JP2020122790A - Electronic apparatus, position identification system, position identification method and program - Google Patents

Abstract

To provide an electronic apparatus, a position identification system, a position identification method and a program that more accurately perform determining whether or not position information of a user is appropriate.SOLUTION: A wrist terminal 1 comprises: a positioning information acquisition unit 51; and a second filter processing unit 55. The positioning information acquisition unit 51 acquires a series of pieces of position information of a user. The second filter processing unit 55 detects whether or not there is a defective portion in which position information drops out for predetermined time or for a predetermined number of measurement times in a series of pieces of position information acquired by the positioning information acquisition unit 51. When the defective portion is detected, the second filter processing unit 55 identifies the defective portion and a portion corresponding to predetermined time or a predetermined number of measurement times from the defective portion as a portion which is not suitable for displaying in a series of pieces of position information.SELECTED DRAWING: Figure 2

Description

The present invention relates to an electronic device, a position specifying system, a position specifying method, and a program.

Conventionally, there is a technique in which a GPS positioning position with low positioning accuracy is not displayed when a user's movement locus is displayed.
Such a technique is described in Patent Document 1, for example.

JP, 2014-29281, A

By the way, an error may occur in the position information after the GPS position information cannot be acquired for a predetermined period. In Patent Document 1 described above, such an error that occurs in the position information is not taken into consideration, and the suitability of the position information of the user cannot be accurately determined.

The present invention has been made in view of such a situation, and an object of the present invention is to more accurately determine the suitability of user position information.

In order to achieve the above object, an electronic device according to an aspect of the present invention is a position information acquisition unit that acquires a series of position information of a user,
Judgment means for judging whether or not there is a deficient portion for a predetermined time or a predetermined number of times of measurement in the series of position information acquired by the position information acquisition means,
When it is determined by the determination means that there is the defective portion, a predetermined portion including the defective portion and a portion adjacent to the defective portion in the series of position information is specified as a portion not suitable for display, and Specifying means for varying the length of the period in which the position information after the defective portion is not output to the outside,
The output device outputs the series of position information in which a portion unsuitable for display is specified by the specifying unit to the outside.
Further, the electronic device according to one aspect of the present invention includes position information acquisition means for acquiring a series of position information of the user,
Judgment means for judging whether or not there is a deficient portion for a predetermined time or a predetermined number of times of measurement in the series of position information acquired by the position information acquisition means,
When the determination unit determines that there is the missing portion, a specifying unit that specifies a predetermined portion including the missing portion and a portion adjacent to the missing portion as a portion that is not suitable for display in the series of position information. When,
An output unit that outputs the series of position information in which a portion not suitable for display is specified by the specifying unit to the outside,
The specifying means may set a period during which the position information after the loss portion is not output to the outside when the loss portion determined by the determination means is equal to or more than the set threshold value.

According to the present invention, it is possible to more accurately determine the suitability of user position information.

FIG. 1 is an external configuration diagram of a wrist terminal as an embodiment of a mobile terminal of the present invention. It is a block diagram which shows the hardware constitutions of the wrist terminal as one Embodiment of the portable terminal of this invention. It is a functional block diagram which shows the functional structure for performing a position specific process and a parameter control process among the functional structures of the wrist terminal of FIG. It is a schematic diagram which shows the parameter used with an acceleration filter. It is a schematic diagram which shows the parameter used in a loss extension filter. It is a schematic diagram which shows the parameter used in a positioning context filter. It is a schematic diagram which shows the relationship between the kind of action and the filter used. It is a figure which shows the characteristic of the acceleration filter typically. It is a figure which shows the characteristic of the defect extension filter typically. It is a figure which shows typically the characteristic of the positioning context filter. 3 is a flowchart illustrating a flow of a position specifying process executed by the wrist terminal of FIG. 1B having the functional configuration of FIG. 2. It is a flow chart explaining the flow of acceleration filter processing. It is a flow chart explaining the flow of loss extension filter processing. It is a flow chart explaining the flow of positioning context filter processing. It is a schematic diagram which shows the example which displayed the user's position by the historical data (unprocessed historical data) before the filter process by a position identification process is performed. It is a schematic diagram which shows the example which displayed the user's position by the historical data after the filter process by a position identification process was performed. 3 is a flowchart illustrating a flow of a parameter control process executed by the wrist terminal of FIG. 1B having the functional configuration of FIG. 2. It is a functional block diagram which shows the functional structure of the wrist terminal for performing submersion detection filter processing. It is a flow chart explaining the flow of submersion detection filter processing.

Embodiments of the present invention will be described below with reference to the drawings.

