JP2014160366A - Electronic apparatus, method for displaying estimated position of object, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively support a search for a missing object.SOLUTION: A user moves while carrying a target object and an electronic apparatus. The electronic apparatus periodically receives ID information of the target object by radio communication, and stores a history of position information of the electronic apparatus when the ID information is received, as history data. When the user loses the target object and it becomes impossible to receive the ID information, the electronic apparatus estimates an existence position of the object on the basis of the history data, and displays the estimation result with map information. For example, the electronic apparatus displays on the map a marker (352) presenting a position of the electronic apparatus (P) when the last ID information is received, and/or a range (351) estimated on the basis of a predetermined reception maximum distance from the position as an estimated existence position (range) of the object.

Description

  The present invention relates to an electronic apparatus, an object position prediction display method, and a program.

  When a user loses an object, such as dropping an object, the user generally tries to find an object by going back the way he / she used his / her memory. However, it cannot be said that it is efficient to walk around in the dark clouds along the path that the object has moved.

  As a method to assist in searching for lost packages during travel, RFID tags are attached to each package, the presence or absence of each package is confirmed using an RFID reader each time the package is moved, and a history of confirmation results is stored. (See, for example, Patent Document 1 below; see the summary in particular).

JP 2009-242038 A

  Although the search for lost objects (lost baggage) is somewhat supported by the above method, the support effect is not sufficient.

  SUMMARY An advantage of some aspects of the invention is that it provides an electronic apparatus, an object position prediction display method, and a program that effectively support a search for a lost object.

  An electronic device according to the present invention includes a position information acquisition unit that acquires position information of the electronic device, a display unit, a reception unit that receives the unique information via communication from an object to which the unique information is assigned, A storage unit that stores history data indicating the history of the position information when the unique information is received, and when the reception of the unique information is disabled, predicts the presence position of the object based on the history data, And a control unit that displays the prediction result together with the map information on the display unit.

  When it is impossible to receive the specific information due to the object moving away from the electronic device or the like, the position of the object can be predicted based on the history data. The electronic device displays the predicted result together with the map information. Thereby, the user can search for an object efficiently by looking at the display content.

  Specifically, for example, the control unit predicts the existence range of the object based on position information when the specific information was last received and a predetermined maximum reception distance in the reception unit, and displays the display unit. May be displayed.

  Further, for example, the storage content of the storage unit includes history data of the reception strength of the communication in the reception unit, and the control unit may perform the prediction using the history data of the reception strength. .

  Further, for example, the control unit may perform the prediction based on position information when the unique information is last received and position information obtained after the unique information is last received.

  Further, for example, when the electronic device has moved through a plurality of positions in the reception period in which the unique information has been received, the control unit is configured to include the electronic device existence time for each position in the reception period. Alternatively, the number of passages of the electronic device for each position during the reception period may be derived based on the history data, and the prediction may be performed using the derivation result.

  Further, for example, the control unit searches the map information for a specific type of building on the basis of the position of the electronic device when the specific information was last received, and predicts the position of the searched building from the position of the object. It may be included in the position and displayed on the display unit.

  The method according to the present invention is an object position prediction display method used for an electronic device including a display unit, and includes a reception step of receiving the specific information from an object to which specific information is assigned via communication, and the specific information A storage step of storing history data indicating a history of position information of the electronic device when the information is received; and when the specific information cannot be received, the presence position of the object is predicted based on the history data And a control step for displaying the prediction result together with the map information on the display unit.

  And it is good to form the program which makes a computer implement | achieve the said object position prediction display method.

  ADVANTAGE OF THE INVENTION According to this invention, it is possible to provide the electronic device, the object position prediction display method, and program which assist the search of a lost object effectively.

It is a figure which shows the electronic device and target object which concern on embodiment of this invention. It is a figure which shows a mode that the user is carrying the electronic device and target object which concern on embodiment of this invention. It is an internal configuration block diagram of an electronic device according to an embodiment of the present invention. It is a figure which shows the log | history data memorize | stored. It is a figure which shows the map displayed. It is a figure which shows the display content which concerns on 1st Example of this invention. It is a figure which shows the display content which concerns on 2nd Example of this invention. It is a figure which shows the time change of the reception strength which concerns on 3rd Example of this invention. It is a figure which shows the display content which concerns on 3rd Example of this invention. It is a figure which shows the display content which concerns on 4th Example of this invention. It is a figure which shows the display content which concerns on 5th Example of this invention. It is a figure which shows the display content which concerns on 6th Example of this invention.

