JPH09292260A - Guide device by structure form map and record medium for guide device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate appropriate guide and confirmation of the present position by setting a range according to vehicle speed in the advancing direction from the present position, searching for mark information and mark information on the circumference of a guide crossing point, and displaying land marks as marks. SOLUTION: The present position is recognized and it is judged whether the distance up to a guide crossing point is within a fixed value or not. In case of within the fixed value, facilities on the circumference of the guide crossing point are searched, objects capable of being displayed as marks are obtained from the searched facilities, and the marks are drawn on the searched positions. For example, when facilities such as a gas station GS, a post office, a school, are there, the marks consisting of various patterns (land marks) such as service marks or characters are displayed. Hereby without changing to the drawing of the crossing point, the crossing point or the route can be plainly guided even by the structure form map as it is.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide device based on a building shape map for displaying a building shape map and guiding a road, and a recording medium for the guide device.

[0002]

2. Description of the Related Art In a navigation apparatus, a route search to a destination is performed based on a point input such as a departure point and a destination, and a screen and voice are used based on the searched guide route. There is a method of displaying a map around the current position and displaying a current position mark on the map as a guide screen for performing route guidance by using the route guide.

[0003] However, when trying to select a road to be driven by recognizing information ahead of the road that is being driven based on the displayed map, if too much information is displayed on the map, Necessary information is also buried in them, and there is a problem that it is difficult to accurately recognize the necessary information and determine a road to travel. In particular, at a guidance intersection, since the traveling direction must be accurately determined, an easy-to-understand intersection guide map is required.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is intended to facilitate appropriate guidance at a guidance intersection and confirmation of a current position.

[0005] For this purpose, the present invention provides a guide device based on a building shape map for guiding a road by displaying a building shape map in which a house shape or a road is drawn, and searches for landmark information around a specific point. It is characterized by displaying a landmark on the building shape map, setting a range according to the vehicle speed in the traveling direction from the current position, a predetermined angle in the traveling direction, landmark information in the range of the distance, It is characterized by retrieving landmark information around a guidance intersection and displaying landmarks as landmarks.

Further, in a guide device using a building shape map for guiding a road by displaying a building shape map on which a house shape or a road is drawn, a building on which a house shape or a road recorded on a recording medium is drawn. A storage medium reading means for reading a program and data for displaying a shape map and performing road guidance; a non-volatile recording means for storing a program; and a non-volatile storage means for storing the program read by the recording medium reading means. Means for reading a program to be read into the recording means, display means for displaying the building shape map, and execution of the program read by the means for reading the program, based on the data recorded on the recording medium through the recording medium reading means. Processing means for displaying a building shape map on the display means and guiding the road,
It is characterized by retrieving landmark information around the current position and displaying the landmark on the building shape map.

[0007] As a guidance device (navigation device) for calculating a route to an input destination and providing guidance by display or voice as the current position moves, storage means for storing house shape information including landmark information. And search means for searching for landmark information from the storage means according to predetermined conditions, and display control means for processing and displaying and outputting house shape information stored in the storage means, wherein the display control means comprises: Further, the display information of the mark information searched by the search means is controlled.

[0008] Further, a current position detecting means for detecting a current position, a storage means for storing house shape information and landmark information including landmark information, and landmark information around the current position detected by the current position detecting means are stored in the memory. Search means for searching from storage means; display means for displaying information around the current position based on the current position detected by the current position detection means and guidance information stored in the storage means; and Display control means for controlling display information to be displayed; furthermore, a route calculating means for calculating a route to the destination; and landmark information along the route calculated by the route calculating means are retrieved from the storage means. Search means. The display control means controls the display of the mark information searched by the search means, and the current position detection means has a vehicle speed detection means for detecting a vehicle speed, and the display control means Controls display information to be displayed on the display means based on the detected vehicle speed,
The search means searches only the mark information of the guide point on the route calculated by the route calculation means.

[0009] As a recording medium for a guide device using a building shape map for guiding a road by displaying a building shape map in which a house shape or a road is drawn, information on the shape of each building, facility, and other various buildings is used. And building shape map data having information pertaining to the building, and drawing and displaying the shape and name of each building based on the building shape map data, and at the vicinity of a specific point on the building shape map. A program for retrieving the mark information and displaying the mark is recorded.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing an embodiment of a guidance device using a building shape map according to the present invention as a navigation device, and an input / output device 1 for inputting / outputting information relating to route guidance, information relating to a current position of a vehicle. A current position detecting device 2 for detecting a route, an information storage device 3 in which navigation data necessary for calculating a route and display guidance data necessary for guidance are stored, and a display guidance process required for route search processing and route guidance. It comprises a central processing unit 4 for performing the control of the whole system.
First, each configuration will be described.

The input / output device 1 instructs the central processing unit 4 to perform navigation processing according to the driver's intention so that the driver can input the destination or output the guidance information by voice and / or screen when the driver needs it. In addition, it has a function of printing out the processed data. As means for realizing the function, the input unit includes a touch switch 11 and an operation switch for inputting a destination as a telephone number or coordinates on a map, and for requesting route guidance. Of course, an input device such as a remote controller may be used. In the output unit, the input data is displayed on the screen, and the route guidance is automatically displayed on the screen in response to the driver's request. The display 12 stores the data processed by the central processing unit 4 and the information storage device 3. And a speaker 16 for outputting route guidance by voice.

