JP2009236817A - Display, display control method, display control program, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a user to easily obtain the scale of a screen currently displayed. <P>SOLUTION: The display 100 displays a map on the screen with superimposing thereon a mark indicating the current position. The display 100 includes a setup part 101, a display control part 102, and a display part 103. The setup part 101 sets up one scale from a plurality of different scales. The display control part 102 displays the map on the screen and changes the display mode of the mark according to the scale set up by the setup part 101. The display part 103 outputs a screen controlled by the display control part 102. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a display device, a display control method, a display control program, and a recording medium. However, the present invention is not limited to the above-described display device, display control method, display control program, and recording medium.

  Conventionally, a mobile device such as a vehicle is equipped with a display device that displays a map screen on a display, such as a navigation device. In such a display device, in addition to displaying only the map screen, the mark indicating the current position is superimposed on the map screen, or the mark indicating the current position is superimposed on the map screen. The route to the ground is displayed. When displaying the map screen, for example, by setting one of a plurality of different scales, the map data of the set scale is displayed (for example, see Patent Document 1 below).

JP-A-9-34351

  However, in the technique of Patent Document 1 described above, since the scale is displayed as a bar at the corner of the screen so as not to impair the visibility of the map screen, the user pays attention to the scale when grasping the scale ratio. There was a problem of having to. Thus, with the conventional technology, it is impossible to grasp the scale at a glance. For example, when a driving driver grasps the scale, the screen is watched, which is not preferable for safe driving. The problem was an example.

  In order to solve the above-described problems and achieve the object, a display device according to a first aspect of the present invention is a display device that displays a map on a screen by superimposing a mark indicating a current position, and displays a map from a plurality of different scales. Setting means for setting the scale ratio, and display control means for displaying the map on the screen and changing the display mode of the mark according to the scale ratio set by the setting means. Features.

  The display control method according to the invention of claim 7 is a display control method for a display device that displays a map on a screen by superimposing a mark indicating the current position, and sets one scale factor from a plurality of different scale factors. It includes a setting step, and a display control step for displaying the map on the screen and changing the display mode of the mark according to the scale ratio set in the setting step.

  A display control program according to the invention of claim 8 causes a computer to execute the display control method according to claim 7.

  A recording medium according to a ninth aspect of the invention is characterized in that the display control program according to the eighth aspect is recorded in a computer-readable manner.

  Exemplary embodiments of a display device, a display control method, a display control program, and a recording medium according to the present invention will be explained below in detail with reference to the accompanying drawings.

(Embodiment)
(Functional configuration of display device)
A functional configuration of the display device 100 according to the embodiment of the present invention will be described. FIG. 1 is a block diagram illustrating an example of a functional configuration of the display device 100 according to the embodiment. The display device 100 displays a map on a screen with a mark indicating the current position superimposed. In FIG. 1, the display device 100 includes a setting unit 101, a display control unit 102, a display unit 103, a recording unit 104, a receiving unit 105, and a determining unit 106.

  The setting unit 101 sets one scale factor from a plurality of different scale factors. The scale ratio is set based on operation input from the user, voice input, or the like, or based on control of a controller or the like that sets the scale ratio in accordance with a change in the current position. Note that setting the scale ratio in accordance with the change of the current position specifically means that, for example, during the route guidance, the current position of the moving body and the next guidance point are always displayed on one screen, and the guidance point For example, the scale of the map is automatically refined as it approaches.

  The display control unit 102 displays the map on the screen and changes the display mode of the mark indicating the current position according to the scale ratio set by the setting unit 101. Examples of different display modes include changing the size of the mark, the degree of blinking of the mark, the color of the mark, and the like. Typically, this is for expressing the magnitude relationship of the scale ratio. For example, different characters may be displayed.

  The display unit 103 displays a map and a mark on the screen under the control of the display control unit 102. The display unit 103 uses a display that displays a map screen.