  Hereinafter, an example of an embodiment of the present invention will be specifically described with reference to the drawings. In each of the drawings to be referred to, the same part is denoted by the same reference numeral, and redundant description regarding the same part is omitted in principle. In this specification, for simplification of description, a symbol or reference that refers to information, signal, physical quantity, state quantity, member, or the like is written to indicate information, signal, physical quantity, state quantity or Names of members and the like may be omitted or abbreviated.

  The object management system according to the embodiment of the present invention includes the electronic device 1 and the target object 2 shown in FIG. The user of the object management system carries the electronic device 1 and the target object 2 and moves as shown in FIG. However, in the present embodiment, it is assumed that the user moves while leaving the target object 2 left in an arbitrary place, and as a result, sometimes the target object 2 is lost. The fact that the user loses sight of the target object 2 as a result of the user leaving the target object 2 where the target object 2 is left in an arbitrary place is expressed as loss of the target object 2 or simply loss. Note that the target object 2 can be left for any reason (such as dropping the target object 2).

  The target object 2 has a built-in or attached transmission unit 2a capable of transmitting ID information that is unique information. As a result, the target object 2 is assigned the ID information. The ID information of the target object 2 is transmitted to the electronic device 1 via communication between the target object 2 and the electronic device 1 (more specifically, via communication between the transmission unit 2a and the reception unit 11 described later). Is done. However, if the target object 2 is lost and the distance between the target object 2 and the electronic device 1 is accordingly increased, the transmission becomes impossible.

  FIG. 3 is a block diagram of the internal configuration of the electronic device 1. The electronic device 1 is provided with each part referred by the codes | symbols 11-17. Although not read from FIG. 3, the electronic device 1 may be provided with a telephone function, an Internet connection function, an electronic mail transmission / reception function, and / or a music playback function. The target object 2 may also be a device classified as an electronic device. The electronic device 1 or the electronic device 1 as the target object 2 is an arbitrary information device that can acquire, reproduce, or process arbitrary information. For example, a mobile phone, an information terminal, a personal computer, an electronic book reader, An electronic dictionary, a digital camera, a game machine, or a navigation device. However, the target object 2 may be any object (such as a bag or paper notebook) that is not classified as an electronic device.

  The receiving unit 11 receives the ID information transmitted from the transmitting unit 2a through wireless communication. As wireless communication in the transmission unit 2a and the reception unit 11, any wireless communication using radio waves or electromagnetic fields can be used. For example, ID information may be transmitted to the electronic device 1 using RFID (radio frequency identification) technology. In this case, the transmission unit 2a may be formed of an RF tag in which ID information is embedded. Alternatively, any wireless communication using light (for example, infrared communication based on IrDA (infrared data association) standard) may be used as the wireless communication in the transmission unit 2a and the reception unit 11. The transmission unit 2a transmits ID information either spontaneously or in response to a request signal from the electronic device 1. The transmission and reception of ID information between the transmission unit 2a and the reception unit 11 are executed at an arbitrary timing (for example, periodically).

  The ID information includes a unique ID symbol assigned to the target object 2, an object name that is the name of the target object 2, an object image that indicates the appearance of the target object 2, and arbitrary additional information. good. The ID information received by the receiving unit 11 is transmitted to the control unit 17.

  The position information acquisition unit 12 acquires position information indicating the current location of the electronic device 1 using any known method. The position information acquisition unit 12 may acquire position information based on signals from satellites forming a global positioning system (GPS), or may use wireless communication via Wi-Fi (registered trademark) or a telephone line. The position information may be acquired, or the position information may be acquired by a combination thereof. Further, the position information acquisition unit 12 may use a gyro sensor that measures the angular acceleration of the electronic device 1 and / or a speed sensor that measures the moving speed of the electronic device 1 for acquiring the position information.

