a touch panel. The voice input device 22 is means for the user to voice-input information to the navigation device 10, and includes a microphone that picks up the voice uttered by the user, a voice recognition device that converts the picked-up voice into a character string, and the like. I have. The user can input destination information to the navigation device 10 by manual input using the manual input device 21 or voice input using the voice input device 22 .

In the present embodiment, the manual input device 21 receives an output signal from a speed sensor 28 that detects the running speed of the vehicle, and the manual input device 21 performs an operation to prohibit an operation while the vehicle is running. It shall have a limiting function. In other words, the user cannot manually input the destination information while the vehicle is running. For example, if the vehicle starts while the user is manually inputting the destination information, the input is interrupted.

The display device 23 is means for the navigation device 10 to output information in the form of characters and images, and is composed of, for example, a liquid crystal display device or a HUD (Head-Up Display). The voice output device 24 is means for the navigation device 10 to output information by voice, and is composed of a speaker, a buzzer, and the like.

The positioning device 25 calculates the position of the vehicle based on positioning signals received from GNSS (Global Navigation Satellite System) satellites such as GPS (Global Positioning System) satellites. Further, the positioning device 25 may calculate the position of the own vehicle by autonomous navigation using the traveling speed and traveling direction of the own vehicle.

The map information storage device 26 is a storage medium that stores map information. In this embodiment, it is assumed that the map information stored in the map information storage device 26 includes position information of traffic lights installed on the road. The map information storage device 26 may be configured as a server installed outside the vehicle. In this case, there is an advantage that the navigation device 10 can acquire information on newly opened roads and newly installed traffic lights without the user having to update the map information.

The communication device 27 is means for the navigation device 10 to communicate with the outside. The navigation device 10 can use the communication device 27 to acquire traffic information such as congestion information and construction section information. The communication device 27 may be a communication device dedicated to the navigation device 10, or may be a general-purpose communication device such as a mobile phone or a smart phone.

As shown in FIG. 1 , the navigation device 10 includes a destination information acquisition section 11 , a route guidance section 12 and a control section 13 .

The destination information acquisition unit 11 acquires destination information input by the user from the manual input device 21 and the voice input device 22 . If the input is interrupted while the user is inputting the destination information, the destination information that is being input (that is, the information that the user has input before the input is interrupted) is retrieved by the destination information acquisition unit 11. to be obtained. Scenes in which the input of the destination information is interrupted include, for example, scenes in which the input is interrupted against the user's will, such as when the vehicle starts and the operation of the manual input device 21 is restricted. A scene in which the user voluntarily interrupts the input may also be included.

If the input of the destination information by the user is completed, the route guidance unit 12 identifies the destination from the destination information acquired by the destination information acquisition unit 11, and calculates the position of the own vehicle calculated by the positioning device 25. Based on the map information stored in the map information storage device 26, a route from the position of the own vehicle to the destination is set, and route guidance is provided to the user so that the own vehicle runs along the route. However, if the input of the destination information by the user is interrupted, the route guidance unit 12 determines the temporary destination based on the destination information that is being input, and plots a route from the position of the own vehicle to the temporary destination. route guidance from the position of the own vehicle to the temporary destination.

The method of route guidance performed by the route guidance unit 12 may be a known method. For example, the display device 23 displays a map indicating the position of the vehicle and the planned travel route, and the voice output device 24 outputs a voice indicating the direction in which the vehicle should proceed when the vehicle approaches a guidance point such as an intersection. A common method is to output from Further, when the route guidance unit 12 sets the route to the destination or the tentative destination, it is preferable that the route is selected taking into consideration the traffic information obtained using the communication device 27 .

Any method may be used to determine the temporary destination. For example, if the destination information in the middle of input is information on an administrative division such as a prefecture or municipality, the central point of the administrative division, the location of the government office of the administrative division, the border point of the administrative division, etc. It can be considered as a destination.

"Completion" of inputting the destination information means that information enough to narrow down the destination to one place (or an area large enough to be regarded as one place) has been input as the destination information. say. For example, if the destination is a facility with a unique name, the user only needs to input the facility name to complete the input of the destination information. However, if there are a plurality of facilities with the same name as the destination, the input of the destination information is not completed just by the user inputting the facility name. After the input of the destination information is interrupted, the user resumes the input and inputs the remaining information of the destination information that was being input (that is, the information that the user could not input before the input was interrupted). By doing so, the input of the destination information can be completed.

When the route guidance unit 12 is performing route guidance from the position of the vehicle to the temporary destination (that is, when the user stops inputting the destination information), the control unit 13 controls the The status of the route to the tentative destination is monitored, and when the route satisfies a predetermined condition, the voice input device 22 is controlled so that the user can transmit the rest of the destination information during input to the navigation device 10. The user is urged to input the destination information by voice by enabling voice input. In the present embodiment, the control unit 13 monitors the number of traffic lights present on the route from the position of the vehicle to the temporary destination based on the positions of the traffic lights included in the map information, and the number of traffic lights is determined in advance. When it becomes less than the set threshold value, the remaining information of the destination information in the middle of inputting can be input to the navigation device 10 by voice. At that time, the control unit 13 uses the voice output device 24 to notify the user to voice input the remaining information of the destination information that is being input.

The navigation device 10 can provide route guidance to the periphery of the destination by the route guidance unit 12 providing route guidance to the temporary destination even when the user stops inputting the destination information. However, in order to smoothly guide the own vehicle to the final destination, it is necessary for the user to input the remaining information of the destination information during input before the own vehicle arrives at the temporary destination. is preferably completed.

If there are many traffic lights on the route from the position of the vehicle to the temporary destination, there is a high possibility that the vehicle will stop at a red light before reaching the temporary destination. In that case, the user is likely to be able to manually input the destination information before the own vehicle arrives at the tentative destination by using the signal waiting time, and the necessity of inputting the destination information by voice is low. . However, as the vehicle approaches the tentative destination and the number of traffic lights on the route from the vehicle's position to the tentative destination decreases, the possibility decreases, so the user needs to input the destination information by voice. becomes higher.