  The recording unit 104 records information related to a plurality of marks. Specifically, the information regarding the mark represents the shape, pattern, color, and the like of the mark, and may be information indicating the shape such as ◯, X, and Δ. Further, the information regarding the mark may be, for example, numerical information for expressing the magnitude relationship of the scale ratio.

  The numerical information includes information for attaching the order from the large scale to the small scale to the mark, information on the scale for directly displaying the scale on the mark, and the like. In the configuration including such a recording unit 104, the display control unit 102 changes the display mode of the mark using information regarding the mark recorded in the recording unit 104. The mark information can be appropriately updated according to the user's preference, for example, by receiving it from an external server and obtaining it.

  Further, the information related to the mark is specifically character information for expressing a plurality of different scale ratios. The recording unit 104 records, for each of a plurality of different scale factors, character information having an attribute suitable for expressing the scale factor. Specifically, the character information includes character image information, information indicating the character type, and attribute information. The character type is a character classification, for example, a classification such as “animal” or “vehicle”. The attribute information is information representing the size imaged by the user by the character.

  The display control unit 102 displays the character information recorded in the recording unit 104 corresponding to the scale ratio set by the setting unit 101. Specifically, the display control unit 102 displays character information having a larger attribute as the scale ratio set by the setting unit 101 is smaller (wide area map).

  Specifically, for example, in the case of an animal character, taking an elephant character and a mouse character as an example, the attribute information of the elephant is attribute information indicating a large one, and the attribute information of a mouse is indicating a small one It is attribute information. In this case, for example, a character image such as an elephant is used for a small scale (wide area map), and a character image such as a mouse is used for a large scale (detailed map).

  Further, when the setting of the scale ratio is changed by the setting unit 101, the display control unit 102 changes the scale ratio of the map after changing the display mode of the mark. That is, prior to changing the map screen, a mark with a different display mode is displayed. The time difference between the timing at which the mark display mode is changed and the timing at which the scale of the map is changed and displayed may be a slight difference that can be visually recognized by the user.

  The receiving unit 105 receives character information from an external server. The receiving unit 105 may receive, for example, character information distributed from an external server at regular intervals, or may be received as a result of transmitting information requesting the type of character information designated by the user. You may do it.

  Based on the attribute of the character information received by the receiving unit 105, the determining unit 106 determines a scale ratio corresponding to the character information. The determination unit 106 may determine the scale ratio corresponding to the character information by using a predetermined table corresponding to each type of attribute of the character, for example. The predetermined table is, for example, a table in which a scale ratio is associated with each size and weight as an attribute.

  Further, the determining unit 106 may relatively determine the scale ratio by comparing the attribute of the received character information with the attribute of the character information recorded in the recording unit 104. Relative determination of scale ratio means, for example, that character information is recorded in advance for each scale ratio, and the received character information attribute is closer to the character information among the recorded character information attributes Is determined as a scale similar to the closest character information.

  In the configuration including the receiving unit 105 and the determining unit 106, the recording unit 104 records the character information received by the receiving unit 105 for each scale ratio determined by the determining unit 106. Note that when recording information in the recording unit 104, a selection to record may be received from the user.

(Display control processing procedure performed by the display device)
Next, a display control processing procedure performed by the display device 100 will be described with reference to FIG. FIG. 2 is a flowchart illustrating an example of a display control processing procedure performed by the display device 100.

  In the flowchart of FIG. 2, the display device 100 determines whether or not there is an input for displaying a map screen (step S201). The input for displaying the map screen is, for example, when the power is turned on or when the television screen is switched to the map screen.

  It is in a standby state until there is an input for displaying the map screen (step S201: No loop). When there is such an input (step S201: Yes), the setting unit 101 sets the scale factor (step S202). This scale ratio is, for example, the scale ratio when it was displayed last time or the scale ratio input by the user this time.

  And the display control part 102 performs control which changes the display mode of the mark which shows a present position according to a reduced scale (step S203). After that, the display unit 103 displays a map screen on which a mark indicating the current position is superimposed (step S204), and the series of processing ends.

