JP4893440B2 - Navigation device - Google Patents

Description

  The present invention relates to a navigation device.

2. Description of the Related Art Conventionally, a navigation device that changes the scale of a map display depending on whether a vehicle is traveling or stopped is known (see, for example, Patent Document 1).
There is also known a portable navigation terminal that stores a movement speed and a map data type (wide area map to city map) in association with each other, and can select and display a map of an appropriate hierarchy according to the detected movement speed. (For example, refer to Patent Document 2).
JP 2006-267683 A JP-A-2005-321575

According to the portable navigation terminal of Patent Document 2, a detailed map is displayed when the speed is low, and a wide area map is displayed when the speed is high, so that the area through which the moving body passes is Therefore, it is possible to display an appropriate map depending on whether or not the area is a geographically unguided area.
However, in reality, due to various circumstances such as speed regulation, road width, and traffic conditions, even in an area where the geography is known, it may be possible to pass at a slow speed. Even in such a case, the technique disclosed in Patent Document 2 displays a detailed map on the assumption that the area is a non-geographical area, which is inconvenient for the user.

  The subject of this invention is providing the navigation apparatus which can perform a more suitable map display.

In order to solve the above-mentioned problem, the invention described in claim 1 includes display means for displaying map information,
In a navigation device comprising a current position detecting means for detecting a current position,
Speed detecting means for detecting the moving speed of the navigation device;
A movement history storage control unit that stores information on a position to which the navigation device has moved in the storage unit as a movement history each time the position passes, and deletes a movement history that has passed for a predetermined period from the storage unit. ,
Corresponding map storage means for storing the movement speed and the type and / or scale of map information in association with each other;
A determination unit that determines whether or not the current position detected by the current position detection unit is a position that has passed a predetermined number of times or more based on a movement history stored in the storage unit;
Based on the current position detected by the current position detection means, stop determination means for determining whether or not the vehicle has stopped for a predetermined time;
Selection means for allowing the user to select a setting of map information to be displayed on the display means when the navigation device is stopped from a plurality of setting conditions;
When the determination means determines that the current position detected by the current position detection means is not a position that has passed a predetermined number of times or more , the speed detection means regardless of the setting condition selected by the selection means. The map information displayed on the display means is switched and displayed according to the detected moving speed, and is selected by the selection means when the stop determination means determines that the vehicle has stopped for a predetermined time or more. Display control means for displaying map information on the display means in accordance with the set conditions,
With
The correspondence map storage means associates and stores more extensive map information as the moving speed increases,
The display control means switches the movement detected by the speed detection means by switching to the map information of the type and / or scale corresponding to the movement speed detected by the speed detection means in the corresponding map storage means. As the speed increases, a wider area of map information is displayed on the display means.

The invention according to claim 2 is a display means for displaying map information;
In a navigation device comprising a current position detecting means for detecting a current position,
Speed detecting means for detecting the moving speed of the navigation device;
A movement history storage control unit that stores information on a position to which the navigation device has moved in the storage unit as a movement history each time the position passes, and deletes a movement history that has passed for a predetermined period from the storage unit. ,
A determination unit that determines whether or not the current position detected by the current position detection unit is a position that has passed a predetermined number of times or more based on a movement history stored in the storage unit;
Based on the current position detected by the current position detection means, stop determination means for determining whether or not the vehicle has stopped for a predetermined time;
Selection means for allowing the user to select a setting of map information to be displayed on the display means when the navigation device is stopped from a plurality of setting conditions;
When the determination means determines that the current position detected by the current position detection means is not a position that has passed a predetermined number of times or more , the speed detection means regardless of the setting condition selected by the selection means. The map information displayed on the display means is switched and displayed according to the detected moving speed, and is selected by the selection means when the stop determination means determines that the vehicle has stopped for a predetermined time or more. Display control means for displaying map information on the display means in accordance with the set conditions ,
It is characterized by providing.

The invention described in claim 3 is the navigation device according to claim 2, further comprising correspondence map storage means for storing the movement speed and the type and / or scale of the map information in association with each other.
The display control means switches to map information of the type and / or scale associated with the moving speed detected by the speed detecting means in the corresponding map storage means.

