WO2007111116A1

WO2007111116A1 - On-vehicle navigation device and map display method

Info

Publication number: WO2007111116A1
Application number: PCT/JP2007/054844
Authority: WO
Inventors: Takashi Hanyuda; Takayuki Uchida; Keigo Nakada
Original assignee: Pioneer Corporation
Priority date: 2006-03-24
Filing date: 2007-03-12
Publication date: 2007-10-04
Also published as: JPWO2007111116A1; JP4376295B2

Abstract

A necessary logo mark can be displayed in an on-vehicle navigation device in accordance with a vehicle travel condition so that a user can easily view the logo mark. The navigation device displays a map of a display area including the vehicle current position on a display device and displays a logo mark of a facility existing in the display area. The logo mark display is controlled in accordance with the vehicle travel condition. For example, the type of logo marks to be displayed is decided in accordance with the facility use frequency, the type of the road where the vehicle is traveling, the vehicle travel speed, and the like. Accordingly, it is possible to display an appropriate logo mark in accordance with the vehicle travel condition so that the user can easily view the logo mark.

Description

Specification

In-vehicle navigation device and map display method

Technical field

The present invention relates to a technique for displaying a map and a facility logo mark on a display device.

Background art

In general, a car navigation device displays map data in a predetermined range on a display device with the current position of the vehicle as the center. Also, a navigation device is known that displays various facilities such as public facilities and gas stations in the displayed map area as logo marks (see, for example, Patent Document 1). In addition, a navigation device is also known in which facilities are classified by genre, and the user can select a facility to be displayed on a map.

[0003] In the above navigation device, when the user sets to display facilities of many genres, when the vehicle travels in an area where there are many facilities such as a large city, it is displayed on the display device. The problem is that the map is covered with a lot of logo marks and the important roads are not visible.

[0004] Patent Document 1: Japanese Patent Laid-Open No. 11-351888

Disclosure of the invention

Problems to be solved by the invention

[0005] The above is given as an example of problems to be solved by the present invention. The purpose of the present invention is to make it easy to see the necessary logo mark according to the driving conditions of the vehicle in the in-vehicle navigation system.

[0006] In a preferred embodiment of the present invention, the in-vehicle navigation device includes map display means for displaying a map of a display area including a current position of the vehicle, and a logo mark of a facility existing in the display area. Logo mark display means for displaying, and the logo mark display means controls the display of the logo mark based on the running condition of the vehicle.

[0007] The above navigation device displays a map of a display area including the current position of the vehicle on a display device and the like, and displays a logo mark of a facility existing in the display area. The A logo mark is a mark that indicates a facility, and usually represents the type and characteristics of the facility in characters or graphics. Here, the display of the logo mark is controlled according to the driving conditions of the vehicle. Therefore, an appropriate logo mark is displayed in an easy-to-see state based on the driving conditions of the vehicle.

[0008] In one aspect of the in-vehicle navigation device, the logo mark display means determines the type of logo mark to be displayed according to the speed of the vehicle. In this aspect, the logo mark displayed changes according to the speed of the vehicle. For example, when the vehicle speed is relatively low, many types of logo marks are displayed, and when the vehicle speed is relatively high, only the necessary types of logo marks are displayed. Make it easier to see.

[0009] In another aspect of the in-vehicle navigation device, the logo mark display means determines a type of logo mark to be displayed according to a type of road on which the vehicle is traveling. In this aspect, the logo mark displayed changes according to the type of road on which the vehicle is traveling. For example, on the expressway, only the logo mark of the facility accessible from the expressway is displayed.

[0010] In another aspect of the in-vehicle navigation device, the logo mark display means is

Whether or not to display a logo mark corresponding to the facility is determined according to the frequency of the vehicle visiting the facility. In this aspect, the displayed mouth mark changes according to the frequency of use by the user. For example, a logo mark of a facility that is frequently used is displayed with priority over a logo mark of a facility that is not frequently used. As a result, the user can easily find facilities that are frequently used every day.