  The position information includes the latitude, longitude, and altitude of the current location of the electronic device 1 (however, the altitude may not be acquired). The accuracy of latitude and longitude of the electronic device 1 indicated by the position information and the accuracy of the altitude of the electronic device 1 indicated by the position information may be further included in the position information. Further, the moving speed of the electronic device 1 may be included in the position information.

  The map information acquisition unit 13 acquires map information to be displayed on the display unit 15 using any known method. The map information acquisition unit 13 can acquire map information from a server device (not shown) connected to the network via wireless communication. However, map information may be acquired from a map database that can be provided in the electronic device 1.

  The map information includes a map (map data) centered on an arbitrary point. The map in the map information may be a map that includes the current location of the electronic device 1, a predicted presence position that will be described later, or a map that includes both of them. The map information may further include a scale in the map.

  The storage unit 14 includes a semiconductor memory or the like, and stores arbitrary data under the control of the control unit 17. The display unit 15 is a display device including a liquid crystal display panel or the like, and displays an arbitrary video under the control of the control unit 17. The operation unit 16 is formed by a mechanical operation member such as a mechanical push button switch or a dial and / or a touch panel that can be provided in association with the display unit 15 and receives various instructions and operations from the user. The control unit 17 is formed of a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like, and follows various instructions and operations input to the operation unit 16 while in the electronic device 1. Centrally control the operation of each part. In the following description, unless otherwise specified, reception refers to reception in the reception unit 11, and display refers to display in the display unit 15.

  The control unit 17 has a function of acquiring the current time and a function of detecting the reception strength of communication in the reception unit 11 (for example, reception strength of radio waves of ID information arriving from the transmission unit 2a; hereinafter simply referred to as reception strength). When the reception unit 11 receives the ID information, the reception unit 11 stores the ID information reception time, reception intensity, and position information at the reception time in association with each other. Now, the symbol t [i] is introduced as a symbol representing the time (see FIG. 4), the position information acquired by the position information acquisition unit 12 at the time t [i], and the reception intensity at the time t [i]. Are represented by symbols P [i] and RI [i], respectively (i is an integer). For any integer i, time t [i + 1] is later than time t [i].

  Then, the history data DD as shown in FIG. 4 is stored in the storage unit 14. In the present embodiment, the ID information is successfully received by the receiving unit 11 at each of the times t [1] to t [n], but each time after the time t [n] (time t [n + 1] and t (including t [n + 2]), the reception of the ID information in the receiving unit 11 has failed (becomes impossible). Success / failure of reception of ID information at each time is also included in the history data DD. As a result of the reception failure at each time after time t [n], reception intensity corresponding to each time after time t [n] is not included in the history data DD. Note that the storage of the reception intensity RI [i] is not essential. The received ID information may also be stored in the storage unit 14. In this embodiment, n is considered to be a sufficiently large integer, but n may be any integer of 1 or more.

  Among the history data DD, the position information P [1] to P [n] related to the times t [1] to t [n] forms reception position history data indicating the history of the position information when the ID information is received. ing. When the target object 2 is lost and the ID information cannot be received, the control unit 17 performs a support process for helping to find the target object 2. In the support process, the control unit 17 predicts the current location of the target object 2 based on the history data DD, and displays the prediction result on the display unit 15 together with the map information. By performing such support processing, the search for the target object 2 by the user is supported, and prompt discovery of the target object 2 is expected.

  Hereinafter, the predicted position of the target object 2 is also referred to as a predicted predicted position. The predicted presence position may be a position having a spread, and the predicted existence position having a spread can also be referred to as a predicted presence range (predicted range of the target position of the target object 2). The display of the prediction result includes displaying the predicted presence position of the target object 2 on the map in the map information (displaying the map and displaying the predicted presence position on the map). It may be considered that a prediction unit (not shown) that performs the prediction is included in the control unit 17. In the following, for the sake of concrete explanation, it is assumed that the time at which the support process is performed is time t [n + j] (j is a natural number).

  Specific operation examples or application techniques related to the support processing will be described in a plurality of embodiments below. As long as there is no contradiction, among the embodiments described below, the matters described in one embodiment can be applied to and combined with any other embodiment.

