JP2007024599A - On-vehicle navigation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle navigation device for sure arrival at a target location, when traveling, while referring to a screen that displays the present position mark and its peripheral area map. <P>SOLUTION: Based on a present vehicle speed, an ideal stopping distance is operated which is obtained, when a normal driver on a normal vehicle ordinarily performs a deceleration operation (steps S10 and S11). A vehicle stoppable range is calculated, while referring to previously stored vehicle information related to deceleration operation, such as vehicle weight and tire characteristics and information on the driver's habit as to deceleration operation, and further, taking into consideration the present driving time and road surface conditions (steps S12 and S13). Thereafter, the stoppable range is screen-displayed, superimposed on the present position and on its peripheral map (steps S14 to S16). This allows the driver to grasp the relative positional relation between the present position and the target point, and to surely and safely arrive at the target point. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an in-vehicle navigation device that detects the current location of a vehicle, displays a map around the vehicle, and navigates the vehicle.

  In the current in-vehicle navigation device, voice guidance such as “Please turn right at the intersection after XX m” is performed at a predetermined distance before a branching point such as an intersection on the searched route. In Patent Document 1, the timing for performing the voice guidance is changed according to the vehicle speed. That is, when the vehicle speed is high, the voice guidance is given early, and when the vehicle speed is low, the voice guidance is given late. As a result, it is possible to realize voice guidance in consideration of the time to reach the branch point, and the driver can turn the branch point without a sense of incongruity.

On the other hand, Patent Document 2 displays a figure (guide arrow) according to the distance from the current location to a branch point and the bending direction at the branch point at the time of route guidance. As a result, the driver can intuitively recognize the distance to the branch point and the bending direction thereof in a short screen gaze time, so that safe guidance can be realized.
JP 2001-241962 A JP-A-6-341850

  By the way, when driving without setting a driving route, the user aims at a target point (intersection, convenience store, etc.) while referring to a screen displaying a current location mark indicating the current location and a map around it, which is updated every moment. Here, the current location is displayed after matching the estimated current location based on the gyroscope, vehicle speed (sometimes substituted by an acceleration / deceleration sensor) and the detection signal from the GPS receiver with the map data. This causes a time delay. In addition, the size of the current location mark displayed on the normal screen is the same regardless of the map scale displayed on the screen, so it may be difficult to recognize the relative positional relationship with the target point from the screen. . For this reason, when the map scale of the screen is large, it is often known that the vehicle has passed the current location mark for the first time after passing the target point.

  Therefore, just by guiding the distance to the guidance target point as in Patent Document 1, it is not possible to grasp the sense of distance from the screen, and thus the above problem cannot be solved. In this regard, if the technique described in Patent Document 2 is used, it is possible to intuitively grasp the sense of distance from the screen to the guidance target point, but there is a possibility that the guidance target point may be passed depending on the vehicle speed. Furthermore, since it is assumed that both of Patent Documents 1 and 2 set a travel route, this method cannot be applied when traveling without setting a travel route.

  The present invention has been made in view of the above problems, and provides an in-vehicle navigation device that can reliably reach a target point when traveling while referring to a screen displaying a current location mark and its surrounding map. Objective.

  In order to achieve the above object, the in-vehicle navigation device according to claim 1 includes a position detection unit that detects a current location of a vehicle, a map data storage unit that stores map data including facility data where the vehicle may stop, In a vehicle-mounted navigation device comprising a mark indicating the current location of the vehicle and display means for displaying map data around the vehicle, speed detection means for detecting the speed of the vehicle, and the speed of the vehicle detected by the speed detection means And a calculating means for calculating a stoppable range accompanying the deceleration operation of the vehicle according to the display, and the display means displays the stoppable range of the vehicle calculated by the calculation means together with the displayed map data. It is characterized by that. As a result, if the target point such as a convenience store or an intersection is included in the stoppable range, the driver can surely reach the target point by quickly decelerating.

  The on-vehicle navigation device according to claim 2 is characterized in that the display means displays a figure indicating a stoppable range of the vehicle in an overlapping manner on the map data. Thereby, the driver can recognize whether or not the target point on the map is included in the stoppable range.

