JPH09280874A - Dynamic reduced scale decision display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display a well-balanced and easy-to-see picture without operation by user by automatically calculating a reduced scale from a positional relationship between a destination and a present place and dynamically changing the reduced scale. SOLUTION: A distance calculation part 103 calculates a distance from a present place to a destination by using the destination position from a destination input part 101 and the present position from a present position acquisition part 102, and sends the distance to a reduced scale judgment part 105. The reduced scale judgment part 105 refers to a relation between the distance and the scale accumulated in a judgment condition accumulation part 104 based on the distance, and sends the judgment result to a coordinate transformation part 107 as a reduced scale. The coordinate transformation part 107 transforms actual coordinates of the positions of the present place and destination into coordinates for displaying on a screen based on the scale from the reduced scale judgment part 105 and the display conditions accumulated in the display condition accumulation part 106. A picture display part 108 plots the transformed coordinates from the coordinate transformation part 107 on the screen as a picture to display.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dynamic scale determination display device in a system for graphically displaying a positional relationship between a present location and a destination.

[0002]

2. Description of the Related Art A conventional system for graphically displaying a positional relationship between a present location and a destination uses a technique in which a user selects and determines one of a plurality of menu items whose scales are preset. For example, in selecting a map scale of a car navigation system, a user uses a technique of selecting one of several menu items in which scale values are written and switching the display screen.

[0003]

However, in the system for graphically displaying the positional relationship between the present location and the destination, when the conventional technique is used, the positional relationship between the screen and the displayed positional relationship is displayed unless the user sets an appropriate scale. May become unbalanced. Also, when the user performs other work while looking at such a screen, the scale cannot be set, and thus there is a possibility that an unbalanced image may be continuously viewed. For example, in a car navigation system, driving and running may be performed with reference to the navigation screen, but it is extremely dangerous to operate the car navigation system in a state where the screen and the displayed positional relationship are unbalanced.

The present invention has been made by paying attention to such a problem, and an object thereof is that the user always has to be aware of an appropriate scale and the danger to the user. In order to solve the problem that a large operation may be required, the user operates by automatically calculating the scale from the positional relationship between the destination and the current location and dynamically changing this scale. Without,
An object is to provide a dynamic scale determination display device capable of providing a user with a well-balanced and easy-to-see screen.

[0005]

To achieve the above object, the first invention is to input a destination in a dynamic scale determination display device which graphically displays the positional relationship between the present location and the destination. Location input means, current location acquisition means for acquiring the current location, destination input by the destination input means, and distance calculation means for calculating the distance between the destinations based on the current location acquired by the current location acquisition means. , A scale determination unit for storing a scale determination condition, a scale calculated from the distance calculated by the distance calculation unit, and a scale stored in the determination condition storage unit, and displayed on the screen. Using the display condition accumulating means for accumulating the display condition, the scale determined by the scale determining means, and the display condition accumulated by the display condition accumulating means. A destination input by the destination input means, coordinate conversion means for converting the position coordinates of the current location acquired by the current location acquisition means, and display means for displaying the position coordinates converted by the coordinate conversion means as an image. To do.

A second aspect of the present invention is a dynamic scale determination display device for graphically displaying the positional relationship between the current location and the destination, and a destination input means for inputting the destination and a current location acquiring means for obtaining the current location. A transit point storage means for storing a history of transit points based on the current location from the current location acquisition means, and a calculation range input means for inputting a display range of the history stored in the transit location storage means as a calculation range, The destination input by the destination input means,
Calculate the distance between the coordinate group of the calculation range and the minimum and maximum values of the destination based on the history of the passage points stored by the passage point storage means and the calculation range input by the calculation range input means. A distance calculation means, a judgment condition accumulating means for accumulating conditions for judging a scale, a scale judging means for judging a scale from the distance calculated by the distance calculating means, and the judgment conditions accumulated by the judgment condition accumulating means. A display condition accumulating means for accumulating display conditions to be displayed on the screen, a scale determined by the scale determining means, and a display condition accumulated by the display condition accumulating means, and a purpose input by the destination input means. A coordinate conversion means for converting the position coordinates of the ground and the history of the passage points stored by the passage point storage means; The position coordinates and a display means for displaying an image.

