JP2002071374A - Object retrieval device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the result of retrieval of objects usable effectively, even while an automobile is running on a superhighway, on a course-unchangeable road such as on elevated highways, in tunnels, etc., or at a high running speed. SOLUTION: The retriever comprises a means for storing information concerning a plurality of objects, a means for determining a retrieval reference position for retrieving the objects, a means for retrieving the target from the retrieval reference position and a means for outputting information concerning the retrieved object. It then determines an interchange for leaving from the superhighway to an ordinary road on an optimum route as a retrieval reference position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a target search device.

[0002]

2. Description of the Related Art As a conventional navigation device, there is, for example, an on-vehicle navigation device disclosed in JP-A-61-194473. In this vehicle-mounted navigation device, a map of an area desired by the user is displayed on a display device, and when the user selects a desired facility, the location of the facility present on the map screen is displayed by a mark. In addition, in response to the user's operation, the description of the facility displayed on the map screen is displayed. The user can set the destination based on the display and description of the facility on the map screen.

[0003]

For example, when a vehicle on which a user rides is traveling according to a route guide to a preset destination using a navigation device, a request for a meal or shopping is made. Occurs, and the user immediately tries to find a desired facility using the navigation device. In the above conventional navigation device, when a user selects a desired genre of a facility from a menu display, the facility of the designated genre existing in the map displayed at that time is displayed on the map screen.

However, the target such as the facility is searched based on the current position of the vehicle. Therefore, when the vehicle is traveling on a highway and searches for a target existing along a general road, the target is searched based on the current location on the highway, but after the vehicle has landed on a general road, Otherwise, the user cannot go to the target and cannot use the search results effectively. Also, if the car is traveling on an elevated road or tunnel, you must arrive at the next intersection to appear,
Since it is not possible to change the course and go to the target, the search results cannot be used effectively. Furthermore, when the traveling speed of the automobile is high, the route cannot be changed to reach the target unless the vehicle has been decelerated to some extent, so that the search results cannot be used effectively.

[0005] The present invention solves the above-mentioned conventional problems,
Whether the car is traveling on a highway, on an elevated road, inside a tunnel, etc. It is an object of the present invention to provide a target search device capable of performing a search.

[0006]

In order to achieve the object, a target search apparatus according to the present invention includes means for storing information on a plurality of targets, and means for determining a search reference position for searching for the target. Means for searching for the target based on the search reference position, and means for outputting information about the searched target, wherein the search for an interchange descending from an expressway to a general road on an optimal route is performed. Determined as the reference position.

In another object search device of the present invention,
Means for storing information about a plurality of targets, means for determining a search reference position for searching for the target, means for searching for the target based on the search reference position, and Means for outputting information about the target object, and an intersection ahead of the current position is determined as the search reference position.

In still another object search device according to the present invention, means for storing information on a plurality of objects, means for determining a search reference position for searching for the object, There is provided a means for searching for the target based on a reference, and a means for outputting information about the searched target, and a position ahead of a current position is determined as the search reference position according to a traveling speed.

[0009]

According to the present invention, when a car is traveling on an expressway, a target is searched using the interchange descending from the expressway to a general road as a search reference position, so that the results of the search can be used effectively. .

[0010] Further, when the car is traveling on a place where the course cannot be changed, such as an elevated road or a tunnel, a target is searched using an intersection ahead of the current position as a search reference position. It can be used effectively.

Further, when the traveling speed of the automobile is high, the target is searched for using a position ahead of the current position as a search reference position in accordance with the running speed, so that the result of the search can be utilized effectively. .

[0012]

FIG. 1 shows the entire circuit of a navigation device. The central processing unit 1 performs operation control and calculation of the navigation device by the CPU 2. ROMs 3 and 5 contain C
A system program executed by the PU 2 and various parameters are stored. The RAM 4 stores data input from the outside, various parameters used for calculation, calculation results, and the like. The clock 6 generates time information. The sensor input interface 7 inputs detection data from the absolute direction sensor 21, the relative direction sensor 22, the distance sensor 23, and the acceleration sensor 24 of the current position detection device 20 and sends the data to the CPU 2. Communication interface 8
Transmits and receives various data to and from a device connected to the data bus 28.

The image processor 9 reads out image data stored in the image memory 10 and outputs the image data to a display 33 such as a CRT, a liquid crystal display, or a plasma display, which can display images. The image memory 10 stores image data displayed on the screen of the display 33 and transmits and receives image data to and from the image processor 9. The image processor 9 converts data of a target or a road, which will be described later, into display data according to a command from the CPU 2 to form image data to be displayed on the screen of the display 33. At this time, an image around the screen displayed on the display 33 is also formed for scrolling the screen, and is stored in the image memory 10. The audio processor 11 inputs the synthesized audio waveform data read from the ROMs 3 and 5 by the CPU 2 to form an analog audio waveform, and sends the analog audio waveform to the speaker 13.

The current position detecting device 20 is a device for obtaining data for detecting the current position of an automobile equipped with a navigation device (hereinafter referred to as “own vehicle”). The absolute direction sensor 21 is, for example, a geomagnetic sensor that detects geomagnetism and outputs data indicating the north-south direction as the absolute direction. The relative azimuth sensor 22 outputs data indicating a deviation of the traveling direction of the vehicle from the absolute azimuth detected by the absolute azimuth sensor 21, and detects a gyro device such as a piezoelectric vibrating gyro or a steering angle of a wheel. This is a steering angle sensor. The distance sensor 23 outputs data indicating a traveling distance of the own vehicle, and is, for example, a digital counter linked to a traveling distance meter. Acceleration sensor 24
Is for detecting the acceleration of the vehicle, and is, for example, a semiconductor acceleration sensor.

The GPS receiving device 25 is a GPS (glob)
al Positioning system) and outputs position data. Beacon receiver 2
6 receives GPS correction data and a beacon from an information providing system such as VICS (Road Traffic Information Communication System) and outputs the received data. The data transmitting / receiving device 27 transmits / receives current position information to / from the interactive current position information providing system.

The data communication device 30 is a VICS or ATI
Signals are transmitted and received to and from a road information system such as S (traffic information service). The data transmitting and receiving unit 31 is, for example, V
The transmitting / receiving unit of the ICS is, for example, A
It is a communication unit of TIS.

On the screen of the display 33, a transparent touch panel 34 is provided. This touch panel has transparent touch switches arranged in a planar matrix. The printer 35 prints various information such as maps and facility guides output via the communication interface 8. The recording card reader 36 is an IC card, RO
This is a reading device for a card-shaped recording medium such as an M card and a memory card. The CD-ROM driver 37 is a reading device for a CD-ROM, which is a compact disk (CD) storage medium.

