JP2006003286A - On-vehicle navigation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle navigation device capable of displaying intelligibly a road to be retrieved when performing road retrieval. <P>SOLUTION: This navigation device 1 has a display 52, a storage device 30 for storing a map database or an address database on a map, a road, a land mark or the like, and an address retrieval means 66 for retrieving an address from the map database when the address to be retrieved is inputted and displaying the retrieved map on the display. When the address to be retrieved is a road, the address retrieval means 66 retrieves a land mark existing along the address from the storage device, and displays the land mark together when the retrieved road 102 is highlighted. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a navigation device having a function of searching for a route to a destination and guiding the searched route, and in particular, a display method when a road (street) search is performed during address search, and the destination is a road. It relates to a guidance method at a certain time.

  The navigation device detects the current position of the host vehicle, reads map data around the host vehicle location from the map database, draws the map data 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.

  A typical function of the navigation device is a function of searching for a route to a destination and guiding the route to the destination along with the movement of the host vehicle. To make it easier to set destinations, you can search for facilities and buildings by phone number and address, search for entertainment facilities and leisure facilities by genre, etc., or move the cursor on the map screen of the display to locate the point. A search function is provided. Further, the destination is not limited to one place, and it is possible to set a stop-by place on the way.

  When performing route guidance to a destination, if too much information is displayed on the map, it may be difficult to accurately extract and recognize necessary information from the information. In view of these problems, Patent Document 1 controls the display mode of the mark information displayed on the map according to the vehicle speed. For example, display / non-display of the mark information is controlled, specific mark information is highlighted, or the search range of the mark information is controlled. This makes it possible to display necessary information in an easy-to-understand manner according to the traveling state, and to accurately recognize the information.

  In addition, when moving the cursor on the map screen of the display to set the desired point as the destination (passing point), it is possible to search for the road closest to the set point and set this as the destination. is there. However, if the roads are dense, the destination may not always be set at a point desired by the user. In order to solve such a problem, Patent Document 2 makes it possible to search for a road in an arbitrary range on a map when setting a destination, and simultaneously display the name of the road and the road type. It also makes it possible.

JP 2002-39780 A JP 2002-107166 A

  However, the conventional navigation device has the following problems. When searching for an address in the navigation device, if the map database is under development or the map has not been updated, an address including the end of the number and address may be searched, or this may be used as the destination. Cannot be set. Especially in countries such as China, Europe and America, because the land and population are enormous, the amount of data is enormous, and the address allocation specifications differ from country to country. It takes a lot of time and money.

  When detailed address data up to the end is not included in the map database, a road (street) search that is one level higher than that is performed, and a map screen of a certain area including the searched road is displayed. It is displayed. FIG. 7 shows a display example when searching for an address of “Sichuan Chengdu City Wusong Street” cannot be performed in the Chinese map database, but the official address “Sichuan Chengdu City Wusheng Street 231” cannot be searched. It is. On the display 200, a map centering on the representative point is displayed, and landmarks A and B selected by the user setting are displayed, but other roads are also displayed at the same time. In some cases, it may not be possible to easily recognize whether the road is a searched road.

  Further, when a road search is performed and this is set as the destination, as shown in FIG. 8, the representative point of the searched road is set as the destination, and the guide route 202 to that point is displayed. The guide route 202 to the destination is displayed while being distinguished from other roads, but this guide route 202 includes other roads other than the searched roads. For this reason, the user may not be able to easily recognize which road is the searched road. When the user is traveling while searching for a destination along a road when guiding a guidance route, the user may pass the road and search for a destination on a different road.

  Therefore, the present invention provides an in-vehicle electronic device having a navigation function that solves the above-described conventional problems and can display a searched road in an easy-to-understand manner when performing a road search in a map database. Objective.

  The vehicle-mounted electronic device according to the present invention has a navigation function for searching for a route to a destination and guiding the searched route, and storing means for storing data relating to a display, a map, a road, a landmark, and the like And an address search means for searching the address from the storage means and displaying the searched map on the display when the address to be searched is input. When the address to be searched is a road, the address search means further searches the storage means for landmarks existing along the road, highlights the searched road on the display, and Display only the landmarks.

