JP5920140B2 - Information sharing system, information sharing method, and terminal device - Google Patents

Description

  The present invention relates to an information sharing system, an information sharing method, and a terminal device that share information related to a posted message posted on a computer network.

  In recent years, there has been provided a system that allows a user to post a question text on a computer network via a terminal and to post an answer text to the question text on the network. Further, in these systems, a third party in addition to the questioner and the answerer can view the question text and the answer text posted on the network. There are various questions to be asked, but it is possible to ask questions regarding traffic conditions such as traffic jams, suspension of service, store congestion, weather conditions, and the like.

  Here, the above-described system has an advantage that the latest information at a distant place can be acquired quickly, but there is a problem that it is difficult to ensure the reliability of the information. In other words, since any user can basically reply to the posted question text, even a user who does not know the correct answer can post the answer text, and the answer text is the correct answer. It was difficult for a questioner or a third party to judge whether or not. Therefore, for example, in JP 2009-211165 A, when the answer sentences posted on the network are aggregated, the location information of the mobile terminal that transmitted the answer sentences is also acquired, and the inside of the venue where the question has been made in advance. A technique has been proposed in which only answer information transmitted by a mobile terminal located in is targeted for aggregation.

JP2009-211685 (pages 8 to 11, FIG. 9)

  Here, with the technique of Patent Document 1, it is possible to limit the respondents to only users who are within a predetermined range. However, if only a user within a predetermined range can know a correct answer, the respondent may be limited to only a user within a predetermined range as in Patent Document 1. However, the user who can know the correct answer for each question actually varies. Therefore, in the technique of Patent Document 1, a question sentence may be posted even in a situation where there is a high possibility that an appropriate answer cannot be obtained, such as when there is no user who can know a correct answer.

  However, for example, with respect to a question related to the point A, it is desirable that the user in the vicinity of the point A can know a correct answer, so that the question is asked at least when there is a user around the point A. On the other hand, it is desirable to ask a question about a B point different from the A point, so that a user who is not in the A point but around the B point can know a correct answer, and at least when there is a user around the B point. . However, the technique of Patent Document 1 is not a technique that limits a question based on the position associated with the question sentence and the position of the respondent, but only limits the answer based on the position where the answer to the question is made. Even in a situation where there is a high possibility that an appropriate answer cannot be obtained, such as when there is no user who can know the correct answer, there is a problem that the reliability of information is lowered as a result.

  The present invention has been made to solve the above-described conventional problems, and when posting a question sentence on a computer network, an appropriate answer cannot be obtained, such as when there is no user who can know the correct answer. An object of the present invention is to provide an information sharing system, an information sharing method, and a terminal device that can limit the input of a question sentence in a highly likely situation and can improve the reliability of information.

  In order to achieve the above object, an information sharing system (1) according to claim 1 of the present application is provided by a user on a computer network composed of a terminal (6) and servers (3, 4) of a user (5). In an information sharing system for sharing information related to a posted message with a plurality of users, a question message information acquisition means for acquiring a question message input via the terminal together with position information associated with the question message ( 11, 41), a question sentence browsing means (11, 41) that enables the user to view the question sentence acquired by the question sentence information acquisition means, and an answer to the question sentence Answer sentence information acquisition means (11, 41) for acquiring an answer sentence input via the terminal, and the answer sentence information acquisition means acquired by the answer sentence information acquisition means Answer sentence browsing means (11, 41) for enabling the user to read the answer sentence on a computer network, and answerer position information acquiring means for acquiring position information of the answerer who is the user who inputs the answer sentence (11, 41), and question position information that is position information to be associated with the question sentence, and respondent position information that is position information of the respondent acquired by the respondent position information acquisition means. And a question text input restricting means (11, 41) for restricting the input of the question text to the terminal.

  Moreover, the information sharing system (1) according to claim 2 is the information sharing system according to claim 1, wherein the question sentence input restriction means (11, 41) is a position specified by the question position information. When there is no respondent corresponding to the question position, the question sentence is not input to the terminal.

  An information sharing system (1) according to claim 3 is the information sharing system according to claim 2, wherein when there is the respondent corresponding to the question position, the information sharing system A fixed sentence extraction means (11, 41) for extracting the fixed sentence specifying the question related to the question position from the question sentence input restriction means (11, 41), which is extracted by the fixed sentence extraction means Any one of the fixed phrases is selectively input as the question sentence.

  An information sharing system (1) according to claim 4 is the information sharing system according to claim 2, wherein when there is the respondent corresponding to the question position, a word related to the question position And the question sentence input restricting means (11, 41) comprises the question sentence using the words specified by the word specifying means, It guides to the questioner who is the said user who posts the said question sentence.

  Moreover, the information sharing system (1) according to claim 5 is the information sharing system according to any one of claims 2 to 4, wherein the respondent corresponding to the question position is the question position information. The answerer is located within a predetermined distance from the question position specified by

  An information sharing system (1) according to claim 6 is the information sharing system according to any one of claims 2 to 4, wherein the respondent corresponding to the question position is the question position information. The respondent is located on the same link, on the same route, or on the same facility as the question position specified by.

  An information sharing system (1) according to claim 7 is the information sharing system according to any one of claims 2 to 4, wherein the respondent corresponding to the question position is the question position information. The answerer is located in the latest predetermined time at the question position specified by the above.

  An information sharing system (1) according to claim 8 is the information sharing system according to any one of claims 1 to 7, wherein the question sentence information acquisition means (11, 41) Information specifying a position on a map designated by a questioner who is the user who posted a sentence is acquired as the question position information.

The information sharing system according to claim 9 (1) is an information sharing system according to any one of claims 1 to 8, wherein the question sentence input limiting means (11, 41) is pre-Symbol Based on the respondent position information indicating the position of the respondent at the time when the question sentence is posted, input of the question sentence to the terminal is limited.

  An information sharing system (1) according to claim 10 is the information sharing system according to any one of claims 1 to 9, wherein the question text browsing means (11, 41) is a map image ( 61) is displayed on the terminal (6) and specified on the map image displayed on the terminal by the question position information associated with the question sentence obtained by the question sentence information obtaining unit. A selection object (62) is displayed at a position where the question sentence acquired by the question sentence information acquisition means is output from the terminal when the selection object is selected by a user. .

  Further, the information sharing system (1) according to claim 11 is the information sharing system according to claim 10, wherein the answer sentence browsing means (11, 41) is the question to be answered by the answer sentence. When the selection object (62) displayed at a position specified by the question position information associated with a sentence is selected by a user, the answer sentence is output together with the question sentence.

An information sharing method according to a twelfth aspect of the present invention provides a plurality of pieces of information related to posted text posted by a user on a computer network composed of the terminal (6) of the user (5) and the servers (3, 4). In the information sharing method shared by the user, a question sentence information acquisition unit acquires a question sentence input via the terminal together with position information associated with the question sentence, and a question A sentence browsing means for enabling the user to browse the question sentence acquired by the question sentence information acquiring step on the computer network, and an answer sentence information acquiring means as an answer to the question sentence and answer message information acquisition step of acquiring an answer sentence that is input through the terminal, the answer message browsing means, said answer message information acquisition stearate The answer sentence acquired by the flop, and answer sentence browsing step of viewable to the user over a computer network, the respondent positional information acquiring unit, the positional information of the user and is respondent to input the answer message a respondent positional information obtaining step of obtaining, the question input limiting means, the position of the respondent acquired by the respondent positional information obtaining step and questions position information is position information of interest to be associated with the question message A question sentence input restricting step for restricting the input of the question sentence to the terminal based on the respondent position information which is information.

  Furthermore, the terminal device according to the thirteenth aspect provides a plurality of the users with information on a posted message posted by the user (5) on a computer network configured with the servers (3, 4) connected so as to be capable of bidirectional communication. A question sentence information acquisition means (41) for acquiring a question sentence input via the operation unit (39) together with position information associated with the question sentence in a terminal device for constructing an information sharing system shared by The question text acquired by the question text information acquisition means is input via the operation unit as a response to the question text browsing means (41) that enables the user to browse the question text on a computer network. An answer sentence information obtaining unit (41) for obtaining an answer sentence and the answer sentence obtained by the answer sentence information obtaining unit are connected to a computer network. An answer sentence browsing means (41) that enables the user to view on the network, an answerer position information acquisition means (41) that obtains position information of an answerer who is the user who inputs the answer sentence, and the question Based on the question position information, which is position information to be associated with the sentence, and the respondent position information, which is the position information of the respondent acquired by the respondent position information acquisition means, the question via the operation unit And a question sentence input restricting means (41) for restricting sentence input.

  In the information sharing system according to claim 1 having the above-described configuration, since the input of the question text to the terminal is restricted based on the position information associated with the question text and the respondent's position information, the question is placed on the computer network. When posting a sentence, it is possible to limit the input of a question sentence in a situation where there is a high possibility that an appropriate answer cannot be obtained, such as when there is no user who can know a correct answer. As a result, it is possible to improve the reliability of information posted by the user.

  Further, in the information sharing system according to claim 2, when there is no respondent corresponding to the question position associated with the question sentence, the question answer sentence is not input to the terminal. It is possible not to post in advance for a question sentence predicted that there is no user who can know. As a result, it is possible to prevent erroneous information from being posted on the computer network.

  Further, in the information sharing system according to claim 3, when there is a respondent corresponding to the question position associated with the question sentence, the fixed sentence specifying the question related to the question position from among a plurality of types of fixed sentence. Since one of the extracted fixed phrases is selectively input as a question sentence, a fixed sentence that has a high possibility of obtaining a correct answer from a plurality of types of fixed phrases is input to the questioner as a question sentence. It becomes possible to make it.

