JP4970181B2 - In-vehicle information terminal, control method thereof, and control program thereof - Google Patents

Description

  The present invention relates to a display technique when a map is scrolled, and relates to an in-vehicle information terminal that displays a relationship between a scroll point and a plurality of points such as a vehicle position and a destination using a figure from the viewpoint of direction and distance. .

  In recent years, with the spread of automobiles and the development of information processing technology, navigation devices are rapidly spreading as in-vehicle information terminals that are mounted on a moving body such as a vehicle and perform route guidance. The navigation device uses map data prepared in advance and displays not only the current position information of its own vehicle, which is measured by GPS, on the surrounding map, but also calculates the route to the specified destination and displays it on the screen. And synthetic voices to guide the route.

  Here, a general route guidance method will be described. First, a storage medium such as a CD-ROM, DVD-ROM, HDD, etc., using a database selected by quantifying roads, place names, buildings, etc. on a map as map data. In advance, the user sets a destination by using the map data. Then, the position information of the own vehicle is estimated by using at least one of self-contained navigation using a gyroscope and a vehicle speed pulse, and radio navigation using GPS and FM multiplexing, and according to road data in the map database, Search and calculate the taxiway from the estimated vehicle position to the set destination. Thereby, the route guidance is realized by displaying the calculated guide route and the vehicle position on the screen while performing map matching.

  In addition, regarding the map display of the navigation device as described above, scroll technology is generally adopted, and a map display area to be displayed by moving a cursor displayed in the center of the screen based on an input from the user is provided. Be changed. However, in the conventional scroll technology, if the map display area after scrolling is away from the current vehicle position, the vehicle position is not displayed on the screen, so the scroll point indicating the center of the map display area after scrolling There arises a problem that the positional relationship between the vehicle and the vehicle position cannot be grasped.

  Therefore, conventionally, even when the vehicle position is not displayed on the screen, a scrolling technique for displaying a single direction and distance connecting the vehicle position and the scroll point is provided. For example, as shown in FIG. 7, a dotted line that connects the scroll point and the vehicle position that is not displayed on the screen is shown, so that the vehicle position direction can be recognized.

In addition, there is provided a scroll technique for displaying a graphic indicating a single direction and distance connecting the vehicle position and the scroll point (see Patent Document 1). Specifically, a navigation device provided with means for displaying a linear figure extending from the scroll point to the boundary on the screen in the direction of the vehicle position and changing the thickness and tone of the figure corresponding to the distance between both sections Is provided.
JP 2005-30800 A

  By the way, in the said prior art, the linear figure which shows the single direction and distance from the own vehicle position to a scroll point is displayed, and the information from the other registration points etc. to the said scroll point should be provided. I couldn't. That is, for example, since it is not possible to indicate the direction and distance to the scroll point based on a plurality of points such as the vehicle position and the destination, if the user desires information from the plurality of points, this position Could not provide enough information to show the relationship.

  From this, as shown in FIG. 7 above, even though the positional relationship between the two sections can be grasped by the dotted line connecting the scroll position from the own vehicle position, the position of the destination cannot be recognized. When a guide route to a destination is searched by setting as a point, there may be a case where the reach distance increases remarkably. Therefore, it is necessary to keep track of the destination displayed in the map display area by repeating scrolling, not only causing inconvenience in operation, but also taking the location information of the destination into consideration and There was a need to scroll.

  Further, according to the above prior art, since the scroll point and the vehicle position are connected by a linear figure, if it is intended to display the positional relationship between a plurality of points and the scroll point by this figure, the screen is displayed. It is assumed that the information displayed above becomes complicated and it is difficult to recognize the positional relationship with a plurality of points.

  The present invention has been proposed in order to solve the above-described problems, and its purpose is to intuitively transmit directions and distances from a plurality of points to a scroll point even when the map is scrolled. It is to provide an in-vehicle information terminal, a control method thereof, and a control program.

