JP2024026533A - Server device, terminal device, information presentation system, information presentation method, information presentation program, and recording medium - Google Patents

Abstract

An object of the present invention is to obtain information on preferences common to multiple users boarding a mobile object. A server 111 capable of communicating with a terminal 101 that moves with a mobile object corresponds to a life log database 114 that stores a life log indicating a user's action history, and a plurality of users who board the mobile object, respectively. A receiving unit 112 receives from the terminal 101 an information request including a plurality of pieces of identification information for identifying each of the plurality of users, and a receiving unit 112 that receives a life log of each of the plurality of users corresponding to the plurality of pieces of identification information included in the information request. It includes a common preference information acquisition unit 113 that searches and acquires common preference information including objects that a plurality of users have common interest in, and a transmission unit 115 that transmits the common preference information to the terminal 101. [Selection diagram] Figure 1

Description

The present invention relates to a server device, a terminal device, an information presentation system, an information presentation method, an information presentation program, and a recording medium that present information common to a plurality of users on the move. However, the use of the present invention is not limited to server devices, terminal devices, information presentation systems, information presentation methods, information presentation programs, and recording media.

BACKGROUND ART Conventionally, a navigation system has been disclosed that acquires points related to each of a plurality of users riding in a vehicle from a server and presents them to the users as possible stopover points (see, for example, Patent Document 1 below).

Patent No. 5122646

However, in the conventional technology described above, points related to each of a plurality of users are presented as stop-off point candidates, so as the number of passengers increases, the number of stop-off place candidates also increases. An example is a problem in which it is difficult to determine.

In order to solve the above problems and achieve the object, a server device according to the invention of claim 1 is a server device that can communicate with a terminal device that can be used in a mobile body, and is a server device that can communicate with a terminal device that can be used in a mobile body. a receiving unit that receives information for identifying a user from the terminal device; a common preference information obtaining unit that obtains common preference information including objects in which the plurality of users have a common interest; a transmitting means for transmitting to the device, and the transmitting means transmits the common preference information in response to an increase or decrease in the number of users boarding the mobile object.

Further, the terminal device according to the invention of claim 9 is a terminal device that can be used in a mobile body, and requests common preference information including objects in which a plurality of users boarding the mobile body have common interests. The transmitting means includes a transmitting means for transmitting an information request to an external device, a receiving means for receiving the common preference information from the external device, and a detecting means for detecting an increase or decrease in the number of users boarding the mobile object. , the information request is transmitted to the external device using an increase or decrease in the number of users by the detection means as a trigger.

Further, an information presentation system according to an eleventh aspect of the invention is an information presentation system comprising a terminal device that can be used in a mobile body and a server device existing outside the mobile body, the terminal device being a first transmitting means for transmitting an information request to an external device for requesting common preference information including an object in which a plurality of users aboard a mobile body have a common interest; and a first transmitting means for receiving the common preference information from the external device. 1 receiving means, and a detecting means for detecting an increase or decrease in the number of users boarding the mobile body, and the first transmitting means transmits the information request to the external device using the increase or decrease in the number of users detected by the detecting means as a trigger. The server device includes second receiving means for receiving information identifying a plurality of users boarding the mobile object from the terminal device, and common preference information including objects in which the plurality of users have common interests. common preference information acquisition means for acquiring;
a second transmitting means for transmitting the common preference information to the terminal device, the second transmitting means transmitting the common preference information in response to an increase or decrease in the number of users boarding the mobile body; It is characterized by

Further, the information presentation method according to the invention of claim 12 is an information presentation method performed by a server device capable of communicating with a terminal device usable in a mobile body, the server device comprising a plurality of terminal devices on board the mobile body. a step of receiving information identifying a user from the terminal device; a step of acquiring common preference information including objects in which the plurality of users have common interests; and a step of transmitting the common preference information to the terminal device. The transmitting step is characterized in that the common preference information is transmitted in response to an increase or decrease in the number of users boarding the mobile object.

Furthermore, an information presentation program according to a thirteenth aspect of the invention is characterized in that it causes a computer to execute the information presentation method according to the twelfth aspect.

Furthermore, a recording medium according to the fourteenth aspect of the invention is characterized in that the information presentation program according to the thirteenth aspect is recorded thereon.