According to the first aspect of the present invention, the display means for displaying the map information and the current position detecting means for detecting the current position are provided, the moving speed of the navigation device is detected by the speed detecting means, and the movement history is provided. The storage control means stores information on the position where the navigation device has moved in the storage means as the movement history every time the position passes, and deletes the movement history after a predetermined period of time from the storage means. The correspondence map storage means stores the movement speed and the map information type and / or scale in association with each other, and the judgment means passes the current position detected by the current position detection means more than a predetermined number of times. Whether or not the current position is a position is determined based on the movement history stored in the storage means, and is detected by the current position detection means by the stop determination means. It is determined whether or not the vehicle has been stopped for a predetermined time or not based on the current position, and the selection unit can set the map information to be displayed on the display unit when the navigation device is stopped among a plurality of setting conditions. When the current position detected by the current position detecting means is determined not to be a position that has passed a predetermined number of times or more by the display control means, the setting condition selected by the selecting means is set. Regardless of whether the map information displayed on the display means is switched and displayed according to the moving speed detected by the speed detecting means, and the stop determining means determines that the map has been stopped for a predetermined time or more. Further, the map information is displayed on the display means according to the setting condition selected by the selection means. Further, as the moving speed increases, the corresponding map storage means associates and stores a wider area of map information, and the display control means associates with the moving speed detected by the speed detecting means in the corresponding map storage means. By switching to different types and / or scales of map information, map information of a wider area is displayed on the display unit as the moving speed detected by the speed detection unit increases.
Therefore, the map information displayed on the display means is switched to the map information of the type and / or scale corresponding to the moving speed only at the position where the predetermined number of times has not passed within the predetermined period in the past, and the moving speed is As the speed increases, a wider area of map information is displayed on the display means, and a navigation device capable of performing more appropriate map display can be provided. Further, when the vehicle is stopped, the map information under the setting conditions desired by the user is displayed on the display means, and the usability of the navigation device can be improved.

According to the invention described in claim 2, the display means for displaying the map information and the current position detecting means for detecting the current position are provided, the moving speed of the navigation device is detected by the speed detecting means, and the movement history is provided. By the storage control means, information on the position where the navigation device has moved is stored in the storage means as the movement history every time the position passes, and the movement history after a predetermined period of time has been deleted from the storage means, The determination means determines whether or not the current position detected by the current position detection means is a position that has passed a predetermined number of times or more based on the movement history stored in the storage means, and the stop determination means determines the current position. Based on the current position detected by the detection means, it is determined whether or not the vehicle has been stopped for a predetermined time or more, and the navigation means performs the navigation. Device is selected by the user from the setting condition setting is plural map information to be displayed on the display unit when it is stopped, the display control means, the determining means, the current position detected by the current position detection means When it is determined that the position has not passed the predetermined number of times, the map information displayed on the display means is switched according to the moving speed detected by the speed detecting means regardless of the setting condition selected by the selecting means. And the map information is displayed on the display unit according to the setting condition selected by the selection unit when the stop determination unit determines that the vehicle has stopped for a predetermined time or longer.
Therefore, the map information displayed on the display means is switched to the map information corresponding to the moving speed only at a position that has not passed the predetermined number of times within the predetermined period in the past, so that a more appropriate map display can be performed. A navigation device that can be provided can be provided. Further, when the vehicle is stopped, the map information under the setting conditions desired by the user is displayed on the display means, and the usability of the navigation device can be improved.

According to the invention described in claim 3, it is needless to say that the effect of the invention described in claim 2 can be obtained, and the corresponding map storage means determines the moving speed and the type and / or scale of the map information. The display control means switches the map information to the type and / or scale map information associated with the moving speed detected by the speed detection means in the corresponding map storage means.
Therefore, the map information displayed on the display means is switched to the map information of the type and / or scale corresponding to the moving speed, thereby enabling a more appropriate map display.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The navigation device 100 of the present embodiment is a portable navigation device mounted on a vehicle, for example, and provides the user with various information such as map information and route search / route guidance to a destination.

First, the configuration of the main part of the navigation device 100 will be described with reference to FIG.
The navigation device 100 includes, for example, a current position detection unit 1 as a current position detection unit, a speed detection sensor 2 as a speed detection unit, a communication unit 3, a display unit 4 as a display unit, an input unit 5, A control unit 6 and the like are provided.

The current position detection unit 1 includes, for example, a gyro sensor, a GPS positioning unit, and the like, detects current position information of the navigation device 100 itself, and outputs a current position detection signal based on the detected current position information to the control unit 6. .
Specifically, the gyro sensor is, for example, an optical fiber optic gyro, a vibration type piezoelectric vibration gyro, or the like, and detects the traveling direction of the vehicle on which the navigation device 100 is mounted.
The GPS positioning unit receives, for example, radio waves from a plurality of (for example, at least three) artificial satellites whose positions are known by a GPS antenna (not shown), and from each arrival time of the radio waves received from each artificial satellite, The distance from the artificial satellite to the navigation device 100 is calculated, and the latitude / longitude data of the intersection of the distance from each artificial satellite is acquired as the current position.

