WO2013051072A1

WO2013051072A1 - Navigation device, method and program

Info

Publication number: WO2013051072A1
Application number: PCT/JP2011/005659
Authority: WO
Inventors: 武弘重田; 友紀古本; 悠希住吉; 尚嘉竹裏; 渡邉　圭輔
Original assignee: 三菱電機株式会社
Priority date: 2011-10-07
Filing date: 2011-10-07
Publication date: 2013-04-11

Abstract

According to this navigation device, method, or program, guidance information that indicates guidance given by a fellow passenger to a driver is stored, and when it is detected that a vehicle is located near a position at which the guidance information is stored in the next traveling on the same route, the guidance corresponding to the position is appropriately outputted, thereby enabling a more flexible and user-friendly presentation that is the same as given by the fellow passenger to the driver.

Description

Navigation device, method and program

The present invention relates to a navigation apparatus, method, and program capable of recognizing a user's utterance content and performing navigation.

In general, a navigation device for in-vehicle use, for example, when a predetermined point (for example, an intersection whose traveling direction is to be changed) is approaching while traveling on a set route, a voice output or a graphic display is provided to the driver. Give guidance.
However, even if the navigation device can provide road guidance at a predetermined point set in advance, the content of the road guidance that the passenger is providing to the driver during driving is used as the guidance content of the navigation device. It was not possible to present it to the person.

To deal with such a problem, for example, in Patent Document 1, the navigation device stores guide information that the passenger has guided the driver, and the most frequently used guide utterance content among the accumulated guides is stored. A navigation device and a navigation method for selecting and presenting to a user are described.

JP 2010-190773 A

However, in the conventional navigation device as described above, since the content presented to the user is limited to “the most frequently spoken content among the content spoken in the past”, there are various ways of saying depending on the user. There was a problem that things could not be considered. In addition, the presentation method is limited to “sound output by synthesized speech” and “screen output to the display of the navigation device”, and there is a problem that information that can be presented to the user is limited. Furthermore, if the driving situation feature value satisfies the conditions, the same guide is output even if it is not the same as the position where the guide was recorded (or within a predetermined range), so a guide suitable for each road guidance point must be presented. There was also a problem that it was not possible.

The present invention has been made to solve the above-described problems, and can provide a more flexible and user-friendly presentation similar to the case where a passenger is guiding a driver. An object is to provide a navigation device, a method, and a program.

In order to achieve the above object, a navigation device of the present invention includes a voice acquisition unit that acquires input voice, a voice recognition unit that performs voice recognition processing from voice data acquired by the voice acquisition unit, and the voice acquisition A voice recording unit that records the voice data acquired by the unit into a voice file, a route guidance expression storage unit that stores a route guidance expression, and a result of recognition by the voice recognition unit with reference to the route guidance expression storage unit A route guidance expression extracting unit for extracting a route guidance expression, a travel route acquiring unit for acquiring a travel route, a host vehicle position acquiring unit for acquiring the position of the host vehicle, and a route guide extracted by the route guide expression extracting unit. The expression is acquired by the vehicle position acquisition unit when the voice file recorded by the voice recording unit, the travel route acquired by the travel route acquisition unit, and the voice acquisition unit acquires voice. When the vehicle travels on the same route as the route guidance information recorded in the route guidance information control storage unit, the route guidance information control storage unit records the route guidance information in association with the own vehicle position. A road guidance information presentation unit that outputs the road guidance information corresponding to the recorded vehicle position when it is detected that the position is within a predetermined range from the vehicle position recorded as the road guidance information; It is characterized by providing.

According to the navigation device of the present invention, the guide information that the passenger has guided the driver is stored, and the next time the vehicle travels on the same route, the vehicle position is near the position where the guide information is stored. When it is detected, a guide corresponding to the position is output accurately, so that flexible and user-friendly presentation can be performed.

1 is a block diagram illustrating an example of a navigation device according to Embodiment 1. FIG. It is a figure which shows an example of the route guidance expression memory | storage part. It is a figure which shows an example of the route guidance information table. 4 is a flowchart showing an operation when registering road guidance information according to the first embodiment. 5 is a flowchart showing an operation when using road guidance information according to the first embodiment. 4 is a presentation example of road guidance information in the first embodiment. FIG. 10 is a block diagram illustrating an example of a navigation device according to a second embodiment. 10 is a flowchart illustrating an operation when using road guidance information according to the second embodiment. FIG. 10 is a block diagram illustrating an example of a navigation device according to a third embodiment. It is a figure which shows another example of the route guidance information table. 12 is a flowchart illustrating an operation when using road guidance information according to the third embodiment. FIG. 10 is a block diagram illustrating an example of a navigation device according to a fourth embodiment. 10 is a flowchart illustrating an operation when using road guidance information according to the fourth embodiment. FIG. 10 is a block diagram illustrating an example of a navigation device according to a fifth embodiment. It is a figure which shows an example of the ambiguous expression table. 10 is a flowchart illustrating an operation when using road guidance information according to a fifth embodiment. FIG. 20 is a block diagram illustrating an example of a navigation device according to a sixth embodiment. It is a figure which shows an example of the route guidance expression conversion table. 18 is a flowchart showing an operation when using road guidance information according to the sixth embodiment. In Embodiment 6, it is an example of presentation of the guidance information in which the utterance content is converted into a graphic expression, or converted into a graphic expression and a character expression. FIG. 20 is a block diagram illustrating an example of a navigation device according to a seventh embodiment. 18 is a flowchart showing an operation at the time of registering road guidance information according to the seventh embodiment. 5 is a diagram illustrating an example of an unnecessary expression storage unit 19. FIG. 20 is a flowchart illustrating an operation when using road guidance information according to an eighth embodiment. In Embodiment 8, it is explanatory drawing which represented typically the method of calculating the longitude and latitude of the output position of an instruction | indication point.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a block diagram showing an example of a navigation apparatus according to Embodiment 1 of the present invention. This navigation device includes a voice acquisition unit 1, a voice recognition unit 2, a voice recording unit 3, a route guidance expression storage unit 4, a route guidance expression extraction unit 5, a map data storage unit 6, a time acquisition unit 7, The travel route acquisition unit 8, the vehicle position acquisition unit 9, the road guidance information control storage unit 10, the road guidance information table 11, the road guidance information presentation control unit 12, and the road guidance information output unit 13 are configured. ing. Although not shown, a key input unit that acquires an input signal using a key, a touch panel, or the like is also provided.

