JPH07190789A - Navigation device - Google Patents

Abstract

PURPOSE:To easily input a point such as a destination using a displayed map by showing a detailed map via the scroll and scale selection of a map displayed as a result of an instruction and input operation according to a display screen. CONSTITUTION:Input information inputted through the operation of each switch 3 of touch and button type is processed at a data processing section 5, and controls the image display contents of a display 2. Thereafter, a display control program necessary for searching a route and a guide is conducted for selecting a map indication to the required scale, and scrolling a map. The screen of a display 2 shows a menu such as destination setting and place name indexing, and point information is inputted according to the screen. When the place name index is selected to find a point by the name of a prefecture, a city or the like, for example, a map around a desired point is displayed with a scale selected to a value specified via the selection of the destination setting. The desired point on the map, when indicated via a touch panel, is scrolled to the center of the screen and a map having a scale selected to the desired value is displayed on the operation of a switch for setting the point.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device, and more particularly to a navigation device for easily inputting a destination such as a destination or a passing point on a displayed map.

[0002]

2. Description of the Related Art Navigation devices provide route guidance so that a user can visit a destination for the first time with peace of mind. In recent years, navigation precision, operability, visibility and other performance and function improvements have been made. The technology development for is actively carried out, and various systems have been proposed. This navigation device has a display screen used when setting a route and a display screen that is opened automatically or in response to a driver's request when guiding a route. The display screen after the start of guidance is a section map that guides a wide area of several sections including the section currently traveling in at least the entire route consisting of a plurality of routed sections, and an intersection for guidance at the intersection. I have a figure.

[0003] Then, information such as remaining distance, name, right and left turn, etc. is provided for these section maps, intersection diagrams, and intersections that should turn so that the route can be traveled without fail. Teaching of characteristic objects so that you can check, not only display but also voice guidance, display the route on the map, guide you along the route during actual driving, automatically follow the route The map can be scrolled to to check the route.

In such a navigation device,
To set a route, it is necessary to enter the starting point and the destination. When the starting point and the destination are found by this input, the route search process is performed from the road information data around the starting point and the destination and between them. Is performed, and the optimum route is set from a plurality of routes. As a method of inputting the starting point and the destination, for example, the target registered positions such as the starting point and the destination are divided into genres such as tourism, parking lots, restaurants, etc.
In addition, the code is divided into regions such as prefectures and cities, the code is entered, the code number is entered, the menu is displayed and the menu is selected sequentially, and the node data is available. , A method of connecting the node data to define a road network, and inputting a position by the coordinate place of east longitude and north latitude, a method of inputting a telephone number, etc. have been proposed. Furthermore, 2 such as the present location or any starting point and destination
In addition to searching for a route between points, there is also a method of specifying a passing point, a priority of a toll road, and the like.

As an example of this type of device, Japanese Patent Laid-Open No. 2-1 is known.
A telephone number input method is disclosed in Japanese Patent No. 87898, and a genre-specific or code number input method is further disclosed in Japanese Unexamined Patent Publication No. 1-173820.
Japanese Patent Laid-Open No. Hei 2 (1994)
No. 3899 discloses a method of inputting a desired passing point.

FIG. 21 is a diagram showing an example of point input in a conventional navigation device. In a conventional navigation device, by designating a place name index on a menu screen, a map in the vicinity of a desired area can be read out and displayed to register a desired point and set a destination. For example, when setting a desired point as a destination, the destination switch on the map screen of FIG. 21A initially displayed by the place name index is touched (operated). This operation causes a transition to the destination setting screen, and the cross mark and point setting key for setting the map and point initially displayed on the display screen as shown in FIG. 21B, and further fine adjustment. An 8-direction cursor Δ for performing is displayed. Since the cross mark is displayed at the center position of the screen, the screen can be selectively scrolled in 8 directions by using the 8-direction cursor, and the point such as the destination to be set can be displayed at the center position on the display screen, that is, the cross mark. Move to the mark position. Then, by touching the point set key, the point of the cross mark is set as the destination. Also, when setting a desired point as a registration point, the registration key is touched and the point of the cross mark is similarly registered.

