Classifications

• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
  • G09B29/00—Maps; Plans; Charts; Diagrams, e.g. route diagram
  • G09B29/10—Map spot or coordinate position indicators; Map reading aids
  • G09B29/106—Map spot or coordinate position indicators; Map reading aids using electronic means
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
  • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
  • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
  • G01C21/34—Route searching; Route guidance
  • G01C21/36—Input/output arrangements for on-board computers
• • G—PHYSICS
  • G08—SIGNALLING
  • G08G—TRAFFIC CONTROL SYSTEMS
  • G08G1/00—Traffic control systems for road vehicles
  • G08G1/09—Arrangements for giving variable traffic instructions
  • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
  • G08G1/0968—Systems involving transmission of navigation instructions to the vehicle
  • G08G1/0969—Systems involving transmission of navigation instructions to the vehicle having a display in the form of a map

Definitions

• the present invention relates to an interactive route guidance device, and more particularly, to a route guidance device that interactively provides guidance information to a user.
• a typical navigation system uses a digital map data stored in a recording medium such as a CD (Compact Disc), a DVD (Digital Versatile Disc) or a hard disk, for example, to provide a route from the starting point to the destination of the vehicle. To explore. After that, the navigation system provides guidance according to the searched route. During such guidance, a general navigation system follows a fixed rule (hereinafter referred to as a guidance rule).
• a guidance rule a fixed rule
• a route guidance device capable of providing guidance information interactively as follows (hereinafter referred to as a conventional route guidance device)
• the conventional route guidance device outputs guidance information based on a request from the user, rather than only unilaterally providing the guidance information to the user according to the fixed guidance rule as described above. Specifically, the user requests the conventional route guidance device to output guidance information by manual input and / or voice input. In response to such a request, the conventional route guidance device selects guidance information including a remaining distance to a destination, a target, and a traveling direction, and provides the selected guidance information to a user (for example, Japanese Patent Application Laid-Open 8-254437).
• the guide information required by the user has a certain tendency depending on the characteristics of each user. Therefore, the user is provided by the conventional route guidance device There is a problem in that it is not possible to obtain guidance information having an appropriate amount and appropriate content for the user only with the guidance information that is used.
• the conventional route guidance device requires the user to perform an operation before providing the guidance information, and thus there is a problem that the user feels troublesome.
• the guidance information required by the user tends to vary depending on the individual, but according to the conventional route guidance device, the user needs to repeat the same operation in a similar situation. For example, suppose that a user tends to request guidance information about 100 meters before crossing an intersection. However, according to the conventional route guidance device, the user needs to operate it about 100 meters before approaching the first intersection, and about 100 meters before the next intersection. Need to operate.
• an object of the present invention is to provide an interactive route guidance device that can provide guidance information of an appropriate amount and content at an appropriate timing according to the tendency of a user.
• a first aspect of the present invention is directed to an interactive route guidance device.
• the interactive route guidance device stores the guidance information in accordance with a storage unit that stores at least one table defining what kind of guidance information is provided on the route from the departure point to the destination, and a table in the storage unit.
• a guide information creating unit to be created an output unit for outputting the guide information created by the guide information creating unit, an input unit operated by a user to request the guide information, and the contents of the request input to the input unit and
• a request management unit for managing the number of times, and an editing unit for editing a table stored in the storage unit according to the content and the number of times managed by the request management unit.
• the storage unit stores a table in which the timing of providing guidance information is described, and the editing unit controls the timing described in the table based on the content and the number of times managed by the request management unit. To change.
• the storage unit stores a table in which the guidance direction at the intersection to which the guidance information is to be provided is described, and the editing unit based on the content and the number of times managed by the request management unit. The guide direction described in the table is changed. [0010] Further, the storage unit stores a table defining the contents of the guide information, and the editing unit stores the contents of the guide information specified in the table based on the contents and the number of times managed by the request management unit. To change.
• the editing unit changes the content and amount of the guide information created at one time, and changes the frequency at which the guide information is created.
• a second aspect of the present invention is directed to an interactive route guidance method.
