JP2006275958A - Navigation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To register a spot that can be an object for spot retrieval without bothering the user. <P>SOLUTION: With this navigation device, the stoppage spot of a vehicle is registered, when stoppage of a vehicle engine is detected; and the registered spot is displayed, when a request of spot retrieval is accepted. The stoppage spot may be registered, when the engine is stopped as long as a prescribed time or longer. When an approached spot has already been registered, each spot is deleted in the order of oldness of the registered date and the time. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a navigation device, and more particularly, to a point search technique for an in-vehicle navigation device.

  Non-Patent Document 1 describes an in-vehicle navigation device that can search a point set as a destination from points registered in advance.

Japan Patent Office, Standard Technology Collection-Car navigation device user interface, main classification: 2-A-5 Registration location / history input

  However, in the technique of Non-Patent Document 1, a user must register a point that can be set as a destination.

  An object of the present invention is to provide a technique for registering a point that can be a target of a point search without bothering a user.

  In order to solve the above problems, the navigation device of the present invention detects the stop of the engine of the moving body and registers the point.

For example, the present invention is a navigation device mounted on a moving body,
Engine stop detection means for detecting stop of the engine of the moving body;
If the engine stop detection means detects an engine stop, a point registration means for registering the stop point of the moving body;
A means for receiving a point search request;
And a display means for displaying the spot registered by the spot registration means when a request for spot search is received.

  An embodiment of the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic configuration diagram of an in-vehicle navigation device to which an embodiment of the present invention is applied.

  As shown in the figure, the in-vehicle navigation device of the present embodiment includes an arithmetic processing unit 1, a display 2, a map data storage device 3, a voice input / output device 4, an input device 5, a wheel speed sensor 6, It has a geomagnetic sensor 7, a gyro sensor 8, and a GPS (Ground Positioning System) receiver 9.

  The arithmetic processing unit 1 is a central unit that performs various processes. For example, the current location is detected based on information output from the various sensors 6 to 8 and the GPS receiver 9, and the map data 300 necessary for display is read from the map data storage device 3 based on the obtained current location information. . Further, the read map data 300 is developed as a graphic, and a mark indicating the current location is superimposed on the displayed map 2 and displayed on the display 2, or the map data 310 stored in the map data storage device 3 is used to instruct the user. The optimum route (recommended route) connecting the destination and the departure point (for example, the current location) is searched, and the user is guided using the voice input / output device 4 or the display 2.

  The display 2 is a unit that displays graphics information generated by the arithmetic processing unit 1, and is configured by a CRT, a liquid crystal display, or the like. The signal S1 between the arithmetic processing unit 1 and the display 2 is generally connected by an RGB signal or an NTSC (National Television System Committee) signal.

  The map data storage device 3 is composed of a storage medium such as a CD-ROM, DVD-ROM, HDD, or IC card. In this storage medium, map data 300 is stored.

  FIG. 2 is a diagram illustrating a configuration example of the map data 300 stored in the map data storage device 3. As shown in the figure, map data 300 is stored for each mesh region obtained by dividing the map into a plurality of parts. The map data 300 includes link data 310, representative point data 320, etc. for each mesh area identification code (mesh ID) 301.

The link data 310 includes a link ID, coordinate information of two nodes (start node and end node) constituting the link, road type information including the link, link length information indicating the link length, and connection to the two nodes. The representative point data 320 including the link ID (connection link ID) of the link to be included includes information on a representative point on the map. In this embodiment, as shown in FIG. 9, when a registered point is displayed in a point search, “near **” is displayed in order to easily understand the position of the point. When displaying “near **”, the name 322 of the nearest representative point of the point is used. The representative point may be a department store, a stadium, a park, a road, a construction such as a region, or a natural thing such as a mountain, forest, or river.

  The representative point data 320 includes a name 322, a coordinate position 323, and other information 324 for each code (point ID) 321 that identifies the representative point. When the point is a facility, the other information 324 is various information unique to the facility, such as an address, a telephone number, and business hours.

  Returning to FIG. 1, the description will be continued. The voice input / output device 4 converts the message to the user generated by the arithmetic processing unit 1 into a voice signal and outputs it, and recognizes the voice uttered by the user and transfers the content to the arithmetic processing unit 1.

  The input device 5 is a unit that receives an instruction from a user, and includes a hardware switch such as a scroll key and a scale change key, a joystick, a touch panel pasted on a display, and the like.

