JP2006277386A - Vehicle information presentation device, information presentation method, and information presentation system - Google Patents

Abstract

The present invention reduces the time required for a user to distinguish topics by himself and makes it easy for the user to grasp information, thereby presenting valuable information to the user.
A current position of a host vehicle is output as vehicle position information. The output vehicle position information is transmitted to the server 10 storing the topic position information indicating the position of each topic, and the server 10 is requested to search for topics included in the search area based on the vehicle position information. Based on the selection criteria for selecting the presentation target topic and the non-presentation target topic, the presentation target topic is selected from the search results of the topics acquired from the server 10. Along with the map information corresponding to the vehicle position information, the selected presentation target topic is presented in association with the topic position information.
[Selection] Figure 3

Description

  The present invention relates to a vehicle information providing apparatus, an information presentation method, and an information presentation system for presenting information to a vehicle user.

In recent years, information presentation apparatuses that present information to vehicle users are known. In this type of vehicle information presentation apparatus, information presented to the user typically includes navigation information that is the position and route information of the host vehicle. Also, from the viewpoint of improving convenience, a function of acquiring an event existing around the host vehicle from an external device via a network and presenting the peripheral information together with map information is also known (for example, a patent) Reference 1).
JP 2003-288680 A

  However, there are variations in the information value of each piece of acquired peripheral information, and if all of them are presented, it takes time and effort for the user to distinguish the necessary information. It may not be a satisfactory presentation of information.

  In order to solve such a problem, the present invention provides a server for managing a bulletin board capable of writing or browsing information via a network for each topic, and a vehicle information presentation device capable of transmitting information via the network. . The vehicle information presentation device outputs the current position of the host vehicle as vehicle position information, and transmits the output vehicle position information to a server that stores topic position information indicating the position of each topic. A selection criterion for requesting a server to search for topics included in a search area based on information, and selecting a presentation target topic to be presented to a vehicle user and a non-presentation topic not to be presented to the user The presentation target topic is selected from the topic search results acquired from the server, and the selected presentation target topic is presented in association with the topic position information together with the map information corresponding to the vehicle position information.

  According to the present invention, the search result of the topic acquired from the server based on the selection criterion for selecting the presentation target topic presented to the vehicle user and the non-presentation target topic not presented to the user. Since the presentation target topic is selected from among them, it is possible to reduce the trouble of the user distinguishing the topic by himself / herself as compared with the method of presenting all the topics included in the search area. Moreover, since the user can easily grasp the information by selecting the topic, it is possible to present valuable information for the user.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is an overall configuration diagram of an information presentation system 1 according to the first embodiment of the present invention. This system is mainly composed of a server 10 and an information presentation device 20, and is premised on a network environment in which the server 10 and the information presentation device 20 can communicate information with each other. The network typically includes the Internet, but is not limited to this, and various wired / wireless networks can be applied.

  The server 10 is a server that manages information related to various topics, and each topic can be written and viewed by a user connected to the network (and a new topic can be added by the user). Can also). Such a system is known as an electronic bulletin board, for example. In the server 10, various bulletin boards exist for each target topic such as a store, an event, a building, and a place.

  FIG. 2 is a block configuration diagram illustrating the server 10 according to the first embodiment. When this is viewed functionally, the server 10 includes a bulletin board management unit (bulletin board management unit) 11, a communication unit 12, and a bulletin board information storage unit (bulletin board information storage unit) 13. As the server 10, a general computer mainly composed of a CPU, a ROM, a RAM, and an I / O interface can be used.

  The bulletin board management unit 11 has a function of permitting writing of information (for example, a comment) to the bulletin board that handles each topic, and permitting browsing of the information. It has a function to manage.

  The communication unit 12 is a known communication device such as a modem, and can transmit information via the network to the information presentation device 20 or an electronic information device (not shown) such as a PC or a mobile phone. .

  The bulletin board information storage unit 13 stores comments written on each bulletin board, topic titles handled by the bulletin board, and the like as bulletin board data. A different identifier (for example, A to Z) is assigned to each bulletin board existing in the server 10, and bulletin board data of each bulletin board is stored in association with this identifier.

  In such a server 10, when a bulletin board handling a certain topic is browsed by the user, the bulletin board management unit 11 searches the bulletin board information storage unit 13 based on the identifier, and is associated with the bulletin board for which the browsing request is made. The bulletin board data is identified and presented to the user. When the user writes information to the bulletin board that handles a certain topic, the bulletin board management unit 11 searches the bulletin board information storage unit 13 based on the identifier, and the bulletin board data associated with the bulletin board for which the writing request is made. In addition, the written contents are added as new information.

  Moreover, in this embodiment, this server 10 is further provided with the function described below. The bulletin board information storage unit 13 further stores topic position information indicating the position (location) of each topic handled on the bulletin board. Each topic position information is stored in association with an identifier of a bulletin board that handles the topic.

  The topic position information is preferably information indicating an absolute position, such as latitude and longitude, on the premise of matching with current position information transmitted from the information presentation device 20 described later. These pieces of topic position information are written by a user having information on the topic when writing information on the bulletin board or when setting up a bulletin board that handles a new topic. As a method for writing the topic position information, a form in which the user directly inputs and writes the topic position (latitude and longitude) can be considered. However, in consideration of user convenience, a database in which location information such as a topic name, address or telephone number is associated with topic location information is prepared in advance. A method may be used in which position information corresponding to is written. In addition, a method is used in which an area on the map is associated with position information, the map is presented to the user, and when the user designates a predetermined position on the map, the corresponding position information is written. May be.

  In addition, the bulletin board management unit 11 manages topic topic information indicating topicality of topics handled by the bulletin board, such as the total number of responses, the number of written characters, the writing time interval, and the elapsed time since the last writing, for each bulletin board. Here, the number of responses is the number of comments written on the bulletin board, and the number of written characters is the total number of characters of the written comments. In addition, the writing time interval statistically shows the time from the establishment of the bulletin board to the time when comments are sequentially written. For example, the average value of the time during which each comment is written corresponds to this. To do. The elapsed time from the last writing is the elapsed time from the last written comment to the present time. Each topic topic information is stored in the bulletin board information storage unit 13 in association with the identifier of the bulletin board that handles the topic.

