JP2009216437A - On-vehicle navigation apparatus and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique which compensates for a decrease in the power of attention of a driver and allows safer driving when driving a vehicle at high altitude. <P>SOLUTION: The on-vehicle navigation apparatus, when it determines that the altitude of the current position corresponds to a predetermined high-altitude area (S110), sets a notification mode related to route guidance and attention seeking to be a notification mode for high altitude in which notification contents are strengthened or added with respect to a predetermined notification mode at normal times. Specifically, the notification contents at high altitude are strengthened by methods such as extending a display area (S120), advancing notification timing (S130), increasing the volume of notification voice (S140), forcibly turning on a notification function turned off by a user (S150), and performing correlated notification with an on-vehicle notification apparatus (S170). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle-mounted navigation device that performs route guidance to a destination, alerts a driver of a vehicle, and the like.

Conventionally, a vehicle-mounted navigation device that performs route guidance to a destination, alerts a driver, and the like has been widely used. In this type of in-vehicle navigation device, a device that displays a map in three dimensions by using planar map data and altitude data associated therewith has been devised (see, for example, Patent Documents 1 and 2). ). According to such a vehicle-mounted navigation device, it is possible to display a map rich in reality.
Japanese Patent Laid-Open No. 11-44545 JP 2005-195475 A

  By the way, the in-vehicle navigation device has become widespread and has been widely installed in many vehicles, so that the range of its use has expanded. For example, a vehicle equipped with a vehicle-mounted navigation device is also traveling on a road that is maintained at a high altitude of an altitude of 3000 m to 5000 m. On the other hand, the atmospheric pressure gradually decreases as the altitude increases, so the partial pressure of oxygen in the atmosphere also decreases. Although there are individual differences, at high altitudes of 3000 m or more, the effect of concentration and intellectual clarity on the human body becomes conspicuous due to a decrease in the amount of oxygen. Therefore, when driving a vehicle in a high altitude, the driver's attention is reduced, so there is a possibility that a point of caution that would not be overlooked when driving in a low altitude is overlooked. Therefore, when the vehicle travels on high altitudes, technical support such as strengthening route guidance and alerting content more than usual to compensate for the decline in driver's attention, It is desired to improve safety during traveling.

  However, in the techniques described in Patent Documents 1 and 2, a display mode rich in reality is realized by using altitude data. However, improvement in safety in high altitudes is not considered, and Such a problem cannot be solved.

  The present invention has been made to solve the above-mentioned problems, and provides a technique for compensating for a decrease in the driver's attention when driving a vehicle at a high altitude and enabling safer driving. Objective.

  The vehicle-mounted navigation device according to claim 1, which is made to achieve the above object, performs at least one of route guidance to a destination or alerting at a predetermined timing to a vehicle driver. A navigation device comprising high altitude determination means, setting means, and notification control means.

  The high altitude determining means determines whether or not the altitude at the current position of the vehicle falls within a predetermined high altitude range. When the high altitude determination means determines that the altitude of the current location falls within the predetermined high altitude range, the setting means displays the notification mode related to route guidance or alerting with respect to the predetermined notification mode at normal times. Set to enhanced or added notification mode for high altitude. On the other hand, when it is determined by the high altitude determination means that the current location does not correspond to an area higher than the predetermined high altitude, the route guidance or alerting notification mode is set to a predetermined notification mode in normal times. The notification control unit causes the notification unit to notify the route guidance and the alerting with the notification content in accordance with the notification mode set by the setting unit.

The predetermined high altitude here may be an altitude at which the driver's attention may be reduced due to a decrease in atmospheric pressure, for example.
According to the in-vehicle navigation device configured as described above, when the vehicle is traveling on a high altitude, the route guidance and the alerting enhanced in the contents from the normal (low altitude) notification mode are given to the driver of the vehicle. Can be done. In this way, in high altitudes where the driver's attention tends to be reduced, the driver's attention can be compensated for by making the driver strongly aware of the notification content. It becomes possible.