[0011] In another aspect of the in-vehicle navigation device, the logo mark display means is

The logo mark of the facility that is within a predetermined range from the current position of the vehicle and within a predetermined distance from the road on which the vehicle is traveling is not displayed. In this mode, the logo mark near the road on which the vehicle is traveling is not displayed because it will not be visible if it is displayed over the road. This ensures visibility of roads that are inherently important.

[0012] In another aspect of the above-described in-vehicle navigation device, the logo mark display means includes

, Within a predetermined range from the current position of the vehicle and outside a predetermined distance from the intersection, Do not display the logo mark of facilities that exist within a specified distance from the road on which the vehicle is traveling. In this mode, the logo mark in the vicinity of the road on which the vehicle is traveling will not be displayed in principle because it will not be visible if it is displayed over the road. This ensures the visibility of roads that are inherently important. However, the logo mark near the intersection is often used as a mark such as a left or right turn by the user.

[0013] In another aspect of the above-described in-vehicle navigation device, the logo mark display means switches the logo marks at predetermined time intervals when the display positions of the logo marks overlap. indicate. As a result, even if the logo mark overlaps, it can be displayed easily.

[0014] In another embodiment of the present invention, the map display method executed in the in-vehicle navigation device includes a map display step of displaying a map of a display area including a current position of the vehicle, and exists in the display area. A logo mark display process for displaying a logo mark of a facility to be controlled, and the logo mark display process controls the display of the logo mark based on the running conditions of the vehicle. According to this map display method, an appropriate logo mark is displayed in a state that is easy to see based on the driving conditions of the vehicle.

[0015] In another embodiment of the present invention, a map display program executed in an in-vehicle navigation device including a computer includes a map display unit that displays a map of a display area including a current position of a vehicle, and The computer is caused to function as a logo mark display means for displaying a logo mark of a facility existing in the display area, and the logo mark display means controls display of the logo mark based on the running conditions of the vehicle. By executing this program in the in-vehicle navigation system, an appropriate logo mark is displayed in an easy-to-see state based on the driving conditions of the vehicle. This program can be suitably handled in a state stored in a storage medium.

Brief Description of Drawings

FIG. 1 is a block diagram showing a schematic configuration of a navigation device.

[Fig.2] An example of the configuration of the display type table by frequency of use is shown schematically.

[Figure 3] Shows examples of display type table header and usage frequency record.

[Fig. 4] A configuration example of the display classification table by road class is schematically shown. [Figure 5] Shows examples of display type table header, display type record, and display type code table.

[FIG. 6] A configuration example of a display classification table classified by speed band is schematically shown.

[Figure 7] Shows examples of display type table header, display type record, and display type code table.

FIG. 8 is a flowchart of basic display processing.

FIG. 9 is a flowchart of an example of logo mark display processing.

[Fig.10] —Example of display while driving on general roads and highways.

[Fig. 11] This is a display example when the logo mark overlaps.

[Fig. 12] This is a display example when the logo mark near the running road is deleted.

Explanation of symbols

[0017] 1 Navigation device

10 Independent positioning device

18 GPS receiver

20 System controller

22 CPU

36 Data storage unit

40 display unit

60 input devices

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. The following description shows an example in which the present invention is applied to a vehicle navigation apparatus.

[0019] (Navigation device)

FIG. 1 shows the configuration of the navigation device 1. As shown in Figure 1, the navigation device

1 is self-supporting positioning device 10, GPS receiver 18, system controller 20, disk drive 3

1. A data storage unit 36, a communication interface 37, a communication device 38, a display unit 40, an audio output unit 50, and an input device 60 are provided.

[0020] The self-supporting positioning apparatus 10 includes an acceleration sensor 11, an angular velocity sensor 12, and a distance sensor 13. The The acceleration sensor 11 is made of, for example, a piezoelectric element, detects the acceleration of the vehicle, and outputs acceleration data. The angular velocity sensor 12 is composed of, for example, a vibrating gyroscope, detects the angular velocity of the vehicle when the direction of the vehicle is changed, and outputs angular velocity data and relative azimuth data. The distance sensor 13 measures a vehicle speed pulse consisting of a pulse signal generated with the rotation of the vehicle wheel.

[0021] The GPS receiver 18 receives radio waves 19 carrying downlink data including positioning data from a plurality of GPS satellites. The positioning data is used to detect the absolute position of the vehicle from the latitude and longitude information.

