JP2004233264A - Navigation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation system that displays effectively and suitablely facilities on various road maps of a reduced scale. <P>SOLUTION: The navigation system detects usage conditions of the facilities, classifies various facilities by categories of business, sets display priority at each category in response to the usage conditions, refers a table set in accordance with the display priority on the maximum scale of the road map allowing facility display at each category, determines the category of the facilities displayed on the road map on the basis of the reduced scale of the displayed road map and the display priority at each category, and displays the facilities belonging to the category on the road map. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a navigation device.
[0002]
[Prior art]
2. Description of the Related Art There has been known a navigation apparatus in which the use frequencies of various facilities are stored, and landmarks of the facilities are displayed on a map according to the use frequencies (for example, see Patent Document 1).
[0003]
Prior art documents related to the invention of this application include the following.
[Patent Document 1]
Japanese Patent Application Laid-Open No. H11-160088
[Problems to be solved by the invention]
However, in the above-described conventional navigation device, only the landmarks of the facilities that are frequently used in the past are displayed preferentially, and there is a problem that the appropriate facility display is not necessarily performed on the display scale of the road map. is there.
For example, if a gas station was the facility with the highest frequency of use in the past, the gas station will be displayed on the wide-area map at the largest scale. The visibility of other important facility displays will be hindered.
[0005]
The present invention provides a navigation device that displays an effective and appropriate facility on a road map of various scales.
[0006]
[Means for Solving the Problems]
The present invention detects the use status of facilities, classifies various facilities by type of industry, sets display priorities for each type of industry according to the use status of facilities, and allows a road map to permit facility display for each type of industry. By referring to a table in which the maximum scale is set according to the display priority, the type of facility to be displayed on the road map is determined based on the scale of the displayed road map and the display priority for each type of industry, and Are displayed on the road map.
[0007]
【The invention's effect】
According to the present invention, an effective and appropriate facility display can be performed on a road map of various scales.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 shows a configuration of an embodiment. The control unit 1 includes a CPU, a RAM, a clock, an interface, and the like, and displays a road map and various information, guides the user to a destination, and the like. The GPS receiver 2 receives a signal from a GPS satellite and calculates a current position. The map database 3 is composed of a storage medium such as a CD-ROM and a reading device therefor, and stores road map data according to the scale together with the hierarchical attributes required for the search. The facility database 4 is composed of a storage medium such as a CD-ROM and a reading device thereof, and stores facility data to be displayed on a road map together with attributes necessary for search such as position information and business type. The road map database 3 and the facility database 4 may be stored in the same storage medium.
[0009]
The storage device 5 is configured by a memory such as a RAM and a ROM, and stores a user's usage status of various facilities input from an operation unit 7 and an ignition sensor 8 described later. Here, the usage status of the facility includes a past usage history, a future usage schedule, a usage count, a usage mode, and the like. Details of the use form of the facility will be described later.
[0010]
The display unit 6 includes a liquid crystal display, a display control circuit, and the like, and displays a road map and various information such as facilities on the road map. The operation unit 7 includes operation members such as switches and joysticks, a voice input device, and the like, and is used by a user to perform various input / output operations such as destination setting. The ignition sensor 8 detects an operation position of an ignition key (not shown).
[0011]
FIG. 2 shows an example of a conventional display of a standard map according to a reduced scale. (A) shows a display example of a road map at a scale of 1/3000 and various facilities, and (b) shows a display example of a road map at a scale of 1/25000 and various facilities. Many types of facilities are displayed on the small-scale detailed map (a), while only the minimum important facilities are displayed on the large-scale wide-area map (b).
[0012]
The facility database 4 stores facility position data as shown in FIG. The facility location data includes the location (longitude X and latitude Y), name, business type, and the like of each facility.
[0013]
The facility database 4 also stores industry-specific data as shown in FIG. The industry-specific data includes display priority, average stop time, magnification, display scale (standard scale and maximum scale), related industries, and remarks of various industries. Each value of the industry-specific data shown in FIG. 4 is an example, and these values are calculated based on statistical information, distribution density, facility scale, and the like. Further, the type of business may be a hierarchical structure.
[0014]
In FIG. 4, the display priority is a variable independent value that increases or decreases according to the usage status of each type of industry, where the usage status of the aforementioned facility is defined as the usage status of the type of industry to which the type belongs. Used to determine whether display is possible. In this embodiment, the maximum value is 100 and the initial value is 50. The value of the display priority shown in FIG. 4 indicates the value of the temporary point updated according to the facility use status of the user. As will be described later in detail, facilities with high publicity such as administrative facilities and stations are special facilities or special types of business, and the value is not changed according to the usage status of the user.
