JP2019184358A - Navigation device, method for controlling navigation device, and control program for navigation device - Google Patents

Abstract

To conduct a route guide properly without irritating a user.SOLUTION: The present invention includes a route detection unit 6, a familiarity level determination unit 8, a display unit 2, and a display control unit 11. The display control unit 11 makes route guide information obtained through the route detection unit 6 displayed in the display unit 2 when the familiarity level determination unit 8 has determined that the familiarity is low, and stops the display of the route guide information in the display unit 2 when the familiarity level determination unit has determined that the familiarity is high. The display control unit 11 resumes the stopped display of the route guide information in the display unit 2 according to the route information on regions around the current position.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a navigation device, a navigation device control method, and a navigation device control program.

Conventionally, in a car navigation device that is a vehicle navigation device, a travel route to a destination is searched by a route search instruction. Furthermore, the car navigation device guides the route so as to move to the destination by the searched movement route according to the instruction of the route guide.
In this route guide, when the car navigation device approaches a point where a right turn, a left turn, a lane change or the like is required (for example, an intersection or an interchange), the route guide information of this point is displayed by a turn-by-turn method or the like to display a travel route. indicate. In addition, instructions such as right turn and left turn are notified by voice.

  With regard to such a navigation device, Patent Document 1 discloses, based on the past number of passages of a traveling road, whether or not the traveling road is an unfamiliar road, and the traveling road is unfamiliar. However, a configuration for guiding a route is disclosed.

JP 2006-313085 A

By the way, although the route guide is useful, the travel route may include a familiar road, and such a familiar road may be annoying.
As a result, in this type of navigation device, it is desired that route guidance be performed appropriately without causing inconvenience.

  As one method for solving this problem, it is conceivable to apply the method disclosed in Patent Document 1.

However, although the number of times of passing by the vehicle is small, there are cases where the road passes many times on foot. On the other hand, there are cases where the number of times of passage is large, but it has not passed for a long time.
As a result, there is still a problem that is not sufficient in practice if the route guide is simply based on the number of passes.

  The present invention has been made in consideration of the above points, and proposes a navigation device, a navigation device control method, and a navigation device control program capable of providing appropriate route guidance without causing inconvenience. Objective.

In order to solve the problem, a navigation device according to the invention of claim 1 includes:
A route detection unit that detects a travel route to the destination and outputs route guide information in the travel route;
A familiarity determination unit that calculates and determines a familiarity indicating a degree of familiarity with respect to the road in the travel route;
A display unit for displaying the route guide information;
A display control unit for controlling the display unit,
The display control unit
According to the determination result by the familiarity determination unit,
When familiarity is low, the route guide information by the route detection unit is displayed on the display unit,
When the degree of familiarity is high, the display of the route guide information on the display unit is stopped.

  According to the configuration of claim 1, the degree of familiarity is calculated for the road on the travel route, and when the degree of familiarity is low, the route guide information is displayed to provide unnecessary route guide information. Therefore, the necessary route guide information can be provided, and thereby route guidance can be appropriately performed without causing annoyance.

A navigation device according to the invention of claim 2 comprises:
In the configuration of claim 1,
The display control unit
The display of the canceled route guide information on the display unit is resumed according to the road information around the current position.

  According to the configuration of claim 2, when troubles that the user does not intend such as construction, accident occurrence, traffic regulation, etc. occur, it is more appropriate to display route guide information regardless of familiarity Route guide information can be provided.

A navigation device according to the invention of claim 3 is provided.
In the configuration of claim 1 or claim 2,
The display control unit
In response to an instruction from the user, the display of the route guide information on the display unit is stopped.

The navigation device according to the invention of claim 4
In the configuration of any one of claims 1, 2, and 3,
The display control unit
In response to an instruction from the user, the display of the canceled route guide information on the display unit is resumed.

According to the structure of Claim 3 and Claim 4,
Regardless of the degree of familiarity, the provision of route guide information can be stopped or the provision of route guide information can be resumed according to a user instruction, and the usability can be further improved.

The navigation device according to the invention of claim 5
In the configuration of any one of claims 1, 2, 3, and 4,
The route detection unit
Based on the current position information, an error in the route from the moving route is detected, and when an error in the route from the moving route is detected, a route to return to the original moving route is detected,
The display control unit
The display unit displays route guide information for a route that returns to the original travel route detected by the route detection unit.