The system controller 20 controls the navigation device 1 as a whole by an interface 21, a CPU (Central Processing Unit) 22, and the like.

[0023] The interface 21 performs an interface operation with the acceleration sensor 11, the angular velocity sensor 12, the distance sensor 13 and the GPS receiver 18. From these, vehicle speed pulses, acceleration data, relative bearing data, angular velocity data, GPS positioning data, absolute bearing data, and the like are input to the system controller 20. The CPU 22 controls the entire system controller 20. The ROM 23 includes a nonvolatile memory (not shown) in which a control program for controlling the system controller 20 is stored. The RAM 24 stores various data such as route data set in advance by the user via the input device 60 so as to be readable, and provides a working area to the CPU 22.

[0024] The system controller 20, the disk drive 31 such as a CD-ROM drive or DVD-ROM drive, the data storage unit 36, the communication interface 37, the display unit 40, the audio output unit 50, and the input device 60 are the bus line 30. Are connected to each other via

The disc drive 31 reads and outputs content data such as music data and video data from a disc 33 such as a CD or DVD under the control of the system controller 20. The disk drive 31 may be either a CD-ROM drive or a DVD-ROM drive, or may be a CD and DVD compatible drive. [0026] The data storage unit 36 is configured by, for example, an HDD and stores various data used for navigation processing such as map data and facility data. Details of the map data will be described later.

[0027] The communication device 38 includes, for example, an FM tuner, a beacon receiver, a mobile phone, a dedicated communication card, and the like, and is distributed from a VICS (Vehicle Information Communication System) center via the communication interface 37. Receive road traffic information such as traffic jams and traffic information, and other information.

[0028] The display unit 40 displays various display data on a display device such as a display under the control of the system controller 20. Specifically, the system controller 20 reads map data from the data storage unit 36. The display unit 40 displays the map data read from the data storage unit 36 by the system controller 20 on a display screen such as a display. The display unit 40 includes a graphic controller 41 that controls the entire display unit 40 based on control data sent from the CPU 22 via the bus line 30 and image information that can be displayed immediately, such as a VRAM (Video RAM). A buffer memory 42 that temporarily stores, a display controller 43 that controls display of a display 44 such as a liquid crystal display or a CRT (Cathode Ray Tube) based on image data output from the graphic controller 41, and a display 44 Prepare. The display 44 is composed of, for example, a liquid crystal display device having a diagonal angle of about 5 to 10 inches and is mounted near the front panel in the vehicle.

[0029] The audio output unit 50 is a D / A of digital audio data sent via the bus line 30 under the control of the system controller 20 under the control of the CD—ROM drive 31 or DVD—R0M32 or RAM24. D / A converter 51 that performs digital to analog conversion, amplifier (AMP) 52 that amplifies the audio analog signal output from Ό / Α converter 51, and the amplified audio analog signal is converted into audio and converted into the vehicle interior. And a speaker 53 that outputs to

[0030] The input device 60 includes keys, switches, buttons, a remote controller, a voice input device, and the like for inputting various commands and data. The input device 60 is arranged around the front panel and the display 44 of the main body of the in-vehicle electronic system mounted in the vehicle. If the display 44 is a touch panel system, the display 44 The touch panel provided on the display screen also functions as the input device 60.

[0031] [Logo display]

Next, the logo mark display according to the present embodiment will be described. In the present embodiment, the type of logo mark displayed on the map displayed on the display 44 is controlled in accordance with the traveling condition of the vehicle equipped with the navigation device 1. Vehicle driving conditions include the frequency of use of facilities corresponding to the logo mark (hereinafter referred to as “usage frequency”), the type of road on which the vehicle is driven (hereinafter referred to as “road class”), And the running speed of a vehicle is mentioned.

The system controller 20 shown in FIG. 1 determines the type of facility logo mark to be displayed on the map in accordance with the traveling conditions of these vehicles. Therefore, the data storage unit 36 is prepared in advance with a display type table that defines the type of logo mark to be displayed for each driving condition of these vehicles. Specifically, a display classification table by use frequency, a display classification table by road class, and a display classification table by speed band are prepared. The “type” is the type of facility corresponding to the logo mark, Giannole, etc. The various logo marks that can be displayed by the navigation device 1 are classified by type.