  In addition, as a notification mode for high altitudes, in the case of outputting the route guidance and alert notification content by voice, the route guidance by voice or the volume of the alert call is set to a normal level as described in claim 2. It is better to increase than the volume. In this way, by increasing the volume of the guidance voice in high altitudes compared to the normal volume, it is possible to make the driver recognize the content of the notification strongly and audibly. It can effectively compensate for attention reduction.

  Further, when the route guidance and alert notification contents are presented by display as a notification mode for high altitudes, the route guidance or the alert display is displayed more than the normal display as described in claim 3. It should be emphasized. As a specific example of emphasizing the display, for example, it is conceivable to make the display area of the guidance display image displayed by pop-up on the screen larger than a normal one. In addition, it is also conceivable to add a variety of effects such as blinking and reversal, addition of decoration, change of color, etc. to the guidance display image so as to emphasize it more than the normal display mode.

  In this way, by emphasizing the display of route guidance and alerting in high altitudes than in normal times, it is possible to make the driver recognize the content of the notification more audibly and in high altitudes. This effectively compensates for the driver's decline in attention.

  Furthermore, as a high altitude notification mode, as described in claim 4, the timing for notifying route guidance or the alerting may be set to a timing earlier than that of a normal time. In this way, in a situation where the driver's attention is reduced at high altitudes, the driver can recognize the target of route guidance and alerting more quickly, It is possible to easily take a response. Therefore, it is possible to effectively compensate for the driver's attention reduction at high altitudes by changing the timing for performing route guidance and alerting.

  By the way, some in-vehicle navigation devices can customize whether to perform a specific notification function by the user's selection, such as turning on / off a function for performing a prior warning for a curve by the user's selection. There is. That is, the user can turn off the notification function by himself / herself if he / she determines that the user can drive while confirming safety without the notification function. However, even in a situation where the driver can confirm safety himself / herself in normal times, if the driver's attention is reduced at high altitudes, it may be necessary to provide support by a notification function.

  Therefore, it is preferable to configure as described in claim 5. That is, the in-vehicle navigation device is configured to be able to set whether or not to implement the notification function for a specific notification function related to route guidance or alerting by an instruction from the user. Then, the setting means temporarily sets the implementation of a specific notification function that is set to be disabled according to an instruction from the user as a notification mode for high altitudes.

  By configuring in this way, it is possible to forcibly set the notification function set to OFF according to the user's instruction to ON at high altitudes. Therefore, the notification function that is not executed in normal times is automatically executed in the high altitudes, and it is possible to effectively compensate for the driver's attention reduction in the high altitudes.

  Next, the vehicle-mounted navigation device according to claim 6 has the following characteristics. In order to notify the vehicle driver of information, the vehicle is configured to be communicable with an external notification device that is a device outside the in-vehicle navigation device, and the notification control means includes: It has a function of controlling the external notification device to notify route guidance or alerting. The setting means is configured not to perform route guidance or alerting notification using the external notification device in the normal notification mode, and in the notification mode for high altitudes, using the external notification device. It is set to execute route guidance or alert notification.

  By configuring in this way, in addition to a notification unit (for example, a display device, a voice output device, etc.) that the in-vehicle navigation device itself has while driving on high altitudes, it cooperates with an external notification device provided in the vehicle. Thus, it is possible to execute notification related to route guidance and alerting, and to effectively compensate for a driver's attention reduction in high altitudes. In addition, as an external alerting | reporting apparatus linked with the vehicle-mounted navigation apparatus of this invention, the indicator lamp provided in a vehicle meter panel, a vehicle interior, an audio | voice output apparatus, a head-up display, etc. are mentioned, for example.

  By the way, as the altitude rises, the influence on the human body such as concentration and intellectual clarity decreases gradually, so in order to compensate for the driver's attention reduction, It seems desirable to gradually increase the degree.

  Therefore, a configuration as described in claim 7 is preferable. In other words, the high altitude determining means determines which of the plurality of high altitude regions at which the altitude at the current position of the vehicle is set stepwise for each predetermined altitude range. In addition, the setting means corresponds to each step of the high altitude region, and a notification mode for high altitudes of a plurality of steps in which the degree of enhancement or addition of the notification content is increased step by step as the level of the high altitude region is higher. It is configured to be configurable. And when it is determined by the high altitude determination means that the altitude of the current location corresponds to the high altitude area at any stage, the route guidance or alerting notification mode is set for the high altitude at the stage corresponding to the determined stage. Set to notification mode.

