JP2005308877A - Onboard electronic system and scrolling control method for same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an onboard electronic system provided with a function notifying the boundary of a street map, and to provide a scrolling control method in the system. <P>SOLUTION: The scrolling control method of the street map in a navigation system includes a step of comparing a reference position on the street map displayed on a display with the boundary of the street map, and a step of notifying existence of the boundary of the street map, when a distance up to the boundary of the street map is a fixed value or smaller, on the basis of the comparison result, when scrolling the street map displayed on the display. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an in-vehicle electronic device having a navigation function for guiding a route to a destination, and more particularly to scrolling a city map.

  The navigation device detects the current position of the vehicle, reads map data around the vehicle position from the map database, draws the map on the display, and displays the vehicle mark on the map. When the current position changes due to the movement of the vehicle, the map scrolls and the vehicle mark moves accordingly.

  The map database includes map data of a plurality of scales including a city map. If the scale is wide, a map with a wide area is displayed on the display screen of the display. If the scale is narrow, the display area is small, but a detailed map can be displayed instead. The scale of the map is automatically switched in response to the speed of the vehicle, for example, or manually by the user according to the purpose.

  Among the narrow scales, there is a city map that can display the appearance of buildings, facilities, roads and the like in a form close to the real thing. The city map may include information such as address, building name, and telephone number. It is possible to prepare such a city map in all areas, but for the reason that the amount of data is enormous and that it is not always necessary in areas where buildings are not densely populated, the city map is an urban area. And are available in areas where buildings are densely populated.

  In Patent Document 1, while a vehicle is running, the presence or absence of a city map at that point is accurately determined to display or hide the city map. In FIG. 8A, the portion where the city map exists is indicated by hatching. However, if the city map is included even in a part of the sections constituting the map, as shown in FIG. This section is defined as having a city map. For this reason, when moving from point A to point C, although the section of point C is defined as having a city map, the city map cannot be displayed because the city map does not exist. There was a problem of displaying only the background screen. In order to solve this, polygon data surrounding the area where the city map of FIG. 8A exists is prepared, and it is determined whether or not the own vehicle position exists in the polygon. The presence / absence can be determined and displayed.

JP 2000-337894 A

  The navigation device is provided with a touch scroll function for scrolling a map by a user touching a display screen. When the touch scroll function is started, for example, as shown in FIG. 9, the arrows P <b> 1 to P <b> 8 in the eight directions with respect to the center position are displayed on the display. When the user touches any arrow P, the map screen is scrolled in that direction. When a city map including a detailed amount of information is displayed on the display, the map is scrolled to search for a desired building or facility by the touch scroll function.

  However, since the city map is not prepared in all areas as described above, when the city map is continuously scrolled by the touch scroll function, the city map may be crossed. Then, the display screen is suddenly switched from the city map to the wide area map having a larger scale. Even if scrolling back to the city map area again from that state, the map once switched to the wide area scale does not switch to the city map. For this reason, the user must again select the display of the city map and search for buildings and the like, and this operation is very complicated and time-consuming. On the other hand, recent navigation devices have a relatively high scrolling speed due to an improvement in image processing speed and the like, and it is difficult for the user to stop scrolling near the city boundary due to experience and feeling.

  Moreover, although the said patent document 1 is what makes discrimination | determination of the presence or absence of a city map more accurate, it does not solve the said conventional subject regarding the scroll of a city map, and does not suggest.

  The present invention solves the problems of the conventional navigation device described above, and provides a vehicle-mounted electronic device having a function of notifying a boundary of a city map when scrolling the city map displayed on the display, and a scroll control method in the device. The purpose is to provide.

  An in-vehicle electronic device according to the present invention includes a navigation function for guiding a route to a destination, a storage unit that stores map data of a plurality of scales including a city map, and a map read from the storage unit When scrolling the city map displayed on the display and the display means for displaying the data on the display, the reference position on the city map displayed on the display is compared with the boundary of the city map stored as map data. And a notification means for notifying that the boundary of the city map exists when the distance to the boundary of the city map becomes equal to or less than the first value.

  Furthermore, the map scroll control method in the in-vehicle electronic device having a navigation function for guiding the route to the destination according to the present invention is the city area displayed on the display when scrolling the city map displayed on the display. The step of comparing the distance between the reference position on the figure and the boundary of the city map, and if the distance to the boundary of the city map is below a certain value based on the comparison result, the boundary of the city map exists. And notifying.