The voice acquisition unit 1 performs A / D conversion on a user utterance collected by a microphone or the like, that is, an input voice, and acquires the voice, for example, in a PCM (Pulse Code Modulation) format.
The voice recognition unit 2 has a recognition dictionary (not shown), detects a voice section corresponding to the content spoken by a speaker such as a passenger from the voice data acquired by the voice acquisition unit 1, and features And a speech recognition process is performed using a recognition dictionary based on the feature amount. Note that the voice recognition unit 2 may use a voice recognition server on the network.
The voice recording unit 3 records the voice data acquired by the voice acquisition unit 1 as a voice file such as a WAV file.

The route guidance expression storage unit 4 normally stores expressions that are assumed to be used when a person guides a route.
FIG. 2 is a diagram illustrating an example of the route guidance expression storage unit 4. As shown in the figure, the route guidance expression storage unit 4 indicates, for example, “immediately”, “after a while”, “next”, “100 m ahead”, “200 m ahead”, “300 m ahead” indicating the timing and place of the route guidance. "First", "Second", "Third" and "Intersection", "Three-way", "Signal", "Corner", "End", "Convenience store", "Bookstore", "Japanese restaurant", "Family", "Gasoline" “Stand”, “Hospital”, etc. Also, the expression of “Right”, “Right”, “Left”, “Left”, “Straight”, “Straight”, “East”, “West”, “South”, “North”, etc. I remember it.
The route guidance expression extraction unit 5 performs morphological analysis with reference to the route guidance expression storage unit 4 and extracts a route guidance expression from the character string of the speech recognition result of the speech recognition unit 2.

The map data storage unit 6 stores map data such as road data, intersection data, facility data, and the like.
The time acquisition unit 7 acquires time using known information.
The travel route acquisition unit 8 determines a travel route from the current location to the destination when the destination is set, and acquires the determined travel route by assigning an individual ID.
The own vehicle position acquisition unit 9 acquires the current own vehicle position (longitude and latitude) using information acquired from a GPS receiver, a gyroscope, or the like.

The route guidance information control storage unit 10 acquires the route guidance expression extracted by the route guidance expression extraction unit 5, the voice file recorded by the voice recording unit 3, the map data stored in the map data storage unit 6, and the time acquisition. The time acquired by the unit 7, the travel route acquired by the travel route acquisition unit 8, and the own vehicle position acquired by the own vehicle position acquisition unit 9 are associated with each other and stored in the road guidance information table 11. Further, the route guidance information control storage unit 10 obtains the position (longitude and latitude) of the instruction point based on the utterance content, the utterance position (the own vehicle position at the time of utterance), and the map data, and from the utterance position to the instruction point. Is also calculated, and the information is also stored in the route guidance information table 11.
FIG. 3 is a diagram illustrating an example of the route guidance information table 11. As shown in this figure, the route guidance information table 11 includes, for example, a travel route ID, an utterance content, a recorded voice file, an utterance time, an utterance position (longitude / latitude), an instruction point position (longitude / latitude), and an instruction point. The direction of travel and the distance to the indicated point are stored. Although not included in the road guide information table 11 shown in FIG. 3, for example, the ID of the road guide who performed the road guide may be recorded.

The route guidance information presentation control unit 12 edits and updates data recorded in the route guidance information table 11 and presents which guidance (recorded audio file) to the user at which position (at which timing). Control is performed such as instructing to the route guidance information output unit 13.
The route guidance information output unit 13 outputs the instructed route guidance information (guidance) at the position (timing) indicated by the route guidance information presentation control unit 12 by screen output to a display screen or voice output to a speaker. , Output to the user.
In addition, this road guidance information presentation control part 12 and the road guidance information output part 13 comprise the road guidance information presentation part 21 in this invention.

Next, in the navigation apparatus according to the first embodiment configured as described above, an operation at the time of road guidance information registration when road guidance is performed by a passenger will be described. FIG. 4 is a flowchart showing an operation at the time of registering route guidance information according to the first embodiment.
First, when the destination is set by the user, the own vehicle position acquisition unit 9 acquires the current own vehicle position (longitude and latitude), and the travel route acquisition unit 8 refers to the map data to determine the destination from the current location. A travel route to the ground is determined (step ST01). At this time, if the same travel route exists in the already registered route guidance information table 11 (YES in step ST02), the same travel route ID is assigned to the same travel route. (Step ST03). On the other hand, if the same travel route does not exist (NO in step ST02), a new travel route ID is assigned (step ST04).

Thereafter, when there is any utterance, the voice recognition unit 2 recognizes the voice acquired by the voice acquisition unit 1 and the voice recording unit 3 records it (step ST05). At this time, the time acquisition unit 7 acquires the time at that time (step ST06), and the own vehicle position acquisition unit 9 acquires the position (latitude and longitude) at that time (step ST07). Further, the route guidance expression extracting unit 5 extracts the route guidance expression with reference to the route guidance expression storage unit 4 from the voice recognition result recognized by the voice recognition unit 2 in step ST05 (step ST08).

As a result of the extraction, if no route guidance expression is included (in the case of NO in step ST09), the process returns to step ST05 and recording is started. On the other hand, if any route guidance expression is included (YES in step ST09), the voice recorded in step ST05 is stored as a voice file (step ST10). Next, the route guidance information control storage unit 10 refers to the map data and the vehicle position from the route guidance expression extracted in step ST08, and points indicated by the guide by the utterance (actually turning corner, actually passing through). (Hereinafter referred to as “instruction point”) (step ST11), the traveling direction at the instruction point is acquired (step ST12), and the distance between the vehicle position and the instruction point is calculated. (Step ST13).

Finally, various information acquired, stored, calculated, etc. up to step ST13, that is, speech content that has been voice-recognized, recorded voice file, own vehicle position, instruction point, direction of movement at the instruction point, up to the instruction point The distance, time, and travel route ID are combined (stored) in the route guidance information table 11 (step ST14).
Then, until the destination is reached or a vocabulary representing the end or interruption of the route guidance such as “arrival”, “end”, “interrupt”, “stop” is obtained (NO in step ST15), step ST05 The process of ST14 is repeated.

As for the driving route, the instruction point etc. is usually registered while getting the passenger to guide the route for the route that passes for the first time. In the case of the second time, by storing the same travel route ID in the road guide information table, the data for the travel route is more enriched, and a more detailed and easy-to-understand road guide information table can be created.