  Preferably, the address retrieval unit retrieves the road name of the road to be retrieved from the storage unit, and displays the road name on the display. The storage means may include an address database, and the address search means may search for the nearest road to the address when the address to be searched is not included in the address database.

  The on-vehicle electronic device according to the present invention has a navigation function for searching for a route to a destination and guiding the searched route, and further stores data relating to a display, a map, a road, a landmark, and the like. Storage means and route guidance means for highlighting the road on the display based on data stored in the storage means when the destination is a road and displaying only landmarks present along the road.

  Furthermore, the address search method in the in-vehicle electronic device according to the present invention includes data relating to a map, a road, a landmark, and the like in a storage device, and includes the following steps. When the address to be searched is a road, a step of searching the road from the storage device, and a step of highlighting the searched road on the display and displaying only landmarks existing along the road Have.

  Furthermore, the destination guidance method in the in-vehicle electronic device according to the present invention includes data relating to a map, a road, a landmark, and the like in a storage device, and includes the following steps. A step of searching for a route to the destination road, a step of displaying the route searched based on data stored in the storage device and guiding the searched route, and when the vehicle position approaches the destination And highlighting the destination road on the display and displaying only the landmarks present along the road.

  According to the present invention, when searching for a road as an address to be searched, the displayed road is highlighted on the display, and only landmarks existing along the road are displayed. The user can easily recognize a road searched at a glance, and can recognize or infer an address to be originally searched using landmarks along the road as a landmark. Also, during guidance when the destination is a road, the highlighted road can be readily recognized at a glance, and the destination address can be estimated using the landmark display as a landmark. Therefore, even if the map database is not yet developed, the convenience for the user can be improved as compared with the conventional navigation device.

  Details of the vehicle-mounted navigation device of this embodiment will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing an internal configuration of the navigation apparatus 1. In the figure, a 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. The operation panel 20 includes a touch panel of the display 52, for example.

  The storage device 30 is preferably composed of a large capacity hard disk drive (HDD). The hard disk stores a program and a database for executing various navigation functions. The database includes a map database and an address database. The map database includes link data related to roads, intersection data, and terrain data related to buildings and facilities. The link is a road connecting the intersection and the intersection, and the link data includes node data indicating the coordinates of the start point and the end point, and type data indicating the type of road (national road, general road, prefectural road, etc.). Furthermore, road name data for displaying road names in association with link data is included. The road name data includes, for example, a national road ○ No. for a national road, a prefectural road No. ○ for a prefectural road, and an A city-B city road that connects specific municipalities. Is associated with the link data. The address included in the address database has data common to the address included in the map database. The address database can be used when the user inputs an address via the operation panel.

  The data communication control unit 32 enables data communication by radio or wire. The communication function may be built in the navigation device, or may externally connect a communication terminal such as a mobile phone. The navigation device is connected to the server 100 via a data communication control unit 32 and a network such as the Internet or a LAN.

  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. In addition, a vehicle mark indicating the current position of the vehicle, a route to the destination, a guidance display of an intersection, or a landmark such as a facility is displayed on the map.

  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 guiding the searched route, a program 66 for searching for an address, and a type of landmark to be displayed. Program 68 and the like.

  The data memory 70 displays the processing results of various operations processed by the control unit 80, the map data 72 read from the storage device 30, the guidance route data 74 to the destination, and the road names when displaying the searched roads. Data 76 and the like are temporarily 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, an address search operation in the navigation device according to the present embodiment will be described with reference to the flowchart of FIG. When the navigation device is activated and, for example, the drive plan 100 is selected from the menu screen as shown in FIG. 3 (step S101), a screen for registering the destination is displayed on the display.

  Here, when the user selects an address, the control unit 80 refers to the address database stored in the storage device 30, and displays a list screen on the display 52 (step S102). The user narrows down addresses from the list screen (step S103). The list screen is used for input from the upper layer to the lower layer. In the example of FIG. 3, the state level is selected on the first list screen, and then the city, county is selected in the selected prefecture. Select the level and narrow down the desired address.