The control unit 13 according to Embodiment 1 operates when the number of traffic lights on the route from the position of the host vehicle to the temporary destination becomes smaller than the threshold value and the possibility that the user will have an opportunity to perform manual input becomes low. to prompt the user for voice input. Therefore, according to the navigation device 10 according to Embodiment 1, while making the most of the advantages of manual input with high ease and reliability, the user is prompted to input the destination information by voice when necessary, and the destination information is displayed. By completing the input of information, the own vehicle can be smoothly guided to the final destination.

2 and 3 are flow charts showing the operation of the navigation device 10 according to the first embodiment. The operation of the navigation device 10 will be described below with reference to this flow chart.

After the navigation device 10 is activated, the destination information acquisition unit 11 acquires the destination information input by the user from the manual input device 21 and the voice input device 22 (step S101). The route guidance unit 12 determines whether or not the destination information acquired by the destination information acquisition unit 11 can be narrowed down to one location, thereby determining whether or not the input of the destination information by the user has been completed. (step S102).

If the input of the destination information by the user is completed (YES in step S102), the route guidance unit 12 starts route guidance to the destination specified from the destination information (step S103). Then, when the own vehicle reaches the destination (YES in step S104), the route guidance unit 12 ends the route guidance.

If the input of the destination information by the user has not been completed (NO in step S102), the destination information acquisition unit 11 confirms whether or not the input of the destination information by the user has been interrupted (step S105). If the user continues inputting the destination information (NO in step S105), the process returns to step S101.

When the input of the destination information by the user is interrupted (YES in step S105), the route guidance unit 12 determines whether or not the tentative destination can be determined from the destination information being input (step S106). For example, if the destination information being input is only information of one or two characters, and even a rough location of the destination cannot be identified, the tentative destination cannot be determined (NO in step S106). In that case, the navigation device 10 waits until the user inputs the remaining information of the destination information that is being input (step S107). After that, when the user inputs the remaining information of the destination information in the middle of input (YES in step S107), the process returns to step S101.

On the other hand, if the tentative destination can be determined from the destination information being input (YES in step S106), the process proceeds to the flow of FIG. S201). Then, the destination information acquisition unit 11 confirms whether or not the user has input the remaining information of the destination information that was being input (step S202). When the user inputs the remaining information of the destination information that is being input (YES in step S202), the process returns to step S101.

If the user has not input the rest of the destination information that is being input (NO in step S202), the control unit 13 confirms the number of traffic lights that exist on the route from the position of the host vehicle to the temporary destination. (step S203). If the number of traffic lights present on the route from the position of the host vehicle to the tentative destination is equal to or greater than the threshold (YES in step S203), the control unit 13 determines that there is a high possibility that the user can manually input the destination information. It judges and returns to step S202 without performing anything.

However, if the number of traffic lights existing on the route from the position of the host vehicle to the temporary destination is less than the threshold (NO in step S203), the control unit 13 may allow the user to manually input the destination information. It is determined that the level is low, and the voice input device 22 is activated so that the user can input the destination information by voice (step S204). Further, the control unit 13 uses the voice output device 24 to notify the user to voice-input the remaining information of the destination information that is being input (step S205). Then, when the user inputs the remaining information of the destination information that is being input (YES in step S206), the process returns to step S101.

In addition, in step S206, not only when the user inputs the remaining information of the destination information in the middle of input by voice, but also when the user manually inputs the information by, for example, stopping the own vehicle on the shoulder of the road, YES is selected. is judged.

As described above, in the navigation device 10 according to Embodiment 1, the number of traffic lights on the route from the position of the vehicle to the temporary destination becomes smaller than the threshold value, and the user can obtain an opportunity to manually input the signal. Prompt the user for voice input when the probability becomes low. Therefore, according to the navigation device 10 according to Embodiment 1, while making the most of the advantages of manual input with high ease and reliability, the user is prompted to input the destination information by voice when necessary, and the destination information is displayed. By completing the input of information, the own vehicle can be smoothly guided to the final destination.

<Embodiment 2>
The possibility that the user can manually input the destination information before the own vehicle arrives at the temporary destination, that is, the possibility that the own vehicle stops before the own vehicle arrives at the temporary destination is determined by the position of the own vehicle. It also depends on the route length to the temporary destination. This is because the longer the route, the more likely the vehicle will stop due to traffic jams, even if the number of traffic lights is small.

Therefore, in the second embodiment, the control unit 13 changes the threshold for the number of traffic lights according to the route length from the position of the host vehicle to the temporary destination. More specifically, the control unit 13 increases the threshold for the number of traffic lights as the route length from the position of the host vehicle to the temporary destination becomes shorter. The configuration of the navigation device 10 of Embodiment 2 is the same as that shown in FIG.

The control unit 13 does not need to continuously change the threshold for the number of traffic lights. Here, it is assumed that the control unit 13 switches the threshold for the number of traffic lights in two stages. That is, when the route length from the position of the host vehicle to the temporary destination is equal to or greater than a predetermined threshold, the control unit 13 sets the threshold for the number of traffic lights to the first threshold, and sets the route length to the predetermined threshold. If less than the threshold, the threshold for the number of traffic lights shall be set to a second threshold that is greater than the first threshold.

FIG. 4 is a flow chart showing the operation of the navigation device 10 according to the second embodiment. However, the flowchart of FIG. 4 corresponds to the flowchart of FIG. 3 shown in Embodiment 1, and shows part of the operation of the navigation device 10. That is, the operation of the navigation device 10 according to Embodiment 2 is represented by a flow chart combining FIGS. 2 and 4. FIG.

The flow of FIG. 4 is obtained by replacing step S203 of the flow of FIG. 3 with steps S211 to S213, and other steps are the same as in FIG. Therefore, steps S211 to S213 will be mainly described here, and descriptions of other steps will be omitted.

Step S211 is executed when it is determined in step S202 that the user has not input the remaining information of the destination information that was being input after the route guidance to the tentative destination was started in step S201 (NO in step S202). is determined). In step S211, the control unit 13 determines whether or not the route length from the position of the host vehicle to the temporary destination is equal to or greater than a predetermined threshold.