According to the configuration of claim 5,
If the road is mistaken, the route guide information can be provided more appropriately by providing the route guide information by the route returning to the original route.

The navigation apparatus control method according to the invention of claim 6 comprises:
A route detection step for detecting a travel route to the destination and outputting route guide information on the travel route;
Familiarity determination step for calculating and determining a familiarity indicating the degree of familiarity with respect to the road in the travel route;
A display control step for controlling the display of the display unit,
The display control step includes:
According to the determination result in the familiarity determination step,
When familiarity is low, the route guide information by the route detection unit is displayed on the display unit,
When the degree of familiarity is high, the display of the route guide information on the display unit is stopped.

  According to the configuration of the sixth aspect, the degree of familiarity is calculated for the road on the travel route, and when the degree of familiarity is low, the route guide information is displayed to provide unnecessary route guide information. Therefore, the necessary route guide information can be provided, and thereby route guidance can be appropriately performed without causing annoyance.

The invention of claim 7
In a control program for a navigation device that executes a predetermined processing procedure by execution in an arithmetic processing circuit, the processing procedure includes:
A route detection step for detecting a travel route to the destination and outputting route guide information on the travel route;
Familiarity determination step for calculating and determining a familiarity indicating the degree of familiarity with respect to the road in the travel route;
A display control step for controlling the display of the display unit,
The display control step includes:
According to the determination result in the familiarity determination step,
When familiarity is low, the route guide information by the route detection unit is displayed on the display unit,
When the degree of familiarity is high, the display of the route guide information on the display unit is stopped.

  According to the structure of claim 7, unnecessary route guide information is provided by calculating the degree of familiarity indicating the degree of familiarity with respect to the road on the moving route and displaying the route guide information when the degree of familiarity is low. Can be provided, and necessary route guide information can be provided, thereby making it possible to appropriately guide the route without making it bothersome.

  According to the navigation device, the navigation device control method, and the navigation device control program of the present invention, it is possible to appropriately guide the route without feeling inconvenience.

It is a functional block diagram which shows the navigation apparatus which concerns on embodiment of this invention. It is a figure where it uses for description of operation | movement of the navigation apparatus of FIG. It is a flowchart which shows the process sequence in the navigation apparatus of FIG. It is a flowchart which shows the continuation of FIG.

[First Embodiment]
FIG. 1 is a functional block diagram showing a navigation device according to the first embodiment of the present invention.
Although this navigation device 1 is a car navigation device that is installed and used in a vehicle, the present invention is applied to a portable information terminal typified by a smartphone, and the navigation device 1 is carried as a navigation device for a vehicle when carrying the vehicle and boarding the vehicle. It can be widely applied even when used.

The navigation device 1 includes a display unit 2, a destination information acquisition unit 3, a current position detection unit 4, a map information acquisition unit 5, a route detection unit 6, a history information acquisition unit 7, a familiarity determination unit 8, and a road information acquisition unit. 9. A display switching unit 10 and a display control unit 11 are provided.
The navigation device 1 includes these functional blocks by executing a control program for the navigation device 1 using an arithmetic processing circuit.
Thereby, the processing procedure by execution of this control program is as follows: destination information acquisition unit 3, current position detection unit 4, map information acquisition unit 5, route detection unit 6, history information acquisition unit 7, familiarity determination unit 8, road information Destination information acquisition step, current position detection step, map information acquisition step, route detection step, history information acquisition step, familiarity level, respectively, corresponding to the acquisition unit 9 and the display control unit 11 A determination step, a road information acquisition step, and a display control step are provided.

  The display unit 2 is a part used for displaying map information, route guide information, and the like. Various image display panels, head-up displays, head-mounted displays, and the like can be applied to the display unit 2.

  The destination information acquisition unit 3 is a part that receives a destination setting. For example, the destination information acquisition unit 3 displays a menu screen on the display unit 2 and accepts an operation of the touch panel, thereby accepting a destination setting and outputting destination information for specifying the destination. Note that various methods can be applied for setting the destination, such as by voice input.

  The current position detection unit 4 is a part that acquires current position information that identifies the current position. For example, when acquiring current position information using GPS (Global Positioning System), various methods are widely applied. Can do.

  The map information acquisition unit 5 is a part that acquires map information used when setting a destination, map information used for searching for a moving route, information used for a route guide, and the like. By accessing the storage and further accessing the corresponding server by connecting to the Internet, these pieces of information are acquired.