Next, an operation when presenting road guidance information will be described. FIG. 5 is a flowchart showing an operation when using the route guidance information according to the first embodiment.
First, when the destination is set by the user, the own vehicle position acquisition unit 9 acquires the current own vehicle position (longitude and latitude), and the travel route acquisition unit 8 refers to the map data to determine the destination from the current location. A travel route to the ground is determined (step ST21). Next, the road guide information presentation control unit 12 determines whether or not the same travel route as the determined travel route exists in the road guide information table 11. When there is no travel route that is the same as the determined route in the already stored route guidance information table 11 (in the case of NO in step ST22), there is no route guidance information that can be presented. Exit. On the other hand, when the same travel route as the determined travel route exists in the already stored route guidance information table 11 (in the case of YES in step ST22), the current vehicle position (latitude and longitude) is displayed. Obtain (step ST23).

Next, the vehicle position (longitude and latitude) at the time of utterance of the travel route is acquired from the road guidance information table 11 (step ST24). When the own vehicle position acquired in step ST23 is within a predetermined range from the own vehicle position acquired in step ST24 (in the case of YES in step ST25), the utterance content and the recorded voice are acquired from the route guidance information table 11. (Step ST26) and present it to the user (step ST27). At this time, the utterance content is presented by displaying character information, graphic information, etc. on the navigation screen, the windshield, etc., and the recorded voice is presented by outputting the recorded voice file as it is.
Step ST23 until arriving at the destination or obtaining a vocabulary representing the end or interruption of route guidance such as “arrival”, “end”, “interrupt”, “stop”, etc. (in the case of NO in step ST28) The process of ~ ST27 is repeated.

In step ST25, it is determined that the current vehicle position (latitude and longitude) is “within a predetermined range” from the vehicle position (latitude and longitude) at the time of speech. This is because the current longitude and latitude at the time of measurement of the current vehicle position at the time of making this determination are not always exactly the same as the longitude and latitude of the vehicle position stored in the table. If it is within, it is determined that it has almost reached the same position and the guidance is presented.

FIG. 6 is an example showing how the route guidance information is presented to the user in step ST27. On the navigation screen 31 on which the map is displayed, the utterance content of the route guidance information is displayed as character information (telop) 32, and the recorded voice file is output as voice. In FIG. 6, this voice output route guidance information is indicated by a balloon 33.

As described above, according to the first embodiment, the guide information that the passenger has guided the driver is stored, and the next time the vehicle travels on the same route, the vicinity of the position where the guide information is stored. When the vehicle position is detected, a guide corresponding to the position is output accurately, so that flexible and user-friendly presentation can be performed.

Embodiment 2. FIG.
FIG. 7 is a block diagram showing an example of a navigation apparatus according to Embodiment 2 of the present invention. In addition, the same code | symbol is attached | subjected to the structure similar to what was demonstrated in Embodiment 1, and the overlapping description is abbreviate | omitted. The second embodiment described below further includes a speech synthesizer 14 as compared with the first embodiment. When the “distance to the instruction point” stored in the road guidance information table 11 is short (for example, the distance to the instruction point is only 50 m as in data No. 3 of the road guidance information table 11 shown in FIG. 3). In the case), since it is difficult for the user to perceive the guidance and to perform the behavior according to the guidance, the position where the road guidance information is presented is the own vehicle position (latitude and longitude) stored in the road guidance information table 11. The output content is also changed accordingly.

FIG. 8 is a flowchart showing an operation when using the route guidance information according to the second embodiment.
First, when the destination is set by the user, the own vehicle position acquisition unit 9 acquires the current own vehicle position (longitude and latitude), and the travel route acquisition unit 8 refers to the map data to determine the destination from the current location. A travel route to the ground is determined (step ST21). Next, the road guide information presentation control unit 12 determines whether or not the same travel route as the determined travel route exists in the road guide information table 11. When there is no travel route that is the same as the determined route in the already stored route guidance information table 11 (in the case of NO in step ST22), there is no route guidance information that can be presented. Exit. On the other hand, when the same travel route as the determined travel route exists in the already-stored route guidance information table 11 (in the case of YES in step ST22), the “designated point” It is checked whether or not there is data having a “distance to” less than a predetermined value (in this second embodiment, less than 100 m) (step ST31). The determination condition “less than the predetermined value” is set to be less than 100 m here, but may be set as appropriate, such as 50 m or less and less than 50 m.

If there is no data with a short distance to the instruction point (NO in step ST31), the same processing as steps ST23 to ST27 in the flowchart shown in FIG. 5 of the first embodiment is performed.
On the other hand, if there is data with a short distance to the instruction point (YES in step ST31), the route guidance information presentation control unit 12 sets the distance to the instruction point of the data to a value equal to or greater than a predetermined value (here Then, the longitude and latitude corresponding to the distance are calculated, and each is overwritten and saved (step ST32). Note that the distance to be changed (a value equal to or greater than a predetermined value) is 100 m here, but a distance that is equal to or greater than a predetermined value, such as 200 m or 300 m, for example, may be appropriately set. .
In addition, in the second embodiment, the changed distance and longitude and latitude are overwritten and updated in the route guidance information table 11, but may be added as changed data.

Furthermore, when the distance to the instruction point is changed, the content of the utterance to be presented to the user is also changed, and a synthesized speech is created accordingly and overwritten and saved (step ST33). For example, the data No. of the route guidance information table 11 shown in FIG. In the case of 3, the speech content “here left” is changed to, for example, “100 m ahead” to “left” by changing the distance to the instruction point to 100 m, and the speech synthesizing unit 14 reads “here left”. Instead of the recorded voice file, a synthesized voice “100m ahead” is created (step ST34). As a method of synthesizing the voice, a known method may be used such as storing and creating a voice of a route guidance term that is likely to be used in advance.

Thereafter, the same processing as in steps ST23 to ST25 is performed. When step ST25 is YES, the utterance content is acquired from the route guidance information table 11, and the synthesized speech created in step ST34 is acquired (step ST35). It is presented to the user (step ST36).
Then, until arriving at the destination or obtaining a vocabulary indicating the end or interruption of the route guidance such as “arrival”, “end”, “interrupt”, “stop”, etc. (in the case of NO in step ST37), FIG. The process after step ST31 in the flowchart is repeated.

Further, although the utterance content is updated by overwriting the route guidance information table 11 in the second embodiment, it may be added as post-change data. Further, although the synthesized voice is not recorded in the route guidance information table 11 here, it is updated by overwriting the synthesized voice instead of the recorded voice, or added as changed data. May be.
In the second embodiment, the processes in steps ST31 to ST34 are performed when the road guide information is used (during travel). However, this process is not performed, and the process in FIG. 4 in the first embodiment is performed. It may be performed in advance when registering the route guidance information shown, and the data in the route guidance information table 11 may be updated.