[Hardware configuration]
1A and 1B are diagrams showing a configuration of a wrist terminal 1 as one embodiment of a mobile terminal of the present invention, FIG. 1A is an external configuration diagram, and FIG. 1B is a block diagram showing a hardware configuration.
The wrist terminal 1 is a wristwatch-type device having a function similar to that of a smartphone.
As shown in FIG. 1B, the wrist terminal 1 includes a control unit 11, a sensor unit 12, an input unit 13, an LCD (Liquid Crystal Display) 14, a clock circuit 15, a ROM (Read Only Memory) 16, and A RAM (Random Access Memory) 17, a GPS (Global Positioning System) antenna 18, a GPS module 19, a wireless communication antenna 20, a wireless communication module 21, and a drive 22 are provided. Note that the wrist terminal 1 can be appropriately provided with other hardware such as an imaging unit.

The control unit 11 includes an arithmetic processing unit such as a CPU (Central Processing Unit) and controls the operation of the wrist terminal 1 as a whole. For example, the control unit 11 executes various kinds of processing according to a program recorded in the ROM 16 such as a program for position specifying processing (described later).
The sensor unit 12 includes various sensors such as an acceleration sensor, a gyro sensor, an atmospheric pressure sensor, a geomagnetic sensor, or an altitude sensor.
The acceleration sensor detects acceleration in the three axis directions of the wrist terminal 1 and outputs information indicating the detected acceleration to the control unit 11.
The gyro sensor detects the angular velocities of the wrist terminal 1 in the three axial directions and outputs information indicating the detected angular velocities to the control unit 11.
The atmospheric pressure sensor detects the atmospheric pressure under the environment in which the wrist terminal 1 is present, and outputs information indicating the detected atmospheric pressure to the control unit 11. The wrist terminal 1 detects the altitude of the wrist terminal 1 based on the information output from the atmospheric pressure sensor.

The input unit 13 is composed of various buttons and a capacitance type or resistance film type position input sensor stacked in the display area of the LCD 14, or the like, and inputs various information in accordance with a user's instruction operation.
The LCD 14 outputs an image according to an instruction from the control unit 11. For example, the LCD 14 displays various images and user interface screens. In the present embodiment, the position input sensor of the input unit 13 is superposed on the LCD 14 to form a touch panel.
The clock circuit 15 generates a time signal from a system clock or a signal generated by an oscillator and outputs the current time.

The ROM 16 stores information such as a control program executed by the control unit 11.
The RAM 17 provides a work area when the control unit 11 executes various processes.
The GPS antenna 18 receives a radio wave transmitted from a satellite in GPS, converts the electric wave into an electric signal, and outputs the converted electric signal (hereinafter referred to as “GPS signal”) to the GPS module 19.
The GPS module 19 detects the position (latitude, longitude, altitude) of the wrist terminal 1 and the current time indicated by GPS, based on the GPS signal input from the GPS antenna 18. The GPS module 19 also outputs information indicating the detected position and the current time to the control unit 11.

The wireless communication antenna 20 is an antenna that can receive radio waves having a frequency corresponding to wireless communication used by the wireless communication module 21, and is configured by, for example, a loop antenna or a rod antenna. The wireless communication antenna 20 transmits an electric signal for wireless communication input from the wireless communication module 21 as an electromagnetic wave or converts the received electromagnetic wave into an electric signal and outputs the electric signal to the wireless communication module 21.
The wireless communication module 21 transmits a signal to another device via the wireless communication antenna 20 according to an instruction from the control unit 11. The wireless communication module 21 also receives a signal transmitted from another device and outputs information indicated by the received signal to the control unit 11.
The drive 22 is appropriately equipped with a removable medium 31 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory. The removable medium 31 can store various data such as position and altitude data.

FIG. 2 is a functional block diagram showing a functional configuration for executing the position specifying process and the parameter control process, among the functional configurations of the wrist terminal 1 of FIG. 1B.
The position specifying process is to apply various filters (acceleration filter, loss extension filter, and positioning context filter) described later to position information (hereinafter, appropriately referred to as “positioning information”) acquired by the GPS module. This is a series of processing for specifying the position while suppressing the use of inappropriate information.
In addition, the parameter control process is to post-verify whether the specified position is appropriate by setting the parameter in the position specifying process and performing the filtering process, and make the parameter more appropriate according to the verification result. It is a series of processes for updating to a different value.
When the position specifying process and the parameter control process are executed, as shown in FIG. 2, in the control unit 11, the positioning information acquisition unit 51, the action determination unit 52, the filter selection unit 53, and the first filter process. The unit 54, the second filter processing unit 55, the third filter processing unit 56, the parameter control unit 57, and the display control unit 58 function.
A history data storage unit 71, a parameter storage unit 72, and a map information storage unit 73 are set in one area of the ROM 16.
The history data storage unit 71 stores the history data of the positioning result for each action of the user (for example, one day's action or one activity). As the history data, both unprocessed data in which the position information acquired by the GPS module is stored as it is and history data of the position specified from the result of applying various filters described later are stored. R.
The parameter storage unit 72 stores parameters used in various filters described later.