  FIG. 3 is a block configuration diagram of the information presentation apparatus 20 according to the first embodiment. The information presentation device 20 is a vehicle information presentation device that is mounted on a vehicle and provides information to an occupant. In the present embodiment, the information presentation device 20 is embodied as a navigation device that provides navigation information. The information presentation device 20 is a topic that exists around the current position of the vehicle along with the navigation information (this topic is (Corresponding to the topic handled on the bulletin board of the server 10) is presented to the occupant as peripheral information. When this is functionally captured, the information presentation device 20 has an information presentation unit (information presentation unit) 21, map data 22, a current position output unit (current position output unit) 23, and a peripheral information search unit (periphery). (Information search means) 24, communication section (information acquisition means) 25, presentation information selection section (presentation information selection means) 26, bulletin board information storage section 27, and input section 28.

  The information presentation unit 21 has a function of presenting various types of information to the occupant and is, for example, a display device such as a liquid crystal display. The map data 22 is a database in which map information for navigation is associated with position information, and is stored in a hard disk device integrated with the information presentation device 20. The map information includes a node representing a specific point on the road and a road link representing a connection between the specific points. Note that the map data 22 may be stored in a recording medium such as a DVD or CD-ROM and readable by the information presentation device 20.

  The current position output unit 23 detects the current position of the vehicle based on information output from various sensors (not shown) such as a wheel speed sensor, a geomagnetic sensor, and a gyro and a GPS receiver (not shown). The detected current position is output as vehicle position information. Note that the method of detecting the current position is not limited to the method using GPS, and the current position is detected based on the distance to the base station that receives radio waves transmitted from a plurality of base stations at the same time and is calculated from the arrival times of the radio waves. A method of detecting the position by triangulation may be used.

  The surrounding information search unit 24 transmits the vehicle position information output from the current position output unit 23 to the server 10 and requests the server 10 to search for topics included in the search area based on the vehicle position information.

  The communication unit 25 can transmit information via the server 10 and the network using a communication function such as a telephone line or a wireless LAN. In this embodiment, the communication unit 25 has a function as an information acquisition unit that acquires a search result of a topic from the server 10.

  As described later, the presentation information selection unit 26 includes a presentation target topic to be presented to the occupant and a non-presentation target topic that is not presented to the occupant from the topics in the search area acquired by the communication unit 25. Sort out. In this embodiment, the presentation information selection unit 26 uses the topicality of a topic as a selection criterion for selecting a presentation target topic and a non-presentation target topic, and selects a topic with high topicality as a presentation target topic. Also, the presentation information selection unit 26 searches the map data 22 based on the vehicle position information output from the current position output unit 23, and reads map information that corresponds to the current position of the vehicle. Then, the presentation information selection unit 26 displays the selected presentation target topic together with the read map information in association with the topic position information, that is, in association with the actual position of the topic. 21 is controlled. When presenting the presentation target topic on the map information, the information presentation unit 21 performs this by displaying an icon using an icon representing the topic. In this case, the presentation information selection unit 26 determines the presentation form so that the presentation form of the icon changes according to the nature of the presentation target topic (topicality in the present embodiment). The presentation form is determined from at least one of icon shape, size, blinking method, color, brightness, and contrast, or a combination of a plurality of these requirements.

  The bulletin board information storage unit 27 stores information on the presentation form determined by the presentation information selection unit 26 for each presentation target topic as bulletin board information.

  The input unit 28 is typically composed of switches that can be operated by a user (occupant), and can thereby operate the information presentation device 20 or input necessary information. . In this embodiment, the input part 28 is a touch panel type input part which can perform input operation according to the information displayed on the display of the information presentation part 21, as an example. By operating the input unit 28, the user can request the information presentation apparatus 20 to acquire peripheral information.

  Below, the information presentation procedure by the information presentation system 1 which concerns on the 1st Embodiment of this invention is demonstrated. FIG. 4 is a flowchart showing an information presentation procedure according to the first embodiment. The procedure shown in this flowchart is started when the information presentation device 20 that is a navigation device is turned on. When this procedure is started, the contents stored in the bulletin board information storage unit 27 are cleared as initial processing. First, in step 10, the current position output unit 23 detects the current position of the vehicle, and outputs the detected current position as vehicle position information.

  In step 11, it is determined whether a peripheral information acquisition request for requesting acquisition of peripheral information has been input by the user. If a negative determination is made in step 11, that is, if there is no peripheral information acquisition request, the procedure from step 12 to step 16 is skipped and the process proceeds to step 17 described later. On the other hand, if an affirmative determination is made in step 11, that is, if there is a peripheral information acquisition request, the process proceeds to step 12.

  In step 12, the peripheral information search unit 24 instructs the server 10 to acquire peripheral information. Specifically, the surrounding information search unit 24 transmits the vehicle position information to the server 10 and requests the server 10 to search for topics existing in the search area based on the vehicle position information.

  When the communication unit 12 of the server 10 receives a peripheral information acquisition instruction from the information presentation device 20, in step 13, the bulletin board management unit 11 searches for topics existing in the search area from the topics handled by each bulletin board. . Specifically, the bulletin board management unit 11 sets a predetermined range (for example, within a radius of 500 m) as a search area based on the vehicle position information. The bulletin board management unit 11 searches the bulletin board information storage unit 13 based on the topic position information, and specifies the bulletin board whose topic position information is included in the search area. Then, the bulletin board management unit 11 searches the bulletin board information storage unit 13 based on the identifier of the identified bulletin board, and identifies the topic (typically the title of the bulletin board) handled by the bulletin board. The bulletin board management unit 11 reads the topic position information and topic topic information associated with the identified bulletin board from the bulletin board information storage unit 13.

  In step 14, the bulletin board management unit 11 associates the topic position information and the topic topic information with the identifier of the corresponding bulletin board for each topic in the search area, and transmits these as bulletin board information to the information presentation apparatus 20. .

  When the communication unit 25 of the information presentation device 20 acquires a search result (bulletin board information) from the server 10, in step 15, the presentation information selection unit 26 performs a presentation information selection process. This presentation information selection processing includes selection of a presentation target topic and determination of a presentation form.

