JP4216100B2 - Car navigation system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an in-vehicle navigation device that guides a vehicle to a destination, and particularly to an in-vehicle navigation device having a function of registering point information.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an in-vehicle navigation device has been proposed that has a point registration function for storing points specified by a user, and displays a list of points sorted in descending order of use. The proposed in-vehicle navigation device stores a position designated by a user as point registration data, a point registration storage unit that stores the number of times used as a destination or a passing point for each point registration data, and point registration A control unit that reads out the location registration data from the storage unit, rearranges them in the order of the number of uses, displays them on the display unit, and updates the number of uses of the location registration data when the user uses the location registration data for setting a destination or a passing point (For example, refer to Patent Document 1).
[0003]
[Patent Document 1]
JP 10-332410 A (paragraph number “0009”, FIG. 5)
[0004]
[Problems to be solved by the invention]
However, in the conventional vehicle-mounted navigation device, the point list is rearranged and displayed in descending order of the number of times of use. Therefore, the rearrangement desired by the user is not always realized, and the user desires. Even if the rearrangement can be realized, the desired point is not always placed in front of the list. Therefore, the user rearranges the list in order to obtain the registered point information, and a lot of uniform points are obtained. There has been a problem that desired registered point information must be selected from the registered point information list.
[0005]
The present invention has been made to solve the above-mentioned problems, and by making it easy to find a desired point by categorizing points registered by the user according to classification rules set by the user. An object of the present invention is to obtain an in-vehicle navigation device capable of improving the usability of the vehicle.
[0006]
[Means for Solving the Problems]
The vehicle-mounted navigation device according to the present invention inputs a plurality of types of parameters representing attributes of point information to be registered according to an operation, and information input means for inputting an instruction to display a list of registered point information; A plurality of types of reference parameters that are used as criteria for determining various point information parameters are stored in advance, and input when it is determined that there is commonality between the point information parameters input from the information input means and the reference parameters. A point distribution unit that distributes the distributed point information into at least one classification corresponding to the content of commonality, a classification result distributed by the point distribution unit is stored as classification information, and a list display instruction input by the information input unit Displays a list of point information corresponding to the specified classification on the map display means according to the specified classification included in It is that a point that registration means.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The configuration of an embodiment of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a block diagram illustrating functions of the in-vehicle navigation device according to the first embodiment. In FIG. 1, a map information acquisition unit 101 acquires road information and information on facilities from map data stored in a storage medium such as a DVD-ROM or obtained through communication via a communication device. The position detection means 102 obtains the approximate position of the vehicle from the GPS receiver that detects the absolute position of the vehicle, the gyro that is the direction sensor, and the vehicle speed pulse that is the distance sensor, and the map data acquired by the map information acquisition means 101 described above. And map matching from the approximate position. The map display means 103 displays the vehicle surrounding map acquired by the map information acquisition means 101 or the vehicle position calculated by the position detection means 102 on the map. The route search unit 104 searches for a route to the destination input using the map data acquired by the map information acquisition unit 101. The point search unit 105 detects point information from the map data acquired by the map information acquisition unit 101. The point registration unit 106 has a memory for registering point information therein, and stores the point information extracted from the point search unit 105 as registered place information. The point distribution unit 107 has a memory therein, stores the point distribution rule information, and when the point registration unit 106 performs the point registration, the registration is performed based on the point distribution rule information stored in the memory. The classified point information is classified. The information input means 108 inputs the parameter of the spot information that is the registered place information and the reference parameter of the spot sorting rule information according to the operation, and also displays a list of the spot information registered in the spot registration means 106 Enter. Reference parameters will be described in detail later.
[0008]
FIG. 2 is a hardware block diagram of the in-vehicle navigation device that realizes the functions of FIG. In FIG. 2, a drive 201 corresponds to the map information acquisition unit 101 of FIG. 1, and reads map data from a medium such as a CD-ROM or DVD-ROM. The GPS receiver 202 detects an absolute position and an absolute direction. The vehicle speed sensor 203 generates a vehicle speed pulse for each predetermined travel distance of the vehicle and detects the speed of the vehicle. The GPS receiver 202 and the vehicle speed sensor 203 correspond to the position detection unit 102 in FIG. The operation switch 204 corresponds to the information input unit 108 in FIG. 1, and is used by the user to input reference parameters for the point distribution rule information, to activate the display 206, to switch the scale, and to input various information. . The communication device 205 is for acquiring map data from a server or the like connected via a network, and corresponds to a part of the map information acquisition unit 101 of FIG. The display 206 corresponds to the map display means 103 in FIG. 1 and displays a map around the own vehicle, a route guidance screen, a point search screen, a point registration screen map, and the like on the screen. The control unit 207 performs various calculations and overall control of the apparatus, and performs processing for realizing the functions of the route search unit 104, the point search unit 105, the point registration unit 106, and the point distribution unit 107 in FIG.