  Further, in the information sharing system according to claim 4, when there is an answerer corresponding to the question position associated with the question sentence, a word related to the question position is specified, and the question sentence is determined using the specified word. Since the questioner is guided to configure the question, even if the question sentence can be freely input, it is possible to cause the questioner to input a question sentence that is likely to obtain a correct answer. .

  Further, in the information sharing system according to claim 5, since there is a restriction that the question text is not input when there is no respondent within a predetermined distance from the question position associated with the question text, the situation of the question position is known. When there is no answerer to be obtained, it is estimated that there is a low possibility that a correct answer is obtained with respect to the question regarding the question position, and a question sentence can be configured not to be posted in advance.

  Further, in the information sharing system according to claim 6, it is restricted that the question text is not input when there is no respondent on the same link, the same route, or the same facility as the question position associated with the question text. Therefore, when there is no respondent who can know the situation of the question position, it is estimated that there is a low possibility of obtaining a correct answer to the question regarding the question position, and the question sentence is not posted in advance. It becomes possible.

  Further, in the information sharing system according to claim 7, since there is a restriction so that the question text is not input when there is no respondent who was within the predetermined time immediately before the question position associated with the question text. When there is no respondent who can know the situation of the position, it is estimated that there is a low possibility of obtaining a correct answer to the question regarding the question position, and it is possible to configure so that the question sentence is not posted in advance. .

  Further, in the information sharing system according to claim 8, information specifying the position on the map designated by the questioner is acquired as the question position information, so there is a respondent who can know a correct answer to the question sentence. It becomes possible to determine appropriately based on the position on the map designated by the questioner.

  Further, in the information sharing system according to claim 9, the input of the question sentence is restricted based on the relationship between the position information associated with the question sentence and the position information indicating the position of the respondent at the time of posting the question sentence. Therefore, it is possible to accurately determine whether or not there is a respondent at a position where a correct answer to the question sentence can be known.

  Further, in the information sharing system according to claim 10, when the selection target displayed at the position specified by the question position information associated with the question text is selected by the user, the question text is output from the terminal. The terminal on the map and the question text related to the point can be output in association with each other. Therefore, the user can easily select and output a question sentence desired to be viewed on the map.

  Further, in the information sharing system according to claim 11, when the selection target displayed at the position specified by the question position information associated with the question sentence is selected by the user, the answer to the question sentence together with the question sentence Since the sentence is also output from the terminal, the question sentence and the answer sentence can be associated with each other and output at the terminal.

  Further, in the information sharing method according to claim 12, since the question text input to the terminal is restricted based on the location information associated with the question text and the respondent location information, the question text is posted on the computer network. It is possible to limit the input of a question sentence in a situation where there is a high possibility that an appropriate answer cannot be obtained, such as when there is no user who can know the correct answer. As a result, it is possible to improve the reliability of information posted by the user.

  Furthermore, in the terminal device according to claim 13, since the input of the question text to the terminal device is restricted based on the position information associated with the question text and the respondent's position information, the question text is posted on the computer network. It is possible to limit the input of a question sentence in a situation where there is a high possibility that an appropriate answer cannot be obtained, such as when there is no user who can know the correct answer. As a result, it is possible to improve the reliability of information posted by the user.

It is a schematic structure figure showing an information sharing system concerning this embodiment. It is the block diagram which showed the structure of the information sharing system which concerns on this embodiment. It is the figure which showed an example of the contribution text information memorize | stored in contribution text information DB of a contribution text management center. It is a block diagram which shows typically the control system of the communication terminal which concerns on this embodiment. It is a flowchart of the question sentence contribution processing program concerning this embodiment. It is a figure explaining posting operation of a question sentence by a user. It is a figure explaining posting operation of a question sentence by a user. It is a figure explaining posting operation of a question sentence by a user. It is a figure explaining posting operation of a question sentence by a user. It is the figure which showed an example of the fixed form registered in fixed form DB. It is a figure explaining posting operation of a question sentence by a user. It is a figure explaining browsing operation of a question sentence by a user. It is a figure explaining browsing operation of a question sentence by a user. It is a figure explaining browsing operation of a question sentence by a user. It is a flowchart of the sub process program of the question text input restriction | limiting determination process which concerns on this embodiment. It is a flowchart of the sub-processing program of the road determination process which concerns on this embodiment. It is the figure shown about the example determined not to restrict | limit the input of a question sentence in a road determination process. It is the figure shown about the example determined to restrict | limit the input of a question sentence in a road determination process. It is a flowchart of the sub process program of the public traffic determination process which concerns on this embodiment. It is the figure shown about the example determined not to restrict | limit the input of a question sentence in public traffic determination processing. It is the figure shown about the example determined to restrict | limit the input of a question sentence in a public transport determination process. It is a flowchart of the sub process program of the facility determination process which concerns on this embodiment. It is the figure shown about the example determined not to restrict | limit the input of a question sentence in a facility determination process. It is the figure shown about the example determined to restrict | limit the input of a question sentence in a facility determination process. It is a flowchart of the sub process program of the range determination process which concerns on this embodiment. It is the figure shown about the example determined not to restrict | limit the input of a question sentence in the range determination process. It is the figure shown about the example determined that the input of a question sentence is restrict | limited in the range determination process. It is a flowchart of an answer sentence contribution processing program concerning this embodiment. It is a figure explaining posting operation of a reply sentence by a user. It is a figure explaining posting operation of a reply sentence by a user. It is a figure explaining posting operation of a reply sentence by a user. It is the figure which showed the example of a display of the reply sentence posted by the user.

  DETAILED DESCRIPTION Hereinafter, an information sharing system according to the present invention will be described in detail with reference to the drawings based on a specific embodiment. First, a schematic configuration of the information sharing system 1 according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a schematic configuration diagram showing an information sharing system 1 according to the present embodiment. FIG. 2 is a block diagram showing a configuration of the information sharing system 1 according to the present embodiment.

  As shown in FIG. 1, the information sharing system 1 according to this embodiment includes a posted message search server 3 included in the posted message management center 2, a posted message information management server 4 included in the posted message management center 2, and a user 5. Is basically composed of a communication terminal 6 owned by the company. The communication terminal 6 includes a navigation device as a vehicle-mounted device mounted on a vehicle, a mobile phone, a PDA, a smartphone, and the like. Further, the user 5 may be moving by a moving means other than the vehicle (for example, train, bicycle, walking, etc.) or may be in a state of not moving. Also, the posted text management center 2 and the communication terminal 6 are configured to be able to transmit and receive electronic data to and from each other via the communication network 7.

  Here, when the user of the communication terminal 6 requests browsing of the posted message posted on the computer network, the posted message search server 3 stores the posted message stored in the posted message management center 2 (more specifically, Is a server device that makes it possible for the user to view the contents of the posted text by extracting the posted text corresponding to the browsing request from the question text and the answer text to the question text and distributing it to the communication terminal 6. In particular, when distributing a question sentence, position information associated with the extracted question sentence is given and delivered together with the given position information. Details of the posted text search server 3 will be described later.

  On the other hand, the posted text information management server 4 manages blogs, SNS (Social Network Service), Twitter (registered trademark), chat, etc. (hereinafter referred to as SNS, etc.), and posted text posted on a computer network in SNS or the like. It is a server device that stores and provides. In addition, the posting of the posted text by the user can be performed not only from the communication terminal 6 but also from a PC or other communication device that can be connected to a computer network. In the present embodiment, the posted text posted on the computer network includes a question text and an answer text to the question text.

  The posted message information management server 4 has a posted message information DB 8 as a storage medium, and posted messages posted on the computer network are sequentially stored in the posted message information DB 8 via the posted message management center 2. In the posted message information DB 8, together with the posted message, the posting time when the posted message was posted, the ID of the poster, the type of posted message (question or answer), and the posted message are question messages. In some cases, a point arbitrarily designated on the map by the user who is the interrogator (hereinafter referred to as a question point) is also stored, but a point arbitrarily designated on the map by the user who is the interrogator (question) Position information is defined as position information associated with the question sentence (hereinafter referred to as question position information). Here, FIG. 3 is a diagram showing an example of posted texts collected and provided in the posted text information management server 4. As shown in FIG. 3, the posted text includes a posting time, a type of posted text, a question point, a user ID, a text of the posted text, and the like. Also, the answer sentence and the question sentence that is the answer target of the answer sentence are stored in association with each other. In the posted message information management server 4, information related to posted messages posted by users all over the country is cumulatively stored in the posted message information DB 8, and when the stored data amount exceeds a predetermined amount, it is related to past posted messages. The information is deleted in order. The posted message information management server 4 may be installed in a center different from the posted message management center 2.

  On the other hand, the communication terminal 6 is an information communication terminal provided with a function for specifying the current position of the communication terminal 6 such as GPS (that is, the current position of the user 5) and a map image around the current position of the user 5. For example, a navigation device, a mobile phone, a PDA, a smartphone, and the like are applicable.

  The communication terminal 6 is connected to the communication network 7 via a transmission / reception circuit unit (RF) 33 described later, and is configured to be capable of bidirectional communication with the posted message management center 2. When a posted text (including a question text and an answer text) is input to the communication terminal 6, the input posted text is transmitted from the communication terminal 6 to the posted text management center 2 and posted on the computer network. Is done. On the other hand, when the information about the posted text (including the question text and answer text) is received from the posted text management center 2, the text content of the received posted text is displayed on the display of the communication terminal 6 as described later. The contents of the sentence can be viewed by the user (see FIG. 14). However, as will be described later, the input of the question text is restricted under specific conditions. Details of the communication terminal 6 will be described later.