FIG. 1 is a block diagram showing an example of the functional configuration of an information presentation system according to an embodiment. FIG. 2 is a chart showing an example of the contents of the life log DB according to the embodiment. FIG. 3 is a flowchart illustrating an example of the processing procedure of the server according to the embodiment. FIG. 4 is a block diagram showing an example of the hardware configuration of the navigation device. FIG. 5 is a flowchart showing an example of the processing procedure of the information presentation system. FIG. 6 is a flowchart showing a detailed example of the common preference information search process among the processes performed by the information presentation system. FIG. 7 is a diagram showing trends in meal preferences of users. FIG. 8 is a diagram showing an example of presentation of common preference information of the navigation device. FIG. 9 is a diagram for explaining a specific example of the common preference information search process shown in FIG. 6. (Part 1) FIG. 10 is a diagram for explaining a specific example of the common preference information search process shown in FIG. 6. (Part 2) FIG. 11 is a diagram for explaining a specific example of the common preference information search process shown in FIG. 6. (Part 3) FIG. 12 is a diagram for explaining a specific example of the common preference information search process shown in FIG. 6. (Part 4) FIG. 13 is a diagram for explaining a specific example of the common preference information search process shown in FIG. 6. (Part 5)

(Embodiment)
DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a server device, a terminal device, an information presentation system, an information presentation method, an information presentation program, and a recording medium according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a block diagram showing an example of the functional configuration of an information presentation system according to an embodiment. The information presentation system 100 according to the embodiment can be configured by a terminal (terminal device) 101 and a server (server device) 111, and the terminal 101 and the server 111 communicate information with each other via a communication network such as wireless. It is possible.

The terminal 101 moves together with the mobile object. For example, it is provided in a moving body such as a vehicle. In addition, people who move may carry it with them. This terminal 101 includes an identification information acquisition section 102, a transmission section 103, a reception section 104, and a presentation section 105.

The identification information acquisition unit 102 acquires a plurality of pieces of identification information (ID) for identifying the users, corresponding to each of the plurality of users boarding the mobile object.

The transmitter 103 transmits an information request to the server 111 at a predetermined timing. This information request is sent to request common preference information including objects in which other users accompanying the user of the terminal 101 (for example, multiple users boarding a mobile object) have a common interest. This information request may be transmitted manually by the user at any timing, but, as will be described later, the information request can be automatically transmitted by the terminal 101 at a predetermined trigger.

The information request includes identification information of a plurality of users acquired by the identification information acquisition unit 102, the current position of the mobile body detected by GPS etc., date and time, elapsed time since the start of travel, trigger type information at the time of the information request, etc. is included. The information request is sent to the server at the timing when a detection unit (not shown) detects the time, the elapsed time of the movement of the moving object, the position of the moving object, an increase or decrease in the number of companions (passengers of the moving object), changes in the passenger's biological information, etc. 111, and the detection information is included in the information request as trigger type information.

The receiving unit 104 receives, from the server 111, common preference information including objects in which a plurality of users aboard the mobile object have a common interest. Further, the receiving unit 104 can receive common preference information including objects excluding objects in which at least one of the plurality of users is not interested. The presenting unit 105 presents the common preference information received by the receiving unit 104 to the user through display, audio, or the like.

The server 111 includes a receiving section 112, a common preference information acquiring section 113, a life log database (DB) 114, and a transmitting section 115.

The receiving unit 112 receives the information request for common preference information transmitted by the terminal 101. The life log DB 114 stores a life log indicating a user's action history in an accumulable manner.

The common preference information acquisition unit 113 searches the lifelog DB 114 for the lifelogs of the plurality of users corresponding to the plurality of identification information included in the information request, and searches the lifelogs of the plurality of users corresponding to the plurality of identification information included in the information request, and searches the lifelogs of the plurality of users corresponding to the plurality of identification information included in the information request. Obtain preference information. The transmitter 115 transmits the common preference information to the terminal 101.

The common preference information acquisition unit 113 may acquire common preference information including objects excluding objects in which at least one of the plurality of users is not interested. In addition, the common preference information acquisition unit 113 searches for preferences common to multiple users based on facilities visited in the past or types of products purchased in the past included in the respective life logs of the multiple users, and Information on facilities related to preferences can be acquired as common preference information. In addition, the common preference information acquisition unit 113 searches for preferences common to multiple users based on the types of content viewed in the past included in the life logs of each of the multiple users, and searches for content related to the common preferences. Information can be acquired as common preference information.

