JP6710051B2 - Display device, display method, and display program - Google Patents

Description

The present invention relates to a display device, a display method, and a display program for displaying a search result of information search. However, the use of the present invention is not limited to the display device, the display method, and the display program.

There is a display device that displays a search result in which a keyword matches by inputting a keyword operation. In this case, a large number of information including unnecessary information is displayed in the search result matching the keyword, and therefore the user has to perform the search operation again by inputting the narrowed keyword.

Conventionally, there has been disclosed a technique in which when a user inputs a keyword, the device searches for a keyword by adding a search keyword based on address information of the current location, activity purpose, hobby target, etc. (see, for example, Patent Document 1 below).

JP 2002-334096

In the technique of Patent Document 1, the search result desired by the user may not be obtained, and the search keyword for each search is performed in an unknown state as to whether it is valid. For example, since the device automatically adds an additional keyword as a search condition to the search keyword input by the user based on the address information of the user's current location, activity purpose, hobbies, etc., the search result that the user does not want While many are displayed, the search result desired by the user may not be obtained. In this case, since the additional keyword automatically added by the device remains in an unknown state, the user has to re-input the narrowed keyword, which is complicated, and the same search result as the additional keyword can be obtained. Problems such as the above can be cited as an example.

In order to solve the above-mentioned problems and achieve the object, a display device according to the invention of claim 1 has a receiving unit that receives an input of a first keyword by a user, and a current location and a user based on an attribute of the first keyword. A determining unit that determines any one of the designated positions that is designated as the second keyword, and when the first keyword is input as the search condition, the determination is performed together with the first keyword as a search condition different from the first keyword. Display means for displaying the displayed second keyword.

The display method according to the invention of claim 8 is, in the display method implemented by a display device, a receiving step of receiving an input of a first keyword by a user, and a current location and a user specifying the attribute based on the attribute of the first keyword. And a determination step of determining any one of the designated positions as the second keyword, and when the first keyword is input as the search condition, it is determined together with the first keyword as a search condition different from the first keyword. And a display step of displaying the second keyword.

A display program according to the invention of claim 9 causes a computer to execute the display method according to claim 8.

FIG. 1 is a block diagram showing an example of the functional configuration of the display device according to the embodiment. FIG. 2 is a flowchart showing an example of the processing procedure of the display device according to the embodiment. FIG. 3 is a block diagram showing an example of the hardware configuration of the navigation device according to the embodiment of the display device. FIG. 4 is a diagram for explaining the outline of the search processing by the navigation device according to the embodiment. FIG. 5 is a flowchart illustrating an example of search processing performed by the navigation device according to the embodiment. FIG. 6 is a diagram illustrating a processing example of an address peripheral search using an address database performed by the navigation device according to the embodiment. FIG. 7 is a diagram illustrating an example of a peripheral search using map data performed by the navigation device according to the embodiment. FIG. 8A is a diagram illustrating an offset setting example of a peripheral search using map data performed by the navigation device according to the embodiment. (Part 1) FIG. 8B is a diagram illustrating an offset setting example of a peripheral search using map data performed by the navigation device according to the embodiment. (Part 2) FIG. 9 is a diagram illustrating a processing example of an address peripheral search using the address database and map data performed by the navigation device according to the embodiment. FIG. 10 is a diagram showing another offset setting example of the peripheral search using the map data performed by the navigation device according to the embodiment.

(Embodiment)
Hereinafter, preferred embodiments of a display device, a display method, and a display program according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing an example of the functional configuration of the display device according to the embodiment. The display device 100 is movable, for example, by being carried by a user or mounted on a moving body such as a vehicle. The display device 100 includes a reception unit 101, a determination unit 102, and a display unit 103.

The receiving unit 101 receives the input of the first keyword by the user. The first keyword is a character string in which the user has entered text in the search keyword input field of the display unit of the display device 100 for the search. For example, the user inputs “convenience store” as the first keyword at the reception unit 101 such as a keyboard when searching for facilities at a convenience store, and the display device 100 displays a list of search results, for example, “○○ convenience store”. Display as a search result in the department.

The determination unit 102 determines the second keyword based on the current location of the display device 100 or the position designated by the user. The second keyword is generated by the determination unit 102 of the display device 100, rather than being input by the user. The second keyword is another search condition that is not directly related to the first keyword (text character string) input by the user, and corresponds to a search keyword that narrows down the first keyword.

The determination unit 102 can be configured to include, for example, a geocoder. Geocoders convert between address information and location information. The geocoder outputs position information (latitude/longitude) by inputting address information. At this time, the geocoder searches an address database that stores address information (prefectures, counties, cities, towns and villages) and position information (latitude/longitude) in association with each other, and outputs position information corresponding to the address information. As described below, in the embodiment, the geocoder outputs the address information corresponding to the position information by reverse (function).

