JP2009042083A - Navigation device and its guidance display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To save time and effort of a user in the setting of a via-point or a destination. <P>SOLUTION: This navigation device has a function of calculating the current position, and is provided with a storage means for storing information on tourist destinations including tourist destination areas and recommended spots existing in the tourist destinations; a destination designation accepting means for accepting a designation of a destination; a recommended spot search means for searching a recommended spot existing inside a tourist destination spot where the current position exists, by using the information on tourist destinations, when the current position exists in a tourist destination area, and when the destination whose designation is accepted by the destination designation accepting means is a spot (user's own house, for example) outside the tourist destination area where the current position exists; and a display means for displaying the recommended spot searched by the recommended spot search means. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

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

  There is an in-vehicle navigation device equipped with a point search mode for setting a destination or a waypoint. In the point search mode, it accepts designation of a specific genre, searches for points belonging to the received genre, displays a list of searched points for the user, and makes it possible to select any point as a destination or waypoint Yes.

  For example, when a user is in a sightseeing spot, he / she wants to drop in at a souvenir shop before returning home. The vehicle-mounted navigation device shifts to the point search mode in accordance with the user's instruction, and when “souvenir shop” is designated as the genre, it searches for and displays a list of souvenir shops around the current position. Then, a souvenir shop that the user wants to drop in is selected and set as a transit point or destination.

JP 2007-47801 A

  However, in the prior art, in order to display a search target point, the user must always perform a request for switching to the point search mode and an input operation for specifying a genre. This is troublesome and inconvenient.

  Accordingly, an object of the present invention is to save the user's trouble in setting a waypoint or a destination.

  In order to solve the above-described problems, the navigation device of the present invention searches for and displays recommended nearby stop points based on the user's intention to escape from the sightseeing spot.

  For example, the first aspect of the present invention is a navigation device having a function of calculating the current position, and stores a tourist spot information including a tourist spot area and recommended points existing in the tourist spot area. Means, a destination designation accepting means for accepting designation of a destination, and the current location is within the tourist area, and a destination for which designation is accepted by the destination designation accepting means is present If the point is outside the sightseeing spot area, using the sightseeing spot information, a recommended spot searching means for searching for a recommended spot existing in the sightseeing spot area where the current position exists, and the recommended spot search Display means for displaying the recommended points retrieved by the means.

  The second aspect of the present invention is a navigation device having a function of calculating a current position, and stores a tourist spot information including a tourist spot area and a recommended spot existing in the tourist spot area. Means, destination designation accepting means for accepting designation of a destination, and a home point where the current location is in the tourist area and the destination for which designation is accepted by the destination designation accepting means is predetermined The recommended spot search means for searching for a recommended spot in the tourist spot area where the current position exists, and the recommended spot searched by the recommended spot search means. Display means for displaying the point.

  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 100 to which an embodiment of the present invention is applied. As shown in the figure, the in-vehicle navigation device 100 includes an arithmetic processing unit 1, a display 2, a storage device 3, a voice input / output device 4, an input device 5, a wheel speed sensor 6, a gyro sensor 7, A GPS (Global Positioning System) receiving device 8 and a communication device 9 are provided.

  The arithmetic processing unit 1 is a central unit that performs various processes. For example, the present location is detected based on information output from the various sensors 6 and 7 and the GPS receiver 8. Further, map data necessary for display is read out from the storage device 3 based on the obtained current location information. Further, the read map data is developed in graphics, and a mark indicating the current location is superimposed on the map data and displayed on the display 2. In addition, the map data stored in the storage device 3 is used to search for an optimum route (recommended route) that connects the starting point (current location) instructed by the user and the destination. Further, the user is guided using the voice input / output device 4 and the display 2.

  The display 2 is a unit that displays graphics information generated by the arithmetic processing unit 1. The display 2 is composed of a CRT, a liquid crystal display, or the like.

  The storage device 3 includes a storage medium such as a CD-ROM, DVD-ROM, HDD, or IC card. In this storage medium, map data 310 and a sightseeing spot 330 are stored.

  FIG. 2 is a diagram showing the configuration of the map data 310. The map data 310 includes, for each mesh identification code (mesh ID) 311 which is a partitioned area on the map, link data 320 of each link constituting a road included in the mesh area.

  The link data 320 includes, for each link ID 321, coordinate information 322 of two nodes (start node and end node) constituting the link, road type information 323 including the link, link length information 324 indicating the link length, link The travel time 325 includes a link ID (connection link ID) 326 of a link connected to each of the two nodes. Here, by distinguishing the start node and the end node for the two nodes constituting the link, the upward direction and the downward direction of the same road are managed as different links. The link travel time 325 may be a link travel time associated with each condition such as date and weather.