[0033] (Frequency of use)

First, the logo mark display control according to the usage frequency will be described. The system controller 20 stores the frequency of use of the facility corresponding to the logo mark for each type of the facility, and determines the type of the logo mark of the facility to be displayed on the map based on the use frequency. . FIG. 2 schematically shows a configuration example of the display classification table 110 by use frequency. As illustrated, the display type table 110 by use frequency includes a display type table header 111 and a plurality of use frequency records 112.

FIG. 3A shows the contents of the display type table header 111. As shown in the figure, the display type table header 111 includes management information of the display type table 110 by use frequency as a whole. Specifically, the “use frequency type definition number”, “use frequency record number”, “ Includes "Usage frequency record size" and "Offset to the beginning of usage frequency record".

The “number of use frequency type definitions” is the number of facility types defined in the display type table 110 by use frequency. The “number of usage frequency records” is the number of usage frequency records included in the display classification table 110 by usage frequency, and is N in the example of FIG. “Frequency Record “Size” indicates the data size of each usage frequency record 112. The “offset to the beginning of usage frequency record” is information indicating the storage location of the first usage frequency record (that is, usage frequency record # 1) among the plurality of usage frequency records 112. That is, the usage frequency record # 1 is stored in the storage area of the display type table 110 by usage frequency from the storage location next to the offset value.

FIG. 3B shows the contents of the usage frequency record 112. Each usage frequency record 112 is data indicating the usage frequency aggregated for each type of facility, and includes “type code” and “number of times of use”. The “type code” is a code indicating the type of facility corresponding to the logo mark. “Number of uses” indicates the number of times the user has used the facility of the type indicated by the type code, that is, the number of times the vehicle has visited. Thus, each usage frequency record 112 stores how frequently the user has used the corresponding type of facility.

[0037] Thus, the display classification table 110 by use frequency stores the frequency of use of each facility by the user. Therefore, the system controller 20 maps only the logo mark of the facility belonging to the type with high use frequency (specifically, the use frequency is a predetermined number or more) by referring to the display type tape type 110 according to use frequency. When it is displayed above, it is possible to control when. As a result, it is possible to appropriately display logo marks of facilities that are frequently used, that is, facilities that are useful to present to the user. For example, it can be controlled so that the convenience store logo mark is preferentially displayed for users who frequently use convenience stores.

[0038] (Road class)

Next, the logo mark display control according to the road class will be described. The system controller 20 determines the type of logo mark of the facility to be displayed on the map for each classification (called “road class”) according to the type and type of road on which the vehicle is traveling. FIG. 4 schematically shows a configuration example of the display classification table 120 by road class. As shown in the figure, the road class display type table 120 includes a display type table header 121, a plurality of display type records 122, and a display type code table 123.

FIG. 5 (a) shows the contents of the display type table header 121. As shown in the figure, the display type table header 121 includes management information for the display type table 120 by road class as a whole. Specifically, it includes “number of road class definitions”, “number of road class records”, “road class record size”, and “offset to the top of road class record”.

The “number of road class definitions” is the number of road classes defined in the road class display type table 120. The road class can be, for example, an expressway, a toll road, a national road, or a prefectural road. The “number of road class records” is the number of display type records 122 included in the display class table 120 by road class, and is N in the example of FIG.

“Road class record size” indicates the data size of each display type record 122 included in the display type table 120 by road class. “Offset to top of road class record” is information indicating the storage position of the top display type record (that is, display type record # 1) among the plurality of display type records 122. That is, the display type record # 1 is stored from the storage position next to the offset value in the storage area of the display type table by road class 120.

FIG. 5 (b) shows the contents of the display type record 122. Each display type record 122 includes “road class code”, “number of display type codes”, “size of display type code table”, and “offset of display type code table”. The “road class code” indicates a road class to which the display type record is applied, for example, a road class such as an expressway or a national road. “Number of display type codes” indicates the number of type codes of facilities to be displayed when a vehicle is traveling on a road of the road class. The “display type code table size” is the data size of the display type code table corresponding to the display type record 122. “Display type code table offset” is information indicating the storage position of the display type code table 123 corresponding to the display type record 122. That is, the corresponding display type code table 123 is stored from the storage position next to the offset value in the storage area of the display type table 120 by road class.