Here, a voice recognition device for enabling voice input and a recording card reading device for reading data recorded on an IC card or a magnetic card can be added. In addition, an information center that stores data necessary for navigation and is provided via a communication line at the request of the driver, an electronic notebook that stores driver-specific data such as map data and destination data in advance, etc. A data communication device for exchanging data with another information source can also be added.

The display 12 is composed of a color CRT or a color liquid crystal display, and is necessary for navigation such as a route setting screen based on map data or guidance data processed by the central processing unit 4, a section map screen, an intersection map screen, etc. All screens are displayed in color, and on this screen, buttons for setting route guidance, guidance during route guidance, and switching screens are displayed. In particular, the passing intersection information such as the passing intersection name is displayed in color in a pop-up on the section map screen at any time.

The display 12 is provided in the instrument panel near the driver's seat, and the driver can confirm the current position of the vehicle by looking at the section map and obtain information on the route from now on. You can The display 12 is provided with a touch switch 11 corresponding to the display of the function button, and is configured to execute the above-described operation based on a signal input by touching the button. The input signal generating means including the button and the touch switch constitutes an input unit, but a detailed description thereof is omitted here.

The current position detecting device 2 includes a GPS receiving device 21 and a beacon receiving device 22 using a satellite navigation system (GPS), for example, a cellular phone (automobile telephone) or F
A data transmitting / receiving device 23 for receiving a GPS correction signal using an M multiplex signal, an absolute direction sensor 24 including a geomagnetic sensor, a relative direction sensor 25 including a wheel sensor, a steering sensor, a gyro, and the like, rotation of a wheel. A distance sensor 26 for detecting the traveling distance from the number is provided.

The information storage device 3 is an external storage device that stores a navigation program and data, and is, for example, a CD-ROM. The program includes a map drawing unit, a route search unit, a route guidance unit, a current position calculation unit, a destination setting operation control unit, and the like, and an application unit and an OS unit that perform signal output processing for navigation.
Program for processing such as route search, display output control required for route guidance, program for performing voice output control required for voice guidance and data required for it, and display required for route guidance and map display Stores information data. Also, the data includes map data (road map, residential map, building shape map, etc.) necessary for route guidance, intersection data, node data, road data, photo data,
Registered point data, destination point data, guide road data, detailed destination data, destination reading data, telephone number data,
It consists of a file of address data and other data and stores all data necessary for the navigation device.

The central processing unit 4 includes a CPU 40 for executing various arithmetic processing, a flash memory 41 for reading and storing programs from the CD-ROM of the information storage device 3,
ROM 42 storing a program (program reading means) for performing program check and update processing of flash memory 41, set point coordinates of destination, road name code No. RAM 43 for temporarily storing searched route guidance information such as searched data and data during arithmetic processing, image memory 44 for storing image data used for screen display on a display, and display output control signals from CPU 40. An image processor 45 which retrieves image data from the image memory 44, performs image processing on the image data, and outputs the processed image to a display
Information storage device 3 based on an audio output control signal from the PU
The speaker 1 which synthesizes the voice, the phrase, the sentence, the sound, etc. read from
6, a communication interface 47 for exchanging input / output data by communication, a sensor input interface 48 for receiving a sensor signal of the current position detecting device 2, and a date and time for writing date and time in internal diagnostic information. A clock 49 and the like are provided. In the central processing unit 4, the data acquired by each sensor of the current position detection device 2 is used as the sensor input interface 4
8, the CPU 40, based on the data,
The current position coordinates are calculated at regular time intervals and temporarily stored in the RAM 4.
Write to 2. The current position coordinates are obtained by performing a map matching process in consideration of detection errors of various data. The output values of the various sensors are constantly corrected. Here, the route guidance is configured so that the driver can select either the screen display or the voice output.

FIG. 2 is a diagram showing a configuration example of road guidance data and the like, FIG. 3 is a diagram showing a configuration example of road attribute data and the like, FIG. 4 is a diagram showing a configuration example of caution data and the like, and FIG. It is a figure showing the example of composition of the data of a shape map. 2 to 5 show an example of the structure of a main data file stored in the information storage device. The guide road data file is, as shown in FIG. 2A, a road number for each of the road numbers n. , Length, road attribute data, address of shape data, address of size and address of guidance data, size, and are stored as data required for route guidance obtained by route search.

The road number is set for each direction (outbound, return) for each road between the branch points. The road attribute data is road guidance auxiliary information data, and as shown in FIG. 3A, information about an elevated road / underpass and whether the road is an elevated road, next to the elevated road, underpass, or next to the underpass and lanes. It is data showing information on the number. As shown in FIG. 2B, when the shape data is divided at a plurality of nodes (sections) on each road,
Each of the number m of nodes has coordinate data including east longitude and north latitude. As shown in FIG. 2C, the guidance data includes intersection (or branch) name, attention point data,
It consists of road name data, road name voice data address, size and destination data address, and size data.