The communication network 7 includes a large number of base stations arranged in various parts of the country and a communication company that manages and controls each base station. The base station and the communication company are connected to each other by wire (optical fiber, ISDN, etc.) or wirelessly. It is configured by connecting.
Here, the base station has a transceiver (transmitter / receiver) for communicating with the communication terminal 6 and an antenna. The base station performs wireless communication between the communication companies, and at the end of the communication network 7, the base station communicates with the communication terminal 6 within the range (cell) within which the base station can receive radio waves. Have the role of relaying.

  Next, the configuration of the posted text search server 3 constituting the information sharing system 1 will be described in more detail with reference to FIG. As shown in FIG. 2, the posted text search server 3 basically includes an information management ECU 11, a map information DB 12 as information recording means connected to the information management ECU 11, and a center communication device 13.

  The information management ECU 11 is an electronic control unit that performs various controls in the posted text search server 3 as shown in FIG. In addition to the CPU 21 as the arithmetic device and the control device, the RAM 22 used as a working memory when the CPU 21 performs various arithmetic processes, various control programs, a question sentence posting process program (FIG. 5) and an answer sentence posting described below. An internal storage device such as a ROM 23 storing a processing program (FIG. 28) and the like is provided. The information management ECU 11 constitutes various means as processing algorithms together with the ECU of the communication terminal 6. For example, the question sentence information acquisition unit acquires the question sentence input via the communication terminal 6 together with the position information associated with the question sentence. The question sentence browsing means enables the user 5 to view the acquired question sentence on the computer network. The answer sentence information acquisition unit acquires an answer sentence input via the communication terminal 6 as an answer to the question sentence. The answer sentence browsing means makes it possible for the user 5 to read the acquired answer sentence on the computer network. The respondent position information acquisition unit acquires the position information of the respondent who is the user 5 who inputs an answer sentence. The question sentence input restricting means restricts the input of the question sentence to the communication terminal 6 based on the position information to be associated with the question sentence and the position information of the respondent. When there is an answerer corresponding to the question position, the fixed sentence extraction unit extracts a fixed sentence that specifies a question related to the question position from a plurality of types of fixed sentences. The word specifying unit specifies a word related to the question position when there is an answerer corresponding to the question position.

  The map information DB 12 is storage means for storing map information. Here, the map information stored in the map information DB 12 stores various information necessary for route search and map display including a road network. For example, link data relating to roads (links), nodes relating to node points, and the like. Data, route data related to public transport routes such as railways and buses, facility data related to facilities, intersection data related to each intersection, search data for searching for routes, search data for searching points, and map display It consists of map display data. The map information DB 12 is periodically updated to new map information.

  The center communication device 13 is a communication device for communicating with the communication terminal 6 via the communication network 7. In the present embodiment, a posting message browsing request and information related to a posted message are transmitted and received between the posted message search server 3 and the communication terminal 6 via the center communication device 13.

  Next, a schematic configuration of the communication terminal 6 owned by the user 5 will be described with reference to FIG. FIG. 4 is a block diagram schematically showing a control system of the communication terminal 6 according to the present embodiment.

  As shown in FIG. 4, the communication terminal 6 has a data bus BUS, a CPU 31, a memory 32 storing user information (user ID, name, etc.), map information, etc. regarding the user 5 possessing the communication terminal 6, a communication network A transmission / reception circuit unit (RF) 33 that transmits / receives signals to / from a base station of the network 7, converts an RF (Radio Frequency) signal received by the transmission / reception circuit unit 33 into a baseband signal, and converts the baseband signal into an RF signal A baseband processing unit 34 for converting to an input / output unit 37, an input / output unit 37 that is an interface with a microphone 35, a speaker 36, and the like, a display 38 configured with a liquid crystal display panel, and an input operation unit configured with a touch panel, a keyboard, and the like 39 and the GPS 40 are connected to each other.

  Here, the CPU 31 built in the communication terminal 6 is a control unit of the communication terminal 6 that executes various operations according to the operation program stored in the memory 32, and constitutes the communication terminal ECU 41 together with the memory 32. Various processing contents of the communication terminal ECU 41 are displayed on the display 38 as necessary.

  The memory 32 includes user information (user ID, name, etc.) and map information related to the user 5 who owns the communication terminal 6, an application program such as an installed navigation application, a fixed sentence DB, a current location history of the user 5, The storage medium stores a question sentence posting process program (FIG. 5), an answer sentence posting process program (FIG. 28), and the like, which will be described later.

  Here, the map information stored in the memory 32 displays, for example, link data relating to roads (links), node data relating to node points, route data relating to public transportation routes such as railways and buses, facility data relating to facilities, and maps. Map display data for searching, intersection data relating to each intersection, search data for searching for a route, search data for searching for points, and the like. The map information may be acquired from the server by communication without being stored in the memory 32. The memory 32 may be constituted by a hard disk, a memory card, an optical disk such as a CD or a DVD, and the like.

  The fixed phrase DB stored in the memory 32 is a DB in which a plurality of types of fixed phrases frequently used as question sentences and answer sentences are registered. In addition, among the fixed phrases stored in the fixed phrase DB, particularly the fixed phrases used for the question sentences are associated with the question target areas corresponding to the question contents (see FIG. 10). The question target area is information for identifying a question point appropriate for asking a question of each question sentence. For example, in the case of a fixed sentence that asks about the contents related to traffic jam, the question target area is on the road. Then, when the user inputs a question sentence or an answer sentence at the communication terminal 6, the communication terminal ECU 41 displays an appropriate fixed sentence as an input candidate among the fixed sentences stored in the fixed sentence DB (FIG. 8). FIG. 9 and FIG. 30). In particular, when a user inputs a question sentence, a question sentence that includes the question point designated by the user in the question target area (that is, a question sentence that defines a question related to the question point) is displayed as an input candidate.

  The display 38 is disposed on one surface of the housing, and a liquid crystal display, an organic EL display, or the like is used. Then, a top screen for executing various applications installed in the communication terminal 6, screens related to the executed applications (Internet screen, mail screen, navigation screen, etc.), and various information such as images and videos are displayed. Is done. In particular, on the navigation screen displayed when the navigation application is executed, a map image including a road, traffic information, a guidance route from the departure place to the destination, guidance information along the guidance route, and the like are also displayed. Further, in the present embodiment, information related to the posted text received from the posted text management center 2 (sentence content of posted text, ID of the poster, question point, etc.) is also displayed.

  The input operation unit 39 is constituted by a touch panel provided on the front surface of the display 38. Then, the communication terminal ECU 41 performs control to perform various corresponding operations based on an electrical signal output by pressing the touch panel or the like. In particular, this embodiment is used when posting a posted sentence such as a question sentence or an answer sentence, or browsing a posted sentence already posted on a computer network. The input operation unit 39 can also be constituted by various keys such as a number / character input key, a cursor key for moving a cursor for selecting displayed contents, and an enter key for confirming selection.

  In addition, the GPS 40 can detect the current position and the current time of the communication terminal 6 (that is, the user 5) by receiving radio waves generated by the artificial satellite. Moreover, it is good also as a structure provided with other apparatuses (for example, gyro sensor etc.) for detecting the present position and direction of the communication terminal 6 besides GPS40.

  The transmission / reception circuit unit 33 is configured to be able to communicate with a traffic information center such as a VICS (registered trademark) center or a probe center via the communication network 7 in addition to the posted text management center 2. Then, it is possible to acquire traffic information such as traffic jam information, regulation information, and traffic accident information via the VICS center and the probe center.

  Next, a question message posting process program executed in the communication terminal 6 and the posted message management center 2 constituting the information sharing system 1 having the above-described configuration will be described with reference to FIG. FIG. 5 is a flowchart of the question message posting process program according to this embodiment. Here, the question message posting processing program is executed after the power of the communication terminal 6 is turned on (particularly after the ACC of the mounted vehicle is turned on when the communication terminal 6 is a vehicle-mounted device). This is a program for managing and storing posted question texts when posting a question text on a computer network. The programs shown in the flowcharts of FIGS. 5, 15, 16, 19, 22, 25, and 28 below are stored in the RAM, ROM, etc. provided in the posted text management center 2 and the communication terminal 6. And is executed by the CPU 21 or the CPU 31. Note that the question sentence posting processing program is an application including a question sentence posting processing program or a question sentence posting processing program when the question sentence posting processing program is started from a mobile terminal (for example, a smartphone, a mobile phone, or a tablet terminal). It may be executed after being activated.

First, the question message posting process program executed in the communication terminal 6 of the questioner will be described. The question message posting process program executed in the communication terminal 6 is different in the process executed between the communication terminal 6 possessed by the questioner and the communication terminal 6 possessed by a person other than the questioner (that is, the respondent).
In step (hereinafter abbreviated as S) 1, the CPU 31 is based on the operation of the user (the user who owns the terminal and who is the questioner who posts a question sentence, which is the same hereinafter) received by the input operation unit 39. It is determined whether or not an operation for posting a question sentence has been performed.

