JP2006010326A - Navigation system for car - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation system for cars capable of displaying destination candidates suitable for users without having to input one's tastes. <P>SOLUTION: The navigation system for cars stores information on a history of visits to facilities; statistical information on a user's tastes based on the history of visits to facilities; and statistical distance information on the distances between facilities visited and a registered user's house in an external storage medium. On the basis of the stored information, facilities within an average maximum direct distance from the user's house which have not yet been visited in the past but are suitable for the user's tastes are displayed as guidance destination candidates. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicular navigation apparatus that displays destination candidates that meet user preferences.

  2. Description of the Related Art Conventionally, vehicle navigation devices that search for a guide route to a destination and display the searched guide route together with a map to a user in the vehicle have been widely used. Moreover, in such a vehicle navigation apparatus, Patent Document 1 discloses a technique of selecting a destination and presenting it to the user when the place the user wants to visit is ambiguous.

The vehicle navigation device disclosed in Patent Document 1 is configured to randomly select a facility corresponding to the purpose and display it to the user based on an input of a visit purpose such as meal, play, and sightseeing by the user. Yes.
JP 2003-75164 A

  However, in such a technique, there is a problem that the user needs to input information reflecting his / her preference such as the purpose of visiting.

  The present invention has been made in view of the above points, and it is an object of the present invention to provide a vehicle navigation device that displays destination candidates that match user preferences without requiring input of one's preferences.

  In order to achieve the above object, the invention described in claim 1 includes a storage medium, storage control means for storing statistical information of user preferences based on a visit history to a facility in the storage medium, and the stored preferences. It is a vehicle navigation apparatus provided with the candidate display means which displays the facility which suits a user preference as a guidance destination candidate based on this statistical information.

  In this way, the vehicle navigation device selects and displays the facility meeting the user's preference based on the statistical information of the user's preference based on the visit history to the facility. It is possible to display destination candidates that match the user's preference without the user having to input his / her preference.

  Further, according to a second aspect of the present invention, in the vehicle navigation apparatus according to the first aspect, the storage control means further stores the statistical information of the distance based on the distance between the visited facility and the registered home. The candidate display means stores guidance facilities that are within a typical distance based on the statistical information of the distance from the home and that meet the user's preference based on the preference statistical information. It is displayed as.

  In this way, by narrowing the facilities of the guidance destination candidates to those within a representative distance based on the statistical information of the distance between the visiting facility and the home, guidance destination candidates that further meet the user's needs are displayed. be able to.

  Further, the invention according to claim 3 is the vehicle navigation device according to claim 1, wherein the storage control means further stores visit history information to a facility in the storage medium, and the candidate display means includes: On the basis of the stored visit history information and the statistical information of the preference, a facility that matches the preference of the user who has not visited in the past is displayed as a guidance destination candidate.

  In this way, the vehicle navigation device is configured to select and display the facility meeting the user's preference based on the user's preference statistical information based on the visit history to the facility. It is possible to display destination candidates that match the user's preference without having to input. In addition, since there is a low need for route guidance for facilities that have been visited in the past, by selecting facilities that have not been visited in the past as guidance destination candidates, further guidance destination candidates that meet user needs Can be displayed.

  Further, the invention according to claim 4 is based on the storage medium, the visit history information to the facility, the statistical information of the user's preference based on the visit history to the facility, and the distance between the visited facility and the registered home. Based on the storage control means for storing the statistical information of the distance in the storage medium, the stored visit history information and the statistical information of the preference, within a representative distance based on the statistical information of the distance from the home, A vehicle navigation apparatus comprising candidate display means for displaying a facility that has never been visited in the past and meets a user's preference as a guidance destination candidate.

