Indicating control system

Abstract

To change the reliability of the display manner of a travel route to go by an owned vehicle to allow a passenger of the vehicle to notice an unexpected route change that can happen when the passenger is driving in an automatic driving mode or in a driving support mode, thereby reducing the discomfort or the strangeness that the passenger will have to feel.SOLUTION: The present invention includes a vehicle navigation device 100 and a display controller 200. A processor 210 of the display controller 200 determines the driving body of an owned vehicle MB, evaluates or calculates the reliability of route information in at least first map information when the determined driving body of the vehicle MB is a vehicle, and sends the display control information for changing the display manner of the route information of the display unit 140 according to the reliability, to a display controller 150.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a display control system.

Background Art

[0002] Recently, technologies related to autonomous driving including driving assistance technologies have made remarkable progress, and companies from different industries have successively entered the field, attracting great attention from all over the world. Among these, autonomous driving with an autonomous driving level of 3 or higher (including the driving assistance mode at autonomous driving level 3) is approaching the practical stage. In autonomous driving with an autonomous driving level of 3 or higher, for example, it is assumed that a high-definition map composed of the latest information including detailed information on ground features is obtained from a server or the like, and autonomous driving is performed based on that information.

[0003] On the other hand, in a vehicle navigation device, as before, map information is provided using a navigation map stored in an internal storage unit, the optimal route to the destination is searched, etc., and route guidance is performed based on the result (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Here, in the above navigation map, since the update process takes time and cost, it is often updated at fixed intervals. That is, the navigation map has older map information than the high-definition map whose information is updated frequently. Therefore, due to the difference in map information between the navigation map and the high-precision map, there is a problem that when a vehicle is displayed as driving on a road that does not exist on the navigation map, or when the vehicle is displayed as driving in a zigzag manner due to the influence of the map matching function, it gives a sense of discomfort to the vehicle occupants.

[0006] Therefore, in view of the above problems, the present invention has been made, and by changing the display mode of the driving route that the host vehicle intends to travel according to the reliability, the unexpected route changes that occur during the automatic driving mode or the driving support mode are pre-recognized by the vehicle occupants in advance, and an object of the present invention is to provide a display control system that alleviates the sense of discomfort of the vehicle occupants.

Means for Solving the Problems

[0007] Aspect 1; One or more embodiments of the present invention include a storage unit that stores first map information, a position information acquisition unit that acquires the position information of the host vehicle, the position information of the host vehicle, destination information set by the user, and the first map information, a route information setting unit that sets route information based on the above, a display unit that displays the first map information, the route information, and the position information of the host vehicle to the vehicle occupants, and a display control unit that controls the display mode of the information in the display unit, and includes a vehicle navigation device and a display control device, the display control device includes one or more processors and one or more memories communicably connected to the one or more processors, and the one or more processors determine the driving entity of the host vehicle, and when the determined driving entity of the host vehicle is a vehicle, at least calculate the reliability of the route information included in the first map information, Based on number 1 change the display mode of the route information on the display unit according to the reliability, display area information including a display area that includes display mode information, the position of the host vehicle, a route of the first map information, a route of the high-precision map, and a waypoint where the routes intersect and propose a display control system characterized by transmitting display control information to the display control unit.

[0008] Embodiment 2; One or more embodiments of the present invention propose a display control system characterized in that the one or more processors associate the calculated or evaluated reliability with the first map information and store it in the memory.

[0009] Embodiment 3; One or more embodiments of the present invention propose a display control system characterized in that the one or more processors calculate or evaluate the reliability of the route information that does not match the route information in the first map information based on the position information of the host vehicle to be low.

[0010] Embodiment 4; One or more embodiments of the present invention propose a display control system characterized in that the one or more processors calculate or evaluate the reliability of the recommended route information to be low when there are a plurality of recommended route information having the same level of recommendation as the route information based on the position information of the host vehicle.

[0011] Embodiment 5; One or more embodiments of the present invention propose a display control system characterized in that the one or more processors control to continuously display a plurality of the route information having the same level of recommendation on the display unit.

[0012] Embodiment 6; One or more embodiments of the present invention propose a display control system characterized in that the one or more processors calculate or evaluate the reliability of the route information for which the number of route re-searches executed when the vehicle deviates from the initial route is equal to or more than a certain number to be low.