3A to 3C are schematic diagrams showing an example of parameters used in various filters, FIG. 3A is a diagram showing parameters used in an acceleration filter, and FIG. 3B is a diagram showing parameters used in a loss extension filter. 3C is a diagram showing parameters used in the positioning context filter. FIG. In addition, in FIGS. 3A to 3C, the set numerical values are appropriately omitted.
As shown in FIG. 3A, in the acceleration filter, the types of activity are “trekking”, “fishing”, “cycling”, “paddle” (paddling with a kayak), “surfing”, “snow” (skiing or snowboarding). Etc.) are defined, and the conversion speed value Va [km/s] and the time interval reference Sa [s] are set for these. The converted speed value Va represents a threshold value of the degree of increase in speed (acceleration) between a and b at two points a and b in the time series of the historical data. The time interval reference Sa is a threshold determined by an experimental value or an empirical value, and a value adapted to each activity is set.

Further, as shown in FIG. 3B, in the defect extension filter, the types of activities are "daily activity", "trekking", "fishing", "cycling", "paddle" (paddling with a kayak), and "surfing". , "Snow" (ski, snowboard, etc.) are defined, and a loss threshold value Se and a loss extension rate X [%] are set for these. The loss threshold value Se is a threshold value for determining whether to apply the loss extension filter. The loss extension rate X indicates the rate of extending the loss period (time).

Further, as shown in FIG. 3C, in the positioning context filter, the types of activities are "daily activity", "trekking", "fishing", "cycling", "paddle" (paddling with a kayak), and "snow". (Ski, snowboard, etc.) are defined, and a return radius Rn [m], a conversion speed value Vd [km/h], and a time interval reference hd [h] are set as threshold values for these. The return radius Rn represents the threshold value of the distance between the point a, which is the time point before the point b of interest, and the point c, which is the time point after the point b, of the three points a, b, and c in the time series in the history data. The converted speed value Vd represents a threshold value of L/h1 where h1 is the time interval between the points a and b and L is the distance between the points b and a. The time interval reference hd is a threshold defined by an experimental value or an empirical value, and here, a common Tth1 is set for each activity.
Returning to FIG. 2, the map information storage unit 73 stores map information for superimposing and displaying the position specified by the position specifying process.

The positioning information acquisition unit 51 acquires the position information (positioning information) acquired by the GPS module at predetermined intervals (for example, 0.1 second intervals). Then, the positioning information acquisition unit 51 stores the acquired positioning information in the history data storage unit 71 as history data.
The action determination unit 52 determines (selects) the type of action performed by the user of the wrist terminal 1. At this time, the action determination unit 52 determines the action from the information indicating the type of action input by the user (the type of activity directly specified or the type of activity indirectly grasped from an operation such as navigation). It is possible to determine the action by analyzing the positioning information or the measurement result of the sensor unit 12. Further, the action determination unit 52 may determine the type of action by analyzing the action pattern of the user.

The filter selection unit 53 selects a filter to be used and a parameter used in the filter to be used from among the acceleration filter, the loss extension filter, and the positioning context filter according to the type of the action determined by the action determination unit 52. In the present embodiment, the filter used is preset according to the type of action. Each filter functions as a determiner that determines the suitability of positioning information.

FIG. 4 is a schematic diagram showing the relationship between the types of actions and the filters used.
As shown in FIG. 4, which of the acceleration filter, the loss extension filter, and the positioning context filter is used is preset for the action type. Further, in the present embodiment, the order of each filter when applied is set in the order of the acceleration filter, the loss extension filter, and the positioning context filter according to the characteristics of each filter. As an example, when it is determined that the user's behavior is cycling, the acceleration filter, the loss extension filter, and the positioning context filter are applied in this order.

When the filter selection unit 53 determines that the acceleration filter is used, the first filter processing unit 54 uses the parameter selected by the filter selection unit 53 to perform the filtering process by the acceleration filter.
The acceleration filter is a filter that excludes, based on the acceleration acquired from the positioning information, the positioning information that exceeds an acceleration that is not possible in reality as an abnormal value (determined as an invalid value and eliminated). The positioning information excluded by the acceleration filter is not treated as data loss, but the excluded data before and after is treated as adjacent data.

