JP2003202228A - Navigation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To predict usable facility by retrieving specific facility in advance because there is a case where the specific facility does not exist in the surroundings and exists at a point where a car passes over already when a driver wants to use the specific facility during running along a guide path. <P>SOLUTION: A system control part 10 of a navigation device is provided with a prediction retrieval processing part 33 for usable facility in addition to various conventional function parts. Genre of use facility specified by a user and retrieval specific value of parameter changed in accordance with running such as use schedule time are inputted from a retrieval condition input part 34. A retrieval condition adaptation point computing part 35 retrieves a point where it is assumed that the car runs at the use schedule time and a point apart from the point by a predetermined distance and retrieves the facility existing at each point of the inputted genre. A processing part 37 for displaying retrieval result data in a chart displays the retrieval results in a chart to enable detailed display of each facility by indicating a display part. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device capable of guiding a vehicle by setting a guide route to a destination or a waypoint, and particularly, by a predicted arrival time at a point on the guide route, The present invention relates to a navigation device capable of searching the number of available facilities.

[0002]

2. Description of the Related Art In a current vehicle navigation system, a CD-ROM storing map data for drawing a map and facility information data for searching facilities,
A map / information storage medium such as a DVD-ROM and this map / information storage medium.
Vehicle position detection for detecting the current position of the vehicle and the azimuth of the traveling direction by a reproduction device that reads data in the information storage medium, a display device that displays a map, a self-contained navigation device such as a distance sensor or a gyro, and a GPS receiver It has a device, reads map data including the current position of the vehicle from the map / information storage medium, draws a map image around the vehicle position on the screen of the display device based on the map data, and displays the vehicle position mark. You can see where the vehicle is currently driving by displaying it on the screen and scrolling the map image according to the movement of the vehicle, or fixing the map image on the screen and moving the vehicle position mark. I try to understand at a glance.

Maps such as CD-ROM and DVD-ROM
The map data stored in the information storage device is divided into longitude and latitude widths of appropriate sizes according to various scale levels, and roads and the like are set as a coordinate set of nodes represented by longitude and latitude. Remembered A road is composed of two or more nodes, and the map data displays roads, buildings, facilities, parks, rivers, etc. on the road layer including a road list, a node table and an intersection node list, and a map screen. Background layers and other map data, and information data for displaying characters and map symbols such as administrative division names such as municipalities, road names, intersection names and facility names.

Further, this navigation device has a route guidance function for allowing the user to easily travel to the desired destination without making a mistake on the road. According to this route guidance function, if you specify the starting point to the destination using the map information and, if necessary, the transit point, you can select the time, distance,
Automatically search for the most suitable route, taking into account conditions such as charges
The searched route is stored as a guide route, and while driving, the guide route is displayed on the map image by changing the color from other routes and making it thicker and displaying it, or the vehicle changes the route on the guide route. When an approaching intersection is approached within a certain distance, the intersection is enlarged and displayed, and an arrow or the like showing the direction to change the course is drawn and displayed on the screen, or voice guidance to turn is used. It is possible to guide people to their destination.

Further, in the navigation device, VI
It is also possible to receive VICS information from the CS information center via radio beacons, optical beacons, or FM broadcasting, import information such as traffic congestion, traffic regulations, search for detours and present new guidance routes depending on the situation. You can do it. Also, due to recent advances in communication technology and the spread of mobile phones, it is necessary to connect to an information center that provides various types of information from navigation devices, and to obtain facility guidance information, weather information, and traffic information at desired points. It can be imported according to.

[0006]

In the navigation device as described above, by using a lot of data recorded on the DVD-ROM in recent years or by using detailed data from the information center as described above, Various kinds of information other than the vehicle guidance can be obtained. Therefore, it is possible to search for facilities near the own vehicle, or to search for various facilities existing in a specific area, and to see the guidance of those facilities as necessary.