  FIG. 3 is a diagram illustrating a configuration of the sightseeing spot data 330. The sightseeing spot data 330 includes information on sightseeing spots on the map. Specifically, in the tourist spot data 330, for each code (tourist spot area ID) 331 for identifying a tourist spot area, a coordinate position (range is defined) 332 on the map of the tourist spot area, The name (recommended area name) 333 of the sightseeing spot area is stored. Further, the recommended sightseeing spot data 330 stores recommended spot data 334 that is information on recommended spots existing in the tourist spot area for each tourist spot area ID 331. In the recommended point data 334, for each code (recommended point ID) 335 for identifying the recommended point, the coordinate position 336 on the map of the recommended point and the name of the recommended point (recommended point) Name) 337, standard stay time 338 of the recommended point, and detailed information 339 are stored. The standard staying time 338 is an average time statistically determined from data collected by a questionnaire or the like for each recommended point. The detailed information 339 includes the address of the recommended point, business hours, sales items handled, and the like. When the recommended point is a souvenir shop, the sales item is, for example, a special product of the sightseeing spot.

  Returning to FIG. 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. Also, a process of recognizing the voice uttered by the user and transferring the contents to the arithmetic processing unit 1 is performed.

  The input device 5 is a unit that receives instructions from the user. The input device 5 includes a hard 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 and 7 and the GPS receiver 8 are used for detecting the current location (vehicle position) by the vehicle-mounted navigation device 100. 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 gyro 7 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 8 receives a signal from a GPS satellite and measures the distance between the moving body and the GPS satellite and the rate of change of the distance with respect to three or more satellites, thereby moving the current position, traveling speed, and traveling of the moving body. Measure orientation.

  The communication device 9 is a device for communicating with an external information distribution center that distributes traffic information, regional information, and the like.

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

  As illustrated, the arithmetic processing unit 1 includes a user operation analysis unit 41, a current position calculation unit 42, a route search unit 43, a route guidance unit 45, a recommended spot search unit 46, and a display processing unit 47. Have.

  The user operation analysis unit 41 receives a request from the user input to 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. For example, when the user requests a search for a recommended route, the display processing unit 45 is requested to display a map on the display 2 in order to set a destination. Further, it requests the route search unit 42 to calculate a route from the current location (departure location) to the destination.

  The current position calculation unit 42 uses distance data and angle data obtained as a result of integrating distance pulse data measured by the wheel speed sensor 6 and angular acceleration data measured by the gyro 7, and integrates the data on the time axis. As a result, the present location (X ′, Y ′), which is the position after the vehicle travels, is periodically calculated from the initial position (X, Y). Further, by performing map matching processing using the calculation result, the current location is matched with the road (link) having the highest shape correlation. Further, the current position is corrected periodically using the output of the GPS receiver 8.

  The route search unit 43 uses a Dijkstra method or the like to search for a route that minimizes the cost (for example, distance and travel time) of a route connecting two designated points (current location, destination).

  The route guidance unit 45 performs route guidance using the route searched by the route search unit 43. For example, the information on the route is compared with the information on the current location, and the voice input / output device 4 is used to inform the user by voice whether the vehicle should go straight before passing an intersection or the like. Further, the route guiding unit 45 displays the direction to travel on the map displayed on the display 2 and notifies the user of the recommended route.

  The recommended point search unit 46 performs a process of searching for recommended points set as destinations or waypoints. For example, referring to the sightseeing spot data 330, the sightseeing spot area where the current position exists is specified, and the recommended spot in the specified sightseeing spot area is searched.

  The display processing unit 47 generates a drawing command for information to be displayed on the display 2 and transmits the drawing command to the display 2.

  As shown in FIG. 1, the arithmetic processing unit 1 includes a CPU (Central Processing Unit) 11 that executes various processes such as numerical calculation and control of each device, and map data and arithmetic data read from the storage device 3. This is achieved by a computer system including a RAM (Random Access Memory) 12 that stores information, a ROM (Read Only Memory) 13 that stores programs and data, and an interface 14 that exchanges information with the outside. Each functional unit of the arithmetic processing unit 1 described above is achieved by executing a program loaded into the memory by the CPU.

  [Description of Operation] Next, the operation of the in-vehicle navigation device 100 having the above-described configuration will be described.

  FIG. 5 is a flowchart showing the flow of route search processing. FIG. 6 is a transition diagram of the display screen 200 of the display 2 during such processing.

