JP2002039779A - Navigation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation system by which the position of a crossing can be recognized easily. SOLUTION: When the crossing is brought close within a prescribed distance from the position of an own vehicle, a facility searching part 52 retrieves data regarding various facilities existing around the crossing (guidance crossing), and it creates a facility list to which the prescribed order of priority is attached. A fundamental-information guidance part 54 performs a processing operation which displays a prescribed crossing macrograph so as to correspond to the guidance crossing and a processing operation which outputs a prescribed guidance voice containing the name of a facility whose order of priority is highest in the facility list. An additional-information guidance part 56 sequentially selects facilities whose order of priority contained in the facility list is second and onward whenever an instruction that additional information is required is given by a user, and it performs a processing operation which adds and outputs the prescribed guidance voice containing the names of the facilities.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation system for displaying map information around the position of a vehicle and guiding information on an intersection at which the vehicle passes.

[0002]

2. Description of the Related Art Generally, an on-vehicle navigation system detects a current position of a vehicle, reads map data corresponding to the current position from a data storage medium such as a CD or DVD, and displays a map around the position of the vehicle on a screen. Display above. Also, a vehicle position mark indicating the own vehicle position is displayed at a predetermined position on the screen, and the map of the vicinity is scrolled around the vehicle position mark as the own vehicle advances.

A general navigation system is equipped with a route guidance function that allows a user to travel to a desired destination on a road without making a mistake. According to this route guidance function, the lowest cost route from the starting point to the destination set by the user is automatically searched, and the searched route (guide route) is
It is drawn on the map in a different color from other roads. When the vehicle approaches the intersection on the guidance route, a guide image such as an enlarged view of the intersection or an arrow indicating the lane in which the vehicle should travel is displayed and a predetermined guidance voice is output,
The course can be easily grasped.
In particular, recently, in order to guide the location of an intersection more easily, a facility that serves as a landmark for the user is selected from various facilities existing around the intersection, and a guidance voice including the name (for example, Navigation systems that output "Right turn, 300m ahead. Mark is Bank A" are also in widespread use.

[0004]

By the way, in the conventional navigation system, when outputting the guidance voice including the name of the facility as a landmark, the name is presented to the user by the guidance voice under a predetermined condition. There was only one facility set based on However, depending on the position of the vehicle and the direction of travel when entering the intersection, the facility whose name was presented by the guidance voice was hidden behind other facilities, etc., making it difficult to see, or the facility was closed. In some cases, the facilities themselves have disappeared for such reasons.In such a case, there is a problem that the location of the indicated intersection is difficult to understand because the facilities presented as landmarks cannot be actually found. Was.

The present invention has been made in view of such a point, and an object of the present invention is to provide a navigation system which can easily confirm the position of an intersection.

[0006]

In order to solve the above-mentioned problems, a navigation system according to the present invention provides information on an intersection at which a vehicle is scheduled to pass when guiding a traveling route of the vehicle along a predetermined guidance route. Is guided by the intersection guidance means, and when a predetermined guidance instruction is given after this guidance operation is performed, the own vehicle is located near the intersection to be passed and included in the guidance operation up to that time. The facility information that is not provided is guided by voice using the additional guidance means. If there is more than one landmark facility around the intersection where your vehicle is about to pass, you can obtain information about those facilities as needed, so you can easily and reliably check the location of the intersection Can be.