[0007]

However, in the above-mentioned conventional setting method, when the scale of the displayed map is wide, the desired point is set as a destination and the destination becomes small, making it difficult to see. Therefore, there is a problem that it is not easy to scroll the screen by using the 8-direction cursor and accurately set the point to be set to the cross mark. Particularly, in the case of a navigation device for a vehicle, there is a problem that the size of the screen of the display, which is a display device, is as small as about 6 inches to be mounted on the vehicle, and it is difficult to see from the driver because it is arranged in the center console of the vehicle. . Further, when the map initially displayed on the display device is not the map including the desired point, it may not be known in which direction the map may be scrolled to search for the desired point. Even in such a case, it is necessary to scroll the screen by using the 8-direction cursor and move the desired point to be set to the center position of the display screen. Therefore, the amount of scroll movement by the 8-direction cursor for fine adjustment However, there is a problem that the setting takes a long time.

The present invention is intended to solve the above problems, and an object of the present invention is to provide a navigation device capable of easily inputting a destination such as a destination or a passing point on a displayed map. It is a thing.

[0009]

To this end, the present invention is directed to map data having map drawing information of a plurality of scales, display means for displaying the map at an arbitrary scale, and keys displayed on the display means. Input means for indicating and inputting a point and display for reading detailed map data and displaying a map on the display means, and switching to a predetermined scale and displaying a detailed drawing on the condition that the instruction for setting the point is given by the input means. The present invention is characterized by including a control means and displaying a detailed view by scrolling a map displayed on the display means or switching the scale by an instruction input operation on the display screen.

Further, the display control means scrolls the spot on the map designated by the input means to the center of the screen of the display means, and switches to a predetermined scale when the spot is designated by the input means and the map is switched. To display data,
Characteristic of scrolling the point on the map designated by the input means to the center of the screen of the display means, and displaying the range to be switched and displayed on the map when the instruction for setting the point is given by the input means. Is. Also, switch to a scale that displays the specified area as a detailed view,
The feature is that the map being displayed is switched to a scale for enlarging it to a predetermined magnification.

[0011]

In the navigation device of the present invention, map data having drawing information of a plurality of scales of map, display means for displaying the map at an arbitrary scale, and keys and points displayed on the display means. Input means for inputting,
Display control means for reading the map data and displaying the map on the display means and for switching the display to a predetermined scale and displaying a detailed view on the condition that an instruction to set the point is given by the input means. The detailed map is displayed by scrolling the map displayed on the display means or switching the scale by instruction input operation, so point entry can be done easily and quickly, and destinations and passing points can be set easily even while traveling. It will be possible.

Further, the display control means scrolls the spot on the map designated by the input means to the center of the screen of the display means, and switches to a predetermined scale when the spot is designated by the input means. To display data,
The point on the map designated by the input means is scrolled to the center of the screen of the display means, and when the instruction for setting the point is given by the input means, the range to be switched and displayed is displayed on the map. It is possible to easily scroll and switch to the detailed map, easily move the desired point and display the detailed map, and improve the accuracy of point input. Further, since the designated area is switched to a reduced scale for displaying as a detailed view or the map being displayed is switched to a predetermined magnification, a map which is easy to see for point input can be displayed.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram for explaining one embodiment of a navigation device according to the present invention, FIG. 2 is a diagram showing a configuration example of map display / point information in a data storage unit, and FIG. 3 is an example of a menu screen and a map display screen. FIG.

In FIG. 1, a data storage unit 1 stores map data and various data necessary for map display / point information, route search, guidance, etc.
It has map drawing information of a plurality of scales for inputting points such as a starting point, a destination, and a passing point, and guiding guidance along a route. The display 2 is composed of a color CRT or a color liquid crystal display, and is provided in the instrument panel near the driver's seat. And
All screens necessary for navigation such as route setting screens, section map screens, intersection map screens, etc. based on map data and guidance data processed by the data processing unit 5 are output in color, and route guidance settings and route guidance are also displayed on this screen. Buttons for displaying information, switching screens, and making phone calls are displayed. In particular, passing intersection information such as the name of a passing intersection is displayed in a pop-up color on the section map screen at any time. Therefore, the driver can confirm the current position of the own vehicle by looking at the section map, and can also obtain information about the future route.

The image processor 4 stores the image data used for screen display on the display 2 in the image memory, retrieves the image data from the image memory based on the display control signal from the data processing section 5, and performs the image processing. Then, a desired image is output on the screen of the display 2.

The switch 3 is a touch switch of a touch panel provided corresponding to the function button displayed on the display 2 or a button switch provided around the display 2, and based on signals input by these switches. It is configured to perform various operations. The input signal generating means that constitutes the input unit includes touch switches and button switches of these touch panels.