  In this way, the vehicle navigation device is configured to select and display the facility meeting the user's preference based on the user's preference statistical information based on the visit history to the facility. It is possible to display destination candidates that match the user's preference without having to input. In addition, since there is a low need for route guidance for facilities that have been visited in the past, by selecting facilities that have not been visited in the past as guidance destination candidates, further guidance destination candidates that meet user needs Can be displayed. Further, by narrowing down the guidance destination candidate facilities to those within a typical distance based on the statistical information on the distance between the visiting facility and the home, it is possible to display guidance destination candidates that further meet the user's needs. it can.

  Further, in the navigation device according to any one of claims 1 to 4, the preference statistical information stored is the number of visits for each type of facility visited. It is characterized by being.

  Thus, guidance destination candidates can be displayed using, for example, the number of visits for each facility type for the visited facility as the statistical information of the preference.

  According to a sixth aspect of the present invention, in the vehicular navigation device according to any one of the first to fourth aspects, the candidate display means selects a facility that matches the user's preference based on the number of visits. The facility belongs to the selected facility type.

  By doing in this way, the visibility for a user improves.

  Hereinafter, an embodiment of the present invention will be described. FIG. 1 shows a hardware configuration of a vehicle navigation apparatus 10 according to the present embodiment. The vehicle navigation device 10 includes a position detector 11, an input device 12, a display device 13, an external storage medium 14, a control circuit 15, and an ignition line 16.

  The position detector 11 has a sensor such as a well-known geomagnetic sensor, a gyroscope, a vehicle speed sensor that outputs a pulse signal based on wheel rotation, and a GPS receiver. Information for specifying the current current position is output to the control circuit 15.

  The input device 12 includes a plurality of mechanical switches provided in the vehicle navigation device 10 and an input device such as a touch panel provided so as to overlap the display surface of the display device 13. The user can press the mechanical switch or touch the touch panel. The base signal is output to the control circuit 15.

The display device 13 is an image display device that displays a video based on an image signal such as a map output from the control circuit 15 to the user.

  The external storage medium 14 is a non-volatile storage medium such as an HDD, and stores a program, map data, a visit database, and the like that are read and executed by the control circuit 15. Map data includes road data indicating the location of multiple roads and their road connections, connection relationships, etc., and locations, types (such as Chinese restaurants, restaurants, amusement parks, department stores, parking lots, etc.) This includes facility data indicating the name of the western restaurant, amusement park, game center, historic site, hot springs, etc.

  The visit data has a history list, maximum linear distance data, and a preference ranking list. This visit database will be described later.

  The control circuit 15 has a RAM, a ROM, and a CPU (not shown). The CPU executes a program for the operation of the vehicle navigation apparatus 10 read from the ROM and the external storage medium 14, and reads information from the ROM, RAM, and external storage medium 14 when executing the program. Information is written to the external storage medium 14, signals are transmitted to the position detector 11, the input device 12, the display device 13, and the wireless module 14, and the vehicle engine switch is turned on, ACC, off from the ignition line 16. A signal indicating the position is received.

  As specific processing performed by the CPU of the control circuit 15 executing the program, the current position for specifying the current position of the vehicle using a known technique such as map matching based on the signal from the position detector 11 Specific processing, guidance route search processing for receiving an input of a destination by the user from the input device 12, calculating an optimum guidance route from the current position to the destination, reading map data from the external storage medium 14, and calculating the travel A route guidance process or the like that prompts the user to drive along the guidance route by causing the display device 13 to display an image of the route, the memory point, and the like together with the map data and causing the display device 13 to output an instruction of the bending direction at the intersection. is there.

  In the route guidance process of this embodiment, when a user inputs a visit purpose (meal, play, shopping, sightseeing, etc.) from the input device 12, the map data is converted into the visit purpose based on the visit purpose. Select multiple corresponding types of facilities, search for guidance routes for one of them, and display them in a format that can automatically select destination candidates without receiving input of the visit purpose by the user In some cases, a guidance route for one of them is searched for guidance. As a method of selecting one from a plurality of facilities, it may be selected randomly or a selection may be received from the user.