• the interactive route guidance method includes a guidance information creation step of creating guidance information according to at least one table that defines what kind of guidance information is provided on the route from the departure point to the destination.
• An output step for outputting the guidance information created in the information creation step, a request management step for holding the content and the number of requests input by the user, and a table in accordance with the content and the number held in the request management step. Editing step of editing.
• a third aspect of the present invention is directed to a computer program for realizing interactive route guidance.
• the computer program includes a guide information creating step for creating guide information according to at least one table that defines what kind of guide information is provided on the route from the departure point to the destination.
• An output step for outputting the guidance information created in the creation step, a request management step for holding the content and number of requests input by the user, and a table edit according to the content and number held in the request management step Editing step.
• the computer program is recorded on a recording medium.
• the table is edited based on the content and the number of requests from the user. In other words, the table is edited according to the user's personal tendency. Since the guide information is created based on such a table, according to each of the above aspects, it is possible to provide guide information of an amount and content according to the tendency of the user.
• FIG. 1 is a block diagram showing a configuration of an interactive route guidance device according to one embodiment of the present invention.
• FIG. 2 is a schematic diagram showing representative data recorded on a storage medium of a storage device 2 shown in FIG. 1.
• FIG. 3 is a schematic diagram showing an example of a data structure of an element DB22 shown in FIG. 2.
• FIG. 4A is a first schematic diagram showing the periphery of a node N1 as a target intersection.
• FIG. 4B is a schematic view illustrating the data structure and contents of the guide direction table 23 (initial state) shown in FIG.
• FIG. 5 is a schematic diagram illustrating the data structure and contents of a guidance timing table 24 (initial state) shown in FIG. 2.
• FIG. 6 is a schematic diagram illustrating the data structure and contents of a guidance content table 25 (initial state) shown in FIG. 2.
• FIG. 7 is a schematic diagram illustrating a data structure and contents of a request management table 26 shown in FIG. 2.
• FIG. 8 is a schematic diagram illustrating the data structure and contents of a response content table 27 (initial state) shown in FIG. 2.
• FIG. 9 is a schematic diagram showing an example of a hardware configuration of an arithmetic processing unit 4 shown in FIG. 1.
• FIG. 1 OA is the first half of a flowchart showing the processing procedure of the interactive route guidance device shown in FIG.
• FIG. 10B is the latter half of the flowchart showing the processing procedure of the interactive route guidance device shown in FIG. 1.
• FIG. 11 is a flowchart showing a detailed processing procedure of step S11 shown in FIG. 10B.
• FIG. 12 is a schematic diagram of the guidance content table 26 edited in step S22 of FIG.
• FIG. 13 is a schematic diagram of the guidance content table 26 edited in step S24 of FIG.
• FIG. 14 is a schematic diagram of the guidance content table 26 edited in step S26 of FIG.
• FIG. 15A is a second schematic diagram showing the periphery of node N1 as a target intersection.
• FIG. 15B is a schematic diagram of the guide direction table 23 edited in step S28 of FIG.
• FIG. 16 is a schematic diagram showing the guidance timing table 24 edited in step S210 of FIG.
• FIG. 17 is a schematic diagram showing the guidance content table 25 edited in step S210 of FIG.
• FIG. 18 is a schematic diagram showing an alternative example of the process in step S6 of FIG. 1 OA. Explanation of symbols
• FIG. 1 is a block diagram showing a configuration of an interactive route guidance device according to an embodiment of the present invention (hereinafter, simply referred to as “route guidance device” in the present embodiment).
• the route guidance device is mounted on, for example, an in-vehicle navigation system, and includes an input device 1, a storage device 2, a locator 3, an arithmetic processing unit 4, and an output device 5. ing.
• the input device 1 is a device operated by a user to input various information to the route guidance device.
• the input device 1 includes a microphone. The user inputs various guidance requests by voice to the microphone.
• the storage device 2 preferably writes data to and reads data from a rewritable and non-volatile storage medium that is rewritable.
• FIG. 2 is a schematic diagram showing representative data recorded on the storage medium of the storage device 2.
• the storage medium includes a map database (hereinafter referred to as a map DB). 1.