The voice recognition device 38 converts the voice picked up by the microphone 39 into a digital signal, determines whether a voice matching a predetermined command has been input, and determines whether a voice matching the command has been input. If so, the command data is sent to the CPU 2. This voice recognition device 38
Either the specific speaker recognition method or the unspecified speaker recognition method may be used.

The operation switch 40 is a wired remote control switch or a wireless remote control switch, or a manual switch arranged around the display 33. The operation switch 40 is used to operate the touch panel 34 for menu display, image quality adjustment, start of destination setting, and the like. This is a switch for instructing an operation other than.

The above-mentioned card type storage medium or CD-ROM
Various data files as shown in FIG. 2 are stored in the external storage medium such as. The map data file F1 stores map data such as a national road map. The intersection data file F2 stores data on the intersection such as the position and name of the intersection. The node data file F3 stores data of nodes set on the road. The road data file F4 stores data on roads, such as the position and type of road, the number of lanes, and the connection relationship between roads. The photograph data file F5 stores image data of photographs of places where visual display is required, such as various facilities, sightseeing spots, and major intersections.

The destination data file F6 stores data such as locations and names of places and facilities which are likely to become destinations such as companies and offices described in main tourist spots, buildings, and telephone directories. Have been. The guidance point data file F7 stores guidance data of points where guidance such as the contents of a guidance display board installed on a road and guidance of a junction is required. The detailed destination data file F8 stores detailed data relating to the destination stored in the destination data file F6. The road name data file F10 stores name data of main roads among the roads stored in the road data file F4. The branch point name data file F11 stores name data of main branch points. The address data file F11 stores list data for searching a destination stored in the destination data file F6 from an address.

The area / city station number list file F12 stores list data of only the area / city station numbers of the destination stored in the destination data file F6. The registered telephone number file F13 stores telephone number data to be remembered, such as business partners registered by a manual operation of the user. The landmark data file F14 stores data such as the position of a landmark on travel and the position and name of a place to be memorized, which are input by the user through a manual operation. The point data file F15 stores detailed data of the landmark points stored in the landmark data file F14. The target data file F16 stores data such as the position and description of the target, such as a place where the user wants to stop by other than the destination such as a gas station, a convenience store, or a parking lot.

FIG. 3 shows the target object data file F16.
Is shown in detail. The target objects are classified into a plurality of genres.
N. Genres are divided into types such as facilities and places.For example, gas stations, convenience stores, parking lots, hotels, restaurants, family restaurants, soba shops, coffee shops, stations, subway station entrances, hospitals, parks, police, Post offices, golf courses, golf driving ranges, temples and shrines, cosmetics shops, pharmacies, and other facilities and places that may be dropped off while traveling. In each of the genres J1 to Jn, genre code number data JC, target property number data m, and target object list data L1 to Lm determined for each genre are stored.

The target list data L1 to Lm include, for each of the m targets, target name data MM, target telephone number data MT, and target coordinate data M on the map.
Z, information data MD on the target is stored.
In the target information data MD, information on the target is classified into a plurality of items and stored. This item includes, for example, the usage fee of the target, the accommodation capacity of the facility (the number of parked vehicles and the number of people accommodated, the width, height, and length of vehicles that can be accommodated, etc.), and the brand (the name of the gas station distributor, chain store, etc.) , Address, service contents, availability of parking lot, business hours, types of restaurants, information on restaurants (whether they are high-end, whether they are chain stores, famous chefs, etc.), convenience store Information about items that are selection conditions when dropping in during traveling, such as a store name, is stored.

FIG. 4 shows a data group stored in the RAM 4. In the external data GD, all or a part of the data stored in the external storage medium read by the recording card reader 36 or the CD-ROM driver 37 is copied. The current position data MP is the current position data of the own vehicle detected by the current position detection device 20. The absolute direction data ZD is data obtained based on data from the absolute direction sensor 21. The relative azimuth data θ1 is an angle formed by the traveling direction of the own vehicle with respect to the absolute azimuth obtained based on the data from the relative azimuth sensor 22.

The travel distance data ML is the travel distance of the own vehicle obtained based on the data from the distance sensor 23. The acceleration data ma is the acceleration detected by the acceleration sensor 24. The current position information PI is data on the current position input from the beacon receiving device 26 or the data transmitting / receiving device 27. VICS data VD
Is VICS data input from the data transmission / reception unit 31. ATIS data AD is ATIS data input from the telephone calling unit 32. The registered destination data TP is data on the destination such as the position and name of the destination registered by the user.

The registered target data SP is data relating to the target such as the position and name of the target set by the user. The optimum route data MW is data of an optimum route obtained in a route search process (step 52) described later. The genre code number JC is a genre code number of the genre selected in the target object selecting operation processing described later. The area designation data AS is data that designates a search area input in the target object selection operation processing. The sub-reference data KS is data for searching for a target input in the target selection operation processing. This sub-reference data KS may be plural.

The reference position data KP is a reference position for searching for a target determined in a reference position determination process described later.
The road information RD is information such as whether the traveling road used in the automatic setting process described later is an expressway or a general road. The traveling speed data V is the traveling speed of the own vehicle. The search area data KA is coordinate data of a search area for a target obtained in a target search process described later.
The search target data KM is data relating to the target searched in the target search processing, and is retrieved from the external data GD and stored.

The reaching distance data TK is the reaching distance to the search target obtained in the priority order determining process described later. The priority data UN is a priority displayed for selecting a search target determined in the priority determination processing. The target relative azimuth data θ2 is an angle formed by the search target with respect to the absolute direction. The target direction data θ is
The angle between the traveling direction of the vehicle and the search target. The destination avoidance data MK is the original destination data stored before the target is registered in the target registration processing. Although not shown, the RAM 4 stores data and variable data for various other processes.

FIG. 5 is a flowchart of the overall processing executed by the CPU 2. This process starts when the power is turned on and ends when the power is turned off. At the start, initialization processing of the CPU 2, the RAM 4, the image memory 9, and the like is performed. Then, the current position acquisition processing (step 50), the destination setting processing (step 51),
Route search processing (step 52) and guidance display processing (step 53) are repeatedly executed.

In the current position acquisition processing (step 50),
The current position of the vehicle is calculated based on the data sent from the current position detection device 20. In the current position calculation processing, the latitude and longitude are calculated from the data input from the GPS receiver 25, and the latitude and longitude are stored in the RAM 4 as the current position data MP. The current position data MP is corrected by information on the current position input from the beacon receiving device 26 or the data transmitting / receiving device 27.