  As described above, since the display device 100 according to the present embodiment changes the display mode of the mark indicating the current position according to the set scale ratio, the scale indicating the mark indicating the current position is displayed. Can have a function. Accordingly, the user can easily grasp the scale ratio of the currently displayed map screen by looking at the mark indicating the current position. Therefore, it can contribute to safe driving.

  In addition, if the display mode is changed using information on the mark recorded in the recording unit 104, the user can easily grasp which mark corresponds to which scale factor, and easily It becomes possible to grasp the scale ratio.

  In addition, if the information regarding the mark is recorded as character information for expressing the magnitude relation of the scale ratio, and the character information corresponding to the set scale ratio is displayed, the user looks at the character at a glance. This makes it possible to easily grasp the scale ratio.

  In addition, if character information having a larger attribute is displayed as the set scale ratio is smaller, the user can grasp the scale ratio according to the size of the character to be imaged.

  In addition, when the scale setting is changed, if the map scale is changed and displayed after changing the display mode of the mark, the user can change the map screen prior to the change. Thus, a mark with a different display mode can be notified. That is, before the map screen is changed, the user can visually recognize the mark, thereby easily grasping the scale ratio.

  In addition, if the scale ratio corresponding to the character information is determined based on the newly received attribute of the character information and the determined scale ratio and the character information are recorded, the user's preference can be obtained. The corresponding character information can be appropriately received and used as a mark indicating the current location. Therefore, the user's preference can be reflected, that is, the character that is most easily grasped by the user can be displayed as a mark indicating the current position. Thereby, the user can easily grasp the scale ratio.

  Examples of the present invention will be described below. In the present embodiment, an example in which the display device 100 of the present invention is implemented by a navigation device mounted on a vehicle will be described.

(Hardware configuration of navigation device)
The hardware configuration of the navigation device 300 according to the present embodiment will be described with reference to FIG. FIG. 3 is a block diagram illustrating an example of a hardware configuration of the navigation device 300 according to the present embodiment. The navigation device 300 is mounted on a moving body such as a vehicle and can be connected to an external server (not shown) that distributes character information of a mark indicating the current position (hereinafter referred to as “own vehicle position mark”) via a network. Yes.

  In FIG. 3, a navigation device 300 includes a CPU 301, a ROM 302, a RAM 303, a magnetic disk drive 304, a magnetic disk 305, an optical disk drive 306, an optical disk 307, an audio I / F (interface) 308, and a speaker 309. An input device 310, a video I / F 311, a display 312, a communication I / F 313, a GPS unit 314, and various sensors 315. Each component 301 to 315 is connected by a bus 320.

  The CPU 301 governs overall control of the navigation device 300. The ROM 302 records various programs such as a boot program, a current location calculation program, a route search program, a route guidance program, a display control program, and a scale determination program. The RAM 303 is used as a work area for the CPU 301.

  The current location calculation program, for example, calculates the current location of the vehicle (the current location of the navigation device 300) based on output information from a GPS unit 314 and various sensors 315 described later.

  The route search program searches for an optimal route from the departure point to the destination point using map data or the like recorded on a magnetic disk 305 described later. Here, the optimum route is the shortest (or fastest) route to the destination point or the route that best meets the conditions specified by the user. Further, not only the destination point but also a route to a stop point or a rest point may be searched. The searched guidance route is output to the audio I / F 308 and the video I / F 311 via the CPU 301.

  The route guidance program is based on guidance route information searched by executing a route search program, vehicle current location information calculated by executing a current location calculation program, and map data read from the magnetic disk 305. Real-time route guidance information is generated. The generated route guidance information is output to the audio I / F 308 and the video I / F 311 via the CPU 301.

  The display control program uses the map information recorded on the magnetic disk 305 and the character image indicating the vehicle position mark according to the set scale, and displays information for displaying the character image superimposed on the map. This is a program to be output. The scale is a ruler displayed on the map screen so that the actually measured distance can be determined, and is the same as the scale factor. However, the scale indicates a wide area display as the value decreases, whereas the scale indicates a detailed display as the value decreases.