  According to the present invention, when the city map displayed on the display is scrolled, the reference position on the display is compared with the boundary of the city map stored as the map data, and the distance to the boundary of the city map is the first. When the value is less than or equal to the value, the fact that there is a boundary of the city map is notified, so that the user can determine whether or not to continue scrolling with the notification. As a result, the user can stop the scrolling or perform a careful scrolling operation so as not to cross the boundary of the city map. Further, when the display is vibrated as a notification means, even if it is difficult for the passenger compartment to hear the voice guidance due to music or noise, the notification can be surely recognized by the user.

  The in-vehicle electronic device according to the present invention is preferably implemented in an in-vehicle navigation device. Hereinafter, it will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing an internal configuration of a navigation apparatus 1 according to an embodiment of the present invention. The GPS receiver 10 receives radio waves from an artificial satellite (GPS satellite) and measures the current position and current direction of the vehicle. The self-contained navigation sensor 12 detects a vehicle speed sensor that detects a moving distance of the vehicle and a rotation angle of the vehicle. The VICS / FM multiple receiver 16 sequentially receives current road traffic information outside the vehicle via the antenna 14. Operation panel 20, voice input unit 22, and remote control operation unit 24 constitute an input of navigation device 200. Operation panel 20 preferably includes a touch panel of display 52.

  The storage device 30 is preferably composed of a large capacity hard disk drive (HDD). The hard disk can store map data, data such as addresses, telephones, and facilities, and programs for executing various navigation functions. The map data includes map data of a plurality of scales ranging from a wide area scale to a narrow area scale. The wide area map includes stepped scales such as 250 km, 100 km, 10 km, 1 km, 500 m, and 100 m, and the narrow area map includes stepped scales such as 50 m, 25 m, and 12 m. The distance indicating the size of the scale means a distance that can be displayed on the display, and is synonymous with the scale.

  The wide area map covers almost all areas of prefectures throughout Japan. The narrow map covers a city area of a city, and has a city map of a plurality of scales. For example, as shown in FIG. 2, when represented by a map of A city, A city is composed of a plurality of map leaves A1 to A16. The scale of each map has a map that depends on the density of buildings and roads included in the map.

  Assuming that city A is represented by a city map scale of 12 m, 25 m, and a wide area scale of 100 m, map leaves A1, A2, A6, A7, A10, A11 are 12 m scale, 25 m scale city map and 100 m of city map scale. It can be expressed on a wide scale. The leaves A3, A5, A9, and A15 can be represented by a city map of 25 m scale and a wide area scale of 100 m. The leaves A4, A8, A12, A13, A14, and A16 can be expressed only by a wide scale of 100 m.

  12m scale and 25m scale city maps can be stored as different map data, but when 12m scale city maps are prepared and displayed at 25m scale, 12m scale city maps are digital image processed. However, the scale may be adjusted. Alternatively, a standard scale city map may be prepared, and image processing may be performed in accordance with a scale of 12 m or 25 m.

  The data communication control unit 32 enables data communication by radio or wire. The voice output unit 40 includes a speaker 42 and outputs, for example, voice such as intersection guidance when guiding a route. The display control unit 50 is connected to the display 52 and displays the map data read from the storage device 30 or the data memory 70 on the display 52. Further, a vehicle mark indicating the current position of the vehicle, a route to the destination, an intersection guidance display, a facility landmark, and the like are synthesized and displayed on the map. Furthermore, in the present embodiment, the display 52 functions as a touch panel, and when a user's contact is detected, the touch scroll function can be started.

  The program memory 60 stores various programs executed in the navigation device, and the control unit 80 operates according to these programs. The program memory 60 may store a program in advance or may load a program from the storage device 30. The program memory 60 includes, for example, a program 62 for searching for a route to the destination, a program 64 for performing various settings / changes such as a map displayed on the display 52, and further for controlling the scrolling of the city map. Stores the program 66 and the like.

  The data memory 70 includes processing results of various operations processed by the control unit 80, map data 72 read from the storage device 30, guidance route data 74 to the destination, and travel locus data 76 on which the vehicle has actually traveled. Remembered. Furthermore, when controlling the scrolling of the city map, the calculation data 78 and the like of the comparison result between the boundary of the city map and the reference position of the city map displayed on the display 52 are stored. The data memory 70 can be a DRAM, SRAM, flash memory or the like, and the contents of the data memory 70 may be transferred to the storage device 30. Further, an external memory that can be attached to the navigation device 1 may be used in combination with the data memory 70.