<< First Example >>
A first embodiment will be described. Control unit 17 according to the first embodiment, the present position P _A of the electronic device 1 when it receives the ID information to the end, is estimated as the existence predicted position of the target object 2 (time t [n + j] in the object 2 Predicted as the location). The present position P _A of the electronic device 1 when it receives the ID information to the end, the position of the electronic device 1 shown by the position information P [n] (see FIG. 4). When the target object 2 has not been lost, the user is carrying both the electronic device 1 and the target object 2, and therefore their existence positions are considered to be substantially the same. Therefore, after the target object 2 is lost, it is highly likely that the target object 2 is left in the vicinity of the position P _A or the position P _A , and the position P _A is likely to be the expected position of the target object 2. .

  In the support process, the map information acquisition unit 13 acquires map information including map data including the predicted existence position, and preferably the electronic device at the predicted existence position and the current location of the electronic device 1 (that is, the electronic device at time t [n + j]). Map information including data of the map 300 including the position 1) is acquired (see FIG. 5). In the following, it is assumed that the latter map information is acquired (the same applies to other examples described later). An image of a map 300 in the acquired map information is shown in FIG.

  The control unit 17 can display an image as shown in FIG. 6 on the display unit 15. That is, in the support process, the control unit 17 includes the movement path 310 of the electronic device 1 based on the history data DD, and the current location marker 320 indicating the current location of the electronic device 1 (that is, the position of the electronic device 1 at time t [n + j]). The object position prediction index indicating the predicted presence position of the target object 2 can be superimposed on the map 300 and displayed on the display unit 15 together with the map 300 (the same applies to other examples described later).

Marker 330 of FIG. 6 is a object position predicted indicators in the first embodiment, showing the position P _A of the. As shown in FIG. 6, the movement path 310 may be a movement path of the electronic device 1 during the period in which the ID information can be received (that is, until the time t [n]), or the electronic device up to the current time. One movement route may be used. The current location marker 320 may include orientation information based on the output of the electronic compass. In the support process, information corresponding to each marker (for example, a character string “predicted position of target object”) may be displayed in association with each marker, or the current location of the electronic device 1 (that is, the user) The current location) to the predicted location of the target object 2 may be displayed on the map 300 (the same applies to other examples described later). Information corresponding to each marker may be displayed when the user selects each marker using the operation unit 16. In each embodiment described below, the position P _A may function as one of the present expected position.

<< Second Example >>
A second embodiment will be described. Depending on the form of communication between the transmission unit 2a and the reception unit 11, there is a limit to the distance at which the reception unit 11 can receive the ID information. The maximum value of the distance between the target object 2 and the electronic device 1 (specifically, the distance between the transmission unit 2a and the reception unit 11) at which the reception unit 11 can receive ID information is referred to as a maximum reception distance. FIG. 7 shows a display state by the support process of the second embodiment. In support processing according to the second embodiment, the control unit 17, the present position P _A of the electronic device 1 when it receives the ID information to the end (that is, the position information P [n]), recognized by the control unit 17 The current presence range 351 of the target object 2 is predicted based on the predetermined maximum reception distance, and the prediction result is displayed on the display unit 15 as the predicted presence position of the target object 2.

The existence range 351 is inside a circle centered on the position P _{A and} having the maximum reception distance as a radius. In the example of FIG. 7, the outer frame of the existence range 351 is displayed by a broken line. _A marker 352 indicating the position PA may be displayed together with the display of the existence range 351. In the example of FIG. 7, the object position prediction index shown on the map 300 (see FIG. 5) includes an existence range 351 and a marker 352. In addition, when the information regarding the accuracy of latitude, longitude, and altitude is included in the position information, the existence range 351 may be determined using the information regarding the accuracy.

  Even if the user drops the target object 2, the ID information is continuously received by the receiving unit 11 when the user carrying the electronic device 1 is within the maximum receiving distance from the target object 2. If the support process is performed in consideration of the maximum reception distance as in the second embodiment, it is possible to indicate to the user the likely existence range of the target object 2 in consideration of the maximum reception distance.