  Specifically, the display control program causes the character information of an attribute indicating that the size of the character image is larger as the set scale is larger (the scale ratio is smaller). The display control program includes a program for changing and displaying the scale of the map after changing and displaying the character image when the setting of the scale is changed.

  The map information and the character image as the vehicle position mark are output to the video I / F 311 via the CPU 301. Note that the display control unit 102 illustrated in FIG. 1 is realized by the CPU 301. That is, the function of the display control unit 102 is realized by the CPU 301 executing the display control program.

  The scale determination program is a program that determines the scale of the map data corresponding to the character based on the attribute of the character information received by the communication I / F 313. The determined scale is recorded on the magnetic disk 305 via the magnetic disk drive 304 or output to the video I / F 311. Note that the determination unit 106 illustrated in FIG. 1 is realized by the CPU 301. That is, the function of the determination unit 106 is realized by the CPU 301 executing the scale determination program.

  The magnetic disk drive 304 controls the reading / writing of the data with respect to the magnetic disk 305 according to control of CPU301. The magnetic disk 305 records data written under the control of the magnetic disk drive 304. As the magnetic disk 305, for example, an HD (hard disk) or an FD (flexible disk) can be used.

  Examples of information recorded on the magnetic disk 305 include a plurality of different map data. Map data has background data that represents features (features) such as buildings, rivers, and the surface of the earth, and road shape data that represents the shape of the road, and is composed of multiple data files divided by district. Has been. This map data is depicted two-dimensionally or three-dimensionally on the display screen of the display 312. When the navigation device 300 is guiding a route, the map data and the vehicle position mark indicating the current location of the vehicle acquired by the GPS unit 314 to be described later are displayed in an overlapping manner.

  An example of information recorded on the magnetic disk 305 is information on the vehicle position mark. The information related to the own vehicle position mark is, for example, character information for expressing a size relationship between a plurality of different scales. The character information includes character image information, character type information, and attribute information suitable for expressing the size of the scale for each of a plurality of different scales. The recording unit 104 shown in FIG. 1 is realized by the magnetic disk 305.

  The optical disk drive 306 controls the reading / writing of the data with respect to the optical disk 307 according to control of CPU301. The optical disk 307 is a detachable recording medium from which data is read according to the control of the optical disk drive 306. As the optical disc 307, a writable recording medium can be used. In addition to the optical disk 307, the removable recording medium may be an MO, a memory card, or the like.

  The audio I / F 308 is connected to a speaker 309 for audio output. The speaker 309 outputs sound. Examples of the input device 310 include a remote controller having a plurality of keys for inputting characters, numerical values, and various instructions, a keyboard, a mouse, and a touch panel. The input device 310 may be realized by any one of a remote controller, a keyboard, a mouse, and a touch panel, or may be realized by a plurality of forms.

  Using this input device 310, a scale setting is input from the user. In addition, using this input device 310, an input for making a request for distribution of a character image indicating the vehicle position mark is made from the user to the external server. The setting unit 101 shown in FIG. 1 is realized by the input device 310. In addition to this, when the CPU 301 executes a predetermined program, for example, every time the route approaches a guide point in the route, When changing the scale or the like, it is realized by the CPU 301.

  The video I / F 311 is connected to the display 312. Specifically, the video I / F 311 includes, for example, a graphic controller that controls the entire display 312, a buffer memory such as a VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and a graphic controller. Based on the output image data, the display 312 is configured by a control IC or the like.

  The display 312 displays icons such as the above-described marks, cursors, menus, windows, or various data such as characters and images. On the display 312, the above-described map data is drawn two-dimensionally or three-dimensionally. The map data displayed on the display 312 is displayed with the character image as the vehicle position mark superimposed.