• An element database (hereinafter referred to as an element DB) 22 22, a guidance direction table 23, a guidance timing table 24, a guidance content table 25, a request management table 26, and a response content table 27 are recorded. .
• the map DB21 includes at least nodes and links indicating connection relationships of roads existing within a predetermined range, which are known.
• the nodes typically indicate feature points on the road, such as intersections, bends, and dead ends, using coordinate values.
• a link indicates a road section between two adjacent feature points.
• Element DB22 includes elements necessary for creating guidance information.
• FIG. 3 is a schematic diagram showing an example of the data structure of the element DB22.
• the guidance DB 11 illustratively includes a considerable number of phrases.
• the phrase is an example of the above-described element, and is a segment in the voice represented by the guidance information.
• Figure 3 shows an adverb such as "approximately” or “soon”, a direction such as “rightward” or “left licking forward", "10,000” or "900”. ] Or a proper noun such as "A intersection" or "B town".
• Each of these phrases is assigned a unique element number.
• the guidance direction table 23 defines the traveling direction (that is, the guidance direction) of the vehicle at the intersection (hereinafter, referred to as "target intersection") as the target of the guidance information.
• FIG. 4A is a schematic diagram showing the periphery of the node N1 as the target intersection.
• FIG. 4A first shows a node N1 and a link L1.
• Node N1 is a node indicating a target intersection where a vehicle is about to enter.
• the link L1 is a link indicating a road section on which the vehicle is currently traveling, and is connected to the node N1.
• FIG. 4A further shows a 360 ° force around the node N1 divided by 4 based on the approach direction of the vehicle, and angle ranges 1 to 24 divided into four.
• the angle range 1 is 352.5. ⁇ a ⁇ + 7.5 °.
• the angle range i has a range obtained by rotating the angle range a (i-1) around the node N1 by 30 ° in the positive direction. Where i is a natural number from 2 to 24. Note that the number of divisions around the node N1 is freely determined according to the design specifications of the route guidance device, other than the 24 divisions.
• the vehicle guidance direction includes a straight traveling direction, a left oblique front, a left direction, a left oblique rear, a U-turn direction, a right oblique rear, a right direction, and a right oblique front with respect to the node N1 and the link L1.
• Eight are defined.
• the angle ranges a12 to h14 are assigned to the straight traveling direction.
• the route guidance device determines that the guidance information is unnecessary and does not provide the guidance information to the user.
• an angle range from 15 to 17 is assigned diagonally forward to the left
• an angle range from 18 to 20 is assigned to the left
• an angle range from 21 to 23 is assigned to the diagonal left.
• FIG. 4A further shows a link L2 representing a road section where the vehicle travels immediately after passing through the node N1.
• the route guidance device creates guidance information for guiding the vehicle to the left.
• FIG. 4A is a schematic diagram illustrating the data structure and contents of the guide direction table 23 in the initial state of the route guide device.
• the guide direction table 23 describes an angular range assigned to each guide direction. Specifically, in the initial state, the angle range ⁇ 12_ ⁇ 14 has a straight-direction force, the angle range ⁇ 15_ ⁇ 17 has an oblique left front, and the angle range ⁇ 18- ⁇ 20 has a leftward force. - ⁇ 23 is assigned to the rear left. Further, angle ranges ⁇ 24, ⁇ ⁇ and ⁇ 2 are allocated in the U-turn direction.
• an angle range 3_hi 5 an angle range 6_hi 8 and an angle range 9_hi 11 are assigned to the diagonally right backward, diagonally right and diagonally forward.
• the angle range assigned to each guide direction is rewritten by the arithmetic processing unit 4 so as to conform to the user's tendency.
• FIG. 2 is referred to again.
• the guidance timing table 24 defines when or where to provide guidance information to the vehicle.
• FIG. 5 is a schematic diagram illustrating the data structure and contents of the guidance timing table 24 in the initial state.