  For example, if the address is “Shengchuan Chengdu Street 231”, select “Sichuan” on the first list screen, narrow down “Chengdu” from the next list screen, Narrow down "Kaimachi". Here, when the address database is not maintained, it is not possible to set up to the next address. For this reason, for example, an item called a representative point is displayed on the display. On the other hand, if the address database has been prepared up to the last address, that address is selected. As described above, the addresses included in the address database and the addresses searchable in the map database are common, in other words, addresses not included in the address database cannot be searched in the map database. .

  When the representative point item is selected, the control unit 80 searches for the nearest road (step S104). Hereinafter, this road is referred to as a search road. When performing the road search, the control unit 80 searches for road name data corresponding to the road from the map database and searches for all landmarks existing along the road (step S105). In this case, even if the user has set to hide a specific landmark, all the landmarks are read regardless.

  Next, the control unit 80 highlights the search road on the map read from the storage device 30, displays the road name in a balloon, and displays only all landmarks existing along the road ( Step S106). Highlighting the search road makes it easy to distinguish it from other roads. As a highlighting mode, for example, a search road is highlighted, or a broken line is displayed so that other road colors and route guidance colors on the map can be distinguished.

  FIG. 4A is a display example when a search for “Sichuan Chengdu City Wusheng Street” is performed. As shown in the figure, the search road 102 is highlighted with a broken line, the name “Waiyai Street” is displayed in a balloon, and only the landmarks present on the street are displayed. The landmark includes all facilities such as landmarks, buildings, etc., and includes, for example, a restaurant, a convenience store, a public facility, a shrine, a temple, an entertainment facility, and the like.

  It should be noted here that in the display example of the conventional address search (see FIG. 7), the landmarks A and B are displayed, and the other landmarks C, D, E, and F are not displayed. This is because only the user preferences are displayed according to the user settings. On the other hand, in FIG. 4, all the landmarks C, D, E, and F that are hidden by the user setting are displayed along the search road 102. On the other hand, the landmarks A and B along the road other than the search road 102 are not displayed even if the display setting is set.

  In addition to displaying the search road, the control unit 80 displays a cursor 104 for enabling more detailed setting of a spot (see FIG. 4B). The cursor 104 is positioned at an appropriate position on the search road 102, for example, approximately at the center of the search road. The user can set a point closer to the destination by operating the cursor using the landmarks present along the highlighted search road as a guide. For example, when the user recognizes the destination as “next to A restaurant in Wuqi Avenue”, the landmark of A Renstran is used as a landmark, and the destination is set on the search road by a cursor operation. When the cursor is operated (step S107), the search position is corrected (step S108).

  On the other hand, when the road search is not performed, in other words, when the address data up to the final address is prepared (step S104), the address corresponding to the final address is searched (step S109), and the address is included. A map is displayed on the display (step S110). At this time, the cursor 104 is shown to match the retrieved address. The user can also operate the cursor to set a point different from the original address.

  The point finally set by the cursor operation can be used as a destination or a registered point. Furthermore, it can also be used to search for facilities around the set point or to search for nearby parking lots.

  In the above embodiment, when the address setting is input, the list screen is narrowed down. However, in addition to this, the address may be directly input by a key operation. If it is determined that there is no final address corresponding to the address database when “Sichuan Chengdu Wuyi Street 231” is keyed, the control unit 80 automatically searches for the nearest road. be able to.

  Next, the guidance operation when the destination is set by road search as described above will be described with reference to the flowchart of FIG.

  Based on the output signals of the GPS receiver 10 and the self-contained navigation sensor 12, the control unit 80 detects the vehicle position (step S201). Next, the optimum route from the vehicle position to the set destination is searched (step S202). The optimum route is selected from criteria such as the shortest distance, the shortest time, and the minimum cost.

  As the vehicle position travels, the corresponding map data is read from the storage device 30, and the read map is scroll-displayed on the display 52 (step S203). The control unit 80 detects whether or not the own vehicle position has approached the destination (step S204). For example, it is determined whether or not the distance to the destination has reached 1 km. When approaching within 1 km, the control unit 80 highlights the search road 102 on the display 52, displays the road name by a balloon, and displays all landmarks existing along the search road. (Step S205). As in the address search, the highlighting can be expressed by changing the contrast so that the guide route to the destination and the road color can be understood, or by using a broken line. Regardless of user settings, all landmarks along the search road are displayed and all landmarks other than the search road are deleted. Such display is continued until the destination is reached (step S206).