Further, a calculation process for specifying the position of the host vehicle is performed based on the absolute azimuth data ZD, the relative azimuth data SD, and the traveling distance data ML. The position of the own vehicle obtained by this calculation processing is compared with the map data in the external data GD, and correction is performed so that the current position on the map screen is accurately displayed. By this correction processing, even when a GPS signal cannot be received in a tunnel or the like, the current position of the own vehicle can be accurately obtained. Mileage data M
L is corrected by the acceleration data ma in order to take into account errors due to tire slip and the like.

In the destination setting process (step 51), a destination setting operation process and a target selection operation process are executed. In the destination setting operation process, a destination setting input screen is displayed on the display 33 by a destination registration operation by the user. The user can specify the destination from any of the address, telephone number, and name. When one genre is selected from a genre-specific menu such as sightseeing spots and various facilities, a plurality of destinations stored in the selected genre are displayed on the display 33 in the form of a list. Further, detailed guidance of each destination can be displayed. When the destination is determined, an operation for instructing the destination to be determined is performed, so that data relating to the determined destination is stored in the RAM 4 as registered destination data TP.

The target object selecting operation process is a process for setting a place to be stopped as a target when there is a place to be stopped during traveling to the destination. The data relating to the set target is stored in the RAM 4 as registered target data SP. Details of the target object selection operation processing will be described later.

The operations of the destination setting operation process and the target object selection operation process are performed by touch operation of the touch panel 34,
In addition to manual operation by the switch operation of the operation switch 40, operation by voice input can be performed by the voice recognition device 38. Switching between the manual operation and the voice input operation is performed by a changeover switch 41 provided on the operation switch 40. The switching operation between the destination setting operation process and the target selection operation process is also performed by the changeover switch 42 provided in the operation switch 40. The destination setting process (step 51) is jumped when a new destination setting operation or a new target object selecting operation is not performed.

In the route search process (step 52), the optimum route to the destination or the target is searched based on the registered destination data TP or the registered target data SP, the current position data MP, and the map data. The optimum route data MW is stored in the RAM 4. The optimal route is displayed as a bold red line on the map screen displayed on the display 33. In this route search process (step 52), if there is no change in the optimum route, the jump is performed.

In the guidance / display processing (step 53), the guidance is sounded from the speaker 13 or the guidance is displayed on the map screen so that the vehicle can travel according to the optimum route obtained in the route search processing (step 52). Displayed inside.

By repeating the above processing, the map screen displayed on the display 33 displays the optimum route to the destination or target registered by the user, and the current position and traveling direction of the own vehicle. Then, the current position is corrected in accordance with the progress of the vehicle, and when approaching a point requiring guidance such as an intersection or a junction, the guidance is notified by voice or display.

FIG. 6 shows the destination setting process (step 5).
It is a flowchart of a target object selection operation process (step 100) executed in 1). This process is started when a destination selection operation is instructed by operating the destination / target changeover switch 42. In addition, since the operation of selecting the target is performed during traveling, in consideration of driving safety, when the start of this process is instructed, the operation by voice input is automatically set to be possible. When the user operates the manual / voice changeover switch 41 to switch to the manual operation, the manual operation of the operation switch 40 enables the selection operation of the target. Also, this processing may be executed by performing voice input during travel guidance without operating the changeover switch.

The target object selection operation processing (step 100) is repeatedly executed in the same manner as the current position acquisition processing (step 50), the route search processing (step 52), and the guidance / display processing (step 53). If the vehicle approaches an intersection during the operation of selecting the target, the operation of selecting the target is interrupted by interrupt processing for only a few seconds, and guidance is provided by voice and display, and the map screen display and the optimal route and The display of the current position may be performed.

This target object selection operation processing (step 10)
0), a process of determining a search criterion for a target (Step 102), a process of determining a reference position of a range for searching for a target (Step 104), a process of searching for a target according to the search criterion (Step 106), A process of determining a priority order according to whether the searched target matches the user's desire (step 108), a process of displaying the target with the priority order (step 110), and a user selection The process of registering the one target (Step 112) is sequentially performed.

FIG. 7 shows a search criterion determination process (step 10).
It is a flowchart of 2). In the genre input process (step 120), first, the CPU 2
1, a command signal is sent to the speaker 1, and a question, for example, "What is the genre?" Note that, instead of sounding this question, the user may input a sound using a predetermined key of the touch panel 34 for voice input.

When there is a voice input from the voice recognition device 38 during a predetermined standby time, the CPU 2 converts the input voice data into code data by a predetermined operation. Then, the input code data is collated with the genre code number JC of the target object data file F16 in the external data GD, and a matching genre code number is obtained. The genre code number data JC that matches this voice input is stored in the RAM 4. For example, if the user wants to stop at a gas station on his way to the destination, he speaks "gas station" to store the genre code number JC of the gas station.

In the area input processing (step 122),
A command signal is sent from the CPU 2 to the voice processor 11 and “Please specify a search area” from the speaker 13.
Is generated. It should be noted that instead of the sound generation, a key input on the touch panel 34 may be used. Then, when there is a voice input from the voice recognition device 38 during the predetermined standby time, the voice data input by the CPU 2 is converted into the area designation data AS and stored in the RAM 4. Note that it is also possible to search for a target from all data without specifying an area in this way, but when assigning a priority to the searched targets as described above, a target closer to the reference position is selected. In many cases, processing is faster when an area is set in advance and search is performed.

If the scale of the map screen displayed during the navigation operation to the destination can be selected from two types, large and small, "wide area" and "details", for example, the user can say "Kouiki" The wide area designation data is set to the area designation data A so that the wide area display screen is used as a search area.
Stored as S. Further, when the user utters “show sai”, the detailed designation data is set to the area designation data A so that the detailed display screen is set as a search area.
Stored as S.

When three or more types of scale values on the map display screen can be selected, words for selecting the respective scales are determined, and when the user utters the words, the corresponding scale size data is displayed. It is stored as area designation data AS. Further, as described above, in addition to designating the entire map screen displayed at a predetermined scale as a search area, a voice input such as "radius 10 km" or "10 km square" is used to input a reference position described later. A range around a predetermined radius or a predetermined distance around KP can be used as a search area. In this case, the radius data or the side length data input by voice is stored as the area designation data AS. Further, by inputting a specific "city name" by voice, a range in which the city exists can be set as a search area.

