JP2004028678A - Input display device and input display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To switch and display, easily and quickly, the scale reduction ratio of a map displayed on a navigation screen. <P>SOLUTION: A navigation device 1 determines whether the locus of an inputted touch instruction is approximately circular or not based on X, Y coordinates of the touch instruction detected by a touch panel 15b. When the locus of the touch instruction is approximately circular, the device 1 determines which of magnification and reduction is instructed based on the input direction wherein the approximately circular locus is inputted. The device 1 calculates the center of the inputted approximately circular locus, displays display information displayed on the center on the center of a display part 15a, extracts the nearest point from the external periphery of the touch panel 15b, determines the scale reduction ratio based on the separation distance from the point to the external periphery, magnifies or reduces map information, and displays it on the display part 15a. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an input display device and an input display method.
[0002]
[Prior art]
Conventionally, a navigation device is provided with a storage device for storing map information corresponding to a plurality of scales in advance, and map information of a scale set by default is selected and read out from the storage device, and a predetermined scale is read. A scaled map is displayed on the navigation screen. Therefore, the user manually enlarges or reduces the map as necessary, and displays a wide area map or a detailed map according to the user's purpose.
[0003]
Here, as a method of reducing and enlarging the map by a user's manual operation, for example, in the case of an input display device provided with a touch panel, the user can select an enlargement / reduction key displayed on the navigation screen. There is a method of giving a touch instruction a plurality of times in accordance with the scale ratio to be performed. Thus, according to the number of touch instructions, map information of a predetermined scale is read from the storage device, and a map of a target scale is displayed.
[0004]
[Problems to be solved by the invention]
However, in such a conventional navigation input display device, when an enlargement / reduction key is touched, for example, 2 times, 4 times, 8 times,. .., × 2, ４ ×, ８ ×,..., Are enlarged or reduced stepwise at predetermined intervals, so that the map can be displayed at the exact scale desired by the user. There were cases where it could not be displayed. In addition, there is a problem that the touch instruction must be performed many times before the target scale is reached, which is troublesome. Alternatively, an announcement to enlarge or reduce the map is provided by voice guidance every time the map is enlarged or reduced, which is troublesome and consumes more on-vehicle battery than necessary.
[0005]
Furthermore, since it is difficult for the user to intuitively grasp the scale that can be switched with a single touch instruction, it is necessary to display a map each time the scale is switched in a stepwise manner. Here, the scale is switched by one touch instruction, and it takes several seconds for the map information to be read. Therefore, there is a problem that it takes a considerable amount of time to display the map of the target scale. .
[0006]
An object of the present invention is to provide an input display device and an input display method capable of easily and quickly switching and displaying the scale of a map displayed on a navigation screen.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides
Display control means for acquiring the map information from a storage means for storing map information which can be displayed at an arbitrary scale, and displaying the map information on a display means, and a position for detecting position coordinates corresponding to an input operation on the surface of the display means An input display device comprising:
Determining means for determining whether the position coordinates of the input operation detected by the position detecting means are drawing a predetermined trajectory,
Direction detecting means for detecting an operation direction of the input operation detected by the position detecting means, when it is determined by the determining means that the position coordinates of the input operation is drawing a predetermined locus,
The display control means enlarges or reduces the map information displayed on the display means and displays the map information on the display means in accordance with the operation direction of the input operation detected by the direction detection means.
[0008]
In the present invention,
Distance calculation means for calculating a separation distance from the trajectory of the input operation to the outer periphery of the display means based on the position coordinates of the input operation detected by the position detection means;
Scale ratio calculation for calculating a scale ratio of map information based on a separation distance from the trajectory of the input operation calculated by the distance calculation unit to an outer periphery of the display unit and an operation direction detected by the direction detection unit. Means,
The display control means preferably enlarges or reduces the map information based on the scale calculated by the scale calculation means and displays the map information on the display means.