FIG. 5 is a diagram schematically showing the characteristics of the acceleration filter.
As shown in FIG. 5, for example, when riding a bicycle, it can be estimated that the acceleration in the traveling direction is an abnormal value when it exceeds the limit of acceleration by a human (when it is impossible).

If the GPS reception environment is good, the acceleration filter has a limited amount of positioning information to be excluded, is less effective than other filters, and is a filter that mainly uses past data. Therefore, it is a filter with high immediacy. Therefore, in this embodiment, it is set as the first filter for the positioning information.
When the filter selection unit 53 determines that the loss extension filter is used, the second filter processing unit 55 uses the parameters selected by the filter selection unit 53 to perform the filtering process by the loss extension filter.
The loss extension filter masks the positioning result for a predetermined time even after the actual loss period ends when a relatively long positioning loss period occurs (the positioning result after a certain loss period is invalid. It is a filter that suppresses the disturbance of positioning that occurs immediately after the loss period by determining that it is present and eliminating it. That is, the loss extension filter determines whether or not the positioning information is appropriate according to the acquisition status of the positioning information (length of loss period).

FIG. 6 is a diagram schematically showing the features of the defect extension filter.
As shown in FIG. 6, when a loss period exceeding a threshold value occurs in the GPS positioning information, a loss extension period is set by extending the loss period at a predetermined rate, and the positioning information after the loss extension period has passed is filtered. It is retained as history data after processing. That is, in the present embodiment, the loss extension period is variably set according to the length of the loss period, and the longer the loss period, the longer the loss extension period is set. With this configuration, it is possible to solve the problem that the longer the loss period is, the larger the positioning error of the position information acquired after the loss period is, and it takes time to obtain accurate position information. Further, it may be configured such that a fixed defect extension period is set regardless of the length of the defect period. By using the fixed period of loss extension, it is possible to reduce the processing amount required for determining the suitability of the position information.
In addition, the loss extension filter can hide the positioning information that is not suitable for display by a simple calculation, so it is effective for electronic devices that perform positioning with only GPS positioning information without positioning by self-contained navigation. It is a simple filter.
Since the loss extension filter eliminates positioning information for a relatively long period of time, it may not be appropriate to apply the acceleration filter to the data filtered by the loss extension filter from the viewpoint of the likelihood of evaluation of the positioning information. is there. Therefore, the loss extension filter is set as a filter at a stage subsequent to the acceleration filter.

When the filter selecting unit 53 determines that the positioning context filter is used, the third filter processing unit 56 uses the parameter selected by the filter selecting unit 53 to perform the filtering process by the positioning context filter.
The positioning context filter is a filter that eliminates sudden jumps in positioning results that occur in any situation based on the user's behavioral tendency (jumps jumps in positioning results that are determined to be invalid values). is there.

FIG. 7 is a diagram schematically showing the characteristics of the positioning context filter.
As shown in FIG. 7, when a round trip exceeding the action radius is performed in a short time with respect to the action radius set based on the user's action tendency, the action of the user is impossible. It can be estimated to be an outlier. In the example shown in FIG. 7, for the positioning information of the point b of interest, the action radius of the user is set using the positioning information of the points a and c, which are the time points before and after the time series, and the action radius is set to this action radius. It is determined whether or not the positioning information at point b is an abnormal value.
By using the positioning information at the points a and c, which are the time points before and after the time series, in determining whether the positioning information at the point b is an abnormal value, only the positioning information at the time point before the positioning information of interest is used. Compared with the case, even when the action state/moving speed largely changes before and after the attention point, the abnormal value determination can be performed with high accuracy.
Further, the present invention is not limited to the above processing, and the action radius of the user is set using only the positioning information of the point c which is a later point in time series with respect to the positioning information of the point b, and the positioning information of the point b is abnormal. You may comprise so that it may determine whether it is a value.
Since the positioning context filter can adaptively eliminate various errors that cannot be removed by the acceleration filter and the loss extension filter, it is set as the last filter.

By executing the parameter control process, the parameter control unit 57 detects an error from the actual position in the result of specifying the position by the position specifying process, and feeds back the value of the parameter used for each filter. As a result, machine learning of the parameters used in the position specifying processing is performed, and the accuracy of the parameters can be improved.
For example, the parameter control unit 57 specifies the position by the position specifying process from the positioning information acquired by the positioning information acquisition unit with respect to the teacher data whose actual position is separately known, and determines whether the specified position is correct. Adjust the filter parameters to reduce the difference from the position. It should be noted that, in addition to the case of using the teacher data in which the actual position is separately grasped, when the position having a certain validity is estimated by the map matching (route fitting) or the like, the estimation result and the position specifying process are used. The filter parameters may be adjusted so as to reduce the difference from the specified position.