The notice data of the guidance data is shown in FIG.
As shown in (A), it is data indicating information such as whether a railroad crossing, a tunnel entrance, a tunnel exit, a width reduction point, or no, and calls attention to a driver at a railroad crossing other than a junction, a tunnel, or the like. Data for Road name data is
As shown in FIG. 3 (B), information on road types of highways, urban highways, toll roads, general roads (national roads, prefectural roads, etc.) and highways, urban highways, toll roads Is information data, and is composed of road type data and an in-type number which is individual number data for each road type. As shown in FIG. 2D, the destination data includes a destination road number, a destination name, an address of destination name audio data, a size and destination direction data, and travel guidance data.

As shown in FIG. 2E, among the destination data, the destination direction data is invalid (do not use the destination direction data), unnecessary (do not guide), go straight,
This is data indicating information on a diagonally right direction, a right returning direction, a left direction, a diagonally left direction, and a left returning direction. As shown in FIG. 4 (B), the travel guidance data stores data for guiding which lane to travel when there are a plurality of lanes, and is rightward, leftward, centerwise, or none. This is data indicating the information.

The data of the building shape map is, for example, as shown in FIG.
As shown in (A), the data number N of each building is stored next to the data number N of buildings, bridges, towers, parks, playgrounds, roads, and the like. And the data of each building is
It consists of the building name, address (address), type, building shape, height, and detailed information. The name is the name of the building if it is a building, the name of the resident if it is a private house, the name of the facility if it is a facility, "Chuo-dori" if it is a road, or "National highway 1".
No. ”is the road type or street name, and the street address.
Is the address of the building. The shape of a building has a coordinate number n representing the shape and its coordinate values (x ₀ , y ₀ ), (x ₁ , y
₁ ), ..., (x _n-1 , y _n-1 ) and the type is information such as general houses, condominiums, office buildings, public facilities, roads, and parks. The height is information on the number of floors and the height (m). The details are, for example, information on each occupant in the case of a tenant building. For each m of the name and each tenant, the name, telephone number, room number, classification (type of business such as family restaurant, convenience store,..., Business content). Information about Therefore, as shown in FIG. 5 (B), by sequentially reading out coordinate values as information relating to the shape of the building, connecting and drawing with a line, and displaying it, various types of buildings, such as the planar shape of a building or a house, and the topography of a park, for example, are obtained. Can be output. Of course, roads can also be handled as data having a shape. In addition, road signs such as road entry prohibition and one-way traffic, street names, and street names, which are the names of areas, may be configured as independent data, or may be configured as associated data. In this case, for example, a mark indicating no entry or one-way traffic has a coordinate value and an angle for displaying the mark.
The same applies to street names and town names.

Next, the operation will be described. 6 is a diagram for explaining a flow of the entire system of the vehicle navigation device according to the present invention, FIG. 7 is a diagram for explaining a process of displaying a building shape map, and FIG. 8 is a process for displaying a building shape map. FIG. 9 is a diagram for explaining a display process of a building name, and FIG. 10 is a diagram showing a display example of a building shape map.

When the program of the route guidance system is started by the CPU 51 of the central processing unit 4, the current position is first detected by the current position detection device 2 and a map around the current position is displayed as shown in FIG. At the same time, the name of the current position and the like are displayed (step S1). Next, a destination is set using a telephone number, an address, a facility name, a registered point, and the like (step S2), and a route search from the current position to the destination is performed (step S3). When the route is determined, the route guidance / display is repeated until the vehicle arrives at the destination while tracking the current position by the current position detecting device 2 (step S4). If a detour setting is input before arriving at the destination, a search area is set, a re-search is performed in the search area, and route guidance is repeated until the vehicle arrives at the destination.

A determination means for determining a predetermined condition;
A switching means for switching the map when a predetermined condition is satisfied is provided. For example, the map can be switched at a desired timing by a user's manual operation. If the user wants to take a departure on the way, the user can quickly provide detailed information around the desired facility by switching the map. As a result, it is possible to obtain various information such as desired one-way information on the location of the facility, the location of the parking lot, or the surrounding area, and it is possible to reliably reach the destination.

In the above processing, a road map and a building shape map are displayed as necessary in each process such as input / confirmation / setting of a point such as a current position and a destination, confirmation of a search route, and route guidance. Next, a process of displaying a building shape map using the data described in FIG. 5 will be described.

For example, in the map display mode, when a building shape map is selected as shown in FIG.
11) First, display processing of a shape map is executed (step S12), and display processing of a building name is executed on the shape map (step S13). Then, a current position mark and guidance information are displayed. (Step S14). The shape of a building is a planar shape for general houses and buildings and other buildings, and the planar terrain for parks and roads. Therefore, in the case of a building having a large number of residents, there is information on the residents of the building, and even if it is the shape of one building, it has a lot of information. In the display processing of the building and the display processing of the building name in step S3, for a building or a public facility with a lot of such information, the shape is displayed in a display mode that is easily recognizable and different from ordinary houses, and priority is given. The name is displayed, and if the name overlaps, the name is not displayed. Furthermore, the names of towns and public facilities are displayed in descending order of priority by setting the town name, public facilities, and names with a lot of in-building information.