The genre of the target and the search area are the main search criteria. In the next step 124, a sub-criteria peculiar to each genre of the target is input. In this process, a command signal is sent from the CPU 2 to the voice processor 11, and a voice is generated from the speaker 13 requesting the sub-criterion of the content corresponding to the specified genre code number JC. For example, if the designated genre is "gas station", a voice "What is the brand" is pronounced, and if the designated genre is "restaurant", a voice "What is the type of food" is pronounced.

When there is a voice input from the voice recognition device 38 during the predetermined standby time, the voice data input by the CPU 2 is converted into sub-reference data KS and stored in the RAM 4. The CPU 2 automatically selects a sub-criterion for an item that does not require a user's selection and stores it in the RAM 4. For example, sub-reference data KS representing “direction” or “parking” when the designated genre is parking is stored.
The sub-criterion is an item stored in the target information data MD of the target data file F16.

FIG. 8 shows a reference position determination process (step 10).
It is a flowchart of 4). First, a command signal is sent from the CPU 2 to the audio processor 11, and the speaker 1
From 3, a voice "Please designate a reference position" is pronounced. By the time the predetermined standby time elapses, the user displays the current position, the destination set before the start of traveling, a passing point such as an intersection or a building on the optimal route to the destination, and the display 33. A desired point is inputted by voice from the center of the displayed map screen and the points on a route such as an intersection or a building on the optimum route display currently displayed on the display 33.

When there is a user's voice input, the CP
The contents of the voice input data are analyzed by U2, and if a position distant from the current position is specified, the specified point is stored in the RAM 4 as reference position data KP (step 148). That is, when the destination is specified (step 134), the position data on the map of the registered destination data TP is read and stored as the reference destination data KP.

The designation of a passing point or a point on a route (steps 136 and 140) requires the user to input the name of an intersection or a building by voice.
2, a point having the same name data as the name data input by voice from the intersection data file F2 and the destination data file F6 is searched. Then, the position data of the obtained point is stored as reference position data KP. When the map center is specified (step 138)
Stores the position data of the center coordinates of the map screen displayed on the display 33 as the reference position data KP. In addition, you may enable it to be designated as a reference | standard position other than the above points.

When the current position is designated (step 13
2) Or, if there is no voice input within the predetermined standby time (step 130), an automatic setting process (step 130) is performed based on the information of the currently traveling road, using the current position or a position distant from the current position as a reference position. 142) is performed.
When the current position is set as the reference position by the automatic setting process (step 144), a process of correcting the reference position according to the traveling speed (step 146) is executed. Note that the input may be a key input on a touch panel or the like instead of voice.

FIG. 9 is a flow chart of the reference position automatic setting process (step 142). The current position data MP is read from the RAM 4 by the CPU 2 (step 150). And this current position data MP
The road data file F4 is searched based on the road information, and road information of the traveling road is obtained (step 152). this is,
It may be obtained from the current position information PI stored in the RAM 4. The obtained road information RD is stored in the RAM 4. The road information RD includes “01” if the running road is an expressway, and “1” if the traveling road is an elevated road or a tunnel.
0 is set, otherwise "00" is set.

Even if the current position is designated as the reference position by the user, if the currently traveling road is a highway,
Since it is impossible to go to a target other than the service area without getting down on the general road, the point where the user gets down on the general road is set as the reference position. That is, the interchange scheduled to descend on the optimal route to the destination is retrieved from the map data file F1, and the position of this interchange is stored in the RAM 4 as the reference position KP (step 156).

If the road on which the vehicle is currently traveling is an elevated road or a tunnel, it is not possible to make a right or left turn from the current position. Therefore, the next appearing intersection is searched from the intersection data file F2, and the position of this intersection is determined. It is stored as the reference position KP (step 160). And
If the road on which the vehicle is currently traveling is a general road and is neither an elevated road nor a tunnel, the current position MP is set as the reference position KP. This current position MP is further corrected by a reference position correction process (step 146). Is done.

FIG. 10 is a flowchart of the reference position correction processing (step 146). If the current position is selected as the reference position, it is impossible to make a sharp turn, so the reference position is corrected forward from the current position according to the traveling speed V. The current traveling speed V is detected by the CPU 2 from the clock signal from the clock 6 and the traveling distance data ML from the distance sensor 23 (step 17).
0). This may be traveling speed data output from a speedometer (not shown).

Then, the corrected distance AL corresponding to the detected traveling speed is obtained by the CPU 2 (step 172). The correction distance AL is determined by executing a predetermined calculation or by reading out from a memory table that stores the traveling speed V and the correction distance AL in advance. Next, the CPU 2 sends the current position data MP from the RAM 4 to the CPU 2.
Is read (step 174), and the position obtained by adding the correction distance AL forward of the current position is set as the reference position (step 176). The position after this correction is the reference position data K
It is stored in the RAM 4 as P.

FIG. 11 is a flowchart of the target search process (step 106). When the user specifies the radius of the search area or the length of the side in the search criterion determination processing (step 102) (step 180),
The CPU 2 reads the reference position data KP and the area designation data AS in the RAM 4 (step 182), and stores a circle of a radius centered on the reference position and voice-input by the user or a length voice-input by the user. A square having one side is assumed as a search area (step 184). The assumed search area KA is stored in the RAM 4 in the form of circle or square map coordinate data centered on the reference position KP.

The above-described search criterion determination processing (step 1)
If the user specifies "wide area" or "details" or the scale size in 02), the CPU 2 determines the contents of the area specification data AS (step 186),
The reference position data KP is read (step 18)
8). Then, a range of the map screen is assumed such that the center of the scaled map screen specified by the user matches the reference position KP, and the map coordinate data of this range is stored in the RAM 4 as the search area KA (step). 19
0).

Then, the genre code number data JC stored in the RAM 4 is read by the CPU 2 (step 192), and a genre corresponding to the genre code number JC is read from the target object data file F16. By searching for the target object coordinate data in the read genre, the search area K is searched.
A target existing in the map coordinates of A is searched (step 194). The name data MM, telephone number data MT, coordinate data MZ, and information data MD of each searched target are read out and stored in the RAM 4 as search target data KM.

FIG. 12 is a flowchart of the priority order determination processing (step 108). First, the current position data MP in the RAM 4 is read by the CPU 2 (step 200). Further, map coordinate data MZ of each search target is read from the search target data KM (step 202). Then, the reach distance TK from the current position to each search target is obtained by calculation (step 204). The reach distance TK may be a straight line distance obtained by the Pythagorean theorem, or a route to each search target (a shortest route or an optimal route in consideration of road information) obtained using the map data file F1. (Good). The obtained reach distance data TK to each search target is stored in the RAM 4.