Furthermore, the common preference information acquisition unit 113 responds to the time at which this information request was made, or the elapsed time since a plurality of users boarded the mobile object, which is included in the information request received by the reception unit 112. You can change the genre of your search preferences. This makes it possible to cope with cases where the elapsed time within the moving body becomes longer.

The above-mentioned life logs are accumulated and recorded in the life log DB 114 based on the user's actions. For example, action history data is transmitted from the user's terminal 101 to the server 111, and a control unit (not shown) of the server 111 accumulates and records the action history data for each user in the lifelog DB 114 as a lifelog.

For example, the terminal 101 stores an ID unique to the user or the terminal 101, and when the user performs various actions using the terminal 101, the terminal 101 acquires action history data and sends it to the server 111. , the server 111 constructs a life log DB 114 for each user.

The action history registered in the life log DB 114 includes, for example, the following 1. ~7. can be mentioned.
1. Content viewed by the user In an environment where the terminal 101 such as a mobile phone or smartphone, other PCs, TVs, HDD recorders, audio devices, etc. are networked by DLNA (Digital Living Network Alliance: registered trademark), etc., the server 111 is , it is possible to obtain the user's content viewing history.
2. Web Site Browsing History Cloud technology allows the server 111 to acquire the history of Web sites that individuals have viewed on their terminals 101, PCs, and the like.
3. Product Purchase History The server 111 can acquire a history of products purchased through Internet shopping or credit card payments using mobile terminals and their prices.

4. SNS, Blogs, Emails User's SNS, blogs, or emails sent/received by the user contain text that may be related to personal preferences, such as location names, facility names, artist names, content names, food names, etc. If the text is found, the terminal 101 or the server 111 can extract the text and the server 111 can obtain it.
5. Schedule The server 111 can acquire the personal schedule registered in the terminal 101, cloud server, etc.

6. Stay History Using the GPS function of the terminal 101, etc., the server 111 can obtain a history of when, where, and for how long the user has stayed, as well as the type of facility where the user has stayed. Additionally, the server 111 can also acquire facilities searched by the user using the navigation function, destinations set, routes traveled, stops, and the like.
7. Companion Information When providing a lifelog service constructed by the server 111 to a user, the location of the terminal 101 owned by a person (another user) registered as an acquaintance of the user may be different from that of the user's own terminal 101 at the same time. If the location matches, the server 111 can set the other user as the user's companion and register it in the life log DB 114.

In the example of FIG. 1, the configuration is such that the user's behavior history is transmitted from the terminal 101 to the server 111, but the configuration is not limited to this, and the user's behavior history can be transmitted from the home PC, in-vehicle navigation device, etc. to the server 111 in the same way as the terminal 101. , the server 111 may construct a life log DB 114 based on the user's action history.

Further, the user's own life log data registered in the life log DB 114 may be viewable and editable by the user himself/herself. For example, if the user's companion on a certain day, purchased products, prices, etc. cannot be automatically registered in the life log DB 114, the user may manually register the information.

FIG. 2 is a chart showing an example of the contents of the life log DB according to the embodiment. FIG. 2 is an example of data of the life log 200 of user A recorded in the life log DB 114, and the life log 200 for each user is accumulated and recorded in the life log DB 114. Based on the information sent from the terminal 101 as an action history, the life log DB 114 includes, for each action history category 201, date 202, time 203, day of the week 204, facility name (content name) 205, purchased product 206, price 207, companion Information on items such as person 208 is accumulated and recorded.

Additionally, the server 111 generates a search genre 209 and preference item information 210 and stores them as index information when searching for information on the life log 200. The search genre 209 is automatically added by the server 111 based on the information of the facility name (content name) 205, and the preference item information 210 is automatically added by the server 111 based on the information of the purchased product 206.

For example, if the facility name (content name) 205 is "Italian restaurant A", index information of "meal" at a restaurant is added as the search category 209. When the purchased product 206 is "peperoncino", index information of "Italian food" is added as preference item information 210. The index information is used as an information search key for the life log DB 114 when the terminal 101 requests information.

FIG. 3 is a flowchart illustrating an example of the processing procedure of the server according to the embodiment. Based on an information request from the terminal 101, the server 111 provides the terminal 101 with common preference information common to users accompanying the user of the terminal 101.

When the receiving unit 112 receives an information request from the terminal 101 (step S301), the server 111 sets a genre to be searched by the common preference information obtaining unit 113 (step S302). This genre is set based on trigger type information included in the information request transmitted by the terminal 101.