As shown in FIG. 8A, the process for displaying the building shape is to retrieve and read the building shape map data in the display range from the information storage device 3 (step S21), and to display the building shape to be displayed. (Step S2)
2). This display mode is the color of the shape to be displayed, its density, their pattern, etc. as described above, and is determined based on the type, height, and scale of the configuration. For example, by type, public facilities, stations, theaters, museums, amusement parks, towers, condominiums, buildings other than ordinary houses, etc. can be distinguished. In public facilities, public institutions such as government offices, police stations, public halls and parks And public facilities such as sports grounds, and even buildings other than ordinary houses can be distinguished by height (number of floors), number of tenants, and the like. After the display mode is determined in this way, a building shape map is displayed (step S23), and the inside of the shape is displayed in the determined display mode (step S2).
4).

The display mode in step S22 is, for example, by registering a display mode determination table as shown in FIG. 8B, by referring to the data of the building shape map to be displayed and this display mode determination table. Can be determined. FIG. 8B shows an a color when the building to be displayed is a public facility, a d color when the displayed building is a guide road,
If it ’s not a public facility or road, and you have more information,
If the height is equal to or greater than a predetermined value, the color is corresponding to the type, height, and configuration scale, such as a c-color net pattern, depending on the scale. This is an example in which display modes such as densities and their patterns are set. Therefore, when this display mode determination table is used, step S
At 22, the following processing is performed.

First, as shown in FIG. 8 (C), the data of each building shape map is referred to as a display mode determination table (step S31), and it is first checked whether the type is a public facility or a road or other (step S32). In the case of a public facility, the display mode is determined to be the color a (step S33). If the road is a road and the road is a road on the searched guide route (guide road), the display mode is set to d. The color is determined (step S34). Since the searched route is included in the guide road data as described in FIG. 2, the guide route is drawn on the map with a width corresponding to the number of lanes based on the guide road data. In other cases that are not public facilities or roads, it is next checked whether or not there is detailed information (step S3).
5) If there is, depending on whether or not the number of names in it is equal to or more than α (step S36), the display mode for those having α or more is b color (step S38), and the display mode for those not having α is light b The color is determined (step S37). Even if there is no detailed information, the height of the building is further checked (step S39), and if the height is a certain height or more, the display mode is determined to be a c-color netting (step S40). In this case, whether or not it is a public facility has the highest priority,
Next, detailed information, the size of the structure of the building, is given priority.
Finally, the display mode is determined by the height.

The names displayed on the buildings vary in length, and not all names can be displayed depending on the size of the screen and the display range. Therefore, similar to the case of determining the above-described display mode, for example, a priority order according to the type and a priority order according to the amount of detailed information are provided and displayed within a range that does not overlap. FIG. 9 shows an example of the processing. First, the names are stored in the range of data to be displayed in descending order of the number m of names in the detailed information (step S5).
1). Then, the display range of names on the map is calculated (step S53) for all names in descending order of the number m of names (step S53), and those that do not overlap the display range of the names already displayed (step S54). , The name is displayed on the map (step S55). Then, the display range is stored (step S56), and the process returns to step S52 to repeat the same processing.

Here, the display range of the name is determined by distributing the character from the center to the both sides from the center of the building according to the vertical and horizontal size of one character, the character interval, and the number of characters, and by the coordinates of the upper left and lower right positions of the character string. It is memorized. If the display range is not overlapped, judging only from the vertical and horizontal size of the character and the character spacing, adjacent names are displayed at a short interval on the whole surface, making it difficult to see the map. If the distances are longer than the above, processing may be performed to determine that the display ranges do not overlap. As a method in this case, for example, the character size α
This can be achieved by setting the display range to double and β times to the left and right, or setting a predetermined number of characters vertically and horizontally as the allowable interval. Needless to say, the name includes not only a character string but also a mark of a school, a hospital, a post office, and the like, a service mark, and other various characters and patterns that are generally used for displaying a map.

As described above, in the data of the building shape map of the present invention, the center coordinates and the coordinates of the display range when displaying the name can be determined by calculation from the shape coordinate sequence. Therefore, another map stored together with the building shape map in the information storage device can be displayed, and the name of the data of the building shape map can be displayed on the other map in a display range calculated from the coordinate sequence. In this case, the process of displaying the map and the process of displaying the name can be executed without being aware of each other at all, and the gap between the display of the map and the display of the name can be eliminated by matching the display coordinates of each. By such a combination of processes, as a name display data, a coordinate sequence and a name of a shape in the data of the building shape map can be shared with other maps, and the data amount can be significantly reduced.

FIG. 1 shows a display example of a building shape map.
FIG. 1 shows a display example of a building shape map when the vehicle is stopped.
0 (A), a display example of a building shape map from which information other than road information has been deleted is shown in FIG. 10 (B), a route display, a current position mark display, and a guidance intersection at a building shape map from which information other than road information has been deleted. FIG. 10C shows an example in which a mark display and a one-way mark display are incorporated. FIG. 10 (A)
The names of the parks, public facilities, and streets are also displayed as the names of the buildings, and some of the buildings, which are represented by some patterns, have different display modes. In the case of color display, since the display can be distinguished by color, density, and a combination of those patterns, the display mode is changed according to data type information, height information, the number of detailed names, and the like. For example, schools, city halls, post offices, public facilities such as stations, buildings such as parks that can be generally recognized as landmarks, and tenant buildings, buildings with a large number of names are displayed in the normal display mode. By adopting different display modes, it is possible to make it easier to understand the target objects and features of the area displayed as the map. FIG. 10B shows an example in which the drawing of the house shape is restricted and displayed from the building shape map, in which highlighting of information on roads such as one-way marks, route display, and landmarks are shown. FIG. 10C shows an example of displaying. These are further described below.