As described above, according to the second embodiment, in the route guidance information table 11 stored at the time of registration, there is data with a short distance to the instruction point, and after the user perceives the guidance, Even if it is difficult to perform the behavior, it is possible to change the position and output contents for outputting the route guidance information to a position and contents suitable for the user to perceive the guidance and perform the behavior. As a result, more flexible and user-friendly presentation can be performed.

Embodiment 3 FIG.
FIG. 9 is a block diagram showing an example of a navigation apparatus according to Embodiment 3 of the present invention. In addition, the same code | symbol is attached | subjected to the structure similar to what was demonstrated in

Embodiment

1 or 2, and the overlapping description is abbreviate | omitted. In the third embodiment described below, when compared with the first embodiment, the vehicle speed acquisition unit 15 is further provided, and the current vehicle speed is too high compared to when the road guidance information is stored in the road guidance information table 11. For example, when it is considered that it is difficult for the user to perform the behavior according to the guidance even if the guidance information is presented at the position stored in the guidance information table 11, the guidance position in consideration of the vehicle speed Is to change.

FIG. 10 is a diagram showing another example of the road guidance information table 11 in which the vehicle speed is stored in addition to the road guidance information table 11 shown in FIG.
Regarding the operation at the time of registering the road guidance information in the third embodiment, the vehicle speed may be acquired at steps ST06 and ST07 in the flowchart of FIG. 4 in the first embodiment. Is omitted.

FIG. 11 is a flowchart showing an operation when using the route guidance information according to the third embodiment.
First, when the destination is set by the user, the own vehicle position acquisition unit 9 acquires the current own vehicle position (longitude and latitude), and the travel route acquisition unit 8 refers to the map data to determine the destination from the current location. A travel route to the ground is determined (step ST21). Next, the road guide information presentation control unit 12 determines whether or not the same travel route as the determined travel route exists in the road guide information table 11. When there is no travel route that is the same as the determined route in the already stored route guidance information table 11 (in the case of NO in step ST22), there is no route guidance information that can be presented. Exit. On the other hand, when the same travel route as the determined travel route exists in the already stored route guidance information table 11 (YES in step ST22), the current vehicle speed is acquired (step ST41). .

Next, the vehicle speed and the distance to the instruction point when the travel route is uttered are acquired from the road guidance information table 11 (step ST42). Then, based on the vehicle speed acquired from the road guidance information table 11 and the distance to the instruction point, the distance to the appropriate instruction point at the currently traveling vehicle speed is calculated, updated, and saved (overwritten) (step ST43). ). For example, even if the guidance is presented at the position stored in the road guidance information table 11 such as when the current vehicle speed is too high compared to the vehicle speed stored in the road guidance information table 11, When it seems difficult because there is not enough time to perform the behavior according to the guidance, even if it is running at the current vehicle speed, it can handle with a margin (for example, if it is running at a vehicle speed of 60 km / h, This is because the distance to the instruction point is reset to 400 m or the like, and is appropriately presented to the user.
It should be noted that the relationship between the vehicle speed and the distance for performing the resetting may be determined in advance and automatically reset by the navigation device.

Thereafter, processing similar to steps ST23 to ST27 in the flowchart shown in FIG. 5 of the first embodiment is performed.
Then, until arriving at the destination or obtaining a vocabulary representing the end or interruption of the route guidance such as “arrival”, “end”, “interrupt”, “stop”, etc. (in the case of NO in step ST44), FIG. The process after step ST41 in the flowchart is repeated.

In the third embodiment, the reset distance and position to the instruction point are updated by overwriting the route guidance information table 11, but may be added as post-change data. .
Here, the processing of steps ST41 to ST43 is performed when the road guidance information is used (during traveling). However, this processing is not during traveling, and the road guidance shown in FIG. 4 in the first embodiment is performed. It may be performed in advance at the time of information registration. In this case, it is only necessary to calculate the distance to the instruction point for several types of vehicle speeds that are different from the vehicle speed at the time of registration instead of the current vehicle speed.

In the third embodiment, the position where the route guidance information is presented has been changed. For example, the data No. stored in the route guidance information table 11 shown in FIG. When the current vehicle speed is 60 km / h (2 times the stored speed) when presenting 2, the content to be presented is changed according to the vehicle speed, such as “here straight”. May be. In this case, as in the second embodiment, the utterance content may be updated and a synthesized speech may be generated and output.

As described above, according to the third embodiment, the vehicle speed acquisition unit 15 is further provided, and the vehicle travels at a vehicle speed different from the road guide information table 11 stored at the time of registration. Therefore, even if it is difficult for the user to perceive the guidance after the perception of the guidance, the user perceives the guidance and the behavior of the position where the route guidance information is output. Since the position can be changed to a position suitable for performing the output, more flexible and user-friendly presentation can be performed.

Embodiment 4 FIG.
FIG. 12 is a block diagram showing an example of a navigation device according to Embodiment 4 of the present invention. Note that the same components as those described in the first to third embodiments are denoted by the same reference numerals, and redundant description is omitted. In the fourth embodiment described below, compared to the first embodiment, the surrounding situation acquisition unit 16 is further provided, and the present day is night compared to the case where the road guidance information is stored in the road guidance information table 11. Even if the information stored in the route guidance information table 11 is presented, such as when it is difficult to recognize the building as a landmark because it is dark and difficult to see, or because it is currently under construction, it is difficult for the user to understand Therefore, the contents to be guided are changed in consideration of at least the time or the surrounding situation.

FIG. 13 is a flowchart showing an operation when using the route guidance information according to the fourth embodiment.
First, when the destination is set by the user, the own vehicle position acquisition unit 9 acquires the current own vehicle position (longitude and latitude), and the travel route acquisition unit 8 refers to the map data to determine the destination from the current location. A travel route to the ground is determined (step ST21). Next, the road guide information presentation control unit 12 determines whether or not the same travel route as the determined travel route exists in the road guide information table 11. When there is no travel route that is the same as the determined route in the already stored route guidance information table 11 (in the case of NO in step ST22), there is no route guidance information that can be presented. Exit. On the other hand, when the same travel route as the determined travel route exists in the already stored route guidance information table 11 (in the case of YES in step ST22), the current vehicle position (latitude and longitude) is displayed. Obtain (step ST23).

