JP5839978B2 - Navigation device - Google Patents

Description

  The present invention relates to a technique for providing facility information in a navigation device.

  As a technology for providing facility information in the navigation device, a WWW server dedicated to providing facility information to the navigation device is provided on the interface network, and the facility information of the facility around the route notified from the navigation device is provided in the WWW server. A technique is known in which facility information registered by an information provider in a WWW server is searched for and provided to the requesting navigation device (Patent Document 1).

JP 2004-257951 A

  According to the above-described technique for providing a WWW server dedicated to providing facility information to the navigation device, the information that can be provided to the navigation device recognizes the WWW server dedicated to providing facility information and sends information to the WWW server. The facility information is limited to facility information registered in advance in the WWW server by a limited information provider who does not mind registering facility information. Therefore, it cannot be ensured that facility information that is significant for the user can be provided to the user of the navigation device with good freshness. In addition, it is necessary to provide a dedicated WWW server for providing facility information to the navigation device, and to operate and manage it.

  Accordingly, an object of the present invention is to provide a navigation apparatus user with facility information that is fresh and significant for the user without requiring a dedicated WWW server for providing the facility information to the navigation apparatus. To do.

  To achieve the above object, the present invention provides a navigation device that provides facility information to a user, a current position calculation unit that calculates a current position, and a guide image display unit that displays a guide image representing the current position on a map. In addition to accumulating posts posted by accepting postings of posted articles, each post extracted by extracting a posted article that matches the search key in response to a search request with a search key from the accumulated posted articles Retrieval using a facility name of a target facility which is a facility that provides the facility information to a user and a word representing a positive evaluation as a search key to an SNS (social networking service) server that returns a search result article sequence including a posted article Issuing a request via wireless communication, the search unit for acquiring the search result article sequence, and included in a plurality of posted articles included in the search result article sequence acquired by the search unit, A facility that calculates a phrase other than the phrase used as the search key as a key phrase, and displays information including the calculated key phrase as the facility information of the target facility in a superimposed manner at a position corresponding to the target facility in the guide image And an information display unit.

Here, such a navigation device may be configured to display the facility information including the number of posted articles including the key phrase included in the search result article string in the facility information display unit. Good.
In addition, in the navigation device, when the search result article string includes a plurality of posted articles together with the posted date and time of the posted articles, the search unit acquires the facility information display unit. Configured to calculate, as a key phrase, a phrase other than the phrase used as the search key, which is included in a plurality of posted articles within a predetermined period in the past in the posted article included in the retrieved search result article string. May be.

  In addition, in such a navigation device, a target category setting unit that receives designation of the category from among a plurality of categories of the target and sets the target category, and for each of the categories, the target of the category A category table in which words representing affirmative evaluation are registered, and the search unit registers the facility name of the target facility and the target category set by the target category setting unit in the category table. A search request using a phrase as a search key may be issued via wireless communication to acquire the search result article.

Further, such a navigation device may be configured to display the facility information of each target facility when the current position approaches the target facility in the facility information display unit.
Further, in such a navigation device, a posted article display unit that accepts a selection of facility information displayed by the facility information display unit and displays a list of posted articles that are extracted key words included in the facility information that has been selected. You may make it provide. Or, in such a navigation device, a posted article reading unit that receives a selection of the facility information displayed by the facility information display unit and outputs a voice that reads out a posted article in which key words included in the selected facility information are extracted. May be provided.

Further, in such a navigation device, a target category setting unit that accepts designation of the category from among a plurality of categories of the target and sets the target category, and for each of the categories, the target in the category It is also preferable to provide a category table in which the facility type related to the site is registered and a facility selection unit that selects a facility registered in the category table as the target facility with respect to the target category set by the target category setting unit. .
Further, in such a navigation device, a guidance route setting unit that sets a guidance route to a destination, and a facility selection unit that selects a facility around the guidance route as the target facility, the guidance image display unit The guide image representing the guidance route together with the current position may be displayed on the map.