The present invention solves the above problems by the following means.
The invention according to claim 1 is an in-vehicle information terminal comprising: an input unit that receives an operation from a user through a touch key or a hard key; a detection unit that detects a destination and a current vehicle location; and a display unit that displays a map. The scroll means for scrolling the map displayed on the display section based on the user's input via the input section, and the destination and the current vehicle location detected by the detection section are connected via the scroll means. Display determination means for determining whether or not the map display area displayed on the display unit after scrolling is included , and both the destination and the current vehicle location are displayed in the map display area after scrolling by the display determination means. If it is determined not to be included in, at the center of the map display area after the scroll and each of the destination and the present vehicle position A straight line connecting the scroll point that, the intersection calculating means for calculating each intersection of the edge of the map display area, to display a predetermined mark on both the intersection corresponding to the present vehicle position and the destination Display control means for controlling, and distance calculation means for calculating the distance from the destination and the current vehicle location with respect to the scroll point , the display control means according to the distance calculated by the distance calculation means The aspect of the predetermined mark displayed at the intersection calculated by the intersection calculation means is changed .

The invention of claim 6 grasps the invention of claim 1 from the viewpoint of a method, and includes an input unit that receives an operation from a user through a touch key or a hard key, and a detection unit that detects a destination and a current vehicle location. And a display unit for displaying a map, and a control unit having a computer, wherein the computer displays on the display unit based on a user input via the input unit A scroll step for scrolling the map displayed, and whether the destination and the vehicle current location detected by the detection unit are included in a map display area displayed on the display unit after scrolling through the scroll step. a display determination step of determining, the both of the vehicle current position and the destination by the display determining step after the scroll If it is determined not to be included in the drawing display area, the line that runs on the scroll point is a central part of the destination and each of the vehicle current position the map display area after the scroll, the display map an intersection calculating step of calculating an intersection between the edge of the area, respectively, and a display control step of controlling to display a predetermined mark on both the intersection corresponding to the present vehicle position and the destination, to the scroll point A distance calculating step of calculating a distance from the destination and the current vehicle location, and the display control step determines the intersection calculated in the intersection calculating step according to the distance calculated in the distance calculating step. The aspect of the predetermined mark to be displayed is changed .

The invention of claim 11 grasps the invention of claim 1 or claim 6 from the viewpoint of a computer program, and includes an input unit that receives an operation from a user through a touch key or a hard key, a destination, and a current vehicle location. In a control program for an in-vehicle information terminal comprising: a detection unit for detecting an image; a display unit for displaying a map; and a control unit having a computer. The program is input to the computer by the user via the input unit. Scroll processing for scrolling the map displayed on the display unit based on the above, and the destination and the vehicle current location detected by the detection unit are displayed on the display unit after scrolling through the scroll processing. a display determination process determines whether included in the map display area, the vehicle and the destination by the display determination process If both location is determined to not be included in the map display area after the scroll, the scroll point is a central part of the map display area after the scroll and the destination and each of the vehicle current location a straight line connecting the intersection point calculation processing for calculating respective intersection of the edge of the map display area, display control for controlling to display a predetermined mark on both the intersection corresponding to the present vehicle position and the destination And a distance calculation process for calculating a distance from the destination and the current vehicle position to the scroll point, and the display control process is performed according to the distance calculated in the distance calculation process. The aspect of the predetermined mark displayed at the intersection calculated by the intersection calculation processing is changed .

  In the above-described aspect, even when the map is scrolled, the positional relationship between the scroll point and the predetermined point such as the current location, the destination, the waypoint and the registered point, and the predetermined mark is the edge of the map display region. By being displayed on the unit, an in-vehicle information terminal that can be easily expressed can be provided. As a result, the user can intuitively grasp the positional relationship including the direction between the predetermined point and the scroll point by the location displayed at the edge of the map display area.

  In the above aspect, by setting both the destination and the current vehicle position as the current vehicle position as predetermined points, the positional relationship between the two and the scroll point can be easily grasped. When it is desired to designate as a waypoint, it is possible to set the optimum waypoint desired by the user based on the positional relationship from the destination after scrolling and the vehicle position.

  In the above aspect, since the distance from the predetermined point such as the destination to the scroll point can be calculated by providing the distance calculating means, the aspect of the predetermined mark to be displayed can be changed according to the distance. It is possible to transmit the positional relationship including the distance between the predetermined point and the scroll point in an easily visually recognizable manner. Therefore, for example, as described above, when the scroll point is used as a waypoint, the distance from the destination or the vehicle position can be intuitively grasped by a predetermined mark corresponding to the distance.