A third aspect of the present invention is a dynamic scale determination display device for graphically displaying the positional relationship between the current location and the destination, and a destination input means for inputting the destination and a current location acquiring means for obtaining the current location. A calculation condition accumulating means for accumulating calculation conditions, a display condition accumulating means for accumulating display conditions to be displayed on the screen, a destination input by the destination inputting means, and a current location acquired by the current location acquiring means, Scale calculation means for calculating an optimum scale based on the calculation conditions accumulated by the calculation condition accumulating means and the display conditions accumulated by the display condition accumulating means,
Using the scale calculated by the scale calculating means and the display conditions accumulated by the display condition accumulating means, the position coordinates of the destination input by the destination input means and the current position acquired by the current position acquiring means are converted. The coordinate conversion means and the display means for displaying the position coordinates converted by the coordinate conversion means as an image are provided.

The above-mentioned configuration solves the problem that the user must always be aware of an appropriate scale and the problem that the user may be requested to perform a dangerous operation. By automatically calculating the scale from the positional relationship between the current location and the current location, and dynamically changing the scale, it is possible to provide a well-balanced and easy-to-see screen to the user without any user operation. Become.

[0009]

DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. In all the drawings for explaining the embodiments, the same elements are designated by the same reference numerals, and the repeated description thereof will be omitted.

FIG. 1 is a diagram showing a configuration of a first embodiment of the present invention. A destination input section 101 for inputting a position of a destination of the user, a GPS (Grobal Positioning System), a gyro sensor and the like are used by the user. Current position acquisition unit 102 for acquiring the current position of the current position, and distance calculation for calculating the distance between the current position and the destination using the position of the destination from the destination input unit 101 and the position of the current position from the current position acquisition unit 102. A unit 103, a determination condition storage unit 104 that stores the relationship between the distance between the current location and the destination and the scale for determining the scale for displaying the positional relationship between the current location and the destination on the screen,
The scale determination unit 10 that determines the scale using the distance between the current position and the destination from the distance calculation unit 103 and the relationship between the distance between the current position and the destination stored in the determination condition storage unit 104 and the scale.
5, a display condition storage unit 106 that stores display condition parameters such as the size of the screen and a display area in the screen, the position of the destination from the destination input unit 101, and the present location acquisition unit 102.
Coordinate conversion for converting the actual coordinates of the position of the destination and the current position to the coordinates for display on the screen using the position of the current position, the scale from the scale determination unit 105, and the display condition parameters from the display condition storage unit 106. Unit 107 and coordinate conversion unit 10
The image display unit 108 that displays the images of the destination and the current location on the screen using the converted coordinates of the positions of the destination and the current location from 7
Is provided.

FIG. 2 shows the actual coordinates C (x _c , y _c ) of the position of the destination input by the destination input unit 101 and the current position acquisition unit 1.
The real coordinates P (x _i , y _i ) of the position of the current position acquired in 02
It is an example showing and on the coordinate axes.

Step S of the flowchart shown in FIG.
1 and S2 are an example of an algorithm when the distance calculation unit 103 calculates the distance α between the current position and the destination. FIG.
Is an example showing the relationship between the scale S and the distance α [km] between the current location and the destination stored in the determination condition storage unit 104.

Step S1 of the flowchart shown in FIG.
1 and S12 are an example of an algorithm for determining the scale by the scale determining unit 105. FIG.
6 is an example of the on-screen coordinate system used by the coordinate conversion unit 107 and the image display unit 108, and display condition parameters stored in the display condition storage unit 106.

In FIG. 7, the display condition parameters stored in the display condition storage unit 106 are 20 inches and the aspect ratio is 3: 4.
It is an example of giving the screen of. Steps S21 to S24 of the flowchart shown in FIG. 8 are an example of an algorithm for converting the real coordinates of the position of the destination and the current position into the coordinates to be displayed on the screen in the coordinate conversion unit 107.