The data processing section 5 executes a program for performing processing such as route search, a display control required for route guidance, and a program for performing voice output control required for voice guidance to display a map. The display content of the screen of the display 2 is controlled through the image processor 4 by processing the input information from the switch 3 such as switching to a predetermined scale or scrolling the map.

As shown in FIG. 2, the map display / point information stored in the data storage unit 1 includes east longitude coordinates, north latitude coordinates, road number. , Destination information D-1 consisting of address, name, etc., passing point information D-2, screen lower left east longitude coordinate, screen lower left north latitude coordinate, screen center east longitude coordinate, screen center north latitude coordinate, scale, display direction, etc. map display There is information D-3.

On the screen of the display 2, a menu screen as shown in FIG. 3 (a) is displayed in order to input a point for setting a destination or registering a point. Input is made. Menu screen is "Destination setting", "Place name index", "Point registration", "Telephone number index", "Change", "Delete", "OFF", "Large",
The area of "small" is used as a touch key. "Destination setting"
Is a key to shift to the mode for setting the destination, and it moves to the search key screen such as place name index, home, current location, memory point, national map, telephone number, last departure point,
When the destination is set, route search is executed. The “place name index” is a key for searching a prefecture name, a city name, etc. and opening a map around a desired city or area, and is used like a map book. "Point registration" is a key used when the driver registers an arbitrary point as point data from map data, for example. Generally, in a navigation device, as information for setting a destination, for example, destinations classified by genre are recorded in advance, and the destination is set by searching from among them. In addition to this, it is used when the driver wants to register his or her own home, acquaintance's home, various facilities, institutions, etc. This point information is composed of, for example, a point number, a name, coordinates, a telephone number, etc., and is registered based on the coordinates set on the map. "Telephone number index" is a key to enter a telephone number and display a map centered on the registered point. If there is no corresponding telephone number, the area will be centered on the representative point from the area / city code. Display the map.
“Change” and “Delete” are keys for changing and deleting the route that has been searched and stored, and are “OFF”, “Large”,
“Small” is a key (not shown) for controlling and adjusting the volume of a separately provided audio output device.

In the navigation device according to the present invention, when a place name index is selected on the menu screen shown in FIG. 3A and a point is searched for by a prefecture name, a city name, etc.
As shown in (b), a map near a desired point is displayed, and when destination setting or passing point setting is selected, the map is switched to a predetermined scale and displayed. On this screen, when you specify a desired point on the map using the touch panel, that point is scrolled to the screen center of the display, and the map is displayed by switching to a predetermined scale by operating the switch for setting the point, and the center position of the screen is displayed. The point of is input.

Next, the configuration of each part of the navigation device according to the present invention, the flow of processing, and the screen transition will be described in more detail. FIG. 4 is a diagram showing a configuration example of each unit of the navigation device, FIG. 5 is a diagram showing a configuration example of software of the calculation unit, FIG. 6 is a diagram for explaining a processing flow of the input processing unit, FIG.
FIG. 7 is a diagram for explaining the flow of touch panel selection processing.

As shown in FIG. 4, the overall configuration of the navigation device according to the present invention includes an input / output unit 10 for inputting / outputting information on route guidance, a current position detecting unit 20 for detecting information on the current position of the vehicle, Data for transmitting / receiving navigation data to / from the information storage device 30 in which navigation data necessary for route calculation and display guidance data necessary for guidance, etc., information sources such as an information center and an electronic notebook, and telephone communication are recorded. The communication unit 40 includes a calculation unit 50 that executes route search processing and display guidance processing necessary for route guidance and controls the entire system.

In FIG. 4, the input / output unit 10 calculates the navigation processing according to the intention of the user so that the destination can be input and the driver can display the guidance information by voice and / or screen when needed. It has a function of instructing 50 and printing out processed data and data of data communication. As a means for realizing the function, the input unit is a touch switch 11 for inputting a destination by a telephone number or coordinates or requesting route guidance, a voice recognition device 12, an IC card or a magnetic card. It comprises a recording card reader 13 for reading the recorded data, and the output unit displays the input data on the screen and automatically displays the route guidance on the screen in response to the driver's request.
A printer 15 for printing out data processed by 0, data stored in the information storage device 30, communication data sent from an information center, and a speaker 16 for outputting route guidance by voice are provided.

The display 14 is composed of a color CRT or a color liquid crystal display device, and has a route setting screen based on map data or guidance data processed by the calculation section 50.
All screens necessary for navigation such as section map screens and intersection map screens are output in color display, and on this screen, buttons for setting route guidance, guidance during route guidance, and switching screens are displayed. In particular, passing intersection information such as the name of a passing intersection is displayed in a pop-up color on the section map screen at any time.