According to a second aspect of the invention, in-vehicle information terminal according to claim 1, aspects of the predetermined mark is characterized by different between when the predetermined point is the vehicle current position and the destination.

The invention of claim 7, be one obtained by grasping the invention of claim 2 in terms of methods, a control method for vehicle information terminal according to claim 6, aspects of the predetermined mark, the predetermined point is The destination is different from the case of the current vehicle location.

  In the above aspects, the shape, color, and other aspects of the predetermined mark to be displayed differ depending on whether the predetermined point is the destination and the vehicle position, so the position from the scroll point to the destination and the vehicle position. It becomes possible to make the user recognize the relationship more clearly.

According to a third aspect of the present invention, in the in-vehicle information terminal according to the first or second aspect, the aspect of the predetermined mark is a size or a color tone of the mark.

The invention of claim 8 grasps the invention of claim 3 from the viewpoint of the method, and in the control method of the in-vehicle information terminal according to claim 6 or 7 , the mode of the predetermined mark is the mark. It is characterized by having a size or color tone.

  In the above-described mode, when the mode of the predetermined mark is the size of the mark, for example, the mark is displayed smaller as the distance from the predetermined point to the scroll point increases, and the mark is displayed larger as the distance approaches. can do. Therefore, since the distance from the predetermined point can be expressed in a visually recognizable manner such as a difference in size, the user can sensuously determine the positional relationship between the scroll point and the predetermined point without gazing at the screen. It is possible to grasp. In addition, when the mode of the predetermined mark is a color tone, for example, from the viewpoint of the brightness of the color attached to the mark, the brightness of the color is increased as the distance from the predetermined point to the scroll point is increased, and as the distance is closer, The brightness of the color can be lowered. Therefore, as in the case where the size is changed to the predetermined mark, it is possible to allow the user to grasp the perspective relationship from the predetermined point in an easily recognizable manner called color tone.

According to a fourth aspect of the present invention, in the in-vehicle information terminal according to any one of the first to third aspects, the aspect of the predetermined mark is a blinking pitch of the mark.

The invention of claim 9 grasps the invention of claim 4 from the viewpoint of the method, and in the control method of the in-vehicle information terminal according to any one of claims 6 to 8 , The aspect is characterized by the blinking pitch of the mark.

  In the above-described mode, when the mode of the predetermined mark is the flashing pitch, for example, the flashing pitch of the mark is slowed as the distance from the predetermined point to the scrolling point increases, and the flashing pitch of the mark as the distance approaches Can speed up. Therefore, since the distance from the predetermined point can be expressed by the blinking pitch speed, the user can sensuously grasp the positional relationship between the scroll point and the predetermined point.

According to a fifth aspect of the present invention, in the in-vehicle information terminal according to any one of the first to fourth aspects, the display control unit displays the distance calculated by the distance calculation unit as numerical data on the display unit. It is characterized by doing.

The invention of claim 10 grasps the invention of claim 5 from the viewpoint of the method, and the display control step in the control method of the in-vehicle information terminal according to any one of claims 6-9. Is characterized in that the distance calculated in the distance calculating step is displayed as numerical data on the display unit.

  In the aspect as described above, the distance from the predetermined point calculated by the distance calculation unit to the scroll point can be displayed as numerical data, so that in addition to the change in the appearance of the predetermined mark according to the distance, a more precise position The display control is effective when it is desired to know the relationship.

  As described above, according to the present invention, even when the map is scrolled, a predetermined mark indicating the positional relationship between a plurality of predetermined points such as the current location, a destination, a waypoint, and a registered location and the scroll point is displayed. An in-vehicle information terminal, a control method thereof, and a control program that can be simply provided according to an aspect can be provided. That is, by displaying the mark at a position corresponding to the direction from the scroll point to the predetermined point in the edge of the map display area displayed on the screen, the user can intuitively set the predetermined point and the scroll point. The positional relationship including the direction can be grasped, and the display mode such as the size of the mark can be changed according to the distance between the predetermined point and the scroll point. It is possible to acquire the distance relationship.