  First, presentation target topic selection processing will be described. The presentation information selection unit 26 selects a topic having high topicality from the topics searched by the server 10 based on the topic topic information. A topic having high topicality that attracts people's attention has a high degree of interest in the electronic bulletin board. Therefore, the following tendency applies to the topic (bulletin board). First, since topics with high topicality are written by various people, there is a tendency for the total number of responses to be larger than topics with low topicality. Similarly, a topic with high topicality tends to have a larger number of written characters than a topic with low topicality. In addition, since topics with high topicality are written by various people, the writing time interval tends to be shorter than topics with low topicality. Similarly, a topic having a high topicality tends to have a shorter final writing elapsed time than a topic having a low topicality. Therefore, the presentation information selection unit 26 prepares an evaluation calculation formula that can obtain a higher evaluation for a topic having higher topicality in consideration of these tendencies. And the presentation information selection part 26 calculates the evaluation value about each searched topic using this evaluation formula based on topic topic information. The presentation information selection unit 26 compares the calculated evaluation value with a determination value and determines whether the topic has high topicality. Thereby, a topic with a high topicality (presentation target topic) presented to the user and a topic with a low topicality (non-presentation target topic) not presented to the user are selected.

  Next, presentation form determination processing will be described. The presentation information selection unit 26 determines a presentation form of an icon indicating a presentation target topic. In the present embodiment, the presentation form of the icons is changed according to the topicality of the topic or according to the distance between the current vehicle position and the topic. For example, in the case of changing the presentation form according to the topicality of the topic, the higher the evaluation (that is, the higher the topicality), the more emphasized the display is based on the evaluation value described above. is there. Also, for example, when the presentation form is changed according to the distance between the current vehicle position and the topic, the smaller the distance, the more emphasized the display is. The presentation form rules are preferably set in advance by the user, and the presentation information selection unit 26 displays the icon shape, size, blinking method, color, brightness, contrast, etc. in accordance with the rules. Set the parameters required for control. The presentation form determined for the topic to be presented is associated with the topic position information and stored in the bulletin board information storage unit 27 as bulletin board information (step 16).

  In step 17, the presentation information selection unit 26 reads the bulletin board information stored in the bulletin board information storage unit 27. In step 18, the presentation information selection unit 26 reads map information corresponding to the current position of the vehicle from the map data 22 based on the current position information. In step 19, the presentation information selection unit 26 presents necessary information. Thereby, the information presentation unit 21 presents the presentation target topic selected by the presentation information selection unit 26 together with the map information corresponding to the vehicle position information in association with the topic position information. At this time, the presentation information selection unit 26 refers to the bulletin board information and controls the information presentation unit 21 so that an icon indicating the presentation target topic is displayed according to the previously determined presentation form.

  FIG. 5 is an explanatory diagram for explaining navigation information and peripheral information displayed on the information presentation unit 21. FIG. 3A shows a display example of three-dimensional display. In this example, the topic to be presented is displayed as an icon consisting of concentric circles centered on the topic position information, and this icon is presented so that the radius increases as the distance from the current position of the host vehicle decreases. It has a form. Also, FIG. 2B shows a display example of two-dimensional display. Also in this example, the topic to be presented is displayed as an icon composed of concentric circles centering on the topic position information, and this icon has a presentation form in which the higher the topicality, the larger the radius. Yes. Also, as shown in FIGS. 4A and 4B, an icon corresponding to each topic to be presented also displays a label for identifying the topic such as a title of a bulletin board. .

  As described above, according to the present embodiment, the information presentation apparatus 20 acquires topic topic information indicating the topicality of a topic together with topics included in the search area as a search result from the server 10. The presentation information selection unit 26 uses topic topicality as a selection criterion, and selects a topic with high topicality from the topics included in the search area as a presentation target topic based on the acquired topic topic information. As a result, among topics included in the search area, a topic with high topicality is selectively presented to the user. By performing the topic selection by the information presentation apparatus 20, it is possible to reduce the trouble of the user distinguishing the topics by himself / herself as compared with the technique of presenting all the topics included in the search area. Further, by selecting topics from the viewpoint of topicality, the user can easily grasp information with high topicality, so that valuable information can be presented to the user.

  According to the present embodiment, the topic topic information preferably includes at least one of the total number of responses of the bulletin board, the number of written characters, the writing time interval, and the elapsed time from the last writing time. Thereby, the presentation information selection unit 26 can statistically evaluate the topicality.

  Furthermore, according to the present embodiment, the presentation information selection unit 26 determines the presentation form according to the topicality of the topic. Therefore, the user can easily distinguish the topicality according to the presentation form of the presented topic. This makes it possible to present information that is more valuable to the user.

  In many cases, the reliability of information written on bulletin boards on the Internet is unknown. This is because an unspecified number of users write information. Therefore, the administrator of the bulletin board gives points to users who provide highly reliable information and users who actively provide information, and gives points according to the points, It has been devised such as ranking.

  Therefore, the reliability of the user (writer) who writes information on the bulletin board is defined as the reliability of the information on the bulletin board that deals with the topic. May be selected. In this case, the server 10 associates the evaluation value (for example, points and ranking) evaluated by the server 10 with respect to the writer who writes information on the bulletin board as topic reliability information and associates it with the bulletin board that handles each topic. Store it. And the information presentation apparatus 20 acquires topic trust information with the topic contained in a search area as a search result from the server 10. FIG.

  In this case, in step 15 shown in FIG. 4, the presentation information selection unit 26 uses the reliability of the writer who wrote the information as a selection criterion, and the server 10 searches based on the acquired topic reliability information. A topic having information written by a writer with high reliability is selected as a presentation target topic from among the topics that have been written. As a result, among the topics included in the search area, a topic having information written by a highly reliable writer is selectively presented to the user. By performing the topic selection by the information presentation device 20, it is possible to reduce the trouble of the user distinguishing the topics by himself / herself as compared with the method of presenting all the topics included in the search area. Also, by selecting topics from the viewpoint of the reliability of writers who write information on bulletin boards, that is, the reliability of information on bulletin boards that handle topics, users can easily grasp highly reliable information. Therefore, it is possible to present information valuable to the user.