Also, a voice recognition processing means for performing voice recognition processing on voice uttered by the user, and a facility in which the content of the user's voice is the next candidate based on the recognition result by the voice recognition processing means. It is preferable that the apparatus further includes a guidance instruction determination unit that determines whether the instruction is to provide information guidance. In this case, it is preferable that the additional guidance means guide the facility information one by one every time the guidance instruction determination means makes a positive guidance instruction determination. Thus, the user can successively acquire facility information as the next candidate only by giving a guidance instruction by voice, so that a complicated operation is unnecessary and operability can be improved. In addition, although the amount of information required by the user increases or decreases depending on the number of times the user has traveled at the intersection of interest, the facility information according to the present invention easily obtains the number of facility information considered necessary by the user himself. Therefore, it is possible to perform appropriate intersection guidance in consideration of the driving experience and the like. In addition, the timing determination unit that determines the guidance timing by the above-described intersection guidance unit and the guidance timing regarding the intersection of interest is determined by the timing determination unit. It is desirable to further include a facility search means for searching for a specific facility existing near the intersection of interest when this occurs. In this case, it is desirable that the above-mentioned additional guidance means guides the facility information corresponding to the specific facility searched by the facility search means in a predetermined order. Whenever a vehicle approaches a crossing where the vehicle is about to make a right or left turn and a predetermined guidance timing has arrived, facility information around this crossing is searched each time, so special information is held to guide a plurality of facility information. There is an advantage that there is no need to keep it. Further, it is possible to change the contents of the facility information to be guided only by updating the facility information, not the entire map information.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A navigation system according to an embodiment of the present invention will be described below with reference to the drawings. (1) Configuration of Navigation System FIG. 1 is a diagram showing a configuration of a navigation system according to an embodiment to which the present invention is applied. The navigation system shown in FIG.
D2, a disk reader 3, a voice recognition processor 4, a remote control (remote control) unit 5, a GPS receiver 6, an autonomous navigation sensor 7, a display device 8, and an audio unit 9.

The navigation controller 1 performs various controls for realizing a predetermined navigation operation. The detailed configuration of the navigation controller 1 will be described later. The DVD 2 records various map data necessary for map display, route search, and the like. The disk reading device 3 can load one or a plurality of DVDs 2 and reads map data from any one of the DVDs 2 under the control of the navigation controller 1.
The loaded disk is not necessarily a DVD, but may be a CD. Alternatively, both a DVD and a CD may be selectively loaded.

The speech recognition processing device 4 includes a microphone, a dictionary for speech recognition, and the like, and performs predetermined speech recognition processing on a speech signal collected and output by the microphone to be used. The character string corresponding to the voice uttered by the person is specified. The remote control unit 5 includes a search key for giving a route search instruction, a route guidance mode key used for setting a route guidance mode, a destination input key, left / right / up / down cursor keys, a map reduction / enlargement key, and a cursor on the display screen. Various operation keys such as a setting key for fixing an item at a position are provided, and an infrared signal corresponding to an operation state of the key is transmitted to the navigation controller 1.

The GPS receiver 6 receives radio waves transmitted from a plurality of GPS satellites, performs three-dimensional positioning processing or two-dimensional positioning processing, and calculates the absolute position and direction of the vehicle (vehicle direction is the current Is calculated based on the own vehicle position and the own vehicle position one sampling time ΔT before), and these are output together with the positioning time. The autonomous navigation sensor 7 includes an angle sensor such as a vibrating gyroscope that detects the vehicle rotation angle as a relative direction, and a distance sensor that outputs one pulse for each predetermined traveling distance. Detect orientation.

The display device 8 displays various images such as map information and intersection information around the vehicle based on the drawing data output from the navigation controller 1. The audio unit 9 includes the navigation controller 1
Based on the voice data output from, the guidance voice and the like regarding the intersection are output.

(2) Contents of Map Data Next, details of the map data recorded on the DVD 2 will be described. The map data recorded on the DVD 2 is in units of rectangular figures separated by predetermined longitude and latitude, and the map data of each figure is specified by specifying a figure number and can be read out. It becomes possible. The map data for each map includes a "drawing unit" composed of various data required for map display, and a "road unit" composed of various data necessary for processing such as map matching, route search, and route guidance. An “intersection unit” composed of detailed data such as an intersection is included.

The above-mentioned drawing unit includes facility detailed data in which information on these facilities is stored corresponding to various facilities included in the figure. FIG. 2 is a diagram showing the contents of the facility detail data. As shown in the figure, the facility detail data prepared for each of the various facilities includes (1) “facility type” indicating the genre to which the facility belongs (for example, “bank” or “convenience store”). (2) “facility name character string” representing the name of the facility, (3) “longitude / latitude” representing location information of the facility,
(4) A “mark image storage position” indicating a storage position of image data necessary to display a mark indicating a facility position on a map is included.

(3) Details of Navigation Controller 1
Detailed Configuration Next, a detailed configuration of the navigation controller 1 shown in FIG. 1 will be described. The navigation controller 1 includes a map buffer 10, a map readout control unit 12, a map drawing unit 14, a VRAM 16, an intersection guidance unit 18, an image synthesis unit 20, a vehicle position calculation unit 30, a route search processing unit 32, a guidance route memory 34, and guidance. It includes a route drawing unit 36, a guidance instruction determination unit 40, an input processing unit 42, an operation screen generation unit 44, and a mark image drawing unit 46.