  Next, the best mode for carrying out the present invention will be described with reference to FIGS.

[1. This embodiment]
[1.1. Constitution]
In the present embodiment, a navigation device that performs route guidance to a destination as an in-vehicle information terminal (hereinafter referred to as “the present device”) will be described, and it can be grasped as a control method and a control program. The configuration of the apparatus is shown in FIG. Note that this apparatus is also a concept that includes an in-vehicle information terminal that does not have a route guidance function.

  Reference numeral 1 denotes an FM multiplex reception and processing unit for acquiring VICS (Vehicle Information and Communication System) information as traffic information, and reference numeral 2 denotes a beacon reception and processing unit for acquiring VICS information.

  Reference numeral 3 denotes a main CPU (central processing unit) that controls the entire system and its peripheral circuits, and is a control unit that performs information processing including control of each part of the apparatus. 4 is a dynamic RAM (DRAM) for loading the main program, 5 is a static RAM (SRAM) with battery backup for holding memory contents such as settings even when the main power is turned off, and 6 is for starting up etc. The ROM is accessed from the control unit 3. Here, the main memory M includes a DRAM 4, an SRAM 5, and a ROM 6.

  Reference numeral 7 denotes a display unit for drawing and displaying information such as a map, and has a display screen such as a liquid crystal display panel. Reference numeral 8 denotes a video RAM (VRAM) provided for the display unit 7.

  Reference numeral 9 denotes an input unit that receives input of information and operations, and is a control device that detects input from touch keys and the like. In addition to the keys, a remote control unit, a touch sensor integrated with the display panel, or the like can be used alone or in combination.

  A user interface unit 10 connects the display unit 7 or the input unit 9 and the control unit 3 using an I / O control circuit, a driver, or the like. 11 is a TV reception and processing unit for receiving TV (various television broadcasts), and 12 is a vehicle information acquisition unit that detects operations and states such as illumination (lighting of instrument panels, etc.), vehicle speed pulses, and parking. It is. The vehicle information acquisition unit 12 contributes to the identification of the current position information of the own vehicle by detecting the vehicle speed from the vehicle speed pulse obtained from the vehicle.

  A storage device 13 is a storage unit that stores various databases using a drive such as an HDD, a DVD-ROM, or a CD-ROM. In addition to the storage unit 13 and the map database (typically, a route search database and a map display database), other search data and map related data are also recorded.

  As described above, this map database includes two types for route search and map display, and the route search database includes data (nodes and links) necessary for route search. The links in the route search database have a common ID as a map ID and a road link for map display, and are associated with each other. On the other hand, the map display database includes detailed road shape information (shape point sequence), area shape information, and the like for display.

  Reference numeral 14 denotes a positioning unit that obtains navigation information related to the behavior of the host vehicle such as the current position and direction using a positioning technique (for example, GPS, gyroscope, geomagnetic sensor, etc.). Here, the own vehicle position information is determined by the radio navigation information acquired using the GPS that is the positioning unit 14 and the independent navigation information acquired through the gyroscope. The information received from the FM multiplex reception and processing unit 1 can be adopted as the radio navigation information, and the information calculated based on the vehicle speed detected through the vehicle information acquisition unit 12 can be adopted as the independent navigation information. is there.

  Moreover, the control part 3 has the following processing means (31, 32 ... shown in FIG. 1) corresponding to the function and effect | action mentioned later. Here, the current position information of the own vehicle is sequentially calculated based on the information acquired from the vehicle information acquisition unit 12, the positioning unit 14, and the FM multiplex reception and processing unit 1, which is the same processing as the conventional navigation device. Means for detecting and receiving designation of a destination input by the user through the input unit 9 and calculating a route candidate from the vehicle position to the destination based on the designation is described as a navigation unit 31. The navigation unit 31 detects the current vehicle position even when route calculation is not performed, and also detects the destination when a destination is specified.

  Reference numeral 32 denotes a scroll unit that scrolls a map displayed on the display unit 7 by an operation from the touch key or the hard key as the input unit 9. That is, the map display area displayed on the screen which is the display unit 7 is moved based on the input from the user via the input unit 9. The scroll unit 32 also detects the presence or absence of scrolling through input from the user via the input unit 9 or movement of the map display area.