• the inner timing table 24 for example, as the guidance timings, "at the start of route guidance", "a point 700m before the target intersection”, “a point 300m before the target intersection”, and "a point 100m before the target intersection” Point, 2 km before the destination, lk m before the destination, and 100 m before the destination. Note that the guidance timing table 24 is rewritten by the arithmetic processing unit 4 so as to follow the user's tendency, as described later.
• FIG. 6 is a schematic diagram illustrating the data structure and contents of the guidance content table 25 in the initial state.
• the guidance timing is defined as described above, seven contents of the guidance information are defined in the guidance content table 25.
• the guidance content table 25 is also rewritten by the arithmetic processing unit 4 as described later.
• the route guidance device provides guidance information "start voice guidance” by sequentially outputting the phrases specified by element numbers 1 and 2.
• * j means an element number indicating the guide direction determined by the arithmetic processing unit 4 with reference to the guide direction table 23 of FIG. 4B. Since the guide direction described above is described in the guide direction table 23, * j is one of the forces selected from the element numbers 101-107. As a result, at the point 700 m before the target intersection, guidance information with the content of "approximately 700 m in the XX direction (direction specified by * j)" is provided. The element number selected in the same way is described for "point 300m before the target intersection" and "point 100m before the target intersection".
• the request management table 26 is a table for recording the number of inputs for each guidance request from the input device 1.
• FIG. 7 is a schematic diagram illustrating the data structure and contents of the request management table 26.
• the request management table 26 records at least the content and the number of inputs for each guidance request. Some guidance requests have input timing recorded.
• the guidance request includes a request for re-outputting the guidance information output immediately before.
• the guidance request there is a request for guidance information different from the guidance information output immediately before.
• Still another guidance request is a request S made by the user's will in a state where guidance information is not output.
• the contents of the guidance request in the present embodiment include “What is a landmark?”, “What is the name of an intersection?”, “What is the required time?”, “What is the distance?”, And “Here?”.
• N1 is a variable, and indicates the number of times the user is asked "What is a landmark?"
• N2 is recorded.
• N2 is a variable, and indicates the number of times the user is asked "What is the name of the intersection?"
• N3 and N4 are variables, respectively.
• N3 is the number of times the user asked "How long does it take?" At the start of route guidance
• N4 is the number of times the same was asked after the start of route guidance.
• N5 and N6 are variables, respectively. Specifically, N5 is the number of times the user asked "What is the distance?" At the start of route guidance, and N6 is the number of times the same was asked after the start of route guidance.
• N7 is the hand of the intersection that is not the target intersection from the user "Here?”
• N8 is a variable indicating the number of times the same was asked before the target intersection.
• FIG. 2 is referred to again.
• the response content table 27 defines what type of response is provided for each guidance request described above. Although details will be described later, the response content table 27 is also rewritten by the arithmetic processing unit 4.
• FIG. 8 is a schematic diagram illustrating the data structure and contents of the response content table 27 in the initial state. If the guidance request is as described above (see Fig. 7), the element number * k, 13 and 18 are described for the guidance request.
• * k means an element number indicating a noun (that is, a mark) selected by the arithmetic processing unit 4.
• element DB22 (see Figure 3), assuming that element numbers 201-210 are assigned a noun to be a marker, * k is any force 4 selected from element numbers 201-210. . Accordingly, when the user asks “What is a landmark?”, The route guidance device provides guidance information having a response content of “XX is a landmark”.
• m means the element number (for example, element number 1001) indicating the name of the intersection selected by the arithmetic processing unit 4. Accordingly, when the route guidance device is asked, "What is the name of the intersection?", The route guidance device replies, "XX intersection.”
• a set of element numbers 16, 4, * n, 22 and 18 and a set of element numbers 24, 4, * n, 22 and 18 are described.
• the former set of element numbers is assigned to an input timing of starting route guidance, and the latter is assigned to an input timing of after starting route guidance.
• * n means the element number (for example, element number 345) indicating the required time obtained by the arithmetic processing unit 4. Accordingly, when the route guidance device is asked “What is the required time?” At the start of the route guidance, the route guidance device replies, for example, “The required time is approximately XX minutes”. XX minutes left. " Also, for "What is the distance?", The element number selected in the same manner is described.
