JP2017130058A - Display device, display method, and display program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a search result desired by a user through a simple user operation.SOLUTION: A display device 100 includes: a receiving unit 101 for receiving a first keyword input by a user; a determination unit 102 for determining a second keyword based on a current location or a designated location; and a display unit 103 which displays the determined second keyword, together with the first keyword input as a search condition, as another search condition which is different from the first keyword when the first keyword is input as the search condition. The determination unit 102 determines a second keyword, on the basis of a current location of the device or a name of a part of an address of a location designated by the user.SELECTED DRAWING: Figure 1

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 that matches a keyword by an operation input of the keyword. In this case, a large number of information including unnecessary information is displayed in the search result matching the keyword, and the user has to input the further refined keyword and search again.

  2. Description of the Related Art Conventionally, a technique has been disclosed in which when a user inputs a keyword, the apparatus searches for a keyword by adding a search keyword based on address information of the current location, an activity purpose / hobby target, and the like (for example, see Patent Document 1 below).

JP 2002-334096 A

  In the technique of the above-mentioned Patent Document 1, a search result desired by the user may not be obtained, and the search keyword for each search is valid or unknown. For example, since the device automatically performs search by adding an additional keyword to the search keyword input by the user as a search condition based on the address information of the user's current location, the purpose of activity, hobbies, etc., the search result not desired by the user 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 input again the keyword to be narrowed down, which is complicated, and the same search result as the additional keyword is obtained. Such problems are given as an example.

  In order to solve the above-described problems and achieve the object, a display device according to a first aspect of the present invention includes a receiving unit that receives input of a first keyword by a user, and a second keyword based on a current location or a specified position. Determining means for determining, and 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 a search condition; It is characterized by having.

  According to a ninth aspect of the present invention, in the display method implemented by the display device, a receiving step for accepting input of the first keyword by the user and a second keyword based on the current location or the designated position are determined. A determination step and 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 a search condition. It is characterized by including.

  A display program according to a tenth aspect of the invention causes a computer to execute the display method according to the ninth aspect.

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

(Embodiment)
Exemplary embodiments of a display device, a display method, and a display program according to the present invention are explained in detail below with reference to the accompanying drawings.

  FIG. 1 is a block diagram illustrating an example of a functional configuration of the display device according to the embodiment. For example, the display device 100 is movable 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 accepting unit 101 accepts input of the first keyword by the user. The first keyword is a character string that the user has entered in the search keyword input field of the display unit of the display device 100 for searching. For example, when a user searches for a facility in a convenience store, the display device 100 displays a search result, for example, a list of “XX convenience stores” by inputting “convenience store” as the first keyword in the reception unit 101 such as a keyboard. Displayed as search results.

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

  The determination unit 102 can be configured with a geocoder, for example. The geocoder converts between address information and location information. The geocoder outputs position information (latitude and longitude) by inputting address information. At this time, the geocoder searches an address database storing address information (prefectural county city address) and position information (latitude and longitude), and outputs position information corresponding to the address information. As described below, in the embodiment, the geocoder outputs 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 from the geocoder as the second keyword. As will be described later, when the geocoder is used, the determination unit 102 refers to the address database, and has an address periphery search function for searching for address information around a predetermined position (address). The address database has a hierarchical structure for each delimiter (level) of “prefectural county city address”, and it is possible to search for a predetermined level (for example, up to “prefectural county city”). ing.

  When the first keyword is input as a search condition by the user, 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 on the display screen.

  For example, in the above example, when the user inputs “convenience store” as the first keyword, the determination unit 102 sets “Kawasaki city × ku” as the second address information corresponding to the current location of the display device 100. Decide on keywords. And the display part 103 displays "Convenience store Kawasaki-shi x ward" in a search keyword input column.

  The determination unit 102 can determine not only the current location but also address information corresponding to user-specified position information (specified position) as the second keyword. At the time of user designation, the determination unit 102 determines address information output by the geocoder as a second keyword based on position information designated by the user.

  The determination unit 102 may acquire position information of a destination or a stopover point (a stopover place in the middle of the destination) from an external device of the display device 100. For example, it is assumed that the user designates the position of the destination in order to perform a search operation of the destination such as a facility to be headed on the information search apparatus. In this case, the determination unit 102 can acquire the position information of the destination designated by the operation and input it to the geocoder, and the user can save the trouble of inputting the address information of the destination for searching. . Further, it is possible to give a narrowing condition to keywords without knowing address information at the destination. As described above, the display device 100 can acquire position information when the user performs an information search or the like as position information for determining the second keyword from an external device.