  The sensors 6 to 8 and the GPS receiver 9 are used for detecting the current location (own vehicle position) by the vehicle-mounted navigation device. The wheel speed sensor 6 measures the distance from the product of the wheel circumference and the measured number of rotations of the wheel, and further measures the angle at which the moving body is bent from the difference in the number of rotations of the paired wheels. The geomagnetic sensor 7 detects the magnetic field held by the earth and detects the direction in which the moving body is facing. The gyro 8 is configured by an optical fiber gyro, a vibration gyro, or the like, and detects an angle at which the moving body rotates. The GPS receiver 9 receives a signal from a GPS satellite and measures the distance between the mobile body and the GPS satellite and the rate of change of the distance with respect to three or more satellites, so that the current location, travel direction, and travel direction of the mobile body Measure.

  FIG. 3 is a diagram illustrating a hardware configuration of the arithmetic processing unit 1.

  As illustrated, the arithmetic processing unit 1 has a configuration in which devices are connected by a bus 32. The arithmetic processing unit 1 includes a CPU (Central Processing Unit) 21 that executes various processes such as numerical calculation and control of each device, and a RAM (Random Access) that stores map data and arithmetic data read from the map data storage device 3. Memory) 22, ROM (Read Only Memory) 23 for storing programs and data, DMA (Direct Memory Access) 24 for executing data transfer between the memories and between the memory and each device, and graphics drawing In addition, a drawing controller 25 that performs display control, a video random access memory (VRAM) 26 that stores graphics image data, a color palette 27 that converts image data into RGB signals, and an A / A that converts analog signals into digital signals. D converter 28 and SCI (Serial Communicati) which converts serial signals into parallel signals synchronized with the bus on Interface) 29, a PIO (Parallel Input / Output) 30 that puts a parallel signal on the bus in synchronization with the bus, and a counter 31 that integrates the pulse signal.

  FIG. 4 is a diagram illustrating a functional configuration of the arithmetic processing unit 1.

  As illustrated, the arithmetic processing unit 1 includes a user operation analysis unit 41, a route search unit 42, a route guidance unit 43, a current position calculation unit 44, a display processing unit 45, an information storage unit 46, a point A registration unit 47 and a point search unit 48 are included.

  The user operation analysis unit 41 receives a request from the user input by the input device 5, analyzes the request content, and controls each unit of the arithmetic processing unit 1 so that processing corresponding to the request content is executed. To do.

  The current position calculation unit 44 uses distance data and angle data obtained as a result of integrating the distance pulse data S5 measured by the wheel speed sensor 6 and the angular acceleration data S7 measured by the gyro 8, respectively. The current position (X ′, Y ′), which is the position after the vehicle travels, is periodically calculated from the initial position (X, Y), and the current position is obtained by map match processing.

  The route search unit 42 uses the Dijkstra method or the like to reach the destination at a low cost (for example, travel time, travel distance, etc.) among the routes connecting the two specified points (departure location (current location), destination). The reachable route is searched from the map data.

  The route guidance unit 43 compares the information on the recommended route searched by the route search unit 42 with the information on the current location, and determines whether the vehicle should go straight or turn right or left before passing the intersection or the like. It is used to notify the user by voice, or the direction to be advanced is displayed on the map displayed on the display 2 to notify the user of the recommended route.

  The display processing unit 45 generates a drawing command so that the requested video is displayed on the display 2 and outputs the drawing command to the display 2.

  The point registration unit 47 causes the information storage unit 46 to store the point requested to be registered by the user via the input device 5 as a point to be searched for the point. Further, as will be described later, the current position when the engine is stopped is stored in the information storage unit 46 as a point to be searched for points.

  The point search unit 48 searches for the point requested by the user from the points registered in the information storage unit 46.

  FIG. 5 is a configuration diagram of the registration spot data 330 stored in the information storage unit 46. The registered spot data 330 includes information related to a spot that is a spot search target. As shown in the figure, the registration point data 330 includes a point ID 331, a coordinate position 332, a moving body (vehicle) engine stop date and time 333, and the nearest representative point 334 in each record 335. The generation process of the registration spot data 330 will be described later.

  [Description of Operation] Next, the operation of the vehicle-mounted navigation device having the above-described configuration will be described.

  6 and 7 are flowcharts of the point registration process of the in-vehicle navigation device of this embodiment.

  First, the processing when the engine is stopped will be described with reference to FIG. This flow is started during engine operation.