  In such a case, in step 15 shown in FIG. 4, the presentation information selection unit 26 determines that the presentation form changes according to the reliability of the writer who wrote the information in the presentation target topic. The presentation form may be determined. For example, the topic associated with a reliable writer is emphasized. Thereby, according to the presentation form of the presented topic, it is possible to determine the reliability of the writer who wrote the topic, so that the reliability of the topic information can be easily distinguished. As a result, it is possible to present information valuable to the user.

  In this embodiment, the presentation information selection unit 26 calculates an evaluation value for evaluating topicality based on topic topic information. However, the present invention is not limited to this. For example, the server 10 may calculate an evaluation value based on at least one of the total number of responses on the bulletin board, the number of written characters, the writing time interval, and the elapsed time from the last writing time, and may manage this as topic topic information. . That is, the presentation information selection unit 26 only needs to select a presentation target topic from the topics in the search area based on some information. In this embodiment, the server 10 sets a search area for searching for a topic based on the current position information transmitted from the information presentation device 20. However, this search area may be set by the information presentation device 20 based on the current position information, and the server 10 may search for a topic in the set search area.

(Second Embodiment)
The information presentation system 1 according to the second embodiment of the present invention will be described below. FIG. 6 is an overall configuration diagram of the information presentation system 1 according to the second embodiment. The point in which the information presentation system 1 according to the second embodiment differs from that of the first embodiment is that a topic is selected according to the interest of the user who uses the information presentation device 20, and the presentation form is determined. There is. The system 1 further includes electronic information devices such as a PC 40 and a mobile phone 50 in addition to the server 10 and the information presentation device 20 described in the first embodiment. The PC 40 and the mobile phone 50 can transmit information to and from the server 10 via the network. In addition, about the same structure as 1st Embodiment, description is abbreviate | omitted and hereafter, a change point is demonstrated.

  FIG. 7 is a block configuration diagram of the server 10 according to the second embodiment. As shown in the figure, the server 10 includes an ID management unit 14, a position information database 15, a browsing history storage unit 16, and an interest information storage unit 17 in addition to the configuration shown in the first embodiment.

  As will be described later, the ID management unit 14 identifies which user is accessing based on the ID transmitted when the information presentation apparatus 20 accesses the server 10. The ID management unit 14 also identifies which information presentation device 20 the user uses when the user accesses the server 10 using a different ID from the PC 40 or the mobile phone 50. A database showing the correspondence between the ID of the information presentation device 20 and the ID of the PC 40 or the mobile phone 50 is provided. Therefore, even if the PC 40 or the mobile phone 50 is used to access with a different ID, it is possible to specify which information presentation device 20 the user uses.

  As described in detail in the first embodiment, the location information database 15 is a database in which point information such as a topic name, address, or telephone number is associated with topic location information.

  The browsing history storage unit 16 stores an access history such as browsing a bulletin board for each user who uses the information presentation device 20. The access history of each user is stored in association with the ID assigned to the user. FIG. 8 is an explanatory diagram for explaining the browsing history storage unit 16, (a) is an explanatory diagram showing the number of accesses to the bulletin board, and (b) is an explanatory diagram showing the number of accesses for the genre of the bulletin board. . For example, if there are bulletin boards that handle different topics in the bulletin board from “A” to “Z”, the browsing history storage unit 16 stores the identifier of the bulletin board accessed by the user, as shown in FIG. The frequency (that is, the number of accesses) is stored. Further, each bulletin board A to Z is associated with a genre (for example, genre “A” to “C”) classified according to the type of topic handled by the bulletin board A to Z. As shown in b), the identifier of the genre of the bulletin board accessed by the user and the frequency (that is, the number of accesses) are stored. As for the genre of the bulletin board, when setting up the bulletin board or writing information on the bulletin board, the genre of the bulletin board is specified in advance by selecting from the prepared categories A to C. Is preferred.

  The interest information storage unit 17 stores interest information related to individual users. The interest information of each user is stored in association with the ID assigned to the user. This interest information is obtained by referring to the access history stored in the browsing history storage unit 16 and statistically processing the access history. The bulletin board having the highest number of user accesses and the number of user accesses are as follows. Contains information on the top M genres. In other words, this interest information indicates the degree of interest of the user with respect to the topic.

  FIG. 9 is a block configuration diagram of the information presentation device 20 according to the second embodiment. As shown in the figure, the information presentation device 20 further includes an ID output unit (ID output means) 29 in addition to the configuration shown in the first embodiment. The ID output unit 29 outputs an ID for identifying a user to the server 10 when the information presentation device 20 accesses the server 10. This ID is distributed from the administrator of the server 10 to the user on the assumption that the information presentation device 20 accesses the server 10.

  Below, the information presentation procedure by the information presentation system 1 which concerns on the 2nd Embodiment of this invention is demonstrated. First, prior to the description of the information presentation procedure by the information presentation system 1, the server-side processing performed as a premise thereof will be described.

  FIG. 10 is a flowchart showing a browsing history creation procedure by the server 10. This process is executed by accessing the server 10 by the information presentation device 20 or the PC 40 or the mobile phone 50 used by the user of the information presentation device 20.

  First, in step 20, the ID management unit 14 specifies the ID of the accessing user based on the ID transmitted from the user side. Accordingly, access to the electronic bulletin board is permitted for the user.

  In step 21, the bulletin board management unit 11 stores the bulletin board accessed by the user in the browsing history storage unit 16. Specifically, as shown in FIG. 8, for example, when the user accesses the bulletin board C, the bulletin board management unit 11 searches the browsing history storage unit 16 based on the ID, and stores the corresponding access history. Read. Then, in the read access history, the access count of the bulletin board C accessed by the user is increased by “1”. If the data corresponding to the currently accessed bulletin board does not exist in the access history, a new bulletin board item is added as the number of accesses “1”. Further, the bulletin board management unit 11 increases the number of accesses of the genre into which the bulletin board C accessed by the user is classified by “1”. Similarly, when there is no data corresponding to the currently accessed genre in the access history, a new genre item is added as the number of accesses “1”.