  As this display 312, for example, a CRT, a TFT liquid crystal display, a plasma display, or the like can be adopted. The display 312 is installed near the dashboard of the vehicle, for example. A plurality of displays 312 may be installed in the vehicle, for example, in the vicinity of the dashboard of the vehicle or in the vicinity of the rear seat of the vehicle. The display unit 103 illustrated in FIG. 1 is realized by the display 312.

  The communication I / F 313 is connected to a network via wireless and functions as an interface between the navigation device 300 and the CPU 301. The communication I / F 313 is further connected to a communication network such as the Internet via wireless, and also functions as an interface between the communication network and the CPU 301. Further, the communication I / F 313 transmits information requesting character information used for the vehicle position mark from an external server, or receives character image information. The receiving unit 105 illustrated in FIG. 1 is realized by the communication I / F 313.

  The GPS unit 314 receives radio waves from GPS satellites and outputs information indicating the current location of the vehicle. The output information of the GPS unit 314 is used when the current position of the vehicle is calculated by the CPU 301 together with output values of various sensors 315 described later. The information indicating the current location is information for specifying one point on the map data, such as latitude / longitude and altitude.

  The various sensors 315 output information that can determine the position and behavior of the vehicle, such as a vehicle speed sensor, an acceleration sensor, and an angular velocity sensor. The output values of the various sensors 315 are used for the calculation of the current location of the vehicle by the CPU 301 and the measurement of the change in speed and direction.

  The setting unit 101, the display control unit 102, the display unit 103, and the recording unit 104 included in the display device 100 illustrated in FIG. 1 are the ROM 302, the RAM 303, the magnetic disk 305, and the optical disk in the navigation device 300 illustrated in FIG. The CPU 301 executes a predetermined program using the program and data recorded in 307 and the like, and realizes its function by controlling each unit in the navigation device 300.

  That is, the navigation device 300 according to the present embodiment executes the display control program recorded in the ROM 302 as a recording medium in the navigation device 300, so that the functions of the display device 100 shown in FIG. The display control processing procedure shown can be executed.

(An example of information on the vehicle position mark recorded on the magnetic disk)
Next, an example of information related to the vehicle position mark recorded on the magnetic disk 305 will be described with reference to FIG. FIG. 4 is an explanatory diagram showing an example of information related to the vehicle position mark recorded on the magnetic disk 305.

  In FIG. 4, the information 400 related to the vehicle position mark includes character information 410 and a scale 420 corresponding to the character information. Character information 410 includes image information and attribute information for each type. The image information indicates an image displayed as the vehicle position mark. The image information may include numerical information indicating the order from the small scale to the large scale and numerical information indicating the scale 420. That is, the numbers or numerical values may be displayed together with the image.

  Also, it is possible to provide the image information with hue information, for example, to increase the hue as the scale increases. In addition, by indicating arrows above and below the image information indicating 50 m to 500 m in the scale 420, it is possible to display that there are larger and smaller scales than the scale. In this case, for image information indicating 1 km, an arrow is displayed below the image information to indicate that there is only a small scale, and for image information indicating 25 m, an arrow is displayed above the image information. It is sufficient to indicate that there is only a large scale. The attribute information indicates the size and weight corresponding to each image information.

  To explain the type of animal as an example, among the attribute information, W (m) indicating the size decreases as W1 to W6. Further, the weight w (t) indicating the weight becomes lighter as w1 to w6. That is, the smaller the number shown on the scale 420 (the larger the scale ratio), the smaller the size and weight indicated by the attribute information. Similarly, for airplanes, fish, and cars, the smaller the number shown on the scale 420 (the larger the scale ratio), the smaller the size and weight indicated by the attribute information. Thus, character information is recorded for each of a plurality of different scales 420. The character information 410 corresponding to each scale 420 can be changed by an input from the user.

(Example of display control processing for changing the display mode of the vehicle position mark)
Next, an example of a display control process for changing the display mode of the vehicle position mark will be described with reference to FIG. FIG. 5 is a flowchart showing an example of display control processing for changing the display mode of the vehicle position mark.