The determination unit 102 determines the address information output by the geocoder as the second keyword based on the position information of the current location of the display device 100. Here, the determination unit 102 determines all or part of the address information output by the geocoder as the second keyword. As will be described later, when using the geocoder, the determination unit 102 has an address peripheral search function that refers to an address database and searches for address information around a predetermined position (address). The address database has a hierarchical structure for each division (level) of “prefecture, county, city, town, and village address”, and it is possible to perform a search for a predetermined level (for example, “prefecture, county, city, and ward”). ing.

When the user inputs the first keyword as the search condition, the display unit 103 displays the second keyword, which is a search condition different from the first keyword, together with the first keyword in the search keyword input field of the display screen.

For example, in the above example, when the user operates and inputs “convenience store” as the first keyword, the determination unit 102 sets “Kawasaki city×ward” as the second as a part of the address information corresponding to the current location of the display device 100. Decide on a keyword. Then, the display unit 103 displays “convenience store Kawasaki City×ward” in the search keyword input field.

The determination unit 102 can determine the address information corresponding to the position information (designated position) designated by the user as the second keyword, not limited to the current location. When the user specifies, the determining unit 102 determines the address information output by the geocoder as the second keyword based on the position information specified by the user.

The determination unit 102 may acquire position information of a destination or a waypoint (a stopover in the middle of the destination) from an external device of the display device 100. For example, it is assumed that the user specifies the position of the destination on the information search device in order to perform a search operation for the destination such as a facility to which the user is going. In this case, the determination unit 102 can acquire the position information of the operation-specified destination and input it to the geocoder, and the user can save the time and effort of text-inputting the address information of the destination for the search. .. Further, the narrowing-down condition can be given to the keyword without knowing the address information at the destination. In this way, the display device 100 can acquire, as the position information for determining the second keyword, the position information when the user performs the information search or the like from the external device.

Further, the determination unit 102 may determine the second keyword not only in the external device of the display device 100 but also in the history held inside the device. For example, by retaining the past history of using the second keyword related to the operation input of the first keyword by the user, the frequency of selection in the past history when the user inputs the first keyword The second keyword (address information) having a high value can be determined as the second keyword. Further, by determining the display priority of the second keyword candidate by combining the past history and the current location, or by combining the past history and the designated position for which information retrieval such as the destination is performed. You can also

Then, the display unit 103 displays “convenience store Kawasaki City×ward” consisting of the first keyword and the second keyword as a search keyword in the search keyword input field.

After that, the display device 100 can perform a search based on the search keyword “convenience store Kawasaki City×ward” displayed in the search keyword input field and display and output a predetermined search result.

The second keyword is a search condition different from the first keyword, but is a keyword effective for narrowing down a large number of search results with only the first keyword. As described above, by using the second keyword as the address information based on the current location of the display device 100 owned by the user (or the user's position designation), the first keyword is narrowed down by the address information around the current location of the user. Therefore, the search result desired by the user can be displayed in the higher rank.

For the second keyword, for example, a position having a high movement frequency (positional information of a predetermined facility or address information) is stored based on the past moving position of the display device 100, and the past moving position is set as the second keyword. Can also be generated automatically. In this case, the address information of the position where the moving frequency is high is displayed in the search keyword input field, and the user can confirm and execute the search.

In addition, when the address around the current location is used as the second keyword, the determination unit 102 may have an address peripheral search function of searching for an address around the current address using the hierarchical structure of the address database. .. In the address peripheral search processing, based on the address data of the lowest layer including up to the "address" acquired as the current location, the information up to the upper level "City, Town" is extracted, The address data of the next lower hierarchy “city, town, village, town, village” including information is searched and used as the second keyword.

An example of peripheral search for this address will be described. For example, when the address data of the lowermost layer including up to the “address” acquired as the current location is “1 Shinkokura, Saiwai-ku, Kawasaki-shi, Kanagawa”, the determination unit 102 refers to the address database and moves up one level “city”. Information "Kawasaki City, Kanagawa Prefecture" (parent level) up to "ward municipalities" is extracted. After that, the determination unit 102 searches the address data of the next lower hierarchy “City, Town, and Village” including the information of “City, Town, and Village” to find a plurality of wards (for example, “Kawasaki City, Kanagawa Prefecture”). The second keyword is "Kawasaki City, Kawasaki City, Kanagawa Prefecture," "Kawasaki City, Kawasaki City, Kanagawa Prefecture, and other 6 wards." As a result, a plurality of wards (in the same hierarchy (sibling hierarchy) of the address database) around "Kawasaki-shi, Kawasaki, Kanagawa" at the current location can be determined as the second keyword candidates.

The determination unit 102 may display all the second keyword candidates and may be selected by the user. In addition, the second keyword can be automatically selected from the second keyword candidates.