Next, in the server 111, the common preference information acquisition unit 113 accesses the life log DB 114 and searches for common preference information common to the accompanying users (step S303). At this time, the common preference information acquisition unit 113 searches the life log DB 114 for information using the index information (search genre 209, preference item information 210) corresponding to the trigger type information included in the information request transmitted by the terminal 101 as a search key. I do. Further, information on the accompanying person is obtained based on the identification information included in the information request, and an information search is narrowed down (filtered) using information on the accompanying person 208 that matches the accompanying person. Furthermore, the information search is narrowed down (filtered) based on the time, day of the week, etc. included in the information request.

For example, if the trigger type information is time and the current time is meal time, the common preference information acquisition unit 113 narrows down the search genre 209 to “meal” (filtered) to the life log DB 114. ) Perform information searches.

When searching for information on the life log DB 114, information on the companion is obtained based on the identification information included in the information request, and information on the companion 208 that matches the companion is searched. Then, a plurality of pieces of common preference information (meals in the above example) that are common to the companions are selected. For example, in the example of FIG. 2, when the companions of user A are "Mr. B and Mr. C", the common preference information of the date and time 203 "lunch time (12:30)" is set to ""Italian Restaurant A" is selected.

The common preference information selected by the common preference information 113 is transmitted to the terminal 101 via the transmission unit 115 (step S304). The common preference information transmitted to the terminal 101 is not limited to the facility name 205, but may include some or all of the items from date 202 to companion 208.

Thereby, the terminal 101 that has received the common preference information from the server 111 can present the common preference information, which is the preference common to the accompanying person, to the user through the presentation unit 105 through display, voice, or the like.

According to the embodiments described above, the terminal automatically requests common preference information of companions from the server based on various triggers such as time of day. In response to an information request from a terminal, the server searches the life log DB for common preference information common to the companions. The server can send the common preference information to the terminal and present it to the user of the terminal.

Thereby, the user can easily obtain common preference information suitable for the accompanying person. For example, it is possible to receive a suggestion of a restaurant where a meal suitable for the current companion can be served. At this time, the user can save the effort of inputting a search key to search for information.

Since the life log DB is constructed based on the past behavior history of each companion, it becomes possible to provide appropriate common preference information for each companion. Since it is possible to obtain common preference information for each companion even if the companions are different, the user can receive appropriate common preference information for each companion even if the user forgets past behavior history. You will be able to do this.

Next, examples of the present invention will be described. In the embodiment, a navigation device mounted on a user's mobile body (vehicle) is used as the terminal 101 and is communicatively connected to the server 111.

(Hardware configuration of navigation device)
FIG. 4 is a block diagram showing an example of the hardware configuration of the navigation device. In FIG. 4, the navigation device 400 includes a CPU 401, ROM 402, RAM 403, magnetic disk drive 404, magnetic disk 405, optical disk drive 406, optical disk 407, audio I/F (interface) 408, microphone 409, speaker 410, input device 411, It includes a video I/F 412, a display 413, a camera 414, a communication I/F 415, a GPS unit 416, and various sensors 417. Each component 401 to 417 is connected by a bus 420, respectively.

CPU 401 is in charge of overall control of navigation device 400 . The ROM 402 records a boot program and a content output program. RAM 403 is used as a work area for CPU 401. That is, the CPU 401 controls the entire navigation device 400 by executing various programs recorded in the ROM 402 while using the RAM 403 as a work area.

The magnetic disk drive 404 controls reading/writing of data to/from the magnetic disk 405 under the control of the CPU 401 . The magnetic disk 405 records data written under the control of the magnetic disk drive 404. As the magnetic disk 405,
For example, an HD (hard disk) or FD (flexible disk) can be used.

Further, the optical disk drive 406 controls reading/writing of data on the optical disk 407 under the control of the CPU 401. The optical disc 407 is a removable recording medium from which data is read under the control of the optical disc drive 406. A writable recording medium can also be used as the optical disc 407. In addition to the optical disk 407, an MO, a memory card, etc. can be used as the removable recording medium.

Examples of information recorded on the magnetic disk 405 and the optical disk 407 include map data, vehicle information, images, driving history, and the like. Map data is used when searching for a route in a navigation system, and includes background data that represents features such as buildings, rivers, ground surfaces, and energy supply facilities, and road shape data that represents the shape of the road using links and nodes. This is vector data that includes.