  The speed detection sensor 2 detects a traveling speed of a vehicle or the like on which the navigation device 100 is mounted, and outputs a speed detection signal proportional to the detected traveling speed to the control unit 6.

  For example, the communication unit 3 is connected to an information providing apparatus (not shown) via a network, and receives various information such as route guidance and map information transmitted from the information providing apparatus via the network.

  The display unit 4 includes a display such as an LCD (Liquid Crystal Display), for example, and displays map information and other various information on the display according to control from the control unit 6.

The input unit 5 includes, for example, a character / number key, various function keys, a touch panel integrated with the display unit 4, and the like, and the user inputs various information such as a destination point and a departure point.
Specifically, the input unit 5 outputs a key press signal based on a key press by the user to the control unit 6, and calculates the coordinates of the touch operation when the user performs a touch operation on the touch panel, A pressing signal based on the calculated coordinates is output to the control unit 6. Further, the input unit 5 may be provided in, for example, a remote controller or the like and capable of remote operation.

  The control unit 6 includes a CPU (Central Processing Unit) 61, an RTC (Real Time Clock) 62, a memory unit 63, a ROM (Read Only Memory) 64, and the like.

  The CPU 61 executes various programs stored in the ROM 64 in accordance with input signals and the like input from each unit of the navigation device 100, and outputs an output signal to each unit based on the execution program. The overall control of 100 operations is controlled.

  The RTC 62 counts the current time and outputs the counted current time to the CPU 61.

  The memory unit 63 includes a work area 631 formed of a volatile memory such as a RAM (Random Access Memory), for example, and the processing results generated when various programs are executed by the CPU 61, input data, and the like The work area 631 is stored.

  The memory unit 63 includes a data area 632 made of a nonvolatile memory such as an EPROM (Erasable Programmable ROM). The data area 632 stores, for example, a map information DB 632a, an area code storage unit 632b, a movement history storage unit 632c, a corresponding map storage unit 632d, and the like.

For example, the map information DB 632a stores map information of different types and scales in a hierarchical structure.
Specifically, the map information DB 632a stores the map information divided into three layers of the first to third layers, for example, according to the road type. The first hierarchy, which is the upper hierarchy, stores, for example, a wide-area map that includes high-speed automobile national roads and general national roads, and the second hierarchy includes prefectural roads and roads that are displayed on the wide-area map. A mid-range map containing municipal roads is stored. In addition, in addition to the road displayed in the middle map, the third hierarchy, which is a lower hierarchy, further stores a detailed map in which narrow streets are recorded.
This map information includes address information, information on buildings, facilities, stores, parks, railways, topographic information, and the like in addition to road information. In addition, the map information is updated to the latest map information downloaded from an information providing device (not shown) via the network N as needed.

Note that the map information DB 632a is not limited to a hierarchy classified according to the road type, but is classified according to the map type based on the scale that can be displayed, the width of the road, the classification other than the road type, for example. It may be what was done.
In the case of dividing the hierarchy according to the scale, for example, the map information corresponding to the display scale of 1/5000 to 1 / 250,000 is displayed in the first hierarchy, and the display scale of 1/2500 to 1/10000 is displayed in the second hierarchy. In the map information corresponding to, the third hierarchy stores map information corresponding to a display scale of 1/500 to 1/1000.
In addition, when stratifying according to the width of the road, for example, map information in which roads with a width of 10 m or more are recorded in the first hierarchy, and roads with a width of 5 to 10 m are recorded in the second hierarchy. In the map information and the third hierarchy, map information in which roads with a width of less than 5 m are recorded is stored.

Here, the data structure of the map information stored in the map information DB 632a will be described.
The map information is a collection of unit data called a mesh in which the ground surface is divided into rectangular areas having a predetermined area. Each piece of mesh data constituting the map information includes a mesh code (for example, according to a standard area mesh system). Stuff).
Further, each mesh data is divided into grid-like divided area data, and each divided area is given an area code and stored in an area code storage unit 632b described later. Each divided area is, for example, a rectangular area having a side of 100 m ² or the like.

The area code storage unit 632b stores an area code assigned to each of the divided areas constituting the map information stored in the map information DB 632a.
FIG. 2 is a diagram illustrating the area code storage unit 632b. As shown in FIG. 2, the area code storage unit 632b assigns a 12-digit area code to each divided area in the map information, and stores a latitude range and a longitude range as position information of each divided area. Yes.