Regarding the automatic selection of the second keyword candidates, for example, when the address of the present location is “Shin-Ogura, Saiwai-ku, Kawasaki-shi, Kanagawa”, it is determined based on the number of search results when searching in each hierarchy. When the first keyword is “convenience store”, it is assumed that “convenience store+Kawasaki city”=100 cases, “convenience store+sachi ward”=40 cases, and “convenience store+Kawasaki ward”=1 cases. In this case, the determination unit 102 compares the result with a predetermined threshold value (for example, 10 or more and less than 100) corresponding to the number of search results, and determines “sachiku-ku” as the second keyword. However, in the case of “ward” units, similar “ward” may exist in other municipalities, so the search is performed in combination with the keyword of “city”.

In addition, when there are second keyword candidates of the current location, destination, transit point, and departure point as the second keyword, the determination unit 102 determines the current location, destination point, transit point, and departure point based on the attributes of the first keyword. It may be decided which of the two is to be displayed with priority. For example, when the first keyword is “parking lot” and “convenience store”, the user determines that the search is immediately necessary around the current location, and the second keyword candidate of “current location” is preferentially displayed. When the first keyword is “lunch”, “dinner”, “sightseeing”, etc., it is determined that the search is performed by the user and the second keyword candidate of “destination” is preferentially displayed.

The display unit 103 may change and display the display mode (color, font, etc.) for each of the current location, the destination, the waypoint, and the departure location as a display example when there are a plurality of second keyword candidates. Further, the display priority may be changed according to the present location, the destination, the waypoint, and the like.

FIG. 2 is a flowchart showing an example of the processing procedure of the display device according to the embodiment. A processing example at the time of search by the display device 100 will be described. First, the display device 100 displays a search keyword input field for a search process by the user on the display unit. Then, the display device 100 receives the input of the text input character string (first keyword) for the search by the user operation (step S201).

Next, the display device 100 determines the second keyword based on the current position of the device itself or the position specified by the user (step S202). The display device 100 obtains the address information of the current position by inputting the current position (latitude/longitude) of its own device to the geocoder, and determines this address information as the second keyword. At this time, as described above, it is possible to obtain address information around the present location of the own device. Further, the present invention is not limited to the present location of the own device, and may be configured to obtain address information around the position arbitrarily designated by the user.

After that, the display device 100 displays the first keyword and the second keyword in the search keyword input field (step S203). The first keyword input by the user is an operation input by the user for search, but the second keyword is not directly related to the first keyword and is displayed based on the current position (or the position specified by the user). The address information is generated by the device 100.

The user sees the display of the first keyword and the second keyword displayed in the search keyword input field of the display device 100, and starts the search by the displayed search keyword (step S204). In the search keyword input field, in addition to the first keyword input by the user, the address information of the present location (or the user's designation) is displayed. When the search is executed in this state, the first keyword which is the search desired by the user is displayed. The search can be narrowed down by the address information of the current location (specified by the user) indicated by the second keyword.

According to the above-described embodiment, the display device displays the search keyword including the first keyword and the second keyword in the search keyword input field at a stage before executing the search process. The user can perform a search after visually confirming the display of the second keyword automatically generated by the display device.

As a result, the user can execute the search while knowing what the search keyword is. As a result, the display device can display the search results narrowed down by the user's current location or the user-specified address information without the user's operation input, and the user can select the desired search result from the list of search results displayed in large numbers. It is possible to present the user with the results narrowed down to those close to the search result.

Then, the user simply inputs the first keyword by text input or the like, and the display device automatically inputs the second keyword different from the first keyword and displays it as the search keyword. As a result, the search result expected by the user can be displayed by the input operation saving, and the effective narrowing condition is set as the narrowing condition without knowing the address information. Further, since the search result expected by the user is displayed, when the search result is not expected in the search process, the user has to input the search keyword for narrowing down the search result again after displaying the search result. You will be able to save time.

Then, the second keyword automatically generated by the display device can be displayed as one of the keyword candidates in the search keyword input field. For example, the display device can reversely display the automatically generated second keyword as one of the plurality of candidates after the fixed input state of the first keyword by the user operation. At this time, when the user performs the search using the second keyword, it is only necessary to perform the operation of changing the reverse display to the confirmed display. Thereby, the user can easily select whether or not to perform the narrowing down using the second keyword.

If the user determines that the second keyword is not appropriate, the user may delete the second keyword in the search keyword input field. In this way, the user can actually perform a search after actually looking at the display of the search keyword input field to find out what the search keyword is.

For example, when the user carries the display device, when the user inputs an arbitrary search keyword (first keyword) desired by the user into the display device, the display device narrows down the first keyword around the user's current location. Present to the user. As a result, the display device automatically generates the narrowed-down search keyword without the user having to input the narrowed-down second keyword, so that it is possible to perform the search based on the appropriate search keyword without the user's operation. In addition, the user can perform the search while determining the validity of the search keyword including the automatically generated second keyword.

In the above description, the configuration in which the search keyword is displayed in characters in the search keyword input field on the display unit has been described, but the search keyword (text data) and the search result may be output as voice. Further, a search keyword may be input by voice in the search keyword input field by using a function of converting the voice of the user into text by voice recognition.