The above-described processing is performed when the building shape map is displayed in the normal mode. However, when the building shape map is displayed for route guidance in a running vehicle, the map is displayed on the map. If the amount of information in is large, information necessary for traveling is buried in other information. In particular, when the vehicle is running at a certain speed or higher, it is difficult to recognize the information by viewing the screen while the vehicle is running, even if a map is displayed. For this reason, even when a building shape map is displayed on the guidance screen, it is necessary to display the guidance information so that the guidance information can be identified and recognized almost instantly with a simple look. The display example will be described below. FIG. 11 is a diagram showing an example of a guidance screen based on a building shape map, FIG. 12 is a diagram for explaining an example of a house shape display process, and FIG. 13 is a diagram for explaining an example of a one-way mark display process. FIG. 14 is a diagram for explaining an example of a route display process, and FIG. 15 is a diagram for explaining an example of a mark display process.

In FIG. 11, 61 is a road, 62 is a guide route, 63 is a center line, 64, 65 and 69 are one-way roads, 66 and 70 are one-way marks, 67 is a search range line, and 68 is a current position mark. Is shown. When the building shape map is displayed on the guidance screen during traveling, basically, as shown in FIG. 11A, the road 61, the one-way road 64,
At 65 and 69, a current position mark 68 indicating the current position on the road is displayed. Further, as information relating to the road, information necessary for traveling, such as a one-way mark 66, a level crossing, a pedestrian crossing, and a mark that can be immediately recognized along the road, is easily understood according to the traveling state (emphasis). Display). In this case, the necessary information is information related to the road around the current position, which is within a certain radius around the current position, information about a road along the traveling direction from the current position, and information on the traveling direction. Only information on roads within a predetermined angle range and road information within a predetermined distance range in the traveling direction are highlighted. Further, the range of angles and distances may be changed according to the vehicle speed, such as emphasizing a relatively distant front in high-speed running, and emphasizing a relatively close front in low-speed running. Further, information related to the calculated guide route may be retrieved from the storage unit, and the information related to the guide route may be emphasized. The information related to the guide route is, for example, information on a road connected to a road on the guide route, information on a road around the road on the guide route, and the like. Among them, the search range line 67 has a range set at a fixed angle with respect to the front of the current position mark 68, for example, an angle of ± 60 °, in order to search for information to be highlighted. For example, the one-way mark 66 is searched and highlighted in this range, and the one-way mark 70 is normally displayed because it is outside the search range, and before the current position mark 68 reaches the position shown in FIG. In other words, when the one-way mark 70 is located in front of the one-way road 69 further down in the figure, the one-way mark 70 is also highlighted, and the display is switched from the highlighted display to the normal display after passing. Therefore, in the building shape map shown in FIG. 10 (A), information not necessary for traveling, such as a house shape, is drawn in the same color as the background color, or is not drawn, so that FIG. As shown in (B), it is not displayed substantially. The guide route 62 is drawn with a predetermined width based on the coordinate value and the number of lanes from the guide road data. When searching for a highlight mark or the like from the position of the current position mark 68, the range is set by an angle with respect to a certain traveling direction as described above. May be set at a fixed distance. As shown in FIG. 10 (B), the display of the house shape is erased from the structure shape map shown in FIG. 10 (A) to display the current position mark and the route, and a one-way mark is displayed as information on roads along the route. FIG. 10C shows a highlight, and a mark of a school, a post office, and a gas station is displayed as a mark.

Next, an example of a display process according to the traveling on the building shape map will be described. As a usage of the building shape map, for example, when finding a point to be set as a destination from a map of an area displayed based on some guide information, it is desired to display rather detailed information. During driving, only the information related to the road needs to be highlighted. Conversely, house shapes that are not related to roads are not required.
Therefore, in the display of the house shape, the current position is recognized as shown in FIG. 12 (step S61), a building shape map around the current position is drawn (step S62), and whether the vehicle speed is equal to or higher than a predetermined value is determined. Is determined (step S63). If the vehicle speed is equal to or higher than the predetermined value, the background color is set on the pallet of the house shape, for example, as shown in FIG. 10B (step S64). By setting, for example, a house shape color as shown in FIG.
Display is made as shown in (A) (step S65). In this process, whether or not the house shape is not related to the road to be guided can be determined based on the data type of the building shape map described with reference to FIG. Therefore, a special type of house shape can be excluded from this processing target.

Further, when the display palette of the house shape, which is not required to be displayed during traveling, is changed to the same palette as the background color based on the predetermined vehicle speed as described above, the display screen is substantially displayed. Although it is not displayed, the drawing processing is the same as the actual display. In this way, when the display content between when the vehicle is traveling at a predetermined vehicle speed or higher and when the vehicle is stopped or traveling at a low speed is switched by changing the pallet, there is an effect that display processing can be quickly performed at the boundary of the predetermined vehicle speed. Also, the display control means is provided with means for determining a predetermined condition, and when it is determined that the predetermined condition is satisfied, information necessary for display is selected from the storage means, so that only the information necessary for display is drawn. Can also be configured. With this configuration, the time required for the drawing process can be reduced.
Even when the vehicle is running at a high speed, or when a high-speed drawing process is required, such as during a screen scroll operation, the drawing process can be performed quickly. Further, these processes may be switched as necessary by means for determining a predetermined condition.