The route detection unit 6 moves from the current position to the destination based on the current position information detected by the current position detection unit 4 and the destination information acquired by the destination information acquisition unit 3 according to a passenger's instruction. The route is searched, and the moving route is determined according to the passenger's instruction. The navigation device 1 displays this movement route on the display unit 2 with reference to the current position.
The route detection unit 6 appropriately acquires route guide information from the map information acquisition unit 5 and outputs the route guide information in accordance with a route guide instruction from the passenger. Here, the route guide information is, for example, map information in the vicinity of the current position to be used for the route guide by turn-by-turn method, and information for instructing traveling along the moving route on the map based on this map information. As a result, the navigation device 1 displays this route guide information on the display unit 2 when approaching a point where a right turn, left turn, lane change or the like is necessary, and guides the driver so that the driver can travel without fail according to the travel route. can do.

Furthermore, the route detection unit 6 determines whether or not the travel route is correctly traveling based on the current position information by the erroneous route processing unit 6A, and detects an error in the route from the travel route.
When a path error is detected in this way, the route detection unit 6 detects a route that returns to the original travel route by searching for a travel route from the current position to the nearest travel route.
Further, the route detection unit 6 acquires route guide information from the map information acquisition unit 5 and outputs the route returning to the original travel route.

The history information acquisition unit 7 acquires and outputs information on the behavior history of the passenger. Here, in the navigation device 1, the current position of the vehicle on which the navigation device 1 is mounted is sequentially recorded and recorded in the storage, and the history information acquisition unit 7 acquires action history information from this recording. Moreover, such action history can be acquired as so-called big data by recording the position information of the portable information terminal carried by the passenger, and the history information acquisition unit 7 collects and processes such big data. Also get action history information.
Such an action history is not limited to the case of using the current position information, and can be acquired by using various information such as SNS recording and surveillance camera recording.

The familiarity determination unit 8 calculates the familiarity indicating the degree of familiarity with respect to the road on the travel route, based on the action history information acquired by the history information acquisition unit 7.
Specifically, the familiarity determination unit 8 detects a visit history of a passenger to the point for each point (for example, an intersection, an interchange, etc.) related to the route guide information in the travel route. Furthermore, for each point, the points according to the type of visit are weighted and added using a weighting coefficient that gradually decreases as the time of the visit goes back to the past from the current point in time, so that you can become familiar with each point related to the route guide information. Calculate the degree.

Specifically, when the behavior history of the mobile terminal and the behavior history held in the vehicle match, the movement history of the vehicle according to the behavior history is determined as the movement history in a state where the passenger has boarded the vehicle. can do. As a result, in the form of a visit to the corresponding point, it can be determined that the vehicle on which the navigation device 1 is mounted is visited.
If the history of the vehicle and the history of the mobile terminal do not match, it is determined that the movement is due to walking or other vehicles such as bicycles and buses, based on the speed of coordinate changes based on the behavior history of the mobile terminal. be able to.
Further, it is possible to determine movement by public transportation based on whether or not there is a stagnation at a specific location (for example, a station or a bus stop) of the current position due to such movement.

Furthermore, when the vehicle is driven and visited many times, it can be determined that this point has a high degree of familiarity.
Further, when visiting by foot, it is not as much as when driving a vehicle, but when visiting repeatedly, it can be determined that the point is well known.
As a result, for example, when the vehicle is visiting while driving a vehicle, the score is 5 points, and when the vehicle is visiting on foot, the score is 2 points. Can be calculated.

Even if you have visited repeatedly, it may have been a considerable number of years since the last visit. In this case, although you were familiar enough in the past, at present, the degree of familiarity is low. Judgment can be made.
On the contrary, although the number of visits is small, there are cases where the visits are concentrated in the past few months. In this case, it can be determined that the degree of familiarity is high.
As a result, the degree of familiarity can be appropriately determined by calculating the familiarity by weighting and adding the weighting coefficients whose values gradually decrease as the time of the visit goes back from the present time to the past.

It should be noted that the frequency at which the line of sight is shifted to the display of the route guide information is reduced at points where people are familiar. As a result, the degree of familiarity can also be calculated by changing the line of sight.
Further, at a point where the user is not familiar, the person is tense, and thus the degree of familiarity can also be calculated from biological information (for example, a pulse, an electroencephalogram, etc.) capable of measuring the tension.
As a result, various methods can be widely applied in calculating the degree of familiarity.