With this configuration, the notification content is strengthened step by step as the altitude increases, so that it is possible to effectively compensate for the driver's reduced attention, which is preferable.
In order to realize the high altitude determination means, the setting means, and the notification control means in the in-vehicle navigation apparatus as described above in a computer system, the program may be provided as a program that operates on the computer system as described in claim 8. Good. Such a program is recorded on a computer-readable storage medium such as a magnetic / optical / magneto-optical disk, a hard disk, a ROM, or a RAM, and loaded into the computer as necessary. Functions can be realized.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, this invention is not limited to the following embodiment at all, and can be implemented in the aspect.
[Description of configuration of in-vehicle navigation device 1]
FIG. 1 is a block diagram illustrating a schematic configuration of an in-vehicle navigation device 1 according to the embodiment.

  As shown in FIG. 1, the in-vehicle navigation device 1 includes a position detector 21 that detects the current position of the vehicle, an operation switch group 22 for inputting various instructions from a user, map data, a program, and the like. A hard disk drive (HDD) 23 that is a large capacity storage device, an external memory 24 that stores various information, a display device 25 for performing various displays such as a map display screen, and various guide voices are output. A voice output device 26 and a control unit 29. Moreover, the vehicle-mounted navigation apparatus 1 is connected to a vehicle-mounted notification device 3 provided in the vehicle so as to be communicable.

  The position detector 21 receives a radio wave transmitted from an artificial satellite for GPS via a GPS antenna, and detects a position coordinate and altitude of the vehicle according to a GPS receiver 21a and an angular velocity of rotational motion applied to the vehicle. A gyroscope 21b that outputs a detection signal and a vehicle speed sensor 21c that outputs a detection signal corresponding to the speed of the vehicle are provided. Each of the sensors 21a to 21c has an error having a different property, and is configured to be used while complementing each other.

  The operation switch group 22 includes a touch panel that is integrated with the display device 25 and is installed on the display surface, and mechanical key switches that are provided around the display device 25.

  The HDD 23 is a storage device that reads data stored in the hard disk based on control from the control unit 29 and inputs the data to the control unit 29. The data stored in the HDD 23 is map data including road data indicating road connection status and drawing data necessary for map display, map matching data, route guidance and alerting data for alerting. These are various data including a program for operating the vehicle-mounted navigation device 1, design image data, and the like.

  The external memory 24 is for storing various data such as high and high altitude determination area data. As the external memory 24, a storage device (for example, a non-volatile semiconductor memory) that can rewrite the stored contents electrically or magnetically and can retain the stored contents even when the power is turned off is used.

  Here, the high and high altitude determination area data will be described with reference to FIG. FIG. 2 is an explanatory diagram schematically showing an overview of high-altitude determination area data. The high and high altitude determination area data is data in which codes indicating the degree of altitude in stages are assigned to mesh-like divided areas obtained by dividing the map coordinate plane for each predetermined latitude and longitude.

  For example, as shown in FIG. 2 (a), near the center of a map coordinate area having vertices of latitude / longitude coordinates (X1, Y1), (X2, Y1), (X1, Y2), (X2, Y2) , It is assumed that high altitude areas with an altitude of 3000 m or more are distributed in patches. When creating high and high altitude determination area data corresponding to the map coordinate area, a divided area is defined by further dividing the map coordinate area. Then, as shown in FIG. 2B, for a divided area where the maximum altitude in the divided area is not less than 3000 m and less than 4000 m, the fact that the divided area is level 1 of the high-altitude area. A code “1” is assigned. Further, a code “2” indicating that the divided area is level 2 of the high and high altitude area is assigned to the divided area where the maximum altitude in the divided area is 4000 m or more and less than 5000 m. Further, a code “3” indicating that the divided area is level 3 of the high-altitude area is assigned to the divided area where the maximum altitude in the divided area is 5000 m or more. That is, the level of the high altitude area (hereinafter referred to as the high altitude level) assigned to each divided area becomes higher as the altitude increases.

