JP4985467B2 - Navigation device - Google Patents

Description

  The present invention relates to a navigation device that performs information retrieval based on learning content related to a user's preference tendency obtained by learning from user's past input information or from facility information related to a facility visited by the user's past.

2. Description of the Related Art Conventionally, a navigation device itself that learns user preferences from multiple viewpoints based on a search history selected by the user in the past and reflects the user-entered preferences and learned user preferences in information retrieval has been widely used. It is known (see, for example, Patent Document 1). Similarly, an in-vehicle navigation device is also known in which the user's preferences and driving habits are meticulously learned, and the route is searched by calculating the cost according to the learning content (see, for example, Patent Document 2).
JP 2004-355075 A JP 2004-45054 A

  However, in the above-described conventional navigation device, the learning results of various user preference tendencies are stored in the memory inside the navigation device and are not presented to the user. Therefore, the user grasps and confirms the learning results (learning contents). There is a problem that you can not. In other words, since the learning result is not presented to the user, there is a possibility that the user is anxious when the information search does not match the user's preference tendency. Further, in the above-described conventional navigation device, even if the learning accuracy is not good, there is no means for changing the learning result, and the learning result that does not match the user's preference tendency may continue to be reflected in the information search.

  Therefore, an object of the present invention is to provide a navigation device that can visualize and display learning contents used for information retrieval.

In order to achieve the above object, the first invention stores learning contents relating to the user's preference tendency obtained by learning from the user's past input information or from facility information relating to the facility visited by the user in the past. A navigation device comprising: storage means for performing information retrieval; and information retrieval means for performing information retrieval based on the learning content stored in the storage means;
Learning content display means for displaying on the display device to visualize the learning content stored in the storage means,
Means for displaying a user interface for inputting a learning content display request on the display device when an information search result by the information search means is displayed;
The learning content display means, when a learning content display request is input from the user via the user interface, learning used in obtaining the information search result among learning contents stored in the storage means The contents are displayed .

2nd invention is the navigation apparatus which concerns on 1st invention,
The learning content display means displays the learning content in such a manner that the degree of user preference regarding a plurality of items is relatively represented for each item.

3rd invention is the navigation apparatus which concerns on 1st or 2nd invention,
A learning content changing unit is provided that changes the learning content stored in the storage unit based on the changed content input by the user.

  ADVANTAGE OF THE INVENTION According to this invention, the navigation apparatus which can visualize and display the learning content used for information retrieval is obtained.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a system configuration diagram showing an embodiment of a navigation apparatus 1 according to the present invention. The navigation apparatus 1 according to the present embodiment is configured around an electronic control unit 10 (hereinafter referred to as “navigation ECU 10”). The navigation ECU 10 is composed of a microcomputer and includes a CPU, a ROM, a RAM, an I / O, and the like.

  A display device 50 and a user interface 52 are connected to the navigation ECU 10. In addition, a GPS receiver (not shown) or the like is connected to the navigation ECU 10.

  The display device 50 may be a liquid crystal display, for example, and is disposed on, for example, an instrument panel. The display on the display device 50 is controlled by the navigation ECU 10. For example, a learning content display generated by a learning content display unit 14 of the navigation ECU 10 described later, a search result display generated by an information search / output unit 12 of the navigation ECU 10 described later, and the like are output on the display device 50. The In addition, on the display device 50, a map drawn based on map data in the content database 34 described later may be displayed under the control of the navigation ECU 10. Further, on the display device 50, an operation menu image, a captured image of a vehicle-mounted camera, a TV video, or the like may be displayed.

  The user interface 52 includes input means such as a remote control and a touch switch on the display device 50, for example. In this example, a user (typically, a driver) can input various instructions via the user interface 52 to perform a learning content editing operation, an information search request, and the like, which will be described later.

  The navigation ECU 10 includes an information search / output unit 12, a learning content display unit 14, and a learning content change unit 16 as main functional units. Each of these units 12, 14 and 16 is realized by the CPU executing a program (software) stored in a ROM or the like. The navigation ECU 10 also includes a database 30. The database 30 may be realized by a memory inside the navigation ECU 10 or may be realized by an external memory accessible by the navigation ECU 10. The database 30 includes a learning content database 32 that stores and holds learning content, and a content database 34 that stores and holds normal content (map data and POI (Point Of Interest) information including information on sightseeing spots and various facilities). Including.

  The information search / output unit 12 accesses the content database 34 in response to an information search request from the user input via the user interface 52, searches for information according to the request from the user, and obtains the search result. A display is output via the display device 50.