FIG. 9 is an example in which the positions of the destination and the current location are displayed on the screen of the image display unit 108. FIG. 10 is a diagram showing the configuration of the second embodiment of the present invention, which is a destination input unit 101 for inputting the position of the destination of the user and a GPS (Groba
current position acquisition unit 102 for acquiring the position of the user's current position by using a Positioning System) or a gyro sensor,
The position and time of the current location acquired by the current location acquisition unit 102 are set as a set, and a transit point storage unit 111 that stores the history of the transit points and a display range of the history of the transit points stored by the transit point storage unit 111 are displayed. Calculation range input unit 112 to be input as a calculation range, the position of the destination from destination input unit 101, the history of passage points stored by passage point storage unit 111, and the calculation input by calculation range input unit 112 Using the range, the distance calculation unit 103 that calculates the distance between the minimum value and the maximum value of the coordinate group of the calculation range and the destination, and the scale for displaying the positional relationship between the current location and the destination on the screen are determined. A determination condition storage unit 104 that stores the relationship between the distance between the current location and the destination and the scale for
The scale determination unit 105 that determines the scale using the distance between the minimum value and the maximum value from the distance calculation unit 103 and the relationship between the distance between the minimum value and the maximum value stored in the determination condition storage unit 104 and the scale.
And a display condition storage unit 106 that stores display condition parameters such as a screen size and a display area in the screen, a position of a destination from the destination input unit 101, and a passage point storage unit 111.
History of passage points and scale determination unit 105 stored by
Coordinates for converting the position coordinates of the destination input by the destination input unit 101 and the history of the passage points stored by the passage point storage unit 111 using the scale from the display condition parameter and the display condition parameter from the display condition storage unit 106. Converter 107
And an image display unit 108 that displays the position coordinates converted by the coordinate conversion unit 107 as an image.

FIG. 11 shows an example of the history of passage points stored in the passage point storage unit 111. FIG. 12 is an example of a screen that is input by the user as the calculation range when the travel history is displayed retroactively by the time specified in the past by the calculation range input unit 112.

FIG. 13 shows an example in which the history of destinations and passage points is displayed on the screen of the image display unit 108. FIG. 14 is a diagram showing the configuration of the third embodiment of the present invention, which includes a destination input unit 101 for inputting the position of the destination of the user and a GPS (G
current position acquisition unit 102 for acquiring the position of the current position of the user by a robal positioning system) or a gyro sensor.
A calculation condition storage unit 121 that stores conditions for calculating the optimum scale, a display condition storage unit 106 that stores display condition parameters to be displayed on the screen, and a destination input unit 1
01, the position of the current location acquired by the current location acquisition unit 102, and the calculation condition storage unit 121.
Based on the calculation condition parameters stored by the display condition storage unit 106 and the display condition parameters stored by the display condition storage unit 106, a scale calculation unit 122 that calculates an optimum scale, a scale calculated by the scale calculation unit 122, and a display condition storage unit. Using the display condition parameters accumulated by 106,
A coordinate conversion unit 107 for converting the position coordinates of the destination input by the destination input unit 101, the current position acquired by the current position acquisition unit 102, and an image display unit for displaying the position coordinates converted by the coordinate conversion unit 107 as an image. 1
08 and.

FIG. 15 shows an example of the calculation condition parameters stored in the calculation condition storage unit 121. FIG. 16 is an example of an algorithm for calculating the optimum scale by the scale calculator 122.

The operation of the first embodiment of the present invention will be described below. In FIG. 1, the destination input unit 101 receives a setting input regarding the position of the destination from the user, and sends the received position of the destination to the distance calculation unit 103 and the coordinate conversion unit 107.

The current position acquisition unit 102 acquires the position of the current position of the user from GPS or a gyro sensor, and sends the acquired position of the current position to the distance calculation unit 103 and the coordinate conversion unit 107. FIG. 2 illustrates the coordinates P (x _i , y _i ) of the current position and the coordinates C (x _c , y _c ) of the destination and the length α of the line segment PC in these real coordinate systems (x, y). It was done.