  This flow is started when the user operation analysis unit 41 receives a search request for a route from the user to the home via the input device 5 (S101).

  The user operation analysis unit 41 normally displays a map 201 around the current position and a car mark 202 indicating the current position on the display screen 200 as shown in FIG. Waiting for instructions. When the destination setting request is received from the user, an instruction as to whether or not to select from the registered locations is received. When the user is instructed to select from the registered locations, the home is selected as an option for the registered location. indicate. It is assumed that when a home is selected as a destination, a search request for a route to the home is accepted.

  When receiving a search request for a route to the home, the user operation analysis unit 41 instructs the recommended point search unit 46 to perform a recommended point search process.

  In response to this, the recommended spot search unit 46 first determines whether or not the current position calculated by the current position calculation unit 42 exists in any one of the sightseeing spot areas (S102). Specifically, the recommended spot search unit 46 refers to the tourist spot data 330 and the current location of any tourist spot area identified by the coordinate position (range on the map) 332 of the tourist spot area. It is determined whether it is included.

  When the current position does not exist in any sightseeing spot area (No in S102), the recommended spot search unit 46 performs the processing after S107 in the route search unit 43 without searching for a recommended spot. Instruct. In response to this, the route search unit 43 searches for the route to the home, displays it on the display 2 via the display processing unit 47 (S107), and ends the route search processing.

  On the other hand, when the current position exists in any one of the sightseeing spot areas (Yes in S102), the recommended point search unit 46 searches for recommended points around the current position (S103). Specifically, the recommended spot search unit 46 extracts the recommended spot ID 335 included in the recommended spot information 334 associated with the tourist spot area where the current position exists from the tourist spot data 330. Only recommended points that satisfy the following conditions may be extracted.

  Condition 1: A recommended point where the coordinate position 336 is within a predetermined distance from the current position (for example, a linear distance of 3 km). In this case, the recommended spot search unit 46 extracts a recommended spot ID 335 within a predetermined distance from the current position based on the coordinate position 336 of the recommended spot.

  Condition 2: Recommended point where standard stay time is within user's desired time. In such a case, the recommended spot search unit 46 receives a desired stay time at the recommended spot from the user in advance. Then, the recommended spot ID 335 whose standard stay time 338 is within the desired stay time received from the user is extracted. In addition, the recommended spot search part 46 can display the desired stay time reception screen 261 and can receive the desired stay time as shown in FIG.

  Condition 3: A recommended point where the sales item specified by the user is handled. In such a case, the recommended spot search unit 46 first acquires the recommended spot information 334 of the tourist spot area where the current position exists with reference to the tourist spot data 330. Then, all sales items are extracted with reference to the detailed information 339 associated with all the recommended spot IDs 335 included in the recommended spot information 334. Then, as shown in FIG. 8, a list 262 of the extracted sales items (special products) is displayed, and designation of one of the sales items is received from the user. Then, the recommended point ID 335 in which the sales item designated by the user is included in the detailed information 339 is extracted. Thereby, the recommended point where the sales item designated by the user is handled is specified. A plurality of sales items may be specified.

  Condition 4: Recommended spot that is open today. In such a case, the recommended spot search unit 46 first acquires the recommended spot information 334 of the tourist spot area where the current position exists with reference to the tourist spot data 330. Then, from the recommended point information 334, it is determined whether the business hours included in the detailed information 339 include the current date and time (or estimated arrival time), and whether or not the business is open. The recommended spot ID 335 determined as is extracted. Note that the estimated arrival time is obtained by dividing the distance from the current position specified by the coordinate position 336 by a predetermined average speed and adding it to the current time.

  Condition 5: A recommended point on the bounce route to your home or in the vicinity. In such a case, the recommended point search unit 46 requests the route search unit 43 to search for a route to the home when the route is not routed. Then, a recommended point ID 335 of a recommended point where the coordinate position 336 exists on the searched route or a recommended point within a predetermined distance (for example, 500 m) from the link node constituting the route is extracted.

  Although several conditions have been described above, the recommended point search unit 46 may search for recommended points that satisfy all of the above conditions, or may satisfy any one or a plurality of combination conditions. You may make it search for a recommended point. Which condition is used can be set by the user.

  Next, the recommended spot search unit 46 displays the recommended spot of the search result on the display screen 200 as shown in FIG. 6B (S104 in FIG. 5). At this time, the name of the sightseeing area may be displayed together with the name. Further, the recommended spot name 337 may be displayed as a list, or may be displayed using the icon 212 at the coordinate position 336 on the map as shown in FIG. In addition, a recommended spot name 211 may be displayed near the icon 212. Further, when the button 213 for accepting display of detailed information is displayed and the button 213 is pressed, the detailed information 217 may be displayed based on the corresponding detailed information 339 as shown in FIG.