Here, the operation of posting a question sentence in the information sharing system 1 according to the present embodiment starts with an operation of selecting a question point. Therefore, in S1, it is determined whether or not there has been an operation for selecting a question point. Here, FIG. 6 is a diagram illustrating a user's question point selection operation in the communication terminal 6.
As shown in FIG. 6, the user first selects an arbitrary point on the map image 61 displayed on the display 38 as the question point X. The question point X selected by the user is a point that is a question target of the posted question text, and the question text basically posted as described below is a question about the question point X (for example, the question point X Traffic congestion and weather). The information on the question point X is transmitted to the posted message management center 2 in association with the question message as described later, and stored in the posted message information DB 8 together with the question message (see FIG. 3).

  If it is determined as a result of the determination in S1 that an operation for posting a question sentence has been performed in the input operation unit 39 (S1: YES), the process proceeds to S2. On the other hand, when it is determined that an operation for posting a question sentence is not performed in the input operation unit 39 (S1: NO), the question sentence posting process program is terminated.

  In S <b> 2, the CPU 31 acquires position information (question position information) associated with the question sentence as the question point based on the user's operation input via the input operation unit 39. The question point is a point that is a question target of the posted question text, and is selected by the user on the map image displayed on the display 38 as described above (see FIG. 6).

  Next, in S3, the CPU 31 determines the current position of the respondent (the user other than the questioner corresponds) at the present time (that is, when the questioner posts the question sentence) and information on the history of the current position (hereinafter referred to as the respondent). A signal for requesting location information) (hereinafter referred to as respondent location information request) is transmitted to the posted text management center 2. In addition, as respondent position information, information regarding the current position of all users 5 other than the questioner and the history of the current position may be requested, or information on users within a predetermined distance (for example, within 10 km) from the question point may be requested. Only information on the current position and the history of the current position may be requested. However, when requesting only the information on the current position of the user within a predetermined distance from the question point, it is necessary to include the information on the question point acquired in S2 in the respondent position information request transmitted to the posted message management center 2 There is. The posted message management center 2 that has received the respondent location information request acquires information on the current location of the respondent and the history of the current location by communicating with the respondent's communication terminal 6 as will be described later.

  Thereafter, in S4, the CPU 31 receives the respondent position information transmitted from the posted message management center 2. The respondent position information received in S4 is information on the current position of the respondent and the history of the current position at the present time (that is, when the questioner posts a question sentence).

  Next, in S5, the CPU 31 executes a question sentence input restriction determination process (FIG. 15) described later. Here, the question sentence input restriction determination process is a question point to be associated with the question sentence acquired in S2, that is, position information (question position information) to be associated with the question sentence, or the current state of the respondent received in S4. This is a process for determining whether or not to restrict the input of the user's question text based on information on the position and history of the current position (respondent position information).

  Thereafter, in S6, the CPU 31 determines whether or not the determination result of the question sentence input restriction determination process in S5 is a result of “restricting input of the user's question sentence”.

  If the determination result of the question sentence input restriction determination process of S5 is a determination result “restrict user input of question sentences” (S6: YES), the question sentence input screen is not displayed. To S7.

  In S7, the CPU 31 guides that the question text cannot be input because the condition for inputting the question text is not satisfied as shown in FIG. Then, the question message posting process program is terminated without causing the question message to be input. As a result, the input of the question text is limited.

  On the other hand, when the determination result of the question sentence input restriction determination process of S5 is a determination result “do not restrict the user's question sentence input” (S6: NO), the process proceeds to S8.

  In S <b> 8, the CPU 31 displays a question sentence input screen for inputting a question sentence on the display 38. The question text input screen is a screen for allowing the user to input a question text.

Here, FIG. 8 and FIG. 9 are diagrams showing a question sentence input screen in the communication terminal 6.
As shown in FIG. 8 and FIG. 9, the user selects the contents to be a question sentence from a plurality of fixed sentences displayed on the display 38. Moreover, the content of the fixed phrase to be displayed is not fixed, but is changed depending on the question point. For example, when a point on the road is selected as a question point, questions regarding traffic congestion and accidents related to the road are displayed as fixed phrases (FIG. 8), and a point on the route is selected as the question point Displays a question regarding the operation status of public transportation such as trains and buses as a fixed sentence, and if a point on the facility is selected as a question point, a question regarding the congestion status of the facility and the business situation is displayed as a fixed sentence. Display (FIG. 9). As a result, it is possible to limit the input of the question text so that the question has a respondent who can know a correct answer in advance. Note that the fixed phrases to be displayed are stored in the fixed phrase DB of the memory 32 in advance.

Here, the fixed phrase DB is a DB in which a plurality of types of fixed phrases frequently used as question sentences and answer sentences are registered. FIG. 10 is a diagram showing an example of the fixed phrase DB.
As shown in FIG. 10, in the fixed phrase DB, a plurality of types of fixed phrases are registered for each of the question sentence and the answer sentence. Further, the standard sentence used for the question sentence is associated with the question target area corresponding to the question content. The question target area is information for identifying a question point suitable for asking a question of each question sentence. For example, the question sentence “What is the traffic situation?” Is a question about the road, and the question target area is associated with the road. Further, the question sentence “What is the weather now?” Is a question related to the outdoors, and the question target area is associated with the outdoors (on the road, parks of outdoor type facilities, etc.) excluding indoor facilities. And CPU31 prescribed | regulated the question relevant to a question point about the fixed phrase in which the question object area containing the question point acquired by said S2 was associated from the multiple types of fixed sentence registered in fixed phrase DB. Extracted as a fixed sentence, and the extracted fixed sentence is displayed on the question sentence input screen as a selection candidate as described above.

  The contents of the question sentence may be arbitrary sentences inputted by the user as shown in FIG. And when inputting arbitrary sentences, CPU31 specifies a word relevant to a question point, and guides a questioner so that a question sentence may be constituted using the specified word. For example, when a point on the road is selected as the question point, “road”, “traffic jam”, and “accident” are specified as words related to the question point. Then, guidance is provided on the question sentence input screen so as to compose a question sentence using any one or a plurality of words of “road”, “congestion”, and “accident”. As a result, it is possible to limit the input of the question text so that the question has a respondent who can know a correct answer in advance. Note that the correspondence between the question point and the word is stored in advance in storage means such as the memory 32.

  Thereafter, in S <b> 9, the CPU 31 acquires the text content of the question sentence based on the user operation input via the input operation unit 39. As described above, the text content of the question text is selected by the user from the fixed text displayed on the display 38 or is an arbitrary text input by the user (see FIGS. 8, 9, and 11).

  Next, in S4, the CPU 31 sends the question point acquired in S2 and the question sentence acquired in S9 together with the posting time when the question sentence is posted, the ID of the poster, and the type of the posted sentence (ie, the question sentence). ) Is transmitted to the posted message management center 2 as question message information.

  When the question text is input, as shown in FIG. 12, a question icon 62 indicating that there is a posted question text is newly displayed at the question point X of the posted question text.

  After that, when the user selects the question icon 62 on the map image 61 displayed on the display 38 as shown in FIG. 13, the question icon 62 is associated with the question point X displayed as shown in FIG. The new question text is displayed in the window 63. Furthermore, when there is already an answer to the question sentence associated with the question point X, the answer sentences that have been answered so far are also displayed. As a result, by selecting the question icon 62 displayed on the map image 61, the user browses the question sentence posted by himself or another user as a question regarding the point and the answer sentence to the question sentence. Is possible. Also, by selecting the answer button 64 displayed in the window 63, it is possible to post an answer sentence as an answer to the displayed question sentence.

Next, the question message posting process program executed in the posted message management center 2 will be described.
First, in S <b> 11, the CPU 21 receives the respondent location information request transmitted from the communication terminal 6.

  Next, in S12, the CPU 21 transmits a respondent position information request to the communication terminal 6 of the respondent (a user other than the questioner is applicable). The respondent position information request is a signal for requesting information on the current position of the respondent and the history of the current position at the present time (that is, when the questioner posts a question sentence) as described above. Note that the communication terminal 6 to which the respondent location information request is transmitted in S12 may be transmitted to the communication terminals 6 of all users other than the questioner, or within a predetermined distance (for example, within 10 km) from the question point. You may transmit only to the communication terminal 6 of the user who is in.

  Thereafter, in S13, the CPU 21 receives the respondent position information returned from each communication terminal 6 that has transmitted the respondent position information request. The respondent position information received in S13 is information on the current position of the respondent and the history of the current position at the present time (that is, when the questioner posts a question sentence).

  Subsequently, in S14, the CPU 21 transmits the respondent position information received in S13 to the communication terminal 6 of the questioner. The communication terminal 6 that has received the respondent position information determines whether or not to limit the input of the question text by comparing the question point with the current position of the respondent and the history of the current position as will be described later. To do.

  Next, in S15, the CPU 21 receives the question message information transmitted from the communication terminal 6.

  Subsequently, in S16, the CPU 21 stores the question message information received in S15 in the posted message information DB 8 (FIG. 3). Note that the question text information stored in the posted text information DB 8 is configured to be browseable with respect to the communication terminal 6 that has requested browsing.

Next, the question message posting process program executed in the respondent's communication terminal 6 will be described.
First, in S21, the CPU 21 receives the respondent location information request transmitted from the posted text management center 2.

  Next, in S <b> 22, the CPU 21 acquires responder position information regarding the current position of the communication terminal 6 (that is, the user 5) and the history of the current position using the GPS 40 or the like mounted on the communication terminal 6. Note that the current position of the user 5 acquired in S22 is the current position of the respondent who answers the question text (more specifically, the position of the respondent when the questioner posts the question text). Or the current location history.