  On the other hand, for a divided area that does not include a high altitude area with an altitude of 3000 m or higher, a code of “0” indicating that the divided area is a lowland other than the high altitude area is assigned. The high and high altitude determination area data defined in this way is high for each divided area obtained by dividing the map coordinate area for a part or all of the map coordinate area indicated by the map data stored in the HDD 23. It is stored in advance in the external memory 24 as table data defining the altitude level.

  Returning to the description of FIG. The display device 25 is a color display device having a display surface such as a liquid crystal display. The display device 25 can display various images on the display surface according to the input of the video signal from the control unit 29. For example, when the vehicle is traveling, the current position is indicated on a map around the current position identified from the current position of the vehicle detected by the position detector 21 and the map data input from the hard disk drive 23 as a navigation screen. Additional data such as a mark, a guide route to the destination, a name, a landmark, and various landmark symbols are displayed in an overlapping manner. In addition, warning messages for caution points such as direction guidance and sharp curves at intersections are also displayed in a pop-up.

  The audio output device 26 is configured to notify the user of various types of information by voice. As a result, various route guidance such as route guidance and curve warning and alerting can be given to the user both by the display by the display device 25 and the voice output from the voice output device 26.

  The control unit 29 is configured around a known microcomputer including a CPU, a ROM, a RAM, an I / O, a bus line connecting these configurations, and the like, and controls the above-described configuration of each unit. The control unit 29 executes various processes according to programs and various data read from the ROM, HDD 23, external memory 24, and the like.

  For example, the navigation-related processing includes map display processing and route guidance processing. The map display process is a process of calculating the current position of the vehicle based on each detection signal from the position detector 21 and displaying a map or the like near the current position read from the HDD 23 on the display device 25. Further, the route guidance process is to determine a destination route which is the optimum route from the current position to the destination based on the point data stored in the HDD 23 and the destination set according to the operation of the operation switch group 22 or the like. This is a process of calculating and displaying a travel guidance to the destination by display and voice in consideration of the relationship between the current position and the destination route. As a method for automatically setting an optimum route in this way, a method such as cost calculation by the Dijkstra method is known.

  In addition, as a characteristic process of the present invention, the control unit 29 executes a “notification mode change process” that changes a running route guidance and a warning notification mode in a stepwise manner according to the altitude of the current position. Detailed contents of the notification mode changing process will be described later.

  The in-vehicle notification device 3 connected to the in-vehicle navigation device 1 includes, for example, an indicator lamp and an audio output device provided on a meter panel of the vehicle, a head-up display that directly projects an image directly in the driver's field of view, It is a device for informing information to the driver vehicle by display or voice. These in-vehicle notification devices 3 notify various information to the driver based on control from the control unit 29 of the in-vehicle navigation device 1.

[Description of notification mode change processing]
Next, detailed contents of the above-described notification mode changing process executed by the control unit 29 of the vehicle-mounted navigation device 1 will be described with reference to FIGS.

  FIG. 3 is a flowchart showing a procedure of notification mode change processing executed by the control unit 29. This process is a process that is repeatedly executed while the in-vehicle navigation device 1 is activated.

  When starting the process, the control unit 29 first acquires the altitude of the current position (S100). Here, the current position of the vehicle is detected based on the position detector 21, and this is collated with the above-mentioned high and high altitude determination area data (see FIG. 2), so that the coordinates of the current position are obtained from the high and high altitude area determination data. And the code (level 0 to 3) assigned to this divided area is acquired as the altitude of the current position. Alternatively, the altitude of the current position may be measured by three-dimensional positioning based on the radio signal received by the GPS receiver 21a.

  Next, the altitude level of the current position is determined (S110). Here, it is determined whether the current position corresponds to low ground or high altitude levels 1 to 3. In S100, when the altitude of the current position is acquired from the high and high altitude area determination data, the current position is set to one of the low altitude and the high altitude levels 1 to 3 from the code assigned to the divided area corresponding to the current position. Determine if it applies. On the other hand, in S100, when the altitude is measured by three-dimensional positioning based on the radio signal received by the GPS receiver 21a, if the altitude is less than 3000 m, the altitude is low. If it is less than 5000 m, it is determined that it is high altitude level 2 and if it is 5000 m or more, it is high altitude level 3.