[0009]
In the present invention,
A center calculating unit configured to calculate a substantially center of a trajectory of the input operation based on a position coordinate of the input operation detected by the position detecting unit;
It is preferable that the display control means arranges and displays the map information displayed substantially at the center of the trajectory of the input operation calculated by the center calculation means at the center of the display means.
[0010]
Further, the present invention provides
A step of acquiring the map information from a storage unit that stores map information that can be displayed at an arbitrary scale, and displaying the map information on a display unit, and a step of detecting position coordinates according to an input operation on a surface of the display unit, In the input display method including
A step of determining whether or not the position coordinates of the detected input operation are drawing a predetermined trajectory;
A step of detecting an operation direction of the detected input operation when it is determined that the position coordinates of the input operation are drawing a predetermined trajectory;
According to the operation direction of the detected input operation, a step of enlarging or reducing the map information displayed on the display means and displaying the map information on the display means,
It is characterized by including.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the scope of the invention is not limited to the illustrated example. Hereinafter, a case where the input display device of the present invention is applied to a navigation device will be described as an example.
[0012]
First, the configuration of the present embodiment will be described.
FIG. 1 is a block diagram illustrating a main configuration of a navigation device 1 according to the present embodiment. As shown in FIG. 1, the navigation device 1 includes a CPU 11, a GPS unit 12 including a GPS antenna 12a, an autonomous navigation unit 13, a memory 14, an input display device 15 including a display unit 15a and a touch panel 15b, and a storage device including a map information DB 16a. 16 and each unit is connected by a bus.
[0013]
The CPU 11 reads and executes various system programs stored in the storage device 16 to drive and control each unit of the navigation device 1. Further, based on data input through the GPS unit 12, the autonomous navigation unit 13, the input display device 15, and the like, various application programs for navigation stored in the storage device 16 are read, and the current position detection processing, route Various kinds of processing such as search processing and enlargement / reduction processing are executed, and the processing results are displayed on the display unit 15a. The CPU 11 has functions as a display control unit, a determination unit, a direction detection unit, a distance calculation unit, a scale calculation unit, and a center calculation unit of the present invention.
[0014]
Specifically, the CPU 11 executes a later-described enlargement / reduction process (see FIG. 4) as a characteristic process of the present invention. Here, the function of the CPU 11 when executing the enlargement / reduction processing will be described with reference to FIGS. First, when executing a scaling process, the CPU 11 obtains X and Y coordinates of the input touch instruction when the touch instruction input by the user is detected by the touch panel 15b.
[0015]
Here, the CPU 11 determines whether or not the X and Y coordinates detected by the touch panel 15b draw a substantially circular locus. When the detected X and Y coordinates depict a locus of a point, a line, or another shape, the CPU 11 performs a process according to the touch instruction. When the X and Y coordinates detected by the touch panel 15b describe a substantially circular locus, the CPU 11 determines whether the detected substantially circular locus has been input clockwise or counterclockwise. Judge.
[0016]
Here, when the trajectory has been input clockwise, the CPU 11 determines that the touch instruction is an enlargement instruction. Then, as illustrated in FIG. 2A, the CPU 11 determines, on the X and Y coordinates of the detected trajectory, positions that are closest to the outer periphery of the touch panel 15 b, that is, the four sides forming the outer end of the displayable area. , The X and Y coordinates of the four points A to D are extracted. Further, the CPU 11 calculates an intersection G of the extracted four points A to D.
[0017]
Subsequently, as shown in FIG. 2B, the CPU 11 arranges the display information so that the acquired intersection G is located at the center, and outputs the four points A ′ to D ′ corresponding to the four points A to D. X and Y coordinates are calculated. Next, based on the calculated X and Y coordinates of the four points A ′ to D ′, the distances a to d from the four points A ′ to D ′ to the outer periphery of the touch panel 15b are calculated, and the distances from the outer periphery are calculated. Extract the point with the closest distance. Here, in FIG. 2B, since the distance from the four points A ′ to D ′ to the outer periphery is a <c <d <b, the point closest to the outer periphery is the point A '.