This display is provided in the instrument panel near the driver's seat, and the driver can confirm the current position of the vehicle by looking at the section map and obtain information on the route from now on. . Also,
The display 14 is provided with a touch panel 11 corresponding to the display of the function buttons, and is configured to execute the above-described operation based on a signal input by touching the button. The input signal generating means including the buttons and the touch panel constitutes an input section, but detailed description thereof will be omitted here.

The voice recognition device 12 constitutes an input signal generating means, and generates a signal to be processed by the arithmetic section 50 after the user recognizes the coordinate information input by voice through the microphone 12a. The current position detection unit 20 includes a GPS receiving device 21 that uses a satellite navigation system (GPS), a beacon receiving device 22, and a data transmitting / receiving device 23 that receives a GPS correction signal that uses, for example, a cellphone or FM multiplex signal, such as a geomagnetic field. An absolute azimuth sensor 24 including sensors and the like, a relative azimuth sensor 25 including, for example, a wheel sensor and a steering sensor, a distance sensor 26 that detects a traveling distance from the number of rotations of wheels, an acceleration sensor 27, and the like are provided.

The information storage device 30 stores map data, intersection data, node data, road data, photograph data, destination data, guide point data, detailed destination data, road name data, branch point data, which are necessary for route guidance. It is a database in which address data, display guidance data, voice guidance data, and destination information, passing point information, map display information, etc. as shown in FIG. 2 are recorded.

The data communication unit 40 stores a large amount of route guidance information and transmits / receives data to / from an external information center provided at the request of the user, or the user previously stores information storage media (digital data storage) such as an electronic notebook or IC card. Means) for storing destination information, and using this information to transmit / receive data for inputting point coordinates, and a telephone call for designating a point and acquiring surrounding information. After the destination is set, a telephone transmitting unit 42 for automatically making a telephone call for making a telephone contact with the destination is provided.

The arithmetic unit 50 is a CPU for executing arithmetic processing.
51, a program for performing processing such as route search, a display control required for route guidance, a program for performing voice output control required for voice guidance, and a first ROM 52-1 in which necessary data is stored, which is set RAM 53 for temporarily storing the point coordinates of a given point, searched route guidance information and data being processed, and a second ROM storing display information data necessary for route guidance and map display
52-2, an image memory 54 in which image data used for screen display on the display is stored, an image processor for extracting image data from the image memory based on a display control signal from the CPU 51, performing image processing, and outputting to the display 55, voice, phrase read from the information storage device 30 based on the voice output control signal from the CPU, 1
A voice processor 56 that synthesizes a set of sentences, sounds, etc., and converts the analog signal into an analog signal and outputs the analog signal to a speaker, a communication interface 57 that exchanges input / output data by communication, and a sensor signal of the current position detection unit 20 Sensor input interface 58, a clock 59 for entering the date and time in the internal diagnostic information, and the like. Here, the route guidance is configured so that the driver can select either screen display or voice output.

As shown in FIG. 5, the software configuration of the arithmetic unit 50 is such that an input processing unit 61 for processing information input from the touch switch 11 of the input / output unit 10, the voice recognition device 12, and the recording card reading device 13, Current position detector 20
A current position calculation unit 62 that calculates the current position of the vehicle based on the signal input from the map, a map drawing unit 63 that draws a map near the point searched at a predetermined scale and direction, a map, a section map, an intersection map, and Provides information such as remaining distance, name, and left / right turn at intersections that should be turned, teaches characteristic features, provides voice guidance, and guides by displaying route on map It includes a guide unit 64, a route search unit 65 for searching a route and setting a route on the basis of inputs of a departure place or a current place and a destination, and a passing point, and an overall control unit 66 for integrally controlling them.

The processing by the input processing unit 61 in the case of drawing a map and inputting a point is performed by the map drawing information D-3 in FIG. 2 with reference coordinates, scales and directions drawn in the drawing as shown in FIG.
Initially set to the map drawing unit 63 through the integrated control unit 66.
Issue a map drawing request to. Then, the map drawing unit 63 waits for the end of the map drawing and draws the touch panel key to determine the touch panel input. When the touch panel is input, touch panel selection processing is performed. In the touch panel selection process, as shown in FIG. 7, first, it is determined whether the screen is touched, the passing point set key is selected, or the destination set key is selected. In the case of screen touch, the touch position on the screen is converted to east longitude and north latitude coordinates, and the map display information D-3
To set. Also, in case of selecting the passing point set key,
Set the screen center (north latitude, east longitude) coordinates to the passing point information D-2, and if the destination set key is selected, set the screen center (north latitude, east longitude) coordinates to the destination information D-1 and start searching. Make a request.