  Reference numeral 33 denotes a destination setting determination unit that determines whether the destination input from the user via the navigation unit 31 exists in the memory.

  A distance calculation unit 34 calculates the distance from the vehicle position or the destination detected by the navigation unit 31 with respect to the scroll point on the map scrolled through the scroll unit 32 by the operation of the input unit 9. Specifically, a cursor is displayed at the center of the screen, which is the display unit 7, and the cursor is moved based on an input from the user via the input unit 9 to scroll the map. Alternatively, the vehicle position detected by the navigation unit 31 and the distance from the destination are calculated with respect to the scroll point that is the cursor position during scrolling. If the destination is not set, the distance from the vehicle position to the scroll point is calculated.

  Reference numeral 35 denotes a host vehicle position / destination display determination unit, which is a map display area in which the host vehicle position and destination used as a reference when the distance calculation unit 34 calculates the distance to the scroll point are displayed on the display unit 9. It is determined whether it is inside. That is, after the map is scrolled via the scroll unit 32, it is determined whether the vehicle position or the destination exists in the map display area displayed on the display unit 9.

  36 is an intersection calculation unit, which is displayed when at least one of the vehicle position and the destination is not displayed in the map display area by the vehicle position / destination determination unit 35. The intersection point between the straight line connecting the non-existing point and the scroll point and the edge of the map display area displayed on the display unit 7 is calculated. Here, the edge of the map display area refers to the outer periphery of the map range displayed on the screen which is the display unit 7.

  In addition, for example, when both the vehicle position and the destination are scrolled and do not exist in the map display area, as shown in FIG. 3, the intersection calculation unit 36 displays the scroll point, the vehicle position, and the scroll. Intersection points between each straight line connecting the point and the destination and the outer periphery of the map range displayed on the screen, which is the edge of the map display area, are calculated.

  Reference numeral 37 denotes a display control unit that not only outputs the current vehicle position detected by the navigation unit 31 and the guidance route to the destination to the display unit 7 but also provides a predetermined point at the intersection calculated by the intersection calculation unit 36. Display the mark. In addition, this predetermined mark connects the intersection point between the straight line connecting the scroll point from the vehicle position and the edge of the map display area (hereinafter referred to as the intersection point corresponding to the vehicle position) and the scroll point from the destination. If the predetermined mark to be displayed is different at the intersection of the straight line and the edge (hereinafter referred to as the intersection corresponding to the destination), the shape is not particularly limited. A predetermined mark displayed at the intersection corresponding to the own vehicle position is referred to as a predetermined mark corresponding to the own vehicle position, and a predetermined mark displayed at the intersection corresponding to the destination is referred to as a predetermined mark corresponding to the destination.

  Further, the display control unit 37 performs control so that the shape of a predetermined mark displayed at this intersection is changed according to the vehicle position or the distance from the destination to the scroll point. For example, from the viewpoint of size as a change mode of the predetermined mark, as the own vehicle position moves away from the scroll point, the predetermined mark displayed at the intersection corresponding to the own vehicle position is reduced, or on the other hand, as the vehicle position approaches the scroll point Display control is performed to enlarge the mark displayed at the intersection corresponding to. The same applies to the case where the destination is away from or near the scroll point.

  In addition, from the viewpoint of the brightness of the color that is the color tone as the change mode of the predetermined mark, it is also possible to change the brightness of the mark according to the vehicle position or the distance from the destination to the scroll point. Specifically, as the vehicle position moves away from the scroll point, the color brightness of a predetermined mark displayed at the intersection corresponding to the vehicle position is decreased, or on the other hand, as the vehicle position approaches the scroll point, the color is displayed at the intersection corresponding to the vehicle position. Display control is performed to increase the color brightness of the mark. The same applies to the case where the destination is away from or near the scroll point.