Therefore, for example, while searching for a nearby restaurant while driving, a family restaurant,
You can search for your favorite restaurants and restaurants such as Italian restaurants, Chinese restaurants, ramen restaurants, sushi restaurants, etc. Also, when you notice that you are gradually running low on gasoline while you are traveling, search for a nearby gas station, and then search for the type of gas station you are using on a daily basis to find out the current amount of gasoline remaining. You can also consider whether you can go there considering the amount.

[0008] Furthermore, when using a convenience store when wanting to buy food or the like while driving, or when wanting to go to the toilet, etc., such a convenience store is used to withdraw money from a bank. When necessary, a convenience store nearby may be searched and used, and further, a convenience store of a series that is used daily may be searched to determine whether it is available or not.

As described above, it is necessary to use the facilities existing in the surroundings in various situations while the vehicle is traveling, and in that case, it is possible to effectively use the data and the search function of the navigation device. Has become.

However, when there are few facilities available in the surrounding area, such as when driving in a relatively remote area for a long time during a long-distance drive, we would like to eat lunch and find a restaurant nearby. Even if you search, there may not be any restaurants in the vicinity, and you may have to drive to a distant restaurant for a long time. Also, even if there are restaurants, the number is small,
While there is almost no choice, it is sometimes better to go back because there were many restaurants in the city that passed a while ago, and if you knew such things in advance, when you went through that city I was supposed to eat around there,
I sometimes regret.

Further, even if a gas station is searched for when the amount of gasoline is running low, it does not exist on the planned traveling route and must be returned, or the vehicle must travel far from the route. Sometimes it doesn't. In addition, when you want to eat at a sushi restaurant while driving, there are often various restaurants nearby but no sushi restaurant. Furthermore, when using a card that can be used only in a specific line, such as a gas station, a convenience store, or a bank, facilities of that line may not exist in the vicinity.

[0012] Even when it is known that lunch must be taken in the middle of the drive before leaving for the drive, this is the time for lunch and the place where the restaurant is located. While I may want to know if there are many restaurants or if there is a desired restaurant, it is difficult to find the estimated time of arrival on the planned route by myself, especially when driving a long distance, and an incorrect prediction is made. Often do. Furthermore, it is difficult to find out how many restaurants exist at each point and what kind of restaurants there are.

Further, for example, when the remaining amount of gasoline is almost known, the distance that can be traveled with the fuel is roughly known. Therefore, it is necessary to enter the point where the gas station is located near the distance on the planned travel route. You may want to know if you will run out of gas if you do not do it, but it is difficult to calculate the prediction yourself.

Therefore, it is a main object of the present invention to provide a navigation device capable of easily and accurately making a utilization plan of various facilities on a planned traveling route.

[0015]

In order to solve the above-mentioned problems, the navigation device according to the present invention changes depending on the genre of the search facility existing near the guide route designated by the user and the travel along the guide route. A search condition input section for inputting a search condition including a search specific value of a parameter, a point matching the search condition input in the search condition input section, and a point separated from the point by a predetermined parameter value. A search condition conforming point calculation unit for calculating, a facility searching unit for searching facilities existing near each point calculated by the search condition conforming point calculating unit, and a chart for displaying the result of the search by the facility searching unit in a chart And a processing unit.

Further, in another navigation device according to the present invention, the parameter that changes according to the traveling is at least one of a running time, a time from the current time, a distance from the current point, and a gasoline remaining amount. That is, a specific value of each parameter is input to the search condition input section.

Further, in another navigation device according to the present invention, a facility detailed information display means for displaying information on a facility included in the chart portion according to a user's instruction with respect to the chart portion displayed by the charting processing unit. It is equipped with.

Further, in another navigation device according to the present invention, the facility detailed information display means is provided with a guidance requesting means, and when the facility requested by the guidance requesting means is approached, the existence of the facility is guided. It is equipped with means.