Information on the road such as a one-way mark for the house shape is selected and highlighted as necessary information on the traveling direction during traveling. In the display of the one-way mark, as shown in FIG. 13, it is determined whether or not the vehicle speed is equal to or higher than a predetermined value (step S71). A mark is searched (step S72), and the searched one-way mark is highlighted (step S73). However, if the vehicle speed is not higher than the predetermined value, it is determined whether the previous vehicle speed is higher than the predetermined value (step S74). If the previous vehicle speed is higher than the predetermined value, the display is highlighted. The highlighting of the one-way mark is erased and a normal display is made (step S7).
5). In this case, the one-way mark around the current position may be highlighted as described above, or the search range may be set according to the distance or angle and may be changed according to the vehicle speed. If a one-way mark is not registered in the data of the building shape map, and the search is not possible, a one-way mark may be determined based on the type of road data and the one-way mark may be displayed. Further, not only one-way marks but also marks such as railroad crossings, pedestrian crossings, traffic lights, and the like may be subjected to such display control, and particularly, roads where entry is prohibited may be highlighted. As the form of highlighting, information to be highlighted may be displayed so as to be more conspicuous than other information currently displayed, or only information to be highlighted may be displayed on the screen. In order to display only the information to be highlighted on the screen, the information other than the information to be highlighted may be deleted from the screen, or only the information to be highlighted may be selected and only the selected information may be drawn. You may. In the example of FIG. 10C, a one-way road is connected behind the current position, but is not a road in the traveling direction. Therefore, by deleting the one-way mark displayed in FIG. By displaying only the one-way mark in the traveling direction, the highlight is displayed as a result.

When displaying a route on a road map,
Since the road is displayed as a single line, it is only necessary to display the road in a specific color. However, when displaying a route on a building shape map, draw the lines and center lines on both sides and Is displayed according to the width of the vehicle, it is necessary to display the route on the side of the traveling lane shifted from the center line. In the display of the route, as shown in FIG. 14, the following processing is repeated until the processing for the number of route roads is performed for each road number based on the guide road data (step S81). The route width is calculated from the number of lanes on the route road (step S8).
2) It is determined whether the road is one-way (step S8)
3). If the road is a one-way road, a contour is created from the route width (step S85). If the road is not a one-way road, the contour is shifted by half of the route width, that is, shifted from the center line to the opposite lane. (Step S84), and 62, 71 to 73 in FIG.
As shown in (C), the contour is painted in a predetermined pattern (step S86).

Since the guide road data created by the road map data has information on each road as shown in FIGS. 2 to 4, by using the information,
By matching on the building shape map and displaying the route with a blurred road width pattern such as a mesh pattern, road information, for example, lane information, road names, and the like can be displayed in an easily understandable manner. In addition, by using information from the right, from the left, and from the center of the travel guidance data shown in FIG. 4B, even when the number of lanes is plural, FIG.
As shown at 73 in (B), a specific lane may be selected to perform route display. In the route display shown in FIG. 11B, since the route 71 at the current position is a one-way road, the pattern is drawn as it is at the center of the road. Turn left at the next intersection, Route 7
This is an example in which a lane near the center is selected so as to select a lane near the center as shown in the patterns shown in routes 72 to 73 in order to make a right turn from 3 to 74.

When a route is guided by a road map,
Conventionally, when an intersection to be guided is approached, the display is switched to a more detailed intersection guide map in order to improve the visibility of the guidance information. However, when performing route guidance using a building shape map, since the map itself has detailed information,
Even at the guidance intersection, guidance can be provided by displaying a characteristic mark without displaying the intersection guide map. In the display of the mark, as shown in FIG. 15, the current position is recognized (step S91), and it is determined whether or not the distance to the guidance intersection is within a predetermined value (step S92). Then, the facility around the guidance intersection is searched (step S93). Then, a searchable facility is searched for a mark that can be displayed (step S94), and the mark is drawn at the searched position (step S95). For example, gas stations, banks, public offices (police, fire,
When facilities such as government offices, post offices, schools, convenience stores, family restaurants, etc. are located near an intersection to be guided, for example, as shown in FIG. By displaying landmarks consisting of patterns (landmarks),
Intersections and routes can be guided in an easy-to-understand manner without switching to the intersection map as in the related art and without changing the building shape map. Needless to say, characters having no mark in general may be characters such as “Government Office” in FIG. 10C. The predetermined value for determining whether or not the distance to the guidance intersection is within a predetermined value may be changed according to the vehicle speed. Further, by providing a means for searching for the landmark information around the detected current position, a mark is displayed along with the movement of the current position, and the current position can be easily confirmed. Further, by providing a means for searching for landmark information around the route, only the landmarks along the route may be displayed. Further, a control may be performed on a mark to be displayed by searching for mark information located ahead of the current position in the traveling direction. When displaying a mark around the current position, the search range and the distance may be changed according to the vehicle speed. Further, a search may be performed in a wide range, and mark information to be displayed may be displayed by performing a selection process according to the vehicle speed.