FIG. 5C shows the contents of the display type code table 123. Each display type code tape 123 includes a plurality of display type codes. The plurality of display type codes stipulate the display type codes of the facilities that are displayed as logo marks when the vehicle is traveling on a road class road specified in the corresponding display type record 122.

[0044] For example, the road type code of display type record # 1 indicates a highway, and the table It is assumed that display type codes indicating parking lots, gas stations, and toilets are defined as display type codes in display type code table # 1 corresponding to display type record # 1. In this case, the navigation device 1 is used when the vehicle is traveling on a highway.

[0045] In this way, by determining the facility to be displayed according to the road class of the road on which the vehicle is traveling, the logo mark of the facility required while traveling on the road is displayed with priority. In addition, the logo mark of the less important facility can be made easier to see by not displaying the logo mark of the less important facility.

[0046] It should be noted that the user can arbitrarily set the contents of the above-described road class display type table 120, that is, what kind of logo mark is displayed on various roads. In this case, the contents of the display class table classified by road class are changed according to the user's setting change.

[0047] (Speed band)

Next, logo mark display control according to the speed band will be described. The system controller 20 classifies the traveling speed of the vehicle into a plurality of ranges (hereinafter, each classified range is referred to as a “speed band”), and the facility to be displayed on the map for each speed band. Determine the type of logo. The speed band is defined with a predetermined width such as “0 to 20 km / h”, “21 to 60 km / h”, “61 to 100 km / h”, “101 km / h or more”, and the like.

FIG. 6 schematically shows a configuration example of the display classification table 130 for each speed band. As shown in the figure, the display classification table by speed band 130 includes a display classification table header 131, a plurality of display classification records 132, and a display classification code table 133.

FIG. 7A shows the contents of the display type table header 131. As shown in the figure, the display type table header 131 includes management information for the entire display type table 130 for each speed band. Specifically, “number of speed band definitions”, “number of speed band records”, “speed band record number” "Bandwidth record size" and "Offset to velocity band record head".

The “number of speed bands defined” is the number of speed bands defined in the speed band display type table 130, and is “4” in the above classification example. The “number of speed band records” is the number of display type records 132 included in the display type table 130 by speed band. In the example of FIG. Is N.

“Speed band record size” indicates the data size of each display type record 132 included in the display type table 130 for each speed band. “Offset to the top of the speed band record” is information indicating the storage position of the first display type record (that is, display type record # 1) among the plurality of display type records 132. That is, in the storage area of the display type table 130 for each speed band, the display type record # 1 is stored from the storage position next to this offset value.

FIG. 7 (b) shows the contents of the display type record 132. Each display type record 132 includes “speed lower limit”, “speed upper limit”, “number of display type codes”, “size of display type code table”, and “offset of display type code table”. “Speed lower limit” and “Speed upper limit” specify the speed band to which the display type record is applied. For example, in the case of a speed band of “0-20km / h”, the lower speed limit is “0km” and the upper speed limit is “20km”. “Number of display type codes” indicates the number of facility type codes to be displayed when the vehicle is traveling at the speed of the speed band. The “display type code table size” is the data size of the display type code table 133 corresponding to the display type record 132. “Display type code table offset” is information indicating the storage location of the display type code table 133 corresponding to the display type record 132. That is, the corresponding display type code table 133 is stored from the storage position next to the offset value in the storage area of the display type table for each speed band.

FIG. 7C shows the contents of the display type code table 133. Each display type code tape No. 133 includes a plurality of display type codes. The plurality of display type codes stipulate the facility display type codes that are displayed as mouth marks when the vehicle is traveling at a speed in the speed band specified in the corresponding display type record 132.