• the locator 3 typically includes an antenna and a receiver for receiving information from a positioning system such as a GPS (Global Positioning System), and an autonomous navigation sensor typically including a speed sensor and a gyro sensor. Including.
• a positioning system such as a GPS (Global Positioning System)
• an autonomous navigation sensor typically including a speed sensor and a gyro sensor.
• the GPS antenna and its receiver calculate the absolute position of the vehicle on the earth using the information transmitted by the satellite accommodated in the positioning system.
• the speed sensor and the gyro sensor are installed on the vehicle, respectively, and detect a traveling speed and a change in direction of the vehicle.
• the locator 3 includes a combination of the antenna and the receiver, a self-contained navigation sensor, and / or a displacement.
• the arithmetic processing unit 4 performs various data processing using the data stored in the storage device 1, the output signal of the input device 2, and the output signal of the indicator 3.
• FIG. 9 is a schematic diagram showing an example of a hardware configuration of the arithmetic processing unit 4.
• the arithmetic processing unit 4 includes a program memory 41, a processor 42, and a working area 43.
• the program memory 41 is typically a ROM (Read Only Memory), and stores a computer program (hereinafter simply referred to as a program) 411.
• the program 411 mainly describes the operation of the arithmetic processing unit 4.
• the processor 42 executes the program 411.
• the working area 43 is typically a RAM (Random Access Memory), and is used by the processor 42 to execute the program 411.
• the output unit 5 includes a display device and / or a speaker.
• the display device displays various types of information created by the arithmetic processing unit 4, and the speaker outputs various types of information created by the arithmetic processing unit 4 as audio.
• the processor 42 performs an initialization process after the start of the route guidance device), and thereafter performs various processes according to the program 411 while using the working area 43.
• the processor 42 determines whether or not to calculate the current position of the vehicle (FIG. 10A; step Sl). The calculation of the current position is performed every predetermined time, for example, every second. If YES is determined in step S1, the processor 42 calculates the current position using the output signal from the locator 3 (step S2). afterwards The processor 42 uses the map DB 21 to create a map image around the current position. The created map image is transferred to the display device of the output device 5, and the display device outputs the received map image (step S3).
• step S3 the processor 42 determines whether or not the destination has been received from the input device 1 (step S4). If the determination is YES, the processor 42 searches for a route from the departure point to the destination using the map DB 21 according to a known algorithm (step S5). Here, the searched route includes at least the node sequence. As the departure place, the one sent from the input device 1 or the current position of the vehicle is used.
• the processor 42 selects an intersection (target intersection) for which guidance information is to be provided from the nodes included in the searched route (step S6).
• an intersection at which the vehicle is going to go straight is used as the target intersection. Determined as the difference.
• step S7 the processor 42 determines whether or not the current time is the guidance timing (step S7). Specifically, it is determined whether or not the present time is the time defined in the guidance timing table 24, or whether or not the current position obtained in step S2 is the position defined in the guidance timing table 24.
• step S 7 the processor 42 acquires the currently required element number from the guidance content table 25. Further, the processor 42 acquires from the element DB 22 a phrase having the same set as the element number acquired this time. After that, the processor 42 collects the phrases obtained this time and creates guidance information that represents the guidance content by voice.
• the guidance timing is defined as shown in FIG. 5, at the start of the route guidance, guidance information having a content “start voice guidance” is created.
• the processor 42 calculates in which angular range the exit link from the target intersection is included in FIG.4A. Then, the guide direction is determined. According to the determined guiding direction, the processor 42 obtains an appropriate phrase as the element DB22 force, * j shown in FIG. So, for example, object intersection If the vehicle is 700m to the point and the guidance direction is determined to be right, guidance information will be provided that reads "approximately 70 Om and turns right". Also, for example, if the current position is a point 2 km before the destination, guidance information with the content "approximately 2 kilometers is the destination" is created.
• the guide information created as described above is transferred from the arithmetic processing unit 4 to the output device 5, and the speaker of the output device 5 outputs a voice according to the received guide information (Step S8) .
• step S8 or when determining NO in step S7 the processor 42 determines whether or not to receive the guidance request from the input device 1 (step S9 in FIG. 10B).