Next, examples of the present invention will be described. In the embodiment, an example will be described in which the navigation device 300 is installed in the vehicle and the navigation device 300 executes the functions of the display device 100 described above.

(Hardware Configuration of Navigation Device 300)
FIG. 3 is a block diagram showing an example of the hardware configuration of the navigation device according to the embodiment of the display device. In FIG. 3, the navigation device 300 includes a CPU 301, a ROM 302, a RAM 303, a magnetic disk drive 304, a magnetic disk 305, an optical disk drive 306, an optical disk 307, an audio I/F (interface) 308, a microphone 309, a speaker 310, an input device 311, and An image I/F 312, a display 313, a communication I/F 314, a GPS unit 315, various sensors 316, and a camera 317 are provided. The constituent units 301 to 317 are connected to each other by a bus 320.

The CPU 301 controls the entire navigation device 300. The ROM 302 stores various programs including a boot program and a display program. The RAM 303 is used as a work area for the CPU 301. That is, the CPU 301 controls the entire navigation device 300 by executing various programs recorded in the ROM 302 while using the RAM 303 as a work area.

The magnetic disk drive 304 controls the reading/writing of the data with respect to the magnetic disk 305 according to control of CPU301. The magnetic disk 305 records the data written under the control of the magnetic disk drive 304. As the magnetic disk 305, for example, HD (hard disk) or FD (flexible disk) can be used.

Further, the optical disc drive 306 controls the reading/writing of data with respect to the optical disc 307 under the control of the CPU 301. The optical disk 307 is a removable recording medium from which data is read out under the control of the optical disk drive 306. The optical disc 307 can also use a writable recording medium. As the removable recording medium, an optical disk 307, an MO, a memory card, or the like can be used.

Examples of information recorded on the magnetic disk 305 and the optical disk 307 include map data, vehicle information, road information, travel history, and the like. Map data is used when searching for routes in a car navigation system, and is background data that represents features such as buildings, rivers, the ground surface, energy supply facilities, and road shapes that represent road shapes with links and nodes. It is vector data including data.

The audio I/F 308 is connected to the microphone 309 for audio input and the speaker 310 for audio output. The voice received by the microphone 309 is A/D converted in the voice I/F 308. The microphone 309 is installed in, for example, a dashboard part of a vehicle, and the number thereof may be one or more. From the speaker 310, a sound obtained by D/A converting a predetermined sound signal in the sound I/F 308 is output.

Examples of the input device 311 include a remote controller having a plurality of keys for inputting characters, numerical values, various instructions, a keyboard, a touch panel, and the like. The input device 311 may be realized by any one form of a remote controller, a keyboard, and a touch panel, but may be realized by a plurality of forms.

The video I/F 312 is connected to the display 313. Specifically, the video I/F 312 is output from, for example, a graphic controller that controls the entire display 313, a buffer memory such as a VRAM (Video RAM) that temporarily records image information that can be immediately displayed, and a graphic controller. It is configured by a control IC or the like that controls the display 313 based on the image data to be displayed.

The display 313 displays various data such as icons, cursors, menus, windows, and characters and images. As the display 313, for example, a TFT liquid crystal display, an organic EL display or the like can be used.

The camera 317 captures an image including a road outside the vehicle. The image may be either a still image or a moving image. For example, the outside of the vehicle is photographed by the camera 317, the photographed image is analyzed by the CPU 301, or the recording medium such as the magnetic disk 305 or the optical disk 307 is transmitted via the image I/F 312. Or output to.

The communication I/F 314 is wirelessly connected to the network and functions as an interface between the navigation device 300 and the CPU 301. Communication networks that function as networks include in-vehicle communication networks such as CAN and LIN (Local Interconnect Network), public line networks, mobile phone networks, DSRC (Dedicated Short Range Communication), LAN, WAN, and the like. The communication I/F 314 is, for example, a public line connection module, an ETC (nonstop automatic fee payment system, registered trademark) unit, an FM tuner, a VICS (Vehicle Information and Communication System: registered trademark)/beacon receiver, or the like.

The GPS unit 315 receives radio waves from GPS satellites and outputs information indicating the current location of the vehicle. The output information of the GPS unit 315 is used together with the output values of various sensors 316 described later when the CPU 301 calculates the current position of the vehicle. The information indicating the current location is information specifying one point on the map data, such as latitude/longitude and altitude.

The various sensors 316 output information such as a vehicle speed sensor, an acceleration sensor, an angular velocity sensor, and an inclination sensor for determining the position and behavior of the vehicle. The output values of the various sensors 316 are used by the CPU 301 to calculate the current position of the vehicle and the amount of change in speed and direction.

Using the programs and data recorded in the ROM 302, the RAM 303, the magnetic disk 305, the optical disk 307, and the like illustrated in FIG. 3, the CPU 301 executes a predetermined program to receive the acceptance unit 101 to 101 of the display device 100 illustrated in FIG. The function of the display unit 103 is realized.