The map buffer 10 includes the disk reading device 3
Is to temporarily store the map data read from the DVD2. The map reading control unit 12 outputs a request to read map data in a predetermined range to the disk reading device 3 based on the own vehicle position calculated by the vehicle position calculating unit 30, a request from the input processing unit 42, and the like.

The map drawing section 14 creates map drawing data necessary for display based on the map data stored in the map buffer 10. The VRAM 16 stores the map drawing data created by the map drawing unit 14 and the guide route drawing data created by the guide route drawing unit 36.

The intersection guidance section 18 provides guidance on an intersection approaching the vehicle by image display and voice output, and includes a guidance timing determination section 50 and a facility search section 5.
2. It includes a basic information guide section 54 and an additional information guide section 56. The guidance timing determination unit 50 determines whether or not the intersection included in the guidance route has approached within a predetermined distance from the vehicle position. Each of the information guide unit 54 and the additional information guide unit 56 is notified.

The facility search section 52 searches for facility detailed data on various facilities existing around the intersection where the vehicle is approaching, that is, the intersection to be guided (hereinafter, referred to as "guide intersection"). , A facility list with a predetermined priority is created. FIG. 3 is a diagram illustrating an example of a facility list created by the facility search unit 52. In the present embodiment, for example, the order of facilities that are preferentially extracted according to the facility type, such as a bank, a convenience store, a fast food store, a family restaurant, a gas station,..., Is set in advance. The various facilities existing around the guidance intersection are extracted on the basis of, and prioritized and listed. In the example shown in FIG. 3, “A bank”, “B mart (name of convenience store)”, “C burger (name of fast food restaurant)”, “D restaurant (name of family restaurant)” are arranged in descending order of priority. The names of various facilities are extracted and a facility list is created. When there are a plurality of facilities of the same type, the priority order is determined in order from the closest distance from the guidance intersection.

The basic information guide section 54 creates drawing data and audio data for guiding basic information on a guide intersection. Specifically, in the present embodiment, (1) display of an enlarged view of an intersection including an arrow indicating the traveling direction of the own vehicle and marks indicating various facilities serving as landmarks, and (2) a display from the own vehicle position to the guidance intersection. Guidance voice including distance and the name of the facility with the highest priority in the facility list described above (for example, "300 m ahead, turn right. Mark is Bank A")
, Etc.) to provide basic information about the guidance intersection. The basic information shown in the above (1) and (2) corresponds to the contents of the intersection guidance that has been conventionally performed.

The additional information guide section 56 creates voice data for guiding additional information on the guidance intersection. Specifically, the additional information guide unit 56 provides an instruction (guidance instruction) that the basic information guided by the above-described basic information guide unit 54 lacks information and that additional information is desired.
Is given by the user, the facility having the second or subsequent priority included in the facility list described above is sequentially selected, and a process of adding and outputting a guidance voice corresponding to this facility is performed. For example, in the facility list shown in FIG. 3 described above, when a guidance instruction is given after guidance based on Bank A, which is the first facility, the facility with the second priority is given. B mart is selected and "B
Is a landmark. "

Further, after the guidance is given corresponding to the facility with the second priority, if the user further gives a guidance instruction, the C burger which is the facility with the third priority is selected. And a guidance voice such as "C burger is a landmark" is output. Similarly, guidance is performed in the same manner as in the above-described procedure every time a guidance instruction is given from a user also to facilities with fourth and subsequent priorities. In this embodiment, information that is sequentially added and guided according to the guidance instruction given by the user is referred to as “additional information” in the present embodiment.

The image synthesizing section 20 includes map drawing data read from the VRAM 16 corresponding to the position of the vehicle, the intersection guide section 18, the operation screen generating section 44, and the mark image drawing section 4.
6, superimpose the drawing data output from each of them, perform image synthesis, and output the synthesized drawing data to the display device 8.

The vehicle position calculating section 30 calculates the position of the own vehicle based on the detection data of the GPS receiver 6 and the autonomous navigation sensor 7, and when the calculated own position is not on the road of the map data. Then, a map matching process for correcting the own vehicle position is performed. The route search processing unit 32 searches for a traveling route that connects a preset destination and departure place under predetermined conditions. For example, under various conditions such as the shortest distance and the shortest time, the traveling route with the minimum cost is set as the guidance route. The guidance route data set by the route search processing unit 32 in this way is stored in the guidance route memory 34.