Further, the sub-reference data KS of the RAM 4 is read by the CPU 2 (step 206), and the reaching distance TK is weighted according to the sub-reference data KS, and unnecessary search target data KM is deleted. (Step 208). Then, the priority order is determined according to the arrival distance TK weighted by the CPU 2 and the remaining search target data KM (step 210). The determined priority data UN is stored in the RAM 4. FIGS. 13 and 14 are flowcharts of processing (step 208) for changing the reach distance TK according to the sub-reference data KS. In this processing, the inside of the sub-reference data KS is determined by the CPU 2 (steps 220 and 25).
0, 260, ...). When data indicating “direction” is stored in the sub-reference data KS, the reference position data K
It is determined whether P is the current position (step 22).
2). If the current position is set to the reference position,
The angle between each search target and the host vehicle is calculated, and the direction of the search target in the traveling direction of the host vehicle is determined from the calculation result (step 224).

The angle between each search target and the host vehicle is calculated as follows. First, the CPU 2 causes the RAM 4
, The relative azimuth data θ1 is read out. The relative azimuth angle θ1 is an angle formed by the traveling direction of the host vehicle with respect to the north direction, and is represented by a value of 0 to 180 degrees counterclockwise and 0 to -180 degrees clockwise from the north direction. . Also, CPU
2, the current position data MP and the coordinate data MZ of each search target are read from the RAM 4, tan θ2 is calculated from the coordinate data MZ and the current position data MP, and tan θ2 of each search target is calculated from the calculated tan θ2. The relative azimuth θ2 with respect to the north direction is obtained. The relative azimuth θ2 of the search target is stored in the RAM 4.

Then, the direction θ of the searched target with respect to the traveling direction of the own vehicle is calculated by the CPU 2 by the calculation θ = θ2−θ1, and the target object direction data θ
Are stored in the RAM 4. Further, the target object direction θ is subjected to the following arithmetic processing when θ> 180 degrees: θ = θ−360 degrees When θ <−180 degrees: θ = 360 degrees + θ

From the result of the arithmetic processing, it is determined in which direction each search target exists with respect to the own vehicle. The determination of this direction is performed according to the following criteria. When 0 ≦ θ ≦ 90, “left front” When −90 ≦ θ <0, “right front” When 90 <θ ≦ 180, “left rear” when −180 ≦ θ <−90 Is "rear right" This determination result is added to each search target data KM in the form of a flag. For example, in the case of “left front”, “0”
In the case of "1", "front right", "10", and in the case of "back left" or "back right", "11" is added as a flag.

Next, if the direction of the target is "left forward" by the CPU 2, the reaching distance TK of the target is multiplied by "1", and a new reaching distance TK is set in the RAM 4.
Is updated and stored (step 230). If the direction of the target is “front right”, the reach distance TK of the target is
Is multiplied by “1.5”, and R is set as a new arrival distance TK.
The data is updated and stored in AM4 (step 234). Also, if the direction of the target is "left rear" or "right rear",
This arrival distance TK of the target is multiplied by “2” and updated and stored in the RAM 4 as a new arrival distance TK (step 238).

As described above, in the case of left-hand traffic, it is easy to stop in the order of "front left", "front right", and "rear".
Weighting is performed so that the arrival distance of the target that is most likely to drop in is reduced. The above direction calculation and weighting process (steps 222 to 238) are executed for all the search targets KM (step 240).

If the reference position is not the current position, the reference position data KP is read, and the above processing is executed using this reference position data KP instead of the current position. Thus, the direction of the target with respect to the position of the own vehicle at the reference position is obtained, and the reaching distance TK is weighted according to the direction of the target. The azimuth angle θ1 of the own vehicle at the reference position is an angle formed by the traveling direction of the optimal route at the reference position with respect to the north direction, and is calculated from the road data file F3.

When the designated genre is "parking", data corresponding to "parking" is stored in the sub reference KS. When the “parking” data is included when the sub-references KS are sequentially read out by the CPU 2, as shown in FIG.
Road information such as the data VD or the ATIS data AD is read, and “fullness information data” is picked up from the read information (step 252). This fullness information data is added to the search target data KM in the form of a flag. Then, the CPU 2 deletes the search target data KM to which the “fullness information data” is added. As a result, the full parking is not displayed as the target.

Next, the CPU 2 reads out the stored number data in each of the remaining search target data KM, and weights the reach distance TK of each search target according to the stored number. For example, the arrival distance TK is multiplied by "2" when the number of accommodated vehicles is less than 50, "1.5" when the number is 50 to 99, and "1" when the number is 100 or more. Thereby, weighting is performed such that the larger the number of accommodated vehicles, the smaller the reachable distance TK.

When the designated genre is "gas station" or "convenience store", the sub-reference KS
Contains "brand" data such as a distribution company and a chain store name. In this case, the CPU 2 compares the code data of the designated brand with the brand code of each of the remaining search target data KM, and erases the search target data KM of a brand different from the designated brand. You. That is,
Only the search target data KM of the specified brand is selectively extracted (step 262). Thus, the target other than the brand specified by the user is not displayed.

Further, although illustration and description are omitted, in addition to the above sub-criteria, for example, “upper and lower limits” such as directions, distances, and charges, and “city, city outside, accommodation capacity, business hours, etc.” Specified range "," selection designation "for specific landmarks," exclusion designation "for specific landmarks," fee "," position "near a pond or port," altitude "such as on a mountain or rooftop, "Depth" or "size", "attribute", "characteristics",
“Content”, “property” and the like can be used as the sub-criterion KS. When such a sub-reference KS is stored in the RAM 4, weighting of the arrival distance TK or elimination of unnecessary search target data KM is performed according to the sub-reference KS.

Further, in addition to the road information, the reach distance TK is weighted or unnecessary based on the information on the area where the target exists, the construction and traffic regulations, and the route information to the target such as the presence of a steep slope. For example, the search target data KM is deleted.

FIG. 15 shows the priority order determination processing (step 2).
It is a flowchart of 10). The CPU 2 reads the remaining search target data KM, and reads the reach distance data TK corresponding to the remaining search target KM (step 270). Then, the read reach distance data TK is arranged in ascending order (step 2).
72), priorities are determined in ascending order of the reach distance data TK (step 274). The priority data UN is
It is stored in the RAM 4 so as to correspond to each search target data KM.