[0018]
Then, in a state where the intersection G of the four points is arranged at the center of the display unit 15a, the CPU 11 displays the display information currently displayed at the point A 'on the perpendicular h drawn from the point A' to the outer periphery. The map information is enlarged and displayed on the display unit 15a such that the map information is located at the point P where the outside and the outside cross.
[0019]
More specifically, the CPU 11 calculates the distance a from the point A ′ to the point P (that is, the distance from the point A ′ to the outer periphery) and the distance from the point G ′ to the point P (that is, from the point G ′). The distance (g) to the outer periphery is obtained, and (ga) is calculated. Here, when the vertical length in the displayable area of the touch panel 15b is 1 and the horizontal length is m, g is m / 2 and (ga) is (m / 2-a). Then, since the CPU 11 enlarges (m / 2-a) to m / 2 and displays it, the scale factor is m / (m-2a). Therefore, the CPU 11 arranges the intersection G at the center of the display unit 15a and multiplies the currently displayed map information by m / (m−2a), thereby reducing the display information displayed at the point A ′. The map information can be enlarged and displayed so as to be located at the point P.
[0020]
On the other hand, as shown in FIG. 3A, when the touch instruction is input counterclockwise, the CPU 11 determines that the touch instruction is a reduction instruction. Then, the CPU 11 extracts the X and Y coordinates of the four points A to D closest to the four sides constituting the outer periphery of the touch panel 15b, and calculates the intersection G of the four points A to D. Subsequently, as shown in FIG. 3B, the CPU 11 arranges the display information so that the acquired intersection G is located at the center, and sets the four points A ′ to D ′ corresponding to the four points A to D. X and Y coordinates are calculated.
[0021]
Then, the CPU 11 calculates distances a to d from the four points A ′ to D ′ to the outer periphery based on the calculated X and Y coordinates of the four points A ′ to D ′, respectively, and The closest point is extracted. Here, in FIG. 3B, since the distance from the four points A ′ to D ′ to the outer periphery is c <a <d <b, the point closest to the outer periphery is the point C '.
[0022]
Then, the CPU 11 displays the point P where the perpendicular h drawn from the point C ′ to the outer periphery intersects the outer periphery in a state where the four intersections G are arranged at the center of the display unit 15a. The map information is reduced so that the display information is located at the point C ′, and the map is displayed on the display unit 15a.
[0023]
More specifically, the CPU 11 calculates the distance c from the point C ′ to the point P (that is, the distance from the point C ′ to the outer periphery) and the distance from the point G ′ to the point P (that is, from the point G ′). The distance (g to the outer periphery) g is obtained, and (g−c) is calculated. Here, when the vertical length in the displayable area of the touch panel 15b is 1 and the horizontal length is m, g is m / 2, and (g−c) is (m / 2−c). Therefore, the CPU 11 displays m / 2 by reducing it to (m / 2-c), so that the scale is (m-2c) / m. Therefore, the CPU 11 arranges the intersection G at the center of the display unit 15a and multiplies the currently displayed map information by (m−2c) / m, thereby changing the display information displayed at the point P to the point P. The map information can be reduced and displayed so as to be located at C '.
[0024]
Returning to FIG. 1, the GPS unit 12 includes a GPS antenna 12a and receives GPS signals transmitted from a plurality of GPS satellites launched in low earth orbit. The GPS antenna 12a receives GPS signals transmitted from at least three GPS satellites, detects an absolute current position (latitude, longitude) of the vehicle based on the received GPS signals, and outputs the detected current position to the CPU 11.
[0025]
The autonomous navigation unit 13 includes an angle sensor, a distance sensor, and the like. The angle sensor detects the angular velocity of the vehicle (the rotation angle in the horizontal direction per unit time) and calculates the amount of change in the moving direction. The distance sensor detects a pulse signal output according to the rotation of the wheel, and calculates the amount of movement of the vehicle. The autonomous navigation unit 13 calculates a relative position change of the vehicle based on the angular velocity signal and the vehicle speed pulse signal, and outputs the change to the CPU 11.