  The display control unit 37 is not limited to the control mode described above, and the shape or color is changed to a desired mode according to the vehicle position or the distance from the destination to the scroll point, or the predetermined mark is displayed. A control mode for adjusting the blinking pitch is also included. When adjusting the blinking pitch of the predetermined mark, for example, display control is performed such that the blinking pitch of the mark is slowed as the distance from the predetermined point to the scroll point increases, and the blinking pitch of the mark is increased as the distance approaches.

[1.2. Action]
Next, the operation of the present embodiment based on the above configuration will be described with reference to the flowchart of FIG. 2 and the display screen examples of FIGS. First, as shown in FIG. 2, based on the information acquired from the vehicle information acquisition unit 12, the positioning unit 14, and the FM multiplex reception and processing unit 1, the current position information of the own vehicle that is sequentially calculated and detected through the navigation unit 31 is obtained. The vehicle position is output on the map data displayed on the display unit 7 through the reading and display control unit 37 (STEP 201).

  Then, the scroll unit 32 determines whether the map display area displayed on the screen which is the display unit 7 has moved, that is, whether the map has been scrolled based on the input from the user via the input unit 9 (STEP 202). ). When it is determined that the map is scrolled by the scroll unit 32 (YES), the destination setting determination unit 33 determines whether the destination input from the user via the navigation unit 31 exists in the memory. (STEP 203). If it is determined in STEP 202 that the map is not scrolled (NO), this process ends.

  In STEP 203, when the destination setting determination unit 33 determines that the destination input from the user via the navigation unit 31 exists in the memory (YES), the distance calculation unit 34 scrolls from the destination. The distance to the scroll point on the map is calculated (STEP 204).

  In STEP 203, when the destination setting determination unit 33 determines that the destination input from the user via the navigation unit 31 does not exist in the memory (NO), the distance calculation unit 34 passes through the navigation unit 31. The distance from the read vehicle position to the scroll point on the scrolled map is calculated (STEP 205). Even when the distance from the destination to the scroll point is calculated in STEP 204, the distance calculation unit 34 calculates the distance from the own vehicle position read through the navigation unit 31 to the scroll point on the scrolled map. (STEP 205).

  Then, the vehicle position / destination display determination unit 35 calculates the distance to the scroll point in STEP 204 and the destination that is a reference when the distance calculation unit 34 calculates the distance to the scroll point in STEP 204. It is determined whether or not each of the vehicle positions serving as a reference when the vehicle is present in the map display area displayed on the display unit 7 after scrolling (STEP 206).

  If the vehicle position / destination display determination unit 35 does not exist within the map display area displayed on the display unit 7 among the vehicle position and the destination that are used as a reference when calculating the distance to the scroll point For the determined point (NO), the intersection calculation unit 36 calculates the intersection between the straight line connecting the point and the scroll point and the edge of the map display area (STEP 207). Then, in STEP 206, the display control unit 37 sets a predetermined mark according to the calculated distance from the point determined not to be present in the map data among the vehicle position and the destination to the scroll point. Control is performed to display at the intersection calculated by (STEP 208).

  For example, the predetermined mark displayed at the intersection corresponding to the vehicle position decreases as the vehicle position moves away from the scroll point, or the mark displayed at the intersection corresponding to the vehicle position increases as the vehicle position approaches the scroll point. When such display control is performed, it is as shown in FIGS. 4 and 5, it is assumed that it is determined in STEP 206 that both the vehicle position and the destination are not present in the map display area displayed on the display unit 7.

  In FIGS. 4 and 5, the destination and the vehicle position are the same, and the shape of the predetermined mark corresponding to the destination and the vehicle position is a round mark corresponding to the destination. Corresponding marks are indicated by triangular marks. 4 and 5, a dotted line connecting the destination, the vehicle position, and the scroll point is shown, but it is not actually displayed on the screen.

  Here, FIG. 4 shows a display screen example when the distance from the destination to the scroll point is 3.2 km and the distance from the vehicle position to the scroll point is 4.7 km. On the other hand, in FIG. 5, the distance from the destination to the scroll point is 7.3 km, and the distance from the vehicle position to the scroll point is on the map scrolled to a point different from FIG. The example of a display screen when it is 3.0 km is shown.