  Subsequently, in S23, the CPU 21 transmits the respondent position information acquired in S22 to the posted message management center 2. The post message management center 2 that has received the respondent position information further transmits the respondent position information received from each communication terminal 6 of the respondent to the questioner's communication terminal 6 as described above.

  Next, a sub-process of the question sentence input restriction determination process executed in S5 will be described with reference to FIG. FIG. 15 is a flowchart of a sub-processing program for the question text input restriction determination process.

  First, in S31, the CPU 31 determines whether or not the question point is on the road based on the question point (position information associated with the question sentence) acquired in S2 and the map information. The map information may be acquired from the memory 32 in the communication terminal 6 or may be acquired by communication from an external server.

  And when it determines with a question point being on a road (S31: YES), it transfers to S32. On the other hand, when it is determined that the question point is not on the road (S31: NO), the process proceeds to S33. Even if the question point is not on the road, the question point may be considered to be on the road if it is within a predetermined distance from the road (for example, 5 mm on the map image).

  In S32, the CPU 31 performs a road determination process (FIG. 16) described later. The road determination process is a process for determining whether or not to restrict the input of the user's question text based on the question location associated with the question text that asks about the road, the current position of the respondent, and the like. .

  In S33, the CPU 31 determines whether or not the question point is on public transportation such as a station, a railroad, or a stop based on the question point (position information associated with the question sentence) acquired in S2 and the map information. judge.

  And when it determines with a question point being on public transport (S33: YES), it transfers to S34. On the other hand, when it is determined that the question point is not on public transportation (S33: NO), the process proceeds to S35. Even if the question point is not on public transport, the question point may be considered to be on public transport if it is within a predetermined distance from the public transport (for example, 5 mm on the map image).

  In S34, the CPU 31 performs a public traffic determination process (FIG. 19) described later. In addition, the public transportation determination process restricts the input of the user's question text based on the question point associated with the question text on which the question about public transport such as railroad, bus, ferry, etc., the current position of the respondent, etc. This is a process for determining whether or not.

  On the other hand, in S35, the CPU 31 determines whether or not the question point is on the facility based on the question point (position information associated with the question sentence) acquired in S2 and the map information.

  When it is determined that the question point is on the facility (S35: YES), the process proceeds to S36. On the other hand, when it is determined that the question point is not on the facility (S35: NO), the process proceeds to S37. Even if the question point is not on the facility, the question point may be considered to be on the facility if it is within a predetermined distance from the facility (for example, 5 mm on the map image).

  In S36, the CPU 31 performs a later-described facility determination process (FIG. 22). The facility determination process is a process for determining whether or not to restrict the input of the user's question text based on the question location associated with the question text that asks about the facility, the current position of the respondent, and the like. .

  On the other hand, in S37, the CPU 31 performs a range determination process (FIG. 25) described later. The range determination process is a process for determining whether or not to restrict the input of the user's question sentence based on the question point associated with the question sentence whose content cannot be specified from the question point, the current position of the respondent, or the like. It is.

  Next, the sub-process of the road determination process executed in S32 will be described with reference to FIG. FIG. 16 is a flowchart of a sub-processing program for road determination processing.

  First, in S41, the CPU 31 specifies a section of a road that is a question target (hereinafter referred to as a question target section) based on the question point (position information associated with the question sentence) acquired in S2 and the map information. . Specifically, the road link including the question point is specified as the question target section. When the question point is not on the link, the road link closest to the question point is specified as the question target section. The map information may be acquired from the memory 32 in the communication terminal 6 or may be acquired by communication from an external server. The question target section may be specified not by a link but by a route number (for example, prefectural road XX line) or a section at a predetermined distance from the question point (for example, a section within 10 km before and after).

  Next, in S42, the CPU 31 determines whether there is at least one respondent in the question target section based on the current position of the respondent acquired in S4 and the question target section specified in S41. To determine. It should be noted that the number of respondents used as a determination criterion may be two or more (for example, it is determined whether there are five or more respondents).

  If it is determined that there is an answerer within the question target section (S42: YES), the process proceeds to S43. On the other hand, when it is determined that there is no respondent in the question target section (S42: NO), the process proceeds to S44.

  In S43, the CPU 31 recognizes that there is an answerer who can know the correct answer of the question sentence because the answerer is located in the same link of the question point (that is, the link subject to the question of traffic jam or regulation) It is determined that “the user's question text input is not restricted”. Thereafter, the process proceeds to S6. As a result, the question text input screen is displayed on the communication terminal 6 in S8, and the questioner can post the question text.

  In S44, based on the respondent's current position history acquired in S4 and the question target section specified in S41, the CPU 31 passes within the predetermined time period (for example, 10 minutes) (or 10 minutes) (or It is determined whether or not there are at least one respondent within a predetermined distance (for example, within 3 km) from the question target section. Note that the predetermined time is a threshold value stored in a memory or the like, and is set in consideration of a user's memory and the like. Further, the number of respondents as determination criteria may be two or more (for example, it is determined whether there are five or more respondents).

  If it is determined that there are respondents within a predetermined time after passing through the question target section (S44: YES), that is, it is determined that the respondent was located in the question target section within the latest predetermined time. In the case, the process proceeds to S43. And since the respondent was located until recently in the same link at the question point (ie, the link that is subject to trafficking and regulatory questions), it is recognized that there are respondents who can know the correct answer of the question text, It is determined that the user's question text input is not restricted.

  On the other hand, when it is determined that there are no respondents who have passed through the question target section, or that a predetermined time or more has passed since the passage (S44: NO), that is, the question target section within the most recent predetermined time If it is determined that there is no respondent located at S, the process proceeds to S45.

  In S45, the CPU 31 can know the correct answer of the question sentence because there is no respondent in the same link at the question point (that is, the link subject to trafficking or regulation), and there is no history of having been recently. It is determined that there is no respondent, and it is determined that “restrict user input of question text”. Thereafter, the process proceeds to S6. As a result, the question text input screen is not displayed on the communication terminal 6 (S7), and the questioner cannot post the question text.

Hereinafter, the determination process of S42 to S45 will be described with a specific example.
17 and 18, a case will be described in which there are users A and B as respondents, and a point X on the road is designated as a question point when a questioner posts a question. In the example shown in FIG. 17, the user A who is in the same link 74 as the question point X is an answerer who can know the correct answer of the question text (that is, the traffic congestion status of the link 74). Further, the user B who is not located in the same link 74 as the question point X but is within a predetermined time after passing through the link 74 becomes an answerer who can know the correct answer of the question text. Therefore, in the example shown in FIG. 17, it is determined that “input of the question text of the user is not restricted”.
On the other hand, in the example shown in FIG. 18, the users A and B are not in the same link 74 as the question point X, and are not within a predetermined time after passing through the link 74. That is, neither of the users A and B can know the correct answer of the question sentence (that is, the traffic condition of the link 74). Therefore, in the example shown in FIG. 18, it is determined that “the user's question text input is restricted”.

  Next, the sub-process of the public traffic determination process executed in S34 will be described with reference to FIG. FIG. 19 is a flowchart of a sub-processing program for public transportation determination processing.

  First, in S51, the CPU 31 specifies a public transport route (hereinafter referred to as a question target route) that is a question target based on the question point (position information associated with the question sentence) and map information acquired in S2. To do. Specifically, when the question point is on the route, the route is identified as the question target route. If the question point is not on the route, the route closest to the question point is identified as the question target route. The map information may be acquired from the memory 32 in the communication terminal 6 or may be acquired by communication from an external server. In addition to buses and trains, public transportation includes monorails, cable cars, and ferries. In S51, not all the sections of the public transportation route that is the subject of the question, but only the sections that are affected by the event that occurs at the question point (for example, the sections between the stations and stops before and after the question point). It may be specified.

  Next, in S52, the CPU 31 determines based on the current position of the respondent acquired in S4 and the question target route specified in S51, the question target route or the station of the question target route (such as a stop or a landing point). It is determined whether or not there is at least one respondent within the same. It should be noted that the number of respondents used as a determination criterion may be two or more (for example, it is determined whether there are five or more respondents).

  If it is determined that there is an answerer in the question target route or the station of the question target route (S52: YES), the process proceeds to S53. On the other hand, when it is determined that there is no respondent in the question target route or the station of the question target route (S52: NO), the process proceeds to S54.

  In S53, the CPU 31 knows the correct answer of the question sentence because there is an answerer in the question target route or the station of the question target route (that is, the user gets on public traffic on the question target route). It is determined that there are respondents to be obtained, and it is determined that “the user's input of question text is not restricted”. Thereafter, the process proceeds to S6. As a result, the question text input screen is displayed on the communication terminal 6 in S8, and the questioner can post the question text.

  On the other hand, in S54, the CPU 31 determines that the respondent is within a predetermined distance (for example, within 500 m) from the station of the question target route based on the current position of the respondent acquired in S4 and the question target route specified in S51. It is determined whether or not there is at least one person. The predetermined distance is a threshold value stored in a memory or the like, and is set in consideration of the moving speed of the user. Further, the number of respondents as determination criteria may be two or more (for example, it is determined whether there are five or more respondents).

  If it is determined that there are respondents within a predetermined distance from the station on the question target route (S54: YES), the process proceeds to S53. And since it is expected that the respondent has been located in the question target route until recently (that is, it has been on the public transportation of the route that is the question target until recently), it can know the correct answer of the question text It is determined that there is a respondent, and it is determined that “the user's input of question text is not restricted”.

  On the other hand, when it is determined that there is no respondent at a predetermined distance from the station on the question target route (S54: NO), the process proceeds to S55.