Moreover, you may make it provide such a navigation apparatus with the facility selection part which selects the facility around the said current position as said object facility.
Moreover, you may make it provide such a navigation apparatus with the facility selection part which selects the facility located in the area designated on the said guidance image from the user as said object facility.
Moreover, you may make it provide such a navigation apparatus with the facility selection part which selects the facility designated on the said guidance image from the user as said object facility.
In addition, the navigation apparatus accepts an input to the input box in which the facility name of the target facility and the key word / phrase included in the facility information of the target facility are automatically input, and the text input to the input box It is also preferable to provide a posting section for posting the above-mentioned posting article to the SNS server via wireless communication.

  According to the navigation devices such as these, the navigation device obtained by the search by the phrase representing the positive evaluation using the posted articles with good freshness, which are posted by the unspecified number of contributors at any time on the SNS server. The positive information of the target facility that is considered significant for the user can be provided as the facility information of the target facility.

  In order to achieve the object, the present invention provides a navigation device that provides facility information to a user, a current position calculation unit that calculates a current position, and a guide that displays a guide image that represents the current position on a map. The image display unit and the posting of posted articles are accepted together with the posted coordinates representing the posted article's coordinates, and the posted articles are stored in correspondence with the posted coordinates, and the search request with the search coordinates and the search keyword is stored. In response to, a plurality of posted articles that are associated with posted coordinates that match the search coordinates and that match the search keyword are extracted from the accumulated posted articles, and the search results including each extracted posted article An SNS (social networking service) server that returns an article string is a word that expresses a positive evaluation with the coordinates of a target facility that is a facility providing the facility information to the user as search coordinates A search request that uses a phrase as a search keyword is issued via wireless communication, and the search unit that acquires the search result article sequence overlaps with a plurality of posted articles included in the search result article sequence acquired by the search unit The phrase that includes the facility name of the target facility and the phrase that is used as the search key is calculated as a key phrase, and the information including the calculated key phrase is the facility information of the target facility and the target of the guide image And a facility information display unit that displays the information in a position corresponding to the facility.

  Similarly, with such a navigation device, a navigation device obtained by a search using a word representing a positive evaluation using posted articles with good freshness posted by an unspecified number of contributors on the SNS server as needed. The positive information of the target facility considered significant for the user can be provided as the facility information of the target facility.

  As described above, according to the present invention, it is possible to provide facility information that is fresh and significant to the user of the navigation device without requiring a WWW server dedicated to providing facility information to the navigation device. it can.

It is a block diagram which shows the structure of the vehicle-mounted system which concerns on embodiment of this invention. It is a figure which shows the map database and search word table which concern on embodiment of this invention. It is a block diagram which shows the structure of the SNS server which concerns on embodiment of this invention. It is a figure which shows the example of a display of the vehicle-mounted system which concerns on embodiment of this invention. It is a flowchart which shows the recommendation information provision process of the vehicle-mounted system which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described.
FIG. 1 shows the configuration of the information system according to this embodiment.
As shown in the figure, the information system includes an in-vehicle system 1 mounted in each automobile, an Internet 2 that accommodates the in-vehicle system 1 via wireless communication, and a plurality of SNS (social networking service) servers 3 connected to the Internet 2. It is comprised including.

  The in-vehicle system 1 includes an operation unit 11, a display device 12, a wireless communication device 13 for connecting to the Internet 2, a vehicle state sensor 14, a GPS receiver 15, a map database 16, and a search word table. 17, a communication control unit 18 that controls communication using the wireless communication device 13, a navigation unit 19, an SNS client 20, a memory 21, a control unit 22, a user using the operation unit 11 and the display device 12. And a GUI control unit 23 that processes input / output between each unit of the in-vehicle system.