<< Third Example >>
A third embodiment will be described. In the third example, it is assumed that the user dropped the target object 2 at time t [10] before time t [n], and then the user moved toward an arbitrary direction. The reception intensity of communication in the reception unit 11 basically decreases as the distance between the target object 2 and the electronic device 1 (specifically, the distance between the transmission unit 2a and the reception unit 11) increases. If the maximum reception distance is generally exceeded, ID information cannot be received. Therefore, under the above assumption, the reception strength that has been maintained high starts to decrease from time t [10], and ID information cannot be received last at time t [n]. The control unit 17 can read such a tendency from the history data DD and estimate the position of the electronic device 1 at the time t [10] as the predicted existence position.

  In other words, the control unit 17 according to the third embodiment uses the history data (RI [1] to RI [n]) of the received intensity included in the history data DD, and the presence of the target object 2 at time t [n + j]. Predict position. The prediction accuracy can be improved by referring to the reception intensity history data.

A specific example of predicting the location of the target object 2 will be described with reference to FIG. FIG. 8 shows an example of the temporal change in reception intensity under the assumption of the third embodiment. The control unit 17 verifies the change in the received intensity retroactively based on the received intensity history data with reference to the received intensity RI [n] when the ID information was last received, and thereby the received intensity is received. The time that starts to decrease toward the intensity RI [n] is detected as the lost time. Then, the control unit 17 estimates the presence position P _B of the electronic device 1 at the detected lost time as the expected existence position of the target object 2 (estimates as the existence position of the target object 2 at the time t [n + j]). For the history data of reception intensity as shown in FIG. 8, since the time t [10] is detected as the lost time, the presence position P _B of the electronic device is the electronic device indicated by the position information P [10]. 1 position (see FIG. 4).

FIGS. 9A and 9B show a display state by the support process of the third embodiment. In the example of FIG. 9A or FIG. 9B, the object position prediction index displayed on the map 300 (see FIG. 5) includes a marker 371 indicating the position P _B , and further includes a marker 372 indicating the position P _A. (The display of the marker 372 can be omitted).

Further, as shown in FIG. 9B, the control unit 17 predicts the current existence range 373 of the target object 2 based on the position P _B and the maximum reception distance, and sets the prediction result as the expected existence position of the target object 2. It may be displayed on the display unit 15 (that is, the existence range 373 may be included in the object position prediction index and displayed). The existence range 373 is inside a circle having the position P _B as the center and the reception maximum distance as the radius. In the example of FIG. 9B, the outer frame of the existence range 373 is displayed by a broken line.

<< 4th Example >>
A fourth embodiment will be described. Communication of ID information between the transmission unit 2a and the reception unit 11 can be performed periodically, and a communication interval that is a cycle of the communication is arbitrarily determined in the object management system in FIG. be able to. At this time, when the communication interval is set wider to reduce power consumption related to communication (for example, when the communication interval is set to several tens of seconds to several minutes), the position where the user has lost the target object 2 There is a corresponding shift between the last received ID information and the position where the ID information is received.

Considering the existence of this shift, the support process of the fourth embodiment displays as shown in FIG. In other words, in the support process, the control unit 17 determines the presence position P _A (that is, the position information P [n]) of the electronic device 1 when the ID information is last received and the predetermined time from the time when the ID information is last received. Based on the presence position P _C of the electronic device 1 when the communication interval elapses, the current existence range 401 of the target object 2 is predicted, and the prediction result is displayed on the display unit 15 as the expected existence position of the target object 2. Thereby, it is possible to provide the user with a highly appropriate prediction result. Since the time interval between time t [n] and t [n + 1] corresponds to the communication distance, the electronics of the position P _C is the location information indicated by the P [n + 1] included in the history data DD, the time t [n + 1] 1 position. The position P _C need not be displayed.

The existence range 401 is a range including a line segment connecting the position P _A and the position P _{C. In} the example of FIG. 10, the existence range 401 is shown and exists as an elliptical range having the line segment as a major axis. The outer frame of the range 401 is displayed with a broken line. The interval of acquisition of the position information by the position information acquisition unit 12 is shorter than the communication interval, and details of the movement path of the electronic device 1 between the time t [n] and the time t [n + 1] (that is, in the history data DD (ie, , One or more pieces of position information acquired after time t [n] and before time t [n + 1] are included, even if the existence range 401 is predicted according to the detailed contents thereof good. In the example of FIG. 10, the object position predicted indicator shown on the map 300 (see FIG. 5) has included a marker 402 indicating the existence range 401 and the position P _A, it may be omitted in view of the marker 402 .