Audio I/F 408 is connected to a microphone 409 for audio input and a speaker 410 for audio output. The audio received by the microphone 409 is A/D converted within the audio I/F 408 . The microphone 409 is installed, for example, on the dashboard of the vehicle, and the number of microphones 409 may be singular or plural. The speaker 410 outputs audio obtained by D/A converting a predetermined audio signal within the audio I/F 408 .

Examples of the input device 411 include a remote control, a keyboard, a touch panel, and the like having a plurality of keys for inputting characters, numbers, various instructions, and the like. The input device 411 may be implemented in any one of a remote control, a keyboard, and a touch panel, but may also be implemented in multiple formats.

Video I/F 412 is connected to display 413 and camera 414. Specifically, the video I/F 412 includes, for example, a graphics controller that controls the entire display 413, a buffer memory such as VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and output from the graphics controller. The control IC is configured to control the display 413 based on the image data displayed.

The display 413 displays icons, cursors, menus, windows, and various data such as characters and images. As the display 413, for example, a TFT liquid crystal display, an organic EL display, or the like can be used.

The camera 414 captures an image of the outside of the vehicle, including, for example, a road. The video may be either a still image or a video. For example, the outside or inside of the vehicle may be photographed by the camera 414, the photographed image may be analyzed by the CPU 401, or the image may be sent to the magnetic disk 405, optical disk 407, etc. via the video I/F 412. output to recording media.

Communication I/F 415 is connected to a network via wireless, and functions as an interface for navigation device 400 and CPU 401. Communication networks that function as networks include in-vehicle communication networks such as CAN and LIN (Local Interconnect Network), public telephone networks, mobile phone networks, DSRC (Dedicated Short Range Communication), LAN, and WAN. The communication I/F 415 is, for example, a public line connection module, an ETC (nonstop automatic toll payment system) unit, an FM tuner, a VICS (Vehicle Information and Communication System: registered trademark)/beacon receiver, or the like.

GPS unit 416 receives radio waves from GPS satellites and outputs information indicating the current position of the vehicle. The output information of the GPS unit 416 is used together with the output values of various sensors 417, which will be described later, when the CPU 401 calculates the current position of the vehicle. The information indicating the current position is information specifying one point on the map data, such as latitude, longitude, and altitude.

Various sensors 417 output information for determining the position and behavior of the vehicle, such as a vehicle speed sensor, acceleration sensor, angular velocity sensor, and tilt sensor. The output values of the various sensors 417 are used by the CPU 401 to calculate the current position of the vehicle and to calculate the amount of change in speed and direction.

The function of the presentation unit 105 in FIG. 1 can be realized using the display 413 shown in FIG. 4. Further, the functions of the transmitter 103 and the receiver 104 in FIG. 1 can be realized using the communication I/F 415 in FIG. 4. Terminal 101 shown in FIG. The function of the identification information acquisition unit 102 and the control function of the entire terminal 101 are realized.

(Example of server configuration)
The server 111 described above also has a configuration similar to that in FIG. 4. Note that this server 111 does not require the camera 414, GPS unit 416, various sensors 417, etc. shown in FIG. The server 111 shown in FIG. 1 is configured by the CPU 401 executing a predetermined program using programs and data recorded in the ROM 402, RAM 403, magnetic disk 405, optical disk 407, etc. shown in FIG. The function of the common preference information acquisition unit 113 and the control function of the entire server 111 are realized.

(Processing example of information presentation system)
FIG. 5 is a flowchart showing an example of the processing procedure of the information presentation system. An example of processing for receiving presentation of common preference information from the server 111 will be described using the navigation device 400 as an example of the above terminal 101.

First, the navigation device 400 acquires the IDs of each of a plurality of passengers (accompanying persons of the user of the navigation device 400) boarding the vehicle (step S501). In addition to manual input by each passenger, the ID of each passenger can be obtained by, for example, having the navigation device 400 wirelessly communicate with a terminal such as a mobile phone owned by each passenger to obtain the ID of the user or terminal from the mobile terminal. Can be obtained. In addition, it is also possible to specify a passenger registered in advance in the navigation device 400 based on an image taken by a camera inside the vehicle and a voice input from a microphone, and obtain a corresponding ID.