Further, in another navigation device according to the present invention, the value of the predetermined parameter for specifying a point that is apart from the point satisfying the search condition by the value of the predetermined parameter is arbitrarily set by the user. It can be set.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a functional block diagram showing an embodiment of a navigation device according to the present invention. As shown in FIG. 1, this vehicular navigation device performs arithmetic processing C
Various functional units and various devices are connected to a system control unit 10 including a PU, a ROM in which a program is recorded, a RAM in which data is temporarily recorded, and the like, so that the navigation device operates comprehensively. .

In this example of the device, a GPS reception measuring unit 17 for receiving a GPS signal to measure the current position is provided, and a self-contained navigation measuring unit 18 including a vehicle distance sensor 19 and an angle sensor 20 is provided. System control unit 10
Then, based on this signal, the position measuring unit 16 generates a signal indicating the current position and the traveling direction of the vehicle. With this current position signal, the map / facility information reading unit 21 reads the map data in the vicinity of the current position of the vehicle from the map and the map / facility information storage unit 22 recording various related information such as facility information, and reads the read map. A predetermined map is formed by the map drawing unit 38 based on the data, and a map image around the vehicle position is 3D
The image is output to the image display device 11 by display or the like and drawn on the monitor 12 together with other images. In addition, by displaying the vehicle position mark on the map image and scrolling the map image according to the movement of the vehicle, or fixing the map image on the screen and moving the vehicle position mark, etc. I try to know at a glance if I am running.

The map data stored in the map / facility information storage unit 22 is divided into longitude and latitude widths of appropriate sizes according to various scale levels, and roads and the like are represented by longitude and latitude. It is stored as a coordinate set of the selected nodes. A road is composed of two or more nodes, and the map data displays roads, buildings, facilities, parks, rivers, etc. on the road layer including a road list, a node table and an intersection node list, and a map screen. Background layers and other map data, and information data for displaying characters and map symbols such as administrative division names such as municipalities, road names, intersection names and facility names.

Therefore, when the map / facility information storage unit 22 has data relating to various facilities such as restaurants and parking lots, it can be read out and used, and can be displayed together with the map. In this navigation device, the external information input unit 23 is provided, and the VI
The CS receiver 24 can be connected to capture traffic information, and the mobile phone 25 communicates with the information center via the Internet or directly via a telephone line, and various kinds of detailed facility information and the like can be transmitted as necessary. Information can be imported.

In the navigation device, in order to allow the user to easily travel to the desired destination without making a mistake on the road, the guide route calculation unit 26 obtains the guide route and records it in the guide route memory 27. . With this route guidance function, the most appropriate route from the origin to the destination using the map information, and of the routes that pass through the route points input as necessary, considering the conditions such as time, distance, and charge To search automatically. Further, the searched route is stored as a guide route, and the guide route is displayed on the map image while being drawn by changing the color from other roads and making it thicker while driving. In addition, when a traffic jam or the like occurs while driving, the guidance route is searched again to find a new guidance route.
It is rewritten to 7 and recorded. The data of the guide route memory is used as basic data for calculating, for example, at which point on the guide route the vehicle exists at a specific time in the available facility predictive search processing unit 33 described later.

Further, for example, a remote controller 29, a touch panel 30 of the image display device, and an operation switch 31 are provided so that the user can arbitrarily set various functions of the navigation device and can operate them arbitrarily. Is provided with an operation signal input unit 28 including a voice recognition device 32 for recognizing a voice such as a user's operation instruction, which has been widespread in recent years, and outputs a signal to the system control unit 10. From the operation signal input unit 28, in the available facility predictive search process described later, various operation signals such as input of various search conditions and instructions for displaying detailed information of the facility are input by various methods including voice recognition. Is able to.

Further, an intersection guidance screen forming section 15 is provided for displaying the intersection guidance on the screen, and the intersection guidance can be output as voice from the speaker 14 by the operation of the voice output device 13. As a result, when the vehicle approaches the intersection on which the route should be changed on the guide route within a certain distance, the intersection is enlarged and displayed, and an arrow or the like indicating the direction to change the route is drawn and displayed on the monitor 12. Furthermore, the user can be guided to the destination by instructing the user to turn left or right by voice from the speaker 14.