Next, the screen transition and map switching processing at the time of setting a point will be described. 8 is a diagram for explaining an example of a destination setting screen, FIG. 9 is a diagram for explaining an example of screen scrolling, FIG. 10 is a diagram for explaining an example of passing point setting, and FIG. 11 is a route. FIG. 12 is a diagram for explaining an example of a screen scroll when setting a passing point during guidance, FIG. 12 is a diagram showing an example of a screen of a telephone number index, and FIG. 13 is a diagram for explaining an example when a telephone number is not registered. FIG. 14, FIG. 14 is a diagram for explaining the processing in the case of destination setting, and FIG. 15 is a diagram for explaining an example of a point set for destination setting.

When the destination setting or passing point setting switch is touched on the screen shown in FIG. 3B displayed by the map index, the scale of the currently displayed map is 1 as shown in FIG. 8A. 8 directions to judge whether it is a wide area map of 40,000 or more, and if it is a wide area map, switch to the detailed view and display it, and perform fine adjustment as shown in FIG. 8B. Display the cursor △. When the alignment is required, the 8-direction cursor Δ is operated, and when the cross mark is in a predetermined position, the point setting switch is touched to complete the destination setting and the passing point setting.

Further, when it is desired to move an arbitrary position on the displayed map screen to the center, if the position is touched as shown in FIG. 9A, the touch is made as shown in FIG. 9B. Scroll the screen so that the selected position is displayed in the center position. Therefore, when the passing point setting switch is touched, it is determined whether or not it is a wide area map as in the case described with reference to FIG. 8 and a detailed diagram is displayed, and the passing point setting switch is touched by touching the point setting switch as shown in FIG. Is completed. Reference numeral 90 in FIG. 9B is a frame showing a range that is enlarged and displayed when a point setting switch for passing point setting or destination setting is pressed.

When setting a passing point during route guidance as shown in FIG. 11 (a), even if a desired point is touched, the touched position is centered as shown in FIG. 11 (b). Since the display position is scrolled to, the touch point setting switch can be touched to set the touch point in the same manner as in FIG.

In the case of the telephone number index, if "telephone number index" is touched on the menu screen shown in FIG. 12 (a), the telephone number index screen shown in FIG. 12 (b) is displayed. Touch to enter the phone number.
Depending on whether the entered phone number is registered,
If the phone number is not registered, the area map corresponding to the area / city code of the entered phone number is shown in Fig. 13 (b).
It is displayed as shown in. Therefore, when it is desired to specify the vicinity of Fujioka town, by touching the vicinity of Fujioka town, the map centering on Fujioka town is scrolled and displayed as shown in FIG. 14, so when the destination setting switch is touched, The determination process of FIG. 8A is performed, and as shown in FIG. 15, the 8-direction cursor Δ for fine adjustment and the cross mark are displayed, and the position corresponding to the cross mark when the point set switch is touched is displayed. Set it as the destination. If the entered telephone number is registered, the screen shown in FIG. 15 is immediately displayed.

Next, the process of switching to the detailed view will be described. FIG. 16 is a diagram for explaining the switching process to the 1 / 40,000 map, FIG. 17 is a diagram for explaining the switching process to the 1/16 detailed map, and FIG. 18 is a detailed map including the touched area. FIG. 19 is a diagram for explaining the switching process to, FIG. 19 is a diagram for explaining the touch area detection process, and FIG. 20 is a diagram for explaining the detailed scale determination process.

In the case of setting a point, the scale for confirming the point with a certain degree of accuracy is generally 1 / 40,000 maps, so in this example, 1 / 40,000 maps are used as detailed maps. Therefore, when switching to the detailed view,
As shown in FIG. 6, it is determined whether the current scale is wider than 1 / 40,000 maps, and if it is wide, the map is switched to 1 / 40,000 maps.

As the detailed scale including the touched point, a scale A that becomes 1/16 details is calculated as shown in FIG. 17, and it is checked whether the scale A is more detailed than the most detailed view. The scale A is switched within the range of. To switch to the detailed view including the touched area, as shown in FIG. 18, the touch area is detected and the detailed scale A is determined from the height Y and the width X of the touch area. Then, as in the case of FIG. 16, it is checked whether or not the scale A is more detailed than the most detailed view, and the scale A is switched to within the range of the most detailed view.