The movement history storage unit 632c stores, as a movement history, information related to the position where the navigation device 100 has moved in the execution of a movement history storage control program 64c described later.
FIG. 3 is a diagram illustrating the movement history storage unit 632c. As illustrated in FIG. 3, the movement history storage unit 632 c displays, for each area code assigned to each divided area in the map information, the number of times of passage through the divided area to which the area code is assigned and the date information at the time of passage. By storing the position, the position through which the navigation device 100 has passed is stored as a movement history. Further, the movement history stored in the movement history storage unit 632c is deleted when a predetermined period (for example, six months) elapses after storage, and only the movement history for the predetermined period is retained.
For example, in the example of the movement history storage unit 632c in FIG. 3, for example, the number of times the area code “1011-23-10-11-02” has passed in the past predetermined period is “2 times”. The second pass is on 2007/01/07 and the second pass is on 2007/02/05.

The correspondence map storage unit 632d stores the movement speed and the type and / or scale of the map information in association with each other.
FIG. 4 is a diagram illustrating the correspondence map storage unit 632d. As shown in FIG. 4, the correspondence map storage unit 632d classifies the movement speed, and associates the hierarchy in the map information DB 632a as the type of map information with the display scale for each of the divided movement speed ranges. Yes. The corresponding map storage unit 632d stores more extensive map information (upper hierarchy and large scale in the map information DB 632a) in association with each other as the moving speed increases.
For example, in the example of the corresponding map storage unit 632d in FIG. 4, the moving speed of less than 20 km / h is associated with the detailed map of the third hierarchy in the map DB and 1/500 is associated with the display scale. It has been. Further, the travel speed of 20 to 40 km / h is associated with the detailed map of the third hierarchy and the display scale of 1/1000, and the travel speed of 40 to 60 km / h is the middle area map of the second hierarchy. A display scale of 1/2500 is associated with the moving speed of 60 to 80 km / h, and an intermediate map of the second hierarchy is associated with a display scale of 1/5000. Further, the moving speed of 80 to 100 km / h is associated with the wide-area map of the first hierarchy and the display scale of 1/10000, and the moving speed of 100 km / h or more is 1 / high with the wide-area map of the first hierarchy. A display scale of 25000 is associated.

  The ROM 64 has a program storage area composed of, for example, a nonvolatile memory. Specifically, the current position detection program 64a, speed detection program 64b, movement history storage control program 64c, determination program 64d, and stop determination program 64e. A selection program 64f, a display control program 64g, and the like.

The current position detection program 64a is a program for causing the CPU 61 to realize a function of detecting the current position of the navigation device 100, for example.
Specifically, the CPU 61 causes the current position detection unit 1 configured by a gyro sensor, a GPS positioning unit, and the like to acquire current position information of the navigation device 100 itself, and the current position output from the current position detection unit 1 Based on the detection signal, the latitude / longitude as the current position of the vehicle on which the navigation device 100 is mounted is specified.
The CPU 61 functions as a current position detection unit together with the current position detection unit 1 by executing the current position detection program 64a.

The speed detection program 64b is a program for causing the CPU 61 to realize a function of detecting the moving speed of the navigation device 100, for example.
Specifically, the CPU 61 causes the speed detection sensor 2 to detect the traveling speed of the vehicle on which the navigation device 100 is mounted at a predetermined timing such as when a display control program 64g described later is executed, and the speed detection sensor 2 Based on the speed detection signal output from the vehicle, the traveling speed of the vehicle on which the navigation device 100 is mounted is specified.
The CPU 61 functions as a speed detection unit together with the speed detection sensor 2 by executing the speed detection program 64b.

The movement history storage control program 64c, for example, causes the CPU 61 to store information relating to the position where the navigation device 100 has moved in the movement history storage unit 632c as a movement history every time the position passes, and a predetermined period has elapsed after the storage. This is a program for realizing a function of deleting the moved movement history from the movement history storage unit 632c.
Specifically, when the latitude / longitude as the current position detected by the execution of the current position detection program 64a is specified when the vehicle equipped with the navigation device 100 is traveling, the CPU 61 includes the latitude / longitude. The divided area to be specified is specified based on the area code storage unit 632b. When it is determined that the user has moved from one divided area to another divided area based on the specified divided area, the number of passages of the specified divided area stored in the movement history storage unit 632c is calculated each time. Counts up once and stores date information at the time of passage. The CPU 61 performs this process every time it moves to a different divided area, and counts the number of times of passage through the divided area.
In addition, if the movement history storage unit 632c stores information stored before a predetermined period (for example, six months) or more, the CPU 61 deletes the date information in the movement history and performs the division. By counting down the number of times the area has passed, only the movement history within a predetermined period is stored in the movement history storage unit 632c.
The CPU 61 functions as a movement history storage control unit by executing such a movement history storage program.