  Information about which type corresponds to a certain visit purpose may be stored in advance in the external storage medium 14 as a correspondence table. Corresponding relationship between visit purpose and type, for example, meals include certain types of restaurants such as Chinese restaurants, Western restaurants, Japanese restaurants, fruit parlors, etc. For sightseeing, historic sites, hot springs, museums The department stores, convenience stores, shopping malls, etc. are available for shopping.

  Further, the control circuit 15 stores the coordinates of the designated point in the external storage medium 14 as home registration data based on the operation of the designation of the point and home registration using the user input device 12.

  In addition, the control circuit 15 of the present embodiment executes a visit database management program and a destination candidate display program.

  Hereinafter, these two programs will be described. FIG. 2 shows a flowchart of this visit database management program 200.

  When the control circuit 15 detects that the user of the vehicle in which the vehicle navigation device 10 is mounted has stopped for a predetermined time (for example, 30 minutes) at a certain facility other than the home, the visit database management program 200 Is supposed to start running. The detection of the stop of the vehicle by the control circuit 15 may be based on the detection that the ignition key position of the vehicle is ACC or OFF by a signal from the ignition line 16, or the position detector 11 It may be based on the fact that the vehicle speed indicated by the signal from the vehicle speed sensor has become substantially zero (for example, 0.1 km / h or less).

  When starting the execution of the visit database management program 200, the control circuit 15 first stores information on the current position in a history list in the visit database in step 210. More specifically, the current position information is data including the current time, the name of the facility at the current position, the purpose of visiting the facility at the current position, and the linear distance from the current position to the registered home. In this step 210, this data is added as one entry to the history list in the visit database.

  Therefore, each time the visit database management program 200 is executed, one entry in the history list is added by the processing of step 210. This history list corresponds to the visit history information.

  If the vehicle has arrived at the facility by guidance to the facility at the current location, and the user inputs the visit purpose when the facility is set as the destination, the visit purpose is changed to the current location. The purpose of visiting the facilities. In addition, when there is no input of the visit purpose from the user and the user has arrived at this facility, the visit purpose corresponding to the type of the facility may be the visit purpose of the facility at the current position from the correspondence information described above. .

  The straight line distance from the current position to the registered home is specified based on the current position coordinates specified by the current position specifying process and the home coordinates in the home registration data.

  If the current position does not correspond to any facility registered in the map data, this program may be terminated.

  Next, in step 220, whether or not the straight line distance added to the visit database in the previous step 210 (hereinafter referred to as the current straight line distance) is longer than the maximum straight line distance of the day, the maximum straight line distance data ( (Corresponding to distance statistical information). The maximum straight line data is data having entries for a plurality of days each consisting of a set of a date and the maximum straight line distance on that date, and further having average straight line distance data for a predetermined period in the past (eg, 6 months).

  More specifically, in step 220, an entry having the current date is read from the maximum linear distance data in the visit database, and whether or not the current linear distance is longer than the maximum linear distance described in the entry. Determine. If it is longer, the process of step 230 is executed. If not longer, the process of step 240 is executed.

  In step 230, an entry consisting of the current linear distance and the current date is written to the maximum linear distance data, and other entries having the same date are deleted from the maximum linear distance data. By doing so, the record of the maximum linear distance of the day is newly added or updated.

  Further, in step 230, based on the maximum linear distance data, an average maximum linear distance within a predetermined past period (for example, six months) is calculated, and the value is written in the maximum linear distance data. Specifically, the date entries from the present to a predetermined period before are read out from the maximum linear distance data, and the average value of the maximum linear distance values included in these entries is calculated. Then, if the average value is described in the current maximum linear distance data, the calculated average value is written in an updated form.

  In this manner, the maximum linear distance between the facility and the home on each date and the average value of these maximum linear distances within a predetermined period in the past are stored in the maximum linear distance data by the process of step 230. Is done. After step 230, the process of step 240 is subsequently executed.