Next, the flash memory 41 is read from the CD-ROM of the information storage device 3 in which the program and data are recorded.
The operation of the system for loading the program will be explained. 16 is a diagram for explaining a program loading process, FIG. 17 is a diagram for explaining a program version check process, and FIG. 18 is a diagram for explaining a structure of CD-ROM data. As described above, the navigation device according to the present invention uses the CD-R of the external storage device.
A relatively large-capacity flash memory 41 for reading a program from the OM, and a small-capacity R storing a program (program reading means) for starting up a CD.
Built-in OM42. The flash memory 41 is a non-volatile storage unit that retains stored information even when the power is turned off. Then, as a start-up process of the CD, the program in the ROM 42 which is a program reading means is started, the program stored in the flash memory 41 is checked, and disk management information of the CD-ROM of the information storage device 3 is read. The program loading process (update process) is performed based on this information and the state of the flash memory 41.

First, when the power is turned on, as shown in FIG. 16, the screen is turned off (step S11), and a program check is performed to determine whether or not the program is normally written in the flash memory (step S12). If the program check is OK, the program stored in the flash memory is started (step S1).
3) Opening screen is displayed (step S1)
4), the disk management information of the CD-ROM is read (step S15), and the program version No. of the CD-ROM is read. And the program version No. stored in the flash memory. Then, the program version is checked (step S16). It is determined whether or not to update the program based on the comparison of the program versions (step S17). If the program version of the CD-ROM is not higher than the program version of the flash memory, the program of the flash memory is not updated. To display the map screen (step S18). If the program version of the CD-ROM has been upgraded, the screen is switched to the upgrade screen (step S19) and the flash memory is cleared (step S20). It returns to the process of step S12.

If the program check is unsuccessful in the processing of step S12, the disk management information of the CD-ROM is read (step S21), and it is first checked whether or not the disk is a dedicated disk (step S22). If it is not a dedicated disk, a guide message "Please insert a dedicated disk" is displayed on the screen (step S23). If it is a dedicated disk, the loader program of the CD-ROM is read (step S24), and the loader program is started (step S24). Step S25). Then, a message "program loading" is displayed (step S26), and the CD
-Read the navigation program in the ROM (step S27), write it into the flash memory (step S28), restart (step S29), and return to the processing of step S12. In this way, when the program is normally written in the flash memory, even if a compatible CD-ROM is set, the program versions of both are compared and the CD-ROM is upgraded. Only by updating the program in the flash memory, it is possible to always operate the system with the latest version of the program without loading the program unnecessarily.

The version check process in steps S16 to S17 compares the program version in the flash memory with the program version in the CD-ROM (step S31) as shown in FIG. Is checked (step S32), and the classification No. If the update No. is not different, the update number in the flash memory is further changed. It is checked whether or not is older than the one in the CD-ROM (step S33). Then, the classification No. If they are different, or the classification No. The update No. in the flash memory is not different. If is older, the program is updated and the classification No. Update N in the flash memory
o. If it is older than that in the CD-ROM, it is determined that the program is not updated.

The structure of the CD-ROM data is, for example, as shown in FIG.
As shown in FIG. 8, disk management information, a loader program,
It consists of navigation programs and data. The disc management information is the type of the CD-ROM (for navigation, music, video, etc.), if it is for navigation, it is a district version, nationwide version, or for tourism, leisure, genre, etc. , Update no. With information such as.
In the case of navigation, if it is a district version, the area can be identified from the coordinates by holding the area with the coordinates. The navigation program includes a map drawing unit, a route search unit, a route guidance unit, a current position calculation unit, a destination setting operation control unit, and the like, as described above, and an application unit and an OS unit for performing signal output processing of navigation. And the data is map data, search data, guidance data, map matching data, destination data, and the like.

When a CD changer is used in combination with the program reading means, the CD can be automatically exchanged based on the exchange instruction. When a CD is specified, first, a process of reading disk management information (disk label) of the CD is executed, and the content of the disk management information is determined to select a CD to be driven. Then, if the selected CD is the navigation CD, the classification number of the selected CD. , Update (version) No.
Confirm, and execute the above-mentioned program memory update processing.

It should be noted that the present invention is not limited to the above embodiment, and various modifications are possible. For example, in the above embodiment, landmarks are displayed as landmarks.
Since there is height information in the data of the building shape map, by searching for this height information and searching for a special building such as a tower by type, it is particularly high or special. The building may be displayed as a mark. Further, in switching the map, a road map may be displayed and guided to the vicinity of the destination, and the map may be switched to the building shape map on the condition that the vehicle approaches the destination.

[0050]

As is apparent from the above description, according to the present invention, information on the vicinity of the current position and landmarks is retrieved and displayed on the building shape map, so that no special intersection guide map is used. In addition, it is possible to provide guidance at the guidance intersection with the building shape map as it is. In addition, by searching for a mark along the traveling direction from the current position and displaying the mark on the building shape map, the current position can be easily confirmed.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a guidance device using a building shape map according to the present invention as a navigation device.

FIG. 2 is a diagram showing a configuration example of road guidance data and the like.