[0013] Embodiment 7; One or more embodiments of the present invention propose a display control system characterized in that the one or more processors calculate or evaluate the reliability of the route information for which the display area on the display unit is equal to or more than a predetermined area to be low.

[0014] Aspect 8; One or more embodiments of the present invention propose a display control system characterized in that one or more of the processors calculate or evaluate the reliability of the position information of the host vehicle and the route information at a predetermined distance therefrom to be low.

Advantages of the Invention

[0015] According to one or more embodiments of the present invention, by changing the display mode of the driving route that the host vehicle intends to travel according to the reliability, unexpected route changes that occur during the automatic driving mode or the driving support mode can be recognized in advance by the vehicle occupants, and there is an effect that the discomfort of the vehicle occupants can be alleviated.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Embodiments for Carrying Out the Invention

[0017] Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 13.

[0018] <First Embodiment> The display control system 1 according to the present embodiment will be described with reference to FIGS. 1 to 10.

[0019] <Configuration of Display Control System> As shown in FIG. 1, the display control system 1 according to the present embodiment includes a vehicle navigation device 100 and a display control device 200.

[0020] The vehicle navigation device 100 searches for route information for a destination set by the user based on a navigation map as first map information, and displays the searched route and the first map information based on the searched route and the first map information. Route guidance is provided to the user. The navigation map information as the first map information is updated at regular intervals. The vehicle navigation device 100 receives information on road conditions such as traffic information, and also displays traffic jam information and the like of the surrounding roads including the searched route. In the present embodiment, when the driving entity of the host vehicle equipped with the vehicle navigation device 100 is a vehicle, for some of the routes transmitted from the display control device 200 described later, the display form in the display unit described later is changed and displayed based on the display information for changing the display form.

[0021] For each route information, the display control device 200 calculates a reliability based on a defined relational expression, and transmits display control information for changing the display form of each route information to the vehicle navigation device 100 according to the reliability of each calculated route information, so as to change the display form of the route in the vehicle navigation device 100.

[0022] <Configuration of Vehicle Navigation Device 100> As shown in FIG. 2, the vehicle navigation device 100 according to the present embodiment includes a storage unit 110, a position information acquisition unit 120, a route information search unit 130, a display unit 140, and a display control unit 150.

[0023] The storage unit 110 stores navigation map information as the first map information. Specifically, the storage unit 110 is a storage medium and its reading device in which navigation map information necessary for navigation such as map display, facility search, and route search is stored. The storage unit 110 may be configured by a hard disk device or a semiconductor memory.

[0024] The position information acquisition unit 120 includes, for example, a GPS receiver, an azimuth sensor, a distance sensor, etc., and detects the position information (longitude information, latitude information) of the host vehicle at a predetermined timing to acquire the position information of the host vehicle.

[0025] The route information search unit 130 performs a route search process to search for a route (guidance route) that connects between the departure place and the destination set by the user according to a predetermined search condition.

[0026] The display unit 140 is composed of, for example, an LCD (Liquid Crystal Display) or the like, and displays a map image around the position of the host vehicle, an intersection guidance image, or a search result image including detailed information of a facility obtained by facility search, based on a video signal output from a navigation controller (not shown).

[0027] The display control unit 150 controls the display mode of the display unit 140 based on map image drawing data input from a control unit of the vehicle navigation device 100 (not shown) or a display control device 200 described later.

[0028] <Configuration of the display control device 200> As shown in FIG. 3, the display control device 200 according to the present embodiment includes a processor 210 and a memory 220.

[0029] The processor 210 controls the entire display control device 200 according to a control program stored in the memory 220 described later. In particular, in the present embodiment, the processor 210 executes functions such as a driving subject determination unit 211, a reliability calculation unit 212, and a display control information generation unit 213, which will be described later.

[0030] The memory 220 includes a ROM (Read Only Memory), a RAM (Random Access Memory), etc. The control program and the like are stored in the ROM, and various data and the like are stored in the RAM. In the present embodiment, for example, the route information from the vehicle navigation device 100 is associated with the reliability calculated by the reliability calculation unit 212 described later and stored in the RAM.

[0031] <Configuration of the processor 210> As shown in FIG. 3, the processor 210 includes a driving subject determination unit 211, a reliability calculation unit 212, and a display control information generation unit 213.