  In the flowchart of FIG. 5, the CPU 301 of the navigation device 300 is in a standby state until the power is turned on (step S501: No loop), and when the power is turned on (step S501: Yes), the vehicle position is displayed on the display 312. The surrounding map is displayed (step S502). Then, the display 312 displays a screen that accepts a mode selection for whether or not to display the vehicle position mark on a scale (character display), and determines whether or not the mode for displaying the vehicle position mark on a scale is selected ( Step S503). Note that a screen for receiving mode selection for determining whether or not to display the vehicle position mark on a scale will be described later with reference to FIG.

  When the mode for displaying the vehicle position mark on a scale is selected (step S503: Yes), a screen for accepting selection of whether or not to specify the character type is displayed on the display 312, and the character type is specified. It is determined whether or not there is (step S504). A screen for accepting selection of whether or not to specify the character type will be described later with reference to FIGS. If it is determined that the character type is specified (step S504: Yes), the character of the specified type is extracted according to the scale (step S505).

  Then, after the extracted character is displayed on the map as the own vehicle position mark, the scale of the map is changed and displayed (step S506). Thereafter, for example, it is determined whether or not the scale of the map has been changed by an operation input using the input device 310 from the user (step S507). When the scale of the map is changed (step S507: Yes), it is determined whether or not the character type is designated in step S504.

  If it is determined in step S507 that the scale of the map is not changed (step S507: No), it is determined whether or not the power is off (step S508). When the power is turned off (step S508: Yes), a series of processing is terminated. On the other hand, if the power is not turned off (step S508: No), it is determined whether or not the character type is designated in step S504.

  On the other hand, if it is determined in step S504 that the character type is not specified (step S504: No), an arbitrary type of character is extracted according to the scale (step S509), and the vehicle position mark is displayed in step S506. Do it. The arbitrary type of character means that the type of character does not matter. As shown as the information 400 related to the vehicle position mark in FIG. 4, the different types of characters correspond to the scales. Yes. If the mode for displaying the vehicle position mark on the scale is not selected in step S503 (step S503: No), a fixed mark, such as a triangle, that is normally displayed is displayed on the map as the vehicle position mark ( Step S510), a series of processing ends.

  According to the above-described processing, the display position of the own vehicle position mark is made different according to the set scale, so that the own vehicle position mark can have a scale function. Therefore, the user can easily grasp the scale of the currently displayed screen by looking at the own vehicle position mark.

  In addition, information related to the vehicle position mark is recorded as character information for expressing the magnitude relationship of the scale, and the character information corresponding to the set scale is displayed. It becomes possible to grasp the scale easily.

  In addition, since the character information indicating that the attribute is large is displayed as the set scale is large (the scale ratio is small), the user can grasp the scale according to the size of the character to be imaged. it can.

  In addition, when the scale setting is changed, the display mode of the vehicle position mark is changed and then the map scale is changed so that the map screen is displayed to the user. Prior to this, it is possible to notify the vehicle position mark with a different display mode. That is, before the map screen is changed, the user can visually recognize the vehicle position mark, thereby easily grasping the scale.

(An example of a screen that accepts user selections)
Next, a screen for accepting mode selection will be described with reference to FIGS. FIG. 6 is an explanatory diagram showing a screen for accepting mode selection.

  In FIG. 6, the display 312 displays a selection screen for determining whether or not to display the vehicle position mark on a scale (character display). When “No” is selected on this display screen, the display is shifted to a screen that is normally displayed, for example, a triangular fixed mark and a vehicle position mark superimposed on a map. On the other hand, when “Yes” is selected, the screen shifts to a screen for accepting selection as to whether or not to specify the character type shown in FIG.

  FIG. 7 is an explanatory diagram showing an example of a screen for accepting selection as to whether or not to specify a character type. In FIG. 7, the display 312 displays a selection screen as to whether or not to specify the character type. If “No” is selected on this display screen, an arbitrary type of character is displayed on each scale. On the other hand, when “Yes” is selected, the screen shifts to a screen for accepting the character type shown in FIG.