If the route length from the position of the host vehicle to the temporary destination is equal to or greater than the threshold (YES in step S211), the process proceeds from step S211 to step S212. At step S212, the control unit 13 checks whether or not the number of traffic lights present on the route is equal to or greater than the first threshold (step S212). If the number of traffic lights present on the route is equal to or greater than the first threshold (YES in step S212), the control unit 13 determines that there is a high possibility that the user can manually input the destination information, and does nothing. Then, the process returns to step S202. If the number of traffic lights present on the route from the position of the host vehicle to the tentative destination is less than the first threshold (NO in step S212), the control unit 13 may allow the user to manually input the destination information. It is determined that it is low, and the process advances to step S204 to enable the user to input the destination information by voice.

On the other hand, if the route length from the position of the own vehicle to the temporary destination is less than the threshold (NO in step S211), the process proceeds from step S211 to step S213. In step S213, the control unit 13 checks whether or not the number of traffic lights present on the route is equal to or greater than a second threshold that is larger than the first threshold (step S213). If the number of traffic lights present on the route is equal to or greater than the second threshold (YES in step S213), the control unit 13 determines that there is a high possibility that the user can manually input the destination information, and does nothing. Then, the process returns to step S202. If the number of traffic lights present on the route from the position of the host vehicle to the tentative destination is less than the second threshold (NO in step S213), the control unit 13 may allow the user to manually input the destination information. It is determined that it is low, and the process advances to step S204 to enable the user to input the destination information by voice.

According to the navigation device 10 according to the second embodiment, the route length from the position of the own vehicle to the tentative destination is taken into consideration when determining whether or not there is a high possibility that the user can manually input the destination information. This allows for more realistic decisions to be made.

<Embodiment 3>
As described above, the possibility of the own vehicle stopping before reaching the temporary destination depends on the length of the route from the position of the own vehicle to the temporary destination. Even if the number is small, there is a high possibility that the vehicle will stop due to traffic congestion or the like.

Therefore, in Embodiment 3, when the route guidance unit 12 is performing route guidance from the position of the own vehicle to the temporary destination (that is, when the input of the destination information by the user is interrupted) ), the route length from the position of the own vehicle to the temporary destination is monitored, and when the route length becomes less than a predetermined threshold value, the remaining information of the destination information being input is voiced to the navigation device 10 by the user. make it ready for input. The configuration of the navigation device 10 of Embodiment 3 is the same as that shown in FIG.

FIG. 5 is a flow chart showing the operation of the navigation device 10 according to the third embodiment. However, the flowchart of FIG. 5 corresponds to the flowchart of FIG. 3 shown in Embodiment 1, and shows a part of the operation of the navigation device 10. That is, the operation of the navigation device 10 according to the third embodiment is represented by a flow chart combining FIGS. 2 and 5. FIG.

The flow of FIG. 5 is obtained by replacing step S203 of the flow of FIG. 3 with step S221, and other steps are the same as in FIG. Therefore, here, step S221 will be mainly described, and description of other steps will be omitted.

In step S221, after the route guidance to the tentative destination is started in step S201, when it is determined in step S202 that the user has not input the remaining information of the destination information that is being input (NO in step S202). is determined). In step S221, the control unit 13 determines whether or not the route length from the position of the host vehicle to the temporary destination is equal to or greater than a predetermined threshold.

If the route length from the position of the own vehicle to the tentative destination is equal to or greater than the threshold value (YES in step S221), the control unit 13 determines that there is a high possibility that the user can manually input the destination information, and does nothing. without returning to step S202. If the route length from the position of the host vehicle to the tentative destination is less than the threshold (NO in step S221), the control unit 13 determines that the user is unlikely to be able to manually input the destination information, and proceeds to step S204. Proceed to enable the user to voice in destination information.

In the navigation device 10 according to the third embodiment, when the route length from the position of the host vehicle to the temporary destination becomes smaller than the threshold value and the possibility that the user will have an opportunity to perform manual input becomes low, the user to prompt for voice input. Therefore, according to the navigation device 10 according to the third embodiment, as in the first embodiment, it is possible to smoothly drive the vehicle to the final destination while maximizing the advantages of easy and highly reliable manual input. It is possible to obtain the effect that it can be induced to

<Embodiment 4>
As described above, one of the reasons why the vehicle is more likely to stop when the route length is long is that the vehicle is more likely to encounter traffic congestion when the route length is long.

Therefore, in the fourth embodiment, when the route guidance unit 12 is performing route guidance from the position of the host vehicle to the temporary destination (that is, when the input of the destination information by the user is interrupted) ), based on the traffic information acquired using the communication device 27, it is monitored whether or not there is a congested section on the route from the position of the own vehicle to the temporary destination, and when the congested section does not exist, , the user can input the remaining information of the destination information in the middle of input to the navigation device 10 by voice. The configuration of the navigation device 10 of Embodiment 4 is the same as that shown in FIG.

However, even if the own vehicle enters a congested section, if the vehicle is moving slowly, the user cannot perform manual input due to operation restrictions of the voice input device 22 . Therefore, it is preferable that the congested section for which the control unit 13 determines whether there is a traffic jam is a congested section in which the flow of vehicles is completely stopped. Therefore, based on the vehicle speed information included in the traffic congestion information, the control unit 13 may determine whether or not there is a congested section in which the average speed of vehicles in the congested section is equal to or lower than a certain value.

FIG. 6 is a flow chart showing the operation of the navigation device 10 according to the fourth embodiment. However, the flowchart of FIG. 6 corresponds to the flowchart of FIG. 3 shown in Embodiment 1, and shows part of the operation of the navigation device 10. That is, the operation of the navigation device 10 according to Embodiment 4 is represented by a flow chart combining FIGS. 2 and 6. FIG.

The flow of FIG. 6 is obtained by replacing step S203 of the flow of FIG. 3 with step S231, and other steps are the same as in FIG. Therefore, here, step S231 will be mainly described, and description of other steps will be omitted.

In step S231, after the route guidance to the tentative destination is started in step S201, when it is determined in step S202 that the user has not input the remaining information of the destination information that is being input (NO in step S202). is determined). In step S231, the control unit 13 determines whether or not there is a congested section on the route from the position of the vehicle to the temporary destination.