FIG. 16 shows a target object display process (step 11).
It is a flowchart of 0). RAM by CPU2
Then, the search target data KM and the priority data UN remaining from Step 4 are read (Step 280). And
A command is sent from the CPU 2 to the image processor 9, and a scaled map screen designated around the reference position KP is read from the image memory 10.

The image data read from the image memory 10 is added with the mark, name, and priority of the search target, and the image data is displayed on the display 33 as a map screen (step 282). For example,
When “Soba shop” is specified as the genre of the target, as shown in FIG. 17, marks 63 to 62 of the target and numerals 63 to 65 indicating their names and priorities are displayed on the map screen. Is done.

FIG. 17 shows an example in which names and priorities are assigned only to the first to third targets. Further, when the user touches the “list” character on the screen with his / her finger, as shown in FIG.
The contents such as the name of M, the telephone number, the rank of store quality, etc. are displayed on the display 33 in the form of a list together with the priority (steps 284, 286). By touching the "return" character 67 on the screen with a finger, the display returns to the map screen display of FIG. This list can also be printed by the printer 35.

The user touches the target mark 60 to 62 in FIG. 17 or the priority (the leftmost number in FIG. 18) or name in FIG. 18 with a finger, and the position of the touched target is changed. Is displayed on the display 33 (steps 288 and 290). For example, if "Yamamotoya" in FIG. 17 or FIG. 18 is selected, the Yamamotoya mark 60 moves to the center of the screen as shown in FIG. 19, and the name 68 is displayed at the top of the screen. In this state,
If the character 67 of "return" is touched with a finger, it will return to the display screen of FIG. If the "set" character 72 is touched, this mountain bookstore is registered as a destination (step 2).
92, 112).

When the character 71 of "position change" is touched, the center cursor 6 displayed as a small circle surrounding the center of the screen is displayed.
9 and arrows 70 indicating eight directions are displayed around it (steps 294 and 296). This screen is used when the user wants to change another target from the target displayed in the center of the screen. When the user touches one of the arrows 70, the screen is scrolled in the direction of the touched arrow 70 (step 296).

The user performs the touch operation of the arrow 70 so that the mark of the desired target enters the center cursor 69 by scrolling the screen. For example, when the user selects the mark 73 in FIG. 19, the screen is scrolled so that the mark 73 falls within the center cursor 69 as shown in FIG. The new target selected is not limited to the genre specified by the user,
It can be freely selected from places, facilities, and the like displayed on the display 33. FIG. 20 shows a case where a restaurant is selected.

When the touch input of the arrow 70 has not been performed for a predetermined time, the display of the arrow 70 is erased, and a destination setting screen in which a character 71 of “position change” and a character 72 of “set” are displayed is displayed. Is done. In this state, the character of "position change" 7
When 2 is touched, the arrow 70 is displayed again, and the screen can be scrolled. Also, the character “set” 7
When 2 is touched, the target within the center cursor 69 is registered as a destination (steps 292 and 112).

FIG. 21 shows a target object registration process (step 11).
It is a flowchart of 2). In the state where the destination setting screen is displayed, when the character “set” 72 is touched, the CPU 2 sets the initial registered destination data TP set in the destination setting operation processing.
Is transferred and stored in a predetermined avoidance area MK in the RAM 4 (step 300). As a result, data on the original destination is stored.

Next, the coordinates of the center of the screen are read by the CPU 2 (step 302), and the data of the facility or the like having the coordinates is stored in the target object data file F16 in the RAM 4.
, And the corresponding target data is read out (step 304). Then, the target data is stored in the RAM 4 as new registered destination data TP (step 306).

When the registration of the target is completed, the target becomes a new destination, and the display screen of the display 33 returns to the map screen around the own vehicle to search for a route to the target (step 52) and provide guidance. Display processing (step 53)
Is performed. As a result, navigation to the target specified by the user is performed by displaying an optimal route to the target, intersection guidance, and the like. Then, after the user has stopped at the target, by performing a destination return operation,
The initially avoided destination data is set again in the destination data TP, and navigation to the original destination is resumed.

As described above, the navigation device according to this embodiment can select a target by a simple operation when a place to drop in is found on the way to the initially set destination. In addition, when there are a plurality of selected landmarks, the priority is automatically determined in order from the landmark that matches the user's desire, based on the criteria specified by the user or automatically set criteria, Since the priorities are displayed in a manner that is easy for the user to understand, the time for determining the target for the user is reduced, and safety during the operation of selecting the target is maintained.

Further, by inputting the information of the reference position or the search reference by voice input, input means such as a touch panel or a switch, a target desired by the user can be narrowed down in position or content. Can be. As a result, the processing can be speeded up, and a target that is more suitable for the user's wish can be searched. In addition, since operation by voice input is possible, even if a target object is selected during driving, safety of driving is not impaired.

Further, by changing the reference position according to predetermined conditions (steps 104, 142,
146), the reference position can be set according to the current driving situation. For example, when the speed of the vehicle is high, the reference position can be set further ahead, and when traveling on a highway, an interchange going down can be set as the reference position.
In addition, the reference position can be set to a position apart from the current position in addition to the current position (step 1).
04), it is possible to search for a target that matches the user's desire regarding the positional condition.

Further, the search criterion is not fixed, and can be changed according to the genre of the target, or the setting can be changed according to the user's preference (step 10).
2). As a result, it is possible to provide information on a target that more closely matches the user's wishes. Further, by assigning priorities to the targets based on geographical relationships such as distances and directions (step 208), it is possible to obtain information on the targets based on the ease of reaching the targets. Become. Further, by assigning priorities to the contents of the information on the target (steps 250 and 260), it is possible to obtain information on the target based on a criterion corresponding to the genre of the target.

Further, since the information of the target is stored for various items (the target data file F
16) Various search criteria can be set, and in response to various wishes of the user, it is possible to search for and display a target that best meets the wishes. In addition, by deciding the priority order of the target by taking in external information such as VICS and ATIS (steps 208 and 252), information on the fullness of the parking lot, the state of congestion on the road, or the information on the shop is obtained on-time. This makes it possible to obtain information on a target that better matches the user's wishes. In addition, by displaying the searched target with priority added (step 110), the user can immediately determine which target matches the user's desire most. it can.

The present invention is not limited to the above embodiments, but can be variously modified without departing from the spirit of the present invention. For example, the external recording medium for storing various data files shown in FIG. 2 may be a writable recording medium such as a floppy (registered trademark) disk.