[0026]
The memory 14 includes a random access memory (RAM), a read only memory (ROM), and the like, and forms a work area for temporarily storing various programs executed by the CPU 11 and data related to the various programs.
[0027]
The input display device 15 includes a display unit 15a and a touch panel 15b. The display unit 15a includes an LCD (Liquid Crystal Display) or the like, and displays navigation display information input from the CPU 11 and input information input via the touch panel 15b. The touch panel 15b detects the position coordinates (X, Y coordinates) pointed by the touch based on the optical, infrared scanning, and retroreflective coordinate reading principles, and outputs the detected position coordinates to the CPU 11 as position signals. The display unit 15a has a function as a display unit of the present invention, and the touch panel 15b has a function as a position detection unit of the present invention.
[0028]
The storage device 16 includes a recording medium (not shown) in which programs, data, and the like are stored in advance. In the recording medium, various applications of the navigation device 1 executed by the CPU 11 and data related to these programs are stored. And so on. For example, on a recording medium, various programs such as a current position detection process, a route search process, and an enlargement / reduction process for performing the above process, and various setting data relating to the operation of the navigation device 1 are recorded. A map information database (DB) 16a in which map information corresponding to the scale is stored. The storage device 16 has a function as a storage unit of the present invention.
[0029]
Specifically, the map information DB 16a includes, for example, a nationwide map in which a Japanese map is drawn at a scale of about 1 / 1,000,000, a local map including three neighboring prefectures at a scale of about 1 / 400,000, and a scale of 1/20. A regional map of about 10,000 prefectures, a city map of about 1 / 100,000 city scale, a detailed city map of about 1 / 50,000 scale, a detailed enlarged view of about 120,000 to 1/1500 scale Etc. are stored as map information. Since the map is created by vector input, it can be enlarged or reduced at any scale.
[0030]
The map information includes map data used for detection of the current position of the vehicle, map matching, display of navigation, etc., attributes of roads (for example, road names, national roads, prefectural roads, toll roads, or one-way roads), It includes various symbol data such as road connections (for example, three-way intersections, crossroads, T-shaped roads, etc.), roads, facilities, seas, lakes and the like.
[0031]
Next, the operation of the present embodiment will be described.
A program for realizing each function described in the flowchart of FIG. 4 described below is stored in the storage device 16 in the form of a readable program code, and the CPU 11 complies with the program code. Execute the operation sequentially. Further, it is also possible to execute an operation specific to this embodiment using a program / data externally supplied from a CD-ROM, a DVD-ROM or the like (not shown).
[0032]
FIG. 4 is a flowchart showing the enlargement / reduction processing executed by the CPU 11. As shown in FIG. 4, when an input of a touch instruction is detected by the touch panel 5b (step S1), the CPU 11 acquires X and Y coordinates corresponding to the input touch instruction (step S2). Next, the CPU 11 determines whether or not the X and Y coordinates of the acquired touch instruction describe a substantially circular trajectory (step S3). When a line or another figure is drawn (step S3; NO), other processing according to the touch instruction is executed.
[0033]
On the other hand, when the X and Y coordinates of the acquired touch instruction describe a substantially circular trajectory (step S3; YES), the CPU 11 determines whether the substantially circular trajectory is input clockwise or counterclockwise. Is determined (step S4). Here, when the locus of the input touch instruction is clockwise (step S4; YES), the CPU 11 determines that the touch instruction is an enlargement instruction.
[0034]
Subsequently, the CPU 11 extracts the X and Y coordinates of the four points A to D having the shortest distance from the four sides constituting the outer periphery of the touch panel 15b (step S5), and extracts the extracted four points A to D. Is calculated (step S6). Subsequently, the CPU 11 arranges the obtained intersection point G at the center of the display unit 15a (step S7) and calculates the X and Y coordinates of the four points A ′ to D ′ corresponding to the four points A to D, respectively. Then, the CPU 11 extracts, from the calculated four points A ′ to D ′, a point having the closest distance from the outer periphery (step S8).