  Then, according to the altitude level determined in S110, a display area of a pop-up window used for displaying route guidance and alerting is set (S120). Here, the size of the pop-up window used when displaying a message for informing route guidance or alerting on the screen of the display device 25 is set according to the altitude level. The pop-up window is used to open a display frame (window) of a predetermined size on the forefront of the screen each time information notification is executed and present information there. For example, route guidance at intersections, lane guidance It is used for various route guidance and alerting such as toll road entrance / exit guidance and sharp curve warning.

  If the current position is low, the pop-up window is set to the normal size (minimum). On the other hand, if the current position is high altitude level 1, the size of the pop-up window is set to a size (level 1) that is one step larger than the normal size. If the current position is high altitude level 2, the size of the pop-up window is set to a size (level 2) that is one step larger than the level 1 size. If the current position is high altitude level 3, the size of the pop-up window is set to a size one level larger than the level 2 level (level 3: maximum).

  Next, according to the altitude level determined in S110, the route guidance and alerting notification timing is set (S130). Here, the higher the altitude level, the faster the route guidance and alerting notification timing corresponding to an object such as an intersection, a toll road entrance, or a curve. Specifically, if the route guidance or alerting corresponding to the target object is performed when the distance between the current position of the vehicle and the target object falls below the reference value, the reference value can be increased. The notification timing can be advanced, and if the reference value is reduced, the notification timing can be delayed.

  If the current position is low, the route guidance and alert notification timing is set to the normal timing (latest). On the other hand, if the current position is at a high altitude level 1, the route guidance and alerting notification timing is set to a timing (level 1) that is one step earlier than normal. If the current position is at high altitude level 2, the route guidance and alert notification timing is set to a timing (level 2) that is one step earlier than level 1. Also, if the current position is at high altitude level 3, the route guidance and alerting notification timing is set to a timing one level earlier than level 2 (level 3: the earliest).

  Next, according to the altitude level determined in S110, a sound volume for informing route guidance and alerting by voice is set (S140). Here, the higher the altitude level is, the higher the route guidance and alert volume is set. If the current position is low, the route guidance and alert volume is set to the normal volume (minimum). On the other hand, if the current position is at a high altitude level 1, the volume of route guidance and alerting is set to a volume (level 1) that is one step higher than normal. If the current position is at high altitude level 2, the route guidance and alert volume is set to a volume (level 2) that is one step higher than level 1. If the current position is high altitude level 3, the route guidance and alert volume is set to a level one level higher than level 2 (level 3: maximum).

  Next, according to the altitude level determined in S110, a setting change for turning on / off the notification function set by an instruction from the user is performed (S150). In the in-vehicle navigation device 1 of the present embodiment, it is assumed that the user can select in advance the setting of the notification function on / off for a specific notification function related to route guidance and alerting. . That is, by setting off the notification function that the user thinks is unnecessary, it can be set not to perform route guidance or alerting related to the notification function.

  In S150, if the current position corresponds to any one of the high altitude ground levels 1 to 3, the notification function set to OFF by the instruction from the user is forcibly set to ON. Here, when it corresponds to any one of the high altitude levels 1 to 3, it may be configured to turn on all of the plurality of notification functions all at once. Accordingly, a configuration may be adopted in which a plurality of notification functions are sequentially turned on step by step. On the other hand, when the current position corresponds to a lowland, the on / off setting for each notification function is set to the on / off state selected by an instruction from the user.

  Next, in accordance with the altitude level determined in S110, notification on / off in cooperation with the in-vehicle notification device 3 is set (S160). In the in-vehicle navigation device 1 of the present embodiment, it is assumed that it has a function capable of notifying the driving vehicle of information related to route guidance and alerting in cooperation with the in-vehicle notification device 3 provided in the vehicle. ing. That is, the display device 25 and the audio output device 26 of the in-vehicle navigation device 1 notify route guidance and alerting, and the in-vehicle notification device 3 (indicator lamp, audio output device, head-up display, etc.) also notifies the driver. Can present predetermined information.