  Next, city map scroll control in the navigation device of this embodiment will be described with reference to the flowchart of FIG. In the present embodiment, an operation of scrolling the city map by the touch scroll function when the city map is displayed on the display 52 of the navigation device will be described.

  The control unit 80 detects the vehicle position based on the outputs of the GPS receiver 10 and the self-contained navigation sensor 12 (step S101), reads the map data corresponding to the vehicle position from the storage device 30, and stores this in the data memory. 70 is temporarily stored (step S102). For example, if the vehicle position is included in the leaf A7 shown in FIG. 2, map data of a plurality of leafs adjacent to the leaf A7 is read from the storage device 30.

  Next, the control unit 80 causes the display control unit 50 to display a city map corresponding to the vehicle position on the display 52 (step S103). As shown in FIG. 4, the map data included in each map leaf includes position information of longitude (X direction) and latitude (Y direction). When the vehicle position is coincident with the center C of the display screen S of the display, the city map D1 corresponding to the area determined from the positions of the corners C1, C2, C3, and C4 of the display screen based on the position of C is obtained. Drawn.

  Next, when the user touches the display 52 with a finger (step S104), the control unit 80 detects this and starts a touch scroll function (step S105). As described in the prior art, the touch scroll function displays, for example, eight directions of arrows P1 to P8 on the map screen of the display, and when the user touches the arrows with a finger, the map scrolls in that direction. Is done. Using this, a building or facility in a desired area is searched, or the searched facility or the like is set as a destination.

  When detecting that the user has touched any arrow, the control unit 80 scrolls the city map in that direction (step S106). For example, when the user touches the arrow P3 (see FIG. 4), the city map displayed on the display is continuously moved from the region D1 to D2.

  When the scrolling of the map is continued, the control unit 80 checks whether or not the boundary of the city map exists. Taking the city A in FIG. 2 as an example, the boundary of the 12 m scale city map is specified by a line or position surrounding the leaves A1, A2, A6, A7, A10, A11 as shown in FIG. When the city map D2 is displayed on the display and further scrolling to the arrow P3 is continued, the boundary 100 between the leaves A7 and A8 is approached. The control unit 80 obtains the reference point of the city map displayed on the display, for example, the position of the city map corresponding to the center C of the display and the distance L to the boundary 100 of the city map. The distance L is a difference up to the boundary 100 of the city map (step S107). When the distance or difference L becomes smaller than a certain value (step S108), the control unit 80 determines that there is a city map boundary and notifies the user of this (step S109).

  As shown in FIG. 6, the notification means preferably vibrates the display panel of the display so as to reliably notify the user who is touching the display for the scroll operation. This can be realized by arranging a piezoelectric element under the display panel of the display and driving the piezoelectric element. In particular, when listening to music in the passenger compartment or when there is noise, it may be difficult to listen to by voice guidance, but it can be reliably notified by vibration. Of course, as the notification means, notification may be made by voice output, or notification may be made by lighting a lamp or the like on the display, or a combination thereof.

  As described above, according to the present embodiment, before the city map is switched, it is notified that the boundary of the city map exists, so the user can perform a slow scroll while adjusting the touch operation, Or it becomes possible to stop scrolling in front of a city map.

  In the above embodiment, when scrolling from the leaf A7 to the leaf A8, that is, the boundary 100 between the 12 m scale city map and the 100 m scale wide area map is notified in advance. A3, that is, the boundary 102 between the 12 m scale city map and the 25 m scale city map may be notified in advance.

  Next, the operation of the second embodiment is shown in the flowchart of FIG. In the flowchart of FIG. 7, the process up to step S109 is the same as that of the first embodiment. In the second embodiment, after the advance notice of the boundary of the city map is made, the scrolling speed is delayed (step S210). Then, it is further checked whether or not the difference L is smaller than the second value (step S211). When the difference L is smaller than the second value, notification of the existence of the boundary of the city map is performed again (step). In step S212, the scroll speed is further delayed (step S213). In this case, the first value to be compared in step S108 must be set larger than the second value to be compared in step S211.