The guide route drawing section 36 is provided with the route search processing section 3
2 to select the data included in the map area drawn in the VRAM 16 at that time from the data of the guidance route set by the method 2 and stored in the guidance route memory 34, and to superimpose the guidance route on the map image. To create the guide route drawing data.

The guidance instruction judging section 40 includes an intersection guidance section 18
It is determined based on the character string output from the voice recognition processing device 4 whether or not the user has input a predetermined guidance instruction by voice in response to the predetermined intersection guidance performed by the user. Specifically, in the present embodiment, (1) “Other landmarks are
"?" Or "Other?" Or other words that directly require additional information, and (2) "Invisible" or "Not Found"
When any of the words indicating a negative opinion on the currently provided information is uttered by the user and the corresponding character string is output from the speech recognition processing device 4, the guidance instruction determination unit 40 Is determined to have been input.
The determination result by the guidance instruction determination unit 40 is input to the input
Is output to

The input processing section 42 outputs an instruction for performing an operation corresponding to various operation instructions input from the remote control unit 5 to each section in the navigation controller 1 and, when an operation screen needs to be displayed. In
The operation screen generating unit 44 is instructed to that effect. Also,
The input processing unit 42, when a determination result indicating that a predetermined guidance instruction is input from the guidance instruction determination unit 40 is output,
An instruction is sent to the intersection guide section 18 to guide additional information.

The operation screen generator 44 creates drawing data for displaying the operation screen in accordance with an instruction from the input processor 42. The mark image drawing unit 46 creates drawing data for displaying a vehicle position mark at the own vehicle position after the map matching processing has been performed.

The audio section 9 and the basic information guide section 54 serve as intersection guide means, the audio section 9 and the additional information guide section 56 serve as additional guide means, and the voice recognition processing device 4 serves as a voice recognition processing means. The unit 40 corresponds to the guidance instruction determination unit, the guidance timing determination unit 50 corresponds to the timing determination unit, and the facility search unit 52 corresponds to the facility search unit.

(4) Operation of Navigation System The navigation system of the present embodiment has such a configuration. Next, an operation procedure for performing intersection guidance will be described in detail. FIG. 4 is a flowchart showing an operation procedure of the navigation system when performing a predetermined intersection guidance during route guidance. Here, it is assumed that a predetermined departure place and destination are specified by the user in advance, and a guidance route corresponding to these is searched and stored in the guidance route memory 34.

When a user instructs to start route guidance, a route guidance operation along a predetermined guidance route is started (steps 100 and 101). In particular,
A guide route is drawn on the map image by the guide route drawing unit 36, and a predetermined vehicle position mark is drawn at the current position of the own vehicle by the mark image drawing unit 46.

In parallel with such a predetermined route guidance operation, the route search processing unit 32 reads data specifying the next intersection on the guidance route from the guidance route memory 34,
It is determined whether the vehicle has reached the destination (step 1)
02). If the vehicle has reached the destination, an affirmative determination is made in step 102, and the route guidance operation ends.

If the vehicle has not reached the destination,
A negative determination is made in step 102, and the route search processing unit 3
2 outputs the read data (data specifying the next intersection) to the intersection guide unit 18. Next, based on the data received from the route search processing unit 32 and the vehicle position calculated by the vehicle position calculation unit 30, the guidance timing determination unit 50 in the intersection guidance unit 18 is within a predetermined distance from the vehicle position. It is determined whether or not there is a guidance intersection (step 103). If there is no guidance intersection, step 10
A negative determination is made in step 3, and the process returns to step 101, and the predetermined route guidance operation is repeated.

If there is a guidance intersection within a predetermined distance from the position of the vehicle, an affirmative determination is made in step 103, and the fact is determined from the guidance timing determination unit 50 to the facility search unit 52, the basic information guidance unit 54, and the additional information guidance. Each of the units 56 is notified. The facility search unit 52 that has received the notification searches for various facilities existing around the guidance intersection using the map data stored in the map buffer 10 and creates the above-described facility list as shown in FIG. 3 ( Step 104).