Next, the vehicle position (longitude and latitude) at the time of utterance of the travel route is acquired from the road guidance information table 11 (step ST24). If the vehicle position acquired in step ST23 is within a predetermined range from the vehicle position acquired in step ST24 (YES in step ST25), the current time is acquired (step ST51). Then, the time at the time of utterance (time when the route guidance information was recorded) is acquired from the route guidance information table 11 (step ST52), and if the current time is within a predetermined range from the time at the time of utterance (in step ST53). In the case of YES, the utterance content (2) and the recorded voice (3) are acquired from the route guidance information table 11 (step ST26) and presented to the user (step ST27). Here, the “predetermined range” when comparing the time is a time that the user may set appropriately, such as 3 hours, for example, but the current time and the time at the time of utterance differ by only a few hours Therefore, it is determined that the situation is almost the same as that at the time of registration, and the same processing as in the first embodiment may be performed.

On the other hand, if the current time is a time that is significantly different from the time at the time of utterance stored in the route guidance information table 11 (in the case of NO in step ST53), the surrounding situation may be greatly different. Therefore, the surrounding state acquisition unit 16 acquires the current surrounding state (step ST54). Here, the surrounding state acquisition unit 16 that acquires the current surrounding state is, for example, VICS (Vehicle Information and Communication System) that acquires road conditions such as traffic jams and traffic restrictions, and visibility by photographing the traveling direction. Any camera can be used as long as it can acquire the situation of the surroundings, such as a camera for checking the surroundings. In the fourth embodiment, the camera is used to photograph the surroundings.

Then, the vicinity of the instruction point stored in the route guidance information table 11 is photographed by the camera (acquired by the surrounding situation acquisition unit 16), and the route guidance information presentation control unit 12 creates guidance contents according to the result ( Step ST55). For example, when the current time is 2 o'clock in the middle of the night, a mark (for example, “No. 6 in data No. 6 of the route guidance information table 11 shown in FIG. This is because a Japanese restaurant ”) is out of business hours and the surroundings are dark, so even if the driver says“ Leave a Japanese restaurant over there ”to the left, the driver may not be able to recognize the“ Japanese restaurant ”. Therefore, for example, the guidance content “Left second signal” is created and presented to the user (step ST56).
Then, until arriving at the destination or obtaining a vocabulary indicating the end or interruption of route guidance such as “arrival”, “end”, “interrupt”, “stop”, etc. (in the case of NO in step ST57), FIG. The process after step ST23 in the flowchart is repeated.

In this embodiment, only when the current time is larger than a predetermined range from the time of utterance stored in the route guidance information table 11 (time when the route guidance information is recorded), the surrounding situation acquisition unit 16 is used, but for example, there are cases where a large truck stops and it is not possible to confirm the mark when driving, or there is a case where construction is being performed only on that day. It may be.
On the other hand, if the current time differs significantly from the time when the utterance (the time when the route guidance information was recorded) is larger than the predetermined range, regardless of the surrounding situation, a guide that can be understood even at night ( It is also possible to create a clear guidance content regardless of time, such as “Left the signal at left” and present it to the user.

As described above, according to the fourth embodiment, the surrounding situation acquisition unit 16 is further provided, and the guidance content is re-created and presented in accordance with at least the time when the road guidance information is recorded or the current surrounding situation. Even if the surroundings are dark at night and it is difficult to visually recognize the mark, it is possible to present guidance contents that can be recognized by the user even if the situation is different from the utterance in which the route guidance information is registered. Therefore, more flexible and user-friendly presentation can be performed.

Embodiment 5. FIG.
FIG. 14 is a block diagram showing an example of a navigation apparatus according to Embodiment 5 of the present invention. Note that the same components as those described in the first to fourth embodiments are denoted by the same reference numerals, and redundant description is omitted. In the fifth embodiment described below, as compared with the first embodiment, an ambiguous expression table 17 is further provided, and when there is an ambiguous and difficult-to-understand expression in the user's utterance content, the expression is changed to an easy-to-understand specific expression. And presented to the user. The speech synthesizer 14 described in the second embodiment also includes the speech synthesizer 14 when the utterances that are not recorded by the speech recorder 3 are output as speech as a result of changing the utterance content to a specific expression that is easy to understand. The voice synthesized by step 14 is output.
FIG. 15 is a diagram illustrating an example of the ambiguous expression table 17.

FIG. 16 is a flowchart showing an operation when using the route guidance information according to the fifth embodiment.
The processing from step ST21 to ST26 is the same as that in the flowchart of FIG. Then, the utterance content acquired from the route guidance information table 11 in step ST26 is compared with the expressions stored in the ambiguous expression table 17, and if the utterance contents do not include an ambiguous and difficult-to-understand expression (step) In the case of NO in ST61, the utterance content and the recorded voice acquired in step ST26 are presented (step ST27) as in the first embodiment.

On the other hand, if the utterance content contains an ambiguous and difficult-to-understand expression (in the case of YES in step ST61), from the indication point and the map data, the name of the official intersection and how many meters ahead Is obtained (step ST62). For example, if the utterance content is “Left the intersection over there”, the official name “XX intersection” is acquired from the map data, or the specific intersection “300 m ahead” is determined based on the distance to the indicated point. Get specific expressions, such as showing distances.

Then, the ambiguous and difficult-to-understand expression in the utterance content of the route information table 11 is changed to a specific expression indicated by an official name, a specific distance, etc., and the utterance content is updated and saved (overwritten) ( Step ST63). As a result, even if there is an ambiguous and unintelligible expression in the utterance content, it is changed to a specific expression that is easy to understand.
In the fifth embodiment, the changed utterance content is overwritten and updated in the route guidance information table 11, but may be added as changed data.

Then, the synthesized speech corresponding to the utterance content after the expression is changed is created by the speech synthesizer 14 (step ST64), and the changed utterance content is displayed as the telop 32 shown in FIG. The voice is output as a voice (step ST65). As a method of synthesizing speech in the speech synthesizer 14, a known method may be used as in the second embodiment.
Further, when the synthesized voice is created, the recorded voice recorded by the voice recording unit 3 may be used. That is, the voice waveform included in the recorded voice that has already been recorded is processed and edited and created. For example, if the utterance content is “Left the intersection over there” but changed the official name to “Miwa intersection (left)”, the voice recording unit 3 already recorded “Miwa”. Then, “Mi” with the voice “Right”, “Wa” with the voice “Japanese restaurant”, and “Left the intersection” stored in the route guidance information table 11 are synthesized, By creating a voice saying “Left the intersection”, the voice of the person who performed the road guidance can be used for guidance. As a method for editing the speech waveform, a known method may be used.
Then, until arriving at the destination or obtaining a vocabulary indicating the end or interruption of the route guidance such as “arrival”, “end”, “interrupt”, “stop”, etc. (in the case of NO in step ST66), FIG. The process after step ST23 in the flowchart is repeated.