(Outline of second keyword generation)
FIG. 4 is a diagram for explaining the outline of the search processing by the navigation device according to the embodiment. FIG. 4 is a configuration example of the determination unit 102 in FIG. 1, and the function of the geocoder 410 can also be obtained by executing the program of the CPU 301.

The navigation device 300 displays the search keyword input field 400 on the display 313 during the search. The user operates and inputs a desired search keyword (first keyword “XXX” KW1) in the search keyword input field 400.

At the time of this search, the geocoder 410 of the navigation device 300 acquires the current location (latitude/longitude) of the navigation device 300 from the GPS unit 315 and outputs the address information corresponding to the latitude/longitude as the second keyword. As a result, the navigation device 300 displays the first keyword “XXX” KW1 and the second keyword “□○” KW2 as the search keywords KW on the search keyword input field 400.

By displaying one character space between the first keyword KW1 and the second keyword KW2, it becomes easy to visually distinguish the first keyword KW1 and the second keyword KW2. Further, since the second keyword KW2 is not an operation input by the user but is automatically generated by the navigation device 300, the input may be in an unconfirmed state by displaying it in reverse video. The user may look at the text characters of the second keyword KW2 and perform a confirmation operation when using the text characters for the search.

Then, the navigation device 300 performs a search process based on the search keyword KW (first keyword KW1 and second keyword KW2) displayed in the search keyword input field 400 by a user operation, and displays the search result list 420. Display on 313.

(Example of search processing)
FIG. 5 is a flowchart illustrating an example of search processing performed by the navigation device according to the embodiment. An outline of processing executed by the CPU 301 (display unit 103 in FIG. 1) of the navigation device 300 will be described.

At the time of search, the navigation device 300 displays the search keyword input field 400 on the display 313 and accepts the operation input of the desired search keyword (first keyword) by the user (step S501).

When the user inputs the first keyword, the navigation device 300 acquires the current position (latitude/longitude) of its own device from the GPS unit 315 and inputs it to the geocoder 410 (step S502). The geocoder 410 outputs address information (second keyword) corresponding to the current location (step S503).

After that, the navigation device 300 determines whether or not the destination or the waypoint is set (step S504). If the destination of the moving body or a waypoint in the middle of the destination is set (step S504: Yes), position information (latitude/longitude) of the set destination or waypoint is input to the geocoder 410 (step S502). At this time, the navigation device 300 (geocoder 410) outputs address information (second keyword) corresponding to the set destination or waypoint (step S503).

According to the above processing, the navigation device 300 (geocoder 410) outputs the address information of the current location as the second keyword. Further, if the destination or the waypoint is set, the address information of the destination or the waypoint is also output as the second keyword in addition to the address information of the current position of the navigation device 300 (geocoder 410).

Further, in step S504, if the destination of the moving body or the waypoint in the middle of the destination is not set (step S504: No), the navigation device 300 proceeds to step S505. In addition, in step S503, when the address information of the destination or the stopover is output in addition to the current location, the navigation device 300 moves to step S505.

After that, in step S505, the navigation device 300 displays the search keyword candidates in the search keyword input field 400 (step S505). The search keyword includes a first keyword and a second keyword. Since the second keyword is the address information of only the current location, or the current location, the destination and the transit point, it may be one or a plurality of different address information, and corresponding to this, there may be a plurality of candidates as the search keyword.

When there are a plurality of search keywords, for example, the display order of the current location is given the highest priority for the second keyword in the predetermined sort order, and the following is displayed as the waypoint and the destination according to the priority order. In addition, the priority of the display of the destination may be set to be the highest or the priority of the waypoint may be set to be the highest based on the user setting in advance. At this time, as described above, it is possible to display a plurality of candidates in the undetermined state of the second keyword and to confirm and display the second keyword determined from the candidates. At this time, a plurality of candidate lists can be scrolled by moving the cursor, and the confirmation display can be performed by operating the space key or the kana conversion key, for example.

Then, the navigation device 300 determines the search keyword to be displayed in the search keyword input field 400 by determining the second keyword by the user operation (step S506). Thereafter, the navigation device 300 executes a search process using the search keyword displayed in the search keyword input field 400 by the user's selection operation of a search start button or the like (step S507), and returns the search result to the user. Present.

(Processing example 1 of address neighborhood search)
FIG. 6 is a diagram illustrating a processing example of an address peripheral search using an address database performed by the navigation device according to the embodiment. This is an example of processing performed by the CPU 301 of the navigation device 300 (the function of the determination unit 102 of FIG. 1, the function of using the geocoder 410 of FIG. 4), for example, the processing of outputting address information around the current location based on position information of the current location. Here is an example:

First, when the position information of the current position (for example, latitude/longitude “E139.40.35.6N35.33.24.0”) is input to the geocoder 410 (step S601), the geocoder 410 causes the address corresponding to the position information of the current position. The information "1 Shinkokura, Saiwai-ku, Kawasaki-shi, Kanagawa" is output (step S602). Here, the CPU 301 extracts the address information on the first layer “Sachi-ku, Kawasaki-shi, Kanagawa” from the address information output by the geocoder 410, and determines it as the second keyword candidate KW2-1.