[0035]
Further, the CPU 11 calculates a separation distance from the extracted point to the outer periphery, and calculates a scale factor based on the separation distance. Then, the CPU 11 arranges the intersection G at the center of the display unit 15a, enlarges and displays the map information based on the calculated scale factor (step S9), and ends the main scaling process.
[0036]
On the other hand, returning to step S4, when the locus of the input touch instruction is counterclockwise (step S4; NO), the CPU 11 determines that the touch instruction is a reduction instruction. Subsequently, the CPU 11 extracts the X and Y coordinates of the four points A to D having the shortest distance from the four sides constituting the outer periphery of the touch panel 15b (step S10), and extracts the extracted four points A to D. Is calculated (step S11). Next, the CPU 11 arranges the acquired intersection G at the center of the display unit 15a (step S12), and calculates the X and Y coordinates of the four points A ′ to D ′ corresponding to the four points A to D, respectively.
[0037]
Then, the CPU 11 extracts, from the calculated four points A ′ to D ′, the point closest to the distance from the outer periphery (step S13). Further, the CPU 11 calculates a separation distance from the extracted point to the outer periphery, and calculates a scale of map information to be displayed based on the separation distance. Then, the CPU 11 arranges the intersection G at the center of the display unit 15a, displays the map information on a reduced scale based on the calculated scale factor (step S14), and ends the main scaling process.
[0038]
As described above, according to the present embodiment, CPU 11 of navigation device 1 has a substantially circular trajectory of an input touch instruction based on the X and Y coordinates of the touch instruction detected by touch panel 15b. If the trajectory of the touch instruction is substantially circular, it is determined which of the enlargement and reduction instructions is based on the input direction in which the substantially circular trajectory is input. In addition, the center of the input substantially circular locus is calculated, the display information displayed at the center is arranged at the center of the display unit 15a, and the closest point from the outer periphery of the touch panel 15b is extracted. The scale is determined based on the distance from this point to the outer periphery, and the map information is enlarged or reduced and displayed on the display unit 15a.
[0039]
Therefore, when enlarging or reducing the map information currently displayed on the display unit 15a, the user draws a substantially circular trajectory in a desired area of the display unit 15a from one of the left and right directions. By displaying the area surrounded by the substantially circular locus in the center, the scale information is determined according to the shortest separation distance from the outer periphery of the touch panel to the substantially circular locus, and the map information is enlarged or reduced. Can be displayed.
[0040]
Thereby, the user can save time and effort for enlarging or reducing the map information step by step, and can suppress the voice guidance performed every time an instruction for enlarging or reducing is input to one guidance. In addition, at the time of enlargement, the map information can be enlarged so that a substantially circular area is displayed on substantially the entire surface of the display unit 15a. Can be entered. On the other hand, at the time of reduction, since the map information currently displayed on the display unit 15a can be reduced and displayed so as to substantially fit in the substantially circled area, the reduced map information is intuitively displayed. Can be recognized.
[0041]
In addition, since the area surrounded by the substantially circular locus is arranged and displayed at the center of the display unit 15a, the area desired by the user can always be displayed at the position where it is most easy to see. That is, for example, as the image is enlarged, the target area is not pushed out of the display screen, and as the image is reduced, the target area is not lost. Furthermore, since the operation of enlargement and movement can be performed by one operation, operability is improved.
[0042]
The above description of the present embodiment is an example of a preferred navigation device 1 according to the present invention, and the present invention is not limited to this.