Next, the navigation device 400 determines whether a trigger for acquiring information has been detected (step S502). Navigation device 400 includes a detection unit (not shown) that detects a predetermined situation change. Then, the navigation device 400 waits for a situation change by the detection unit (step S502: No loop), and if there is a situation change (step S502: Yes), the navigation device 400 uses this situation change as a trigger to transmit an information request to the server 111 ( Step S503).

To explain the triggers of situation changes detected by the navigation device 400 by type of information, for example, when the microphone 409 detects a voice such as "I'm hungry" related to a specific keyword (meal) during a conversation in the car, When a timer, etc. built into the CPU 401 detects a preset time (lunch time), when the vehicle starts running due to a change in speed of the speed sensor, etc., when a predetermined time has elapsed as measured by the timer from the start of running. When the camera 414 detects the sleepy facial expressions of the passengers, when the GPS unit 416 detects that the current position of the vehicle has reached a predetermined position, the sensor for each seat, the camera 414, etc. detect the increase or decrease of the number of passengers. The navigation device 400 may receive biological information such as hunger and fatigue of the passenger detected by a biological sensor such as a wearable terminal worn by the passenger. Alternatively, the situation change may be triggered by the mobile terminal or navigation device 400 owned by each passenger receiving advertising information such as a coupon. The type information of these triggers can be acquired from inside or outside the navigation device 400.

As described above, the information request includes the current location of the vehicle, date and time, elapsed time since the start of travel, IDs of multiple occupants, and trigger type information.

Next, the server 111 receives the information request transmitted from the navigation device 400 (step S504). Then, the common preference information acquisition unit 113 of the server 111 sets the genre in which the information search is to be performed based on the trigger type information included in the information request (step S505). For example, if it is time to eat, the genre of tastes related to food is set, and if it is immediately after the start of running, the genre of tastes related to music is set. If a predetermined period of time has elapsed after the start of travel, the genre of preference is set, for example, a parking lot used by the passenger as a resting place or a convenience store where the passenger can park. Furthermore, when the current position of the vehicle is at a predetermined position, preferences for a predetermined genre are set (for example, preferences regarding meals when the current position of the vehicle is within a predetermined range of a restaurant area). In addition, when the number of passengers increases or decreases, a predetermined genre preference (for example, music preferences, etc., as in the case immediately after the start of travel) is set. The set genre is searched for common tastes.

Then, the common preference information acquisition unit 113 of the server 111 executes a search process for common preference information common to the passengers by filtering the life log DB 114 based on the genre (step S506). Details of this search process will be described later. After that, the server 111 transmits the common preference information that is the search result to the navigation device 400 (step S507).

After that, the navigation device 400 receives the common preference information from the server 111 (step S508), displays the received common preference information on the display 413, and presents it to the user (step S509).

As the common preference information, the most suitable one may be presented, or a plurality of pieces of information may be displayed on the display section and the user may select one of them. For example, as described above, in the case of meals, it is possible to select from some or all of the items from date 202 to companion 208 in addition to "Italian Restaurant A" corresponding to facility name 205 as common preference information.

(Common preference information search process)
FIG. 6 is a flowchart showing a detailed example of the common preference information search process among the processes performed by the information presentation system. Details of the process performed by the common preference information acquisition unit 113 of the server 111 shown in step S506 in FIG. 5 will be described.

Here, it is assumed that the user of the navigation device 400 (vehicle) is user A, and the companions (passengers of the vehicle) are users B and C. Next, an example will be described in which the navigation device 400 transmits an information request to the server 111 using lunch time as a trigger.

First, the common preference information acquisition unit 113 of the server 111 detects life logs 200 corresponding to the IDs of a plurality of users A, B, and C from the life log DB 114 (step S601).

It is desirable that the common preference information be information that satisfies as many of the passengers (users A, B, and C) as possible and that no one is dissatisfied with. Here, since the search category is dining facilities, the common preference information acquisition unit 113 of the server 111 filters the life log 200 by setting the search category 209 (see FIG. 2) as "meal" (step S602).

Next, for each of the users A, B, and C, the frequency of appearance in the history is counted for each preference item information and converted into a score (step S603). At this time, the food may be classified and scored by day of the week or meal time.

FIG. 7 is a diagram showing trends in meal preferences of users. FIG. 7 shows the score of user A's weekday lunch preference item information 210 based on the life log DB 114. In the example of this figure, user A has a high score for Italian, Chinese, fast food, French, etc. for lunch on weekdays, in that order. In this way, by referring to the life log DB 114, the eating habits of each passenger (users A, B, and C) can be determined for each weekday/holiday, breakfast/lunch/dinner. This makes it possible to present recommended facilities for meals that are common to each user.