In the fifth embodiment, in accordance with the change of the utterance contents, the voice to be presented is not the recorded voice recorded at the time of utterance, but the synthesized voice corresponding to the change of the utterance contents is created and output. Similarly to the fourth embodiment, only the utterance content to be displayed and output may be changed, and the voice may be recorded voice. In this case, the output voice still contains an ambiguous expression, but because the character information (telop) has been changed to a specific expression, even if the voice contains an ambiguous expression, a specific expression The user can interpret it as specific guidance information by understanding the character information together with the display. *

As described above, according to the fifth embodiment, the ambiguous expression table 17 is further provided, and when there is an ambiguous and unintelligible expression in the utterance content of the route guidance information table 11, the expression is changed to a specific expression. Since it is presented, it is easy to understand even if it is guidance information that includes ambiguous expressions that make it difficult for the user to accurately grasp the indicated point. It is possible to present a guide for typical expressions, and to provide a more flexible and user-friendly presentation.
In addition, since the speech synthesizer 14 is further provided, and synthesized speech is generated and output in accordance with the change of the utterance content, guidance of specific expressions can be presented also by speech, which is more flexible. User-friendly presentation can be made. In addition, if the voice waveform contained in the recorded voice that has already been recorded is edited to create and output a synthesized voice, the voice of the person who gave the directions will be presented as a specific guidance. It is possible to provide a more flexible and user-friendly presentation.

Embodiment 6 FIG.
FIG. 17 is a block diagram showing an example of a navigation apparatus according to Embodiment 6 of the present invention. Note that the same components as those described in the first to fifth embodiments are denoted by the same reference numerals, and redundant description is omitted. In the sixth embodiment described below, compared to the first embodiment, the route guidance expression conversion table 18 is further provided, and the user's utterance content is not displayed as text information as it is as text information as shown in FIG. It is converted into visual information that is easy to recognize visually, such as graphics, and displayed.
FIG. 18 is a diagram illustrating an example of the route guidance expression conversion table 18.

FIG. 19 is a flowchart showing an operation when using the route guidance information according to the sixth embodiment.
The processing from step ST21 to ST26 is the same as that in the flowchart of FIG. And the expression memorize | stored in the route guidance expression conversion table 18 is detected from the utterance content acquired from the route guidance information table 11 in step ST26, and visual information, such as the graphic expression defined in the route guidance expression conversion table 18, is displayed. (Step ST71).

The converted visual information (graphic representation or character representation if character representation is also defined) and the recorded voice recorded in the route guidance information table 11 are presented to the user (step ST72).
FIG. 20 is a screen example of guidance information presented by converting the utterance content into visual information (graphical expression or graphic expression and character expression) based on the route guidance expression conversion table 18. FIG. 20A is a diagram showing the displayed navigation screen 31 and that the utterance content spoken at that time is “turn right 200 meters ahead” (balloon 33). In this case, the same content as that described in the balloon 33 is presented as the audio output, but the visual information is shown in FIG. 20B based on the route guidance expression conversion table 18 shown in FIG. As shown in FIG. 20C, the right arrow graphic data (graphic representation) 33 is displayed at the upper part of the intersection 200m ahead, or the character expression 34 "turn right" is attached to the upper part of the intersection 200m ahead. The graphic data (graphic representation) 33 indicated by the right arrow is displayed.
Then, until arriving at the destination or obtaining a vocabulary indicating the end or interruption of route guidance such as “arrival”, “end”, “interrupt”, “stop”, etc. (in the case of NO in step ST73), FIG. The process after step ST23 in the flowchart is repeated.

As described above, according to the sixth embodiment, the route guidance expression conversion table 18 is further provided, and the expressions stored in the route guidance expression conversion table 18 are detected from the utterance contents of the route guidance information table 11, Since it is converted into visual information such as graphic representations, it can be confirmed by visually recognizing information that can be heard through speech, and mistakes due to mishearing, text, etc. This eliminates the hassle of having to read the, so a more flexible and user-friendly presentation can be made.

Embodiment 7 FIG.
FIG. 21 is a block diagram showing an example of a navigation device according to Embodiment 7 of the present invention. Note that the same components as those described in the first to sixth embodiments are denoted by the same reference numerals, and redundant description is omitted. In the seventh embodiment described below, as compared with the first embodiment, an unnecessary expression storage unit 19 and an unnecessary expression extraction / deletion unit 20 are further provided, and the route guidance expression extracted by the route guidance expression extraction unit 5 is included in the route guidance expression. In the case where unnecessary expressions such as cancellation, correction, and non-reproducible expressions are included, such information is not stored in the route guidance information table 11.

FIG. 22 is a flowchart showing an operation at the time of registering route guidance information according to the seventh embodiment.
The processing from step ST01 to ST08 is the same as that in the flowchart of FIG. Then, it is checked whether or not the unnecessary expression stored in the unnecessary expression storage unit 19 is included in the route guidance expression extracted in step ST08. If the unnecessary expression is not included (NO in step ST81) In the case), the processes of steps ST09 to ST15 are performed as in the first embodiment. On the other hand, if unnecessary expressions are included (YES in step ST81), the unnecessary expressions and related unnecessary expressions are deleted (step ST82), and then the processes of steps ST09 to ST15 are performed.

FIG. 23 is a diagram illustrating an example of the unnecessary expression storage unit 19. For example, “There ’s right, wrong, left.” To cancel or correct the contents of the directions, such as “different”, “wrong”, “not ...”, For example, “Let's take a break there. Go right.” The phrase “Break” is not directly related to the directions, and other non-reproducible “ The phrase “follow me” is stored.

If these unnecessary expressions are included in the route guidance expression extracted in step ST08, the unnecessary expressions and related unnecessary expressions are deleted. In other words, for example, “Right right, different, left”, “different” is extracted as an unnecessary expression, and “right” spoken before that is also an unnecessary expression related to the unnecessary expression “different” It is deleted at the same time. As a result, the route guidance information table 11 stores only an appropriate route guidance expression “there, left”.

As described above, according to the seventh embodiment, the unnecessary expression storage unit 19 and the unnecessary expression extraction / deletion unit 20 are further provided. Unnecessary items that are not directly related to the route guidance such as cancellation, correction, and non-reproducible expressions. Such information is not stored in the route guidance information table 11 when unnecessary expressions are included, so unnecessary information is not stored, and a more flexible and user-friendly presentation is provided when using the route guidance. Can do.