[0054] For example, the speed band power of display type record # 1 is 21 to 60 km / h, and a convenience store and a gas station are displayed as display type codes in display type code table # 1 corresponding to display type record # 1. It is assumed that the display type code to be shown is specified. In this case, the navigation device 1 displays the convenience store and gas station logo marks when the vehicle is traveling at a speed of 21 to 60 km / h. [0055] Thus, by determining the facility to be displayed according to the traveling speed of the vehicle, the logo mark of the necessary facility is preferentially displayed while traveling at that speed, and the importance level is also displayed. It is possible to make it easier to see the logo marks of facilities with high importance by not displaying the logo marks of facilities with low priority.

[0056] It should be noted that the content of the above-described display classification table by speed band 130, that is, what kind of logo mark is displayed in each speed band, can be arbitrarily set by the user. In that case, the contents of the display classification table classified by speed band are changed according to the user's setting change.

[0057] (Basic display processing)

Next, a basic display process for determining a logo mark to be displayed on the map according to the use frequency, the road class, and the speed band will be described. Figure 8 shows the basic display process flow chart. This process is realized by the CPU 22 in the system controller 20 executing a prepared program. In addition, this flowchart is executed in a state where a map near the current position of the vehicle is already displayed on the display 44.

First, the CPU 22 checks the prepared logo mark data (step Sl). The data of the logo mark corresponding to each facility is stored in advance in the data storage unit 36 in a state classified for each type (genre) of the corresponding facility. For example, the CPU 22 obtains display type codes corresponding to all logo marks stored in the data storage unit 36, and determines all logo marks that are prepared and displayable.

Next, the CPU 22 detects the current traveling speed of the vehicle, refers to the display classification table for each speed band, and acquires the display classification to be displayed at the traveling speed (step S2). Next, the CPU 22 checks the road class of the road on which the vehicle is currently traveling, refers to the display class table for each road class, and acquires the display type to be displayed while traveling on the road (step S3). Further, the CPU 22 refers to the display type table classified by use frequency, and acquires a high use frequency and display type (step S4).

[0060] Then, the CPU 22 extracts only the display types acquired in steps S2 to S4 from all the display types checked in step S1 (step S5), and the logo mark of the extracted display type is extracted. Is acquired from the data storage unit 36 and displayed on the display 44 displayed on the display 44 (step S6). Thus, the appropriate facility logo mark is displayed on the map according to the frequency of use, road class and speed band.

[0061] (Logo mark display processing example)

Next, a preferred logo mark display processing example for determining the logo mark to be displayed on the map according to the road class and the speed band will be described. Figure 9 shows a flowchart of the logo mark display processing example. This logo mark display process is realized by executing a program prepared in advance by the system controller 20, particularly the CPU 22. This logo mark display process starts when the map near the current position of the vehicle is already displayed on the display 44.

[0062] First, the system controller 20 determines whether or not the vehicle is traveling (step Sl l). The system controller 20 determines whether or not the vehicle is traveling based on the vehicle speed pulse output from the distance sensor 13 and / or the change in the current position of the vehicle detected by the GPS 19. When the vehicle is not running (Step Sl l; No), the system controller 20 displays all types of logo marks prepared in advance (Step S24) and ends the process. In step S24, if the navigation device 1 is set not to display all logo marks, the logo marks are not displayed. In addition, only the logo mark of the type set as the display target is displayed when it is set to display only a specific type of logo mark by user selection etc. Is done.

On the other hand, when the vehicle is traveling (step Sl l; Yes), the system controller 20 determines that the vehicle is traveling based on the current position of the vehicle and the road data stored in the data storage unit 36. The existing road is searched and its road class is determined (step S12). If the determined road class is a highway (step S13; Yes), the system controller 20 accesses the logo mark data stored in the data storage unit 36 and is in the vicinity of the running road. Extract the facility logo and its position coordinates (Step S14) ₀

[0064] Next, the system controller 20 displays a plurality of extracted logo marks, It is determined whether or not they overlap each other on the display 44 (step SI 5). When the logo mark does not overlap (Step S15; No), the system controller 20 displays only the logo mark of the facility on the expressway among the extracted logo marks (Step S16). In step S16, it is possible to display only the logo mark of the facility ahead of the direction of travel from the current position of the vehicle. If the current position passes the position of the logo mark, the logo mark may be deleted. Good.