[0032] The driving entity determination unit 211 determines the driving entity of the host vehicle by, for example, inputting information indicating whether the host vehicle is in the automatic driving mode or the driving support mode from a vehicle control device mounted on the host vehicle. The driving entity determination unit 211 outputs the determination result to the reliability calculation unit 212.

[0033] The reliability calculation unit 212 calculates the reliability of the route information retrieved by the route information search unit 130 based on the following relational expression.

[0034]

Equation

[0035] Here, the "recommendation degree" is, for example, an index obtained by aggregating responses from users with driving experience, etc., for the route information included in the navigation map information, and when held by the vehicle navigation device 100, it is acquired from the vehicle navigation device 100. Also, when acquiring from a server or the like (not shown), the reliability calculation unit 212 may directly acquire it. The "number of routes with similar recommendation degrees" is, for example, when there are multiple pieces of route information from the current position of the host vehicle to a certain specific point, for one piece of that route information, it is the number of route information with similar recommendation degrees. "Similar" may be determined by mutual numerical values or degrees, or when the "recommendation degree" is leveled, the same level may be regarded as "similar". Also, the "number of re-searches within a certain period" is, for example, the number of times of re-search of specific route information included in the navigation map information. Also, the "display area" is, for example, the scale when the specific route information included in the navigation map information is displayed on the display screen of the display unit 140. Note that for the "route", when there is a point (waypoint) where the route of the high-precision map intersects between the current position of the host vehicle and the destination, it includes the current position of the host vehicle to the waypoint, between waypoints, and from the waypoint to the destination.

[0036] The display control information generation unit 213 generates display control information for changing the display mode of the route information of the display unit 140 according to the reliability and the like calculated by the reliability calculation unit 212, and transmits the generated display control information to the vehicle navigation device 100.

[0037] <Processing of the display control system 1> The processing of the display control system 1 according to the present embodiment will be described with reference to FIGS. 4 to 10.

[0038] As shown in FIG. 4, for example, the driving entity determination unit 211 inputs information indicating whether the host vehicle is in the automatic driving mode or the driving support mode from a vehicle control device or the like mounted on the host vehicle, and determines the driving entity of the host vehicle (step S101). When the driving entity determination unit 211 determines that the driving entity of the host vehicle is not the vehicle (''NO'' in step S101), the process returns to step S101.

[0039] On the other hand, when the driving entity determination unit 211 determines that the driving entity of the host vehicle is the vehicle (''YES'' in step S101), the processor 210 determines whether the host vehicle is traveling on the display route displayed on the vehicle navigation device 100 based on, for example, the route information and the position information of the host vehicle received from the vehicle navigation device 100 (step S102).

[0040] When the processor 210 determines that the host vehicle is traveling on the display route displayed on the vehicle navigation device 100 (''YES'' in step S102), the process is transitioned to step S103 in order to instruct the reliability calculation unit 212 to calculate the reliability of the displayed route information.

[0041] The reliability calculation unit 212 calculates the reliability of the displayed route information from the information obtained from the vehicle navigation device 100 or the like and the relational expression shown in the above formula 1 (step S103). Here, FIG. 5 illustrates the reliability for each path information in the reliability calculation unit 212. As shown in FIG. 5, the reliability is classified into five levels from A to E in descending order of reliability. In the figure, levels C and below are considered to have low reliability. Among the recommendation degree used for calculating the reliability, the number of paths with similar recommendation degrees, the number of re-searches in a certain period, and the parameters of the display area, the recommendation degree is classified into five levels with the highest one being "5". Also, the number of paths with similar recommendation degrees and the number of re-searches in a certain period are classified into five levels in descending order of the number. Furthermore, the display area is classified into five levels in descending order of the area size.

[0042] Based on the reliability obtained from the reliability calculation unit 212 and the displayed path information, etc., the display control information generation unit 213 determines whether the reliability of the path information is below a predetermined value (in the example of FIG. 5, level C and below) (step S104). Here, the predetermined value can be exemplified by the average value of all reliabilities, or a value according to the specifications, etc. Note that the predetermined value may be changed as appropriate.

[0043] When the display control information generation unit 213 determines that the reliability of the path information is below a predetermined value (in the example of FIG. 5, level C and below) ( "YES" in step S104), it executes a reliability display process for generating display control information and ends the process. Note that the details of the reliability display process will be described later.