At this time, in order to eliminate items that even one passenger is dissatisfied with (items that have no interest), the common preference information acquisition unit 113 selects items (preferences) for which the scores of each user A, B, and C are below a predetermined value. item information 210) is excluded (step S604). Then, the common preference information acquisition unit 113 totals the scores of each user A, B, and C for the excluded items (preference item information 210), and ranks them in order of the total scores (step S605).

Thereafter, the common preference information acquisition unit 113 extracts surrounding facilities that correspond to the topmost item (preference item information 210) and are related based on the current location of the vehicle (step S606). Specifically, stores existing around the current location are searched from the map data DB included in the server 111 and output as common preference information. A plurality of stores may be included in the common preference information. Further, the common preference information may also include the store corresponding to the runner-up item (preference item information 210).

FIG. 8 is a diagram showing an example of presentation of common preference information of the navigation device. An example is shown in which the navigation device 400 receives common preference information output by the common preference information acquisition unit 113 of the server 111 and displays it on the display 413.

When the navigation device 400 receives the common preference information, it displays the screen shown in FIG. 8 and presents the common preference information common to the passengers (users A, B, and C). At this time, the navigation device 400 informs the current location that it is a meal time and information on multiple stores (Restaurant H, Italian J) that have tastes common to users A, B, and C during this time as shown in the figure. The distance from the destination and the required time are also displayed. Further, as shown in the figure, information on the runner-up items (Japanese food soba K, tonkatsu M) may be presented as common tastes of the passengers (users A, B, and C).

Furthermore, when the user selects a presented store, the navigation device 400 can display the location of the corresponding store on the map data and provide route guidance.

9 to 13 are diagrams for explaining specific examples of the common preference information search process shown in FIG. 6. These FIGS. 9 to 13 show examples of data used to search for common preference information of users A, B, and C during lunch (each processing step in FIG. 6).

FIG. 9 shows the processing content of step S602 in FIG. 6, and shows the life log 200 after filtering by "meal" in the search genre 209 for each of users A, B, and C.

FIG. 10 shows the processing content of step S603 in FIG. The score for each preference item information 210 of each user A, B, and C during weekday lunch time using the life log 200 of FIG. 9 is shown. For example, the aggregation period can be a predetermined period such as the most recent year accumulated in the life log DB 114.

FIG. 11 shows the processing content of step S604 in FIG. Using FIG. 10, for example, if the exclusion threshold = 2 or less, the shaded areas in the figure, such as "Japanese food" or "French food" for which the score of any user A, B, or C is 2 or less, for the preference item information 210. The item (preference item information 210) is excluded from search targets for common preference information.

According to the example of FIG. 11, items that even one person is not interested in can be excluded using the exclusion threshold. As other examples of item exclusion, it is different from Fig. 11 if the criteria is to sort items in descending order of scores, or even if the scores are low, there is a store that all users actually visited (scores other than 0). You can also leave items behind.

FIG. 12 shows the processing content of step S605 in FIG. The respective total scores are shown for "Italian", "Chinese", and "Fast food", which are the remaining items (preference item information 210) after the item exclusion in FIG. 11.

FIG. 13 shows the processing content of step S606 in FIG. The items (preference item information 210) shown in FIG. 12 can be assigned priorities "1" to "3" in order of total score, and these three items can be output (transmitted to the navigation device 400) as common preference information. It should be noted that a predetermined number of excluded items in the shaded areas in the figure may be output as runner-up as common preference information. Furthermore, the priority order may change depending on the search conditions, for example, the amount of money for lunch (price 207), the number of people (accompanying persons 208), etc., and is left as data.

The server 111 also searches for related surrounding facilities based on the item ranking and the current location of the vehicle. For example, in the above example,
As an "Italian" facility, "Pasta△△" is "1.8 km away"
As a “Chinese” facility, “XX Chinese Restaurant” is “4km away”
As a “fast food” facility, “○○ Burger” is “2.5km away”
The server 111 searches for and outputs (sends to the navigation device 400) the presence of each of the following. Note that the server 111 transmits only the preference item information 210 ("Italian", "Chinese", "Fast food") as common preference information to the navigation device 400, and the navigation device 400 transmits the preference item information 210 ("Italian", "Fast food") to the navigation device 400. A search process for nearby facilities may be performed based on "Chinese", "Fast food").