  In S55, the CPU 31 determines the position within a predetermined time (for example, 10 minutes) closest to the station of the question target route based on the history of the current position of the respondent acquired in S4 and the question target route specified in S51. It is determined whether there are at least one respondent. Note that the predetermined time is a threshold value stored in a memory or the like, and is set in consideration of a user's memory and the like. Further, the number of respondents as determination criteria may be two or more (for example, it is determined whether there are five or more respondents).

  If it is determined that there is an answerer located within the nearest predetermined time at the station on the question target route (S55: YES), the process proceeds to S53. And since respondents have been located in the question target route until recently (that is, they have been on the public transport of the route that is the question target until recently), there are respondents who can know the correct answer of the question text Then, it is recognized and it is determined that “the user's question text input is not restricted”.

  On the other hand, if it is determined that there is no respondent located within the nearest predetermined time at the station on the question target route (S55: NO), the process proceeds to S56.

  In S56, the CPU 31 recognizes that there is no respondent who can know the correct answer of the question sentence because the respondent has not boarded the public transportation on the question target route and there is no history of riding until recently. , “Restrict user input of question text” is determined. Thereafter, the process proceeds to S6. As a result, the question text input screen is not displayed on the communication terminal 6 (S7), and the questioner cannot post the question text.

Hereinafter, the determination process of S52 to S56 will be described with a specific example.
20 and 21, a case where there are users A to C as respondents and the questioner specifies a question point Z on the route 75 as a question point when posting a question will be described. In the example shown in FIG. 20, the user A who is in the same route as the question target route 75 and the user B who is in the station 76 of the question target route 75 give the correct answer to the question (that is, the operation status of the route 75, etc.). Become a learner. In addition, for the user C who is not located within the question target route 75 and the station 76 but is located within a predetermined distance from the station 76 (or located at the station 76 until a predetermined time), the answer that can know the correct answer of the question text. Become a person. Therefore, in the example shown in FIG. 20, it is determined that “input of the question text of the user is not restricted”.
On the other hand, in the example shown in FIG. 21, the users A to C are not located in the question target route 75 and the station 76 but are located away from the station 76. That is, none of the users A to C know the correct answer of the question text (ie, the operation status of the route 75, etc.). Therefore, in the example shown in FIG. 21, it is determined that “the user's input of the question text is restricted”.
In the above example, when the respondent is not located in the question target route 75 and the station 76 but is located within a predetermined distance from the station 76 (or located in the station 76 until a predetermined time), the question text is input. Although the example which does not restrict | limit is demonstrated, when a respondent is not located in the questionable route 75 and the station 76, but is located within the predetermined distance from the station 76 and is located at the station 76 until a predetermined time, the question text It is good also as a structure which does not restrict | limit an input. Specifically, this can be dealt with by changing the flow of FIG. 19 as described below. That is, the NO determination from S54 to S55 in FIG. 19 is changed to a YES determination meaning a condition, the process of S54 is executed after the process of S54 is executed, and the YES determination following S54 to S53 is deleted, and then S54 is deleted. From S55 to S56, a case where NO determination is made in the determination processing of S54 is inserted, and when NO determination is made, the processing of S56 is executed, so that it is not located in the question target route 75 and the station 76, but the station The case where it is located within the predetermined distance from 76 and is located at the station 76 until a predetermined time can be determined. In this case, it is possible to determine whether there are respondents leaving the station, so determine whether there are respondents who are more likely to know the correct answer of the question text. Will be able to.

  Next, the sub-process of the facility determination process executed in S36 will be described with reference to FIG. FIG. 22 is a flowchart of a sub-processing program for facility determination processing.

  First, in S61, the CPU 31 identifies a facility that is a question target (hereinafter referred to as a question target facility) based on the question point (position information associated with the question text) and map information acquired in S2. Specifically, when the question point is on the facility, the facility is specified as the question target facility. When the question point is not on the facility, the facility closest to the question point is identified as the question target facility. The map information may be acquired from the memory 32 in the communication terminal 6 or may be acquired by communication from an external server.

  Next, in S62, the CPU 31 determines whether there is at least one respondent located in the question target facility based on the current position of the respondent acquired in S4 and the question target facility specified in S61. Judge whether or not. Further, the number of respondents as determination criteria may be two or more (for example, it is determined whether there are five or more respondents).

  When it is determined that there is an answerer located in the question target facility (S62: YES), the process proceeds to S63. On the other hand, when it is determined that there is no respondent in the question target facility (S62: NO), the process proceeds to S64.

  In S63, since there is an answerer in the question target facility, the CPU 31 determines that there is an answerer who can know the correct answer of the question text, and determines that “input of the user's question text is not restricted”. Thereafter, the process proceeds to S6. As a result, the question text input screen is displayed on the communication terminal 6 in S8, and the questioner can post the question text.

  On the other hand, in S64, the CPU 31 determines that at least a respondent who is within a predetermined distance (for example, within 500 m) from the question target facility is based on the current position of the respondent acquired in S4 and the question target facility specified in S61. Determine whether one or more people are present. The predetermined distance is a threshold value stored in a memory or the like, and is set in consideration of the moving speed of the user. Further, the number of respondents as determination criteria may be two or more (for example, it is determined whether there are five or more respondents).

  If it is determined that there is an answerer at a predetermined distance from the question target facility (S64: YES), the process proceeds to S63. And since the respondent is expected to have stayed in the target facility until recently, it is determined that there is a respondent who can know the correct answer of the question sentence, and it is determined that “the user does not restrict the input of the question sentence” To do.

  On the other hand, when it is determined that there is no respondent at a predetermined distance from the question target facility (S64: NO), the process proceeds to S65.

  In S65, the CPU 31 determines the answer located within the predetermined time (for example, 10 minutes) closest to the question target facility based on the history of the current position of the respondent acquired in S4 and the question target facility specified in S61. It is determined whether there is at least one person. Note that the predetermined time is a threshold value stored in a memory or the like, and is set in consideration of a user's memory and the like. Further, the number of respondents as determination criteria may be two or more (for example, it is determined whether there are five or more respondents).

  If it is determined that there is an answerer located within the nearest predetermined time in the question target facility (S65: YES), the process proceeds to S63. Then, since the respondent has stayed at the question target facility until recently, it is determined that there is a respondent who can know the correct answer of the question text, and it is determined that “input of the question text of the user is not restricted”.

  On the other hand, when it is determined that there is no respondent located within the predetermined time immediately before the question target facility (S65: NO), the process proceeds to S66.

  In S66, the CPU 31 determines that there is no respondent who can know the correct answer of the question sentence because there is no respondent staying in the question target facility and there is no history of staying until recently. "Restrict input of question text". Thereafter, the process proceeds to S6. As a result, the question text input screen is not displayed on the communication terminal 6 (S7), and the questioner cannot post the question text.

Hereinafter, the determination process of S62 to S66 will be described with a specific example.
23 and FIG. 24, a case will be described in which there are users A and B as respondents, and the question point P on the facility 77 is designated as the question point when the questioner posts a question. In the example shown in FIG. 23, the user A in the question target facility 77 becomes an answerer who can know the correct answer of the question text (that is, the congestion status of the question target facility 77). In addition, the user B who is not located in the question target facility 77 but is located within a predetermined distance from the question target facility 77 (or located in the question target facility 77 until a predetermined time) can know the correct answer of the question sentence. Become a respondent. Therefore, in the example shown in FIG. 23, it is determined that “the user's input of the question text is not restricted”.
On the other hand, in the example shown in FIG. 24, the users A and B are not located in the question target facility 77 but are located away from the question target facility 77. That is, neither of the users A and B can know the correct answer to the question text (that is, the congestion status of the question target facility 77). Therefore, in the example shown in FIG. 24, it is determined that “the user's question text input is restricted”.
In the above example, an example in which the input of the question text is not limited when the respondent is located within a predetermined distance from the question target facility 77 (or located at the question target facility 77 until a predetermined time) has been described. It is good also as a structure which does not restrict | limit the input of a question sentence, when a person is located within the predetermined distance from the question object facility 77 and is located in the question object facility 77 until a predetermined time. Specifically, this can be dealt with by changing the flow of FIG. 22 as described later. That is, the NO determination following S64 to S65 in FIG. 22 is changed to a YES determination meaning a condition, the processing of S64 is executed after executing the processing of S64, and the YES determination following S64 to S63 is deleted and then S64 is performed. From S65 to S66, a case where NO determination is made in the determination processing of S64 is inserted, and when NO determination is made, the processing of S66 is executed, so that it is located within a predetermined distance from the question target facility 77, and The case where it is located in the question target facility 77 until a predetermined time can be determined. In this case, since it is possible to determine whether there are respondents leaving the question target facility, it is determined whether there are respondents who are more likely to know the correct answer of the question sentence. Will be able to.

  Next, the sub-process of the range determination process executed in S37 will be described with reference to FIG. FIG. 25 is a flowchart of a sub-processing program for range determination processing.

  First, in S71, the CPU 31 specifies an area that is a question target (hereinafter referred to as a question target area) based on the question point (position information associated with the question text) and map information acquired in S2. Specifically, an area within a predetermined distance (for example, 500 m) centered on the question point is specified as the question target area. The question target area may be a prefecture or a municipality where the question point is included. Further, the map information may be acquired from the memory 32 in the communication terminal 6 or may be acquired by communication from an external server.

  Next, in S72, the CPU 31 determines whether there are at least one respondent located in the question target area based on the current position of the respondent acquired in S4 and the question target facility specified in S61. Judge whether or not. Further, the number of respondents as determination criteria may be two or more (for example, it is determined whether there are five or more respondents).