Next, the CPU 301 extracts the address information "Kanagawa Prefecture Kawasaki City" that is one level higher than the address information "Kanagawa Prefecture Kawasaki City Sachi-ku" obtained in step S602 (city/country/town/village extraction) (step S603). , Second keyword candidate KW2-2 is determined.

Next, the CPU 301 searches the address database 610 for and extracts the address information “Kawasaki-shi, Kanagawa XX”, which is one hierarchy below the address information “Kawasaki-shi, Kanagawa” obtained in step S603 (step S604). Two keyword candidates KW2-3 are determined. The second keyword candidate KW2-3 obtained in step S604 is address information of the same layer (sibling layer) as the second keyword candidate KW2-1 obtained in step S602.

After that, the CPU 301 determines the plurality of second keyword candidates KW2-1 to KW2-3 as the second keyword KW2. After that, the CPU 301 displays the search keyword KW including the first keyword KW1 and the second keyword KW2 in the search keyword input field 400. Then, the CPU 301 executes a search process using the search keyword KW by a user operation.

Here, if the search keyword input field 400 has a configuration in which a plurality of lines of text strings can be displayed, the CPU 301 displays a plurality of second keyword candidates KW2-1 to KW2-3 in the search keyword input field 400. ..

However, as shown in FIG. 6, in the case where the search keyword input field 400 is configured to display a single character string of text, the CPU 301 selects one of the plurality of second keyword candidates KW2-1 to KW2-3. Only one (for example, one with the highest priority) is displayed in the search keyword input field 400. However, it is displayed that a plurality of second keyword candidates KW2-1 to KW2-3 are included (for example, the number of candidates).

In addition, the CPU 301 may display one of a plurality of second keyword candidates KW2-1 to KW2-3 or only a predetermined number as the second keyword KW2 so that the user can select it. At this time, the CPU 301 gives a predetermined priority to the plurality of second keyword candidates KW2-1 to KW2-3, and one second keyword candidate KW2 having a high priority (for example, the second keyword candidate KW2 indicating the current location). Only -1) may be set to be displayed in the search keyword input field 400. Regarding the remaining second keyword candidates KW2-2 and KW2-3, user selection is made possible by pull-down display or the like.

As for the display priority of the second keyword candidates KW2-1 to KW2-3, for example, the display priority of the current location is set to be the highest, and the priority is displayed in the order of decreasing distance from the current location or priority set in advance by the user. Based on the ranking or the like, the route may be displayed in the order closer to the current position on the route (guide route) to the destination or waypoint set in the navigation.

In the above description, the peripheral search of the address of the present location has been described as an example, but the peripheral search of the addresses of these destinations and transit points can be similarly performed for other destinations and transit points.

Then, one of the plurality of second keyword candidates KW2-1 to KW2-3 obtained by the peripheral search of the address is determined as the second keyword KW2 by the user's selection, and the search keyword KW as the search keyword KW together with the first keyword KW1. It is displayed in the input field 400. Then, as described above, the search based on the search keyword KW displayed in the search keyword input field 400 can be executed.

(Processing example 2 of address neighborhood search)
FIG. 7 is a diagram illustrating an example of a peripheral search using map data performed by the navigation device according to the embodiment. In this processing example, an example in which the address of the current location is acquired using map information (map data in which the latitude and longitude are in the XY axis directions) will be described.

As shown in FIG. 7, the navigation device 300 acquires position information (latitude/longitude) P of the current location on the map data 700. Then, the latitude/longitude of four positions apart from each other in all directions (four directions of north, south, east and west along the XY axis in the illustrated example) by a predetermined distance (offset amount) L centering on the current position P on the map data 700. Get an address.

In the example of FIG. 7, the address of the current location P is “Shinkokura, Kawasaki City, Kanagawa Prefecture”. A position On in the north direction, which is apart from the current position P by a distance (offset) L, is “Kashimada, Saiwai-ku, Kawasaki-shi, Kanagawa Prefecture”, and a position Oe in the east direction, which is separated by the distance L, is “Kawasaki-shi, Kanagawa Prefecture. The position Ow in the west direction, which is "Furukawa-cho, Sachi-ku," is a "Minamikase, Sachi-ku, Kawasaki-shi, Kanagawa". Further, the position Os in the south direction separated by the distance L is “Egasaki-cho, Tsurumi-ku, Yokohama-shi, Kanagawa”.