• the one shown in FIG. 7 is defined as the guidance request.
• the user can input a guidance request by voice to the route guidance apparatus.
• the processor 42 uses a well-known voice recognition algorithm and determines YES in step S9 if the input voice is any of the guide requests described above.
• the processor 42 updates the request management table 26 (Step S10). Specifically, the processor 42 increments the number of times of inputting the current guidance request in the request management table 26 by one. When asked "What is a landmark?", N1 of the request management table 26 is incremented by one. Similarly, in the case of other guidance requests, the corresponding force N2—N8 is incremented by one.
• step S11 the processor 42 performs editing processing of various tables.
• FIG. 11 is a flowchart showing a detailed processing procedure of step S11.
• the processor 42 determines whether or not the number of inputs N1 has become equal to or greater than the reference value N (step S21). If the determination is YES, the processor 42 determines that the user tends to want a landmark as guidance information of the target intersection, and specifies a phrase necessary for outputting the landmark to the guidance content table 26. An element number is added (step S22). Ingredient For example, as shown in the bold line in FIG. 12, for example, as guidance timings, ⁇ 700 m before the target intersection, '' ⁇ 300 m before the target intersection, '' and ⁇ 100 m before the target intersection, '' Element numbers * q, 13 and 18 are added.
• * q means the element number assigned to the phrase representing the mark.
• the phrase “convenience store is”, “gasoline stand is”,... “Family restaurant power S” are described as the landmarks. It is four or more in any case selected from 201-210.
• guidance information such as "The landmark is a convenience store” is provided in addition to the content "About 700 m in the XX direction”.
• Element numbers selected in the same way are added to “points 300m before the target intersection” and “points 100m before the target intersection”.
• step S22 determines whether or not the number of inputs N2 is equal to or more than the reference value N (step S23). If the answer is YES and a semi-IJ is determined, the processor 42 determines that the user tends to want the name of the target intersection, and specifies the phrase necessary to output the name of the intersection in the guidance content table 26. Add a number (step S24). Specifically, for example, as shown in the bold line in Fig. 13, the element numbers of the guidance timings of "700m before the target intersection", "300m before the target intersection force" and "100m before the target intersection" * r is added just before * j.
• * r means the element number assigned to the phrase representing the name of the intersection store.
• the element DB22 exemplifies the phrase “intersection A” as a phrase that can be the name of the crossing store. Therefore, * r is the element number 1001. Therefore, for example, at a point 700 m before the target intersection, guidance information that the content is about 700 m and the intersection A is in the XX direction is provided. Element numbers selected in the same way are also added for “points 300m before the target intersection” and “points 100m before the target intersection”.
• step S24 determines whether any of the input counts N3 and N5 has exceeded the reference value N (step S23). S25). If YES, the processor 42 determines the mileage at the start of route guidance. It is determined that the user tends to want the travel distance and the required time, and the guidance information defined to be output at the start of the route guidance in the guidance content table 26 is necessary to output the mileage and the required time.
• An element number for specifying a phrase is added (step S26). Specifically, as shown in the bold line in FIG. 14, the element numbers 15, * n, 19, 16, * s, 22 and 18S Is done. Here, * n and * r are as described above. Therefore, for example, at the start of route guidance, guidance information that says, "Start voice guidance. Travel distance is 15 km. Travel time is 15 minutes.”
• step S27 the processor 42 determines whether or not the input number N7 has become equal to or more than the reference value N (step S27). If a half IJ is determined as YES, the processor 42 rewrites the guide direction table 23 as described in detail below (step S28). That is, the input count N7 indicates the number of times the user asked “here?” At the non-target intersection, as described above. The fact that such a large number of inputs N7 indicates that the route guidance device is an intersection where the vehicle goes straight ahead, and thus was not determined to be a guidance target intersection, but the user feels that he does not go straight at this intersection. Means that. As shown in FIGS.
• the processor 42 extends the angle range assigned to each of the diagonally forward left and diagonally forward right in the guide direction table 23 by one in the straight traveling direction. As a result, for example, even when the exit link L2 is included in the angle range ⁇ 14, guidance information with the content “approximately 700 m and the intersection is diagonally left ahead” is output.