[0009]
FIG. 3 is a diagram showing the structure of point information registered in the memory of the point registration means 106. The point information is composed of five types of parameters, ie, latitude and longitude parameters 301, point name parameters 302, address name parameters 303, telephone number parameters 304, and symbol ID parameters 305, and classification information 306. The longitude / latitude parameter 301 is data on the longitude and latitude of the registered location. The point name parameter 302 is data of a character string of a name indicating a registered point. The address name parameter 303 is data of a character string indicating the address name on the map where the registered point exists. The telephone number parameter 304 is data of a numeric string indicating the telephone number of the facility when the registered point indicates the facility or the like. The symbol ID 305 is image data indicating the type of registered place symbol used when the registered point is expressed on the map display. The classification information 306 secures an area where bits for the number of classifications can be stored, stores a classification result by a sorting method described later, and indicates what the point is classified. Each classification has at least one type of point information parameter. Two or more classifications having the same type of point information parameter may be used. However, the point information data for each classification is different. For example, there may be a plurality of different point name parameter classifications such as “station” and “highway interchange”.
[0010]
FIG. 4 is a diagram showing the structure of the point distribution rule information stored in the memory of the point distribution unit 107. This point distribution rule information is composed of a plurality of types of reference parameters (406, 407, 408, 409, 410) that serve as criteria for determining parameters for various pieces of point information to be registered. That is, as shown in FIG. 4, the determination flag for each item on the left is a flag for determining whether the reference parameter of the corresponding item on the right is used as a reference for sorting (valid) or not used (not valid). It is. That is, the determination flag 401 is a flag for determining whether or not the longitude / latitude reference parameter 406 is used as a distribution determination value. If it is valid, the longitude / latitude reference parameter 406 is a determination reference value for distribution. The determination flag 402 is a flag for determining whether or not the location name reference parameter 407 is used as a sorting determination value. If it is valid, the location name reference parameter 407 is a determination reference value. The determination flag 403 is a flag for determining whether or not the address name reference parameter 408 is used as a distribution determination value. If it is valid, the address name reference parameter 408 is a determination reference value. The determination flag 404 is a flag for determining whether or not the telephone number reference parameter 409 is used as a sorting determination value. If it is valid, the telephone number reference parameter 409 is a determination reference value. The determination flag 405 is a flag for determining whether or not to use the symbol ID reference parameter 410 as a distribution determination value. If it is valid, the symbol ID reference parameter 410 is a determination reference value.
[0011]
FIG. 5 is a flowchart of the point registration process executed by the control unit 207 of FIG. In step ST501, the spot information to be registered is extracted by the spot search means 105 or on the displayed map. In step ST502, the point distribution unit 107 performs distribution processing of the point information to be registered based on the reference parameters of the point distribution rule information in FIG. In step ST503, the result distributed in step ST502 is stored in the classification information 306 in the point information of FIG. In step ST504, the spot information reflecting the classification information is registered, and this spot registration process is completed.
[0012]
FIG. 6 is a detailed flowchart of the classification information generation process of step ST502 in the flowchart of the point registration process of FIG. This classification information generation processing corresponds to the operation of the point distribution means 107 in FIG.
[0013]
First, in step ST601, the classification information of the registration target point is initialized, and in step ST602, the classification counter is initialized. For example, the value of the classification counter is set to the initial value “1”. Then, while increasing the value of n one by one, the loop from step ST603 to step ST607 is repeated until the value of the classification counter reaches the number of classifications (“6” in the first embodiment).
[0014]
In step ST603, for each classification, the distribution determination method is determined with reference to the point distribution rule information corresponding to the distribution destination. For example, if the determination flag 410 of the distribution rule information is valid, the longitude / latitude reference parameter 406 is used as the determination reference value, and the process proceeds to step ST604.