For example, the determination program 64d indicates in the movement history stored in the movement history storage unit 632c whether or not the current position detected by the execution of the current position detection program 64a is a predetermined number of times or not. This is a program for realizing a function to make a judgment based on the program.
Specifically, the CPU 61 calculates the latitude / longitude as the current position detected by the execution of the current position detection program 64a in the execution of the movement history storage control program 64c when the vehicle on which the navigation device 100 is mounted travels. Is identified based on the area code storage unit 632b, and when the number of passages of the divided area in the movement history storage unit 632c is counted up, the number of passages of the divided area is equal to or greater than a predetermined number of times (for example, It is determined whether it is 5 times or more.
The CPU 61 functions as a determination unit by executing the determination program 64d.

The stop determination program 64e is, for example, a program for causing the CPU 61 to realize a function of determining whether or not the vehicle has stopped for a predetermined time or more based on the current position detected by executing the current position detection program 64a.
Specifically, when the latitude / longitude as the current position detected by executing the current position detection program 64a does not change for a predetermined time or longer (for example, 5 seconds or longer), the CPU 61 determines that the navigation device 100 It is determined that the vehicle has stopped for a predetermined time.
The CPU 61 functions as a stop determination unit by executing the stop determination program 64e.

The selection program 64f is, for example, a program for causing the CPU 61 to realize a function of allowing the user to select setting of map information to be displayed on the display unit 4 from a plurality of setting conditions when the navigation device 100 is stopped. It is.
FIG. 5 is an illustration of a map display setting screen displayed on the display unit 4 in the execution of the selection program 64f. As shown in FIG. 5, the map display setting screen displays a plurality (for example, three) of map information setting conditions displayed on the display unit 4 when the navigation device 100 is stopped. An operation in the unit 5 allows the user to select one setting condition. In the map display setting screen of FIG. 5, for example, a first setting condition for displaying at a display scale that is one level wider than the current display scale, a second setting condition for displaying at a display scale set by the user, It is possible to select from the three setting conditions of the third setting condition that does not change the current display scale. When the second setting condition is selected, the display scale is further reduced to a plurality of scales (for example, 1/500, 1/1000, 1/2500, 1/5000, 1/10000, 1/25000, etc.). When one setting condition is selected by the user on the map display setting screen, the CPU 61 stores the selected setting condition in a predetermined area in the memory unit 63 as a setting of map information to be displayed when stopped.
The CPU 61 functions as a selection unit by executing the selection program 64f.

The display control program 64g is, for example, when the CPU 61 determines that the current position detected by executing the current position detection program 64a is not a position that has passed a predetermined number of times or more by executing the determination program 64d. This is a program for realizing a function of switching and displaying the map information displayed on the display unit 4 according to the moving speed detected by executing 64b. More specifically, the display control program 64g detects the speed by switching to a map of the type and / or scale associated with the moving speed detected by the execution of the speed detection program 64b in the corresponding map storage unit 632d. As the moving speed detected by the execution of the program 64b increases, map information on a wider area is displayed on the display unit 4.
The display control program 64g displays according to the setting condition selected in the execution of the selection program 64f when it is determined by the execution of the stop determination program 64e that the navigation device 100 has been stopped for a predetermined time or more. This is a program for realizing the function of displaying map information on the unit 4.
The CPU 61 functions as a display control unit by executing the display control program 64g.