<< 5th Example >>
A fifth embodiment will be described. Although not limited to the fifth embodiment, in the reception period in which the ID information is received (that is, the period between time t [1] and t [n]), the electronic device 1 has a plurality of positions (hereinafter, The first to mth evaluation positions; m is an integer of 2 or more).

  With the history data DD, the position change of the electronic device 1 during the reception period is specified including the presence or absence of the position change of the electronic device 1. Therefore, the control unit 17 can derive the length of time during which the electronic device 1 was present at the evaluation position during the reception period, for each evaluation position, based on the history data DD. The length of time derived for the i-th evaluation position is called the i-th existence time (i is an integer). Further, the control unit 17 derives the number of times that the electronic device 1 has passed the evaluation position during the reception period (the number of times the electronic device 1 has moved via the evaluation position) for each evaluation position based on the history data DD. be able to. The number of times obtained for the i-th evaluation position is called the i-th number of passes (i is an integer). In the fifth embodiment, it is assumed that the position information is acquired at a short time interval such that each existence time and each number of passages can be derived within a predetermined allowable accuracy, and each position information is included in the history data DD. .

  When the user drops the target object 2, it is expected that a third party returns the target object 2 to an appropriate place. At this time, a user or a third party who knows the target object 2 often selects a place where the target object 2 is likely to be placed or a place where the user frequently comes as an appropriate place. For example, when the user drops the target object 2 in or near the workplace, the acquaintance of the user who picked up the target object 2 is a place where the target object 2 is likely to be placed or a place where the user is likely to visit As described above, it is expected that the user's desk in the workplace or a conference room frequently used by the user is selected and the target object 2 is returned there. Thus, when the user drops the target object 2, there is a high possibility that the target object 2 will be returned to an evaluation position by a third party with the relatively long existence time or the relatively large number of passages. It can be said.

  As another viewpoint, when the user thinks that the target object 2 is dropped with an equal probability with respect to time, the target object 2 is located at an evaluation position where the existence time is relatively long or the number of passages is relatively large. The possibility of being dropped is relatively high, and the idea that the user drops the target object 2 with an equal probability with respect to time seems plausible from the viewpoint of probability theory. Therefore, if it goes to the evaluation position where the existence time is relatively long or the number of passages is relatively large, the probability that the target object 2 can be found is high.

  Considering these, in the support process, the control unit 17 derives the first to m-th existence times or the first to m-th passage times and corresponds to the maximum existence time among the first to m-th existence times. The evaluation position or the evaluation position corresponding to the maximum number of passages among the first to mth passages is extracted from the history data DD, and the extraction position is estimated as the predicted presence position of the target object 2 (time t [ n + j] is predicted as the location of the target object 2).

  In consideration of these, in the support process, the control unit 17 derives the first to m-th existence times or the first to m-th passage times, and the target object from the first to m-th evaluation positions based on the derivation result. 2 are extracted, and the extracted predicted existence position is displayed together with the map 300. The predicted existence position to be extracted is an evaluation position corresponding to the maximum existence time of the first to m-th existence times, or an evaluation position corresponding to the maximum number of passages of the first to m-th passage times. Including at least. Among the 1st to m-th existence times, k evaluation positions corresponding to the 1st to k-th existence times, or the 1st to k-th number of passages among the 1st to m-th passage times. Corresponding k evaluation positions may be included in the predicted existence position (k is an integer of 2 or more and less than m).

FIG. 11 shows a display state by the support process of the fifth embodiment. In the example of FIG. 11, the object position predicted indicator displayed on the map 300 includes a marker 421 indicating the position P _D, may further comprise a marker 422 indicating the position P _A (display of the marker 422 can omitted). Position P _D corresponding to the marker 421, the maximum evaluation position of corresponding to the presence time or first to the maximum evaluation position corresponding to the number of passes of the first m number of passes of the first to m present time is there.