  When it is determined that there is an answerer located in the question target area (S72: YES), the process proceeds to S73. On the other hand, when it is determined that there is no respondent in the question target area (S72: NO), the process proceeds to S74.

  In S73, since the respondent is located in the question target area, the CPU 31 determines that there is a respondent who can know the correct answer of the question text, and determines that “the user does not restrict the input of the question text”. Thereafter, the process proceeds to S6. As a result, a questioner input screen is displayed on the communication terminal 6 in S8, and the questioner can post a question sentence.

  On the other hand, in S74, since the respondent is not located in the question target area, the CPU 31 determines that there is no respondent who can know the correct answer of the question text, and determines that “input of user question text is restricted”. To do. Thereafter, the process proceeds to S6. As a result, the question text input screen is not displayed on the communication terminal 6 (S7), and the questioner cannot post the question text.

Below, the determination process of said S72-S74 is given and demonstrated with a specific example.
26 and 27, a case will be described in which there are users A and B as respondents and the question point Q is designated as the question point when the questioner posts a question. In the example shown in FIG. 30, the users A and B who are in the question target area 80 within a predetermined distance from the question point Q can know the correct answer of the question text (that is, the weather around the question point Q, etc.). It is determined that the input of the question text is not restricted.
On the other hand, in the example shown in FIG. 24, the users A and B are not located in the question target area 80. That is, neither of the users A and B can know the correct answer of the question sentence (that is, the weather around the question point Q, etc.). Therefore, in the example shown in FIG. 27, it is determined that “the user's question text input is restricted”.

  Next, an answer message posting process program executed in the communication terminal 6 and the posted message management center 2 will be described with reference to FIG. FIG. 28 is a flowchart of the reply message posting processing program according to this embodiment. Here, the answer sentence posting processing program is executed after the power of the communication terminal 6 is turned on (especially after the ACC of the mounted vehicle is turned on when the communication terminal 6 is a vehicle-mounted device). Is a program for managing and storing the posted answer sentence when the answer sentence for the question sentence browsed by the user 5 is posted on the computer network. In addition, an answer sentence contribution process program is an application containing an answer sentence contribution process program and an answer sentence contribution process program, when an answer sentence contribution process program is started from a portable terminal (for example, a smart phone, a mobile phone, a tablet terminal). It may be executed after being activated.

First, an answer sentence posting processing program executed in the communication terminal 6 will be described.
In S <b> 81, the CPU 31 performs an operation for requesting browsing of the question sentence based on the operation of the user who is accepted by the input operation unit 39 (the user who owns the terminal and who becomes the answerer who posts the answer sentence, the same applies hereinafter). Determine whether it was done.

  Specifically, as shown in FIG. 13, when the user selects a question icon 62 (that is, a question point) on the map image 61 displayed on the display 38, an operation for requesting browsing of the question sentence is performed. It is determined that Note that when a search condition for searching for a question sentence is input, it may be determined that an operation for requesting browsing of the question sentence has been performed. As a search condition, it is also possible to use a search word (for example, “XX street”, “traffic jam”, etc.) included in the question sentence, a time when the question sentence is posted, and a condition that specifies the question point. For example, if a condition for setting a question point as XX city is input, it becomes possible to search for a question sentence having XX city as a question point.

  If it is determined as a result of the determination in S81 that an operation requesting browsing of the question text has been performed in the input operation unit 39 (S81: YES), the process proceeds to S82. On the other hand, when it is determined that the operation for requesting browsing of the question sentence is not performed in the input operation unit 39 (S81: NO), the answer sentence posting process program is terminated.

  In S <b> 82, the CPU 31 transmits a request for browsing a question sentence based on a user operation to the posted sentence management center 2. Specifically, when the question icon 62 (see FIG. 13) is selected on the map image 61, a browsing request for requesting browsing of the question text corresponding to the selected question icon 62 is transmitted, and the search condition is When input, a browsing request for requesting browsing of a question sentence corresponding to the search condition is transmitted. The post message management center 2 that has received the request for browsing the question text, as will be described later, out of the posted text posted on the computer network based on the received read request (for example, a question text corresponding to the read request (for example, As shown in FIG. 13, when the question icon 62 is selected on the map image 61, a question sentence associated with the selected question icon 62 is extracted (S92). If an answer sentence has already been posted for the question sentence corresponding to the browsing request, the answer sentence is also extracted.

  Next, in S <b> 83, the CPU 31 receives information related to the question message transmitted from the posted message management center 2. The information related to the question text received in S83 is information related to the question text extracted from the question text posted on the computer network based on the browsing request transmitted in S82. Further, the information related to the posted text includes, along with the text of the posted text, the posting time when the posted text is posted, the type of posted text (that is, the question text), the question point, the ID of the poster, and the like. In addition, when the information regarding an answer sentence is also transmitted from the contribution sentence management center 2, the information regarding an answer sentence is also received.

  Subsequently, in S84, the CPU 31 displays information on the question sentence received in S83 on the display 38 (see FIG. 29). Specifically, the text of the question text, the posting time when the question text was posted, and the ID of the poster are displayed. Further, a voice for reading out the question sentence may be output from the speaker 36. The posting time and the poster ID may not be displayed. Furthermore, when there is already an answer to the question sentence received in S83, the answer sentences that have been answered so far are also displayed.

  Thereafter, in S85, based on the user operation received by the input operation unit 39, the CPU 31 has performed an operation indicating that the user intends to make an answer to the question text displayed on the display 38 in S84. To determine. Specifically, as shown in FIG. 29, when the user selects the answer button 64 displayed together with the question text on the window 63 of the display 38, the user intends to answer the displayed question text. It is determined that the indicated operation has been performed.

  If it is determined that an operation indicating that the user intends to make an answer to the displayed question message is performed (S85: YES), the process proceeds to S86. On the other hand, if it is determined that an operation indicating that the user intends to make an answer to the displayed question message is not performed (S85: NO), the answer message posting process program is terminated.

  In S86, the CPU 31 displays an answer sentence input screen for inputting an answer sentence on the display 38. The answer text input screen is a screen for allowing the user to input an answer text.

Here, FIG. 30 and FIG. 31 are diagrams for explaining a user's reply sentence posting operation in the communication terminal 6.
When the answer button 64 (see FIG. 29) displayed together with the question text is selected, an answer text input screen 65 shown in FIG. 30 is displayed. Here, the answer sentence input screen 65 displays a list of a plurality of fixed phrases that are answer candidates. Then, the user inputs an answer sentence by selecting a sentence content as an answer sentence from a plurality of fixed sentences displayed on the display 38. In addition, the input of an answer sentence is good also as a structure which makes a user input a sentence arbitrarily, as shown in FIG. 31, besides making it select from a fixed form sentence. Moreover, it is desirable to change the contents of the fixed phrase displayed on the answer sentence input screen 65 according to the contents of the question sentence to be answered. For example, when answering a question sentence that asks about the traffic situation, the answer indicating the degree of traffic congestion is displayed as a standard sentence, and when answering a question sentence that asks about the train operation situation, the train operation is smooth. In the case of answering a question sentence that asks about the congestion status of the facility, an answer indicating the degree of congestion of the facility is displayed as a fixed sentence. Note that the fixed phrase to be displayed is stored in the fixed phrase DB of the memory 32 in advance, but the fixed phrase DB may be provided in the server and acquired from the server.

  When an answer sentence is input on the answer sentence input screen 65, the answer sentence input as described later is transmitted to the posted message management center 2. Thereafter, when the user selects the question icon 62 on the map image 61 displayed on the display 38, the newly answered answer sentence is displayed together with the question sentence as shown in FIG.

  Next, in S <b> 87, the CPU 31 obtains the text content of the answer sentence based on the user operation input via the input operation unit 39. The sentence content of the answer sentence is an arbitrary sentence selected by the user from the standard sentence displayed on the display 38 as described above or input by the user (see FIGS. 30 and 31).

  Subsequently, in S88, the CPU 31 uses the answer sentence acquired in S87, the posting time when the answer sentence was posted, the ID of the poster, and the type of the posted sentence (that is, the answer sentence) as the answer sentence information. Transmit to the management center 2.

Next, an answer message posting process program executed in the posted message management center 2 will be described.
First, in S <b> 91, the CPU 21 receives a question text browsing request transmitted from the communication terminal 6.

  Next, in S92, the CPU 21 executes a search process for searching for a question sentence corresponding to the browsing request from the posted sentences posted on the computer network based on the browsing request for the question sentence received in S91. . Specifically, information on the question sentence corresponding to the browsing request is extracted from the posted sentence information (FIG. 3) stored in the posted sentence information DB 8. Note that the information related to the extracted question text includes information related to the question point of the question text.

  Thereafter, in S93, the CPU 21 transmits information on the question sentence extracted in S92 (including the question point) to the communication terminal 6 that has requested browsing of the question sentence. As a result, in the communication terminal 6 that has requested browsing of the question text, information on the question text desired by the user is output (S84).

  In S94, the CPU 21 receives the response text information transmitted from the communication terminal 6.

  Subsequently, in S95, the CPU 21 stores the reply message information received in S94 in the posted message information DB 8 (FIG. 3). Note that the response text information stored in the posted text information DB 8 is configured to be browseable with respect to the communication terminal 6 that has requested browsing.