  In S160, when the current position corresponds to one of the high altitude levels 1 to 3, the cooperation with the in-vehicle notification device 3 is set to ON. In addition, when cooperation with several vehicle-mounted alerting | reporting apparatus 3 is possible, when falling into any of the high altitude levels 1-3, cooperation with all the vehicle-mounted alerting devices 3 is set to ON simultaneously. A structure may be sufficient, and the structure which sets a cooperation with a some vehicle-mounted alerting | reporting apparatus sequentially to ON stepwise according to each level of the high altitude levels 1-3 may be sufficient.

  Next, route guidance and alerting based on the map data are performed along the notification mode set in each process of S120 to S160. In addition, since the specific processing content regarding route guidance and alerting in a vehicle-mounted navigation device is publicly known, detailed description thereof is omitted here.

Next, changes in the actual notification mode according to the altitude level will be described with reference to FIG. FIG. 4 is an explanatory diagram schematically showing an example of a notification mode according to the altitude level.
In FIG. 4, a notification mode of direction guidance for an intersection is assumed, (a) is a notification mode in normal times (low ground), (b) is a notification mode at high altitude level 1, (c) ) Shows a notification mode at high altitude level 2, and (d) shows a notification mode at high altitude level 3.

  As shown in FIG. 4A, in a normal time, a pop-up window of route guidance information indicating the traveling direction at the intersection is displayed in the map display area of the display device 25 at the timing when the vehicle reaches the point 100 m before the intersection. Displayed in front. In synchronization with this, a voice message telling the distance to the intersection and the traveling direction is output at a normal level.

  On the other hand, as shown in FIG. 4B, at the high altitude level 1, a pop-up window of route guidance information is displayed in a size larger than normal at the timing when the vehicle reaches a point 200 m to the intersection. In synchronization with this, a voice message that tells the distance to the intersection and the direction of travel is output at a level 1 volume that is greater than the normal level volume. This notification timing is earlier than the normal notification timing.

  Furthermore, as shown in FIG. 4C, at the high altitude level 2, the route guidance information pop-up window is larger than that at the high altitude level 1 at the timing when the vehicle reaches a point 300 m before the intersection. Displayed in size. In synchronization with this, a voice message that tells the distance to the intersection and the direction of travel is output at a level 2 volume that is higher than the level 1 volume. This notification timing is earlier than the notification timing at high altitude level 1.

  Further, as shown in FIG. 4D, at the high altitude level 3, the route guidance information pop-up window is larger than that at the high altitude level 2 when the vehicle arrives at a point 500 m before the intersection. Displayed in size. In synchronization with this, a voice message that tells the distance to the intersection and the direction of travel is output at a level 3 volume that is higher than the level 2 volume. This notification timing is earlier than the notification timing at high altitude level 2.

[effect]
According to the vehicle-mounted navigation device configured as described above, when the vehicle is traveling in a high altitude area, the vehicle driver is provided with route guidance and alerting with enhanced contents from the normal (low altitude) notification mode. Can be done against. In this way, in high altitudes where the driver's attention tends to be reduced, the driver's attention can be compensated for by making the driver strongly aware of the notification content. It becomes possible.

  Specifically, by increasing the volume when the route guidance and alerting are notified by voice, it is possible to make the driver strongly recognize the notification content auditorily. In addition, by expanding the display area (pop-up window) for informing route guidance and alerting by display, it is possible to make the driver strongly recognize the notification content auditorily. In addition, by making the route guidance and alerting notification timing earlier than usual, in the situation where the driver's attention is reduced at high altitudes, the route guidance and alerting targets are given to the driver. It can be recognized more quickly.

  Furthermore, the notification function set to OFF by the user's instruction can be forcibly set to ON at high altitudes. As a result, a notification function that is not executed in normal times is automatically executed while traveling in a high-altitude area, and a reduction in the driver's attention in high-altitude areas can be effectively compensated. In addition, when traveling in a high-altitude area, in addition to the display device 25 and the audio output device 26 that the in-vehicle navigation device 1 is equipped with, a notification related to route guidance and alerting in cooperation with an in-vehicle notification device provided in the vehicle. By executing the above, it is possible to effectively compensate for the driver's attention reduction in high altitudes. Moreover, since the notification content is strengthened in stages (high altitude levels 1 to 3) as the altitude increases, it is possible to effectively compensate for the driver's decline in attention.