Here, the wireless communication device 13 may be, for example, a mobile telephone called a mobile phone, and in this case, the wireless communication device 13 is connected to the Internet 2 via the mobile telephone network.
The vehicle state sensor 14 is a set of sensors that detect various vehicle states, such as an azimuth sensor such as an angular acceleration sensor or a geomagnetic sensor, or a vehicle speed sensor such as a vehicle speed pulse sensor.
A part of the above-described in-vehicle system 1 may be configured as a CPU circuit having a general configuration including a microprocessor, a memory, and other peripheral devices in terms of hardware. In this case, Each unit configured as a CPU circuit is realized as a process realized by a microprocessor executing a program prepared in advance. In this case, such a program may be provided to the CPU circuit via a recording medium or an appropriate communication path.

Next, as shown in FIG. 2a, the map database 16 stores map data representing a map and service data.
The service data includes a facility record provided for each facility. The facility record includes a facility identifier uniquely assigned to the facility, a facility type indicating the type of restaurant, SA (service area), tourist facility, park, etc., a facility name that is the name of the facility, The facility coordinates representing the longitude and latitude coordinates, the facility address representing the facility address, the telephone number of the facility, and the facility detailed description as various information relating to other facilities are stored.

  Next, as shown in FIG. 2b, the search word table 17 has entries provided for each category of information objects such as “gourmet” and “scenery”, and each entry corresponds to each entry. A facility type related to the category and a search word used for retrieving facility information of the corresponding category are registered. The search word table 17 also includes a “common” entry that represents all categories, and a search word that is commonly used for searching facility information of each category is registered in the “common” entry. Here, as the search word, a phrase representing a positive evaluation of the object in the corresponding category is used. That is, for example, in the category “gourmet”, “delicious”, “delicious”, “exquisite”,.

Next, the SNS server 3 and the SNS client 20 of the in-vehicle system 1 will be described.
As shown in FIG. 3, the SNS server 3 includes a posted article database 31 and an SNS providing unit 32.
In the posted article database 31, each posted article posted to the SNS server 3 from a large number of SNS accounts using a mobile phone, a smartphone, a personal computer, or the SNS client of the in-vehicle system 1 is accumulated as posted article data. Yes.
Each posted article data includes a posting account that is an account that posted the posted article, the posting date and time of the posted article, and the content of the posted article.
Next, the SNS providing unit 32 includes a posting acceptance service unit 321, a registration timeline providing service unit 322, and a search result timeline providing service unit 323.
Then, the posting acceptance service unit 321 accepts a posted article posted to the SNS server 3 using an SNS client from an SNS account, and stores it in the posted article database 31 as posted article data.
In addition, the registered timeline providing service unit 322, based on the posted article data accumulated in the posted article database 31, posts a posted article posted by the account of the SNS client to each SNS client together with the posting account and the posting date and time. , Create and distribute a timeline that is a list arranged from top to bottom in chronological order from the latest posting date, and each SNS client has registered the account of the SNS client and follow-up of the account Another account generates and distributes a posted timeline, which is a list of posted articles posted together with the posting account and posting date in chronological order from the latest one.

  Then, the search result timeline providing service unit 323 receives a search request specifying a search key from the SNS client, and based on the posted article data stored in the posted article database 31, includes a phrase that matches the search key. Search the article, generate a search result timeline that lists the searched posted articles together with the posting account and posting date and time from the top in the chronological order of the posting date and time. Deliver to SNS clients. However, the posted articles included in the search result timeline may be limited to articles posted within a predetermined period in the past. Alternatively, the number of posted articles included in the search result timeline may be limited to a predetermined number.

  Now, in such a configuration, the navigation unit 19 of the in-vehicle system 1 calculates the current position by map matching processing between the output of the vehicle state sensor 14 or the GPS receiver 15 and the map data, and is stored in the map data storage unit. It also searches for and sets the guidance route to the set destination based on the map data, and cancels the guidance route setting when the destination arrives.