In this way, on the map data 700, the addresses around the current position P can be acquired by acquiring the addresses of the positions On, Oe, Ow, and Os that are offset (distance) L from the current position P as a center. More specifically, the position information (latitude/longitude) of each position On, Oe, Ow, Os on the map data 700 is acquired and input to the geocoder 410, and the address information output by the geocoder 410 is used.

In the example shown in FIG. 7, the current location P and the addresses of the respective positions On, Oe, and Ow are all “Kawasaki City Sachi Ward”, but the address of the position Os is “Tsurumi Ward, Yokohama City”, which is different from the others. However, by using the offset on the map data 700, it is possible to easily obtain the address information around the current position P.

FIG. 8A and FIG. 8B are diagrams illustrating an offset setting example of the peripheral search using the map data performed by the navigation device according to the embodiment. As shown in FIG. 8A, when the density of the administrative division (thick line in the figure) when displaying the map data 700 of a predetermined scale is rough, the offsets of the respective positions On, Oe, Ow, Os centering on the current position P (Distance) L1 is set relatively large. For example, it is assumed that any one of the positions On, Oe, Ow, and Os is an offset (distance) L1 that is located in another administrative district beyond the administrative division. In the example of FIG. 8A, two positions Os and Ow are located in the administrative district different from the current location P.

On the other hand, as shown in FIG. 8B, when the density of the administrative division (thick line in the figure) is high when the map data 700 of a predetermined scale is displayed, each position On, Oe, Ow, Os with the current position P as the center is displayed. The offset (distance) L2 of is set relatively small. For example, an offset (distance) L2 with respect to the current position P is such that all the positions On, Oe, Ow, Os are not located in different administrative districts. In the example of FIG. 8B, the two positions On and Ow are located in the administrative district different from the current location P.

As shown in FIG. 8A and FIG. 8B, by changing the offset (distance) L from the current position P according to the administrative division on the map data 700 and performing the surrounding search, one of the address information of the current position P is indicated. You will be able to obtain addresses not only in the administrative districts but also in other neighboring administrative districts.

(Processing example 3 of address neighborhood search)
FIG. 9 is a diagram illustrating a processing example of an address peripheral search using the address database and map data performed by the navigation device according to the embodiment. The determination unit 102 in FIG. 1 includes a geocoder 410 and a keyword combination unit 901. The CPU 301 shown in FIG. 3 executes the functions of the geocoder 410 and the keyword combination unit 901 as a program.

The first keyword KW1 “convenience store” is obtained by the operation input of the user. The keyword combination unit 901 obtains the second keyword KW2 by combining the result using the address database 610 described above (see FIG. 6) and the result using the map data 700 (see FIG. 7).

The keyword combination unit 901 uses the above-mentioned address database 610 to indicate the second keyword candidate “Kawasaki City Sachi Ward” KW2-1, the second keyword candidate “Kawasaki City” KW2-2, and the second keyword. Candidate "Kawasaki-shi Kawasaki-ku and other 6 wards" KW2-3.

Further, the combination unit 901 obtains the second keyword candidate “Tsurumi-ku, Yokohama-shi” KW2-A using the map data 700 described above. Note that this “Tsurumi Ward, Yokohama City” is not included in the second keyword candidates KW2-1 to KW2-3 using the address database 610 (see FIG. 6). As described above, by obtaining the second keyword candidates KW2-1 to KW2-3 based on the address database 610 and the second keyword candidates KW2-A based on the map data 700, respectively, one of the address database 610 and the map database 700 can be obtained. It becomes possible to obtain the second keyword candidate KW2-A which cannot be obtained only by itself. As a result, it becomes possible to determine a plurality of second keyword candidates for the search around the current location P.

In this processing example as well, as described above, all or some of the plurality of second keyword candidates KW2-1 to KW2-3, KW2-A are assigned according to the number of lines displayed in the search keyword input field 400 according to the priority order. It can be sorted and displayed.

FIG. 10 is a diagram showing another offset setting example of the peripheral search using the map data performed by the navigation device according to the embodiment. The second keyword KW2 is a keyword for narrowing down the search results by the first keyword KW1. Therefore, there may be a plurality of distances (offsets) L in each direction (N, E, W, S) in the north, south, east, and west with the current position P as the center.

In the example of FIG. 10, two distances (offsets) L1 and L2 are set in each direction. For example, in the north direction, there are a position On1 at a distance L1 and a position On2 at a distance L2. As a result, two pieces of position information (latitude/longitude) are input to the geocoder 410 for each direction, and correspondingly, the geocoder 410 outputs two pieces of address information for each direction.

As a result, different address information is output for each direction, and, for example, at the location On1 of the distance L1 in the north direction and the location On2 of the distance L2, the address information of different administrative districts (for example, different districts) is obtained. There may be cases where In such a case, a new candidate can be obtained as the second keyword candidate KW2, and the candidates for the narrowing-down condition (second keyword candidate KW2) can be increased. Not limited to the above example, two or more distances (offsets) L1, L2, L3 may be set in each direction, and the number of candidates for the narrowing condition (second keyword candidate KW2) can be increased.