The distance calculation unit 103 includes a destination input unit 101.
Using the position of the destination from and the position of the current position from the current position acquisition unit 102, the distance between the current position and the destination is calculated by the algorithm shown in FIG.
It is sent to the scale determination unit 105 as [km].

The scale determination unit 105 determines the determination condition storage unit 1 based on the distance α [km] calculated by the distance calculation unit 103.
The distance α between the present location and the destination shown in FIG.
The coordinate conversion unit 107 refers to the relationship between [km] and the scale S, and sets the result determined by the algorithm shown in the figure as the scale S.
To send to. Here, when the distance α [km] fluctuates in the vicinity of the boundary value of the judgment value, the scale S may frequently fluctuate. In such a case, the algorithm shown in FIG. It is only necessary to add an algorithm that changes the scale S only when it changes to a certain threshold or more.

The coordinate conversion unit 107 uses the algorithm shown in FIG. 8 to determine the actual coordinates P (x
_i , y _i ) and C (x _c , y _c ) are _calculated by the scale determination unit 105.
Based on the reduced scale S from the display condition and the display condition stored in the display condition storage unit 106, the coordinates P ′ to be displayed on the screen are displayed.
(X _i ′, y _i ′) and C ′ (x _c ′, y _c ′). In this case, the display condition, that is, the x'-direction length X of the screen of the coordinate system (x ', y') shown in FIG. 6, which is the x'direction length, and the y'direction length of the screen, y '. The length Y of the displayable area, the margin length d _x in the x ′ direction which is the margin length at both ends of the screen in the x ′ direction, and the margin length d _y in the y ′ direction which is the margin length at both ends of the screen in the y ′ direction are It is calculated using the values specifically set on the screen of 20 inches and the aspect ratio of 3: 4, which is stored in the display condition storage unit 106.

The image display unit 108 has the coordinates P ′ (x _i ′, y _i ′) and C ′ (x) after the conversion from the coordinate conversion unit 107.
_c ′, y _c ′) is displayed as an image as shown in FIG. In addition, in general, between the actual coordinates and the screen,

[0025]

[Equation 1] The relationship between the size of the screen and the margin is X> 2d _x ,
There is a relation of Y> 2d _x , but when actual data is applied to this, it becomes as follows.

For example, in the destination input section 101, the user selects x _c = + 16 [km] and y _c = + 6 [km] as the destination.
Is input, and the current location acquisition unit 102 sets x _i = − as the current location.
It is assumed that 8 [km] and y _i = −4 [km] are acquired.

The distance calculation unit 103 includes a destination input unit 101.
Using the position of the destination from and the position of the current location from the current location acquisition unit 102, the distance between the current location and the destination is calculated as α = 26 [km] by the algorithm shown in FIG. 3, and the calculation result is scaled. It is sent to the determination unit 105.

Based on the calculation result of the distance α = 26 [km] from the distance calculating unit 103, the scale determining unit 105 stores the distance α [between the present position and the destination shown in FIG. km] and the scale S, the scale is reduced to S = f (26) = 1/10 by the algorithm shown in FIG.
The determination result is 0000 and the determination result is sent to the coordinate conversion unit 107.

Based on the scale S = 1/100000 from the scale determination unit 105, the coordinate conversion unit 107 stores x ′ displayable area direction length X shown in FIG. 7 stored in the display condition storage unit 106.
= 16 × 2.54 [cm], y ′ displayable area length Y =
12 × 2.54 [cm], x′-direction margin length d _x = 0 [c
m], y′-direction margin length d _y = 0 [cm], and FIG.
According to the above algorithm, the coordinates P ′ (x _i ′, y _i ′) to be displayed on the screen from the real coordinates P (x _i , y _i ) and C (x _c , y _c ) of the positions of the current position and the destination And C '(x
_c ′, y _c ′) is calculated and converted as follows, and the conversion result is sent to the image display unit 108.