  The in-vehicle navigation device according to claim 3 is characterized in that the display means displays the road included in the stoppable range of the vehicle or the facility data itself in a conspicuous manner. This also allows the driver to recognize the stoppable range. Examples of a method for displaying the road (including an intersection) or the facility data itself in a conspicuous manner include a method for changing the color of the road or blinking it.

  The vehicle-mounted navigation device according to claim 4 includes learning means for learning a driver's habit related to the deceleration operation of the vehicle, and the calculation means considers the driver's habit related to the deceleration operation of the vehicle learned by the learning means. The stopping range of the vehicle is calculated. The driver's hesitation regarding the deceleration operation of the vehicle means whether the deceleration timing is late or early, or whether the degree of braking is strong or weak. As a result, it is possible to display a stoppable range that reflects the driver's deceleration habit.

  The in-vehicle navigation device according to claim 5 includes vehicle information acquisition means for acquiring vehicle information related to a deceleration operation of the vehicle, and the calculation means calculates the stoppable range of the vehicle in consideration of the vehicle information. It is characterized by. For example, if the weight of the vehicle is different, the distance to stop even if the deceleration operation is performed under the same condition is considered to be different. That is, even if the same deceleration operation is performed, the stoppable range differs depending on the vehicle. In other words, the vehicle information related to the deceleration operation of the vehicle refers to information related to the effectiveness of the brake when the deceleration operation is performed, such as the weight of the vehicle. Thereby, the stoppable range suitable for each vehicle can be displayed.

  The in-vehicle navigation device according to claim 6 includes environmental information acquisition means for acquiring environmental information at the time of traveling related to at least a road surface condition or a driving time zone of the road, and the calculation means includes the road surface condition acquired by the environmental information acquisition means. Alternatively, the stoppable range of the vehicle is calculated in consideration of the travel time zone. For example, since the road surface is wet during rain, the distance from the deceleration operation to the stop is greater than when the road surface is not wet. Further, when traveling at night, the timing for decelerating operation is delayed compared to during daytime traveling. Furthermore, when the road surface snows or the road surface freezes, the vehicle deceleration is remarkably reduced, and early operations are required for everything. That is, it is considered that the range where the vehicle can be stopped is different if the environment during traveling is different. Therefore, it is possible to display a stoppable range that reflects the environment during travel.

  The in-vehicle navigation device according to claim 7 is provided with a correction unit that corrects a stoppable range of the vehicle displayed by the display unit by a user. There may be a deviation between the stoppable range of the vehicle calculated on the in-vehicle navigation side and the stoppable range assumed by the user. When a plurality of people drive frequently, the driver's bag stored in the external memory 9 may be different from the current driver's bag. In view of the above, in claim 7, the stoppable range displayed by the user is corrected.

  The vehicle-mounted navigation device according to claim 8 is characterized in that the display means displays the stoppable range of the vehicle in a manner in which the degree of the deceleration operation can be recognized. The mode in which the degree of the deceleration operation can be recognized is displayed, for example, in a graphic showing the stoppable range by changing the color of the range where the vehicle is suddenly decelerated and stopped and the range where the vehicle is gradually decelerated and stopped. As a result, the driver can appropriately decelerate the target point.

  The vehicle-mounted navigation device according to claim 9 is characterized in that the display means conspicuously displays a stoppable range when the vehicle is ideally decelerated among the stoppable ranges of the vehicle. For example, there is a case where if a deceleration operation is performed early on the target point, the target point must be accelerated again. On the other hand, if you decelerate late, there will be more danger. That is, when trying to reach the target point, it is desirable to perform an ideal deceleration operation. Claim 9 is made on the assumption of such a situation.

  The vehicle-mounted navigation device according to claim 10 is characterized in that the display means displays the stoppable range of the vehicle only when displaying the facility data or the branch point. In general, the vehicle performs a deceleration operation when turning at an intersection or stopping at a convenience store. Claim 10 is made under such a purpose. In other words, if the facility data or the branch point is not displayed, the stoppable range is not displayed, so that troublesomeness due to the display of the stoppable range can be prevented.