Here, first, the display control of the map information by the execution of the display control program 64g during traveling will be specifically described.
When the determination program 64d is executed, the CPU 61 counts up the number of passages of the divided area in the movement history storage unit 632c, and the number of passages of the divided area is a predetermined number of times or more (for example, five times or more). If it judges, the speed detection program 64b will be performed and the speed detection sensor 2 will detect the moving speed of the vehicle by which the navigation apparatus 100 is mounted. Then, with reference to the corresponding map storage unit 632d, the hierarchy and scale in the map information DB 632a as the type of map information associated with the moving speed range including the detected moving speed are acquired, and the acquired map information The type and scale of the map information displayed on the display unit 4 are switched based on the type and scale.
For example, when the navigation device 100 moves from one divided area to another divided area, the CPU 61 counts up the number of passages associated with the area code of the divided area to be moved one time in the movement history storage unit 632c. To do. Then, it is determined whether or not the number of times of passing through the divided area is a predetermined number or more (for example, five or more). If it is determined that the number of passages is not the predetermined number or more, the speed detection sensor 2 detects the moving speed, The type and scale of the map information associated with the moving speed are acquired in the unit 632d, and the map information displayed on the display unit 4 is switched based on this. Further, when the CPU 61 determines that the number of times of passage through the divided area is a predetermined number or more (for example, 5 times or more), the CPU 61 does not switch the map information displayed on the display unit 4.
For example, in the example of the movement history storage unit 632c in FIG. 3, when moving to the divided area of the area code “1011-23-10-11-03”, the number of passages is a predetermined number or more (for example, five times or more). Therefore, the possibility that the area is unfamiliar to the user is low, and the map information on the display unit 4 is not changed. On the other hand, when moving to a divided area with the area code “1011-23-10-11-02”, the number of times of passage is not more than a predetermined number (for example, 5 times or more), so it may be an uninformed area for the user The map information on the display unit 4 is automatically changed according to the moving speed based on the type and scale of the map information associated with the moving speed in the corresponding map storage unit 632d. For example, when the moving speed detected by the speed detection sensor 2 is 30 km / h, the CPU 61 acquires the detailed map of the third hierarchy from the map information DB 632a and causes the display unit 4 to display the detailed map. The display scale of the detailed map is 1/1000. When the moving speed is 105 km / h, the CPU 61 acquires the first-level wide area map from the map information DB 632a, displays the acquired wide area map on the display unit 4, and displays the display scale of the wide area map. Is 1/25000.
As a result, only in the divided areas that have not passed the predetermined number of times within the past predetermined period, the map information is switched according to the moving speed. Is displayed on the display unit 4, and more detailed map information is displayed on the display unit 4 when the moving speed is slow.

Next, the display control of the map information by executing the display control program 64g at the time of stop will be specifically described.
When it is determined that the CPU 61 has stopped for a predetermined time or more by executing the stop determination program 64e, the CPU 61 displays the map on the display unit 4 according to the setting condition selected on the map display setting screen by executing the selection program 64f. Display information.
For example, when the navigation device 100 stops for a predetermined time or more during traveling, the CPU 61 determines that the navigation device 100 has stopped, reads the setting conditions selected by the user on the map display setting screen from a predetermined area of the memory unit 63, and reads the settings. Based on the conditions, the map information displayed on the display unit 4 is switched. For example, when the first setting condition for displaying at a display scale that is one step wider than the current display scale is set, the CPU 61 switches from the current display scale to one step wide scale (for example, 1/1000). → 1/2500). Further, for example, when the second setting condition for displaying at the display scale set by the user is set, the CPU 61 switches to the display scale set by the user (for example, 1/500). For example, when the third setting condition that does not change the current display scale is set, the CPU 61 does not change the current display scale.
Thereby, at the time of a stop, map information desired by the user is displayed on the display unit 4.

Next, the map display switching process will be described with reference to the flowchart of FIG.
First, in step S <b> 1, the CPU 61 specifies the latitude / longitude as the current position of the navigation device 100 based on the current position detection signal output from the current position detection unit 1. In step S2, the CPU 61 refers to the area code storage unit 632b based on the identified current position, and determines whether or not it has moved from one divided area to another. If the CPU 61 determines in step S2 that it has moved to another divided area (step S2; Yes), in step S3, the movement history storage unit 632c corresponds to the area code of the divided area that is currently located in the movement history storage unit 632c. The number of times of passing through the attached divided area is counted up by one time, date information is stored, and a movement history is stored. Further, in step S4, if there is a movement history stored in the movement history storage unit 632c before a predetermined period (for example, six months) or more, the movement history is deleted and the movement history storage unit 632c is updated. .

  In step S5, based on the movement history storage unit 632c, the CPU 61 determines whether or not the number of times of passage through the currently located divided area is equal to or greater than a predetermined number. When the CPU 61 determines that the number of times of passage through the currently located divided area is equal to or greater than the predetermined number (step 5; Yes), the map information on the display unit 4 is not automatically switched, and the process returns to step S1 and the above processing is performed. repeat. On the other hand, when the CPU 61 determines that the number of times of passage through the currently located divided area is less than the predetermined number (step S5; No), in step S6, based on the moving speed detection signal output from the speed detection sensor 2. The moving speed of the navigation device 100 is detected.