  As is clear from both figures, the round mark indicating the predetermined mark corresponding to the destination has a distance of 7.3 km compared to FIG. 4 where the distance from the destination to the scroll point is 3.2 km. The display in FIG. 5 is controlled to be displayed in a smaller mode. On the other hand, the triangular mark indicating the predetermined mark corresponding to the vehicle position is shown in FIG. 5 where the distance from the destination to the scroll point is 4.7 km as compared to FIG. 4 where the distance is 3.0 km. It is controlled to display in a large manner.

  In STEP 206, if the vehicle position / destination display determination unit 35 exists within the map display area displayed on the display unit 7 among the vehicle position and the destination as a reference when calculating the distance to the scroll point. Regarding the determined point (YES), the intersection calculation unit 36 displays the intersection with the map display region edge as described above on the display unit 7 as usual (STEP 209).

  As described above, according to the present embodiment, even when the map is scrolled, the positional relationship between a plurality of predetermined points such as the current location, the destination, the waypoint, and the registered location and the scroll point is set to the predetermined mark. It is possible to provide an in-vehicle information terminal, a control method thereof, and a control program that can be easily provided by a display mode. That is, by displaying the mark at a position corresponding to the direction from the scroll point to the predetermined point in the edge of the map display area displayed on the screen, the user can intuitively set the predetermined point and the scroll point. The positional relationship including the direction can be grasped, and the display mode such as the size of the mark can be changed according to the distance between the predetermined point and the scroll point. It is possible to acquire the distance relationship.

[2. Other Embodiments]
In the above embodiment, the distance calculation unit 34 calculates the distance of the scroll point based on either the vehicle position or the destination, but the present invention is not limited to this, and the storage unit An embodiment in which the distance to the scroll point is calculated on the basis of a predetermined point such as a registered point previously stored in 13 is also included. For this reason, the positional relationship between the registration point desired by the user and the scroll point can be transmitted in an easily recognizable manner by using the predetermined mark, so that a wider range of information can be provided to the user.

  In addition, the present invention is not limited to the above embodiment in which the mode of the predetermined mark is changed according to the vehicle position or the distance from the destination to the scroll point, and the distance calculated by the distance calculation unit 34 is displayed as numerical data. Embodiments that display on the display unit 7 via the control unit 37 are also included. Specifically, as shown in FIG. 6, when it is determined that both the destination and the vehicle position do not exist in the scrolled map data, the display control unit 37 is calculated by the distance calculation unit 34. The distance from each of the destination and the vehicle position to the scroll point is expressed as numerical data (in FIG. 6, the distance from the destination to the scroll point is 3.2 km and the distance from the vehicle position to the scroll point is 4.7 km). Then, control is performed so as to display in correspondence with a predetermined mark displayed at the intersection calculated by the intersection calculation unit 36.

Functional block diagram showing a configuration of an embodiment of the present invention The flowchart which shows the effect | action of embodiment of this invention Example of display screen showing relationship between own vehicle position and destination and scroll point according to embodiment of present invention Display screen example (1) showing the display mode of the predetermined mark according to the embodiment of the present invention Display screen example (2) showing the display mode of the predetermined mark according to the embodiment of the present invention Display screen example (numerical data display example) according to another embodiment of the present invention Display screen example of scroll point according to the prior art

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... FM multiplex reception and processing part 2 ... Beacon reception and processing part 3 ... Guidance processing part (Main CPU and its peripheral circuit)
4. Dynamic RAM (DRAM)
5. Static RAM (SRAM)
6 ... ROM
7 ... Display 8 ... Video RAM (VRAM)
9. Input unit (touch key control device)
DESCRIPTION OF SYMBOLS 10 ... User interface part 11 ... TV reception and processing part 12 ... Vehicle information acquisition part 13 ... Memory | storage part 14 ... Positioning part 31 ... Navigation part 32 ... Scroll part 33 ... Destination setting determination part 34 ... Distance calculation part 35 ... Own vehicle Position / destination display determination unit 36 ... intersection calculation unit 37 ... display control unit M ... main memory

Claims (11)