In this embodiment, as will be described later, the navigation device 1 switches display / non-display of the route guide information by the operation of the passenger by the display switching unit 10 and switches the display / non-display of the route guide information. It is configured to record as history information, and the familiarity determination unit 8 also uses this display / non-display history to calculate familiarity.
More specifically, the weight of the level of knowledge that is gradually reduced from the current point in time to the past, by marking the display and non-display values so that the familiarity calculated by the visit is biased to the negative and positive sides, respectively. The degree of familiarity is finally calculated by weighted addition using coefficients.
In this way, route guide information can be provided more appropriately.

  The familiarity determination unit 8 determines the familiarity measured in this way based on a predetermined determination criterion, and outputs a determination result. Note that this determination criterion may be varied depending on the point, for example, at a difficult-to-understand intersection, the determination criterion may be increased to easily obtain a determination result that the degree of familiarity is low. Still further, for example, it may vary depending on the age of the driver, the number of years of driving, and the like.

  The road information acquisition unit 9 acquires and outputs road information around the current position. Here, the road information is various information that hinders the smooth running of the vehicle, such as the section under construction, the construction period, the occurrence of an accident, traffic restrictions, etc., and the road information acquisition unit 9 is connected to the network to obtain road information. To get.

  The display switching unit 10 is a part that accepts switching of display on the display unit 2 for route guide information, and includes a pressing operator or the like.

The display control unit 11 is a part that controls display on the display unit 2.
The display control unit 11 starts to operate when the power supply from the vehicle on which the navigation device 1 is mounted is started, and the current position information detected by the current position detection unit 4 is passed through the map information acquisition unit 5. Map information in the vicinity of the current position is acquired, and map information in the vicinity of the current position is displayed on the display unit 2.
Further, the display of this map information is switched to the display of the destination setting screen by operating a predetermined operator, and the destination information acquisition unit 3 acquires the destination information. When the destination information is acquired in this way, the route detection unit 6 is instructed to search for a route, and the searched movement route is displayed on the display unit 2. In addition, the travel route is displayed in this manner, the travel route is re-searched according to the passenger's instruction, and the travel route setting is accepted through a series of these processes.

  When the travel route is set in this way, the selection of the route guide is accepted according to the passenger's instruction. When the route guide is selected, the route detection unit 6 sequentially acquires the route guide information and the current position information. The road information related to the travel route is acquired from the road information acquisition unit 9. Further, a determination result is obtained by the familiarity determination unit 8, and this route guide information is sequentially displayed on the display unit 2 in accordance with the determination result.

  Providing route guide information on a road that is well known here may seem troublesome. However, route guide information on roads that are not well understood can prevent mistakes in the road, and can pass smoothly through intersections related to the route guide.

Thereby, based on the determination result of the familiarity determination unit 8, the display control unit 11 displays the route guide information on the display unit 2 when the familiarity is low, and further provides the route guide by voice.
On the contrary, when the degree of familiarity is high, the provision of route guide information by the display unit 2 is stopped, and further, the route guide by voice is stopped.
In this case, the degree of familiarity is determined by three levels of “low”, “medium”, and “high”. When the degree of familiarity is “low”, route guide information is provided by voice and display, and the degree of familiarity is “medium”. ", The route guide by voice may be stopped, and if the degree of familiarity is" high ", provision of the route guide may be stopped by both voice and display. In this way, usability can be improved by more appropriately controlling the provision of the route guide.

FIG. 2A is a chart for explaining the control of the display unit 2 based on the result of determination of familiarity.
In this example, the case of heading to a destination using an expressway from home is shown, and the display of route guide information is shown by a navigation display.
In this example, the familiarity is determined to be “high” in the vicinity of the home, through the urban area, and the highway, because of familiarity, and as a result, the provision of the route guide information is stopped (indicated by OFF).
In addition, on highways, familiarity is determined to be “high” due to familiarity to the middle, etc., and familiarity is determined to be “low” from the middle, thereby displaying route guide information from the middle (Indicated by ON).
Further, in the urban area and the vicinity of the destination after getting off the expressway, the degree of familiarity is determined to be “low”, and the route guide information is displayed.
Thus, route guide information can be provided appropriately without causing bothersomeness.