Xi '= + 8.32 [cm], yi' = +
10.24 [cm] xc '= + 32.32 [cm], yc' = + 20.24
[Cm] The image display unit 108 plots and displays the coordinates after conversion from the coordinate conversion unit 107 as an image on the screen as shown in FIG. 9.

Next, the operation of the second embodiment of the present invention will be described. In FIG. 10, the destination input unit 101 receives a setting input regarding the position of the destination from the user, and sends the received position of the destination to the distance calculation unit 103 and the coordinate conversion unit 107. The current location acquisition unit 102 is a GP
The position of the current position of the user is acquired from S, a gyro sensor, or the like, and the acquired position of the current position is sent to the passage point storage unit 111.

The passing point storage unit 111 is the current location acquisition unit 1.
In the form shown in FIG. 11, P _i (x _i , y _i ) (i = 1, 1,
2, ... N) is stored as a history of passing points, and the stored history is stored in the distance calculation unit 103 and the coordinate conversion unit 10.
7

The calculation range input unit 112 displays the screen shown in FIG. 12 in order to input the display range of the history of passage points stored in the passage point storage unit 111 as a calculation range, and displays only the time designated in the past. The distance calculation unit 1 receives the setting input from the user to display the travel history retroactively.
Sent to 03.

The distance calculation unit 103 includes a destination input unit 101.
The position P _j (x _j , y _j ) that is the start of the calculation range is calculated using the position of the destination from and the history of the passage point from the passage point storage unit 111 and the calculation range from the calculation range input unit 112.
Positions P _j , P after (any one of j = 1, 2, ..., N)
_{j + 1} , ..., P _n are extracted from the history of passage points, and the coordinate group therein and the minimum value x _min = of the destination C (x _c , y _c ) from the destination input unit 101 are extracted. min (x _j ,
x _{j + 1} , ..., x _n , x _c ) and y _min = min (y _j ,
y _{j + 1} , ..., Y _n , y _c ) and the maximum value x _max = max
(X _j , x _{j + 1} , ..., X _n , x _c ) and y _max = max
(Y _j , y _{j + 1} , ..., y _n , y _c ) are calculated, and the distance α [km] between these two points (x _min , y _min ) and (x _max , y _max ) is _plotted . Calculation is performed by the same method as the algorithm shown in FIG. 3, and the calculation result is sent to the scale determination unit 105.

Based on the calculation result of the distance α [km] from the distance calculation unit 103, the scale determination unit 105 stores the distance α [km] shown in FIG.
And the scale S is calculated by the algorithm shown in FIG.
Is determined, and the determination result is determined by the coordinate conversion unit 107.
To send to.

The coordinate conversion unit 107 repeats the algorithm of FIG. 8 based on the scale S from the scale determination unit 105 and the display condition parameters shown in FIG. History P _i (x
_i , y _i ) (i = j, j + 1, ... N) and the destination C (x
_c , y _c ) to display the coordinates P _i ′ (x
_i ′, y _i ′) (i = j, j + 1, ... n) and C ′ (x
_c ′, y _c ′), and the image display unit 108
Send the conversion result to.

Based on the coordinates P'and C'after conversion from the coordinate conversion unit 107, the image display unit 108 displays the coordinates as shown in FIG.
As shown in 3, the image is plotted and displayed on the screen. Next, the operation of the third embodiment of the present invention will be described. In FIG. 14, the destination input unit 101 receives a setting input regarding the position of the destination from the user, and the received position of the destination is calculated by the scale calculation unit 122 and the coordinate conversion unit 1.
It is sent to 07.

Further, the current position acquisition unit 102 acquires the position of the current position of the user from the GPS or gyro sensor, and sends the acquired position of the current position to the scale calculation unit 122 and the coordinate conversion unit 107.

The scale calculation unit 122 includes a destination input unit 101.
The position of the destination from, the position of the current position from the current position acquisition unit 102, the display condition parameters shown in FIG. 7 accumulated in the display condition accumulation unit 106, and the calculation conditions shown in FIG. 15 accumulated in the calculation condition accumulation unit 121. The optimum scale is calculated according to the parameters based on the algorithm of FIG. 16, and the obtained scale is sent to the coordinate conversion unit 107.