[0015]
The average stop time indicates a general stop time when using the facility, and is determined based on statistical information or the like. When the vehicle stops at a certain facility, the current position detected by the GPS receiver 2 is compared with the road map in the map database 3 and the facility position data in the facility database 4 to specify the facility, and the ignition sensor 8 is turned off. If set to, it is determined that the vehicle is stopped.
[0016]
The magnification is a value that is multiplied by an additional score of the display priority, which will be described later, and is determined in consideration of the general usage frequency and distribution status of the type of business. For example, if the magnification of the convenience store is a and the magnification of the wedding hall is b, a <b should be satisfied.
[0017]
The standard display scale indicates how far the facility of that type of business is displayed on the wide-area map when the display priority is the initial value (50 in this embodiment). Further, the maximum display scale indicates how far the facility of that type of business is displayed on the wide area map when the display priority is the maximum value (100 in this embodiment). In other words, if the scale of the display map is increased toward the wide area when the display priority is the maximum value, facilities of that type of business are displayed on the map up to the maximum display scale, but the maximum display scale is Facilities of that type will not be displayed on the wide area map.
[0018]
The maximum scale of the road map permitting facility display for display priorities between the initial value 50 and the maximum value 100 is preset for each type of business so that the maximum scale increases in proportion to the increase in display priority. . In addition to the standard scale and the maximum scale for each type of business described above, the facility database 4 stores a table in which the maximum scale of a road map for which facility display is permitted for each type of business is set according to the display priority.
[0019]
On the other hand, the minimum display priority that does not permit facility display on all scale maps is also set in advance for each type of business.
[0020]
Related industries indicate industries related to that industry. When the user takes an action for a certain facility, the display priority may be added to the facility of the related business. The remarks indicate conditions specific to each industry. For example, in the case of a ski resort, since there is demand only in winter, conditions such as not displaying during off-season are set.
[0021]
The storage device 5 stores an addition score table of display priorities for use forms of facilities (including business types) as shown in FIG. In FIG. 5, when the user sets a certain facility as the destination, the display priority of the type of business of the facility is set to 10 points. It is assumed that the number of display priority addition points is eight. When the related business of a certain facility is set as the destination, for example, when the user sets the bookstore as the destination, as shown in FIG. The number of points to be added is five.
[0022]
If the user stops at a certain facility for less than the average stop time, the display priority of the type of business of the facility is added to two points, and if the stop time is longer than the average stop time, The number of points to be added to the display priority of the type of business is three. When the vehicle stops at a facility in a related business of a certain facility, for example, when the user stops at a record store, as shown in FIG. The score is one point. Furthermore, when the user browses the telematics information on a certain facility, the number of points added to the display priority of the type of business of the facility is set to two. The use form of the facility (including the type of business) and the number of points to be added to the display priority are not limited to those shown in FIG.
[0023]
The control unit 1 constantly monitors the facility use operation of the user performed by the operation unit 7 and the ignition sensor 8, and starts the display priority addition determination process shown in FIG. 6 when the facility use operation is performed by the user. I do. In step 1 of FIG. 6, it is confirmed whether the facility to be used is a home or a work location stored in the storage device 5. Since the home or work location is a special facility, and the display priority is not updated, the process ends if the facility to be used is the home or work location.
[0024]
If the facility to be used is not at home or work place, the process proceeds to step 2 to check the related industry of the facility to be used. If there is a related business, the process proceeds to step 3 and a predetermined display priority is added to the related business. For example, when the facility to be used is a bookstore, a predetermined display priority is added to a library which is a related business of the bookstore as shown in FIG.
[0025]
In step 4, it is confirmed whether or not the facility to be used is a facility or a type of business for which the user is set to always display or always not display. In the case where settings such as always-display or always-not-display have been made for the target facility or the type of business to which the target facility belongs, the processing is terminated because it is not necessary to update the display priority. If the display setting has not been made for the facility to be used or the type of business, the process proceeds to step 5, and it is confirmed whether the facility to be used or the type of business is a special facility or special type of business stored in the storage device 5 in advance. If the facility to be used or the type of business is a special facility or special type of business, the display priority need not be updated, and the process ends. If the target facility is neither a special facility nor a special type of business, the process proceeds to step 6.
[0026]
In step 6, the display priority is added to the type of business to which the facility to be used belongs. In this embodiment, assuming that the addition point of the display priority for the use mode shown in FIG. 5 is P and the magnification for the business type of the target facility shown in FIG. 4 is M, the display priority of the business type of the target facility is P × M points are added. If there are exceptional conditions and the like in the usage form and the type of the facility to be used, the display priority addition points are calculated in consideration of those conditions.