1 is a block diagram showing a schematic configuration of a vehicle-mounted navigation device 1. It is explanatory drawing which shows the outline | summary of high-altitude determination area data typically. It is a flowchart which shows the procedure of an alerting | reporting aspect change process. It is explanatory drawing which shows typically an example of the alerting | reporting aspect according to an altitude level.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Vehicle-mounted navigation apparatus, 3 ... Vehicle-mounted alerting device, 21 ... Position detector, 21a ... GPS receiver, 21b ... Gyroscope, 21c ... Vehicle speed sensor, 22 ... Operation switch group, 23 ... Hard disk drive, 24 ... External memory , 25 ... display device, 26 ... audio output device, 29 ... control unit

Claims (8)

An in-vehicle navigation device that performs at least one of route guidance to a destination or alerting at a predetermined timing to a driver of a vehicle,
High altitude determination means for determining whether the altitude of the current position of the vehicle falls within a predetermined high altitude range;
When it is determined by the high altitude determination means that the altitude of the current location falls within a predetermined high altitude area, the notification mode relating to the route guidance or the alerting is enhanced with respect to the predetermined notification mode in normal times Alternatively, when the high altitude determination means determines that the current location does not correspond to an area higher than a predetermined high altitude, the route guidance or the alerting notification mode is set. Setting means for setting a predetermined notification mode in normal times;
An in-vehicle navigation device comprising: a notification control unit that notifies the notification unit of the route guidance and the alert with the notification content according to the notification mode set by the setting unit. The in-vehicle navigation device according to claim 1,
The notification control means is configured to be able to notify the route guidance or the alerting by voice,
The in-vehicle navigation device characterized in that, as the high altitude notification mode, the setting means increases the sound volume of the route guidance or the alerting sound from a normal sound volume. In the in-vehicle navigation device according to claim 1 or 2,
The notification control means is configured to be able to notify the route guidance or the alert on display,
The in-vehicle navigation device characterized in that the setting means emphasizes the route guidance or the alert display as compared to the normal display as the high altitude notification mode. The in-vehicle navigation device according to any one of claims 1 to 3,
The said setting means sets the timing which alert | reports the said route guidance or the said alerting as an alerting | reporting aspect for high altitudes to an earlier timing than a normal thing. The vehicle-mounted navigation apparatus characterized by the above-mentioned. The in-vehicle navigation device according to any one of claims 1 to 4,
With respect to the specific notification function related to the route guidance or the alerting, it is configured to be able to set whether to perform the notification function according to an instruction from the user,
The in-vehicle navigation device characterized in that the setting means temporarily sets the implementation of the specific notification function, which is set to be disabled by an instruction from a user, as the high altitude notification mode. . The in-vehicle navigation device according to any one of claims 1 to 5,
It is provided in the vehicle to notify the driver of the vehicle, and is configured to be able to communicate with an external notification device that is a device outside the in-vehicle navigation device,
The notification control means has a function of controlling the external notification device to notify the route guidance or the alerting,
The setting means is configured not to execute the route guidance or the alerting notification using the external notification device in a normal notification mode, and in the high altitude notification mode, the external notification device. A vehicle-mounted navigation device, characterized in that the route guidance or the alerting notification is set to be executed. The in-vehicle navigation device according to any one of claims 1 to 6,
The high altitude determination means determines whether the altitude at the current position of the vehicle corresponds to one of a plurality of high altitude areas set in stages for each predetermined altitude range,
The setting means corresponds to each step of the high altitude region, and the notifications for the high altitudes in a plurality of steps where the degree of enhancement or addition of the notification content is increased stepwise as the step of the high altitude region is higher The mode is configured to be settable, and when it is determined by the high altitude determination means that the altitude of the current location corresponds to the high altitude region at any stage, the route guidance or the alerting mode of the alert An in-vehicle navigation device characterized in that the high-altitude notification mode at a stage corresponding to the determined stage is set.   A program for controlling a computer used in the vehicle-mounted navigation device according to any one of claims 1 to 7, wherein the computer is configured to determine the high altitude, the setting unit, and the notification control unit. Program to function as.