  FIG. 8 is an explanatory diagram showing an example of a screen for accepting a character type. In FIG. 8, the display 312 displays a screen for accepting the character type. On this display screen, the selected type of character is displayed superimposed on the map for each scale.

(Example of display screen when the vehicle position mark is displayed on a scale)
Next, an example of a display screen when the vehicle position mark is displayed on a scale will be described with reference to FIGS. 9 and 10. FIG. 9 is an explanatory diagram showing an example of a display screen when the vehicle position mark is displayed on a scale of 500 m.

  In FIG. 9, a map screen 901, a character image 902 as a vehicle position mark, and a scale 903 are displayed on the display 312. The map screen 901 is a map having a scale of 500 m. The character image 902 is a bear mark displayed when a map is displayed on a scale of 500 m (see FIG. 4). A scale 903 indicates a ruler of the map screen 901, and can be prevented from being displayed. In this display screen, for example, when a change to the scale of 100 m is received by an input from the user, the screen shifts to the screen shown in FIG.

  FIG. 10 is an explanatory diagram showing an example of a display screen when the vehicle position mark is displayed on a scale of 100 m. In FIG. 10, the display 312 displays a map screen 1001, a character image 1002 as a vehicle position mark, and a scale 1003. The map screen 1001 is a map having a scale of 100 m. The character image 1002 is a wild boar mark displayed when a map is displayed on a scale of 100 m (see FIG. 4). A scale 1003 shows a ruler of the map screen 1001 and can be prevented from being displayed.

  With such a display screen, the user can easily grasp the scale of the currently displayed screen by looking at the own vehicle position mark.

(Example of scale determination process for determining the scale of received character information)
Next, an example of the scale determination process for determining the scale of the received character information will be described with reference to FIG. FIG. 11 is a flowchart illustrating an example of scale determination processing for determining the scale of received character information.

  In FIG. 11, the navigation apparatus 300 determines whether or not there is an operation for acquiring character information from the input device 310 by the user (step S1101). It is premised on that a predetermined screen is displayed from the display 312 when there is an operation for obtaining character information (step S1101: No loop), and there is an operation (step S1101: Yes). The input device 310 accepts designation of the character type (step S1102).

  Then, based on the received character type, the communication I / F 313 transmits information requesting character information to the external server (step S1103). Further, the CPU 301 determines whether or not the communication I / F 313 has received character information (step S1104). When the character information is received (step S1104: Yes), the received character information is displayed on the display 312 (step S1105).

  Then, the CPU 301 determines whether or not the input device 310 has received a selection for registering the received character information (step S1106). When the selection for registering the character information is accepted (step S1106: Yes), the received character information is compared with the attributes of the already recorded character information (step S1107). Based on the compared attributes, a scale corresponding to the received character information is determined (step S1108). After the determination of the scale in step S1108, it is recorded on the magnetic disk 305 as the vehicle position mark of the determined scale (step S1109), and the series of processing is terminated.

  Here, an example will be described. For example, when the type of character information is designated as “animal” (see step S1102), and registration of the character “Kirin” is received from the received character information. (See step S1106), among the attributes (size, weight, etc.) of the already recorded character information, those having an attribute close to that of the “Kirin” character are extracted. For example, if the character “Elephant” has already been recorded corresponding to the scale 1 km, the character “Elephant” is extracted, and the character “Giraffe” is associated with the scale 1 km instead of the character “Elephant”. (See step S1108). In this case, for example, the character information “Elephant” is deleted from the magnetic disk 305.

  Returning to the flowchart, if the communication I / F 313 does not receive character information in step S1104 (step S1104: No), the display 312 displays that character information does not exist (step S1110). Then, on the premise that a predetermined screen is displayed from the display 312, it is determined whether or not a character information type change has been accepted (step S1111).