When the facility list is created, the basic information guide unit 54 refers to the facility list and determines whether there is a facility to be guided (step 105). There are no facilities to be guided around the guidance intersection,
If no facility is included in the facility list, a negative determination is made in step 105 and the basic information guide unit 54
Performs a process of guiding intersection information that does not include information on facilities (step 106). Specifically, the basic information guide unit 54 outputs a guidance voice (for example, “300 m ahead, right turn” or the like) including the distance to the guidance intersection and the traveling direction of the vehicle.

If there is a facility to be guided, an affirmative determination is made in step 105, and the basic information guide unit 54 performs a process of guiding basic information on the guide intersection (step 107). Specifically, as described above, the basic information guide unit 54 displays the intersection enlarged view including the predetermined information, and corresponds to the facility having the highest priority included in the facility list, to the guide intersection. The guidance voice including the distance, the traveling direction of the vehicle, and the name of the facility is output.

When the guidance of the basic information is performed, the additional information guide unit 56 is instructed to provide additional information on the guidance intersection based on the presence or absence of the instruction from the input processing unit 42 (the guidance instruction is issued). Is determined (step 108). When the guidance instruction is given, an affirmative determination is made in step 108, and the additional information guidance unit 56 determines whether or not there is a facility which has not been guided yet in the facilities of the second or later priority among the facilities included in the facility list. Is determined (step 109).

If there is a facility that has not been guided yet, an affirmative determination is made in step 109, and the additional information guide unit 56 selects a facility that has not been guided and has a higher priority, and assigns this facility to this facility. A process for guiding the corresponding additional information is performed (step 110). Specifically, as described above, the additional information guidance unit 56 outputs a predetermined guidance voice including the name of the selected facility. Thereafter, the additional information guide unit 56 returns to step 108 and repeats the processing after determining whether or not a guide instruction has been given.

If all facilities included in the facility list have been guided, a negative determination is made in step 109 described above, and the additional information guide unit 56 sends a notification that there is no facility to be guided. Perform (step 111).
More specifically, the additional information guide unit 56 outputs a sound such as “There is no other facility to provide guidance”. Thereafter, the additional information guide unit 56 returns to step 108 described above, and repeats the subsequent processing.

If no guidance instruction for additional information is given, a negative determination is made in step 108 described above, and the additional information guidance unit 56 determines whether or not the own vehicle has passed the guidance intersection (step 108). Step 112). In particular,
The positional relationship between the own vehicle position and the guidance intersection is checked by the guidance timing determination unit 50. When the own vehicle passes through the guidance intersection, the guidance timing determination unit 5
Since this is notified from 0, the additional information guide unit 56 makes a determination in step 112 based on the presence or absence of this notification.

If the vehicle has not passed through the guidance intersection, a negative determination is made in step 112, and the additional information guidance unit 56 returns to step 108 and repeats the subsequent processing. When the vehicle has passed through the guidance intersection, a positive determination is made in step 112 described above.
Returning to step 101, the predetermined route guidance operation is repeated.

FIG. 5 is a diagram for explaining the situation at the time of guidance at an intersection. In the figure, a display example of an intersection guide map in which the own vehicle position is indicated by the vehicle position mark 100 and the traveling direction of the own vehicle is highlighted with a bold line on the map is shown. In addition, the guidance intersection 1 which is the intersection where the car is going to pass
In the vicinity of 10, facility marks 120a-
120d is displayed. For example, the facility mark 120
a corresponds to bank A, facility mark 120b corresponds to B mart, facility mark 120c corresponds to C burger, facility mark 120d corresponds to D restaurant, and the facility list shown in FIG. 3 described above is created corresponding to these facilities. Shall be performed. At this time, for example, the intersection guidance corresponding to the guidance instruction from the user is performed in the following manner. In the following description, "N" is a navigation system,
“U” represents a user.