Embodiment 8 FIG.
The block diagram showing an example of the navigation device according to the eighth embodiment of the present invention has the same configuration as the block diagram shown in FIG. 7 (an example of the navigation device according to the second embodiment), and therefore illustration and description thereof are omitted. . The eighth embodiment described below is suitable for users who travel in the reverse direction based on the registered route guidance information even when traveling in the direction opposite to the travel route at the time of registering the route guidance information. Information is created and presented.

FIG. 24 is a flowchart showing an operation when using the route guidance information according to the eighth embodiment. First, when the destination is set by the user, the own vehicle position acquisition unit 9 acquires the current own vehicle position (longitude and latitude), and the travel route acquisition unit 8 refers to the map data to determine the destination from the current location. A travel route to the ground is determined (step ST21). Next, the road guide information presentation control unit 12 determines whether or not the same travel route as the determined travel route exists in the road guide information table 11. When there is no travel route that is the same as the determined route in the already stored route guidance information table 11 (in the case of NO in step ST22), there is no route guidance information that can be presented. Exit. On the other hand, when the same travel route as the determined travel route exists in the stored route guidance information table 11 (in the case of YES in step ST22), the travel route in which the travel route is registered. It is determined whether or not the route is in the opposite direction (step ST91). For example, when there is an intersection of an instruction point that guides "right" when registering road guidance, if the direction is the same as the registered travel route (forward direction), the intersection turns right at the instruction point. However, in the reverse direction, the intersection turns to the left at the indicated point. Thus, it can be said that the traveling direction is the forward direction if the traveling direction and the traveling direction at the points in the traveling route stored in the route guidance information table 11 are the same, and the opposite direction if the traveling direction is the opposite direction.

Here, when the travel route is in the same direction (forward direction) as the travel route at the time of registering the route guidance information (in the case of NO in step ST91), it is the same as steps ST23 to ST27 shown in FIG. 5 in the first embodiment. The route guidance information is presented to the user.
On the other hand, when the travel route is in the opposite direction to that at the time of registration of the road guidance information (in the case of YES in step ST91), the current vehicle position (latitude and longitude) is acquired (step ST92), and the road guidance information table 11 is obtained. The distance to the designated point is acquired (step ST93). Since the distance acquired here is the distance in the forward direction, in order to make this correspond to the reverse direction, the instruction point corresponding to the distance is matched with the travel route in the reverse direction (current travel route). The longitude and latitude of the output position (presentation position) is calculated (step ST94).

FIG. 25 is an explanatory diagram schematically showing a method of calculating the longitude and latitude of the output position. In FIG. 25, the route entering from the upper right is the forward direction, and the route entering from the upper left is the reverse direction. Further, the triangle in the figure indicates the vehicle position, and the black circle X on the T-junction indicates the instruction point. Here, in the forward direction, it is assumed that road guidance is performed at point A 300 m before the instruction point X, and that information is stored in the road guidance information table 11. In this case, the road guidance information table 11 stores the longitude and latitude of the instruction point X and 300 m that is the distance from the instruction point X to the longitude and latitude at the time of utterance. At this time, if it is assumed that the vehicle is entering from the reverse direction, the B point 300 m before the instruction point X on the reverse direction side is calculated from the position of the instruction point X and the distance (300 m) to the instruction point X. This is set as the current guidance information output position.

Next, it is determined whether or not the current vehicle position is within a predetermined range from the output position (point B) calculated at step ST94. If the current vehicle position is within the predetermined range (YES in step ST95). In step ST96, the utterance content is acquired from the route guidance information table 11 (step ST96), and the acquired utterance content is converted in accordance with the current route (step ST97). For example, if the utterance registered at the time of the forward travel route is “next intersection to the right”, it is converted to “next intersection to the left” according to the reverse travel route. .
Note that the current vehicle position in FIG. 25 (the upper left triangle in the figure) is not within a predetermined range from point B, so the process returns to step ST92 for acquiring the vehicle position again and performs processing.

Then, the synthesized speech corresponding to the utterance content converted in step ST97 is created by the speech synthesizer 14 (step ST98), and the converted utterance content and the created synthesized speech are presented (step ST99). As for the method of synthesizing the voice, a known method may be used as described in the second and fifth embodiments, and the voice recording unit 3 is used as described in the fifth embodiment. You may make it utilize the audio | voice waveform of the audio | voice recorded by (1).
Then, until the destination is reached or a vocabulary representing the end or interruption of the route guidance such as “arrival”, “end”, “interrupt”, “stop” is obtained (NO in step ST100), step ST91 The processing of ST99 is repeated.

In the eighth embodiment, when the travel route is in the reverse direction, the utterance content and the synthesized voice for the reverse direction are created and presented each time. When the process of storing (description) in the information table 11 is completed, the route guidance information for the travel route in the reverse direction may be created and registered in advance.

As described above, according to the eighth embodiment, even if the route is in the reverse direction to the travel route at the time of registering the route guidance information, the reverse direction route guidance information is obtained based on the route guidance received once. It can be presented, that is, when driving on the way out (outbound), you can present the guidance information so that you can drive back on your own (return) on your own Can make presentations more flexible and user friendly.

Although this embodiment has been described as a vehicle-mounted navigation device, the navigation device of the present invention is not limited to a vehicle-mounted device, and navigation can be performed by voice interaction between the user and the device, such as a portable navigation device. Any device can be applied as long as it is a simple device.
In the present invention, within the scope of the invention, any combination of the embodiments, any modification of any component in each embodiment, or omission of any component in each embodiment is possible. .

The navigation device of the present invention can be applied to an in-vehicle navigation device or a portable navigation device capable of performing navigation by voice dialogue between a user and the device.

1 voice acquisition unit, 2 voice recognition unit, 3 voice recording unit, 4 route guidance expression storage unit, 5 route guidance expression extraction unit, 6 map data storage unit, 7 time acquisition unit, 8 travel route acquisition unit, 9 own vehicle position Acquiring part, 10 Road guidance information control storage part, 11 Road guidance information table, 12 Road guidance information presentation control part, 13 Road guidance information output part, 14 Voice synthesis part, 15 Vehicle speed acquisition part, 16 Peripheral situation acquisition part, 17 Ambiguous Expression table, 18 road guide expression conversion table, 19 unnecessary expression storage section, 20 unnecessary expression extraction / deletion section, 21 road guide information presentation section, 31 navigation screen, 32 character information (telop), 33 speech balloon, 34 figure expression, 35 characters Expression.