  According to the second embodiment, by performing multiple prior notifications of the boundary of the city map in multiple stages, the user can know that the boundary is approached each time the notification count increases. it can. At the same time, by reducing the scrolling speed, the user can easily and carefully search for a building or the like on the city map, and can avoid inadvertently crossing the boundary of the city map.

  Furthermore, the scroll speed delay may be finally stopped. In other words, when the display exceeds the boundary of the city map, the scrolling of the city map may be stopped so that the city map does not switch to another scale. With the city map scrolling stopped, the user will be prompted to select whether or not to continue scrolling, and only when the user wants to continue will the city map scroll resume and other scales You may make it switch to.

  The preferred embodiments of the present invention have been described in detail, but the present invention is not limited to such specific embodiments, and various modifications and changes can be made within the scope of the gist of the present invention described in the claims. It can be changed. In the said Example, although the 12m scale city map was illustrated, city maps other than this may be sufficient. Moreover, although the scroll control when a user performs a touch scroll function was shown in the said Example, scroll operations other than this may be sufficient. For example, when the map screen is scrolled according to the vehicle position, the presence of the boundary of the city map may be notified.

  Furthermore, the definition of the city map is not interpreted in a limited manner, but includes a narrow scale including detailed map information. Furthermore, the magnitude of the difference or distance L, the number of notifications, the scroll speed delay amount, and the like can be appropriately changed by design.

  The vehicle-mounted electronic device provided with the navigation function according to the present invention can be used in a navigation device, a navigation system, or an electronic device such as a computer including these functions. Further, the electronic device can be used in a multimedia-compatible electronic device having an audio function, a TV broadcast receiving function, etc. in addition to a navigation function, or an electronic system composed of a plurality of electronic devices having such a function. it can.

It is a block diagram which shows the structure of the navigation apparatus which concerns on the Example of this invention. It is a figure explaining the structural example of a city map. It is a flowchart explaining the operation | movement of the scroll control of the city map in the navigation apparatus which concerns on a present Example. It is a figure which shows the relationship between the display screen of a display, and a city map. It is a figure which shows the boundary of the city map of 12m scale shown in FIG. It is a figure which shows the example which notifies the boundary of a city map with a vibration. It is a flowchart explaining the operation | movement of the scroll control of 2nd Example. It is a figure explaining discrimination | determination of the presence or absence of the conventional city map. It is a figure explaining a touch scroll function.

Explanation of symbols

1: Navigation device 10: GPS receiver 20: Operation panel 30: Storage device 31: Communication control unit 40: Audio output unit 50: Display control unit 51: Display 60: Program memory 70: Data memory 100, 102: Street map boundary

Claims (8)

An in-vehicle electronic device equipped with a navigation function for guiding a route to a destination,
Storage means for storing map data of a plurality of scales including a city map;
Display means for displaying the map data read from the storage means on the display;
When scrolling a city map displayed on the display, the reference position on the city map displayed on the display is compared with the boundary between the city map stored as map data and the boundary of the city map from the reference position is compared. A notification means for notifying that there is a boundary of the city map when the distance to is less than or equal to the first value;
An in-vehicle electronic device having The in-vehicle electronic device according to claim 1, further comprising a scroll control unit that delays a scroll speed to a first speed when the notification by the notification unit is performed. The scroll control means further sets the scroll speed to a second speed smaller than the first speed when the distance to the boundary of the city map becomes a second value smaller than the first value. The in-vehicle electronic device according to claim 2. The in-vehicle electronic device according to any one of claims 1 to 3, wherein the scroll control means stops the scrolling of the city map before the city map is switched to a map of another scale. The in-vehicle electronic device includes a detection unit that detects contact with the display, a touch scroll unit that enables scrolling of the map when the contact is detected by the detection unit, and a vibration unit that vibrates the display. The in-vehicle electronic device according to any one of claims 1 to 4, wherein when the notification means notifies the presence of a boundary of a city map, the vibration means vibrates the display. A map scroll control method in an in-vehicle electronic device having a navigation function for guiding a route to a destination,
When scrolling the city map displayed on the display, comparing the reference position on the city map displayed on the display and the distance to the boundary of the city map stored as map data;
Notifying that the boundary of the city map exists when the distance to the boundary of the city map is less than a certain value based on the comparison result;
A scroll control method comprising: The scroll control method according to claim 8, further comprising a step of reducing the scroll speed while performing the notification. The scroll control method according to claim 7, further comprising a step of stopping scrolling of the city map before the city map is switched to a map of another scale.

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