<< Sixth Example >>
A sixth embodiment will be described. The map information acquired by the map information acquisition unit 13 includes information indicating what kind of building each building on the map 300 is, and the control unit 17 determines whether the building on the map 300 is based on the map information. You can search for specific types of buildings in. In the support process, a building (for example, police box, police station, lost property center) in which the target object 2 may be delivered as a lost property is selected as a specific type of building.

Then, the support process, the control unit 17, as viewed from the position P _A of the electronic device 1 when it receives the ID information to the end, the particular type located within a particular type of building or predetermined distance located closest building Is searched from the map information, and the location of the searched building is included in the predicted existence position of the target object 2. If the user goes to a specific type of building corresponding to the expected location, it is expected that the target object 2 can be found with a reasonable probability.

FIG. 12 shows a display state by the support processing of the sixth embodiment. In the example of FIG. 12, the object position prediction index displayed on the map 300 includes a marker 441 indicating the position P _E and may further include a marker 442 indicating the position P _A (the display of the marker 442 can be omitted). A position P _E corresponding to the marker 441 is a location of a specific type of building included in the predicted existence position.

<< Deformation, etc. >>
The embodiment of the present invention can be appropriately modified in various ways within the scope of the technical idea shown in the claims. The above embodiment is merely an example of the embodiment of the present invention, and the meaning of the term of the present invention or each constituent element is not limited to that described in the above embodiment. The specific numerical values shown in the above description are merely examples, and as a matter of course, they can be changed to various numerical values.

  The target device that is the electronic device 1 or the control unit 17 can be configured by hardware such as an integrated circuit or a combination of hardware and software. Arbitrary specific functions that are all or part of the functions realized in the target device are described as a program, the program is stored in a flash memory that can be mounted on the target device, and the program is executed by the program execution device. The specific function may be realized by executing on a microcomputer (for example, a microcomputer that can be mounted on the target device). The program can be stored and fixed in an arbitrary recording medium (not shown). A recording medium (not shown) for storing and fixing the program may be mounted or connected to a device (such as a server device) different from the target device.

DESCRIPTION OF SYMBOLS 1 Electronic device 2 Target object 2a Transmitting part 11 Receiving part 12 Position information acquisition part 13 Map information acquisition part 14 Storage part 15 Display part 16 Operation part 17 Control part

Claims (8)

A position information acquisition unit that acquires position information of the electronic device;
A display unit;
A receiving unit that receives the unique information via communication from an object to which the unique information is assigned;
A storage unit that stores history data indicating a history of the position information when the unique information is received;
A control unit that predicts the presence position of the object based on the history data when the specific information cannot be received, and displays a prediction result on the display unit together with map information. Electronic equipment. The control unit predicts the existence range of the object based on position information when the specific information was last received and a predetermined maximum reception distance in the reception unit, and displays the range on the display unit. The electronic device according to claim 1. The storage content of the storage unit also includes history data of reception strength of the communication in the reception unit,
The electronic device according to claim 1, wherein the control unit performs the prediction using history data of the reception intensity. The said control part performs the said prediction based on the positional information when the said specific information was received last and the positional information obtained after the said specific information was received last. Electronic equipment. In the reception period in which the unique information has been received, when the electronic device has moved via a plurality of positions,
The control unit derives the time of existence of the electronic device for each position during the reception period or the number of times the electronic device passes for each position during the reception period based on the history data. The electronic apparatus according to claim 1, wherein the prediction is performed using a result. The control unit searches a specific type of building from the map information on the basis of the position of the electronic device when the specific information is last received, and includes the searched building position in the expected position of the object. The electronic device according to claim 1, wherein the electronic device is displayed on the display unit. An object position prediction display method used for an electronic device including a display unit,
Receiving the unique information via communication from an object to which the unique information is assigned; and
A storage step of storing history data indicating a history of position information of the electronic device when the unique information is received;
A control step of predicting the position of the object based on the history data when the specific information cannot be received, and displaying a prediction result on the display unit together with map information. Object position prediction display method.   The program which makes a computer implement | achieve the object position prediction display method of Claim 7.

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