[0065] Fig. 10 (a) shows an example of logo mark display when the vehicle is traveling on a general road, and Fig. 10 (b) is an example of logo mark display when the vehicle is traveling on a highway. Indicates. In the display example 140a shown in FIG. 10 (a), the power vehicle whose expressway 149 is displayed on the map is traveling on the general road, and the current position mark 141 of the vehicle is on the general road. In this case, parking lots, toilets, gas stations, convenience stores, and family restaurants are defined as types to be displayed. In the example 140a, the parking lot logo mark 142, the toilet logo mark 143, and gasoline The stand logo mark 144, the convenience store logo mark 145 and the family restaurant logo mark 146 are displayed.

On the other hand, when only the expressway facility is displayed in step S 16, a display example 140 b during traveling on the expressway shown in FIG. 10B is displayed. Here, assuming that only parking lots, toilets, and gas stations are defined as types to be displayed during highway driving, the display example 140b during highway driving includes a parking lot logo mark 142, Toilet logo mark 143 and gas station logo mark 144 are displayed. However, as can be seen from comparison with Fig. 10 (a), the convenience store logo mark 145 and the family restaurant logo mark 146 are not displayed.

Returning to FIG. 9, when a plurality of logo marks are overlapped (step S 15; Yes), the system controller 20 switches and displays the overlapping logo marks at predetermined time intervals (step S 17). Figure 11 shows a display example when multiple logo marks overlap. When the logo mark overlaps, the system controller 20 alternately displays the image 140c shown in FIG. 11 (a) and the image 140d shown in FIG. 11 (b) at predetermined time intervals. In the example of Figure 11, the parking lot logo 147 and the toilet logo 148 overlap. In image 140c, the toilet logo mark 148 indicated by the solid line is displayed, and the parking lot logo mark indicated by the broken line is displayed. 147 is not displayed. On the other hand, in the image 140d, a parking lot logo mark 147 indicated by a solid line is displayed, and a toilet logo mark 148 indicated by a broken line is not displayed. In this example, it is assumed that the logo mark indicated by the broken line is not displayed. Instead, the logo mark indicated by the solid line is displayed on the logo mark indicated by the broken line, as shown in FIG. The vertical relationship of the display may be changed.

Next, when it is determined in step S13 that the road on which the vehicle is traveling is not a highway, the system controller 20 detects the speed of the vehicle (step S18). The speed of the vehicle (also referred to as “vehicle speed”) can also be determined based on the vehicle speed pulse output from the distance sensor 13 and the change in the current position of the vehicle detected by Z or GPS19.

[0069] When the detected vehicle speed is equal to or lower than the predetermined speed (step S19), the system controller 20 displays all types of prepared logo marks (step S24) and ends the process.

[0070] On the other hand, when the vehicle speed exceeds the predetermined speed (step S19; Yes), the system controller 20 displays the logo mark of the facility located within a predetermined distance from the road within the predetermined range from the current position of the vehicle and its position coordinates. Extract (step S20). The predetermined range and the predetermined distance are determined according to the scale of the currently displayed map, the display range, and the like. Next, the system controller 20 determines whether or not the current position of the vehicle is near the intersection, specifically, whether or not the vehicle is within a predetermined distance from the intersection (step S21).

[0071] If the current position is not in the vicinity of the intersection (step S21; No), the system controller 20 does not display (or deletes) the logo mark extracted in step S20 on the screen (step S22). Notify the user by voice and / or message display (step S23). For example, the notification is made by outputting a voice or displaying a message such as “Landmarks near the road”. In this case, the vehicle is traveling at a relatively high speed, and if the logo mark is displayed near the road on which the vehicle is traveling, the road becomes difficult to see.

On the other hand, when the current position is near the intersection (step S21; Yes), the system controller 20 displays all types of prepared logo marks (step S24). The reason for this is that the logo mark may be used as a mark for turning left and right near the intersection, and if deleted, it may interfere with the operation of the user. FIG. 12 shows a display example in which no logo mark is displayed in step S22. In display example 1 50, as indicated by the vehicle current position mark 154, the vehicle is traveling on the road 151. Of the logo marks that exist near the road 151 that is running, the logo mark 1 52 that is not near the intersection (dotted line) Is not displayed, but the logo mark 153 (shown by a solid line) near the intersection is displayed.