[0044] On the other hand, when the display control information generation unit 213 determines that the reliability of the path information is not below a predetermined value (in the example of FIG. 5, level C and below) ( "NO" in step S104), it generates display control information for narrowing the display area and ends the process.

[0045] <Reliability Display Process> The reliability display process according to this embodiment will be described with reference to FIGS. 6 to 9.

[0046] As shown in FIG. 6, when the host vehicle is not traveling on the route displayed on the display unit 140, the display control information generation unit 213 determines that the route information does not exist in the first map information (navigation map) ( "NO" in step S1051). And in this case, since the reliability of the route information is low, display control information is generated (step S1055). That is, for a route that does not exist in the first map information (navigation map), there is no recommendation level. Therefore, regardless of the levels of other parameters, the reliability calculated by the reliability calculation unit 212 becomes "0", and the level becomes "E". Therefore, it is determined that the reliability of the route information is low, and the display control information generation unit 213 generates display control information. Specifically, using FIGS. 5 and 7, in FIG. 5, for example, the route that meets the above conditions is "Route 3". "Route 3" in FIG. 5 is a route on which the host vehicle MB travels, is a route on the high-definition map (dotted line in FIG. 7), and intersects with the route of the first map information (solid line in FIG. 7) at the waypoint WP. Therefore, the display control information generation unit 213 generates, for example, display control information for displaying the route from the host vehicle MB to the waypoint WP as a bold two-dot chain line different from other routes. On the other hand, when the display control information generation unit 213 determines that the route information exists in the first map information (navigation map) ("YES" in step S1051), the process proceeds to step S1052.

[0047] The display control information generation unit 213 determines whether there are a plurality of routes having the same level of recommendation as the route displayed on the display unit 140 on which the host vehicle is traveling (step S1052). Specifically, using FIGS. 5 and 8, in FIG. 5, for example, the route that meets the above conditions is "Route 1". As shown in FIG. 5, "Route 1" has a recommendation level of "3", and there are two routes, Route Z and Route α, with the same recommendation level of "3". That is, when the route displayed on the display unit 140 while the host vehicle is traveling is, for example, "Route 1" in FIG. 5, the "Route 1" satisfies the condition that "there are a plurality of routes having the same level of recommendation" ( "YES" in step S1052). In addition, as shown in FIG. 5, since "Route 1" and "Route Z" have a reliability level of "C" and are classified as routes with low reliability, as shown in FIG. 8, for "Route 1" and "Route Z", display control information for displaying a thick two-dot chain line is generated as the display of the route from the host vehicle MB to the waypoint WP. On the other hand, since "Route α" has a reliability level of "B" and is classified as a route with high reliability, as shown in FIG. 8, it is displayed in a normal display form, that is, a thick solid line. Note that a plurality of pieces of route information having the same level of recommendation are controlled to continue to be displayed on the display unit 140 even while the host vehicle is traveling. On the other hand, when the display control information generation unit 213 determines that there are no routes having the same level of recommendation as the route displayed on the display unit 140 while the host vehicle is traveling ( "NO" in step S1052), the process proceeds to step S1053.

[0048] The display control information generation unit 213 determines whether or not the re-search of the route for the route displayed on the display unit 140 while the host vehicle is traveling is a certain amount or more (step S1053). Specifically, with reference to FIGS. 5 and 8, in FIG. 5, the route that meets the above conditions is, for example, "Route X". That is, as shown in FIG. 5, "Route X" has a re-search count level of "5" for a certain period and satisfies the condition that "the re-search count is a certain amount or more" ( "YES" in step S1053). In addition, as shown in FIG. 5, since "Route X" has a reliability level of "D" and is classified as a route with low reliability, as shown in FIG. 8, for "Route X", display control information for displaying a thick two-dot chain line is generated as the display of the route from the host vehicle MB to the waypoint WP. On the other hand, when the display control information generation unit 213 determines that the re-search of the route displayed on the display unit 140 on which the host vehicle is traveling is not more than a certain level ( "NO" in step S1053), the process proceeds to step S1054.