  When the character information type change is accepted (step S1111: Yes), the designation of the character type in step S1102 is accepted. On the other hand, if it is determined in step S1111 that no character information type change is accepted (step S1111: No), the series of processing ends. In step S1106, if the selection for registering the character information is not accepted (step S1106: No), the character information type change in step S1111 is accepted.

  According to the above-described processing, the scale corresponding to the character information is determined based on the newly received attribute of the character information, and the determined scale and the character information are recorded. Character information corresponding to the user's preference can be received as appropriate and used for the vehicle position mark. Therefore, the user's preference can be reflected, that is, the character that is most easily grasped by the user can be displayed as the vehicle position mark. Thereby, the user can easily grasp the scale.

  As described above, according to the display device, the display control method, the display control program, and the recording medium of the present invention, the user can easily grasp the scale ratio of the currently displayed screen. . Therefore, it can contribute to safe driving.

  The display control method described in this embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer or a workstation. This program is recorded on a computer-readable recording medium such as a hard disk, a flexible disk, a CD-ROM, an MO, and a DVD, and is executed by being read from the recording medium by the computer. Further, this program may be a transmission medium that can be distributed via a network such as the Internet.

It is a block diagram which shows an example of a functional structure of the display apparatus concerning embodiment. It is a flowchart which shows an example of the display control processing procedure which a display apparatus performs. It is a block diagram which shows an example of the hardware constitutions of the navigation apparatus concerning a present Example. It is explanatory drawing which shows an example of the information regarding the own vehicle position mark recorded on a magnetic disc. It is a flowchart which shows an example of the display control process which changes the display mode of the own vehicle position mark. It is explanatory drawing which shows the screen which receives mode selection. It is explanatory drawing which showed an example of the screen which receives selection of whether to specify the kind of character. It is explanatory drawing which showed an example of the screen which receives the kind of character. It is explanatory drawing which shows an example of the display screen at the time of displaying the own vehicle position mark on a scale with a scale of 500 m. It is explanatory drawing which shows an example of the display screen at the time of displaying the own vehicle position mark on a scale with a scale of 100 m. It is a flowchart which shows an example of the scale determination process which determines the scale of the received character information.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Display apparatus 101 Setting part 102 Display control part 103 Display part 104 Recording part 105 Reception part 106 Determination part 300 Navigation apparatus 400 Information regarding own vehicle position mark

Claims (9)

In a display device that displays a map on the screen with a mark indicating the current position superimposed,
Setting means for setting one scale ratio from a plurality of different scale ratios;
Display control means for displaying the map on the screen and changing the display mode of the mark according to the scale ratio set by the setting means;
A display device comprising: It further comprises recording means for recording information on a plurality of the marks,
The display device according to claim 1, wherein the display control unit changes the display mode using information on the mark recorded in the recording unit. The information regarding the mark is character information for expressing the magnitude relationship between the plurality of different scale factors,
The recording means records the character information having an attribute suitable for expressing the scale factor for each of the plurality of different scale factors,
The display device according to claim 2, wherein the display control unit displays character information recorded in the recording unit corresponding to a scale ratio set by the setting unit.   The display device according to claim 2, wherein the display control unit displays the character information indicating that the attribute is larger as the scale ratio set by the setting unit is smaller.   The display control means, when the setting of the scale ratio is changed by the setting means, after changing the display mode of the mark, changing the scale ratio of the map and displaying it. The display apparatus as described in any one of -4. Receiving means for receiving the character information from an external server;
Determining means for determining the scale ratio corresponding to the character information based on the attribute of the character information received by the receiving means;
Further comprising
The display device according to claim 3, wherein the recording unit records the character information for each scale ratio determined by the determination unit. In a display control method for a display device that displays a map on a screen with a mark indicating a current position superimposed,
A setting step for setting one scale ratio from a plurality of different scale ratios;
In accordance with the scale ratio set in the setting step, the display control step for displaying the map on the screen and changing the display mode of the mark,
A display control method comprising:   A display control program for causing a computer to execute the display control method according to claim 7.   A computer-readable recording medium on which the display control program according to claim 8 is recorded.

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