Further, the navigation unit 19 generates a guide image in which a graphic representing the current position, the set guidance route and the destination is drawn on the map image indicating the map represented by the map data in the map database 16, and the GUI control unit For example, a process of displaying on the display device 12 via the display 23 is performed.
FIG. 4A shows the guide image 300 displayed in this way. The guide image 300 is displayed on the map 301 as shown in FIG. 4 and the current position mark 302 indicating the current position and the destination indicating the destination. A ground mark 303 and a guide route graphic 304 representing the guide route are displayed.

Hereinafter, the recommendation information provision process which the control part 22 of the vehicle-mounted system 1 performs in such a structure is demonstrated.
FIG. 5 shows the procedure of the recommended information provision process.
As shown in the figure, in this process, the control unit 22 waits for the user's recommended information display instruction operation to occur on the operation unit 11 in a state where the guidance route is set (step 502).
Then, if an operation occurs, selection of a category of recommended information to be displayed from categories other than “common” registered in the search word table 17, an appropriate selection menu is displayed on the GUI control unit 23. Is received from the user, and the selected category is set as the target category (step 504).

  Then, referring to each facility record of the service data in the map database 16, a facility along the guidance route is set as a target facility (step 506). A facility along the guidance route is specified as a facility in a facility record in which facility coordinates within a predetermined distance to the guidance route are registered. In step 506, referring to each facility record of the service data in the map database 16, the facility type facility registered in the target category entry of the search word table 17 is located along the guidance route. Only the facility may be set as the target facility. In this case, the target facility is specified as a facility in the facility record in which the facility coordinates within the predetermined distance to the guidance route and the facility type registered in the entry of the target category in the search word table 17 are registered.

Then, the following processing is performed for each target facility (steps 508, 516, and 518).
That is, first, the logical sum of the search word registered in the “common” category entry of the search word table 17 and the search word registered in the target category entry of the search word table 17, the facility name of the target facility, and The search result timeline is acquired from the SNS server 3 by causing the SNS client 20 to issue a search request using the logical product of the search keys to the SNS server 3 via the wireless communication device 13 (step 510). More specifically, for example, the facility name of the target facility is “Iwaki SA”, the target category is “gourmet”, and is registered in the “common” entry of the search word table 17 as shown in FIG. The search words are “Recommended”, “Limited”, “Event”, and the search words registered in the “Gourmet” entry in the search word table 17 are “Gourmet”, “Delicious”, “Delicious”, “Excellent” "If you want to eat"
"Iwaki SA" and ("Recommended" or "Limited" or "Event" or "Gourmet" or "Delicious", "Delicious" or "Exquisite" or "I want to eat")
Is issued to the SNS server 3 and the above-described search result timeline is acquired from the SNS server 3.

  Next, if the search result timeline is acquired in this way, posted articles whose posted date / time is within a predetermined period in the past (for example, 1 day, 3 days, 1 week, etc.) Is extracted as a recommendation target word / phrase other than the word / phrase included in the search key and included in a predetermined number (for example, 2 or 5) of the target post article.

In other words, the minimum value of the number of posted articles that includes duplicated phrases that are extracted from the recommendation target phrase is 2, and as described above,
"Iwaki SA" and ("Recommended" or "Limited" or "Event" or "Gourmet" or "Delicious", "Delicious" or "Exquisite" or "I want to eat")
Articles whose posting date and time included in the search result timeline with the search key as the search key in the past predetermined period, that is, the target posted article,
"Iwaki SA Now soft ice cream, recommended"
"Iwaki SA limited soft serve is delicious" ...
The words that overlap the target post are “Iwaki SA” and “Soft Cream”. Among them, “Iwaki SA” is included in the search key, so only “Soft Cream” is extracted as the recommended target word. .