[0049] The display control information generation unit 213 determines whether or not the display area of the route displayed on the display unit 140 on which the host vehicle is traveling is equal to or larger than a predetermined area (step S1054). Specifically, with reference to FIGS. 5 and 8, in FIG. 5, the route that meets the above conditions is, for example, "Route Y". That is, as shown in FIG. 5, "Route Y" has a display area level of "5" and satisfies the condition that "the display area is equal to or larger than a predetermined area" ( "YES" in step S1054). In addition, as shown in FIG. 5, since "Route Y" has a reliability level of "D" and is classified as a route with low reliability, as shown in FIG. 10, for "Route Y", display control information for displaying a thick two-dot chain line is generated as the display of the route from the host vehicle MB to the waypoint WP. On the other hand, when the display control information generation unit 213 determines that the display area of the route displayed on the display unit 140 on which the host vehicle is traveling is not equal to or larger than a predetermined area ( "NO" in step S1054), the process proceeds to the end transition.

[0050] <Function and Effect> As described above, the display control system 1 according to the present embodiment includes a vehicle navigation device 100 and a display control device 200. One or more processors 210 of the display control device 200 determine the driver of the host vehicle MB, and when the determined driver of the host vehicle MB is a vehicle, at least calculate the reliability of the route information included in the first map information, and transmit display control information for changing the display mode of the route information on the display unit 140 of the vehicle navigation device 100 according to the reliability to the display control unit 150. That is, the display control system 1 according to the present embodiment calculates at least the reliability of the route information included in the first map information in a vehicle in the automatic driving mode or the driving support mode, and changes the display mode of the route information on the display unit 140 of the vehicle navigation device 100 according to the reliability. Therefore, by changing the display mode of the driving route that the host vehicle is about to travel according to the reliability, the vehicle occupants can be made aware in advance of an unexpected route change that occurs during the automatic driving mode or the driving support mode, and the discomfort of the vehicle occupants can be alleviated.

[0051] The display control system 1 according to the present embodiment associates the calculated reliability with the first map information and stores it in the memory. Once determined, the reliability does not change unless the roads constituting the route and their surrounding environment change significantly. In addition, the navigation map is updated only at regular intervals in order to suppress the time and cost required for the update process. Therefore, if the calculated reliability is associated with the first map information and stored in the memory, it is possible to access the reliability regarding the searched route information in a short time, and the display form can be changed immediately.

[0052] The display control system 1 according to the present embodiment calculates or evaluates the reliability of the route information that does not match the route information of the first map information based on the position information of the host vehicle to be low. The fact that the route information based on the position information of the host vehicle does not match the route information of the first map information means that the route information based on the position information of the host vehicle is route information that does not exist in the first map information. If the route information based on the position information of the host vehicle is route information that does not exist in the first map information, there is no recommendation level, so the reliability level is naturally low regardless of the level of other parameters.

[0053] When there are a plurality of pieces of recommended route information having the same level of recommendation as the route information based on the position information of the host vehicle, the display control system 1 according to the present embodiment calculates or evaluates the reliability of the recommended route information to be low. When there are a plurality of pieces of recommended route information having the same level of recommendation as the route information based on the position information of the host vehicle, any of the recommended routes may be traveled by the host vehicle. Therefore, when there are a plurality of pieces of recommended route information having the same level of recommendation as the route information based on the position information of the host vehicle, by calculating or evaluating the reliability of the recommended route information to be low, even if the host vehicle travels on any of the recommended routes, the vehicle occupants can be made aware in advance, and the discomfort of the vehicle occupants can be alleviated.

[0054] The display control system 1 according to the present embodiment controls to continuously display a plurality of pieces of route information having the same level of recommendation on the display unit 140. When there are a plurality of pieces of recommended route information having the same level of recommendation as the route information based on the position information of the host vehicle, any of the recommended routes may be traveled by the host vehicle. Therefore, when there are a plurality of pieces of recommended route information having the same level of recommendation as the route information based on the position information of the host vehicle, the reliability of the recommended route information is calculated or evaluated to be low, and these pieces of recommended route information are continuously displayed even when the host vehicle is traveling. Thus, even if the host vehicle travels on any of the recommended routes, the vehicle occupants can be made aware in advance, and the discomfort of the vehicle occupants can be alleviated.

[0055] The display control system 1 according to the present embodiment calculates or evaluates the reliability of route information having a route re-search count of a certain number or more when the vehicle deviates from the initial route to be low. Regarding route information having a route re-search count of a certain number or more when the vehicle deviates from the initial route, there is a high possibility that the route selection between the navigation map and the vehicle side does not match. Therefore, when the vehicle deviates from the original route, if the number of route re-searches to be executed is equal to or more than a certain number, the reliability of the route information is calculated or evaluated to be low, and by displaying to that effect, the vehicle occupants can be made aware of that fact in advance, and the discomfort of the vehicle occupants can be alleviated.