  Further, the determination unit 102 may determine the second keyword from a history stored in the device, not limited to the external device of the display device 100. For example, by holding the past history using the second keyword related to the operation input of the first keyword by the user, the frequency selected in the past history when the user inputs the first keyword. The second keyword (address information) having a high value can also be determined as the second keyword. Furthermore, the display order of the second keyword candidates is determined by combining the past history and the current location, or combining the past history and the designated position where the information such as the destination is searched. You can also.

  Then, the display unit 103 displays “Convenience Store Kawasaki City × Ku” composed of the first keyword and the second keyword as a search keyword in the search keyword input field.

  Thereafter, the display device 100 can perform a search based on the search keyword “convenience store Kawasaki city × ku” displayed in the search keyword input field, and displays and outputs a predetermined search result.

  The second keyword is a search condition different from that of the first keyword, but is an effective keyword for narrowing down search results that are numerous only with the first keyword. As described above, the second keyword is address information based on the current location (or user position designation) of the display device 100 possessed by the user, and the first keyword is narrowed down by address information around the user's current location. The search result desired by the user can be displayed at the top.

  For the second keyword, based on the movement position of the display device 100 in the past, for example, a position with high movement frequency (position information or address information of a predetermined facility or the like) is stored, and the past movement position is stored as the second keyword. Can also be automatically generated. In this case, address information at a position with a high movement frequency is displayed in the search keyword input field, and the search can be executed after the user confirms it.

  In addition, when the address around the current location is the second keyword, the determination unit 102 may have an address neighborhood search function that searches for an address around the current location address using the hierarchical structure of the address database. . In the address neighborhood search process, the information up to the next higher level “city” is extracted based on the address data of the lowest layer including “address” acquired as the current location. The address data of the next lower hierarchy “city, county, town and village” including information is searched for as the second keyword.

  A peripheral search example of this address will be described. For example, when the address data at the lowest level including “address” acquired as the current location is “Shin Kokura 1 in Saiwai-ku, Kawasaki-shi, Kanagawa”, the determining unit 102 refers to the address database and determines the hierarchy “city” The information “Kawasaki City, Kanagawa Prefecture” (parent hierarchy) is extracted. Thereafter, the determination unit 102 searches the address data of the next lower hierarchy “city county town” including the information of “city county town” and a plurality of wards in “Kawasaki City, Kanagawa Prefecture” (for example, “ “Kawasaki-ku, Kawasaki-shi, Kanagawa”, “Kawasaki-ku, Kanagawa-ken” and all other 6 wards) are the second keywords. As a result, a plurality of wards (in the same hierarchy (sibling hierarchy) of the address database) around the current location “Kawasaki City, Kanagawa Prefecture” can be determined as second keyword candidates.

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

  The automatic selection of the second keyword candidate is determined based on the number of search results when the search is performed at each level when the address of the current location is “Shin Kokura, Kawasaki City, Kanagawa Prefecture”, for example. In the case where the first keyword is “convenience store”, it is assumed that “convenience store + Kawasaki city” = 100 cases, “convenience store + Saiwai ward” = 40 cases, and “convenience store + Kawasaki ward” = 1 case. In this case, the determination unit 102 determines “Yuki-ku” as the second keyword by comparing with a predetermined threshold (for example, 10 or more and less than 100) corresponding to the number of search results. However, in the case of “unit”, since there may be a similar “unit” in other municipalities, the search is performed in combination with the keyword “city”.

  In addition, when there are second keyword candidates for the current location, destination, waypoint, and departure location as the second keyword, the determination unit 102 determines the current location, destination, waypoint, departure location based on the attributes of the first keyword. It may be determined which of these is preferentially displayed. For example, when the first keyword is “parking lot” or “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 at the destination, and the second keyword candidate of “destination” is preferentially displayed.

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

  FIG. 2 is a flowchart illustrating an example of a 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 search processing by the user on the display unit. Then, the display device 100 receives an input of a text input character string (first keyword) for search by a user operation (step S201).

  Next, the display device 100 determines the second keyword based on the current location of the device itself or the position designated by the user (step S202). For example, the display device 100 obtains address information of the current location by inputting the current location (latitude and longitude) of the device itself to the geocoder, and determines this address information as the second keyword. At this time, as described above, it is also possible to obtain address information around the current location of the device itself. Moreover, it is good also as a structure which acquires the address information of the position periphery not only the present location of an own apparatus but the user designated arbitrarily.