In this way, the display control unit 11 controls the provision of the route guide information based on the familiarity, so that the road information acquired by the road information acquisition unit 9 is used in the vicinity of the current position. If an accident occurs, or if traffic restrictions are in place, the display of the route guide information that was canceled due to familiarity is resumed.
In other words, in these cases, it is judged that smooth traffic is often hindered in the vicinity of the current position, so that even if the degree of familiarity is high, the route guide information is displayed to give the passenger a sense of security and definitely boarding The route guide information can be provided more appropriately.

Further, the display control unit 11 switches the display of the display unit 2 by the display switching unit 10 so as to provide the route guide information in this way.
That is, when the display switching unit 10 is operated in a state where the route guide information is provided, the display control unit 10 displays the route guide information even if the route guide information is to be displayed due to low familiarity. The display at 2 is stopped.
On the other hand, when the display switching unit 10 is operated in a state where the route guide information is not provided, the display of the route guide information that has been stopped due to high familiarity is resumed.

  In addition, the display switching unit 10 switches the display and non-display of the route guide information according to the passenger's instruction, and the display of the canceled route guide information is resumed by the operation of the display switching unit 10 again. On the other hand, the display of the route guide information is stopped by the re-instruction of the passenger by the display switching unit 10.

The display and non-display of the route guide information may be continued until the destination is reached, or may be continued until the display switching unit 10 is operated again, and continues for a certain time. You may make it, and it can set variously as needed.
In this way, by switching the display of the route guide information according to the passenger's instruction, the provision of the route guide information can be switched according to the passenger's intention as necessary, and the usability can be further improved.

Further, the display control unit 11 records the display / non-display of the route guide information by the operation of the display switching unit 10 as action history information in the built-in storage, or records as action history information in a server on the network. And make it available for calculation of familiarity.
Thereby, in the navigation apparatus 1, route guide information can be appropriately provided by a so-called self-learning function.

Further, when the error route processing unit 6A of the route detection unit 6 detects an error in the route from the travel route, the display control unit 11 acquires route guide information of the route that returns to the original travel route. The route guide information is displayed on the display unit 2.
Thereby, in the navigation apparatus 1, route guide information can be provided more appropriately.

FIG. 2B is a chart for explaining the control of the display unit 2 when the movement route is incorrect.
In this example, while traveling, it is determined that the degree of familiarity is “high” and the display of the route guide information is stopped, but the route guide information is displayed due to the entry to the wrong road. In this wrong road, the familiarity level is usually judged to be “low”.
When the route guide information returns to the travel route (a known road), the degree of familiarity is determined to be “high” and the display of the route guide information is stopped.

3 and 4 are flowcharts for explaining the processing of the display control unit 11 related to the control of the display unit 2.
The display control unit 11 starts this processing procedure in response to an instruction from the route guide, determines whether or not the point related to the route guide information is a familiar point based on the determination result of the familiarity, and if it is a familiar point, the route guide The display of information is stopped (steps SP1-SP2-SP3 (FIG. 4)), and the route guide information is displayed when the road is not familiar (steps SP1-SP2 (FIG. 4) -SP11 (FIG. 5)).

Further, when the display of the route guide information is stopped in this way and the display switching unit 10 is operated or when it is determined that smooth traffic is hindered by the traffic information, the route guide information is displayed (step SP3). -SP4-SP8 (FIG. 4)).
In addition, when the display switching unit 10 is not operated, or when traffic information that hinders smooth traffic cannot be obtained, the process is switched to a point related to the route guide on the following moving route without displaying the route guide information. (Steps SP3-SP4-SP5-SP6-SP2 (FIG. 4)) and this process is terminated upon arrival of the destination (step SP6-SP7 (FIG. 4)).

  Further, when the display switching unit 10 is operated again by operating the display switching unit 10 or by displaying traffic information, and when the display switching unit 10 is operated again, this process is repeated without displaying the route guide information (step SP8). -SP9-SP3 (FIG. 4)), and further, the processing is switched to the route guide point on the following moving route (step SP9-SP6-SP2 (FIG. 4)), and this processing is terminated upon arrival of the destination (step SP6). -SP7 (FIG. 4)).