If there is a congested section on the route from the position of the vehicle to the temporary destination (YES in step S231), the control unit 13 determines that there is a high possibility that the user can manually input the destination information. Return to step S202 without performing. If there is no congested section on the route from the position of the vehicle to the temporary destination (NO in step S231), the control unit 13 determines that it is unlikely that the user will be able to manually input the destination information. The process advances to S204 to enable the user to input destination information by voice.

The navigation device 10 according to Embodiment 4 is designed to operate when there is no longer a traffic jam section on the route from the position of the vehicle to the tentative destination, and the possibility that the user will have an opportunity to perform manual input becomes low. Prompt the user for voice input. Therefore, according to the navigation device 10 according to the fourth embodiment, as in the first embodiment, it is possible to smoothly drive the vehicle to the final destination while maximizing the advantages of easy and reliable manual input. It is possible to obtain the effect that it can be induced to

However, in reality, it is conceivable that there is no congested section from the beginning on the route from the position of the own vehicle to the temporary destination. In such a case, in the flow of FIG. 6, the speech input device 22 will be activated immediately after the user interrupts the input of the destination information, and the effect of maximizing the advantage of manual input cannot be obtained. A problem arises. Therefore, the fourth embodiment may be combined with the first to third embodiments.

For example, FIG. 7 is a flow chart showing the operation of the navigation device 10 when the first embodiment and the fourth embodiment are combined. The flow of FIG. 7 is obtained by inserting the above-described step S231 before step S203 of the flow of FIG. In the flow of FIG. 7, even if there is no congested section on the route from the position of the vehicle to the temporary destination (NO in step S231), if the number of traffic lights on the route is equal to or greater than the threshold, If so (YES in step S203), the control unit 13 determines that there is a high possibility that the user can manually input the destination information, and returns to step S202 without performing anything. This prevents the above problem from occurring.

FIG. 8 is a flow chart showing the operation of the navigation device 10 when the third embodiment and the fourth embodiment are combined. The flow of FIG. 8 is obtained by inserting the above-described step S231 before step S211 of the flow of FIG. In the flow of FIG. 8, even if there is no congested section on the route from the position of the host vehicle to the temporary destination (NO in step S231), if the route length is equal to or greater than the threshold (YES in step S211). ), the control unit 13 determines that there is a high possibility that the user can manually input the destination information, and returns to step S202 without performing anything. This prevents the above problem from occurring.

<Embodiment 5>
The navigation devices 10 according to Embodiments 1 to 4 prompt the user to complete the input of the destination information before the own vehicle arrives at the tentative destination. However, when a plurality of route candidates are set by the route guidance unit 12 as routes from the position of the vehicle to the tentative destination, the user's goal may be determined before the vehicle reaches a branch point of the plurality of route candidates. It is preferable that the entry of the location information is completed and the final destination is specified.

In particular, when there are route candidates that include toll roads and route candidates that do not include toll roads among the plurality of route candidates, before the vehicle arrives at the branch point of the two route candidates, the user It is highly necessary that the input of the destination information by is completed. If the vehicle enters a candidate route that includes a toll road, there is generally no traffic light on the toll road, so the possibility of the vehicle stopping at a red light before reaching the tentative destination is reduced. , the possibility that the user will have an opportunity to perform manual input drops sharply.

Therefore, in Embodiment 5, a branch point between a route candidate including a toll road and a route candidate not including a toll road is defined as a "specific branch point". to the tentative destination (that is, when the input of the destination information by the user is interrupted), monitor the status of the route from the position of the own vehicle to a specific junction, and satisfies a predetermined condition, the voice input device 22 is controlled to allow the user to input the remaining information of the destination information in the middle of input into the navigation device 10 by voice. prompt for voice input. In the present embodiment, the control unit 13 monitors the number of traffic lights existing on the route from the position of the vehicle to the specific branch point based on the positions of the traffic lights included in the map information, and the number of traffic lights is determined in advance. When it becomes less than the set threshold value, the remaining information of the destination information in the middle of inputting can be input to the navigation device 10 by voice. At that time, the control unit 13 uses the voice output device 24 to notify the user to voice input the remaining information of the destination information that is being input. The configuration of the navigation device 10 of Embodiment 5 is the same as that shown in FIG.

9 and 10 are flow charts showing the operation of the navigation device 10 according to the fifth embodiment. The operation of the navigation device 10 will be described below with reference to this flow chart. Note that steps S101 to S107 in the flow chart of FIG. 9 are the same as those shown in FIG. Further, when proceeding to "B" in the flowchart of FIG. 9, any of the flows of FIGS. 3 to 8 may be executed.

After the navigation device 10 is activated, the destination information acquisition unit 11 acquires the destination information input by the user from the manual input device 21 and the voice input device 22 (step S101). The route guidance unit 12 determines whether or not the destination information acquired by the destination information acquisition unit 11 can be narrowed down to one location, thereby determining whether or not the input of the destination information by the user has been completed. (step S102).

If the input of the destination information by the user is completed (YES in step S102), the route guidance unit 12 starts route guidance to the destination specified from the destination information (step S103). Then, when the own vehicle reaches the destination (YES in step S104), the route guidance unit 12 ends the route guidance.

If the input of the destination information by the user has not been completed (NO in step S102), the destination information acquisition unit 11 confirms whether or not the input of the destination information by the user has been interrupted (step S105). If the user continues inputting the destination information (NO in step S105), the process returns to step S101.

When the input of the destination information by the user is interrupted (YES in step S105), the route guidance unit 12 determines whether or not the tentative destination can be determined from the destination information being input (step S106). For example, if the destination information being input is only information of one or two characters, and even a rough location of the destination cannot be identified, the tentative destination cannot be determined (NO in step S106). In that case, the navigation device 10 waits until the user inputs the remaining information of the destination information that is being input (step S107). After that, when the user inputs the remaining information of the destination information in the middle of input (YES in step S107), the process returns to step S101.