  The point registration unit 47 monitors whether the engine has stopped (S102). The vehicle-mounted navigation device is connected to a device that transmits a signal indicating the operation of the vehicle engine. The point search unit 47 detects whether or not the engine is stopped from the signal of this device.

  When the point search unit 47 detects that the engine has stopped (Yes in S102), it determines from the output from the current position calculation unit 44 whether the current position is on the road (S104).

  If the current position is on the road (Yes in S104), the point registration unit 47 ends the process. This is because a point on the road is unlikely to be a destination.

  When the current position is not on the road (No in S104), the point registration unit 47 uses the coordinate position 323 of the representative point data to extract the nearest representative point (the shortest distance) from the current location (S106). .

  Next, the point registration unit 47 temporarily registers the current position, the engine stop date and time, and the nearest representative point in the information storage unit 46. Then, the process ends.

  Next, the process at the time of engine start is demonstrated using FIG.

  First, the point registration unit 47 determines whether or not a predetermined time has elapsed since the previous engine stop (S112). If the predetermined time has not elapsed (No in S112), the point registration unit 47 ends the process. That is, the process ends without registering the engine stop position as a point search target. This is to prevent the point from being registered when it is temporarily stopped.

  On the other hand, when the predetermined time has elapsed since the previous engine stop (Yes in S112), the point registration unit 47 checks whether or not the number of similar points already registered in the registered point data 330 exceeds the predetermined number ( S114). Specifically, the point registration unit 47 includes a record including the “nearest representative point” that is the same as the “nearest representative point” of the point temporarily registered in the information storage unit 46 from the registered point data 330. 335 is extracted. Furthermore, the number of extracted records is examined. And it is investigated whether the number is less than a predetermined number (for example, 10).

  When the extracted records are not less than the predetermined number (No in S114), the point registration unit 47 deletes the record with the oldest stop date and time 333 among the extracted records. Then, the process proceeds to S118.

  On the other hand, when the number of extracted records is less than the predetermined number (Yes in S114), the point registration unit 47 proceeds to the process of S118 as it is.

  Next, in S <b> 118, the spot registration unit 47 adds a record with a new spot ID to the registration spot data 330. Furthermore, the position 332, the engine stop date and time 333, and the nearest representative point 334 are stored in the record based on the information of the temporarily registered point (S118). Then, the point registration process ends.

  The point registration process has been described above with reference to FIGS. 6 and 7.

  In this way, when the engine stops and a predetermined condition is satisfied, the stop points of the vehicle are successively registered as point search targets.

  Next, point search will be described. A point search is performed when setting a destination in route search. At this time, the point search unit 48 displays a destination setting screen on the display screen 600 via the display processing unit 45 as shown in FIG. Then, the destination setting method options 601 to 603 are displayed. Examples of destination search methods include point search 601, facility search 602, telephone number search 603, and the like.

  A case will be described in which a point search 601 is selected by the user via the input device 5 on this display screen.

  When the point search unit 48 accepts the request for the point search, the engine stop point list 611 (the engine stop date and time 612 and the representative nearest point 613 are displayed on the display screen 610 via the display processing unit 45 as shown in FIG. ) Is displayed. Specifically, the point search unit 48 extracts records from the registered point data 330 stored in the information storage unit 46 in order from the newest stop date and time 333. Then, the engine stop date / time 333 and the nearest representative point 334 included in the record are displayed as a point list 611.

  When there are a plurality of records having the same “nearest representative point” 334, the record with the newest registration date (engine stop date 333) may be selected and displayed in the engine stop point list 611.

  When any point is selected from the engine stop point list 611 via the input device 5, the point search unit 48 is selected on the map 622 of the display screen 620 as shown in FIG. The point 623 is displayed. At this time, the engine stop date and time and a representative point 624 in the vicinity may be displayed.

  When the point search unit 48 receives a confirmation request to set as a destination via the input device 5, the point search unit 48 sets the selected point as the destination. Then, the route search unit 42 is requested to start the route search.

  The embodiment of the present invention has been described above.

  According to the above embodiment, the point where the engine is stopped is automatically registered as a point search target for destination setting or the like. Therefore, a point that can be set as a destination is registered without bothering the user.

  Further, the stop point is registered when a predetermined time elapses after the engine is stopped before starting. Therefore, when it stops temporarily, it is not registered and it can prevent that the place which is not a destination is registered.

  Further, when the stop point is the same as the already registered point and the “nearest representative point”, that is, when the stop point is approaching the already registered point, the stop point is not registered. Therefore, it is possible to prevent an approaching point from being registered excessively.