Further, when the display switching unit 10 is operated so that the route guide information is displayed based on the determination of familiarity, the display of the route guide information is stopped (steps SP11-SP12-SP14 (FIG. 5)), and then the display is performed. When the switching unit 10 is operated or when it is determined that smooth traffic is hindered by the traffic information, the display of the route guide information is resumed and the process is repeated (steps SP14-SP15 (FIG. 5) -SP2 (FIG. 5). 4)).
Further, route guide information is displayed based on the determination of familiarity, and when the display switching unit 10 is not operated, or when traffic information that prevents smooth traffic cannot be obtained, the route guide information is not continuously displayed. Then, the processing is switched to a point related to the following route guide on the movement route (step SP13 (FIG. 5) -SP6-SP2 (FIG. 4)), and this processing is terminated upon arrival of the destination (step SP6-SP7 (FIG. 5). 4)).

  According to the above configuration, the degree of familiarity indicating the degree of familiarity is calculated and determined for the road on the travel route. If the degree of familiarity is low based on the determination result, the route guide information is displayed and the degree of familiarity is high. In this case, by canceling the display of the route guide information, it is possible to appropriately guide the route without making it bothersome.

  In addition, according to the road information around the current position, even if it is route guide information that has been stopped due to high familiarity, it can be displayed more appropriately by displaying it on the display unit. Can do.

  Furthermore, the display of the canceled route guide information is resumed according to an instruction from the user, and conversely, the display of the route guide information is canceled, so that the usability can be further improved.

  Furthermore, route guide information can be provided more appropriately by detecting a route error from the travel route and displaying the route guide information of the route returning to the original travel route.

[Other Embodiments]
As mentioned above, although the specific structure suitable for implementation of this invention was explained in full detail, this invention can change the structure of the above-mentioned embodiment variously in the range which does not deviate from the meaning of this invention.

  That is, in the above-described embodiment, the case where the present invention is applied to a car navigation device that is a vehicle navigation device has been described. The present invention can be widely applied to various navigation devices such as devices.

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 2 Display part 3 Destination information acquisition part 4 Current position detection part 5 Map information acquisition part 6 Route detection part 6A Error route process part 7 History information acquisition part 8 Familiarity determination part 9 Road information acquisition part 10 Display switching part 11 Display controller

Claims (7)

A route detection unit that detects a travel route to the destination and outputs route guide information in the travel route;
A familiarity determination unit that calculates and determines a familiarity indicating a degree of familiarity with respect to the road in the travel route;
A display unit for displaying the route guide information;
A display control unit for controlling the display unit,
The display control unit
According to the determination result by the familiarity determination unit,
When familiarity is low, the route guide information by the route detection unit is displayed on the display unit,
A navigation device that stops displaying the route guide information on the display unit when the degree of familiarity is high. The display control unit
The navigation device according to claim 1, wherein the display of the stopped route guide information on the display unit is resumed according to road information around the current position. The display control unit
The navigation device according to claim 1 or 2, wherein display of the route guide information on the display unit is stopped by an instruction from a user. The display control unit
The navigation device according to any one of claims 1, 2, and 3, wherein the display of the stopped route guide information on the display unit is resumed in accordance with an instruction from a user. The route detection unit
Based on the current position information, an error in the route from the moving route is detected, and when an error in the route from the moving route is detected, a route to return to the original moving route is detected,
The display control unit
The display unit displays route guide information for a route that returns to the original travel route detected by the route detection unit.
The navigation device according to claim 1, claim 2, claim 3, or claim 4. A route detection step for detecting a travel route to the destination and outputting route guide information on the travel route;
Familiarity determination step for calculating and determining a familiarity indicating the degree of familiarity with respect to the road in the travel route;
A display control step for controlling the display of the display unit,
The display control step includes:
According to the determination result in the familiarity determination step,
When familiarity is low, the route guide information by the route detection unit is displayed on the display unit,
A method for controlling a navigation device that stops displaying the route guide information on the display unit when the degree of familiarity is high. In a control program for a navigation device that executes a predetermined processing procedure by execution in an arithmetic processing circuit, the processing procedure includes:
A route detection step for detecting a travel route to the destination and outputting route guide information on the travel route;
Familiarity determination step for calculating and determining a familiarity indicating the degree of familiarity with respect to the road in the travel route;
A display control step for controlling the display of the display unit,
The display control step includes:
According to the determination result in the familiarity determination step,
When familiarity is low, the route guide information by the route detection unit is displayed on the display unit,
A control program for a navigation device that stops displaying the route guide information on the display unit when the degree of familiarity is high.

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