This algorithm proceeds in the following procedure. First, calculation condition parameters, position coordinates of the current position and the destination, and display condition parameters are set as variables. Next, the scale S _x is calculated as the ratio of the x component of the display area to the x component of the distance between the current location and the destination.
At this time, when the x component of the distance between the current location and the destination is 0, K _x is given as the scale S _x for convenience.

Similarly, for the y component, the scale S _y is calculated as the ratio between the y component of the display area and the y component of the distance between the current position and the destination. At this time, when the y component of the distance between the current position and the destination is 0, K _y is given as the scale S _y for convenience. Next, the scales S _x and S _y are compared and the smaller value is adopted as the new scale S _n . This is a device for ensuring that the image is displayed on the screen. Next, the ratio S _n between the new scale S _n and the previous scale S _p
When / S _p is equal to or larger than the scale applicability determination parameter R indicating the scale ratio, that is, R is larger than the scale immediately before.
When should the display be much enlarged adopts a new scale S _n as scale S to be applied by screen, conversely, the ratio S _n / S _p new scale S _n and the previous scale S _p is less R If it is, the coordinates of the current position are acquired again and set in a variable, and the above processing is repeated. Further, by substituting S _n into S _p and performing the above-described repeated processing, the screen is appropriately enlarged in R units.

Although the algorithm for enlarging is described here, the algorithm for enlarging is also described.
The ratio S between the new scale S _n of the above algorithm and the previous scale S _p
It can be applied by using S _p / S _n instead of _n / S _p . In addition, immediately after the comparison judgment of S _n / S _p and R of the algorithm for enlargement described above, the comparison judgment of S _p / S _n and R for judgment of reduction is added to dynamically enlarge and reduce at the same time. You can also create an algorithm that changes to.

The coordinate conversion unit 107 repeats the algorithm of FIG. 8 based on the scale S from the scale determination unit 105 and the display condition parameters shown in FIG. History P _i (x
_i , y _i ) (i = j, j + 1, ... N) and the destination C (x
_c , y _c ) to display the coordinates P _i ′ (x
_i ′, y _i ′) (i = j, j + 1 ..., N) and C ′ (x
_c ′, y _c ′), and the image display unit 108
Send the conversion result to.

The image display unit 108 plots and displays the coordinates as an image on the screen based on the coordinates P ′ and C ′ after the conversion from the coordinate conversion unit 107. The present invention is not limited to the above embodiment. For example, although the above embodiment has been described using the xy coordinate system, r-θ
The actual position of your current location and destination, such as coordinate system, latitude and longitude,
Anything that can identify the position on the screen may be used. Also, x
The coordinate axes such as the axes and the y-axis may be set so that the position can be specified. Further, in the above-described embodiment, the display image of the current location and the destination is the minimum configuration, and a configuration in which the scale of the actual map is given and the positions of the current location and the destination are mapped by using the present invention is also considered. be able to.

[0045]

According to the present invention, the problem that the user must always be aware of an appropriate scale and the problem that the user may be requested to perform a dangerous operation can be solved. By automatically calculating the scale from the positional relationship between the present location and dynamically changing the scale, it is possible to provide the user with a well-balanced and easy-to-see screen without operating the scale.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a first embodiment of the present invention.

FIG. 2 is a diagram showing an example of a real coordinate system of a destination and a current location.

FIG. 3 is a diagram showing an example of an algorithm for calculating a distance between a current location and a destination.

FIG. 4 is a diagram showing an example of a relationship between a distance between a current location and a destination and a scale.

FIG. 5 is a diagram showing an example of a scale determination algorithm.

FIG. 6 is a diagram showing an example of a display condition parameter coordinate system.

FIG. 7 is a diagram showing an example of display condition parameter setting values.

FIG. 8 is a diagram showing an example of a coordinate conversion algorithm.

FIG. 9 is a diagram showing an example of a screen display of a destination and a current location.