In addition to the conventionally used navigation function as described above, this navigation device is provided with an available facility prediction search processing unit 33, in which the search condition input unit 34 is operated from the operation signal input unit 28. For example, the genre of a restaurant or the like, the desired time of use, etc., entered by the user are entered from here. Further, the search condition matching point calculation unit 35 searches for a matching point based on the conditions such as the desired time of use input from the search condition input unit 34. In that case, the time from the current time to the desired use time is calculated, the passing points are read from the guide route memory 27, the required time from the current position at each point is calculated, and the time up to the desired use time is determined most. A suitable point is set as a search point. At that time, for example, one hour before and after the desired use time is set as the reference search time, and the passing point at that time is also obtained.

The available facility predictive search processing unit 33 is provided with a facility search unit 36, and conditions such as the genre and the like input from the search condition input unit 34 at a point that matches the search condition obtained as described above. Search for and extract compatible facilities. In that case, the reference search time is also searched, and similarly facilities that meet the conditions such as the genre are extracted. In the search result data chart processing unit 37, chart processing such as graphing is appropriately performed based on the data based on the result searched by the facility search unit 36, and the result is output from the image display device 11 to the monitor 12 and displayed. To do.

In the navigation device composed of the respective functional blocks that perform the above-mentioned functions, the available facility predictive search, which is the main function of the present invention, is operated in sequence along the operation flow shown in FIG. 2, for example. be able to. This operation will be described below with reference to the functional block diagram of FIG. 1 and the display screen examples shown in FIGS.
In the available facility predictive search process shown in FIG. 1, a guide route is first set (step S1) and used as basic data for various subsequent operations. FIG. 3A shows an example of a screen displaying all the guide routes from the current vehicle position A to the destination P when the guide route is set in this way, and FIG. Shows an example of a screen in a steady state when traveling along the guide route.

After the guide route is set, it is determined whether or not the user inputs an instruction to start the available facility prediction search (step S2). If the start instruction has not been input yet, this operation is repeated to wait. In step S2, when it is detected that the user has input a search start instruction for predicting available facilities, for example, by a confirmation operation on the operation selection screen of this function, the operation flow is substantially started, First, the user performs a genre designation input of a facility to be searched, that is, a facility to be used (step 3).

At this time, for example, the input can be made along the screen as shown in FIG. 4A. In the figure, the "meal" genre is selected from the various genres, and further the detailed expansion genre is selected. An example in which "Family restaurant" is selected is shown. Note that, regarding this subdivision genre, for example, when there are more series of each restaurant in this family restaurant and it is possible to search for this,
It is also possible to display the screen of the detailed expansion at the time of the above selection and specify the family restaurant of the desired series displayed on the screen to perform the search.

Next, as a condition for performing a search, a scheduled time to use the facility of the specified genre, an elapsed time from the present, a distance from the current position where the facility is desired to be used, and a remaining amount of gasoline are searched. Specify various conditions you want. All of these values can be said to be “parameters that change due to traveling along the guide route”, and the value to be searched for for each parameter can be called the search specific value for each parameter.

As described above, since various modes of the search condition can be considered according to the user's request, for example, a screen for inputting a search method as shown in FIG. Be able to choose any method from. Therefore, the search item as shown in FIG. 4 (b) is an example of the above-mentioned "parameter that changes due to traveling along the guide route". The illustrated embodiment shows an example in which “1. Designate time” is selected.

On the screen for inputting the search conditions as described above, "family restaurant" is selected in the genre of "meal" in FIG. 4 (a), and then "designate time" is selected in FIG. 4 (b). At this time, for example, a screen for designating and inputting the time as shown in FIG. 5A is displayed, the left and right scroll keys are used to select each input portion, and the up and down scroll keys are used to scroll the numbers displayed on the selected input portion. The desired value can be displayed by performing, etc., and can be entered by confirming it. As a result, a parameter that changes due to traveling along the guide route is selected, and the specific value of the parameter is input. In the example shown in the figure, an example in which it is specified to be used around 12:00 is shown. As a condition for searching for facilities, for example, within 1 km or 2 km from the guide route in advance.
The range may be arbitrarily input by the user, such as “within”.