As described above in detail, in the information sharing system 1 and the information sharing method by the information sharing system 1 according to the present embodiment, the question text posted by the communication terminal 6 of the user 5 is shared by a plurality of users on the computer network. When a question sentence posting operation is performed from the user 5 who is a questioner, the location information of the respondent is acquired together with the question point designated by the questioner (S2, S4) Since the input of the question text to the communication terminal 6 is restricted based on the question point and the position information of the respondent (S7 to S10), the correct answer can be given when posting the question text on the computer network. It is possible to limit the input of a question sentence in a situation where there is a high possibility that an appropriate answer cannot be obtained, such as when there is no user who can know. As a result, it is possible to improve the reliability of information posted by the user.
In addition, when there is no respondent corresponding to the question point associated with the question text, the question text is not input to the communication terminal 6 so that there is no user who can know the correct answer. It is possible not to post in advance about the question sentence to be asked. As a result, it is possible to prevent erroneous information from being posted on the computer network.
In addition, when there is a respondent corresponding to the question point associated with the question sentence, the standard sentence specifying the question related to the question point is extracted from a plurality of types of fixed sentence, and the extracted fixed sentence Since either one is selectively input as a question sentence, it becomes possible for the questioner to input a fixed sentence that has a high possibility of obtaining a correct answer from a plurality of types of fixed sentences as a question sentence.
In addition, when there is an answerer corresponding to the question point associated with the question sentence, the word related to the question point is specified, and the questioner is guided to construct the question sentence using the specified word. Therefore, even if it is a structure which can input the text of a question sentence freely, it becomes possible to make a questioner input a question sentence with high possibility of obtaining a correct answer.
In addition, when there is no respondent within a predetermined distance from the question point associated with the question text, the question text will not be entered, so if there is no respondent who can know the status of the question point, It is estimated that there is a low possibility of obtaining a correct answer to the question regarding the question point, and it is possible to configure so that the question sentence is not posted in advance.
In addition, since there is a restriction that the question text is not entered when there is no respondent on the same link, the same route, or the same facility as the question location associated with the question text, the answer that can know the situation of the question location When there is no person, it is estimated that there is a low possibility that a correct answer is obtained with respect to the question regarding the question point, and it is possible to configure so that the question sentence is not posted in advance.
In addition, there is a respondent who can know the situation of the question point because the question point associated with the question sentence is restricted so that the question sentence is not input when there is no respondent who was within the predetermined time immediately before. If not, it is estimated that there is a low possibility of obtaining a correct answer to the question regarding the question point, and it is possible to configure so that the question sentence is not posted in advance.
Moreover, since the position on the map designated by the questioner is acquired as the question point, that is, the position information (question position information) associated with the question sentence, is there a respondent who can know the correct answer to the question sentence? It is possible to appropriately determine whether or not based on the position on the map designated by the questioner.
Moreover, since the input of the question sentence is limited based on the relationship between the position information associated with the question sentence and the position information indicating the position of the respondent at the time of posting the question sentence, the correct answer to the question sentence It is possible to accurately determine whether or not there is an answerer at a position where the user can know.
In addition, when the question icon 62 displayed at the position specified by the question point associated with the question sentence is selected by the user, the question sentence is output from the communication terminal 6, so the point on the map and the point The communication terminal 6 can output the related question text in association with the question text. Therefore, the user can easily select and output a question sentence desired to be viewed on the map.
When the question icon 62 displayed at the position specified by the question point associated with the question text is selected by the user, the answer text to the question text is output from the communication terminal 6 together with the question text. The question text and the answer text can be associated with each other and output at the terminal.

Note that the present invention is not limited to the above-described embodiment, and various improvements and modifications can be made without departing from the scope of the present invention.
For example, in the present embodiment, the communication terminal 6 is configured to execute the question sentence input restriction determination process of S5 of the question sentence posting process program (FIG. 5), but the posted sentence management center 2 executes part or all of the processes. It is good also as composition to do. In that case, the determination result of the question message input restriction determination process is configured to be transmitted from the posted message management center 2 to the communication terminal 6.

  In the present embodiment, when it is determined in the question sentence input restriction determination process of S5 that “the user's question sentence input is not restricted”, a question related to the question point is selected from a plurality of types of fixed sentences. Although the defined fixed sentence is extracted and displayed as a selection candidate, all the fixed sentences may be displayed as selection candidates regardless of the question point.

  Moreover, in this embodiment, as the position information (question position information) associated with the question sentence, information on the question point arbitrarily designated on the map by the questioner at the time of the question is used, but the question sentence is posted. Position information (posting position information) indicating the position of the questioner at the time may be used. In addition, as the location information, administrative divisions, link numbers, facility IDs, and the like may be associated instead of location coordinates.

DESCRIPTION OF SYMBOLS 1 Information sharing system 2 Posting sentence management center 3 Posting sentence search server 4 Posting sentence information management server 5 User 6 Communication terminal 8 Posting sentence information DB
11 Information management ECU
41 Communication terminal ECU

Claims (13)

In an information sharing system for sharing information on a posted message posted by the user among a plurality of users on a computer network composed of a user terminal and a server,
Question sentence information acquisition means for acquiring a question sentence input via the terminal together with position information associated with the question sentence;
Question text browsing means for enabling the user to browse the question text acquired by the question text information acquiring means on a computer network;
An answer sentence information acquisition means for acquiring an answer sentence input via the terminal as an answer to the question sentence;
Answer text browsing means for enabling the user to read the answer text acquired by the answer text information acquiring means on a computer network;
Respondent position information acquisition means for acquiring position information of a respondent who is the user who inputs the answer sentence;
Based on the question position information, which is position information to be associated with the question sentence, and the respondent position information, which is the position information of the respondent acquired by the respondent position information acquisition means, the question to the terminal An information sharing system comprising: a question sentence input restricting means for restricting sentence input.   The question sentence input restricting means restricts input of the question sentence to the terminal when there is no respondent corresponding to the question position that is the position specified by the question position information. The information sharing system according to claim 1. When there is the respondent corresponding to the question position, there is a fixed sentence extraction means for extracting the fixed sentence defining the question related to the question position from a plurality of types of fixed sentences,
The information sharing system according to claim 2, wherein the question sentence input restriction unit selectively inputs any one of the fixed phrases extracted by the fixed sentence extraction unit as the question sentence. A word specifying unit for specifying a word related to the question position when the respondent corresponding to the question position exists;
The question sentence input restricting means guides the questioner who is the user who posts the question sentence to compose the question sentence using the word specified by the word specifying means. The information sharing system according to claim 2.   5. The respondent corresponding to the question position is the respondent located within a predetermined distance from the question position specified by the question position information. The information sharing system described.   The respondent corresponding to the question position is the answerer located on the same link, on the same route, or on the same facility as the question position specified by the question position information. The information sharing system according to claim 4.   The respondent corresponding to the question position is the answerer located within the predetermined time nearest to the question position specified by the question position information. The information sharing system according to any one of the above.   The question text information acquisition means acquires, as the question position information, information specifying a position on a map designated by a questioner who is the user who posted the question text. Item 8. The information sharing system according to any one of Items 7. The question input limiting means, and characterized in that the pre-Symbol question is based on the respondent positional information indicating the position of the respondent at the time that is posted to limit the input of the question message to the terminal The information sharing system according to any one of claims 1 to 8. The question sentence browsing means is:
A map image is displayed on the terminal, and is located on the map image displayed on the terminal and specified by the question position information associated with the question sentence acquired by the question sentence information acquisition unit. Display the selection object,
The said question sentence acquired by the said question sentence information acquisition means is output from the said terminal, when the said selection target object is selected by the user, The Claim 1 thru | or 9 characterized by the above-mentioned. Information sharing system.   The answer sentence browsing means, when the selection target displayed at a position specified by the question position information associated with the question sentence to be answered by the answer sentence is selected by a user, The information sharing system according to claim 10, wherein the answer sentence is output together with the sentence. In an information sharing method for sharing information about a posted message posted by the user among a plurality of users on a computer network composed of a user terminal and a server,
Question sentence information acquisition means for acquiring the question sentence input via the terminal together with the position information associated with the question sentence;
Question sentence browsing means for allowing the user to view the question sentence acquired by the question sentence information acquiring step on the computer network,
An answer sentence information obtaining unit obtains an answer sentence input through the terminal as an answer to the question sentence; and
An answer sentence browsing step for enabling the user to view the answer sentence acquired by the answer sentence information acquiring step on the computer network,
Respondent position information acquisition means acquires the position information of the respondent who is the user who inputs the answer sentence;
The question sentence input restriction means is based on the question position information which is position information to be associated with the question sentence and the respondent position information which is the position information of the respondent acquired by the respondent position information acquisition step. And a question sentence input restriction step for restricting input of the question sentence to the terminal. In a terminal device for constructing an information sharing system for sharing information related to a posted message posted by a user with a plurality of users on a computer network configured with a server connected to be capable of bidirectional communication,
Question sentence information acquisition means for acquiring a question sentence input via the operation unit together with position information associated with the question sentence;
Question text browsing means for enabling the user to browse the question text acquired by the question text information acquiring means on a computer network;
An answer sentence information acquisition means for acquiring an answer sentence input via the operation unit as an answer to the question sentence;
Answer text browsing means for enabling the user to read the answer text acquired by the answer text information acquiring means on a computer network;
Respondent position information acquisition means for acquiring position information of a respondent who is the user who inputs the answer sentence;
Based on the question position information that is position information to be associated with the question sentence and the respondent position information that is the position information of the respondent acquired by the respondent position information acquisition means, via the operation unit. And a question sentence input restricting means for restricting input of the question sentence.

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