On the other hand, if the tentative destination can be determined from the destination information being input (YES in step S106), the route guide unit 12 sets a route from the position of the vehicle to the tentative destination. At this time, if a plurality of route candidates are set as the route from the position of the vehicle to the temporary destination (YES in step S111), the control unit 13 selects the route candidates including the toll road and the toll road. It is checked whether or not there is a route candidate not included (step S112). If there are route candidates that include toll roads and route candidates that do not include toll roads (YES in step S112), the control unit 13 branches the route candidates that include toll roads and the route candidates that do not include toll roads. A point is determined as a specific branch point (step S113), and the process proceeds to the flow of FIG.

Note that if only one route candidate is set as the route from the position of the vehicle to the temporary destination (NO in step S111), or if a route candidate including a toll road among the plurality of route candidates and a toll road If there is no route candidate that is not included (NO in step S112), one of the flows shown in FIGS. 3 to 8 is executed.

In the flow of FIG. 10, the route guidance unit 12 starts route guidance to the temporary destination (step S301). Then, the destination information acquisition unit 11 confirms whether or not the user has input the remaining information of the destination information in the middle of input (step S302). When the user inputs the remaining information of the destination information in the middle of input (YES in step S302), the process returns to step S101.

If the user has not input the rest of the destination information that is being input (NO in step S302), the control unit 13 confirms the number of traffic lights that exist on the route from the position of the own vehicle to the specific branch point. (step S303). If the number of traffic lights existing on the route from the position of the own vehicle to the specific branch point is equal to or greater than the threshold value (YES in step S303), the control unit 13 determines that there is a high possibility that the user can manually input the destination information. It judges and returns to step S302 without performing anything.

However, if the number of traffic lights existing on the route from the position of the own vehicle to the specific branch point is less than the threshold (NO in step S303), the control unit 13 may allow the user to manually input the destination information. It judges that it is low, activates the voice input device 22, and makes it possible for the user to input the destination information by voice (step S304). Further, the control unit 13 uses the voice output device 24 to notify the user to voice-input the remaining information of the destination information that is being input (step S305). Then, when the user inputs the remaining information of the destination information in the middle of input (YES in step S306), the process returns to step S101.

In addition, in step S306, not only when the user inputs the remaining information of the destination information in the middle of input by voice, but also when the user manually inputs the information by, for example, stopping the own vehicle on the shoulder of the road, YES is selected. is judged.

As described above, in the navigation device 10 according to Embodiment 5, the number of traffic lights on the route from the position of the own vehicle to the specific junction becomes smaller than the threshold, and the user reaches the specific junction by the time Prompt the user for voice input when the chance of manual input becomes low. Therefore, according to the navigation device 10 of Embodiment 5, it is possible to smoothly guide the host vehicle to the final destination while maximizing the advantages of manual input with high ease and reliability.

<Embodiment 6>
The possibility that the user can manually input the destination information before the own vehicle arrives at the specific junction, that is, the possibility that the own vehicle will stop before the own vehicle arrives at the specific junction depends on the position of the own vehicle. It also depends on the path length to a particular branch point. This is because the longer the route, the more likely the vehicle will stop due to traffic jams, even if the number of traffic lights is small.

Therefore, in Embodiment 6, the control unit 13 changes the threshold for the number of traffic lights according to the route length from the position of the host vehicle to the specific branch point. More specifically, the control unit 13 increases the threshold for the number of traffic lights as the route length from the position of the host vehicle to the specific branch point becomes shorter. The configuration of the navigation device 10 of Embodiment 6 is the same as that shown in FIG.

The control unit 13 does not need to continuously change the threshold for the number of traffic lights. Here, it is assumed that the control unit 13 switches the threshold for the number of traffic lights in two stages. That is, when the route length from the position of the host vehicle to the specific branch point is equal to or greater than a predetermined threshold, the control unit 13 sets the threshold for the number of traffic lights to the first threshold, and sets the route length to the predetermined threshold. If less than the threshold, the threshold for the number of traffic lights shall be set to a second threshold that is greater than the first threshold.

FIG. 11 is a flow chart showing the operation of the navigation device 10 according to the sixth embodiment. However, the flowchart of FIG. 11 corresponds to the flowchart of FIG. 10 shown in Embodiment 5, and shows a part of the operation of the navigation device 10. That is, the operation of the navigation device 10 according to the sixth embodiment is represented by a flow chart combining FIGS. 9 and 11. FIG.

The flow of FIG. 11 is obtained by replacing step S303 of the flow of FIG. 10 with steps S311 to S313, and other steps are the same as in FIG. Therefore, steps S311 to S313 will be mainly described here, and description of other steps will be omitted.

In step S311, when it is determined in step S302 that the user has not input the remaining information of the destination information that is being input after the route guidance to the temporary destination is started in step S301 (NO in step S302). is determined). In step S311, the control unit 13 determines whether or not the route length from the position of the host vehicle to the specific branch point is equal to or greater than a predetermined threshold.

If the route length from the position of the host vehicle to the specific branch point is equal to or greater than the threshold (YES in step S311), the process proceeds from step S311 to step S312. At step S312, the control unit 13 checks whether or not the number of traffic lights present on the route is equal to or greater than the first threshold (step S312). If the number of traffic lights present on the route is equal to or greater than the first threshold (YES in step S312), the control unit 13 determines that there is a high possibility that the user can manually input the destination information, and does nothing. Then, the process returns to step S302. If the number of traffic lights existing on the route from the position of the host vehicle to the specific branch point is less than the first threshold (NO in step S312), the control unit 13 may allow the user to manually input the destination information. It is determined that it is low, and the process advances to step S304 to enable the user to input the destination information by voice.

On the other hand, if the route length from the position of the host vehicle to the specific branch point is less than the threshold (NO in step S311), the process proceeds from step S311 to step S313. In step S313, the control unit 13 checks whether or not the number of traffic lights present on the route is equal to or greater than a second threshold, which is larger than the first threshold (step S313). If the number of traffic lights present on the route is equal to or greater than the second threshold (YES in step S313), the control unit 13 determines that there is a high possibility that the user can manually input the destination information, and does nothing. Then, the process returns to step S302. If the number of traffic lights existing on the route from the position of the host vehicle to the specific branch point is less than the second threshold (NO in step S313), the control unit 13 may allow the user to manually input the destination information. It is determined that it is low, and the process advances to step S304 to enable the user to input the destination information by voice.