[0074] As shown in FIG. 12, while the logo mark is not displayed, the system controller 20 displays the display button 155 on the display screen 150, and when the user presses the display button 155, the display button 155 It is also possible to display the logo mark 152 that has not been displayed.

[0075] [Modification]

In the above example, in order to prevent the road on the map display screen from becoming difficult to see due to the logo mark, the logo mark that exists near the current position of the vehicle is extracted in step S20, and it is not near the intersection. The logo mark is not displayed (step S22). Instead, based on the number of logo marks extracted in step S20, it is determined whether the logo marks are densely gathered near the current position of the vehicle. Only in such a case, the logo mark may be hidden except near the intersection as in step S22, and the logo mark may be displayed outside the intersection when not crowded. This is because if the logo marks are not dense, it is unlikely that the road will be difficult to see even if they are displayed. Whether or not logo marks are dense can be determined based on, for example, the range of logo marks extracted in step S20, that is, the number and density of logo marks in a predetermined range from the current position. . For example, when the number of logo marks existing per unit area exceeds a predetermined number, it can be judged that the logo marks are dense.

[0076] Further, in step S22, the logo mark present near the road on which the vehicle is traveling is not displayed except near the intersection. Instead, it may be determined whether or not the logo mark extracted in step S20 overlaps the road when it is displayed on the display, and only the logo mark existing at the position overlapping the road may be hidden. This also prevents the road from becoming invisible due to the logo mark on the map displayed on the display. [0077] Further, in the logo mark display processing example shown in FIG. 9, the process of alternately switching and displaying the overlapping logo marks (step S17) is executed only while the vehicle is traveling on the expressway. However, the same processing may be executed while driving on a road other than the expressway.

[0078] In the above embodiment, the type of logo mark to be displayed is controlled according to the use frequency, road class, and speed band, but the logo mark to be displayed according to other driving conditions. Can be changed. Industrial applicability

[0079] The present invention can be used in a navigation apparatus for a moving body represented by a vehicle or the like.

Claims

The scope of the claims

[1] Map display means for displaying a map of the display area including the current position of the vehicle;

A logo mark display means for displaying a logo mark of a facility existing in the display area, and

The in-vehicle navigation device characterized in that the logo mark display means controls the display of the logo mark based on the running condition of the vehicle.

[2] The in-vehicle navigation device according to claim 1, wherein the logo mark display means determines the type of logo mark to be displayed according to the speed of the vehicle.

[3] The in-vehicle navigation system according to claim 1, wherein the logo mark display means determines a type of logo mark to be displayed according to a type of road on which the vehicle is traveling. Yong equipment.

[4] The logo mark display means determines whether or not to display a logo mark corresponding to the facility according to the frequency of the vehicle visiting the facility. The in-vehicle navigation device described.

[5] The logo mark display means does not display a logo mark of a facility that is within a predetermined range from the current position of the vehicle and within a predetermined distance from the road on which the vehicle is traveling. The in-vehicle navigation device according to claim 1.

[6] The logo mark display means displays a logo mark of a facility existing within a predetermined range from the current position of the vehicle and outside a predetermined distance from an intersection, and within a predetermined distance from the road on which the vehicle is traveling. The in-vehicle navigation device according to claim 1, wherein the navigation device is not displayed.

[7] The logo mark display means, when the display positions of a plurality of logo marks overlap, display the plurality of logo marks by switching at a predetermined time interval. The in-vehicle navigation device described in 1.

[8] A map display method executed in an in-vehicle navigation device,

A map display step for displaying a map of a display area including the current position of the vehicle, and a logo mark display step for displaying a logo mark of a facility existing in the display area. The map display method, wherein the logo mark display step controls display of a logo mark based on a running condition of the vehicle.

[9] A map display program executed in an in-vehicle navigation device equipped with a computer,

The computer functions as a map display means for displaying a map of a display area including the current position of the vehicle, and a logo mark display means for displaying a logo mark of a facility existing in the display area,

The map display program characterized in that the logo mark display means controls the display of the logo mark based on the running condition of the vehicle.

[10] A recording medium in which the map display program according to claim 9 is recorded.