  In step 22, the bulletin board management unit 11 determines whether or not the bulletin board accessed by the user has changed. If an affirmative determination is made in step 22, that is, if the user accesses another bulletin board from the current bulletin board, the process returns to step 21. Then, the bulletin board management unit 11 updates the access history according to the procedure described above. On the other hand, if a negative determination is made in step 22, that is, if the user has not changed access to the bulletin board, the process proceeds to step 23.

  In step 23, the bulletin board management unit 11 determines whether the user has terminated access. If a negative determination is made in step 23, that is, if the user has not terminated access, the process returns to step 22 and the bulletin board management unit 11 again determines whether or not the bulletin board accessed by the user has changed. judge. On the other hand, when an affirmative determination is made in step 23, that is, when the user ends access, this processing ends.

  When the browsing history is created according to such a series of procedures, the bulletin board management unit 11 updates the interest information of the user stored in the interest information storage unit 17.

  Based on such processing, the information presentation procedure by the information presentation system 1 will be described below. FIG. 11 is a flowchart showing an information presentation procedure according to the second embodiment. The procedure shown in this flowchart is started when the information presentation device 20 that is a navigation device is turned on. When this procedure is started, the contents stored in the bulletin board information storage unit 27 are cleared as initial processing. First, at step 40, the current position output unit 23 detects the current position of the vehicle, and outputs the detected current position as vehicle position information.

  In step 41, it is determined whether a peripheral information acquisition request for requesting acquisition of peripheral information has been input by the user. If a negative determination is made in step 41, that is, if there is no peripheral information acquisition request, the procedure from step 42 to step 48 is skipped and the process proceeds to step 49 described later. On the other hand, if an affirmative determination is made in step 41, that is, if there is a peripheral information acquisition request, the process proceeds to step 42.

  In step 42, the ID output unit 29 outputs an ID to the server 10. In step 42, as in step 12 shown in FIG. 4, the peripheral information search unit 24 instructs the server 10 to acquire peripheral information.

  When the communication unit 12 of the server 10 receives the ID and peripheral information acquisition instruction, in step 43, the ID management unit 14 specifies the accessed user based on the ID transmitted from the information presentation device 20 side. In step 44, the bulletin board management unit 11 searches the interest information storage unit 17 based on the ID, and specifies the interest information associated with the ID.

  In step 45, the bulletin board management unit 11 searches for relevant information in the bulletin board. Specifically, the bulletin board management unit 11 sets a predetermined range (for example, within a radius of 500 m) as a search area based on the vehicle position information. The bulletin board management unit 11 searches the bulletin board information storage unit 13 based on the topic position information, and specifies the bulletin board whose topic position information is included in the search area. Then, the bulletin board management unit 11 searches the bulletin board information storage unit 13 based on the identified bulletin board identifier, and identifies the topic of the bulletin board (for example, the title of the bulletin board). Further, the bulletin board management unit 11 reads the topic position information associated with the identified bulletin board from the bulletin board information storage unit 13.

  In step 46, the bulletin board management unit 11 associates the topic position information with the identifier of the corresponding bulletin board for each topic in the search area, and transmits them to the information presentation apparatus 20 as bulletin board information. The bulletin board management unit 11 also transmits user interest information as bulletin board information via the communication unit 12.

  When the communication unit 25 of the information presentation device 20 acquires a search result (bulletin board information) from the server 10, in step 47, the presentation information selection unit 26 performs a presentation information selection process. This presentation information selection processing includes selection of a presentation target topic and determination of a presentation form.

  First, presentation target topic selection processing will be described. In the present embodiment, the presentation information selection unit 26 uses the degree of interest of the user with respect to the topic as a selection criterion, and the user's interest from the topics searched by the server 10 based on the acquired interest information. A topic with a high degree is selected as a presentation target topic. Since there is a high possibility that a topic that the user is interested in has accessed a bulletin board that handles the topic in advance, the number of accesses tends to be higher as the bulletin board that handles the topic of high interest. As described above, since the interest information includes the bulletin board frequently accessed by the user or the genre of the bulletin board as information, the presentation information selection unit 26 selects the interest information from the topics in the search area. Select the topic that corresponds to. Thereby, a topic with a high degree of interest (presentation target topic) to be presented to the user and a topic with a low degree of interest (non-presentation target topic) not presented to the user are selected.

  Next, presentation form determination processing will be described. The presentation information selection unit 26 determines a presentation form of an icon indicating a presentation target topic. In the present embodiment, the icon presentation form is changed according to the degree of interest of the user with respect to the topic. Therefore, the presentation information selection unit 26 refers to the interest information and determines the presentation form according to the access frequency of the bulletin board that handles the topic to be presented or its genre. For example, a topic handled by a bulletin board or genre that is frequently accessed is highlighted. Specifically, when the presentation target topic is displayed with an icon made of concentric circles, the presentation target topic corresponding to a bulletin board or genre that has a history of the number of accesses of 20 or more is displayed with a radius R1 (R1> 0). In addition, a presentation target topic having an access count of 5 to 19 is displayed with a radius R2 (R2 <R1), and a presentation topic having an access count of 0 to 4 is a radius R3 (R3 <R2). Is displayed. In accordance with such rules, parameters necessary for display control such as icon shape, size, blinking method, color, brightness, and contrast are set. The presentation form determined for the topic to be presented is associated with the topic position information and stored in the bulletin board information storage unit 27 as bulletin board information.

  In step 49, the presentation information selection unit 26 reads the bulletin board information stored in the bulletin board information storage unit 27. In step 50, the presentation information selection unit 26 reads map information corresponding to the current position of the vehicle from the map data 22 based on the current position information. In step 51, the presentation information selection unit 26 presents necessary information. Thereby, the information presentation unit 21 presents the presentation target topic selected by the presentation information selection unit 26 together with the map information corresponding to the vehicle position information in association with the topic position information. At this time, the presentation information selection unit 26 refers to the bulletin board information and controls the information presentation unit 21 so that an icon indicating the presentation target topic is displayed according to the previously determined presentation form.