  In step 240, statistical processing based on the visit purpose and facility type (hereinafter referred to as the current visit purpose and facility type) stored in the history list in the previous step 210 is performed to rank the types according to purpose. The result is stored in a preference ranking list (corresponding to preference statistical information). The preference order list has a plurality of entries for each type of facility, and each entry includes the type of facility, the purpose of visit corresponding to that type, the number of visits to that type of facility, and the ranking of that type during that purpose of visit. It has come to have information of.

  As a specific process of step 240, an entry having the current visit purpose and facility type is selected from the preference order list, and information on the number of visits in the selected entry is increased by one. Further, all entries having the visit purpose this time are read from the preference order list, the entries are ranked in descending order of the number of visits in each entry, and the ranks are written in the information part of the rank of each entry.

  In this way, each time the processing of the visit database management program 200 is executed, the preference ranking list, the information on the number of visits of the facility of this visit purpose and type, and the visit of each facility type for this visit purpose The frequency ranking is updated. After step 240, execution of this visit database management program 200 ends.

  When the control circuit 15 executes such a visit database management program 200, the vehicle navigation device 10 stores the history list, the maximum linear distance data, and the preference rank list in the external storage medium 14.

  Next, the destination candidate display program 300 will be described. A flowchart of this destination candidate display program 300 is shown in FIG. For example, the control circuit 15 detects an operation of the input device 12 that does not specify the user's preference, such as detecting that the user touches a button with a character string “Omakase Destination Search” displayed on the touch panel. Then, the execution of the destination candidate display program 300 is started.

  When the execution of the destination candidate display program 300 is started, the control circuit 15 first searches and extracts a facility whose straight line distance is within the average maximum straight line distance from the registered home in step 310. This search is performed for facility data in the map data. The average maximum linear distance used here is stored in the maximum linear distance data in the visit database in step 230 of the visit database management program 200. The straight line distance from the home to the facility is specified based on the home registration data and the position coordinates in the facility data.

  Subsequently, in step 320, the facilities that match the preference are narrowed down. That is, only a facility that matches the user's preference is selected from the plurality of facilities extracted in step 310. Whether or not a certain facility matches the user's preference is determined based on the preference ranking list described above.

  Specifically, information on the rank of the entry in the preference rank list corresponding to the type of the facility is read, and if the rank is higher than a predetermined reference rank (for example, the third rank), the facility matches the user's preference. Judge that you are doing. If the rank is the same as or lower than the reference rank, it is determined that the facility does not match the user's preference. The predetermined reference order may be different for each visit purpose.

  In step 330, facilities that have not been visited in the past are narrowed down. That is, only the facilities that have not visited in the past are selected from the plurality of facilities narrowed down in step 320. Whether or not a certain facility has visited in the past is determined based on the history list described above.

  Specifically, an entry including the facility is searched from the history list, and if the result of the search is found, it is determined that the facility has been visited in the past. If not found, the facility has been visited in the past. It is determined that there is no thing.

  Subsequently, in step 340, the facilities narrowed down in step 330 are displayed in order on the display device 13 as destination candidate proposal facilities. This ranking display is a list display for each purpose of visit. That is, the ranking display is divided for each visit purpose corresponding to the type of facility to be displayed, and a list in which the facility is ranked for each visit purpose is displayed.

  Note that the ranking of the facilities in each list may be based on the ranking of the types of the facilities. The linear distance from the home of the facility may be in order from long to short. The display contents of each facility include the facility name, the purpose of the visit, the type of facility, the straight line distance from the home to the facility, and the like.

  After step 340, execution of the destination candidate display program 300 ends.

  After execution of the destination candidate display program 300, when the user selects and operates any facility in the displayed list using the input device 12, the control circuit 15 starts route guidance for the selected facility. To do.