The example shown in FIG. 5A shows an example in which the time before and after the specified time can be further specified and the search time interval can be specified, if necessary.
When no input is made in this portion, it is possible to set, for example, to automatically search for a time 1 hour before and after the designated time. By providing in advance means for making detailed settings for the user in this way, the characteristics of each genre, whether the road is a general road or a highway,
Alternatively, it is possible to perform a search corresponding to the vehicle situation, such as considering the state of traffic jam.

When the "2. Designate the time from the present" method is selected in the input selection of the search method of FIG. 4B, for example, as shown in FIG. Make sure to enter the time, and like the above,
If necessary, specify the search time before and after that, and specify the search time interval. If you do not specify these, you will automatically get 1 hour before and after the specified time.
It can be set to search every hour.

Similarly, in the case where the "3. specify the distance from the current point" method is selected in the input selection of the search method of FIG. 4 (b), for example, as shown in FIG. 6 (a). Input the distance from the current point, and specify the search distance before and after that, and the search distance interval, if necessary. When these are not specified, it is possible to set a search every 10 km for points 20 km before and after the specified distance.

Further, in the input selection of the search method of FIG. 4 (b), when the method of “4. Specify by the remaining amount of gasoline” is selected in order to know the gasoline refueling point in advance, for example As shown in 6 (b), with the fuel tank capacity of the vehicle being input in advance, for example, 50 liters, in the simulated display portion of the displayed fuel level meter, for example, using the left and right scroll keys. Settings can be made by moving the cursor to the current fuel gauge level.

After the search conditions such as time and distance are designated and input in various modes as described above, the search is executed (step S5), and then the search result is displayed in a chart (step S6). This search result can be displayed in various ways. For example, in FIG. 7A, the screen is divided into two, the search result screen is displayed side by side with the map screen, and the bar graph is displayed. An example is shown. In that case, the name of the point and the number of cases where the facility exists are displayed for each estimated arrival time. In addition, when displaying the graph, it is possible to display it more visually effectively, for example, by stacking the pictures of the store for the number of cases, but it is also possible to search by displaying the number indicating the number of cases at each time. The results can be shown.

In the example shown in FIG. 7A, the user wants to have lunch at the family restaurant at 12:00, and as a result of the above-mentioned search, the village C scheduled to arrive at 12:00. There is nothing you want,
One hour before that, in B city, it is relatively close to the guide route.
It is shown that there are 0 family restaurants, and conversely, there are 3 family restaurants in D town, which passes 1 hour later at 13:00. This allows users to schedule meals in either B City or D Town in advance, so that when they pass through Village C around 12:00, there is no suitable restaurant around them and there is a rush. Nothing happened,
You can also have a meal at the restaurant of your choice in B city, which is in front of C village.

The display of the search results as described above is as shown in FIG.
In addition to the search specifying the time as shown in (a), the search result can be similarly displayed in the search specifying the time from the present as shown in (b) of FIG. The same can be displayed when displaying the result of the search that specifies the distance from the current point as shown in (a).

Further, in the search designated by the remaining amount of gasoline as shown in FIG. 6 (b), for example, it is displayed as shown in FIG. 7 (b). In this display example, the gasoline remaining amount display is divided from 5 liters to 0 for every 5 liters, and the number of gas stations existing along the vicinity of the guide route running during that period is displayed. As a result, the gasoline level indicator will go through while it is decreasing from 10 liters to 5 liters. If you do not refuel using a gas station near the road in City B, there will be no gas stations nearby thereafter. This allows the user to make a plan for refueling when passing through B city in advance.