According to the navigation device 10 according to Embodiment 6, the route length from the position of the own vehicle to the specific branch point is taken into consideration when determining whether or not there is a high possibility that the user can manually input the destination information. This allows for more realistic decisions to be made.

<Embodiment 7>
As described above, the possibility of the own vehicle stopping before reaching a specific branch point also depends on the route length from the position of the own vehicle to the specific branch point. Even if the number is small, there is a high possibility that the vehicle will stop due to traffic congestion or the like.

Therefore, in Embodiment 7, when the route guidance unit 12 is performing route guidance from the position of the own vehicle to the temporary destination (that is, when the input of the destination information by the user is interrupted) ), the route length from the position of the own vehicle to a specific branch point is monitored, and when the route length becomes less than a predetermined threshold value, the user outputs the remaining information of the destination information being input to the navigation device 10 by voice. make it ready for input. The configuration of the navigation device 10 of Embodiment 7 is the same as that shown in FIG.

FIG. 12 is a flow chart showing the operation of the navigation device 10 according to the seventh embodiment. However, the flowchart of FIG. 12 corresponds to the flowchart of FIG. 10 shown in Embodiment 5, and shows a part of the operation of the navigation device 10. That is, the operation of the navigation device 10 according to Embodiment 7 is represented by a flow chart combining FIGS. 9 and 12. FIG.

The flow of FIG. 12 replaces step S303 of the flow of FIG. 10 with step S321, and other steps are the same as in FIG. Therefore, step S321 will be mainly described here, and descriptions of other steps will be omitted.

In step S321, after the route guidance to the tentative destination is started in step S301, when it is determined in step S302 that the user has not input the remaining information of the destination information in the middle of input (NO in step S302). is determined). In step S321, the control unit 13 determines whether or not the route length from the position of the host vehicle to the specific branch point is equal to or greater than a predetermined threshold.

If the route length from the position of the own vehicle to the specific branch point is equal to or greater than the threshold value (YES in step S321), the control unit 13 determines that there is a high possibility that the user can manually input the destination information, and does nothing. without returning to step S302. If the route length from the position of the host vehicle to the specific branch point is less than the threshold value (NO in step S321), the control unit 13 determines that the user is unlikely to be able to manually input the destination information, and proceeds to step S304. Proceed to enable the user to voice in destination information.

In the navigation device 10 according to Embodiment 7, when the route length from the position of the host vehicle to the specific branch point becomes smaller than the threshold value and the possibility that the user will have an opportunity to perform manual input becomes low, the user to prompt for voice input. Therefore, according to the navigation device 10 according to the seventh embodiment, as in the fifth embodiment, it is possible to smoothly drive the vehicle to the final destination while maximizing the advantages of easy and reliable manual input. It is possible to obtain the effect that it can be induced to

<Embodiment 8>
As described above, one of the reasons why the vehicle is more likely to stop when the route length is long is that the vehicle is more likely to encounter traffic congestion when the route length is long.

Therefore, in the eighth embodiment, when the route guidance unit 12 is performing route guidance from the position of the own vehicle to the temporary destination (that is, when the input of the destination information by the user is interrupted) ), based on the traffic information acquired using the communication device 27, it is monitored whether or not there is a congested section on the route from the position of the own vehicle to the specific branch point, and when the congested section does not exist, , the user can input the remaining information of the destination information in the middle of input to the navigation device 10 by voice. The configuration of the navigation device 10 of Embodiment 8 is the same as that shown in FIG.

FIG. 13 is a flow chart showing the operation of the navigation device 10 according to the eighth embodiment. However, the flowchart of FIG. 13 corresponds to the flowchart of FIG. 10 shown in Embodiment 5, and shows a part of the operation of the navigation device 10. That is, the operation of the navigation device 10 according to the eighth embodiment is represented by a flow chart combining FIGS. 9 and 13. FIG.

The flow of FIG. 13 replaces step S303 of the flow of FIG. 10 with step S331, and other steps are the same as in FIG. Therefore, here, step S331 will be mainly described, and description of other steps will be omitted.

In step S331, after the route guidance to the tentative destination is started in step S301, when it is determined in step S302 that the user has not input the remaining information of the destination information in the middle of input (NO in step S302). is determined). In step S331, the control unit 13 determines whether or not there is a congested section on the route from the position of the host vehicle to the specific branch point.

If there is a congested section on the route from the position of the host vehicle to the specific branch point (YES in step S331), the control unit 13 determines that there is a high possibility that the user can manually input the destination information, and nothing is done. Return to step S302 without performing. If there is no congested section on the route from the position of the host vehicle to the specific branch point (NO in step S331), the control unit 13 determines that it is unlikely that the user will be able to manually input the destination information. The process advances to S304 to enable the user to input destination information by voice.

The navigation device 10 according to the eighth embodiment, when there is no longer a congested section on the route from the position of the own vehicle to the specific branch point, and the possibility that the user has an opportunity to perform manual input becomes low, Prompt the user for voice input. Therefore, according to the navigation device 10 according to the eighth embodiment, as in the fifth embodiment, the user can smoothly drive the vehicle to the final destination while maximizing the advantages of manual input with high ease and reliability. It is possible to obtain the effect that it can be induced to

However, in reality, it is conceivable that there is no congested section from the beginning on the route from the position of the own vehicle to the specific branch point. In such a case, in the flow of FIG. 13, the speech input device 22 is activated immediately after the user interrupts the input of the destination information, and the effect of maximizing the advantage of manual input cannot be obtained. A problem arises. Therefore, the eighth embodiment may be combined with the fifth to seventh embodiments.

For example, FIG. 14 is a flow chart showing the operation of the navigation device 10 when the fifth embodiment and the eighth embodiment are combined. The flow of FIG. 14 is obtained by inserting the above-described step S331 before step S303 of the flow of FIG. In the flow of FIG. 14, even if there is no congested section on the route from the position of the vehicle to the specific branch point (NO in step S331), if the number of traffic lights on the route is equal to or greater than the threshold, If so (YES in step S303), the control unit 13 determines that there is a high possibility that the user can manually input the destination information, and returns to step S302 without performing anything. This prevents the above problem from occurring.