[0056] The display control system 1 according to the present embodiment calculates or evaluates to be low the reliability of route information for which the display area in the display unit 140 is equal to or more than a predetermined area. Here, the "predetermined area" can be exemplified by a range in which a high-precision map can be displayed. That is, when the display area in the display unit 140 is equal to or more than the predetermined area, for example, the display area in the display unit 140 exceeds the range in which a high-precision map can be displayed. Therefore, when the display area in the display unit 140 is equal to or more than the predetermined area, the reliability of the route information is calculated or evaluated to be low, and by displaying to that effect, the vehicle occupants can be made aware of that fact in advance, and the discomfort of the vehicle occupants can be alleviated.

[0057] <Second Embodiment> The display control system 1 according to the present embodiment will be described with reference to FIGS. 11 to 14.

[0058] <Configuration of Processor 210A> As shown in FIG. 11, the processor 210A includes a driving entity determination unit 211, a display control information generation unit 213A, and a reliability evaluation unit 214. Note that components denoted by the same reference numerals as those in the first embodiment have the same functions, and thus detailed descriptions thereof are omitted.

[0059] The reliability evaluation unit 214 calculates or evaluates to be low the reliability of route information that is at a predetermined distance from the position information of the host vehicle. Specifically, for example, the reliability evaluation unit 214 acquires the position information (latitude and longitude information) of the host vehicle and the position information (latitude and longitude information) of the search route from the in-vehicle navigation device 100, and evaluates the reliability of the route information at a predetermined distance from the position information of the host vehicle as low. Here, the "predetermined distance" generally refers to a distance recognized as being relatively far, and for example, 1 km can be exemplified.

[0060] The display control information generation unit 213A acquires, for example, the position information (latitude and longitude information) of the host vehicle and the position information (latitude and longitude information) of the search route from the in-vehicle navigation device 100, generates display control information for the route information at a predetermined distance from the position information of the host vehicle, and transmits the generated display control information to the display control unit 150.

[0061] <Processing of the display control system 1> The processing of the display control system 1 according to the present embodiment will be described with reference to FIGS. 12 and 13.

[0062] As shown in FIG. 12, for example, the driving entity determination unit 211 inputs information indicating whether the vehicle is in the automatic driving mode or the driving support mode from a vehicle control device or the like mounted on the vehicle, and determines the driving entity of the host vehicle (step S101). When the driving entity determination unit 211 determines that the driving entity of the host vehicle is not the vehicle ( "NO" in step S101), the process returns to step S101.

[0063] On the other hand, when the driving entity determination unit 211 determines that the driving entity of the host vehicle is the vehicle ( "YES" in step S101), the reliability evaluation unit 214 evaluates the reliability of the search route based on, for example, the search route information and the position information of the host vehicle received from the in-vehicle navigation device 100 (step S201). For example, the reliability evaluation unit 214 evaluates the reliability of the route information at a predetermined distance ( "L" in FIG. 13) from the position information of the host vehicle as low.

[0064] The display control information generation unit 213A determines whether the reliability evaluation obtained from the reliability evaluation unit 214 is low (step S202). Here, an example of "low reliability evaluation" is a case where it is lower than the average of all reliability evaluations. Note that the evaluation criteria may be changed as appropriate.

[0065] When the display control information generation unit 213A determines that the reliability of the route information is low ( "YES" in step S202), it executes a reliability display process for generating display control information and ends the process. Note that, as shown in FIG. 13, the display control information generation unit 213A generates display control information for displaying the search route as a bold two-dot chain line.

[0066] On the other hand, when the display control information generation unit 213A determines that the reliability of the route information is not low ( "NO" in step S202), it generates display control information for narrowing the display area and ends the process.

[0067] <Function and Effect> As described above, the display control system 1 according to the present embodiment evaluates the reliability of the position information of the host vehicle and the route information at a predetermined distance away as low. There is a high possibility that there are other candidate routes in addition to the route at a predetermined distance from the position information of the host vehicle. Therefore, by evaluating the reliability of the route at a predetermined distance from the position information of the host vehicle as low and changing the display mode, unexpected route changes that occur during the automatic driving mode or the driving support mode can be pre-recognized by the vehicle occupants in advance, thereby reducing the discomfort of the vehicle occupants.