After the tabulated display of the search results as described above, it is judged whether or not there is a request for detailed display of the searched facility (step S7). When there is no such request, the process returns to step S2 again, The same operation as above is repeated. Further, in step S7, for example, by the user placing the cursor on each bar graph portion and pressing the confirm button,
When it is determined that there is a request for detailed display of the facility of the search result, the detailed content of each facility included in the instructed portion can be read from the map / information storage unit 22 of FIG. 1 and displayed. (Step S8).

In this case, for example, as shown in FIG. 8 (a), a search result detailed display example of a sushi restaurant, the search conditions are shown, and the sushi restaurants searched there can be displayed in order. There is. By displaying like this,
The user can easily select the sushi restaurant to actually use by using the data of the search result. In addition, when displaying the detailed information of the facilities, each facility may be displayed as a list, and the above detailed display may be performed only for the facilities instructed by the user from the list. .

Similarly, when displaying the details of the search results for the gas station, referring to the screen display as shown in FIG. 8B, for example, the detailed display of each facility is used to check the regular holidays and business hours, and there is no mistake. You can make a travel plan. In addition, this example shows an example in which a check is given to "I will guide you when approaching". By giving such a check, when approaching this gas station, it is divided into multiple times. I will guide the driver to avoid passing through here.

The present invention can be carried out in various modes as described above. In addition, for example, when the user clicks the graph portion on the search result display screen, the facilities included therein are displayed on the map. Etc., and can be carried out in various modes. Further, as the information of the facility to be used, it is possible to use not only the information recorded on the DVD or the like but also the information appropriately fetched from an external information center. Furthermore, when entering various conditions such as search conditions,
It is possible to input in various modes, including the voice recognition device 32 as shown in FIG.

[0047]

In order to solve the above-mentioned problems, the navigation device according to the present invention searches for the genre of the search facility existing in the vicinity of the guide route designated by the user and the parameter that changes due to traveling along the guide route. A search condition input unit for inputting a search condition including a specific value, a search condition that matches a search condition input in the search condition input unit, and a search condition for calculating a position separated from the position by a predetermined parameter value. A matching point calculation unit, a facility search unit that searches for facilities existing near each point calculated by the search condition matching point calculation unit, and a charting processing unit that displays the results searched by the facility search unit in a chart. As a result, the search results can be displayed in a chart including points that meet the search conditions and points that are apart from that point by the value of a predetermined parameter. Use is facilitated. In addition, for example, when you want to eat at a restaurant, it is possible to reliably prevent unexpected situations such as the absence of restaurants in the vicinity, making it easy to plan the use of various facilities on the planned travel route, And it becomes possible to make accurate.

Further, in another navigation device according to the present invention, the parameter that changes according to the running is at least one of a running time, a time from the current time, a distance from the current point, and a remaining amount of gasoline. Since the specific value of each parameter is input to the search condition input section, an appropriate parameter is selected according to the usage mode of various facilities such as the use of a restaurant and the use of a gas station. By entering the specific value of the parameter, it becomes possible for the user to reliably search for the desired facility.

Further, in another navigation device according to the present invention, facility detailed information display means for displaying information on a facility included in the chart portion according to a user's instruction with respect to the chart portion displayed by the chart processing unit. Because,
The detailed information of the facility can be immediately displayed from the diagram display of the facility obtained as a result of the search, and the facility to be actually used can be easily selected.

Further, in another navigation device according to the present invention, the facility detailed information display means is provided with a guidance requesting means, and when the facility requested by the guidance requesting means is approached, the existence of the facility is guided. With the means,
For example, when the user approaches a restaurant or a gas station to be used, the presence of the facility is notified, and the user can surely use the facility.

Further, in another navigation device according to the present invention, the value of the predetermined parameter for specifying the point that is apart from the point that meets the search condition by the value of the predetermined parameter is arbitrarily set by the user. Since it can be set, it becomes possible for the user to input detailed search conditions, and it is also possible to input appropriate conditions according to various conditions, such as changing the conditions according to the use of general roads and expressways. , It is possible to perform an appropriate facility search.