  Thereafter, 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 input by the user for the search, but the second keyword is not directly related to the first keyword, and is displayed based on the current location (or the position specified by the user). This is address information generated by the device 100.

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

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

  Thus, the search can be executed in a state where the user knows what the search keyword is. Thus, the display device can display the search results narrowed down by the current location of the user or the address information specified by the user without any operation input by the user, and the user desires in a list of many search results to be displayed. The result narrowed down to the one close to the search result can be presented to the user.

  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-saving operation, and an effective narrowing condition is set as the narrowing condition without knowing the address information. In addition, since the search result expected by the user is displayed, when the search result expected by the search process is not obtained, the search keyword for narrowing down the search result must be input again by the user after the search result is displayed. You can save time and effort.

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

  If the user determines that the second keyword is not appropriate, the second keyword in the search keyword input field may be deleted. In this way, it is possible to execute the search after the user has actually grasped the display of the search keyword input field to understand 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, the display device selects a search keyword that narrows the first keyword around the user's current location. Present to the user. As a result, even if the user does not input the narrowed-down second keyword, the display device automatically generates the narrowed-down search keyword, so that it is possible to perform a search based on an appropriate search keyword without the user operation. In addition, the user can execute a search in a state where the validity of the search keyword including the automatically generated second keyword is determined.

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

  Next, examples of the present invention will be described. In the embodiment, an example in which the navigation device 300 is mounted on the own vehicle and the navigation device 300 executes the function of the display device 100 will be described.

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

  The CPU 301 governs overall control of the navigation device 300. The ROM 302 records 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 data written under the control of the magnetic disk drive 304. As the magnetic disk 305, for example, an HD (hard disk) or an FD (flexible disk) can be used.

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

  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. Background data that represents features (features) such as buildings, rivers, the ground surface, and 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 a microphone 309 for audio input and a speaker 310 for audio output. The sound received by the microphone 309 is A / D converted in the sound I / F 308. For example, the microphone 309 is installed in a dashboard portion 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, and the like, a keyboard, and a touch panel. The input device 311 may be realized by any one form of a remote control, 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 displayed immediately, and a graphic controller. And a control IC for controlling the display 313 based on the image data to be processed.

  The display 313 displays icons, cursors, menus, windows, or various data such as 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, and the photographed image is analyzed by the CPU 301, or a recording medium such as the magnetic disk 305 or the optical disk 307 via the video I / F 312 Or output to

  The communication I / F 314 is connected to a network via wireless 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 and mobile phone networks, DSRC (Dedicated Short Range Communication), LAN, and WAN. The communication I / F 314 is, for example, a public line connection module, an ETC (non-stop automatic fee payment system, registered trademark) unit, an FM tuner, a VICS (Vehicle Information and Communication System) / 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 when the current position of the vehicle is calculated by the CPU 301 together with output values of various sensors 316 described later. The information indicating the current location is information for specifying one point on the map data such as latitude / longitude and altitude.

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

  The CPU 301 executes a predetermined program using the programs and data recorded in the ROM 302, the RAM 303, the magnetic disk 305, the optical disk 307, etc., shown in FIG. 3, so that the receiving units 101 to 101 of the display device 100 shown 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 process performed by the navigation device according to the embodiment. FIG. 4 is a configuration example of the determination unit 102 of 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 a search keyword input field 400 on the display 313 at the time of 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 and longitude) of the navigation device 300 from the GPS unit 315, and outputs address information corresponding to the latitude and longitude as a second keyword. Thereby, the navigation apparatus 300 displays the first keyword “xxx” KW1 and the second keyword “□ ○” KW2 as the search keyword KW on the search keyword input field 400.

  By displaying one character space between the first keyword KW1 and the second keyword KW2, it is easy to visually distinguish the first keyword KW1 and the second keyword KW2. The second keyword KW2 is not automatically input by the user, but is automatically generated by the navigation device 300. Therefore, the input may be unconfirmed by highlighting the second keyword KW2. The user may see the text characters of the second keyword KW2 and perform a confirmation operation when using it 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 a list 420 of search results. It is displayed on 313.

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

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

  When the user inputs the first keyword, the navigation device 300 acquires the current location (latitude / longitude) of the 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).