  The in-vehicle navigation device according to claim 11 includes a setting unit that sets a departure point and a destination, and a search unit that searches for a route from the departure point to the destination set by the setting unit. The stoppable range of the vehicle along the route searched by the search means is calculated. For example, when traveling along a searched route, there is no point in displaying a stoppable range when the vehicle is traveling straight even when the vehicle approaches a branch point where it should turn. Therefore, in claim 11, it is possible to display a stoppable range in consideration of the direction of turning around the branch point along the searched route. Thereby, even when there is a target point immediately after turning, the target point can be reliably reached without passing.

  The in-vehicle navigation device according to claim 12, wherein the map data includes map data of a plurality of scales, and the display unit can display the map data of the plurality of scales, and the map of the plurality of scales. The display of the stoppable range of the vehicle is stopped when map data of a predetermined scale or more is displayed among the data. Usually, the stoppable range of the vehicle is in the range of several meters to several tens of meters, so even if the stoppable range is displayed on a map with a certain scale, the driver cannot recognize it. Claim 12 is made for this purpose.

  The in-vehicle navigation device according to claim 13 is provided with stop means for stopping the display of the stoppable range of the vehicle displayed by the display means by a user operation. This is because some users may find it annoying to display the stoppable range of the vehicle, or it may not be necessary to display the stoppable range when driving on a well-known road. It is a thing.

  The on-vehicle navigation device according to claim 14, wherein the display unit displays information indicating a distance or time until the vehicle corresponding to the stoppable range stops together with the display of the stoppable range of the vehicle. To do. Thus, by displaying information indicating the distance and time until the vehicle stops, it becomes easier for the driver to grasp the relative positional relationship between the current location and the target location. That is, it is possible to make it easier to reach the target point. As a display method of the information indicating the distance or time until the vehicle stops, for example, a method of displaying a figure indicating the stoppable range of the vehicle in different colors according to the distance and time until the vehicle stops can be considered. .

  Hereinafter, an embodiment of an in-vehicle navigation device according to the present invention will be described. FIG. 1 is a block diagram showing the overall configuration of the in-vehicle navigation device 100 of the present embodiment. As shown in the figure, the in-vehicle navigation device 100 includes a position detector 1, a map data input device 6, an operation switch group 7, an external memory 9, a display device 10, an audio output device 11, a remote control sensor 12, a remote control 13, and a deceleration-related device. It comprises a sensor group 14 and a control circuit 8 connected thereto. Each component will be described below.

  The position detector 1 is a known geomagnetic sensor 2, gyroscope 3, distance sensor 4 (sometimes replaced by an acceleration / deceleration sensor), and GPS that detects the position of the vehicle based on radio waves from a satellite. It has a GPS receiver 5 for (Global Positioning System). Since these have errors of different properties, they are configured to be used while being complemented by a plurality of sensors. Depending on the accuracy of each sensor, the position detector 1 may be constituted by a part of the above-described parts, and a steering rotation sensor (not shown), a vehicle speed sensor for each rolling wheel, or the like may be used. The current position of the vehicle is detected by the position detector 1, and the control circuit 8 to be described later can recognize, for example, where the vehicle is traveling on the searched route when performing route guidance. It can be determined whether or not the vehicle is traveling along the route.

  A vehicle speed sensor (not shown) for detecting the vehicle speed used by the distance sensor 4 is used for calculating a stoppable range corresponding to the vehicle speed, which is a feature of the present invention. The process at that time will be described later using a flowchart.

  The map data input device 6 displays road map data indicating the connection structure of roads, background data for displaying backgrounds related to topography and facilities, and place names when displaying road maps using the road map data. For this purpose, various types of map data such as character data are input to the control circuit 8. The map data input device 6 includes a storage medium for storing the above-described map data. As the storage medium, a DVD-ROM or a hard disk is generally used because of the amount of data, but other memory cards or the like are used. A storage medium may be used.

  Here, the map data stored in the storage medium of the map data input device 6 will be briefly described. First, the road map data includes node data regarding points where a plurality of roads intersect, merge and branch, and link data regarding roads connecting the points. The node data is composed of data such as node ID, node coordinates, node name, link ID of all links connected to the node, intersection type, etc. The The link data is composed of data such as a link ID with a unique number for each road, link length, start and end coordinates, road type such as expressway and general road, road width, link travel time, etc. Yes.

  The background data is configured as data in which each facility or terrain on the map is associated with the corresponding coordinates on the map. Regarding the facility, data such as a telephone number and an address are also stored in association with the facility. The character data is used to display place names, facility names, road names, and the like on a map, and is stored in association with coordinate data corresponding to the positions to be displayed.