  The information search / output unit 12 has a learning function for learning the user's preference tendency through the information search output process described above. The preference tendency of the learning target is determined depending on the search condition (and thus the content information in the content database 34) used in the search of the information search output function described above. For example, when the content in the content database 34 includes information on the genre of meals provided at each restaurant (for example, Chinese food, Asian food, etc.), the tendency of preference regarding the genre of meals is learned. In addition, when the content in the content database 34 includes information on characteristics of each facility (presence / absence of parking, price range, presence / absence of smoking / non-smoking seats, etc.), a tendency of preference regarding characteristics of each facility is learned. The At this time, the tendency of preference is relatively evaluated for each item in consideration of the search condition used at the time of the search, the item finally selected by the user, or the frequency thereof. For example, in the case of a preference tendency related to a genre of meals, the tendency of preference related to a plurality of items such as Chinese food and Asian food is relatively evaluated. For example, an information search request related to “Italian restaurant” relates to “Chinese restaurant”. When there are more information retrieval requests than the information retrieval request, it is learned that the user's preference degree regarding “Italian cuisine” is higher than “Chinese cuisine”. Note that the learning function of the information search / output unit 12 can be realized in a wide variety of modes, and may be realized by an arbitrary method.

  The information search / output unit 12 updates the learning content database 32 based on the learning content learned as described above. If there are many users, the learning content is managed for each user. In this case, the information search / output unit 12 recognizes (identifies) the current user based on information from a personal authentication system such as a smart key system, and updates the learning content related to the user.

  When performing the above-described information search / output process, the information search / output unit 12 accesses the learning content database 32 and executes a search process that reflects the learning content in the learning content database 32. In other words, the information search / output unit 12 searches for content in the content database 34 in a priority order corresponding to the learning content in the learning content database 32 and outputs the search result. For example, when an information search request is input for the search condition “facility around Shibuya Station” from the user interface 52, the learning content database 32 is accessed, the tendency of the preference regarding the genre of the user's meal is grasped, and the preference Search for facilities around Shibuya Station in order of priority according to the trend. At this time, for example, when the degree of preference of the user regarding “Italian cuisine” is high, an Italian restaurant around Shibuya Station is preferentially searched and output. Note that the information search / output function of the information search / output unit 12 can be realized in various ways, and can be realized by any method as long as a search reflecting the learning content in the learning content database 32 is performed. It's okay. The search result output mode can also be realized in a wide variety of modes, and any output mode may be employed. For example, a plurality of candidates may be displayed in order from the highest priority (see FIG. 4), or the search results may be displayed one by one in descending order of priority. In addition, the display of the search result may be accompanied by a display that prompts the user to add another search condition.

  The learning content display unit 14 visualizes and displays the learning content in the learning content database 32 on the display device 50. The learning content display unit 14 displays the current learning content in the learning content database 32 on the display device 50 when, for example, a learning content display request is input from the user via the user interface 52. At this time, the learning content display unit 14 preferably uses a display such as a radar graph or a bar graph, so that the user can easily understand the difference (relative difference) in the degree of preference for each item. The learning content is displayed in various ways. For example, FIG. 2 is a display example relating to the tendency of preference for the genre. In this case, according to the current learning content in the learning content database 32, the item “Ramen” has the highest degree of preference, and the item “Africa” The user can easily understand that the degree of preference for cooking is the lowest. FIG. 3 is a display example relating to the tendency of preference for facility characteristics. In this case, according to the current learning content in the learning content database 32, the degree of preference is highest for the item “parking available”. The user can easily understand that the degree of preference is the lowest for the item “with smoking seat”.

  The learning content changing unit 16 changes (rewrites) the learning content in the learning content database 32 according to the change content when the change content is input from the user via the user interface 52. Thereby, the user can change the learning content in the learning content database 32 when the learning content in the learning content database 32 does not match the tendency of his / her preference. That is, the user can freely customize the learning content in the learning content database 32.

  Next, with reference to FIG. 4, the main functions realized by the navigation device 1 of the above-described embodiment will be summarized (and supplemented). FIG. 4 shows steps 1 to 3 as a typical time series.

  In step 1, in response to a search request from the user via the user interface 52, a search process reflecting the learning content in the learning content database 32 by the information search / output unit 12 is executed, and learning in the learning content database 32 is performed. A search result reflecting the content is displayed on the display device 50. In this example, a search request is input with a search condition such as “facility around Sakuragicho”, for example, and there are 5 facilities around Sakuragicho that are searched reflecting the learning content in the learning content database 32. It is displayed. At this time, on the display device 50, a user interface 52 for inputting a learning content display request (a touch switch with the letters "learning content") is displayed (set). For example, as shown in the figure, when the user wants to know “based on what kind of search is performed”, the user touches the “learning content” touch switch and inputs a learning content display request.