[Example of Intersection Guidance] N: "Turn right 300m ahead. The sign is Bank A."
… (Guidance of basic information) U: “What other landmarks?”… (Guidance instructions) N: “Then, Bmart is a landmark.”… (Guidance of additional information) U: “Invisible.” … (Guidance instruction) N: “C burger is a landmark.”… (Guidance of additional information) As described above, in the navigation system of the present embodiment, guidance relating to the intersection (guidance intersection) that the vehicle is going to pass from now on. Is performed by image display and voice output, in response to a request from the user, a facility that has not been guided yet is selected from various facilities existing around the guidance intersection and the name is guided by voice. Therefore, even if the guided facilities include those that are difficult to see and those that do not already exist, the facility of the next candidate can be guided one after another, and the position of the intersection can be confirmed easily and reliably. In particular, in the present embodiment, since a guidance instruction requesting guidance of the facility of the next candidate can be input by voice, complicated operation is unnecessary, and operability can be improved. In addition, since guidance of facilities is provided in response to a request from the user, appropriate intersection guidance can be provided according to the amount of information required by the user.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, in the embodiment described above,
Although the predetermined guidance instruction requesting guidance of additional information is input by voice, the guidance instruction may be input by pressing a predetermined operation key provided on the remote control unit 5 or the like. In this case, since the voice recognition processing device 4 can be omitted, a navigation system to which the present invention is applied can be realized at low cost.

In the above-described embodiment, when there is no facility to which the additional information is to be guided, the notification that "there is no facility to be guided" is output by voice, but the notification is included in the facility list. After having guided through the facilities to be
These facilities may be provided again in descending order of priority.

In the above-described embodiment, when providing additional information, the name of the next candidate facility is guided one by one every time a predetermined guidance instruction is given from the user. The names of a plurality of facilities may be included in one guidance as candidates. Specifically, if the facility list having the contents shown in FIG. 3 described above is created and a predetermined guidance instruction is given after the guidance of the basic information is performed, for example, “ B-mart and C-burger are the landmarks. "

[0047]

As described above, according to the present invention, when there are a plurality of landmark facilities and the like around an intersection through which the vehicle is going to pass, information on those facilities is provided as necessary. Since the information can be obtained, the position of the intersection can be easily and reliably confirmed. In addition, since facility information serving as the next candidate can be acquired one after another in response to the guidance instruction by voice, a complicated operation is unnecessary, and operability can be improved.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a configuration of a navigation system according to an embodiment.

FIG. 2 is a diagram showing the contents of facility detailed data.

FIG. 3 is a diagram illustrating an example of a facility list created by a facility search unit.

FIG. 4 is a flowchart showing an operation procedure of the navigation system when performing intersection guidance.

FIG. 5 is a diagram illustrating a state at the time of intersection guidance.

[Explanation of symbols]

 Reference Signs List 1 navigation controller 4 voice recognition processing device 8 display device 9 audio unit 10 map buffer 14 map drawing unit 18 intersection guidance unit 20 image synthesis unit 30 vehicle position calculation unit 32 route search processing unit 34 guidance route memory 36 guidance route drawing unit 40 guidance Instruction determination unit 42 Input processing unit 50 Guidance timing determination unit 52 Facility search unit 54 Basic information guidance unit 56 Additional information guidance unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification FI FI Theme Court ゛ (Reference) // G01S 5/14 G01S 5/14 (72) Inventor Hideaki Takeda 1-1-1 Nishigotanda, Shinagawa-ku, Tokyo No. 8 Alpine, Inc. F-term (Reference) 2C032 HC08 HD04 2F029 AA02 AB01 AB07 AB13 AC02 AC09 AC16 AC18 5H180 AA01 BB13 CC02 CC12 FF04 FF05 FF22 FF25 FF32 FF38 5J062 AA01 AA03 BB01 CC07 FF04 FF05 H07

Claims (3)

[Claims] 1. A navigation system for guiding a traveling route of a vehicle along a predetermined guidance route, comprising: an intersection guidance unit for guiding information of an intersection at which the vehicle is to pass by voice; and a guidance operation by the intersection guidance unit. When a predetermined guidance instruction is given after the is performed, additional guidance means located near the intersection and guiding the facility information that is not included in the guidance operation up to that point by voice is provided. Navigation system. 2. A voice recognition processing means for performing voice recognition processing on voice uttered by a user according to claim 1, wherein the content of the voice of the user is determined based on a recognition result by the voice recognition processing means. Guidance instruction determining means for determining whether or not the instruction of the facility information as the next candidate is to be provided.The additional guidance means is further configured such that a positive guidance instruction determination is made by the guidance instruction determining means. A navigation system that guides the facility information one by one each time the navigation is performed. 3. The information processing device according to claim 1, wherein a timing judging means for judging a guidance timing by said intersection guidance means; And a facility search means for searching for a specific facility to be searched for, wherein the additional guidance means guides the facility information corresponding to the specific facility searched by the facility search means in a predetermined order. Navigation system.