  However, in the extraction of the recommendation target words, words other than nouns related to the target category may not be extracted as the recommendation target words. That is, each target posted article is parsed to exclude words other than nouns from the recommended target words, or nouns related to the category corresponding to each category (for example, “soft” ”,“ Soft cream ”,“ soba ”, etc.) are provided, and nouns (eg,“ soft cream ”) included in the dictionary corresponding to the target category or included in the dictionary corresponding to the target category Other than compound nouns including nouns (for example, “peach soft”) may not be extracted as recommended target phrases.

  Now, when the recommended target phrase is extracted in this way, as shown in FIG. 4B, the map is displayed on the guide image 300 from the position on the map in the guide image 300 corresponding to the facility coordinates of the target facility. In the form of a balloon, the recommendation information 310 including the recommendation target phrase and the number of target posted articles that include the recommendation target phrase is displayed (step 514).

  Then, when the recommended information 310 is displayed for each target facility (step 514), the selection operation of the displayed recommended information by the user using the operation unit 11 (step 520) and the user's operation unit 11 are used. The occurrence of the recommended information erasing operation (step 522) is monitored.

  If the selection operation of the recommended information 310 occurs (step 520), the target among the target posted articles obtained as described above for the target facility corresponding to the selected recommended information 310 as shown in FIG. 4c. A recommended timeline 320, which is a list in which posted articles including recommended target words and phrases extracted about a facility, together with a posting account and a posting date, are arranged in chronological order from top to bottom with the latest posting date, is generated, and a guidance image 300 is generated. Displayed above (step 524).

On the other hand, when the recommended information deleting operation occurs (step 522), the display of the recommended information 310 and the recommended timeline 320 is deleted, and the display of the display device 12 is returned to the display of the guide image 300 shown in FIG. 4a. (Step 526), the process returns to Step 502.
The recommended information provision process performed by the control unit 22 has been described above.

The embodiment of the present invention has been described above.
As described above, according to the present writer, it is obtained by searching for words that express a positive evaluation using posted articles with good freshness that are posted to the SNS server 3 by an unspecified number of contributors as needed. The positive information of the target facility considered to be significant for the user of the navigation device provided can be provided as the facility information of the target facility.

  By the way, the above embodiment provides the in-vehicle system 1 with a voice output device that outputs the voice that reads out the text, and replaces the step 524 of the recommended information providing process with the process of generating and displaying the recommended timeline 320. It is good also as a process which outputs the audio | voice which read the posting article contained in a recommendation timeline.

  In the above embodiment, the processing after step 504 of the recommended information provision processing is performed when the recommended information display instruction operation of the user occurs in the state where the guidance route is set. When the route is set, the recommended information providing process after step 504 may be automatically performed.

  In the above embodiment, the recommended information for all the target facilities is displayed at the same time. However, the recommended information for each target facility is displayed when the current position approaches the target facility within a predetermined distance. May be. That is, in this case, in step 514 of the recommended information provision process, the recommended information generated for each target facility is stored in association with the corresponding target facility, and thereafter, the recommended information is stored. The target location of the target facility is monitored for its proximity to the facility coordinates. When a target facility whose current location approaches within a predetermined distance occurs, the stored recommended information related to the target facility that has been stored is displayed. As described above, the information is displayed on the guide image 300 in the form of a balloon from the position on the map in the guide image 300 corresponding to the facility coordinates of the approached target facility. In this case, the recommended information display in step 514 and the processing in steps 520 to 526 may not be performed.

  In the above embodiment, the recommended information providing process displays the recommended information of each target facility as the target facility for the facility along the guidance route, but this means that the facility around the current position is the target facility. The recommended information of the target facility is displayed, the recommended information of each target facility is displayed with the facility included in the geographical range designated on the guide image 300 from the user as the target facility, or the guide image 300 is displayed from the user. The recommended information on the target facility may be displayed with the facility specified above as the target facility.