[0027]
On the other hand, the display priority of each business type set by the above-mentioned addition processing is subtracted at a constant cycle. In this embodiment, the subtraction point of the display priority for one cycle is calculated as follows. Assuming that the number of effective stops at all facilities in one cycle is N, and the magnification of the type of business to be subtracted is M, N / M points are subtracted from the display priority in this cycle. Note that the number of effective stops is the number of times obtained by subtracting the number of stops at which a facility to be used after stopping at a residential area or a parking lot, or the number of stops at home or work place is excluded from the total number of stops during one cycle. Further, the length of one cycle may be arbitrarily set to an appropriate period, for example, one week, arbitrarily for all types of business, or an appropriate period may be set for each type of business.
[0028]
The display priority subtraction process will be specifically described. Now, the display priority subtraction cycle is set to one week, during which the number of effective stops N is 21 times, the number of stops at the bookstore is 5 times, the current display priority of the bookstore is 50, and the magnification of the bookstore is 3 , When the display priority addition score due to a short stop is 2, the bookstore display priority addition score is:
(Equation 1)
Addition points 2 x magnification 3 x 5 times = 30 points, and the subtraction points in this cycle are:
(Equation 2)
The number of effective stops 21 / magnification 3 = 7 points. Therefore, the current bookstore display priority is
[Equation 3]
Initial display priority 50 + addition point 30-subtraction point 7 = 73 points. If you have n’t used the bookstore for a week,
(Equation 4)
Initial display priority 50−subtraction point 7 = 43 points.
[0029]
The display priority of each type of business is constantly updated to the latest value by repeating the above-described addition processing and subtraction processing. The higher the display priority, the more the facility of that type of business is displayed on a larger-scale wide-area map. On the other hand, when the display priority is lower than the above-described minimum value, the facility of the business type is not displayed on the maps of all reduced scales.
[0030]
The display form of the facility on the map is a name of the facility, a landmark such as a symbol or a graphic indicating the facility, or a combination thereof.
[0031]
FIG. 7 shows a map (a) at a scale of 1/3000 and a map (b) at a scale of 1/25000 when the display priority of each type of business is the value shown in FIG. In FIG. 7, since the maximum scale of a ski resort having a display priority of 70 is 1 / 1,000,000, the detailed map (a) having a scale of 1/3000 and the wide-area map (b) having a scale of 1/25000 can be obtained only in winter. Is also displayed. Further, since the bookstore having the display priority of 80 has the maximum scale of 1 / 50,000, it is displayed on the detailed map (a) with the scale of 1/3000 and the wide area map (b) with the scale of 1/25000.
[0032]
On the other hand, a ramen restaurant with a display priority of 90 higher than that of a ski resort has a maximum scale of 1/25000, so it is displayed on the detailed map (a) with a scale of 1/3000, but a wide area map with a scale of 1/25000. (B) is not displayed. In addition, hospitals, libraries, liquor stores, supermarkets, and pharmacies displayed on the detailed map (a) with a scale of 1/3000 are not displayed on the wide area map (b) with a scale of 1/25000.
[0033]
Next, an exception condition when the display priority is updated will be described. First, the display priority is not added to or subtracted from the home or work location set by the user even if it is a store or the like. If the user has not set the home and the work place, the place where the vehicle stops for 6 hours or more almost every day is defined as the home, and the point where the vehicle stops 3 to 5 days a week for 3 hours or more is defined as the work place.
[0034]
In addition, facilities such as railway stations and airports that are highly public and serve as a guide for map recognition, and hospitals, police, fire departments, and various government agencies may be urgently used. In this case, the display priority is not changed and the preset initial value is maintained. In the display example shown in FIG. 7, the hospital and the post office are displayed on the detailed map (a), and the name of the railway station and the line number of the road are displayed on the wide area map (b).
[0035]
Furthermore, if the display priority of a facility such as a beach or a ski resort that is closely related to the season is lower than the initial value when entering the season, the display priority is reset to the initial value.
[0036]
As described above, the user can operate the operation unit 7 to set display or non-display for any type of business or facility. The display priority is fixed for the type of business for which display or non-display is set by the user, and the display priority is not added or subtracted. In addition, the display priority of a facility set to be displayed or hidden by the user is fixed, and the display priority is not added or subtracted, but the display priority of the type of business to which the facility belongs is used. Each time the display priority is added, the display priority is subtracted every cycle.