  The present invention is not limited to the above embodiment, and various modifications can be made.

  For example, in the above embodiment, the stop point is not registered when the engine stop time is less than a predetermined time. Such a predetermined time may be set by the user. Specifically, the user operation analysis unit 41 receives the “predetermined time” from the user via the input device 5. Using the “predetermined time” received in this way, the point registration unit 47 determines whether or not to register the point in S112. In this way, it is possible to respond in detail to the needs of the user.

  Moreover, you may judge whether it is a point which approached by whether it exists in the predetermined distance with the point already registered. Specifically, the point registration unit 47 obtains the distance between the point where the engine has stopped and the point already registered. If this distance is within a predetermined distance (for example, 500 m), the oldest registered date is deleted from the already registered points. Further, the current stop point is registered, and the registration point data 330 is updated.

  In this way, it is possible to prevent an approaching point from being registered excessively.

  In the above embodiment, it is indirectly determined that the destination has been reached by stopping the engine. However, the present invention is not limited to this, and the point may be registered by indirectly determining that the destination has been reached by another method. For example, in response to the output from a sensor that detects the insertion or removal of a key or a sensor that detects the opening or closing of a door, the current position of the vehicle when the key is removed or the door is opened or closed is registered as a stop point. May be.

  In the above embodiment, an example in which the present invention is applied to a vehicle-mounted navigation device has been described. However, the present invention can also be applied to a navigation device other than a vehicle-mounted navigation device.

FIG. 1 is a schematic configuration diagram of an in-vehicle navigation device to which an embodiment of the present invention is applied. FIG. 2 is a diagram illustrating a configuration example of map data stored in the map data storage device 3. FIG. 3 is a diagram illustrating a hardware configuration of the arithmetic processing unit 1. FIG. 4 is a diagram illustrating a functional configuration of the arithmetic processing unit 1. FIG. 5 is a diagram illustrating a configuration example of registration point data. FIG. 6 is a flowchart of the point registration process (when the engine is stopped). FIG. 7 is a flowchart of the point registration process (when the engine is started). FIG. 8 is an example of a display screen in destination setting. FIG. 9 is an example of a display screen for point search in destination setting. FIG. 10 is a display example of the searched points.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Arithmetic processing part, 2 ... Display, 3 ... Map data storage device, 4 ... Voice input / output device, 5 ... Input device, 6 ... Wheel speed sensor, 7 ... Geomagnetic sensor, 8 ... gyro, 9 ... GPS receiver, 21 ... CPU, 22 ... RAM, 23 ... ROM, 24 ... DMA, 25 ... drawing controller, 26 ... VRAM, 27 ... color palette, 28 ... A / D converter, 29 ... SCI, 30 ... PIO, 31 ... counter, 41 ... user operation analysis unit, 42 ··· Route search unit, 43 ··· Route guidance unit, 44 ··· Current position calculation unit, ······················································ ..Point search part

Claims (7)

A navigation device mounted on a moving body,
Engine stop detection means for detecting stop of the engine of the moving body;
If the engine stop detection means detects an engine stop, a point registration means for registering the stop point of the moving body;
A means for receiving a point search request;
A navigation device, comprising: a display unit that displays a point registered by the point registration unit when a point search request is received. The navigation device according to claim 1,
The point registration means
A navigation device, wherein the stop point is registered when the engine is stopped for a predetermined time or more. The navigation device according to claim 1,
Having stop time setting means for receiving the engine stop time,
The point registration means
A navigation device, wherein the stop point is registered when the engine has stopped for a time longer than the time received by the stop time setting means. The navigation device according to claim 1,
The point registration means
A navigation device, wherein registration of the stop point is excluded when the stop point is on a road. The navigation device according to claim 1,
Means for storing representative points on the map;
The point registration means
If the nearest representative point of the already registered point is the same as the nearest representative point of the stop point,
A navigation device, wherein the already registered point is deleted and the stop point is registered. The navigation device according to claim 1,
Means for storing representative points on the map;
The point registration means
When the nearest representative point of the point among the already registered points is the same as the nearest representative point of the stop point, and the number exceeds the predetermined number,
A navigation device characterized in that among the already registered points, the oldest registered date is deleted and the stop point is registered.
Register information about the stop point The navigation device according to claim 1,
The point registration means
When a point within a predetermined distance from the stop point is already registered,
A navigation device, wherein the already registered point is deleted and the stop point is registered.

Images