  Next, the recommended spot search unit 46 waits for selection of any recommended spot from the user via the input device 5 (S105 in FIG. 5). In the present embodiment, selection is accepted via the touch panel. That is, among the icons 212 indicating the recommended spots on the display screen 200, the recommended spot corresponding to the touched icon 212 is accepted as the selected recommended spot.

  If the cancel button 216 is pressed without selecting any recommended point, the recommended point search unit 46 shifts the process to S107. Thereby, as described above, the route search unit 43 searches for a route to the home without using any recommended point as a transit point, and ends the route search process.

  On the other hand, when the designation of any recommended point is accepted (Yes in S105), the recommended point searching unit 46 sets the designated recommended point as a transit point (S106), and the route searching unit 43 Instructs a route search. In response to this, the route search unit 43 searches for a route to the home via the set waypoint. Then, as shown in FIG. 6C, the searched route 220 is displayed (S108), and the route search process is terminated.

Note that the route search unit 43 may display information 230 useful for evaluating the searched route. For example,
(1) Time required to the recommended point (total value of the link travel time constituting the route),
(2) Expected arrival time to the recommended point (current time plus required time),
(3) Standard stay time of recommended point (standard stay time 338 of sightseeing spot data 330),
(4) Estimated arrival time at the recommended location (value obtained by adding the standard stay time to the time required for the route to the home),
May be calculated and displayed.

In addition, the route search unit 43 searches for a route (route searched in S107) when returning directly without passing through the recommended point as information 230 useful for evaluation, and passes through the recommended point. Information for comparison with the route may be displayed. That is,
(5) The time required for the route to your home if you return home,
(6) The estimated arrival time at home when returning home may be calculated and displayed.

  The route search process has been described above.

  If the return button 231 is pressed, the recommended spot search unit 46 returns to S105, waits for selection of a recommended spot, and performs the subsequent processing.

  Further, when receiving a guidance start request from the user (pressing the guidance start button 232), the route guidance unit 45 starts guidance processing using the route searched by the route search unit 43.

  The embodiment of the present invention has been described above.

  According to the above embodiment, when the user intends to escape from the sightseeing spot area, a point such as a souvenir shop in the vicinity, which should be visited before leaving the sightseeing spot, is automatically searched. Therefore, the user does not have to bother to make a request to shift to the point search mode, and to specify the genre to be searched, saving time.

  Further, depending on the setting of recommended spot conditions to be searched, it is possible to narrow the search to recommended spots that meet the user's wishes.

  The above embodiment can be variously modified.

  For example, the search for the recommended point is not limited to the case where the home is set as the destination (S101 in FIG. 6). For example, when a point outside a tourist area where the current position exists is set as a destination, the user has an intention to escape from the tourist area. Therefore, when a point outside the tourist area is set as the destination, it may be determined that there is an intention to escape from the tourist area, and the processing from S102 onward in FIG. 6 may be performed. By doing this, it is possible to introduce recommended points such as a souvenir shop that should be visited before exiting the sightseeing spot area without the user's trouble.

  The recommended spot search unit 46 can periodically download the sightseeing spot data 330 from the external server device that distributes the sightseeing spot data via the communication device 9.

  In the present embodiment, the name “tourist area” is used for convenience, but the present embodiment can also be applied to other specific areas that are not called “tourist area”. . For example, if your home is set as your destination, or if your destination is set outside a specific area that has been set in advance, you may have detected your intention to escape from that specific area, Can be searched and displayed.

  In the above embodiment, an example in which the present invention is applied to a vehicle-mounted navigation device has been described, but the present invention can also be applied to a navigation device other than the 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 storage device 3. FIG. 3 is a diagram illustrating a configuration example of sightseeing spot data stored in the storage device 3. FIG. 4 is a diagram illustrating a functional configuration of the arithmetic processing unit 1. FIG. 5 is a flowchart of route search processing. FIG. 6 is a transition diagram of the display screen. FIG. 7 is a diagram illustrating an example of a display screen. FIG. 8 is a diagram illustrating an example of a display screen. FIG. 9 is a diagram illustrating an example of a display screen.