The sub-reference data KS is not limited to the items stored in the target information data MD in the target data file F16, but allows the user to freely register predetermined items. The registered item is used as a sub-criterion KS in the target object selecting operation process (step 100).
May be selected.

Further, target object display processing (step 11)
In the case of 0), when the search target and the priority are displayed, the list screen as shown in FIG. 18 is displayed before the map screen as shown in FIG. 17, and the screen is switched to the map screen by a predetermined operation. It may be made to be possible. Also,
The display of the priority order during the display of the map screen as shown in FIG. 17 or the display of the list screen as shown in FIG. 18 may be any display as long as the display is easy for the user to understand. For example, the color, brightness,
Illuminance, size, shape can be changed according to priority,
The display may blink. This makes it easier for the user to obtain information visually, which is convenient particularly when operating while traveling. Of course, the priority may be pronounced by voice.

The reference position KP may be fixed at a predetermined point such as a current position or a destination, and may not be selected by the user, thereby reducing the processing amount. An inexpensive navigation device can be provided. Further, the present invention can be applied to a navigation device such as a vehicle other than an automobile, a ship, an aircraft, a helicopter, and the like, and a map used for navigation may be a marine chart, a seabed map, or the like in addition to a road map.

Further, the following can be shown as means for solving the problems of the conventional technology.

In the navigation apparatus, for a plurality of targets, a target storage means for storing information representing the target and information about the target in association with each other, and a target stored in the target storage means. A reference position storage means for storing information of a reference position for searching; a search reference information generating means for generating search reference information serving as a search reference when searching for a target stored in the target storage means; For a target according to the search criterion information generated from the search criterion information, a target information reading means for reading information representing the target from the target storage means or information on the target, and a reference from the reference position storage means. Reference position information reading means for reading position information, and information representing each target read by the target information reading means. Or priority order determining means for determining the priority order of each target from the relationship between the information on the target and the reference position information read by the reference position information reading means, and the priority order determining means determines the priority order of each target. Display means for displaying priority information.

The other navigation device further includes an input means such as a voice input device or a touch panel or a switch mounted on the display surface of the map display device, and the information regarding the operation performed by the user is provided by the input means. The information of the reference position or the search reference information is input by this input means.

In still another navigation device,
Further, there is provided a reference position information changing means for changing the reference position information read by the reference position information reading means in accordance with predetermined conditions such as the type of road being driven, the traveling speed, and road network information.

In still another navigation device,
Further, the above-mentioned search criteria information includes an upper limit and a lower limit, or a specified range, a selection designation of a specific target, or a designation of exclusion of a specific target, or a type of a target, or a property of a target, from outside. The data is input data, data input by a user through a manual operation, or data stored in advance.

In still another navigation device,
Further, the reference position is a current position or a position distant from the current position, and the reference position is fixed or can be modified and changed.

In still another navigation device,
Further, the relationship between the information of the target and the reference position information is as follows:
This is a geographical relationship such as a distance or a direction, or a relationship between contents of information on a target.

In still another navigation device,
Further, the information representing the target is the type of facility, building, or terrain, or the type or content of the target, or
The position, altitude, depth, size, attribute, characteristic, property, and the like of the target object.

In still another navigation device,
Further, the priority determining means further determines a priority based on route information to a target such as road information and area information input from outside via a communication medium.

In still another navigation device,
Further, the display means displays the priority order together with the mark of the searched target on the map screen of the map display device, displays the priority order in the form of a list on the map display device, or displays the priority order of the map display device. The priority is displayed by changing the color of the mark of the target displayed on the map screen according to the priority.

In still another navigation device,
Means for storing a plurality of landmarks in association with information representing the landmarks and information about the landmarks, means for setting reference position information when searching for the landmarks, and searching for the landmarks Means for generating search criterion information serving as a search criterion, means for reading out information representing the target or information on the target for a target corresponding to the generated search criterion information, Means for determining the priority of each target based on the relationship between the information representing each target or the information on the target and the set reference position information, and setting the targets in the order of the determined priority. Output means.

In still another navigation device,
Further, the landmarks are displayed in a list in the order of the determined priority.

In still another navigation device,
Means for storing a plurality of landmarks in association with information representing the landmarks and information about the landmarks, means for setting reference position information when searching for the landmarks, and searching for the landmarks Means for generating search criterion information serving as a search criterion, means for reading out information representing the target or information on the target for a target corresponding to the generated search criterion information, Means for determining the priority of each target based on the relationship between the information representing each target or the information on the target and the reference position information set above, and the information of the determined priority to the target. Means for outputting the corresponding data.

In the navigation method, for a plurality of landmarks, information representing the landmark and information relating to the landmark are stored in association with each other, and information on a reference position is set when searching for the landmark. Then, when searching for the target, search criterion information serving as a search criterion is generated, and for a target corresponding to the generated search criterion information, information representing the target or information on the target is read. The priority of each target is determined from the relationship between the read information indicating each target or the information on the target and the set reference position information, and the target is determined by the determined priority. Output in the order of

The target search device generates search reference information as a search criterion when searching for a plurality of targets, and according to the generated search criterion information, searches for each target to be searched. Means for determining priorities and outputting the respective targets in the order of the priorities.

In another target search device, further,
The plurality of landmarks correspond at least to information representing the landmark and information about the landmark, and the search criterion information is the search criterion information serving as a search criterion when searching for the landmark. And information on a reference position in searching for the target, and the priority order of each target is determined based on the information on each target and the reference position information, or both of the information. Is determined from the relationship

In still another target search device, means for storing target information for a plurality of targets, information on a reference position for searching for the target, and search reference information serving as a search reference are provided. Means for determining the priority of each target to be searched, and means for outputting the targets in the order of the determined priority.

[0111] Still another target search device generates search criterion information serving as a search criterion when searching for a plurality of targets, and according to the generated search criterion information, retrieves each target object. Means for determining the priority order and outputting information on the priority order.

In still another target search device, means for storing target information for a plurality of targets, information on a reference position for searching for the target, and search reference information serving as a search reference are provided. And means for determining the priority of each target object to be searched, and means for outputting information on the determined priority in association with the target.

In the target object search method, search target information serving as a search criterion is generated when searching for a plurality of target objects, and each target object to be searched is generated in accordance with the generated search reference information. The priority is determined, and the respective targets are output in the order of the priority.

In another target search method, for a plurality of targets, means for storing information of the target is provided with information on a reference position for searching for the target and a search criterion serving as a search reference. According to the information, the priority of each target to be searched is determined, and the targets are output in the order of the determined priority.