  In step S7, the correspondence map storage unit 632d is referred to, and the hierarchy in the map information DB 632a as the type of map information associated with the detected moving speed and the display scale of the map information are acquired, and step S8 is performed. In FIG. 5, it is determined whether or not the type / scale of the map information currently displayed on the display unit 4 is different from the type / scale of the map information associated with the detected moving speed. In step S8, the CPU 61 determines that the type / scale of the map information currently displayed on the display unit 4 is the same as the type / scale of the map information associated with the detected moving speed (step S8). No), in step S9, the latitude / longitude as the current position of the navigation device 100 is specified based on the current position detection signal output from the current position detector 1. In step S10, the CPU 61 refers to the area code storage unit 632b based on the identified current position, and determines whether or not it has moved to another divided area. If the CPU 61 determines in step S10 that it has moved to another divided area (step S10; Yes), it returns to step S3 and repeats the above processing, and if it determines that it has not moved to another divided area ( Step S10; No), it returns to Step S6 and repeats the above process.

On the other hand, when the CPU 61 determines in step S8 that the type / scale of the map information currently displayed on the display unit 4 is different from the type / scale of the map information associated with the detected moving speed (step S8). ; Yes), the process proceeds to step S11.
In step S11, the CPU 61 acquires the map information of the type corresponding to the moving speed from the map information DB 632a, switches the map information on the display unit 4 to the map information of the type / scale corresponding to the moving speed, and step Returning to S9, the above processing is repeated.

According to the navigation device 100 in the present embodiment described above, the display unit 4 for displaying map information is provided, and the current position is detected by the execution of the current position detection program 64a by the CPU 61, and the speed detection program 64b is executed. When the movement speed of the navigation device 100 is detected and the movement history storage control program 64c is executed, information on the position where the navigation device 100 has moved is stored in the movement history storage unit 632c as a movement history every time the position passes. In addition, the movement history that has passed for a predetermined period after the storage is deleted from the movement history storage unit 632c. Further, the corresponding map storage unit 632d stores the movement speed and the type and / or scale of the map information in association with each other, and the current detected by the execution of the current position detection program 64a by the execution of the determination program 64d. Whether or not the position has passed a predetermined number of times is determined based on the movement history stored in the movement history storage unit 632c, and is detected by executing the current position detection program 64a by executing the stop determination program 64e. Based on the current position, it is determined whether or not the vehicle is stopped for a predetermined time or more, and execution of the selection program 64f sets the map information to be displayed on the display unit 4 when the navigation device 100 is stopped. The determination program is selected by the user from a plurality of setting conditions and executed by the display control program 64g. When the current position detected by the execution of the current position detection program 64a is determined not to be a position that has passed a predetermined number of times or more according to the movement speed detected by the execution of the speed detection program 64b. The map information displayed on the display unit 4 is switched and displayed, and when it is determined by the execution of the stop determination program 64e that the map information has been stopped for a predetermined time or longer, the map information is selected by the execution of the selection program 64f. Map information is displayed on the display unit 4 in accordance with the setting conditions. Further, as the moving speed increases, the corresponding map storage unit 632d stores and stores the map information in a wider area, and is detected by the speed detection sensor 2 in the corresponding map storage unit 632d by executing the display control program 64g. By switching to the map information of the type and / or scale associated with the travel speed, the map information of a wider area is displayed on the display unit 4 as the travel speed detected by the speed detection sensor 2 becomes faster. .
Therefore, the map information displayed on the display unit 4 is switched to the map information of the type and / or scale corresponding to the moving speed only at a position that has not passed the predetermined number of times in the past predetermined period. Specifically, when the moving speed is fast, more extensive map information is displayed on the display unit 4, and when the moving speed is slow, more detailed map information is displayed on the display unit 4. Therefore, the navigation apparatus 100 which can perform a more appropriate map display can be provided. In addition, when the vehicle is stopped, map information under the setting conditions desired by the user is displayed on the display unit 4, and the usability of the navigation device 100 can be improved.

The present invention is not limited to the above embodiment, and various improvements and design changes may be made without departing from the spirit of the present invention.
For example, the storage medium such as the map information DB 632a, the area code storage unit 632b, the movement history storage unit 632c, and the corresponding map storage unit 632d may be a hard disk (Hard Disc), a CD-ROM (Compact Disc Read Only Memory), a DVD (Digital (Versatile Disc) or any other storage medium such as an optical, magnetic, or semiconductor memory. Further, it may be fixed (for example, magnetic tape, hard disk, etc.) or detachably provided (for example, FD, MO, DVD, etc.).
Further, for example, the setting conditions that can be selected on the map display setting screen in the execution of the selection program 64f are not limited to those exemplified in the above embodiment, and for example, the scale is changed to a more detailed scale than the scale currently being displayed. The setting conditions for switching, the setting conditions for switching the type / scale of the map information being displayed on the display unit 4 at predetermined time intervals, and the like may be selected. In addition, on the setting condition selection screen, in addition to the display scale of the map information displayed on the display unit 4, the type of map information may be selectable.
Further, the correspondence map storage unit 632d may be configured such that the user can set the type and scale of the map information associated with the moving speed.
In the above embodiment, the number of times of passage is counted for each divided area divided in a lattice pattern. For example, the number of times of passage is counted for each road, and the number of times of passage stored in the movement history storage unit 632c is a predetermined number of times. You may comprise so that display switching of map information may be performed on the following roads.