[0015]
In step ST604, whether or not to distribute all the items for which each flag of the point distribution rule information is valid is compared with each reference parameter of the point distribution rule information and each parameter of the registered point information. Determine. That is, when the reference parameter is included as a part of the parameters of the input point information, it is determined that there is commonality and the distribution process is performed. A comparison method according to each reference parameter of the point distribution rule information is performed as follows.
[0016]
For example, when the longitude / latitude determination flag 401 of the point allocation rule information is valid and the longitude / latitude parameter 301 of the registered point information is compared with the longitude / latitude reference parameter 406, the linear distance between the longitude and latitude is calculated. Then, a distance determination is made as to whether or not the distance is closer than a distance (for example, 100 m) prepared in advance in the point distribution means 107. That is, it is determined that the data of both longitudes and latitudes are the same up to “degree” and “minute” data, and that there is a slight difference of a predetermined value or less in the unit of “second”. In this case, the “degree” and “minute” data of the reference parameters are included in the “degree” and “minute” data that are part of the parameters of the input point information. Therefore, it is determined that both data have commonality. Note that the longitude / latitude parameter 301 and the longitude / latitude reference parameter 406 are obtained from the map information acquisition unit 101 by the point search unit 105 in FIG.
[0017]
In addition, when the name determination flag 402 of the spot distribution rule information is valid and the spot name parameter 302 of the registered spot information is compared with the spot name reference parameter 407, the spot name parameter 302 of the registered spot information is changed. A character string comparison is performed to determine whether or not the character string of the point name reference parameter 407 is included in the character string. For example, if the character string of the point name parameter 302 of the registered point information is “Osaka Eki” or “Osaka Jo” and the character string of the point name reference parameter 407 is “Osaka”, the registered point The character string of the information distribution parameter includes the character string of the reference parameter of the point distribution rule information.
[0018]
In addition, when the address name determination flag 403 of the point distribution rule information is valid and the address name parameter 303 of the registered point information is compared with the address name reference parameter 408, the address name parameter 303 of the registered point information. Is compared with the character string of the address name reference parameter 408. For example, the character string of the address name parameter 303 of the registered point information is “Tokyo Metropolitan XX Ward × Machi 2-1-36” or “Tokyo Metropolitan △ City △ Town 1-20-23”. When the character string of the reference parameter 408 is “Tokyo”, the character string of the reference parameter of the point distribution rule information is included in the character string of the registered point information parameter.
[0019]
In addition, when the telephone number determination flag 404 of the point distribution rule information is valid and the telephone number parameter 304 of the registered point information is compared with the telephone number reference parameter 409, the number string of the telephone number reference parameter 409 is registered. A numeric string forward match comparison is performed to determine whether the phone number parameter 304 of the point information is completely included from the beginning of the numeric string. For example, in the case where the numeric string of the telephone number reference parameter 409 is “06” and the registered telephone number parameter 304 to be determined is “06-XXXXXX-XXXXXX”, the registered point information The numerical string of the telephone number of the reference parameter of the point distribution rule information is completely included at the head of the numerical string of the telephone number parameter.
[0020]
In addition, when the symbol ID determination flag 405 of the point allocation rule information is valid and the symbol ID parameter 305 of the registered point information is compared with the symbol ID of the reference parameter 410, the same comparison is made as to whether both symbol IDs are equal. Do.
[0021]
As a result of performing these comparisons for all items for which each flag is valid, the registered spot information that is valid for all the items becomes a classification target, and the process proceeds to the classification information bit assignment processing in step ST605.
[0022]
In the classification information bit assignment process of step ST605, the bit of the classification information 306 of the registration target point information to be classified is made valid for each classification based on a repetition counter described later. As a result of the comparison in step ST604, if the registration target point information is not a classification target, the process does not move to step ST605 and the classification information is not valid.
[0023]
In step ST604, it is determined that the classification information is assigned and the classification information bit assignment process in step ST605 is performed to validate the classification information. Alternatively, in step ST604, it is determined that the classification information is not assigned, and the classification information bit assignment process is performed. If not, in either case, the process proceeds to step ST606, and the value of the classification counter is increased.