  Therefore, a map including roads can be displayed by combining background data and character data with this road map data. In addition to displaying a map, the road map data is used to give the shape of a road when performing map matching processing, and is used to search for a guide route to a destination.

  As the operation switch group 7, for example, a touch switch or a mechanical switch integrated with the display device 10 to be described later is used. For example, the operation switch group 7 is used to set a starting point and a destination when searching for a route.

  The external memory 9 includes a storage medium such as a memory card or a hard disk. The external memory 9 stores various data such as text data, image data, and audio data stored by the user. In the present embodiment, vehicle information related to the deceleration operation such as the weight of the vehicle, the relationship between the brake operation degree and the braking force, and the tire characteristics is stored. In addition, the external memory 9 also stores information on wrinkles related to the driver's deceleration operation. The trap related to the deceleration operation of the driver refers to information such as whether the timing of the deceleration operation is early or late, and whether the brake pedal is depressed or weak. This information is automatically acquired and stored during normal travel. As will be described later, the control circuit 8 uses this vehicle information and the information on the spear relating to the driver's deceleration operation to calculate the stoppable range of the vehicle according to the vehicle speed.

  The display device 10 is configured by, for example, a liquid crystal display, and is usually generated on the screen of the display device 10 by the own vehicle position mark corresponding to the current position of the vehicle and the map data input from the map data input device 6. A road map around the subject vehicle is displayed. In addition, various screens such as a menu screen and a setting screen are displayed on the display device 10 by operating the operation switch group 7. Furthermore, the stoppable range of the vehicle, which is a feature of the present invention, is also displayed on the display device 10 so as to overlap the map display.

  The voice output device 11 is composed of a speaker, an audio amplifier, and the like, and is used when voice guidance such as route guidance is performed.

  The in-vehicle navigation device 100 according to the present embodiment includes a remote control terminal (hereinafter referred to as a remote controller) 13 and a remote control sensor 12. It is possible to perform navigation operations.

  The deceleration-related sensor group 14 includes various sensors that acquire information related to the stoppable range when the vehicle decelerates. Specifically, there is a sensor that detects the degree of operation of a brake pedal and an accelerator pedal. This is because the degree of these operations is directly related to the stoppable range of the vehicle. Further, the above-described wrinkle information related to the driver's deceleration operation is also acquired from a sensor that detects the degree of operation of the brake rake pedal and the accelerator pedal. Next, there is a sensor that detects lighting of the headlight. This is used to determine whether the running time is daytime or nighttime. That is, it can be determined that the vehicle travels at night when lighting of the headlight is detected, and it can be determined that the vehicle travels during daytime when it cannot be detected. In this way, the reason for determining whether it is daytime driving or nighttime driving is considered to be because the surroundings are darker during nighttime driving than in daytime driving, so the timing of entering the deceleration operation is considered to be delayed. Because it is considered to be different. Next, there is a sensor for detecting the driving of the wiper. This is used to determine whether it is raining or not. A rain sensor that directly detects rainfall may be used. This determination is made because the road surface is wet when it is raining, so the distance to stop is longer than when it is not raining. That is, the stoppable range is different. Next, there is a sensor for detecting the outside air temperature. This is used to determine whether or not the road surface is snowing or freezing in the state of the outside air temperature. This determination is made because the stopping distance differs significantly when the road surface is snowing or frozen.

  The control circuit 8 is configured as a normal computer, and includes a well-known CPU, ROM, RAM, I / O, and a bus line for connecting these configurations. In the ROM, a program to be executed by the control circuit 8 is written, and according to this program, the CPU performs various arithmetic processes using the respective units. For example, when the user has set a departure point and a destination, the map data is used to search for an optimum route from the departure point to the destination and guide the vehicle along the searched route. Even if the route is not set, the current position of the vehicle is detected based on the signal from the position detector 1, and the matching process is performed so that it is located on the road of the map data.