• step S28 determines whether or not the number of inputs N8 is equal to or more than the reference value N (step S29). If the determination is affirmative (YES in step S210), the processor 42 deems that the user is uncomfortable with specifying which intersection is the target intersection, and edits the guidance timing table 24 and the guidance content table 25 (step S210). ). Specifically, as shown in FIG. 16, the processor 24 sets a new distance (40 m in the illustrated example) from the target intersection in the guidance timing table 24, as shown in FIG. Is added. Further, the processor 24 adds the guidance timing added this time and the element numbers * j and 18 to the guidance content table 25 as shown in the bold line in FIG. The information added this time About the timing, the content of the guidance information is added. Thus, for example, at a point 40 m before the target intersection, guidance information with the content “Left direction” is provided.
• step S210 After the end of the above step S210, or when determining NO in step S29, the processor 42 exits the editing process shown in FIG. 11 and performs step S12 in FIG. 10B.
• step S12 the processor 42 acquires the currently required element number from the response content table 27 according to the content of the guidance request and the input timing. Further, the processor 42 collects the phrases acquired from the element DB 22 in the same manner as in the processing described in step S8, and creates guidance information indicating the contents of the response in voice.
• the processor 42 determines whether or not to terminate the processing shown in FIGS. 10A and 10B (Step S13). If the determination is NO, the processor 42 performs the step S1 shown in FIG. 10A, but ends the processing if the determination is YES.
• the present interactive route guidance device includes the input device 1 for the user to input a guidance request. Further, the arithmetic processing unit 4 manages at least the content and the number of guidance requests from the user using the request management table 26. The arithmetic processing unit 4 further refers to the request management table 26 and edits the various tables 23-25 and 27 in the storage device 2 when the number of times of inputting the guidance request having the same content exceeds the reference value N. Therefore, the arithmetic processing unit 4 generates guide information using the various tables 23-25 and 27 in which such editing is performed. Accordingly, the interactive route guidance device can provide guidance information of an appropriate amount and content at an appropriate timing according to the tendency of the user.
• the input device 1 is assumed to be a microphone.
• the force described above is not limited to this.
• the user can operate an input device that can be manually input, such as a remote controller, and operate the user. May input a guidance request.
• the storage device 2 includes a storage medium having data rewritable and non-volatile. It was explained as. In addition, for convenience, it has been described that the map DB21 and the element DB22 are also stored in the storage device 2. However, with regard to the map DB21 and the element DB22, it is not essential that the data be stored in such a storage device 2. It may be stored in a storage device.
• step S6 the processor 42 has been described as selecting all the target intersections of the searched route power.
• the present invention is not limited to this.
• the processor 42 may be configured as shown in FIG. In the searched route SR (portion indicated by a thick line), an intersection included in a predetermined range R1 toward the destination DP based on the current position CP may be selected as a target intersection. . However, in this case, the processor 42 needs to select the target intersection from the intersections included in the next range R1 every time there is no target intersection.
• the processor 42 adds data to various tables.
• the processor 42 may input data from the various tables for a guidance input with a low input frequency. You may delete it.
• a force using only one type of reference value N is not limited to this, and a different reference value may be used for each of N1—N3, N5, N7, and N8. You can be prepared. Further, it is more preferable that the reference values are determined for each content of the guidance request or for each combination of the guidance request and the input timing.
• step S25 in FIG. 11 the processor 42 determines whether or not N3 or N5 is equal to or more than the reference value N. If N3 is equal to or greater than the reference value N, the traveling distance may be added, and if N5 is equal to or greater than the reference value N, the required time may be added.
• the program 411 is described as being stored in the program memory 41.
• the present invention is not limited to this, and the program 411 may be stored in a storage medium such as a CD-ROM. It may be distributed on the Internet, or may be distributed via a network.
• the interactive route guidance device has an appropriate amount It is useful as an in-vehicle navigation system that requires the technical effect of providing guidance information at appropriate timing.

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