[0024]
Next, in step ST607, it is determined whether or not the increased classification counter value exceeds the number of classifications. When the value of the classification counter is equal to or less than the number of classifications, the process proceeds to step ST603, and the point distribution rule information of the next classification is interpreted. After this, depending on the determination result of step ST604, the process proceeds from step ST605 to step ST606, or directly proceeds to step ST606 without going through step ST605. In step ST607, it is determined whether or not the increased classification counter value exceeds the number of classifications. When the value of the classification counter does not exceed the number of classifications, the above loop is repeated, and when the value of the classification counter exceeds the number of classifications, the flow of this classification information generation process is completed, and the point registration process of FIG. Return to the flow. In addition, the standard parameter of the point distribution rule information referred in step ST603 and the classification information value set in step ST605 are different for each classification.
[0025]
FIG. 7 is a reference parameter setting screen for the point distribution rule information stored in the memory of the point distribution unit 107. In this setting screen, a designation icon representing each item of “name”, “latitude / latitude”, “phone”, “location”, “point mark”, data display areas 701 to 705 of each item, and “complete” Icon 706 is displayed. As described above, each item can be newly set, changed, and deleted as necessary.
[0026]
In the screen of FIG. 7, the reference parameter “Osaka” input to the input item “name” 701 is reflected in the point name reference parameter 407 of FIG. 4, and the point name determination flag 402 becomes valid. The value “135.30.00W: 34.40.00N” input to the input item “latitude / latitude” 702 is reflected in the longitude / latitude reference parameter 406, and the longitude / latitude determination flag 401 becomes valid. The value “06” input to the input item “telephone” 703 is reflected in the telephone number reference parameter 409, and the telephone number determination flag 404 becomes valid. The value “Osaka City” input to the input item “location” 704 is reflected in the address name reference parameter 408, and the address name determination flag 403 becomes valid. The mark ““! ”Selected and displayed in the input item“ point mark ”705 is displayed. “” Is reflected in the symbol ID as a symbol ID reference parameter, and the symbol ID determination flag 405 becomes valid.
[0027]
When the information input unit 108 detects that the switch corresponding to the input item “completion button” 706 is pressed, a valid value for each input item is reflected in the point distribution rule information by the point distribution unit 107. Only one reference parameter or a plurality of reference parameters may be valid in the input item. The reference parameter of the point distribution rule information set from the screen of FIG. 7 is used in the classification information generation process shown in FIG.
[0028]
8, 9, 10, 11, 12, and 13 show map display means 103 (FIG. 2) in response to a list display command input from information input means 108 (operation switch 204 in FIG. 2). This is a display example of a list screen of registered spot information displayed on the display 206). That is, the spot information registered with the classification information added by the spot registration process of the flowchart shown in FIG. 5 is displayed on the map display means 103 by the spot registration means 106 (control unit 207 in FIG. 2). Corresponding point information from the classification information in the point information is displayed for each classification (classification 1 to classification 6) in the classification display mode shown in FIG. 8, FIG. 9, FIG. 10, FIG.
[0029]
In FIG. 8, the determination flag (point name) 402 is valid and the parameter of the point name reference parameter 407 is set to the character string “terminal” in the point distribution rule information of classification 1, and based on this point distribution rule information The two pieces of point information are displayed as a list when the lower button “Category 1” is pressed.
[0030]
In FIG. 9, the determination flag (point name) 402 is also valid and the point name reference parameter 407 is set to the character string “airport” in the classification 2 point distribution rule information, and 1 based on this point distribution rule information. The point information is displayed as a list by pressing “Category 2” at the bottom of the screen.
[0031]
In FIG. 10, the determination flag (symbol ID) 405 is valid and the symbol ID reference parameter 410 is the symbol ““! It is set with an ID value indicating “”, and four pieces of point information based on this point distribution rule information are displayed as a list when the lower button “class 3” is pressed.
[0032]
In FIG. 11, the decision flag (telephone number) 404 is valid and the telephone number reference parameter 409 is set as a numeric string “0795” in the classification distribution point information of category 4, and four cases based on this point distribution rule information. The point information is displayed as a list when the lower button “Category 4” is pressed.