  Thereafter, the navigation device 300 determines whether or not a destination or waypoint is set (step S504). If the destination of the moving object or a waypoint in the middle of the destination has been set (step S504: Yes), the set destination and the location information (latitude and longitude) of the waypoint are input to the geocoder 410 (step S504). 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 process, the navigation device 300 (Geocoder 410) outputs the address information of the current location as the second keyword. If the destination or waypoint is set, the address information of the destination or waypoint is output as the second keyword in addition to the address information of the current location of the navigation device 300 (Geocoder 410).

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

  Thereafter, in step S505, the navigation device 300 displays 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 the current location only, or the current location, the destination, and the waypoint, it becomes one or a plurality of different address information, and there may be a plurality of candidates as a search keyword corresponding to this.

  When there are a plurality of search keywords, for example, the highest priority is given to display the current location for a predetermined sort order and second keyword, and the following are displayed as transit points and destinations according to the priority. In addition, based on a user setting or the like in advance, the display priority of the destination may be made highest or the priority of the waypoint may be made highest. At this time, as described above, a plurality of candidates can be displayed in a state where the second keyword is not yet confirmed, and the second keyword determined from the candidates can be confirmed and displayed. At this time, a plurality of candidate lists can be scrolled by an operation of moving the cursor, and the confirmation display can be performed by an operation of, for example, a space key or a kana conversion key.

  Then, by determining the second keyword by the user operation, the navigation device 300 determines the search keyword to be displayed in the search keyword input field 400 (step S506). Thereafter, the navigation device 300 performs a search process using the search keyword displayed in the search keyword input field 400 by a selection operation such as a search start button by the user (step S507), and sends the search result to the user. Present.

(Example 1 of address search process)
FIG. 6 is a diagram for explaining a processing example of address vicinity search using the address database performed by the navigation device according to the embodiment. 4 is a processing example performed by the CPU 301 of the navigation device 300 (the function of the determination unit 102 in FIG. 1 and the function using the geocoder 410 in FIG. 4), for example, processing for outputting address information around the current location based on position information of the current location An example is shown.

  First, when position information of the current location (for example, latitude / longitude “E139.40.35.6N35.32.4.0”) is input to the geocoder 410 (step S601), the geocoder 410 receives the address corresponding to the location information of the current location. The information “Shin Kokura 1, Saiwai-ku, Kawasaki-shi, Kanagawa” is output (step S602). Here, the CPU 301 extracts the address information “Yuki Ward, Kawasaki City, 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 “Kawasaki City, Kanagawa Prefecture” that is one level higher than the address information “Kawasaki City, Kanagawa Prefecture” obtained in step S602 (extracted from the municipality / county town) (step S603). The second keyword candidate KW2-2 is determined.

  Next, the CPU 301 searches the address database 610 and extracts the address information “Kawasaki City, Kanagawa Prefecture ○ ×” that is one level below the address information “Kawasaki City, Kanagawa Prefecture” 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 in the same hierarchy (sibling hierarchy) as the second keyword candidate KW2-1 obtained in step S602.

  Thereafter, the CPU 301 determines the plurality of second keyword candidates KW2-1 to KW2-3 as the second keyword KW2. Thereafter, the CPU 301 displays a search keyword KW including the first keyword KW1 and the second keyword KW2 in the search keyword input field 400. And CPU301 performs the search process by the search keyword KW by user operation.

  Here, if the search keyword input field 400 is configured to display multiple lines of text strings, 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, when the search keyword input field 400 is configured to display only one line of the text string, the CPU 301 selects a 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 the second keyword KW2 such that one or a predetermined number of the plurality of second keyword candidates KW2-1 to KW2-3 can be selected by the user. At this time, the CPU 301 assigns a predetermined priority to the plurality of second keyword candidates KW2-1 to KW2-3, and one second keyword candidate KW2 having a higher 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. The remaining second keyword candidates KW2-2 and KW2-3 are made selectable by a pull-down display or the like.

  The display priority of the second keyword candidates KW2-1 to KW2-3 is, for example, the highest priority for display of the current location, the priority in the order of the shortest distance from the current location, or the priority set in advance by the user. Based on the ranking or the like, it may be displayed in the order close to the current location on the route (guidance route) to the destination or waypoint set in the navigation.

  In the above description, the vicinity search of the address of the current location has been described as an example. However, the search for the periphery of the address of the destination or waypoint can be similarly performed even if the destination is a destination or waypoint.

  One of the plurality of second keyword candidates KW2-1 to KW2-3 obtained by the address peripheral search is determined as the second keyword KW2 by user selection, and the search keyword KW is used 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.