  In the above embodiment, as shown in FIG. 4 b, the “post” button 311 is displayed for each displayed recommended information, and if the user operates the “post” button 311, the SNS client 20 is notified. 4d, a window 330 for accepting postings to the SNS server 3 may be displayed. In this case, the target facility corresponding to the recommended information 310 in which the “post” button 311 is operated for the input box 331 for accepting the input of the user's posted article provided in the post accepting window 330. The SNS client 20 may be made to automatically input the facility name (“Iwaki SA” in the figure) and the recommendation target word / phrase (“soft cream” in the figure) included in the recommendation information 310. .

  In this case, if the SNS client 20 displays the posting acceptance window 330, it accepts character input or editing in the input box 331, and if the “post” button 332 is operated, the input box at that time. The text input in 331 is posted to the SNS server 3 as a posted article.

By doing in this way, the user of the vehicle-mounted system 1 using the displayed recommended information can easily post the impression after use to the SNS server 3 so that it can be used by other users. Become.
In the above embodiment, posted articles are posted to the SNS server 3 together with the location information of the poster, and the SNS server 3 stores the posted articles in the posted article database 31 in association with the location information. In the case where the search result timeline providing service unit 323 of the SNS server 3 can perform a combined search of the posted article by the location information and the keyword, the facility coordinates are used instead of the facility name. A search may be performed.
That is, in this case, in step 510 of the recommended information provision process, the search word registered in the “common” category entry of the search word table 17 and the search word registered in the target category entry of the search word table 17 And a search request with the facility coordinates of the target facility as the search position is made to be issued to the SNS server 3 via the wireless communication device 13. In this case, the search result timeline providing service unit 323 of the SNS server 3 adds a posted article that is associated with position information that matches the search position and includes a phrase that matches the search key to the posted article database 31. The search result timeline including the searched posted article is returned to the search request issuing source SNS client 20. In addition, if the in-vehicle system acquires the search result timeline in step 512 of the recommended information provision process, the posted articles whose posted date / time is within the past predetermined period in the posted articles in the timeline are set as target posted articles. A phrase other than the phrase included in the facility name of the target facility and the search key, which is included in a predetermined number (for example, 2 or 5) of the target posted articles, is extracted as the recommended target phrase.

  DESCRIPTION OF SYMBOLS 1 ... In-vehicle system, 2 ... Internet, 3 ... SNS server, 11 ... Operation part, 12 ... Display apparatus, 13 ... Wireless communication apparatus, 14 ... Vehicle state sensor, 15 ... GPS receiver, 16 ... Map database, 17 ... Search Word table, 18 ... communication control unit, 19 ... navigation unit, 20 ... SNS client, 21 ... memory, 22 ... control unit, 23 ... GUI control unit, 31 ... posted article database, 32 ... SNS providing unit.

Claims (15)