[0033]
In FIG. 12, in the point distribution rule information of classification 5, the determination flag (latitude and longitude) 401 is valid, and the longitude and latitude reference parameter 406 is the longitude and latitude “135.30.00W: 34.40.00N” (east longitude 135 degrees 30). 4 points information based on this point distribution rule information is displayed as a list by pressing the lower button “Category 5”.
[0034]
In FIG. 13, the determination flag (address name) 403 is valid and the address name reference parameter 408 is set to the character string “Osaka City” in the point distribution rule information of classification 6, and 5 based on this point distribution rule information. The point information is displayed as a list when the lower button “Category 6” is pressed.
[0035]
In this way, by switching between “Category 1” to “Category 6” of the button at the bottom of the screen, a point list based on different point distribution rule information for each category is displayed. In the example of FIGS. 8 to 13, the classification is performed based on one type of reference parameter for each classification. However, the classification may be performed based on two or more types of reference parameters. For example, the point information may be classified based on the symbol ID reference parameter 410 and the address name reference parameter 408. Further, as shown in the examples of FIGS. 8 and 9, the point information based on different point name reference parameters (terminal, airport) of the same type (point name) is assigned to different classifications (classification 1, classification 2). It may be configured.
[0036]
In the first embodiment, at the time of location registration, the location is assigned and the classification is stored. However, after the location is registered, the location may be classified according to a user instruction. Alternatively, when a classification that is a distribution rule is newly set, changed, or deleted, the classification may be automatically performed for all registered spot information.
[0037]
As described above, according to the first embodiment, a plurality of types of parameters representing attributes of point information to be registered are input according to an operation, and an instruction to display a list of registered point information is input. The information input means 108 and a plurality of types of reference parameters that serve as criteria for determining various point information parameters are stored in advance, and there is commonality between the point information parameters input from the information input means 108 and the reference parameters. If it is determined, the point distribution means 107 that distributes the input point information to the classification corresponding to the content of commonality, and the classification result distributed by the point distribution means 107 are stored as classification information, and the information input means 108 According to the specified classification (one classification from classification 1 to classification 6) included in the list display instruction input by Since the location registration means 106 for displaying the list of location information corresponding to the designated classification on the map display means 103 is provided, the location registered by the user is classified into a genre according to the classification rule set by the user, and the desired location can be easily found. There is an effect that it can be searched, and by setting a classification rule in advance by the user, it is automatically classified into a genre at the subsequent point registration, and there is an effect that the user can save the trouble of classifying each time the point is registered.
[0038]
Further, according to the first embodiment, the point distribution unit 107 determines that there is commonality when the reference parameter is included as a part of the parameters of the input point information. There is an effect that a column and a numeric string can be easily set.
[0039]
Further, according to the first embodiment, when the input point information parameter is a longitude and latitude value, the point distribution means 107 has a predetermined distance (for example, a distance from the longitude and latitude value of the reference parameter). , 100 m), it is determined that there is commonality, and there is an effect that a facility existing in a range near a certain point can be easily searched.
[0040]
Further, according to the first embodiment, when the input point information parameter is a telephone number, the point distribution unit 107 sets the reference number telephone number digit string to the point information parameter numeric string. Since it is determined that there is commonality when it matches the head part, there is an effect that it is only necessary to register, for example, only the area code as the reference parameter.
[0041]
Further, according to the first embodiment, when the input point information parameter is a character string representing a name, the point distribution unit 107 determines that the reference parameter character string is the character string of the point information parameter. Since it is determined that there is a commonality when it matches a part, only a simple character string representing a rough name such as “Terminal”, “Airport”, “Osaka”, etc. is registered as a reference parameter. There is an effect that only it is necessary.
[0042]
Further, according to the first embodiment, the point distribution means is common when the input point information parameter is an image representing a symbol and the reference parameter image matches the point information parameter image. Since it is determined that there is a characteristic, the point information can be classified and registered by an image very easily.
[0043]
Further, according to the first embodiment, when the instruction for changing the reference parameter is input by the information input means 108, the point distribution means 107 updates the stored reference parameter according to the change instruction. There is an effect that it is possible to respond flexibly even when there is a change in the area where the vehicle travels or the user.