FIG. 15 is a flow chart showing the operation of the navigation device 10 when the seventh embodiment and the eighth embodiment are combined. The flow of FIG. 15 is obtained by inserting the above-described step S331 before step S311 of the flow of FIG. In the flow of FIG. 15, even if there is no congested section on the route from the position of the host vehicle to the specific branch point (NO in step S331), if the route length is equal to or greater than the threshold (YES in step S311). ), the control unit 13 determines that there is a high possibility that the user can manually input the destination information, and returns to step S302 without performing anything. This prevents the above problem from occurring.

<Embodiment 9>
When there are two route candidates with a large difference in route length among the plurality of route candidates set by the route guidance unit 12, before the vehicle arrives at the branch point of the two route candidates, the user It is highly necessary that the input of the destination information by is completed. Depending on which of the two candidate routes the vehicle enters, there is a high possibility that the distance traveled to the final destination will change greatly, and in some cases, there is a risk that it will take a long detour to reach the final destination. because there is

Therefore, in the ninth embodiment, a branch point of two route candidates having a difference in route length of a certain value or more is defined as a "specific branch point". When the route guidance to the destination is being performed (that is, when the input of the destination information by the user is interrupted), the state of the route from the position of the own vehicle to the specific branch point is monitored, and the route is determined in advance. When a predetermined condition is satisfied, the voice input device 22 is controlled to enable the user to input the remaining information of the destination information in the middle of input into the navigation device 10 by voice. Prompt for input. The configuration of the navigation device 10 of the ninth embodiment is the same as that shown in FIG. Also, the operation of the navigation device 10 of the ninth embodiment is basically the same as that of the fifth to eighth embodiments, except that the definition of "specific branch point" is different.

FIG. 16 is a flow chart showing the operation of the navigation device 10 according to the ninth embodiment. The flow of FIG. 16 replaces steps S111 to S113 of the flow of FIG. 9 with steps S121 to S123. Therefore, steps S121 to S123 will be mainly described here, and descriptions of other steps will be omitted.

When the input of the destination information by the user is interrupted and the tentative destination can be determined from the destination information being input in step S106 (when it is determined YES in step S106), the route guidance unit 12 Set a route from a position to a temporary destination. At this time, if a plurality of route candidates are set as the route from the position of the host vehicle to the temporary destination (YES in step S121), the control unit 13 determines whether the difference in route length is equal to or greater than a predetermined value. It is checked whether or not one route candidate exists (step S122). Then, if there are two route candidates whose difference in route length is equal to or greater than a predetermined value (YES in step S122), the control unit 13 specifies branch points of the two route candidates whose difference in route length is equal to or greater than a predetermined value. It is defined as a point (step S123). After that, one of the flows shown in FIGS. 10 to 15 is executed.

Note that if only one route candidate is set as the route from the position of the vehicle to the temporary destination (NO in step S121), or if the difference in route length among the plurality of route candidates is equal to or greater than a certain value. If one route candidate does not exist (NO in step S122), one of the flows shown in FIGS. 3 to 8 is executed.

In the navigation device 10 according to the ninth embodiment, the number of traffic lights on the route from the position of the own vehicle to the specific branch point becomes smaller than the threshold, and the user does not have the opportunity to perform manual input until the specific branch point is reached. Prompt the user for voice input when the probability of obtaining it becomes low. Therefore, according to the navigation device 10 according to the ninth embodiment, it is possible to smoothly guide the host vehicle to the final destination while maximizing the advantages of manual input with high ease and reliability.

<Hardware configuration example>
17 and 18 are diagrams showing examples of the hardware configuration of the navigation device 10, respectively. Each function of the components of the navigation device 10 shown in FIG. 1 is implemented by, for example, a processing circuit 50 shown in FIG. That is, the navigation device 10 acquires the destination information, which is the information for specifying the destination of the vehicle, input manually or by voice input by the user. Route guidance is provided to the temporary destination determined based on the intermediate destination information, and when the route from the vehicle position to the temporary destination satisfies the predetermined conditions, the voice input device is controlled and input is made. A processing circuit for enabling the user to input the remaining information of the intermediate destination information by voice, and performing route guidance to the destination specified from the destination information when the input of the destination information by the user is completed. 50. The processing circuit 50 may be dedicated hardware, or a processor (central processing unit (CPU: Central Processing Unit), processing device, arithmetic device, microprocessor, microcomputer, etc.) that executes a program stored in a memory. Also called a DSP (Digital Signal Processor)).

When the processing circuit 50 is dedicated hardware, the processing circuit 50 may be, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a combination of these. Each function of the components of the navigation device 10 may be realized by individual processing circuits, or those functions may be collectively realized by one processing circuit.

FIG. 18 shows an example of the hardware configuration of the navigation device 10 when the processing circuit 50 is configured using a processor 51 that executes programs. In this case, the functions of the components of the navigation device 10 are implemented by software or the like (software, firmware, or a combination of software and firmware). Software or the like is written as a program and stored in the memory 52 . The processor 51 implements the function of each part by reading and executing the program stored in the memory 52 . That is, when the navigation device 10 is executed by the processor 51, the navigation device 10 acquires the destination information, which is the information for specifying the destination of the vehicle input manually or by voice input by the user, When the input of the destination information is interrupted, a process of performing route guidance to the tentative destination determined based on the destination information in the middle of the input and a route from the position of the vehicle to the tentative destination under the predetermined conditions is satisfied, the voice input device is controlled to enable the user to voice input the remaining information of the destination information that is being input, and when the input of the destination information by the user is completed, from the destination information A memory 52 is provided for storing a program that results in the execution of processing for route guidance to a specified destination. In other words, the program can be said to cause the computer to execute the procedures and methods of operation of the components of the navigation device 10 .