A navigation device that provides facility information to a user,
A current position calculator for calculating the current position;
A guide image display unit for displaying a guide image representing the current position on the map;
Posting articles that have been posted by accepting postings of posts and accumulating post articles that match the search key in response to a search request accompanied by a search key are extracted from the stored post articles, and each extracted post article is extracted. A search request using a facility name of a target facility, which is a facility that provides the facility information to the user, and a word representing a positive evaluation as a search key, to an SNS (social networking service) server that returns a search result article string including A search unit that is issued through wireless communication and obtains the search result article sequence;
Calculated as a key phrase that is included in a plurality of posted articles included in the search result article sequence acquired by the search unit, excluding the phrase as the search key, and includes the calculated key phrase as the target A navigation apparatus comprising: a facility information display unit that displays the facility information of a facility in an overlapping manner at a position corresponding to the target facility of the guide image. The navigation device according to claim 1,
The facility information display unit includes the facility information to display the number of posted articles including the key phrase included in the search result article string. The navigation device according to claim 1 or 2,
The search result article string includes a plurality of posted articles, together with the posting date and time of the posted article,
The facility information display unit is configured to use the search key as a search key in which the posting date and time of the posted articles included in the search result article sequence acquired by the search unit are included in a plurality of posted articles within a predetermined past period. A navigation apparatus characterized in that a phrase excluding the word is calculated as a key phrase. The navigation device according to claim 1, 2, or 3,
A target category setting unit that receives designation of the category from a plurality of categories of the target object and sets the target category;
For each of the categories, a category table in which words and phrases representing a positive evaluation for objects in the category are registered,
The search unit sends a search request using a facility key of the target facility and a word registered in the category table for the target category set by the target category setting unit via a wireless communication. A navigation device that issues and obtains the search result article. The navigation device according to claim 1, 2, 3 or 4,
The facility information display unit displays the facility information of each target facility when the current position approaches the target facility. The navigation device according to claim 1, 2, 3, 4 or 5,
A navigation apparatus comprising: a posted article display unit that receives a selection of facility information displayed by the facility information display unit and displays a list of posted articles from which key words included in the selected facility information are extracted. The navigation device according to claim 1, 2, 3, 4 or 5,
A navigation apparatus comprising: a posted article reading unit that receives a selection of facility information displayed by the facility information display unit and outputs a voice that reads out a posted article in which a key phrase included in the selected facility information is extracted. . The navigation device according to claim 1, 2, 3, 4, 5, 6 or 7,
A target category setting unit that receives designation of the category from a plurality of categories of the target object and sets the target category;
For each of the categories, a category table in which facility types related to objects in the category are registered;
A navigation apparatus comprising: a facility selecting unit that selects a facility registered in the category table for the target category set by the target category setting unit as the target facility. The navigation device according to claim 1, 2, 3, 4, 5, 6 or 7,
A guide route setting unit for setting a guide route to the destination,
A facility selection unit that selects a facility around the guidance route as the target facility;
The navigation device, wherein the guide image display unit displays the guide image representing a guidance route together with a current position on the map. The navigation device according to claim 1, 2, 3, 4, 5, 6 or 7,
A navigation apparatus comprising: a facility selection unit that selects a facility around the current position as the target facility. The navigation device according to claim 1, 2, 3, 4, 5, 6 or 7,
A navigation apparatus, comprising: a facility selection unit that selects a facility located in an area designated on the guide image by a user as the target facility. The navigation device according to claim 1, 2, 3, 4, 5, 6 or 7,
A navigation apparatus comprising: a facility selection unit that selects a facility designated on the guide image by a user as the target facility. A navigation device according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12,
Accepts input to the input box in which the facility name of the target facility and the key word / phrase included in the facility information of the target facility are automatically input, and wirelessly transmits the text input in the input box to the SNS server as the posted article A navigation device comprising a posting unit for posting via communication. A navigation device that provides facility information to a user,
A current position calculator for calculating the current position;
A guide image display unit for displaying a guide image representing the current position on the map;
Posting posted articles together with posted coordinates representing the posted article's coordinates, and posting posted articles in correspondence with posted coordinates, and responding to search requests with search coordinates and search keywords A plurality of posted articles that match the posted coordinates that match the coordinates and that match the search keyword are extracted from the accumulated posted articles, and a search result article string that includes each extracted posted article is returned. Issuing a search request to the SNS (social networking service) server via wireless communication using the coordinates of the target facility, which is the facility that provides the facility information to the user, as search coordinates, and using a phrase indicating a positive evaluation as a search keyword. A search unit for obtaining the search result article string;
Calculated as a key phrase that is included in a plurality of posted articles included in the search result article sequence acquired by the search unit, excluding the facility name of the target facility and the phrase used as the search keyword, and calculated A navigation apparatus comprising: a facility information display unit that displays information including a key word as the facility information of the target facility in a superimposed manner at a position corresponding to the target facility of the guide image. A computer program that is read and executed by a computer,
A computer program that causes the computer to function as the navigation device according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, or 14.