[Brief description of drawings]

FIG. 1 is a functional block diagram of an embodiment of the present invention.

FIG. 2 is an operation flow chart of the embodiment.

FIG. 3 is an example of a display screen when traveling along a guide route in the embodiment of the present invention, FIG. 3A is a diagram showing an example of a map screen displaying the entire guide route, and FIG. [Fig. 4] is a diagram showing an example of a display screen in a steady state where the vehicle is traveling along the guide route.

FIG. 4 is a diagram showing a screen display example at the time of available facility predictive search in the embodiment, (a) is a diagram for designating a genre of facility, and (b) is a screen for inputting a search method. It is a figure which shows an example.

FIG. 5 is a diagram showing an example of a condition input screen at the time of available facility predictive search in the embodiment, (a) shows an example of a screen for specifying a time, and (b) shows a time from the present time. It is a figure which shows the example of the screen to specify.

FIG. 6 is a diagram showing an example of a condition input screen at the time of searching for available facilities in the embodiment, (a) shows an example of a screen for designating a distance from the current point, and (b) shows (b). It is a figure which shows the example designated by the remaining amount of gasoline.

FIG. 7 is a diagram showing an example of a screen displaying a result of the available facility search in the embodiment, and FIG. 7A shows an example of a screen displaying a search result of a restaurant on the condition of a specific time. , (B) are diagrams showing an example of a screen displaying a search result of a gas station on the condition of the remaining amount of gasoline.

FIG. 8 is a diagram showing an example of a screen for displaying details of available facilities in the embodiment, and (a) shows details of facilities included therein based on a search result of a sushi restaurant on the condition of a specific time. The example of the screen which is displaying is shown, (b) is the example of the screen which is displaying the detail of the gas station contained in it based on the search result of the gas station when the remaining amount of gasoline is a specific value. FIG.

[Explanation of symbols]

10 System control unit 11 Image display device 12 monitors 13 Audio output device 14 speakers 15 Intersection guidance formation section 16 Position measuring unit 21 Map and information reading section 22 Map / information storage 23 External information input section 26 Guidance route calculator 27 Guided path memory 28 Operation signal input section 33 Available Facility Prediction Search Processing Unit 34 Search condition input section 35 Search conditions Appropriate point calculation unit 36 Facility Search Department 37 Search Result Data Chart Processing Unit 38 Map drawing section

Continued front page    F term (reference) 2C032 HB15 HB22 HB23 HB24 HB25                       HC08 HC14 HC15 HC16 HC22                       HC24 HC25 HC31 HD03 HD07                       HD16 HD24                 2F029 AA01 AB01 AB07 AC02 AC09                       AC14 AC18                 5H180 AA01 BB02 BB04 BB05 CC12                       EE18 FF04 FF05 FF14 FF22                       FF25 FF27 FF35 FF38

Claims (5)

[Claims] 1. A search condition input unit for inputting a search condition including a genre of a search facility existing in the vicinity of a guide route designated by a user and a search specific value of a parameter that changes due to traveling along the guide route, A search condition matching point calculation unit that calculates a position that matches the search condition input in the search condition input unit and a position that is apart from the position by a predetermined parameter value; A navigation device comprising: a facility search unit that searches for a facility existing near each point; and a chart processing unit that displays a result of the search performed by the facility search unit as a chart. 2. The parameter that changes according to the running is at least one of a running time, a time from a current time, a distance from a current point, and a remaining amount of gasoline. The navigation device according to claim 1, wherein a specific value of the parameter is input. 3. The facility detailed information display means for displaying information on a facility included in the chart portion according to a user's instruction with respect to the chart portion displayed by the charting processing unit. The described navigation device. 4. The facility detailed information display means includes guidance requesting means, and means for guiding the existence of the facility when approaching the facility requested by the guidance requesting means. The described navigation device. 5. The value of the predetermined parameter that specifies a point that is apart from the point that matches the search condition by a value of a predetermined parameter can be arbitrarily set by the user. 1. The navigation device according to 1.