Here, the memory 52 is, for example, a non-volatile or Volatile semiconductor memory, HDD (Hard Disk Drive), magnetic disk, flexible disk, optical disk, compact disk, mini disk, DVD (Digital Versatile Disc) and its drive device, etc., or any storage medium that will be used in the future. may

The configuration in which the functions of the components of the navigation device 10 are realized by either hardware or software has been described above. However, the configuration is not limited to this, and may be a configuration in which a part of the components of the navigation device 10 are realized by dedicated hardware and another part of the components are realized by software or the like. For example, the functions of some of the components are realized by the processing circuit 50 as dedicated hardware, and the processing circuit 50 as a processor 51 executes the programs stored in the memory 52 for some of the other components. Its function can be realized by reading and executing it.

As described above, the navigation device 10 can implement each of the functions described above using hardware, software, etc., or a combination thereof.

In addition, it is possible to combine each embodiment freely, and to modify|transform and abbreviate|omit each embodiment suitably.

It is to be understood that the above description is illustrative in all aspects and that countless variations not illustrated can be envisaged.

10 navigation device 11 destination information acquisition unit 12 route guide unit 13 control unit 21 manual input device 22 voice input device 23 display device 24 voice output device 25 positioning device 26 map information storage device 27 Communication device, 28 speed sensor, 50 processing circuit, 51 processor, 52 memory.

Claims (17)

a destination information acquisition unit that acquires destination information, which is information for specifying the destination of the vehicle input manually or by voice input by the user;
When the input of the destination information by the user is completed, route guidance to the destination specified from the destination information is performed; when the input of the destination information by the user is interrupted, a route guidance unit that provides route guidance to a temporary destination determined based on the destination information;
When the route from the position of the vehicle to the tentative destination satisfies a predetermined condition, the voice input device is controlled so that the user can voice input the remaining information of the destination information that is being input. a control unit for
with
The condition is that the number of traffic lights present on the route from the position of the vehicle to the temporary destination is less than a predetermined threshold.
navigation device. The control unit changes the threshold according to a route length from the position of the vehicle to the temporary destination.
Navigation device according to claim 1 . The control unit increases the threshold as the route length from the position of the vehicle to the temporary destination becomes shorter.
3. Navigation device according to claim 2 . a destination information acquisition unit that acquires destination information, which is information for specifying the destination of the vehicle input manually or by voice input by the user;
When the input of the destination information by the user is completed, route guidance to the destination specified from the destination information is performed; when the input of the destination information by the user is interrupted, a route guidance unit that provides route guidance to a temporary destination determined based on the destination information;
When the route from the position of the vehicle to the tentative destination satisfies a predetermined condition, the voice input device is controlled so that the user can voice input the remaining information of the destination information that is being input. a control unit for
with
The condition is that there is no congested section on the route from the position of the vehicle to the temporary destination,
navigation device. a destination information acquisition unit that acquires destination information, which is information for specifying the destination of the vehicle input manually or by voice input by the user;
When the input of the destination information by the user is completed, route guidance to the destination specified from the destination information is performed; when the input of the destination information by the user is interrupted, a route guidance unit that provides route guidance to a temporary destination determined based on the destination information;
When the route from the position of the vehicle to the tentative destination satisfies a predetermined condition, the voice input device is controlled so that the user can voice input the remaining information of the destination information that is being input. a control unit for
with
When a plurality of route candidates are set as routes from the position of the vehicle to the temporary destination by the route guidance unit, the control unit selects route candidates including toll roads from the position of the vehicle and route candidates not including toll roads. When a route to a branch point with a route candidate satisfies a predetermined condition, the remaining information of the destination information that is being input is made available for voice input by the user.
navigation device. The condition is that the number of traffic lights present on the route from the position of the vehicle to the branch point is less than a predetermined threshold.
A navigation device according to claim 5 . The control unit changes the threshold according to a route length from the position of the vehicle to the branch point.
A navigation device according to claim 6 . The control unit increases the threshold as the route length from the position of the vehicle to the branch point becomes shorter.
A navigation device according to claim 7 . The condition is that the path length from the position of the vehicle to the branch point is less than a predetermined threshold.
A navigation device according to claim 5 . The condition is that there is no congested section on the route from the position of the vehicle to the branch point.
A navigation device according to claim 5 . a destination information acquisition unit that acquires destination information, which is information for specifying the destination of the vehicle input manually or by voice input by the user;
When the input of the destination information by the user is completed, route guidance to the destination specified from the destination information is performed; when the input of the destination information by the user is interrupted, a route guidance unit that provides route guidance to a temporary destination determined based on the destination information;
When the route from the position of the vehicle to the tentative destination satisfies a predetermined condition, the voice input device is controlled so that the user can voice input the remaining information of the destination information that is being input. a control unit for
with
A plurality of route candidates are set by the route guidance unit as routes from the position of the vehicle to the temporary destination, and among the plurality of route candidates, there is a route candidate having a difference in route length equal to or greater than a predetermined value. In this case, the control unit sets a branch point of two route candidates having a difference in route length equal to or greater than the predetermined value as a specific branch point, and the route from the position of the vehicle to the specific branch point satisfies a predetermined condition. When satisfying
navigation device. The condition is that the number of traffic lights present on the route from the position of the vehicle to the branch point is less than a predetermined threshold.
Navigation device according to claim 11 . The control unit changes the threshold according to a route length from the position of the vehicle to the branch point.
13. Navigation device according to claim 12 . The control unit increases the threshold as the route length from the position of the vehicle to the branch point becomes shorter.
14. Navigation device according to claim 13 . The condition is that the path length from the position of the vehicle to the branch point is less than a predetermined threshold.
Navigation device according to claim 11 . The condition is that there is no congested section on the route from the position of the vehicle to the branch point.
Navigation device according to claim 11 . A destination information acquisition unit of a navigation device acquires destination information, which is information for specifying a destination of a vehicle input manually or by voice input by a user,
When the input of the destination information by the user is interrupted, the route guidance unit of the navigation device provides route guidance to a temporary destination determined based on the destination information being input,
When the route from the position of the vehicle to the tentative destination satisfies a predetermined condition, the control unit of the navigation device controls the voice input device to input the rest of the destination information being input. enabling the user to input voice;
When the input of the destination information by the user is completed, the route guidance unit performs route guidance to the destination specified from the destination information,
The condition is that the number of traffic lights present on the route from the position of the vehicle to the temporary destination is less than a predetermined threshold.
Destination input support method.

Images