  Furthermore, the control circuit 8 performs a process of displaying a stoppable range on the display device 10 together with the current location mark and the surrounding map when the vehicle decelerates according to the vehicle speed. The process at this time will be described with reference to the flowchart of FIG. In addition, suppose that the scale of the map currently displayed on the display apparatus 10 is below predetermined as a premise which displays this stop possible range. This is because the normal stoppage range of the vehicle is several meters to several tens of meters, and the driver cannot recognize the stoppage range even if the stoppage range is displayed on a map with a scale larger than a predetermined scale.

  First, in step S10, the vehicle speed is acquired. Next, in step S11, an ideal stop distance according to the vehicle speed when the driver decelerates the vehicle is calculated. The ideal stop distance here refers to the distance until the vehicle stops when a standard driver for a standard vehicle performs a normal deceleration operation. This ideal stop distance can be calculated from vehicle kinetic energy (vehicle speed, vehicle weight) and braking force, friction force between the tire and the road surface, and the like.

  Next, in step S12, information related to the deceleration operation is acquired. Specifically, vehicle information such as the weight of the vehicle stored in the external memory 9, information on the driver's eyelids regarding the deceleration operation, information on whether it is daytime or nighttime from the deceleration related sensor group 14, and whether it is raining Get the information. Based on these pieces of information, a stoppable range is calculated in step S13. Specifically, the ideal stop distance calculated in step S12 is corrected, and further, the distance that can be stopped at the shortest by operating the brake pedal and the distance that can be stopped at the longest are calculated. For example, when the vehicle is heavier than the standard vehicle calculated in step S12, the ideal stop distance is corrected so as to increase. In addition, when the timing of the driver's deceleration operation is later than that of a standard person, the overall stoppable range is calculated so as to leave the current location.

  Next, in step S14, the current location is detected based on the position detector 1, and in step S15, a mark indicating the current location and a map around the current location are displayed on the display device 10. At the same time, in step S16, the figure indicating the stoppable range of the vehicle calculated in step S13 is displayed superimposed on the map displayed on the display device 10 as shown in FIG. Note that the figure showing the possible stop range of the vehicle shown in FIG. 3 gradually increases in width as it approaches the ideal stop position. This makes it possible for the driver to grasp the ideal stop position at a glance, and since the width of the figure varies depending on the stop position, the driver can grasp how quickly the driver should decelerate. Can do. In this way, by displaying the possible stop range of the vehicle over the map, the driver can safely and reliably reach the target location depending on whether the target location such as an intersection or convenience store is included in the possible stop range. Can be reached. For example, in the example shown in FIG. 3, the convenience store is displayed on the screen ahead of the traveling direction of the vehicle, and since the convenience store is being included in the figure indicating the stoppable range, the driver gradually decelerates. Then you can reach that convenience store. Depending on the driver, the convenience store has not yet reached the ideal stop position, so it may be possible to refrain from decelerating with caution until then. This is because the vehicle can be stopped more naturally by decelerating at the ideal stop position. Furthermore, when the displayed intersection is an intersection that should be turned, the intersection is located in front of the ideal stop position, so that it is understood that it is necessary to depress the brake pedal more strongly than usual. In any case, by displaying the range in which the vehicle can be stopped on the map, the driver can grasp the positional relationship between the vehicle and the target point, and can reach the target point reliably and safely.

  Thereafter, the process returns to step S10 again, and the above-described processing is repeated. That is, since the vehicle speed changes as the driver performs acceleration / deceleration operations, the stoppable range changes in real time. Therefore, the driver can perform an appropriate deceleration operation at each time point.

  As described above, the in-vehicle navigation device 100 according to the present embodiment displays the stoppable range of the vehicle according to the vehicle speed on the map. This stoppable range is calculated by reflecting the characteristics of the vehicle, driver's habits, daytime / nighttime, and road surface conditions, so it can be said that it is more consistent with the actual stoppable range. Thereby, the driver can grasp the relative positional relationship between the current location and the target point from the screen, and can reach the target point reliably and safely.

  In addition, this invention is not limited to the said embodiment, Based on the meaning of this invention, it can implement with a various form. For example, in the present embodiment, the graphic width is changed in accordance with the stop position so that the degree of deceleration can be recognized as a graphic indicating the stoppable range of the vehicle (see FIG. 3). Therefore, for example, as shown in FIG. 4, the figure indicating the stoppable range of the vehicle is constant regardless of the stop position, and the degree of deceleration according to the stop position can be recognized by changing the color and gradation according to the stop position. Even if it does, the same effect can be acquired.