  In step 2, the learning content display unit 14 performs a learning content display process in the learning content database 32 in response to a learning content display request from the user via the user interface 52. The contents are displayed on the display device 50. At this time, the learning content in the learning content database 32 used for obtaining the search result in step 1 is displayed. Thereby, the user can understand what kind of learning content the search result was obtained. At this time, on the display device 50, a user interface 52 (touch switch with the letters “change”) for inputting a display request for a learning content change screen is displayed. For example, when the user wants to change the degree of preference as shown in the figure, the user touches the “change” touch switch to input a display request for a learning content change screen.

  In step 3, in response to a display request for a learning content change screen from the user via the user interface 52, a user interface 52 for inputting the learning content change content is displayed on the display device 50. In the illustrated example, the user interface 52 is a touch switch that is set near a grid point (a position that represents each level of preference) of each item in the radar graph display. In this case, the user can arbitrarily change the degree of preference of each item by touching the grid point of each item in the radar graph display. When the degree of preference is changed in this way, the learning content in the learning content database 32 is changed (updated) accordingly. In addition, when the degree of preference is changed, the user interface 52 (touch switch) for inputting a request for re-search is displayed so that the re-search based on the changed learning content is immediately possible. Also good.

  According to the navigation apparatus 1 of the present embodiment described above, the following excellent effects can be obtained.

  According to the present embodiment, as described above, since the learning content is visualized and displayed, the user can confirm how the navigation device 1 is learning the user's preference tendency. . Moreover, since the learning content can be changed by the user, the learning content can be customized to suit the user's preference tendency. As a result, the user can efficiently obtain a search result suitable for his / her preference.

  The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the present invention. Can be added.

  For example, in the above-described embodiment, the data in the learning content database 32 is constructed / updated from the user's past input information, but instead of or in addition to this, from the facility information regarding the facility where the user has visited in the past Data in the learning content database 32 may be constructed / updated. Specifically, the information search / output unit 12 identifies the facility where the user has visited based on the vehicle position information measured by the GPS receiver and the location information of the facility in the content database 34, and It is good also as grasping | ascertaining the characteristic of a facility from the information which concerns on the said facility in the content database 34, and learning a user's preference tendency.

  Further, in the above-described embodiment, the tendency of preference for two types of categories (the tendency of preference for genre and facility characteristics) is illustrated, but there are a wide variety of categories. For example, the tendency of preference for the type of hotel, the type of convenience store, the characteristics of the fueling facility, the type of road, the type of parking lot, etc. may be learned. A more detailed level of preference tendency (for example, store name or facility name) may be learned. In these cases as well, the learning contents are visualized and can be changed.

  In the above-described embodiment, various instructions / requests from the user are realized by the user interface 52 that is a touch switch on the display device 50. However, various instructions and requests from the user may be realized using other user interfaces such as a voice input device using a voice recognition device.

  In the above-described embodiment, as shown in FIG. 4, a user interface 52 for inputting learning content change content is displayed on the display device 50 in response to a learning content change screen display request from the user. It is displayed. However, the user interface 52 for inputting the change contents of the learning content may be displayed on the display device 50 in accordance with the learning content display request from the user.

1 is a system configuration diagram showing an embodiment of a navigation device 1 according to the present invention. It is a figure which shows the example of a display regarding the tendency of the preference with respect to a genre. It is a figure which shows the example of a display regarding the tendency of the preference with respect to the characteristic of a facility. It is a conceptual diagram which summarizes and shows the main functions implement | achieved by the navigation apparatus 1 of a present Example.

Explanation of symbols

1 Navigation device 10 Navigation ECU
DESCRIPTION OF SYMBOLS 12 Information search and output part 14 Learning content display part 16 Learning content change part 30 Database 32 Learning content database 34 Content database 50 Display apparatus 52 User interface

Claims (3)

Storage means for storing learning contents regarding the user's preference tendency obtained by learning from the user's past input information or facility information relating to the facility visited by the user in the past, and learning stored in the storage means In a navigation device comprising information retrieval means for performing information retrieval based on content,
Learning content display means for displaying on the display device to visualize the learning content stored in the storage means,
Means for displaying a user interface for inputting a learning content display request on the display device when an information search result by the information search means is displayed;
The learning content display means, when a learning content display request is input from the user via the user interface, learning used in obtaining the information search result among learning contents stored in the storage means A navigation apparatus characterized by displaying contents .   The navigation device according to claim 1, wherein the learning content display unit displays the learning content in a manner in which a degree of user preference regarding a plurality of items is relatively expressed for each item.   The navigation apparatus according to claim 1, further comprising learning content changing means for changing the learning content stored in the storage means based on a change content input from a user.

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