FIG. 3 is a diagram showing a configuration example of road attribute data and the like.

FIG. 4 is a diagram showing a configuration example of attention point data and the like.

FIG. 5 is a diagram showing a configuration example of data of a building shape map.

FIG. 6 is a diagram for explaining a flow of the entire system of the vehicle navigation device according to the present invention.

FIG. 7 is a diagram illustrating a process of displaying a building shape map.

FIG. 8 is a diagram illustrating a process of displaying a building shape.

FIG. 9 is a diagram for explaining a building name display process.

FIG. 10 is a diagram showing a display example of a building shape map.

FIG. 11 is a diagram showing an example of a guidance screen based on a building shape map.

FIG. 12 is a diagram illustrating an example of a house shape display process.

FIG. 13 is a diagram illustrating an example of a one-way mark display process.

FIG. 14 is a diagram for describing an example of route display processing.

FIG. 15 is a diagram illustrating an example of a mark display process.

FIG. 16 is a diagram for explaining a program loading process.

FIG. 17 is a diagram for describing processing of a program version check.

FIG. 18 is a diagram for explaining the structure of CD-ROM data.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 input / output device, 2 current position detecting device, 3 information storage device, 4 central processing device, 11 touch switch, 12
... Display, 13 ... Printer, 16 ... Speaker, 2
1 ... GPS receiver, 22 ... beacon receiver, 23 ...
Data transmitting / receiving device, 24 ... Absolute direction sensor, 25 ... Relative direction sensor, 25 is distance sensor, 40 ... CPU, 41 ...
Flash memory, 42 ... ROM, 43 ... RAM, 44
... image memory, 45 ... image processor, 46 ... audio processor, 47 ... communication interface, 48 ... input interface

Claims (13)

[Claims] 1. A guide device using a building shape map for guiding a road by displaying a building shape map in which a house shape or a road is drawn, and retrieving landmark information around a specific point to search for a building shape. A guide device using a building shape map, wherein a mark is displayed on a map. 2. The guide apparatus according to claim 1, wherein a range is set in the traveling direction from the current position according to the vehicle speed, and the landmark information is searched. 3. The guide device according to claim 2, wherein the search unit searches for landmark information within a predetermined angle range in the traveling direction. 4. The guide device according to claim 2, wherein the search unit searches for landmark information within a predetermined distance in the traveling direction. 5. A guidance device based on a building shape map according to claim 2, wherein landmark information around the guidance intersection is searched. 6. The guide device according to claim 1, wherein a landmark is displayed as a mark. 7. A guide device based on a building shape map for guiding a road by displaying a building shape map on which a house shape or a road is drawn, wherein the building on which a house shape or a road recorded on a recording medium is drawn. A recording medium reading means for reading a program and data for displaying a shape map and performing road guidance; a non-volatile recording means for storing a program; and a non-volatile storage means for storing the program read by the recording medium reading means. Reading means for reading a program to be read into the recording means; display means for displaying the building shape map; executing the program read by the reading means for the program, and executing the program read by the reading means for the recording medium based on data recorded on the recording medium through the recording medium reading means. Processing means for displaying a building shape map on the display means and guiding the road, and providing a mark around the current position. Guiding device according to building shape map and displaying a mark search and on the building shape map distribution. 8. A route to the input destination is calculated,
In a guidance device that performs guidance by display or voice along with movement of the current position, storage means for storing house shape information including landmark information, and retrieval means for retrieving landmark information from the storage means according to predetermined conditions Display control means for processing and displaying and outputting the house shape information stored in the storage means, wherein the display control means controls display of the landmark information retrieved by the retrieval means. apparatus. 9. A current position detecting means for detecting a current position, a storage means for storing house shape information including landmark information and guidance information, and a landmark information around the current position detected by the current position detecting means. Search means for searching from storage means; display means for displaying information around the current position based on the current position detected by the current position detection means and guidance information stored in the storage means; A guidance device, comprising: display control means for controlling display information to be displayed, wherein the display control means controls display of mark information retrieved by the retrieval means. 10. A current position detecting means for detecting a current position, a route calculating means for calculating a route to a destination, a storage means for storing house shape information including landmark information and guidance information, and the route calculating means. Search means for searching the landmark information along the route calculated from the storage means, and information around the current position based on the current position detected by the current position detection means and the guidance information stored in the storage means. A guidance device, comprising: display means for displaying; and display control means for controlling display information to be displayed on the display means, wherein the display control means controls display of the mark information retrieved by the retrieval means. . 11. The current position detection means has a vehicle speed detection means for detecting a vehicle speed, and the display control means controls display information to be displayed on the display means based on the detected vehicle speed. The guide device according to claim 9, wherein the guide device includes: 12. The guidance apparatus according to claim 10, wherein the search unit searches only the landmark information of the guide point on the route calculated by the route calculation unit. 13. A recording medium for a guide device based on a building shape map for guiding a road by displaying a building shape map in which a house shape and a road are drawn. Building shape map data having information on the shape and information belonging to the building, and displaying a building shape map in which the shape of each building is drawn based on the building shape map data, and displaying the building shape map on the building shape map. A recording medium for a guide device using a building shape map, wherein a program for searching for landmark information around a specific point and displaying the landmark is recorded.