Claims

An audio acquisition unit for acquiring the input audio;
A voice recognition unit that performs voice recognition processing from the voice data acquired by the voice acquisition unit;
An audio recording unit for recording the audio data acquired by the audio acquisition unit into an audio file;
A route information storage unit for storing route information,
Referring to the route guidance expression storage unit, a route guidance expression extraction unit for extracting a route guidance expression from a recognition result by the voice recognition unit;
A travel route acquisition unit for acquiring a travel route;
A vehicle position acquisition unit for acquiring the position of the vehicle;
The route guidance expression extracted by the route guidance expression extraction unit is converted into the voice file recorded by the voice recording unit, the travel route acquired by the travel route acquisition unit and the voice acquisition unit when the voice acquisition unit acquires voice. A road guidance information control storage unit that records as road guidance information in association with the vehicle position acquired by the vehicle position acquisition unit,
When traveling on the same traveling route as the road guidance information recorded in the road guidance information control storage unit, the vehicle position is within a predetermined range from the vehicle position recorded as the road guidance information. A navigation apparatus comprising: a road guidance information presentation unit that outputs the road guidance information corresponding to the recorded vehicle position when detected.
When traveling on the same route as the travel route recorded in the road guidance information control storage unit in the opposite direction from when the road guidance information was stored,
The route guidance information presenting unit calculates an output position of backward direction route guidance information based on the route guidance information recorded in the route guidance information control storage unit and considering the traveling direction of travel. And reverse direction road guidance information is created, and if it is detected that the vehicle position during traveling is within a predetermined range from the output position of the reverse direction road guidance information, the reverse direction road The navigation apparatus according to claim 1, wherein the navigation information is output.
When traveling on the same route as the travel route recorded in the road guidance information control storage unit in the opposite direction from when the road guidance information was stored,
The route guidance information presenting unit creates a route guidance information for the reverse direction based on the route guidance information recorded in the route guidance information control storage unit and taking into account the traveling direction to travel. When it is recorded in the road guidance information control storage unit and the vehicle position at the time of traveling is detected to be within a predetermined range from the position recorded in the reverse direction road guidance information, the reverse position corresponding to that position is detected. The navigation apparatus according to claim 1, wherein direction guidance information is output.
The road guidance information presentation unit changes and outputs the position and the output content of the road guidance information based on position information recorded in the road guidance information control storage unit. The navigation device according to 1.
It further includes a vehicle speed acquisition unit that acquires the vehicle speed of the host vehicle,
The road guidance information control storage unit records the road guidance information in correspondence with the vehicle speed when the voice data was recorded,
The road guidance information presentation unit changes the position where the road guidance information is output, or the position and the output content based on the position information and the vehicle speed recorded in the road guidance information control storage unit, and outputs the changed information. The navigation device according to claim 1.
It further includes a surrounding situation acquisition unit that acquires surrounding conditions,
2. The route guidance information presentation unit changes and outputs an output content of the route guidance information based on at least the time when the route guidance information is recorded or the surrounding situation. Navigation device.
Further provided with an ambiguous expression table for storing ambiguous expressions,
The route guidance information presenting unit, when the ambiguous expression stored in the ambiguous expression table is included in the route guidance expression extracted by the route guidance expression extracting unit, The navigation apparatus according to claim 1, wherein the output is made after the change.
The navigation apparatus according to claim 1, wherein the route guidance information presentation unit changes the route guidance expression extracted by the route guidance expression extraction unit into visual information and outputs the visual information.
It further comprises a speech synthesizer that creates speech by speech synthesis,
When the route guidance information is output by voice after the route guidance information to be output is newly created or changed, the voice guidance information presentation unit is configured to output the voice for the vocabulary not recorded by the voice recording unit. The navigation device according to any one of claims 2 to 7, wherein the synthesized speech generated by the synthesis unit is output.
The vocabulary not recorded in the voice recording unit further includes a voice synthesis unit that creates voice by voice synthesis based on the voice recorded by the voice recording unit,
When the route guidance information is output by voice after the route guidance information to be output is newly created or changed, the voice guidance information presenting unit outputs the voice for the vocabulary not recorded in the voice recording unit. The navigation device according to any one of claims 2 to 7, wherein the synthesized speech generated by the synthesis unit is output.
A cancellation / correction expression storage for storing expressions used in canceling or correcting;
A cancellation / correction expression extracting unit that refers to the cancellation / correction expression storage unit and extracts an expression used for cancellation / correction from a recognition result by the voice recognition unit;
The navigation device according to claim 1, wherein the route guidance information control storage unit does not store route guidance information when the cancellation / correction expression is extracted.
A step in which the voice acquisition unit acquires the input voice;
A voice recognition unit performing voice recognition processing from the voice data acquired by the voice acquisition unit;
A voice recording unit recording the voice data acquired by the voice acquisition unit;
A step of storing a route guide expression storage unit,
A step of extracting a route guidance expression from a recognition result by the voice recognition unit with reference to the route guidance expression storage unit;
A travel route acquisition unit acquiring a travel route;
A step of acquiring a position of the vehicle by the vehicle position acquisition unit;
The route guidance information control storage unit has the route guidance expression extracted by the route guidance expression extraction unit, the voice file recorded by the voice recording unit, the travel route acquired by the travel route acquisition unit, and the voice acquisition unit. Correlating with the vehicle position acquired by the vehicle position acquisition unit when the voice is acquired, and recording as road guidance information;
When the road guidance information presentation unit travels on the same travel route as the road guidance information recorded in the road guidance information control storage unit, the vehicle position is determined from the vehicle position recorded as the road guidance information. And a step of outputting the road guidance information corresponding to the recorded vehicle position when it is detected that the vehicle is within the range of.
Computer
An audio acquisition unit for acquiring the input audio;
A voice recognition unit that performs voice recognition processing from the voice data acquired by the voice acquisition unit;
An audio recording unit for recording the audio data acquired by the audio acquisition unit into an audio file;
A route information storage unit for storing route information,
Referring to the route guidance expression storage unit, a route guidance expression extraction unit for extracting a route guidance expression from a recognition result by the voice recognition unit;
A travel route acquisition unit for acquiring a travel route;
A vehicle position acquisition unit for acquiring the position of the vehicle;
The route guidance expression extracted by the route guidance expression extraction unit is converted into the voice file recorded by the voice recording unit, the travel route acquired by the travel route acquisition unit and the voice acquisition unit when the voice acquisition unit acquires voice. A road guidance information control storage unit that records as road guidance information in association with the vehicle position acquired by the vehicle position acquisition unit,
When traveling on the same traveling route as the road guidance information recorded in the road guidance information control storage unit, the vehicle position is within a predetermined range from the vehicle position recorded as the road guidance information. A navigation program for functioning as a road guidance information presentation unit that outputs the road guidance information corresponding to the recorded vehicle position when detected.