Regarding the extraction of the above common preference information, if there are multiple compatible stores within a predetermined distance from the current location of the vehicle, the common preference information acquisition unit 113 of the server 111 extracts evaluation information (word of mouth, congestion information) of each store. Based on this, stores with high evaluation points may be presented with priority. Alternatively, the trend of each person's budget for meals may be calculated based on the life log 200, and recommended stores may be presented. In this case, the average cost of each of users A, B, and C is calculated based on the cost history of the life log 200, and a store with a price range corresponding to the lowest cost among the respective average costs is presented. Alternatively, stores in the price range corresponding to the average value of each average cost are presented.

Alternatively, stores that meet the respective conditions of preference items (for example, the preference item information 210 for "meal"), evaluation points, and costs may be presented, and the user may select a stopover. In this case, the conditions selected by the user may be learned and reflected in the priority order of the next presentation.

In addition, a search is made to see if the past history of meals by the same companions (same members) as the combination of fellow passengers (Mr. A, Mr. B, Mr. C) is stored in the life log DB 114. If so, it may be weighted by adding points to the score for the preference item (``meal'') at that time, or the store corresponding to the preference item at that time may be presented. .

In addition, if the common preference information acquisition unit 113 eliminates items that even one of the passengers A, B, and C is dissatisfied with, and there is no item that all of the passengers like, the common preference information acquisition unit 113 will provide a food court, family restaurant, etc. Facilities that can provide dishes of various categories may be output as common preference information.

Furthermore, if there is a user D who does not use the life log 200 (adding or updating data, etc.), the server 111 only needs to acquire and register the scores for each cooking item from this user D. (For example, Italian = 6 points, Chinese = 8 points, etc.) As a result, even when user D, who does not use the life log 200, is on board (accompanying), it is possible to present common preference information common to the accompanying persons (users A, B, C, D) including this user D. becomes.

Furthermore, although the above embodiments use the presentation of dining facilities as an example, the search process for common preference information can be applied to the presentation of other information that passengers are commonly interested in. As an example, the common preference information acquisition unit 113 of the server 111 detects genres of music (jazz, pops, classical, fusion, etc.) that passengers share in common, and sends the detected genres of music (jazz, pops, classical music, fusion, etc.) to the navigation device 400 as common preference information. You can also send it. The navigation device 400 extracts and reproduces music of a corresponding genre from the music data stored in the content data storage unit. Furthermore, the present invention is not limited to music playback, and if common preferences among passengers can be determined using a similar method, contents such as currently broadcast TV programs, radio programs, DVD movies, etc. may be transmitted as common preference information.

Furthermore, when the navigation device 400 is used and the destination of the drive has not been determined, a plurality of entertainment facilities (golf courses, amusement parks, movie theaters, etc.) that are of common interest to the passengers are presented. It will also be possible to have the user select a destination.

Further, in the above embodiment, the server 111 includes the common preference information acquisition unit 113 and the life log DB 114, but the terminal 101 may include the common preference information acquisition unit 113 instead. In this form, the terminal 101 acquires life log 200 data of multiple passengers from the life log DB 114 of the server 111, and acquires common preference information including objects in which the multiple passengers have common interests. .

Note that the information presentation method described in this embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer or a workstation. This program is recorded on a computer-readable recording medium such as a hard disk, flexible disk, CD-ROM, MO, or DVD, and is executed by being read from the recording medium by the computer. Further, this program may be a transmission medium that can be distributed via a network such as the Internet.

100 Information presentation system 101 Terminal 102 Identification information acquisition unit 103 Transmission unit 104 Receiving unit 105 Presentation unit 111 Server 112 Receiving unit 113 Common preference information acquisition unit 114 Life log DB
115 Transmitter 200 Lifelog 400 Navigation device

Claims (1)

A server device capable of communicating with a terminal device available on a mobile body,
receiving means for receiving information identifying a plurality of users boarding the mobile object from the terminal device;
Common preference information acquisition means for acquiring common preference information including objects in which the plurality of users have common interests;
Transmitting means for transmitting the common preference information to the terminal device,
The transmitting means transmits the common preference information to the terminal device when the terminal device receives an information request transmitted using a detection of an increase or decrease in the number of users boarding the mobile object as a trigger. server device.

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