  Thus, according to the present embodiment, the ID output unit 29 outputs the user ID to the server 10. When the user accesses the server 10 based on the output of this ID, the user is identified from the ID, an access history for the topic is created, and the user's interest in the topic is determined based on the access history. The server 10 creates the interest information to be shown. Moreover, in this embodiment, the information presentation apparatus 20 acquires interest information with the topic contained in a search area as a search result. Then, the presentation information selection unit 26 uses the degree of interest of the user with respect to the topic as a selection criterion. Based on the acquired interest information, a topic with a high degree of interest is presented from the topics included in the search area. Select as a topic. As a result, among the topics included in the search area, topics with a high degree of interest of the user are selectively presented to the user. By performing the topic selection by the information presentation device 20, it is possible to reduce the trouble of the user distinguishing the topics by himself / herself as compared with the method of presenting all the topics included in the search area. Further, by selecting topics from the viewpoint of the degree of interest of the user, it is possible to present information that is of interest to the user, so that it is possible to present information that is valuable to the user.

  Furthermore, according to the present embodiment, when presenting the selected presentation target topic, the presentation information selection unit 26 changes the presentation form according to the degree of interest in the topic. Therefore, the degree of interest can be easily determined according to the topic presentation form. This makes it possible to present information that is more valuable to the user.

  In the second embodiment, the information presentation apparatus 20 can browse and write a bulletin board using the input unit 28 (the same applies to the PC 40 and the mobile phone 50). Therefore, when the user visits the place based on the topic presented as information, the user can make a comment or an evaluation regarding the topic. Information evaluated by the server 10 in accordance with a standard defined in advance (for example, a 10-point evaluation) is transmitted to the server 10 as reply information. In other words, the reply information is information returned by the user who has accessed the information on the bulletin board after evaluating the reliability of the information, and topic reliability information indicating the reliability of the information on the bulletin board that handles this topic. Also works.

  In this case, as will be described later, when the bulletin board management unit 11 receives reply information for the bulletin board that handles a certain topic from the information presentation device 20, the bulletin board information storage unit 13 associates the identifier of the bulletin board with the reply information. To store. FIG. 12 is a flowchart showing the procedure of the reply process by the information presentation device 20. This process is executed by a user operating the information presentation device 20 by inputting reply information via the input unit 28 and making a transmission request for the reply information. As described above, the reply information is obtained by evaluating a topic with a score, and is associated with an identifier of a bulletin board that handles the topic.

  First, in step 30, the ID output unit 29 transmits the ID to the server 10 and the reply information input from the input unit 28 is transmitted to the server 10. In step 31, the ID management unit 14 specifies a user based on the ID transmitted from the information presentation device 20, and the bulletin board management unit 11 stores this reply information in the bulletin board information storage in association with the identifier of the corresponding bulletin board. Stored in the unit 13.

  In such a case, the presentation information selection unit 26 acquires reply information associated with the bulletin board that handles the corresponding topic, together with the search result of the topic. In step 47 shown in FIG. 11, the presentation information selection unit 26 uses the reply information as a selection criterion, and based on the obtained reply information, the topic handled by the bulletin board with high information reliability (that is, the reply information) (Topic with good evaluation) is selected as the presentation target topic. As a result, among topics included in the search area, a highly reliable topic as information is selectively presented to the user. By performing the topic selection by the information presentation device 20, it is possible to reduce the trouble of the user distinguishing the topics by himself / herself as compared with the method of presenting all the topics included in the search area. Also, by selecting topics from the viewpoint of the reliability of the reply information, that is, the information on the bulletin board that handles the topic, the user can easily grasp the highly reliable information, which is valuable for the user. Information can be presented.

  In step 47 shown in FIG. 11, the presentation information selection unit 26 determines the presentation form so that the presentation form changes based on the reliability of the information on the bulletin board that handles the reply information as the reply information. May be. In the reply information, the score for evaluating the topic is described. For example, when the presentation target topic is displayed with an icon made of concentric circles, the presentation target topic having a score of 5 or more included in the reply information is displayed with a radius R1 (R1> 0), and the score included in the reply information The presentation target topics with 4 or less points are displayed with a radius R2 (R2 <R1), and the presentation target topics not included in the reply information are displayed with a radius R3 (R3 <R2). In addition, when there are a plurality of reply information, the average value is used.

  As described above, when the selected presentation target topic is presented, the presentation information selection unit 26 may change the presentation form according to the reliability of the information related to the presentation target topic. Therefore, the reliability of information about a topic can be easily distinguished according to the presented form of the topic. This makes it possible to present information that is more valuable to the user.

(Third embodiment)
The information presentation system 1 according to the third embodiment of the present invention will be described below. The point in which the information presentation system 1 according to the third embodiment is different from that of the first embodiment is that a topic is selected according to a user's action history and its presentation form is determined. In addition, about the same structure as 1st Embodiment, description is abbreviate | omitted and hereafter, a change point is demonstrated.

  FIG. 13 is a block diagram showing an information presentation device 20 according to the third embodiment. As shown in the figure, in addition to the configuration shown in the first embodiment, the information presentation device 20 has an action history storage unit (action history storage means) 30 in which the action history of the host vehicle is stored. . FIG. 14 is an explanatory diagram for describing details of the action history storage unit 30. The behavior history storage unit 30 stores road link data indicating the correspondence between the road link on which the host vehicle has traveled and the frequency thereof, as shown in FIG. The action history storage unit 30 stores stop position data indicating the correspondence between the stop position (position information) where the vehicle engine is stopped and the frequency thereof, as shown in FIG. .

  FIG. 15 is a flowchart showing a procedure for creating an action history by the information presentation device 20. This process is started when the information presentation device 20 as a navigation device is turned on.

  First, in step 60, the presentation information selection unit 26 reads current position information that is the current position of the vehicle from the current position output unit 23. In step 61, the presentation information selection unit 26 performs a road link frequency update process. Specifically, the presentation information selection unit 26 specifies the current road link based on the read current position information and the map information read from the map data 22. Then, the presentation information selection unit 26 searches the action history storage unit 30 based on the identified road link, and updates the frequency associated with the current road link. When there is no data corresponding to the current road link, a new road link item is added to the road link data as frequency “1”.