  Moreover, in this embodiment, the figure which shows the stop possible range with respect to the advancing direction of the vehicle was always displayed. However, even if it is known in advance that the intersection is turned when the route is set, it is almost meaningless to display a stoppable range in the vehicle traveling direction at the intersection. On the other hand, it may happen that the vehicle passes past the target point that is bent. Therefore, when a route is set, the stoppable range of the vehicle may be displayed along the route. FIG. 5 is a flowchart showing a process for realizing this. In addition, the same code | symbol is attached | subjected to the process same as the process mentioned above. As shown in the figure, only the step S17 is different from the flowchart of FIG. That is, in step S17, the stop possible range of the vehicle is displayed along the searched route. As a result, as shown in FIG. 6, when the vehicle approaches an intersection to bend, the stoppable range is also bent and displayed. Therefore, it is possible to grasp the relative positional relationship with the current location even with respect to the target point that is bent, and it is possible to reach the target point reliably and safely.

  In the present embodiment, a graphic indicating the stoppable range is always displayed while the vehicle is traveling. However, the driver usually decelerates when turning around a branch point or when visiting a facility such as a convenience store. Therefore, the stoppable range of the vehicle may be displayed only when the branch point or facility is displayed. FIG. 7 is a flowchart showing a process for realizing this. In addition, the same code | symbol is attached | subjected to the process same as the process mentioned above. As shown in the figure, it can be realized by inserting a process (step S18) for determining whether or not there is a branch point or a facility between steps S15 and S16 in the flowchart of FIG. That is, when there is no branch point or facility in step S18, the process returns to step S10 without displaying the stoppable range. Thereby, it is possible to prevent the troublesomeness of displaying the stoppable range even though there is no branch point or facility.

  It is also expected that some drivers may not need to display the stoppable range under any circumstances. Alternatively, when traveling on a well-known road, there may be a case where it is not necessary to display a stoppable range. Therefore, a switch for stopping the display of the stoppable range may be provided.

  In the present embodiment, a graphic indicating the stoppable range is displayed so that the degree of deceleration can be recognized (see FIGS. 3 and 4). Furthermore, the distance or time until stopping according to the stop position in the stoppable range may be grasped. For example, as shown in FIGS. 8A and 8B, the stoppable range is displayed in different colors according to the stop position. This will make it easier for the driver to grasp the relative positional relationship between the current location and the target location.

  In the present embodiment, a graphic indicating the stoppage range is used to display the stoppable range. However, if the stoppable range can be recognized on the screen, it is not limited to this. For example, as shown in FIG. 9A, the color of map display objects (intersections, facilities) included in the stoppable range can be changed. Alternatively, it may be highlighted by blinking. Alternatively, as shown in FIG. 9B, a map road included in the stoppable range may be highlighted by changing the color.

  In the present embodiment, the stoppable range of the vehicle when a two-dimensional map is displayed on the screen has been described. However, the present invention may be applied to a case where a three-dimensional map is displayed. For example, as shown in FIG. 10 (a), the color of the display object is changed when included in the stoppable range, or the stoppable range is displayed over the road as shown in FIG. 10 (b). . Thereby, the driver can recognize which range can be stopped.

  In addition, although the possible stop range in the present embodiment is calculated in consideration of various conditions, it is a theoretical value to the last, so it may be expected that the stop possible range is slightly different from the possible stop range assumed by the driver. The When a plurality of people drive frequently, the driver's bag stored in the external memory 9 may be different from the driver's bag currently driving. Therefore, the driver may be allowed to finely adjust the display position of the stoppable range. Specifically, for example, the stoppable range is moved in the operation direction of the cross key provided in the remote controller 13. Thereby, it is possible to display a stoppable range that is closer to the actual situation.