In still another target object search method, search target information serving as a search criterion is generated when searching for a plurality of target objects, and each target object to be searched is generated in accordance with the generated search reference information. To determine the priority,
The information of the priority is output.

In still another target search method, for a plurality of targets, a means for storing target information is provided with reference position information for searching for the target and a search reference serving as a search reference. Based on the reference information, the priority of each target to be searched is determined, and the information of the determined priority is output in association with the target.

A target storage means (external recording medium, RAM 4, target data file F16) for storing information representing the target and information on the target in association with each other for a plurality of targets, Reference position storage means (RAM4, step 104) for storing information on reference positions when searching for a target stored in the object storage means
And search reference information generating means (RAM4, steps 102, 18) for generating search reference information serving as a search reference when searching for a target stored in the target storage means.
2, 186, 192), and for a target according to the search criterion information generated from the search criterion information, target information reading means for reading information representing the target or information on the target from the target storage means. (Step 1
06) and reference position information reading means for reading reference position information from the reference position storage means (steps 200 and 2).
26) and a priority for determining the priority of each target from the relationship between the information on each target read by the target information reading means and the reference position information read by the reference position information reading means. Determining means (Step 1
08) and display means (step 110) for displaying information on the priority determined by the priority determination means.
The present invention searches for a target desired by a user based on search reference information serving as a reference for searching for a target, and further determines the priority of each target based on the relationship between the target information and the reference position information. It is determined, and the information of the determined priority is displayed. As a result, even when the vehicle is running, the user can select a target that meets his or her needs in a short time with reference to the priority. Therefore, it is possible to concentrate on driving.

The present invention is not limited to the above-described embodiment, but can be variously modified based on the gist of the present invention, and they are not excluded from the scope of the present invention.

[0119]

As described above in detail, according to the present invention, in the target search device, a means for storing information on a plurality of targets and a search reference position for searching for the target are set. Means for determining, a means for searching for the target based on the search reference position, and means for outputting information about the searched target, and descending from an expressway to a general road on an optimal route. An interchange is determined as the search reference position.

In this case, when the automobile is traveling on the highway, the target is searched using the interchange descending from the highway to the general road as the search reference position, so that the search results can be effectively used. .

In another target search device, means for storing information on a plurality of targets, means for determining a search reference position for searching for the target, and It has means for searching for a target, and means for outputting information about the searched target, and determines an intersection ahead of a current position as the search reference position.

In this case, if the vehicle is traveling on a place where the course cannot be changed, such as an elevated road or a tunnel, the target is searched using the intersection ahead of the current position as the search reference position. Can be effectively utilized.

In still another target search device, there are means for storing information on a plurality of targets, means for determining a search reference position for searching for the target, and a method for determining a search reference position based on the search reference position. Means for searching for the landmark;
Means for outputting information on the searched target object, and a position ahead of a current position is determined as the search reference position according to a traveling speed.

In this case, when the traveling speed of the automobile is high,
Since the target is searched using the position ahead of the current position as the search reference position according to the traveling speed, the result of the search can be effectively used.

[Brief description of the drawings]

FIG. 1 is an overall circuit diagram of a navigation device.

FIG. 2 is a diagram showing a data file stored in an external storage medium.

FIG. 3 is a diagram showing the contents of a target object data file F16.

FIG. 4 is a diagram showing data stored in a RAM 4.

FIG. 5 is a diagram showing a flowchart of an overall process.

FIG. 6 is a diagram illustrating a flowchart of a target object selection operation process.

FIG. 7 is a diagram showing a flowchart of a search criterion determination process.

FIG. 8 is a diagram illustrating a flowchart of a reference position determination process.

FIG. 9 is a diagram illustrating a flowchart of a reference position automatic setting process.

FIG. 10 is a diagram showing a flowchart of a reference position correction process.

FIG. 11 is a diagram showing a flowchart of a target object search process.

FIG. 12 is a diagram showing a flowchart of a priority order determination process.

FIG. 13 is a diagram showing a part of a flowchart of a reach distance changing process.

FIG. 14 is a diagram showing the remaining part of the flowchart of the reach distance changing process.

FIG. 15 is a diagram showing a flowchart of a priority order determination process.

FIG. 16 is a diagram showing a flowchart of a target object display process.

FIG. 17 is a diagram showing an example in which a target is displayed on a map screen of a display 33.

FIG. 18 is a diagram showing an example in which a list of target objects is displayed on a display 33.

FIG. 19 is a diagram showing an example of an object setting screen displayed on a display 33.

FIG. 20 is a diagram illustrating an example of a screen of the display 33 during a position change operation.

FIG. 21 is a diagram showing a flowchart of a target object registration process.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Central processing unit 2 ... CPU 3, 5 ... ROM, 4 ... RAM 9 ... Image processor 10 ... Image memory 11 ... Audio processor 13 ... Speaker 20 ... Current position detection device 21 ... Absolute direction sensor 22 ... Relative direction sensor 23 ... Distance sensor 25 GPS receiving device 26 Beacon receiving device 27 Data transmitting and receiving device 30 Data communication device 31 Data transmitting and receiving unit 32 Telephone transmitting unit 33 Display 34 Touch panel 36 Recording card reader 37 CD-ROM driver 38 voice recognition device 39 microphone 40 operation switch 41 manual / voice changeover switch 42 destination / target changeover switch

 ──────────────────────────────────────────────────の Continued on the front page F-term (reference) 2C032 HB02 HB05 HB06 HB08 HB15 HB22 HB23 HB24 HC15 HC16 HC21 HC24 HD03 HD16 2F029 AA02 AB01 AB07 AB13 AC01 AC02 AC06 AC09 AC14 AC18 5H180 AA01 BB04 BB05 BB12 BB13 FF13 BB12 BB13 FF12 FF27 FF33 FF36

Claims (3)

[Claims] 1. A means for storing information relating to a plurality of landmarks; a means for determining a search reference position for searching for the landmark; and (D) means for outputting information on the searched target object,
(E) An object search device, wherein an interchange on an optimal route from an expressway to a general road is determined as the search reference position. (A) means for storing information on a plurality of targets; (b) means for determining a search reference position for searching for the target; and (c) reference to the search reference position. (D) means for outputting information on the searched target object,
(E) An object search device which determines an intersection ahead of a current position as the search reference position. 3. A means for storing information on a plurality of targets, (b) means for determining a search reference position for searching for the target, and (c) a reference to the search reference position. (D) means for outputting information on the searched target object,
(E) A target search device, wherein a position ahead of a current position is determined as the search reference position according to a traveling speed.