  In step 62, the presentation information selection unit 26 determines whether the engine is stopped. If a negative determination is made in step 62, that is, if the engine is not stopped, the process returns to step 60. In step 60, the current position information is read again. In step 61, when the current road link is specified, it is determined whether or not this road link corresponds to the road link specified in the previous process. If it is a corresponding road link, the process proceeds to step 62. On the other hand, if the road link does not correspond, the action history storage unit 30 is searched based on the currently specified road link, the frequency associated with the current road link is updated, and the process proceeds to step 62.

  On the other hand, if a negative determination is made in step 62, the process proceeds to step 63. In step 63, the presentation information selection unit 26 searches the behavior history storage unit 30 based on the current position information, and updates the frequency associated with the current stop position. When there is no data corresponding to the current position information, a new stop position item is added to the stop position data as frequency “1”.

  Next, an information presentation procedure by the information presentation system 1 according to the third embodiment of the present invention will be described. Since the information presentation procedure according to the third embodiment is basically the same as that in the first embodiment, the change points will be described below with reference to FIG. 4 again.

  When the procedure from step 10 to step 14 is executed and the communication unit 25 of the information presentation device 20 receives the search result from the server 10, the presentation information selection unit 26 performs a presentation information selection process in step 15. In the presentation information selection process, a presentation target topic selection process and a presentation form determination process are performed.

  First, in the presentation target topic selection process, the presentation information selection unit 26 uses the action frequency of the own vehicle as a selection criterion for selecting the presentation target topic and the non-presentation target topic, and the action frequency of the own vehicle is low. A topic existing in the area, that is, a highly novel topic is selected as a presentation target topic. With regard to topics on the road that are frequently used by the user, there is a possibility that the user has already grasped the topic, and the novelty as the information tends to be low. Therefore, the presentation information selection unit 26 reads map data based on the current position information, and divides the map plane into a grid-like block group having a predetermined length (for example, about 50 m). Then, the presentation information selection unit 26 performs weighting for each block group. Specifically, the presentation information selection unit 26 refers to the road link data and the stop position data stored in the action history storage unit 30, and refers to the number of stops (frequency) and the number of travels ( Frequency) is calculated. The presentation information selection unit 26 associates the searched topic with the total value of the blocks including the topic. And the total value linked | related with each topic is compared with a determination value (for example, 100), and it is determined whether the action frequency in the area containing the topic is high. As a result, the searched topics can be selected from topics in areas with low behavioral frequency to be presented to the user (presentation target topics) and topics in areas with high behavioral frequency not presented to the user (non-presentation target topics). Done. In other words, selection of a highly novel topic (presentation target topic) to be presented to the user and a low novelty topic (non-presentation target topic) that is less required to be presented to the user is performed. Become.

  Then, in the presentation form determination process, the presentation information selection unit 26 determines the presentation form of the icon indicating the topic for the presentation target topic. In the present embodiment, the icon presentation form is changed according to the novelty of the topic. When the display form is changed according to the novelty of the topic, for example, based on the total value described above, the smaller the action history for the block including the topic, the more emphasized the display is. Specifically, when displaying the topic to be presented with an icon made up of concentric circles, a topic having a total value of 50 or more is displayed with a radius R1 (R1> 0), and the total value is 0 or more and 49 or less. A certain topic is displayed with a radius R2 (R2> R1). In accordance with such rules, parameters necessary for display control such as icon shape, size, blinking method, color, brightness, and contrast are set.

  In step 16 to step 19, the information presentation unit 21 presents the presentation target topic selected by the presentation information selection unit 26 in association with the topic position information together with the map information corresponding to the vehicle position information. At this time, the presentation information selection unit 26 refers to the bulletin board information and controls the information presentation unit 21 so that an icon indicating the presentation target topic is displayed according to the previously determined presentation form.

  Thus, according to this embodiment, the action history storage unit 30 of the information presentation device 20 stores the action history of the host vehicle. Then, the presentation information selection unit 26 uses the behavior frequency of the own vehicle as a selection criterion, and presents a topic that exists in an area where the behavior frequency of the own vehicle is low based on the behavior history read from the behavior history storage unit. Select as a topic. As a result, among the topics included in the search area, a topic with a low behavior frequency of the own vehicle, that is, a highly novel topic is selectively presented to the user. By performing the topic selection by the information presentation device 20, it is possible to reduce the trouble of the user distinguishing the topics by himself / herself as compared with the method of presenting all the topics included in the search area. Also, by selecting topics from the viewpoint of action frequency, it is possible to easily grasp new topics for the user, so that valuable information can be presented to the user.

  Further, in the present embodiment, when presenting the selected presentation target topic, the presentation information selection unit 26 changes the presentation form according to the action frequency of the host vehicle. Therefore, it is possible to easily distinguish a new topic that does not normally stop according to the presented form of the topic. This makes it possible to present information that is more valuable to the user.

  In the present embodiment, the action history is created using the stop position and the road link, but the action history may be created using each independently. Further, the action history is not limited to the stop position, and may be an engine start position.

  In addition, in the first to third embodiments described above, these are described in the individual embodiments according to the characteristics. However, any of these methods is combined to select a topic and determine a presentation form. Also good.

1 is an overall configuration diagram of an information presentation system 1 according to a first embodiment of the present invention. It is a block block diagram which shows the server 10 which concerns on 1st Embodiment. It is a block block diagram of the information presentation apparatus 20 which concerns on 1st Embodiment. It is a flowchart which shows the information presentation procedure which concerns on 1st Embodiment. It is explanatory drawing explaining the navigation information and periphery information which are displayed on the information presentation part. It is a whole block diagram of the information presentation system 1 which concerns on 2nd Embodiment. It is a block block diagram of the server 10 which concerns on 2nd Embodiment. It is explanatory drawing explaining the browsing history memory | storage part. It is a block block diagram of the information presentation apparatus 20 which concerns on 2nd Embodiment. 4 is a flowchart showing a browsing history creation procedure by the server 10. It is a flowchart which shows the information presentation procedure which concerns on 2nd Embodiment. It is a flowchart which shows the procedure of the reply process by the information presentation apparatus. It is a block diagram which shows the information presentation apparatus 20 which concerns on 3rd Embodiment. 4 is an explanatory diagram for explaining details of an action history storage unit 30. FIG. 4 is a flowchart showing a procedure for creating an action history by the information presentation device 20.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Information presentation system 10 Server 11 Bulletin board management part 12 Communication part 13 Bulletin board information storage part 14 ID management part 15 Location information database 16 Browsing history storage part 17 Interest information storage part 20 Information presentation apparatus 21 Information presentation part 22 Map data 23 Present position Output unit 24 Peripheral information search unit 25 Communication unit 26 Presentation information selection unit 27 Bulletin board information storage unit 28 Input unit 29 ID output unit 30 Action history storage unit