FIG. 10 is a diagram showing a configuration of a second embodiment of the present invention.

FIG. 11 is a diagram showing an example of a history of passing points.

FIG. 12 is a diagram showing an example of a screen on which a user inputs a calculation range.

FIG. 13 is a diagram showing an example of a screen display of a history of destinations and passage points.

FIG. 14 is a diagram showing a configuration of a second exemplary embodiment of the present invention.

FIG. 15 is a diagram showing an example of calculation condition parameters.

FIG. 16 is a diagram showing an example of an optimal scale calculation algorithm.

[Explanation of symbols]

101 ... Destination input section, 102 ... Current location acquisition section, 103
... Distance calculation unit, 104 ... Judgment condition storage unit, 105 ... Scale judgment unit, 106 ... Display condition storage unit, 107 ... Coordinate conversion unit, 108 ... Image display unit, 111 ... Passage point storage unit, 1
12 ... Calculation range input unit, 121 ... Calculation condition storage unit, 12
2 ... Scale calculator.

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Tatsuro Suzuki Nippon Telegraph and Telephone Corporation, 3-19-2 Nishishinjuku, Shinjuku-ku, Tokyo

Claims (3)

[Claims] 1. A dynamic scale determination display device for graphically displaying a positional relationship between a current location and a destination, a destination input means for inputting a destination, a current location obtaining means for obtaining the current location, and the destination input means. Based on the destination input by the present location and the current location acquired by the current location acquisition means, a distance calculation means for calculating a distance between the two, a determination condition storage means for storing a scale determination condition, and the distance calculation means The scale determination unit that determines the scale from the distance calculated by the determination condition storage unit and the determination condition stored by the determination condition storage unit, the display condition storage unit that stores the display condition displayed on the screen, and the scale determination unit. Using the reduced scale and the display conditions accumulated by the display condition accumulating means, the destination input by the destination input means and the current A dynamic scale determination display device comprising: coordinate conversion means for converting the position coordinates of the current location acquired by the ground acquisition means; and display means for displaying the position coordinates converted by the coordinate conversion means as an image. . 2. A dynamic scale determination display device for graphically displaying a positional relationship between a current location and a destination, a destination input means for inputting a destination, a current location obtaining means for obtaining a current location, and a current location obtaining means. The passing point storage means for storing the history of passing points based on the present location of the, the calculation range input means for inputting the display range of the history stored in the passing point storage means as the calculation range, and the destination input means The input destination, and the history of passage points stored by the passage point storage means,
Based on the calculation range input by the calculation range input means, distance calculation means for calculating the distance between the coordinate group of the calculation range and the minimum and maximum values of the destination, and a judgment for accumulating conditions for judging the scale. A condition accumulating unit, a scale determining unit that determines a scale from the distance calculated by the distance calculating unit, and a determination condition accumulated by the determining condition accumulating unit, and a display condition accumulating unit that accumulates a display condition to be displayed on the screen. A scale determined by the scale determining unit and a display condition accumulated by the display condition accumulating unit, the destination input by the destination input unit, and the passing point stored by the passing point storing unit. Coordinate conversion means for converting the position coordinates of the history, and display means for displaying the position coordinates converted by the coordinate conversion means as an image. Dynamic scale determination display device characterized by. 3. A dynamic scale determination display device for graphically displaying a positional relationship between a current location and a destination, a destination input means for inputting a destination, a current location acquiring means for obtaining the current location, and a calculation condition is accumulated. Calculation condition storage means, display condition storage means for storing display conditions to be displayed on the screen, destination input by the destination input means, current location acquired by the current location acquisition means, and calculation condition storage means A scale calculation means for calculating an optimum scale based on the accumulated calculation conditions and the display conditions accumulated by the display condition storage means, a scale calculated by the scale calculation means, and the display condition storage means. Using the display conditions, the destination input by the destination input means and the position of the current location acquired by the current location acquisition means A dynamic scale determination display device comprising: coordinate conversion means for converting the positional coordinates; and display means for displaying the position coordinates converted by the coordinate conversion means as an image.