Further, the direction in which the offset L is set may be set based on the current moving direction of the moving body. For example, when the moving direction of the moving body is north, the navigation device 300 sets the offset L in each of the three directions of northeast and west (N, E, W) excluding south. As a result, it becomes possible to narrow down the address information corresponding to the moving direction of the moving object as the second keyword and obtain a search result corresponding to the moving direction of the moving object.

Furthermore, the number of offsets L set for each direction may be set based on the current moving direction of the moving body. For example, when the moving direction of the moving body is north, the navigation device 300 does not set the offset L in the south (S) direction opposite to the traveling direction, or sets it with a single distance L1. Then, for the three directions of northeast and west (N, E, W), a plurality of offsets L1 and L2 are set for each direction. This makes it possible to increase the number of second keyword candidates corresponding to the moving direction of the moving body.

(Example of display processing by the server)
In the above-described embodiment, the navigation device 300 is configured to execute the search process, but the same search process as above can be performed using the navigation device 300 or a simple display device (for example, a smartphone or a server communication type navigation device). I can do it. In this case, the display device has the function of the accepting unit 101 illustrated in FIG. 1, and the server has the functions of the determining unit 102 and the display unit 103.

The display device may have a function such as GPS capable of detecting the current position, a communication unit that communicates with a server via a network such as the Internet, an input unit, a display unit, and the like. 1 keyword and send to the server. The server generates a second keyword based on the position information of the current location of the display device, and transmits the second keyword to the display device. Then, the display device displays the search keyword including the first keyword and the second keyword in the search keyword input field 400 of the display unit.

Then, the display device or the server executes the search process by the user operation for the search keyword displayed in the search keyword input field 400. During the search process, the display device may be configured to access a predetermined search server via the communication unit to obtain the search result.

Thus, even in the case of the system configuration including the display device and the server, the user can obtain a desired search result by a simple operation, as in the above embodiment.

According to the embodiment described above, the navigation device automatically generates the second keyword based on the current position (destination, waypoint, etc.) of the moving body, and displays the second keyword in the search keyword input field together with the first keyword operated and input by the user. indicate. As a result, the user can execute the search after visually confirming the display of the second keyword displayed in the search keyword input field, and can narrow down the search results based on the first keyword by the address information of the current location, At this time, the user does not need to input the operation of the second keyword, and the search result expected by the user can be obtained from a large number of search results.

In addition, since the position of the current location constantly changes based on the movement of the moving body, the user often does not know the information (position and address) of the current location during the movement. In this way, even if the user does not know the address of the current location (destination, waypoint), etc., the navigation device automatically generates the second keyword, so that the search result expected by the user can be easily obtained. Like

Further, regarding the second keyword automatically generated by the display device, by displaying a plurality of second keyword candidates by searching the neighborhood of the address, the second keyword can be selected by the user. By allowing the user to select the second keyword, it is possible to more accurately present the search result expected by the user.

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

100 display device 101 reception unit 102 determination unit 103 display unit 300 navigation device 301 CPU
302 ROM
303 RAM
KW Search keyword KW1 1st keyword KW2 2nd keyword

Claims (9)

Accepting means for accepting input of the first keyword by the user,
Based on the attribute of the first keyword, determining means for determining one of the specified positions current position and the user has designated as the second keyword,
Display means for displaying the determined second keyword together with the first keyword as a search condition different from the first keyword when the first keyword is input as the search condition;
A display device having: The display device according to claim 1, wherein the determination unit determines the second keyword based on a current position of the device itself or a name of a part of an address of the designated position. Of the address names, the deciding means decides, based on the number of search results when a plurality of hierarchies of the address names are respectively decided as the second keywords, the second part of the address. The display device according to claim 2, wherein the hierarchy of the address as a keyword is determined. The determining means accesses an address database that holds address information in a hierarchical manner, extracts address information around the address of the current location or the designated position, and selects the current location or the designated position and the current location or the designated position. The display device according to claim 1, wherein peripheral address information is determined as the second keyword. The determining unit displays the second keyword as a second keyword candidate when there are a plurality of the second keywords, and determines the second keyword based on user selection, as the second keyword. Display device. The determining means has a geocoder for converting between position information and address information,
The position information of the current position of the device itself is input to the geocoder to obtain an output of address information corresponding to the current position, and the second keyword is determined based on the address information. 5. The display device according to any one of 5. The display unit changes the display mode of the second keyword according to whether the second keyword is based on a destination or a current location. of the display device. In the display method carried out by the display device,
A receiving step of receiving the input of the first keyword by the user,
A determination step of determining, as the second keyword, either the current location or a designated position designated by the user based on the attribute of the first keyword;
A display step of displaying the determined second keyword together with the first keyword as a search condition different from the first keyword when the first keyword is input as the search condition;
A display method comprising: A display program that causes a computer to execute the display method according to claim 8.

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