The detection of the touch area in this case is performed by referring to FIG.
As shown in, touch detection data in the horizontal direction and the vertical direction are acquired and counted. Then, as shown in FIG. 20, the detailed scale is determined by the vertical distance Y ′ = from the height Y.
(Y + 1) × bi, lateral distance from width X X ′ = (X + 1)
Calculate xai. Note that ai and bi are display scales.
Indicates the coefficient at i. Next, the vertical distance Y ′ is changed to the horizontal distance X ″.
= Y ′ × C and the horizontal distance X ′ is compared with the converted distance X ″. If X ′ ≧ X ″, the detailed scale A = f (X ′) is determined from X ′. If not, the detailed scale A = f (X ″) is determined from X ″. Here, in the calculation of the distance, +1 is set because the touch detection position is a point and has a step, so that when viewed as an area, the touch detection positions adjacent to both sides are considered.

The present invention is not limited to the above embodiment, but various modifications can be made. For example, in the above embodiment, when switching to the detailed view, the determination is made on the basis of whether the area is wider than 1 / 40,000, but a detailed view may be used or a scale for 1/16 detail may be used. The scale may be 1/8 in detail. Further, although the touch panel is used as the input means in the present embodiment, a key or a point displayed on the display screen may be designated and input using a controller, for example.

[Brief description of drawings]

FIG. 1 is a diagram for explaining one embodiment of a navigation device according to the present invention.

FIG. 2 is a diagram showing a configuration example of map display / point information in a data storage unit.

FIG. 3 is a diagram showing an example of a menu screen and a map display screen.

FIG. 4 is a diagram showing a configuration example of each unit of the navigation device.

FIG. 5 is a diagram illustrating a configuration example of software of a calculation unit.

FIG. 6 is a diagram for explaining a processing flow of an input processing unit.

FIG. 7 is a diagram illustrating a flow of touch panel selection processing.

FIG. 8 is a diagram for explaining an example of a destination setting screen.

FIG. 9 is a diagram for explaining an example of screen scrolling.

FIG. 10 is a diagram for explaining an example of passing point setting.

FIG. 11 is a diagram for explaining an example of screen scroll when setting a passing point during route guidance.

FIG. 12 is a diagram showing an example of a telephone number index screen.

FIG. 13 is a diagram for explaining an example when a telephone number is not registered.

FIG. 14 is a diagram for explaining processing in the case of destination setting.

FIG. 15 is a diagram for explaining an example of a point set for destination setting.

FIG. 16 is a diagram for explaining processing for switching to a 1 / 40,000 map.

FIG. 17 is a diagram for explaining a 1/16 detailed map switching process.

FIG. 18 is a diagram for explaining a switching process to a detailed map including a touched area.

FIG. 19 is a diagram for explaining touch area detection processing.

FIG. 20 is a diagram illustrating a detailed scale determination process.

FIG. 21 is a diagram showing an example of inputting points by a conventional navigation device.

[Explanation of symbols]

1 ... Data storage unit, 2 ... Display, 3 ... Switch,
4 ... Image processor, 5 ... Data processing unit

Claims (5)

[Claims] 1. Map data having drawing information of maps at a plurality of scales, display means for displaying the map at an arbitrary scale, input means for inputting keys and points displayed on the display means, and map. Display control means for reading the data and displaying the map on the display means and for displaying the detailed view by switching to a predetermined scale on the condition that the instruction for setting the point is given by the input means. A navigation device characterized in that a detailed view is displayed by scrolling a map displayed on a display means or switching a scale by an input operation. 2. The display control means scrolls the point on the map designated by the input means to the center of the screen of the display means, and switches to a predetermined scale when the point for setting the location is designated by the input means. The navigation device according to claim 1, wherein the navigation device displays data. 3. The display control means scrolls the spot on the map designated by the input means to the center of the screen of the display means, and maps the range to be switched and displayed when the designation of the spot is made by the input means. The navigation device according to claim 2, wherein the navigation device is displayed above. 4. The navigation device according to claim 2, wherein the display control means specifies an area by the input means and switches to a reduced scale for displaying the specified area as a detailed view. 5. The navigation device according to claim 2, wherein the display control means switches to a scale for enlarging the map being displayed to a predetermined magnification.