  When the control circuit 15 executes the program as described above, the control circuit 15 is within the average maximum linear distance from the home based on the history list, the maximum linear distance data, and the preference ranking list in the visit database. A facility that has never been visited and meets the user's preference is displayed as a guide destination candidate.

  As described above, the vehicle navigation device 10 selects and displays the facility that meets the user's preference based on the statistical information of the user's preference based on the visit history of the facility. It is possible to display destination candidates that match the user's preference without having to perform the input. In addition, since there is a low need for route guidance for facilities that have been visited in the past, by selecting facilities that have not been visited in the past as guidance destination candidates, further guidance destination candidates that meet user needs Can be displayed. Further, by narrowing down the guidance destination candidate facilities to those within a typical distance based on the statistical information on the distance between the visiting facility and the home, it is possible to display guidance destination candidates that further meet the user's needs. it can.

  In the above-described embodiment, the control circuit 15 functions as a storage control unit by executing the visit database management program 200.

  Further, the display device 13 functions as a display unit.

  In the above-described embodiment, the control circuit 15 ranks the number of visits of the facility type according to the purpose of visit in step 240 of the visit database management program 200 and stores it in the preference rank list. It is not necessary to classify by visit purpose. All facility types may be ranked together. In that case, in the execution of the destination candidate display program 300, narrowing down and display may be performed regardless of the purpose of the visit.

  In the above-described embodiment, the registered distance from the home to the facility does not necessarily have to be a linear distance, and may be a distance along a route guided from the home to the facility, for example.

  In the present embodiment, the average maximum straight line distance based on the visit history is used as the reference distance used in step 310 of the destination candidate display program 300. However, this need not be the case. For example, the reference distance represents a feature of the stored distance such as the square root of the mean square distance based on the visit history, a distance such that 60% of the straight line distance stored in the history list is equal to or less than the distance. Any representative distance may be used.

1 is a diagram showing a configuration of a vehicle navigation apparatus 10 according to an embodiment of the present invention. 5 is a flowchart of a visit database management program 200. 5 is a flowchart of a destination candidate display program 300.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Vehicle navigation apparatus, 11 ... Position detector, 12 ... Input device,
DESCRIPTION OF SYMBOLS 13 ... Display apparatus, 14 ... External storage medium, 15 ... Control circuit, 16 ... Ignition line,
200 ... Visit database management program, 300 ... Destination candidate display program.

Claims (6)

A storage medium;
Storage control means for storing, in the storage medium, statistical information of user preferences based on a visit history to a facility;
A vehicle navigation apparatus comprising: candidate display means for displaying a facility that matches a user's preference as a guidance destination candidate based on the stored statistical information of the preference. The storage control means further stores in the storage medium statistical information of distance based on the distance between the visited facility and the registered home,
The candidate display means displays, as guidance destination candidates, facilities that are within a typical distance based on the statistical information of the distance from the home and that meet the user's preference based on the statistical information of the preference. The vehicle navigation apparatus according to claim 1, wherein The storage control means further stores facility visit history information in the storage medium,
The candidate display means displays, as guidance destination candidates, facilities that meet the preferences of users who have not visited in the past based on the stored visit history information and the statistical information of the preferences. Item 4. The vehicle navigation device according to Item 1. A storage medium;
Storage control means for storing, in the storage medium, visit history information to the facility, statistical information of user preferences based on the visit history to the facility, and statistical information of distance based on the distance between the visited facility and the registered home ,
Based on the stored visit history information and the statistical information of the preference, a facility that is within a typical distance from the home based on the statistical information of the distance, has not visited in the past, and meets the user's preference A vehicle navigation apparatus comprising candidate display means for displaying as a guidance destination candidate. The navigation device according to any one of claims 1 to 4, wherein the preference statistical information stored is the number of visits for each type of facility for the visited facility. The vehicular navigation according to any one of claims 1 to 4, wherein the candidate display means sets a facility that matches a user's preference as a facility belonging to the facility type selected based on the number of visits. apparatus.

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