It is a block diagram which illustrates the principal part composition of the navigation device in this embodiment. It is a figure which illustrates an area code storage part. It is a figure which illustrates a movement history storage part. It is a figure which illustrates a correspondence map storage part. It is an illustration of the map display setting screen displayed on a display part in execution of a selection program. It is a flowchart which illustrates map display switching processing.

Explanation of symbols

100 Navigation device 1 Current position detection unit (current position detection means)
2 Speed detection sensor (speed detection means)
4 Display section (display means)
61 CPU (current position detection means, speed detection means, movement history storage control means, determination means, stop determination means, selection means, display control means)
632c Movement history storage unit (storage means)
632d Corresponding map storage unit (corresponding map storage means)
64a Current position detection program (current position detection means)
64b Speed detection program (speed detection means)
64c Movement history storage control program (movement history storage control means)
64d determination program (determination means)
64e Stop determination program (stop determination means)
64f selection program (selection means)
64g Display control program (display control means)

Claims (3)

Display means for displaying map information;
In a navigation device comprising a current position detecting means for detecting a current position,
Speed detecting means for detecting the moving speed of the navigation device;
A movement history storage control unit that stores information on a position to which the navigation device has moved in the storage unit as a movement history each time the position passes, and deletes a movement history that has passed for a predetermined period from the storage unit. ,
Corresponding map storage means for storing the movement speed and the type and / or scale of map information in association with each other;
A determination unit that determines whether or not the current position detected by the current position detection unit is a position that has passed a predetermined number of times or more based on a movement history stored in the storage unit;
Based on the current position detected by the current position detection means, stop determination means for determining whether or not the vehicle has stopped for a predetermined time;
Selection means for allowing the user to select a setting of map information to be displayed on the display means when the navigation device is stopped from a plurality of setting conditions;
When the determination means determines that the current position detected by the current position detection means is not a position that has passed a predetermined number of times or more , the speed detection means regardless of the setting condition selected by the selection means. The map information displayed on the display means is switched and displayed according to the detected moving speed, and is selected by the selection means when the stop determination means determines that the vehicle has stopped for a predetermined time or more. Display control means for displaying map information on the display means in accordance with the set conditions,
With
The correspondence map storage means associates and stores map information of a wider area as the moving speed increases,
The display control means switches the movement detected by the speed detection means by switching to the map information of the type and / or scale corresponding to the movement speed detected by the speed detection means in the corresponding map storage means. A navigation apparatus characterized in that map information on a wider area is displayed on the display means as the speed increases. Display means for displaying map information;
In a navigation device comprising a current position detecting means for detecting a current position,
Speed detecting means for detecting the moving speed of the navigation device;
A movement history storage control unit that stores information on a position to which the navigation device has moved in the storage unit as a movement history each time the position passes, and deletes a movement history that has passed for a predetermined period from the storage unit. ,
A determination unit that determines whether or not the current position detected by the current position detection unit is a position that has passed a predetermined number of times or more based on a movement history stored in the storage unit;
Based on the current position detected by the current position detection means, stop determination means for determining whether or not the vehicle has stopped for a predetermined time;
Selection means for allowing the user to select a setting of map information to be displayed on the display means when the navigation device is stopped from a plurality of setting conditions;
When the determination means determines that the current position detected by the current position detection means is not a position that has passed a predetermined number of times or more , the speed detection means regardless of the setting condition selected by the selection means. The map information displayed on the display means is switched and displayed according to the detected moving speed, and is selected by the selection means when the stop determination means determines that the vehicle has stopped for a predetermined time or more. Display control means for displaying map information on the display means in accordance with the set conditions ,
A navigation device comprising: Corresponding map storage means for storing the movement speed and the type and / or scale of map information in association with each other,
The navigation according to claim 2, wherein the display control means switches to map information of a type and / or a scale corresponding to the moving speed detected by the speed detecting means in the corresponding map storage means. apparatus.

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