In the present embodiment, the case where the trajectory input by the touch instruction is substantially circular has been described as an example. However, the present invention is not limited to this, and it is possible to input the instruction using trajectories of various other shapes. . For example, when an input is performed by a linear touch instruction on the touch panel 15b, the enlargement or reduction is determined according to the input direction, and the scale factor is set according to the length of the input straight line. It may be configured to calculate and display map information. Further, similarly to the method described above, the X and Y coordinates of the start point and the end point of the straight line may be calculated, and the scale factor may be calculated based on the distance from the outer periphery of the touch panel 15b. Further, the center of the input straight line may be calculated, and the calculated center may be arranged at the center of the display unit 15a and displayed.
[0043]
Further, in the present embodiment, the scale is determined according to the shortest separation distance from the outer periphery of the touch panel to the substantially circular locus. However, the present invention is not limited to this, and the scale is determined according to the longest separation distance. May be determined. In addition, the enlargement or reduction is determined according to the left and right direction of the input operation, but it is needless to say that these can be arbitrarily changed.
[0044]
In addition, the detailed configuration and detailed operation of the navigation device 1 according to the present embodiment can be appropriately changed without departing from the spirit of the present invention.
[0045]
【The invention's effect】
According to the present invention, it is possible to enlarge or reduce map information at a scale desired by a user and display the map information promptly on the display unit by a simple operation on the display unit without requiring complicated operations. .
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a navigation device 1 according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating an input operation of an enlargement instruction on a display unit 15a and a method of determining a scale factor.
FIG. 3 is a diagram illustrating an input operation of a reduction instruction on a display unit 15a and a method of determining a reduction ratio.
FIG. 4 is a flowchart illustrating a scaling process executed by a CPU 11 of FIG. 1;
[Explanation of symbols]
1 navigation device 11 CPU
12 GPS unit 12a GPS antenna 13 Autonomous navigation unit 14 Memory 15 Input display device 15a Display unit 15b Touch panel 16 Storage device 16a Map information DB

Claims (4)

Display control means for acquiring the map information from a storage means for storing map information which can be displayed at an arbitrary scale, and displaying the map information on a display means, and a position for detecting position coordinates corresponding to an input operation on the surface of the display means An input display device comprising:
Determining means for determining whether the position coordinates of the input operation detected by the position detecting means are drawing a predetermined trajectory,
Direction detecting means for detecting an operation direction of the input operation detected by the position detecting means, when it is determined by the determining means that the position coordinates of the input operation is drawing a predetermined locus,
The input display, wherein the display control means enlarges or reduces the map information displayed on the display means and displays the map information on the display means according to the operation direction of the input operation detected by the direction detection means. apparatus. Distance calculation means for calculating a separation distance from the trajectory of the input operation to the outer periphery of the display means based on the position coordinates of the input operation detected by the position detection means;
Scale ratio calculation for calculating a scale ratio of map information based on a separation distance from the trajectory of the input operation calculated by the distance calculation unit to an outer periphery of the display unit and an operation direction detected by the direction detection unit. Means,
2. The input display device according to claim 1, wherein the display control unit enlarges or reduces the map information and displays the map information on the display unit based on the scale calculated by the scale calculation unit. 3. A center calculating unit that calculates an approximate center of the trajectory of the input operation based on the position coordinates of the input operation detected by the position detecting unit;
2. The display control unit according to claim 1, wherein the map information displayed substantially at the center of the trajectory of the input operation calculated by the center calculation unit is displayed at the center of the display unit. 2. The input display device according to 2. A step of acquiring the map information from a storage unit that stores map information that can be displayed at an arbitrary scale, and displaying the map information on a display unit, and a step of detecting position coordinates according to an input operation on a surface of the display unit, In the input display method including
A step of determining whether or not the position coordinates of the detected input operation are drawing a predetermined trajectory;
A step of detecting an operation direction of the detected input operation when it is determined that the position coordinates of the input operation are drawing a predetermined trajectory;
According to the operation direction of the detected input operation, a step of enlarging or reducing the map information displayed on the display means and displaying the map information on the display means,
An input display method comprising:

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