[0044]
【The invention's effect】
As described above, according to the present invention, the in-vehicle navigation device inputs the plurality of types of parameters indicating the attributes of the point information to be registered according to the operation, and the registered in-point information. An information input means for inputting a list display instruction, and a plurality of types of reference parameters serving as criteria for determining various point information parameters are stored in advance, and between the point information parameters input from the information input means and the reference parameters. If it is determined that there is commonality, the point distribution means for distributing the input point information to at least one classification corresponding to the content of the commonality, and the classification result distributed by the point distribution means are stored as classification information. , According to the designated classification included in the list display instruction input by the information input means Since the location registration means for displaying a list of relevant location information on the map display means, the location registered by the user is classified into genres according to the classification rules set by the user, and the desired location can be easily found. The effect and the fact that the user sets the classification rule in advance make it possible to automatically genre at the subsequent point registration and save the user from having to classify each time the point is registered.
[Brief description of the drawings]
FIG. 1 is a block diagram showing functions of an in-vehicle navigation device according to Embodiment 1 of the present invention.
FIG. 2 is a hardware block diagram of an in-vehicle navigation device that realizes the function of FIG. 1;
FIG. 3 is a diagram showing a structure of point information registered in the in-vehicle navigation device according to the first embodiment.
4 is a diagram showing a structure of point distribution rule information in the in-vehicle navigation device according to Embodiment 1. FIG.
FIG. 5 is a flowchart of a spot registration process in the first embodiment.
6 is a detailed flowchart of classification information generation processing in FIG.
7 is a diagram illustrating an example of a distribution setting screen according to Embodiment 1. FIG.
FIG. 8 is a diagram showing an example (classification 1) of a point information list screen in the first embodiment;
FIG. 9 is a diagram showing an example (category 2) of a point information list screen according to the first embodiment;
FIG. 10 is a diagram showing an example (category 3) of a point information list screen in the first embodiment;
FIG. 11 is a diagram showing an example (category 4) of a point information list screen in the first embodiment;
FIG. 12 is a diagram showing an example (category 5) of a point information list screen in the first embodiment;
FIG. 13 is a diagram showing an example (category 6) of a point information list screen in the first embodiment;
[Explanation of symbols]
101 map information acquisition means, 102 position detection means, 103 map display means, 104 route search means, 105 point search means, 106 point registration means, 107 point distribution means, 108 information input means, 201 drive (map information acquisition means), 202 GPS receiver (position detection means), 203 vehicle speed sensor (position detection means), 204 operation switch (information input means), 205 communication device (map information acquisition means), 206 display (map display means), 207 control unit ( Route search means, point search means, point registration means, point distribution means).

Claims (7)

Information input means for inputting a plurality of types of parameters representing the attributes of point information to be registered according to an operation, and for inputting an instruction to display a list of registered point information,
When a plurality of types of reference parameters serving as determination criteria for various point information parameters are stored in advance, and it is determined that there is commonality between the point information parameters input from the information input means and the reference parameters Is a point distribution unit that distributes the input point information to at least one classification corresponding to the content of the commonality;
A list of point information corresponding to the designated classification according to the designated classification included in the list display instruction inputted by the information input means, storing the classification result sorted by the point sorting means as classification information A vehicle-mounted navigation device comprising point registration means for displaying the information on the map display means. The in-vehicle navigation device according to claim 1, wherein the point distribution means determines that there is commonality when a reference parameter is included as a part of parameters of the input point information. The point distribution means is characterized in that when the parameter of the input point information is a longitude and latitude value, it is determined that there is commonality when the distance from the longitude and latitude value of the reference parameter is within a predetermined range. The in-vehicle navigation device according to claim 2. If the input point information parameter is a telephone number, the point distribution means has commonality when the numerical string of the reference parameter telephone number matches the beginning of the numerical string of the point information parameter. The in-vehicle navigation device according to claim 2, wherein the determination is performed. The point distribution means has a commonality when the character string of the reference parameter matches a part of the character string of the parameter of the point information when the parameter of the input point information is a character string representing the name The vehicle-mounted navigation device according to claim 2, wherein the determination is made. The point distribution means is characterized in that when the input point information parameter is an image representing a symbol, the reference parameter image is determined to have commonality when the point parameter image matches the point information parameter image. The in-vehicle navigation device according to claim 1. 2. The in-vehicle navigation device according to claim 1, wherein when the instruction for changing the reference parameter is input by the information input means, the point distribution means updates the stored reference parameter in accordance with the change instruction.

Images