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

  As shown in FIG. 7, the navigation device 300 acquires position information (latitude and longitude) P of the current location on the map data 700. Then, the latitude and longitude of four positions that are separated in all directions (four directions in the east, west, south, and north along the XY axis) by a predetermined distance (offset) L around the current location P on the map data 700. Get an address.

  In the example of FIG. 7, the address of the current location P is “Shin Kokura, Kawasaki City, Kanagawa Prefecture”. The position On in the north direction, which is a distance (offset) L, centered on the current location P is “Kashimada, Kawasaki City, Kanagawa Prefecture”, and the position Oe in the east direction, a distance L, is “Kawasaki City, Kanagawa Prefecture” The location Ow in the west direction, which is “Furukawa-cho, Yuki-ku”, is “Minami Kase, Yuki-ku, Kawasaki-shi, Kanagawa”. Further, the position Os in the south direction separated by the distance L is “Egasakicho, Tsurumi-ku, Yokohama, Kanagawa Prefecture”.

  As described above, by acquiring the addresses of the positions On, Oe, Ow, and Os that are separated by the offset (distance) L from the current location P as the center on the map data 700, the addresses around the current location P can be acquired. More specifically, the position information (latitude and 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 from the geocoder 410 is used.

  In the example shown in FIG. 7, the address of the current location P and each position On, Oe, Ow is “Sachi Ward, Kawasaki City”, 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, address information around the current location P can be easily obtained.

  FIG. 8A and FIG. 8B are diagrams illustrating an example of offset setting for peripheral search using map data performed by the navigation device according to the embodiment. As shown in FIG. 8A, when the density of the administrative divisions (thick lines in the figure) at the time of displaying the map data 700 at a predetermined scale is rough, the offset of each position On, Oe, Ow, Os centered on the current location P (Distance) L1 is set to be relatively large. For example, any one of the positions On, Oe, Ow, and Os is set as an offset (distance) L1 that exceeds the administrative district and is located in another administrative district. In the example of FIG. 8A, the two positions Os and Ow are located in administrative districts different from the current location P.

  On the other hand, as shown in FIG. 8B, when the density of the administrative divisions (thick lines in the figure) at the time of displaying the map data 700 at a predetermined scale is dense, each position On, Oe, Ow, Os centered on the current location P is displayed. Is set to a relatively small offset (distance) L2. For example, the offset (distance) L2 is set such that the positions On, Oe, Ow, and Os are not located in different administrative districts with respect to the current location P. In the example of FIG. 8B, the two positions On and Ow are located in administrative districts different from the current location P.

  As shown in FIG. 8A and FIG. 8B, by performing a peripheral search that is set by changing the offset (distance) L from the current location P according to the administrative division on the map data 700, one address indicated by the address information of the current location P is displayed. Not only administrative districts but also the addresses of other administrative districts in the vicinity can be obtained.

(Example 3 of address neighborhood search)
FIG. 9 is a diagram for explaining a processing example of 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.

  The first keyword KW1 “convenience store” is obtained by user operation input. 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 address database 610 described above to indicate the second keyword candidate “Kawasaki City Yuki Ward” KW2-1, the second keyword candidate “Kawasaki City” KW2-2, and the second keyword Candidates “Kawasaki-ku, Kawasaki-ku and other 6 wards” KW2-3 are obtained.

  Further, the combination unit 901 obtains the second keyword candidate “Tsurumi-ku, Yokohama-shi” KW2-A using the map data 700 described above. This “Tsurumi-ku, Yokohama-shi” is not included in the second keyword candidates KW2-1 to KW2-3 using the address database 610 (see FIG. 6). Thus, 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, one of the address database 610 or the map database 700 is obtained. It becomes possible to obtain the second keyword candidate KW2-A that cannot be obtained only by this. As a result, a plurality of second keyword candidates for searching around the current location P can be determined.

  Also in this processing example, as described above, all or a part of the plurality of second keyword candidates KW2-1 to KW2-3 and KW2-A are assigned in accordance with the priority order according to the number of display lines in the search keyword input field 400. Can be sorted and displayed.

  FIG. 10 is a diagram illustrating another offset setting example of the peripheral search using the map data performed by the navigation device according to the example. The second keyword KW2 is a keyword for narrowing down the search result by the first keyword KW1. For this reason, you may have multiple distance (offset) L to each direction (N, E, W, S) of the east, west, north, and south centering on the present location P.

  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. Thereby, the position information (latitude and longitude) input to the geocoder 410 is two for each direction, and correspondingly, the address information is output from the geocoder 410 for each direction.