[0037]
As described above, in one embodiment, the facility use status is detected, various facilities are classified by industry, and the display priority is set for each industry according to the facility use status, and the facility display is performed for each industry. The type of facility to be displayed on the road map based on the scale of the displayed road map and the display priority for each type of industry, with reference to the table that sets the maximum scale of the road map that allows Is determined, and the facilities belonging to that type of business are displayed on the road map, so that effective and appropriate facilities can be displayed on the road maps of various scales.
[0038]
According to one embodiment, the number of points added according to the use state of the facility is multiplied by a preset magnification for each type of business, and the added point is added to the display priority. And an appropriate facility according to the general use frequency and distribution status of the facility. In addition, when adding the display priority, the display priority of the type of business related to the type of business to which the display priority is added is also added. It can be displayed, and convenience is improved.
[0039]
According to one embodiment, a subtraction score is obtained based on the usage status of facilities at predetermined intervals and a magnification preset for each type of business, and is subtracted from the display priority. Changes can be accurately grasped, and facilities that match the current usage status can be displayed.
[0040]
According to one embodiment, when the display priority is lower than a preset value, the facility display of the business type is not performed, so that facilities that do not match the current usage status of the user are displayed uselessly. Can be prevented, and the visibility of the road map can be improved. In addition, the addition and subtraction of display priorities are not performed for predetermined special facilities or business types, so hospitals expected to be used urgently, frequently used homes and workplaces, public Facilities such as railway stations and administrative agencies with a high level of reliability can always be displayed with a preset display priority.
[0041]
In one embodiment, the operation unit 7 for setting display or non-display of an arbitrary facility regardless of the display priority is provided, so that display or non-display of a specific facility can be determined by the user's will. it can.
[0042]
The correspondence between the components of the claims and the components of the embodiment is as follows. That is, the display unit 6 is a display unit, the control unit 1, the operation unit 7, and the ignition sensor 8 are use state detection units, the control unit 1 is a standard priority setting unit and a display control unit, and the facility database 4 is a maximum scale storage. The operation unit 7 constitutes an operation member. Note that each component is not limited to the above configuration as long as the characteristic functions of the present invention are not impaired.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of an embodiment.
FIG. 2 is a diagram showing an example of a conventional display of a standard map according to a reduced scale.
FIG. 3 is a diagram showing facility position data.
FIG. 4 is a diagram showing industry-specific data.
FIG. 5 is a diagram illustrating a display priority addition score table according to a user's usage mode.
FIG. 6 is a flowchart illustrating a display priority addition determination process.
FIG. 7 is a diagram showing a map display example after a display priority is changed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Control part 2 GPS receiver 3 Map database 4 Facility database 5 Storage device 6 Display part 7 Operation part 8 Ignition sensor

Claims (8)

In a navigation device including a road map data input from a map database, data of various facilities to be displayed on a road map from a facility database, and a display device for displaying a road map and various facilities on the road map,
Usage status detection means for detecting the usage status of the facility;
Display priority setting means for classifying various facilities by type of business, and setting display priorities for each type of business according to the use status of facilities;
Maximum scale storage means for storing a table in which the maximum scale of the road map that permits facility display for each type of business is set according to the display priority;
The scale of the road map displayed on the display means, the display priority for each industry set by the display priority setting means, and the maximum for the display priority for each industry stored in the maximum scale storage means. Display industry determining means for determining the type of facility to be displayed on the road map of the display means based on the scale;
A display control unit for reading data of facilities belonging to the type of business whose display is determined by the display type determining unit from the facility storage unit and displaying the data on the road map of the display unit. The navigation device according to claim 1,
The navigation device, wherein the display priority setting means determines an additional score according to the use status of the facility detected by the use status detection device, and adds the added score to the display priority. The navigation device according to claim 2,
The navigation device, wherein the display priority setting means multiplies an added point corresponding to the use status of the facility by a magnification preset for each type of business, and adds the added point to the display priority. In the navigation device according to claim 2 or 3,
The display apparatus according to claim 1, wherein the display priority setting means adds the display priority of the business related to the business to which the display priority is added when adding the display priority. The navigation device according to claim 1,
The display priority setting means obtains a subtraction point based on the usage status of the facility detected by the usage status detection device at predetermined intervals and a magnification preset for each type of business, and subtracts it from the display priority. A featured navigation device. The navigation device according to any one of claims 1 to 4,
The navigation apparatus according to claim 1, wherein the display type determining unit does not perform the facility display of the type of display when the display priority falls below a preset value. The navigation device according to any one of claims 2 to 6,
The navigation device, wherein the display priority setting means does not add or subtract display priorities to a predetermined special facility or business type. The navigation device according to any one of claims 1 to 7,
A navigation device comprising an operation member for setting display or non-display of an arbitrary facility irrespective of display priority.

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