[0068] <Modification Example 1> In the first embodiment, it has been shown to change the display form of the route not included in the first map information. However, when the host vehicle travels on a route not included in the first map information, the traveled trajectory may be displayed and stored in the vehicle navigation device 100. By storing the trajectory of driving on a route that does not exist in the first map information in this way, when the host vehicle drives on the same route, it becomes possible to promptly change the display form of the route on the side of the vehicle navigation device 100.

[0069] <Modification Example 2> When the vehicle navigation device 100 described in the embodiment is a cloud-type navigation device, when the host vehicle drives on a route that does not exist in the first map information, the trajectory of the driving is transmitted to and stored in the cloud server. By processing in this way, when the host vehicle drives on the same route again, it is possible to display the route in a changed display form at the timing of receiving data from the cloud server.

[0070] Note that the processing of the processor 210 can be recorded on a computer system-readable recording medium, and the program recorded on this recording medium can be read into the memory 220 and executed to realize the display control system of the present invention. The computer system referred to here includes hardware such as an OS and peripheral devices.

[0071] Also, the "computer system" shall include a homepage providing environment (or display environment) if it uses the WWW (World Wide Web) system. Further, the above program may be transmitted from a computer system storing this program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the "transmission medium" for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication wire) such as a telephone line.

[0072] Also, the above program may be for realizing a part of the functions described above. Further, it may be a so-called difference file (difference program) that can realize the functions described above in combination with a program already recorded in a computer system.

[0073] As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and designs and the like within the scope not departing from the gist of the present invention are also included.

Explanation of Reference Numerals

[0074] 1; Display control system 100; Vehicle navigation device 110; Storage unit 120; Position information acquisition unit 130; Route information search unit 140; Display unit 150; Display control unit 200; Display control device 210; Processor 210A; Processor 211; Driving entity determination unit 212; Reliability calculation unit 212A; Reliability calculation unit 213; Display control information generation unit 213A; Display control information generation unit 214; Reliability evaluation unit 220; Memory

Claims

1. A memory unit that stores first map information; A position information acquisition unit that acquires the position information of the own vehicle; A route information setting unit that sets route information based on the position information of the own vehicle, destination information set by the user, and the first map information; A display unit that displays the first map information, the route information, and the position information of the own vehicle to the passengers of the own vehicle; A display control unit that controls the display mode of the information on the display unit; A vehicle navigation device including the above; A display control device; Including; The display control device includes one or more processors and one or more memories communicably connected to the one or more processors. The one or more processors: Determine the driving entity of the own vehicle. When the determined driving entity of the own vehicle is a vehicle, calculate the reliability of at least the route information included in the first map information based on a number 1, and change the display mode of the route information on the display unit according to the reliability. Transmit display control information including display mode information, the position of the own vehicle, a passing point where the route of the first map information and the route of the high-definition map intersect, and the display area as the display area to the display control unit. A display control system characterized by the above. 【Number 1】

2. The one or more processors store the calculated or evaluated reliability associated with the first map information in the memory. The display control system according to claim 1, characterized by the above.

3. The one or more processors calculate or evaluate the reliability of the route information that does not match the route information of the first map information based on the position information of the own vehicle to be low. The display control system according to claim 1, characterized by the above.

4. When there are a plurality of recommended route information with the same level of recommendation as the route information based on the position information of the own vehicle, the one or more processors calculate or evaluate the reliability of the recommended route information to be low. The display control system according to claim 1, characterized by the above.

5. The one or more processors control to continuously display the plurality of route information with the same level of recommendation on the display unit. The display control system according to claim 4, characterized by the above.

6. The display control system according to claim 1, wherein the one or more processors calculate or evaluate the reliability of the route information to be low when the number of route re-searches to be executed when the vehicle deviates from the original route is equal to or greater than a certain number.

7. The display control system according to claim 1, wherein the one or more processors calculate or evaluate the reliability of the route information to be low when the display area in the display unit is equal to or greater than a predetermined area.

8. The display control system according to claim 1, wherein the one or more processors calculate or evaluate the reliability of the route information at a position separated from the position information of the host vehicle by a predetermined distance to be low.

Images