  FIG. 6 is an example of a guidance display when “Sichuan Chengdu Wuyi Street” is the destination. As shown in the figure, the search road 102 is highlighted with a broken line, and “Wuyai Street” is displayed as the road name. In addition, all landmarks along the road are displayed.

  By providing such a guidance display, the user can recognize the search road 102 at a glance and accurately search for an actual destination using landmarks along the search road as a guide.

  The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific embodiments, and various modifications can be made within the scope of the gist of the present invention described in the claims. Deformation / change is possible.

  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 a computer device including these functions. In addition to the navigation function, the electronic device is used in a multimedia-compatible electronic device having an audio function, a TV broadcast receiving function, or the like, or an electronic system including a plurality of electronic devices having such a function. Can do.

It is a block diagram which shows the structure of the navigation apparatus which concerns on the Example of this invention. It is a flowchart explaining the address search operation | movement in the navigation apparatus concerning a present Example. It is a display example explaining the setting input method of an address. FIG. 4A shows a display example when a road search according to the present embodiment is performed, and FIG. 4B shows an example when a cursor is displayed. It is a flowchart explaining the guidance operation | movement of the destination in the navigation apparatus concerning a present Example. It is an example of a display when the destination is a road. It is an example of a display at the time of the conventional road search. It is an example of guidance display to the road of the conventional destination.

Explanation of symbols

1: Navigation device 10: GPS receiver 20: Operation panel 30: Storage device 32: Communication control unit 40: Audio output unit 50: Display control unit 52: Display 60: Program memory 70: Data memory 102: Search road 104: Cursor

Claims (10)

A vehicle-mounted electronic device having a navigation function for searching a route to a destination and guiding the searched route,
Display,
Storage means for storing data relating to maps, roads, landmarks, etc .;
When the address to be searched is input, the address is searched from the storage means, and the searched map is displayed on the display.
When the address to be searched is a road, the address search means searches the storage means for landmarks existing along the road, highlights the searched road on the display, and displays the land along the road. An in-vehicle electronic device that displays only the mark. The in-vehicle electronic device according to claim 1, wherein the address search means searches the storage means for a road name of a road to be searched and displays the road name on a display. The in-vehicle electronic device according to claim 1, wherein the storage means includes an address database, and the address search means searches for the nearest road to the address when the address to be searched is not included in the address database. A vehicle-mounted electronic device having a navigation function for searching a route to a destination and guiding the searched route,
Display,
Storage means for storing data relating to maps, roads, landmarks, etc .;
When the destination is a road, based on the data stored in the storage means, the route guidance means for highlighting the road on the display and displaying only the landmarks present along the road;
An in-vehicle electronic device having The in-vehicle electronic device apparatus according to claim 4, wherein the route guidance means displays a road name corresponding to the destination road. The in-vehicle electronic device according to claim 4, wherein the route guidance unit performs highlighting of the road and display of a landmark when the vehicle position reaches a certain distance before the destination. An address retrieval method in an in-vehicle navigation device provided with data related to maps, roads, landmarks, etc. in a storage device,
When the address to be searched is a road, a step of searching the storage device from the storage device;
Highlighting the searched road on the display and displaying only the landmarks present along the road. The address searching method according to claim 7, wherein the searching step searches the map data for a road name corresponding to the road, and the displaying step displays the road name together on the display. A destination guidance method in a vehicle-mounted navigation device equipped with data related to maps, roads, landmarks, etc. in a storage device,
Searching for a route to the destination road;
Displaying a route searched for based on data stored in a storage device on a display and guiding the searched route;
A destination guidance method including a step of highlighting the road of the destination on the display and displaying only the landmarks existing along the road when the vehicle position approaches the destination. The destination guidance method according to claim 9, wherein the displaying step displays the road name of the destination road together.

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