Claims (15)

In a server that manages a bulletin board capable of writing or browsing information via a network for each topic, and a vehicle information presentation device capable of transmitting information via the network,
Current position output means for detecting the current position of the host vehicle and outputting the detected current position as vehicle position information;
Search for topics included in a search area based on the vehicle position information by transmitting the vehicle position information output from the current position output means to the server storing topic position information indicating the position of each topic. Peripheral information search means for requesting the server to
Information acquisition means for acquiring search results of the topic from the server;
Among the search results of topics acquired by the information acquisition means based on a selection criterion for selecting a presentation target topic to be presented to a vehicle user and a non-presentation topic not to be presented to the user Presentation information selection means for selecting the presentation target topic from:
A vehicle information presentation device comprising: information presentation means for presenting a presentation target topic selected by the presentation information selection means in association with the topic position information together with map information corresponding to the vehicle position information . The information acquisition means acquires topic topic information indicating topicality of the topic together with topics included in the search area as the search result,
The presenting information selection means uses the topicality of a topic as the selection criterion, and selects a topic with high topicality as the presentation target topic based on the acquired topic topic information. The vehicle information presentation device according to claim 1.   The vehicle according to claim 2, wherein the topic topic information includes at least one of a total number of responses of a bulletin board that handles the topic, a number of written characters, a writing time interval, and an elapsed time from the last writing time. Information presentation device.   The said presentation information selection means determines the presentation form of the said presentation object topic so that a presentation form may change according to the topic property of a topic, It is any one of Claim 1 to 3 characterized by the above-mentioned. Vehicle information presentation device. The information acquisition means acquires topic trust information indicating the reliability of information on a bulletin board that handles the topic, together with topics included in the search area, as the search result,
The presentation information selection means uses the reliability of information on a bulletin board that handles topics as the selection criterion, and based on the acquired topic reliability information, a topic handled by a bulletin board with high information reliability is the presentation target The vehicle information presentation device according to claim 1, wherein the information is selected as a topic.   6. The vehicular information presentation apparatus according to claim 5, wherein the topic reliability information is an evaluation value obtained by evaluating the reliability of a writer who writes information on a bulletin board on the server side.   6. The vehicle information according to claim 5, wherein the topic trust information is reply information that a user who has accessed information on the bulletin board returns to the server after evaluating the reliability of the information. Presentation device.   The said presentation information selection means determines the presentation form of the said presentation object topic so that a presentation form may change according to the reliability of the information of the bulletin board which handles a topic, Any one of Claim 5 to 7 characterized by the above-mentioned. The vehicle information presentation device described in the paragraph. An ID output means for outputting the user ID to the server;
The information acquisition means indicates, as the search result, a topic included in the search area and a user's interest in the topic created based on a user's access history to the bulletin board specified by an ID. I have interest information,
The presentation information selection means uses a user's interest level with respect to a topic as the selection criterion, and selects a topic with a high user interest level as the presentation target topic based on the acquired interest information. The vehicle information presentation device according to claim 1, wherein the vehicle information presentation device is a vehicle information presentation device.   The vehicle information presentation according to claim 9, wherein the presentation information selection unit determines the presentation form of the presentation target topic so that the presentation form changes according to the degree of interest of the user with respect to the topic. apparatus. It further has an action history storage means for storing the action history of the own vehicle,
The presentation information selection means uses the action frequency of the own vehicle as the selection criterion, and based on the action history read from the action history storage means, a topic existing in an area where the action frequency of the own vehicle is low. The vehicular information presentation device according to claim 1, wherein the vehicular information presentation device is selected as the presentation target topic.   12. The vehicle information presentation device according to claim 11, wherein the presentation information selection unit determines the presentation form of the presentation target topic so that the presentation form changes according to the action frequency of the host vehicle. The information presenting means presents the presentation target topic by icon display,
The presentation information selection unit determines the presentation form so that at least one of the shape, size, blinking method, color, brightness, and contrast of the icon changes. The vehicle information presentation device according to any one of 4, 8, 10, and 12. In an information presentation method executed by a server that manages a bulletin board capable of writing or browsing information via a network for each topic, and a vehicle information presentation device capable of transmitting information via the network,
The current position of the host vehicle is output as vehicle position information, the output vehicle position information is transmitted to the server storing topic position information indicating the position of each topic, and the vehicle position information is used as a reference. Based on a selection criterion for requesting the server to search for topics included in a search area and selecting a presentation target topic to be presented to a vehicle user and a non-presentation topic not to be presented to the user Selecting the presentation target topic from the search results of topics acquired from the server, and presenting the selected presentation target topic in association with the topic position information together with the map information corresponding to the vehicle position information. An information presentation method characterized by In the information presentation system,
A server that manages for each topic a bulletin board that can write or view information via a network;
An information presentation device capable of communicating information with the server via a network;
The information presentation device includes:
Current position output means for detecting the current position of the host vehicle and outputting the detected current position as vehicle position information;
Search for topics included in a search area based on the vehicle position information by transmitting the vehicle position information output from the current position output means to the server storing topic position information indicating the position of each topic. Peripheral information search means for requesting the server to
Information acquisition means for acquiring search results of the topic from the server;
Based on a selection criterion for selecting a presentation target topic to be presented to the user of the vehicle and a non-presentation target topic not to be presented to the user, from among the search results acquired by the information acquisition means Presentation information selection means for selecting the presentation target topic;
Along with the map information corresponding to the vehicle position information, information presentation means for presenting the presentation target topic selected by the presentation information selection means in association with the topic position information,
The server
Bulletin board information storage means for storing topic position information indicating the position of a topic handled by each bulletin board;
An information presentation system comprising: a bulletin board management means for specifying a topic included in the search area by searching the bulletin board information storage means based on the topic position information.