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

  Furthermore, the direction in which the offset L is set may also 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 apparatus 300 sets the offset L in each of the three directions of northeast west (N, E, W) excluding the south. As a result, the address information corresponding to the moving direction of the moving body can be narrowed down and searched as the second keyword, and a search result corresponding to the moving direction of the moving body can be obtained.

  Furthermore, the set number of offsets L for each direction may also 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 apparatus 300 does not set the offset L or sets it at a single distance L1 in the south (S) direction opposite to the traveling direction. A plurality of offsets L1 and L2 are set for each direction in the three directions of northeast and west (N, E, W). As a result, the number of second keyword candidates corresponding to the moving direction of the moving object can be increased.

(Example of display processing by the server)
In the above embodiment, the navigation device 300 executes the search process. However, even if the navigation device 300 or a simple display device (for example, a smartphone or a server communication type navigation device) is used, the same search process is performed. Can be executed. In this case, the display device has the function of the reception unit 101 illustrated in FIG. 1, and the server has the functions of the determination unit 102 and the display unit 103.

  The display device only needs to have a function such as GPS that can detect the current location, a communication unit that communicates with a server via a network such as the Internet, an input unit, a display unit, and the like. One keyword is transmitted 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 a search keyword including the first keyword and the second keyword in the search keyword input field 400 of the display unit.

  And a display apparatus or a server performs a search process by user operation with respect to the search keyword displayed on the search keyword input column 400. FIG. During the search process, the display device can be configured to obtain a search result by accessing a predetermined search server via the communication unit.

  As described above, even in the case of a 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-described embodiment.

  According to the embodiment described above, the navigation device automatically generates the second keyword based on the current location (destination, waypoint, etc.) of the mobile object, and enters the search keyword input field together with the first keyword operated by the user. indicate. Thereby, the user can perform a search after visually confirming the display of the second keyword displayed in the search keyword input field, and can narrow down the search result based on the first keyword by the address information of the current location, At this time, the operation input of the second keyword by the user becomes unnecessary, and the search result expected by the user can be obtained from among a large number of search results.

  Moreover, since the position of the current location always changes based on the movement of the mobile object, the user often does not know the information (location and address) of the current location being moved. In this way, even when 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. It becomes like this.

  Furthermore, with respect to the second keyword automatically generated by the display device, the second keyword can be selected by the user by displaying a plurality of second keyword candidates by address peripheral search. Since the second keyword can be selected by the user, the search result expected by the user can be presented with higher accuracy.

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

DESCRIPTION OF SYMBOLS 100 Display apparatus 101 Reception part 102 Determination part 103 Display part 300 Navigation apparatus 301 CPU
302 ROM
303 RAM
KW search keyword KW1 first keyword KW2 second keyword

Claims (10)

Receiving means for receiving input of the first keyword by the user;
Determining means for determining a second keyword based on a current location or a designated position designated by a user;
When the first keyword is input as a search condition, display means for displaying the determined second keyword together with the first keyword as a search condition different from the first keyword;
A display device comprising:   The display device according to claim 1, wherein the determination unit determines the second keyword based on a name of a part of an address at the current position of the device or the designated position.   The determining means includes the second of the address names based on the number of search results when the plurality of hierarchies of the address name are determined as the second keyword. The display device according to claim 2, wherein a 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 location, and extracts the current location or the designated location and the current location or the designated location. The display device according to claim 1, wherein peripheral address information is determined as the second keyword.   The said determination means is displayed as a 2nd keyword candidate, when there are two or more said 2nd keywords, and determines as a said 2nd keyword based on user selection, The any one of Claims 1-4 characterized by the above-mentioned. Display device. The determining means includes a geocoder that performs conversion between position information and address information,
The position information of the current location of the device itself is input to the geocoder, the output of address information corresponding to the current location is obtained, and the second keyword is determined based on the address information. The display device according to any one of 5.   The display device according to claim 1, wherein the determination unit determines whether an address of a current location or a destination is the second keyword based on an attribute of the first keyword.   2. The display unit according to claim 1, wherein the display unit changes a display mode of the second keyword depending on whether the second keyword is based on a destination or a current location. Display device. In the display method performed by the display device,
An accepting step for accepting input of a first keyword by a user;
A determination step of determining a second keyword based on the current location or the specified position;
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 a search condition;
A display method comprising:   A display program for causing a computer to execute the display method according to claim 9.

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