It is a block diagram which shows the whole structure of the vehicle-mounted navigation apparatus 100 of this embodiment. It is a flowchart which shows the process which displays the present area and its surrounding map on a screen, and displays the stop possible range according to the speed of a vehicle on this. It is the example figure which displayed the figure which shows a stop possible range with the present location and its periphery map. It is the example figure which displayed the figure which shows a stop possible range with the present location and its periphery map, Comprising: The degree of deceleration is color-coded and expressed in the stop possible range. It is a flowchart which shows the process which displays the presentable area and its surrounding map on a screen, and the stopable range according to the speed of a vehicle superimposed on this when a path | route is set. It is an example figure which shows having displayed the stop possible range along the path | route when the path | route setting is made. It is a flowchart which shows the process which displays a stop possible range only when a branch point or a facility is displayed. It is an example figure which also displayed the distance (the figure (a)) and time (the figure (b)) until it stops according to a stop position with the stop possible range. An example diagram showing that a branch point or a facility included in the stoppable range is highlighted instead of a figure indicating the stoppable range (the figure (a)), and an example diagram showing that the road on the map is highlighted ( (B) of FIG. It is the example figure which showed the stop possible range at the time of displaying a three-dimensional map.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Car-mounted navigation apparatus 1 Position detector 2 Geomagnetic sensor 3 Gyroscope 4 Distance sensor 5 GPS receiver 6 Map data input device 7 Operation switch group 8 Control circuit 9 External memory 10 Display apparatus 11 Voice output device 12 Remote control sensor 13 Remote control 14 Deceleration Related sensors

Claims (14)

Position detecting means for detecting the current location of the vehicle;
Map data storage means for storing map data including facility data on which the vehicle may stop;
In a vehicle-mounted navigation device comprising a mark indicating the current location of the vehicle and display means for displaying map data around the mark,
Speed detecting means for detecting the speed of the vehicle;
Calculation means for calculating a stoppable range associated with a deceleration operation of the vehicle according to the speed of the vehicle detected by the speed detection means;
The on-vehicle navigation device, wherein the display means displays the stoppable range of the vehicle calculated by the calculating means together with the displayed map data.   The in-vehicle navigation device according to claim 1, wherein the display unit displays a figure indicating a stoppable range of the vehicle so as to overlap the map data.   The in-vehicle navigation device according to claim 1, wherein the display unit displays a road included in the stoppable range of the vehicle or the facility data itself in a conspicuous manner. Learning means for learning a driver's habit regarding the deceleration operation of the vehicle,
The said calculation means calculates the stop possible range of the said vehicle in consideration of the driver | operator's habit about the deceleration operation of the said vehicle which the said learning means learned. Car navigation system. Vehicle information acquisition means for acquiring vehicle information related to the deceleration operation of the vehicle,
The in-vehicle navigation device according to claim 1, wherein the calculation unit calculates a stoppable range of the vehicle in consideration of the vehicle information. At least environmental information acquisition means for acquiring environmental information at the time of traveling related to road surface conditions or traveling time zones,
The said calculation means calculates the stop possible range of the said vehicle in consideration of the said road surface condition or driving | running | working time slot | zone which the said environmental information acquisition means acquired. Car navigation system.   The in-vehicle navigation device according to claim 1, further comprising a correction unit that corrects a stoppable range of the vehicle displayed by the display unit by a user.   The in-vehicle navigation device according to any one of claims 1 to 7, wherein the display unit displays a stoppable range of the vehicle in a manner in which a degree of a deceleration operation can be recognized.   The in-vehicle navigation device according to claim 8, wherein the display unit displays the stoppable range when the deceleration operation is ideally performed among the stoppable range of the vehicle.   The in-vehicle navigation device according to claim 1, wherein the display unit displays a stoppable range of the vehicle only when displaying the facility data or a branch point. A setting means for setting a starting point and a destination,
Search means for searching for a route from the departure place to the destination set by the setting means,
The in-vehicle navigation device according to claim 1, wherein the calculation unit calculates a stoppable range of the vehicle along the route searched by the search unit. The map data has map data of a plurality of scales,
The display means is capable of displaying map data of the plurality of scales, and when displaying map data of a predetermined scale or more among the map data of the plurality of scales, the display of the stoppable range of the vehicle is performed. The in-vehicle navigation device according to claim 1, wherein the on-vehicle navigation device is stopped.   The in-vehicle navigation device according to any one of claims 1 to 12, further comprising stop means for stopping the display of the stoppable range of the vehicle displayed by the display means by a user operation.   The said display means displays the information which shows the distance or time until the said vehicle corresponding to the said stop possible range stops with the display of the said stop possible range of vehicles. The in-vehicle navigation device described in 1.

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