Explanation of symbols

100: In-vehicle navigation device,
DESCRIPTION OF SYMBOLS 1 ... Arithmetic processing part, 2 ... Display, 3 ... Memory | storage device, 4 ... Voice input / output device, 5 ... Input device, 6 ... Wheel speed sensor, 7 ... Gyro, 8 ... GPS receiver, 9 ... Communication apparatus, 11 ... CPU, 12 ... RAM, 13 ... ROM, 14 ... I / F,
DESCRIPTION OF SYMBOLS 41 ... User operation analysis part, 42 ... Current position calculation part, 43 ... Route search part, 45 ... Route guidance part, 46 ... Recommended point search part, 47 ... Display processing part

Claims (12)

A navigation device having a function of calculating a current position,
Storage means for storing sightseeing spot information including a sightseeing spot area and recommended points existing in the sightseeing spot area;
A destination designation receiving means for receiving the designation of the destination;
If the current location is within the tourist area and the destination that has been designated by the destination designation accepting means is a point outside the tourist area where the current location exists, the tourist spot information A recommended point search means for searching for a recommended point existing in the sightseeing area where the current position exists,
Display means for displaying the recommended spot searched by the recommended spot search means;
A navigation device comprising: A navigation device having a function of calculating a current position,
Storage means for storing sightseeing spot information including a sightseeing spot area and recommended points existing in the sightseeing spot area;
A destination designation receiving means for receiving the designation of the destination;
When the current location exists in the tourist destination area and the destination designated by the destination designation accepting means is a predetermined home point, the current location is determined using the tourist destination information. Recommended point search means to search for recommended points in the sightseeing area where there is,
Display means for displaying the recommended spot searched by the recommended spot search means;
A navigation device comprising: The navigation device according to claim 1 or 2,
The display means includes
A navigation device characterized by displaying at least one of a route to a recommended point searched by the recommended point searching means, a required time, an estimated arrival time, and a distance. The navigation device according to claim 1 or 2,
When a plurality of recommended spots are searched by the recommended spot search means, a recommended spot selection accepting means for accepting selection of any recommended spot;
A navigation device comprising route search means for searching for a route by setting a recommended point received by the recommended point selection receiving means as a destination or waypoint. The navigation device according to claim 1 or 2,
A search is made for a first route to the destination when passing through the recommended point searched by the recommended point search means and a second route to the destination when not passing through the recommended point. Route search means to
The display means includes
Information for comparing the first route and the second route is displayed. The navigation device according to claim 1 or 2,
The tourist spot information includes a standard stay time for each recommended point,
The display means includes
A navigation device that displays a standard staying time of a recommended spot searched by the recommended spot searching means using the sightseeing spot information. The navigation device according to claim 1 or 2,
With a desired stay time reception means to accept the desired stay time to the recommended point,
The tourist spot information includes a standard stay time for each recommended point,
The navigation device characterized in that the recommended spot search means searches for a recommended spot whose standard stay time is shorter than the desired stay time received by the desired stay time reception means, using the sightseeing spot information. The navigation device according to claim 1 or 2,
The tourist spot information includes a standard stay time for each recommended point,
The standard stay time
A navigation device characterized in that a time required for a route to the home via the recommended point is calculated including the standard staying time. The navigation device according to claim 1 or 2,
Means for searching for a route to the destination;
The recommended point search means is:
A navigation device that searches for recommended points along or near the route to the destination. The navigation device according to claim 1 or 2,
The tourist destination information includes items handled by the recommended point,
The recommended point search means is:
Using the sightseeing spot information, obtain an item handled by a recommended spot existing in the sightseeing spot area where the current position exists,
Display the list of acquired items,
Accept selection of any item, and
A navigation device, wherein a recommended point handling a selected item is searched from recommended points existing in a sightseeing spot area where the current position exists. A guidance display method for a navigation device having a function of calculating a current position,
The navigation device
A storage means for storing sightseeing spot information including a sightseeing spot area and recommended points existing in the sightseeing spot area;
A destination designation receiving step for receiving a destination designation;
When the current location exists in the tourist destination area and the destination whose designation is received in the destination designation receiving step is a point outside the tourist destination area where the current location exists, the tourist spot information A recommended point search step of searching for a recommended point existing in the sightseeing area where the current position exists, using
A display step for displaying the recommended points searched in the recommended point search step;
A guidance display method for a navigation device, characterized by: A guidance display method for a navigation device having a function of calculating a current position,
The navigation device
A storage step of storing tourist spot information including a tourist spot area and recommended points existing in the tourist spot area;
A destination designation receiving step for receiving a destination designation;
When the current location exists in the tourist destination area and the destination that has been designated by the destination designation accepting step is a predetermined home point, the current location is determined using the tourist destination information. A recommended point search step for searching for a recommended point existing in the sightseeing area where the
A display step for displaying the recommended points searched in the recommended point search step;
A guidance display method for a navigation device, characterized by:

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