In an in-vehicle information terminal including an input unit that receives an operation from a user through a touch key or a hard key, a detection unit that detects a destination and a vehicle current location , and a display unit that displays a map,
Scroll means for scrolling a map displayed on the display unit based on a user input via the input unit;
Display determination means for determining whether the destination and the current vehicle location detected by the detection section are included in a map display area displayed on the display section after scrolling via the scroll means;
When it is determined by the display determination means that both the destination and the vehicle current location are not included in the map display area after the scroll , each of the destination and the vehicle current location and the scrolled after the scroll a straight line connecting the scroll point is a central part of the map display area, and the intersection calculating means for calculating each intersection of the edge of the map display area,
Display control means for controlling to display a predetermined mark at both the destination and the intersection corresponding to the vehicle current location ;
A distance calculating means for calculating a distance from the destination and the vehicle current position with respect to the scroll point;
The in-vehicle information terminal characterized in that the display control means changes a mode of a predetermined mark displayed at the intersection calculated by the intersection calculation means according to the distance calculated by the distance calculation means . Aspects of the predetermined mark-vehicle information terminal according to claim 1, characterized in that the different between the destination and the present vehicle position. The in-vehicle information terminal according to claim 1 or 2 , wherein a mode of the predetermined mark is a size or a color tone of the mark. The in-vehicle information terminal according to any one of claims 1 to 3 , wherein an aspect of the predetermined mark is a blinking pitch of the mark. The in-vehicle information terminal according to any one of claims 1 to 4 , wherein the display control unit displays the distance calculated by the distance calculation unit as numerical data on the display unit. An in-vehicle information terminal comprising: an input unit that receives an operation from a user through a touch key or a hard key; a detection unit that detects a destination and a current vehicle location ; a display unit that displays a map; and a control unit that includes a computer. In the control method of
The computer
A scrolling step of scrolling a map displayed on the display unit based on a user input via the input unit;
A display determination step for determining whether the destination and the current vehicle location detected by the detection unit are included in a map display region displayed on the display unit after scrolling through the scroll step;
When it is determined by the display determination step that both the destination and the vehicle current location are not included in the map display area after the scroll , each of the destination, the vehicle current location, and the scrolled a straight line connecting the scroll point is a central part of the map display area, and the intersection calculating step of calculating each intersection of the edge of the map display area,
A display control step for controlling to display a predetermined mark at both the destination and the intersection corresponding to the vehicle current location ;
A distance calculating step for calculating a distance from the destination and the current vehicle location with respect to the scroll point; and
The display control step changes a mode of a predetermined mark displayed at the intersection calculated in the intersection calculation step according to the distance calculated in the distance calculation step . Aspects of the predetermined mark, a control method of the vehicle information terminal according to claim 6, characterized in that the different between the present vehicle position and the destination. The method for controlling an in-vehicle information terminal according to claim 6 or 7 , wherein the mode of the predetermined mark is a size or a color tone of the mark. The method for controlling an in-vehicle information terminal according to any one of claims 6 to 8 , wherein the mode of the predetermined mark is a blinking pitch of the mark. The method for controlling an in-vehicle information terminal according to any one of claims 6 to 9 , wherein the display control step displays the distance calculated in the distance calculation step on the display unit as numerical data. . An in-vehicle information terminal comprising: an input unit that receives an operation from a user through a touch key or a hard key; a detection unit that detects a destination and a current vehicle location ; a display unit that displays a map; and a control unit that includes a computer. In the control program of
This program is stored in the computer
A scroll process for scrolling a map displayed on the display unit based on a user input via the input unit;
A display determination process for determining whether the destination and the current vehicle location detected by the detection unit are included in a map display area displayed on the display unit after scrolling through the scroll process;
When it is determined by the display determination process that both the destination and the vehicle current location are not included in the map display area after the scroll , each of the destination, the vehicle current location, and the scrolled a straight line connecting the scroll point is a central part of the map display area, and the intersection calculation process of calculating respectively the intersection of the edge of the map display area,
Display control processing for controlling to display a predetermined mark at both the destination and the intersection corresponding to the vehicle current location ;
A distance calculation process for calculating a distance from the destination and the current vehicle location to the scroll point;
The control program for an in-vehicle information terminal, wherein the display control process changes a mode of a predetermined mark displayed at the intersection calculated by the intersection calculation process according to the distance calculated by the distance calculation process .

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