The parameter control process is executed as a posterior process to the position specifying process at a timing when the operation rate of the control unit 11 of the wrist terminal 1 is low (for example, midnight). However, the parameter control unit 57 may sequentially update the parameters by executing the parameter control processes in parallel while the position specifying process is being performed.
The display control unit 58 displays, on the LCD 14, a map screen in which the position indicating the movement history is superimposed and displayed on the map information based on the filtered history data stored in the history data storage unit 71.
The recording control unit 59 stores the processing results of the first filter processing unit 54, the second filter processing unit 55, and the third filter processing unit 56 in the history data storage unit 71. Note that the recording control unit 59 retains the unprocessed data in which the sensor information acquired by the sensor unit 12 or the position information acquired by the GPS module is stored as the original, and associates the unprocessed data with the unprocessed data. The result of the filtering process is stored in the history data storage unit 71.

[motion]
Next, the operation of the wrist terminal 1 will be described.
[Position identification processing]
FIG. 8 is a flowchart illustrating the flow of the position specifying process executed by the wrist terminal 1 of FIG. 1B having the functional configuration of FIG.
The position specifying process is started by the user performing an operation for instructing the start of the position specifying process.

In step S1, the position information (positioning information) acquired by the GPS module is acquired at predetermined intervals (for example, 0.1 second intervals).
In step S2, the positioning information acquisition unit 51 stores the acquired positioning information in the history data storage unit 71 as history data.
In step S3, the action determination unit 52 determines the type of action performed by the user of the wrist terminal 1.

In step S4, the filter selection unit 53 determines whether or not the type of action determined by the action determination unit 52 is a target action that uses the acceleration filter.
When the type of action determined by the action determination unit 52 is the action of the target using the acceleration filter, YES is determined in step S4, and the process proceeds to step S5.
On the other hand, when the type of the action determined by the action determination unit 52 is not the action of the target for which the acceleration filter is used, it is determined as NO in step S4, and the process proceeds to step S7.

In step S5, the filter selection unit 53 selects a parameter used in the acceleration filter based on the type of action determined by the action determination unit 52.
In step S6, the first filter processing unit 54 uses the parameters selected by the filter selection unit 53 to perform filter processing by an acceleration filter (acceleration filter processing).

In step S7, the filter selection unit 53 determines whether or not the type of action determined by the action determination unit 52 is a target action that uses the loss extension filter.
When the type of the action determined by the action determination unit 52 is the action of the target using the loss extension filter, YES is determined in step S7 and the process proceeds to step S8.
On the other hand, when the action type determined by the action determination unit 52 is not the target action using the loss extension filter, NO is determined in step S7, and the process proceeds to step S10.

In step S8, the filter selection unit 53 selects a parameter used in the loss extension filter based on the type of action determined by the action determination unit 52.
In step S<b>9, the second filter processing unit 55 uses the parameters selected by the filter selection unit 53 to perform filter processing by the loss extension filter (loss extension filter processing).

In step S10, the filter selection unit 53 determines whether the type of action determined by the action determination unit 52 is a target action that uses the positioning context filter.
When the type of action determined by the action determination unit 52 is the action of the target for which the positioning context filter is used, YES is determined in step S10 and the process proceeds to step S11.
On the other hand, when the action type determined by the action determining unit 52 is not the action of the target using the positioning context filter, NO is determined in step S10, and the process proceeds to step S13.

In step S11, the filter selection unit 53 selects a parameter used in the positioning context filter based on the type of action determined by the action determination unit 52.
In step S12, the third filter processing unit 56 uses the parameter selected by the filter selection unit 53 to perform filter processing by the positioning context filter (positioning context filter processing).
In step S 13, the recording control unit 59 stores the result of the filtering process in the history data storage unit 71.

In step S14, the display control unit 58 displays on the LCD 14 the map screen in which the position indicating the movement history is superimposed and displayed on the map information based on the filtered history data stored in the history data storage unit 71.
After step S14, the position specifying process is repeated until the user operates to instruct the end of the position specifying process.

[Acceleration filter processing]
Next, the acceleration filter process executed in step S6 of the position specifying process will be described.
FIG. 9 is a flowchart illustrating the flow of the acceleration filter process.
In step S21, the first filter processing unit 54 acquires the positioning information of the time-series two points a and b to be processed.

In step S22, the first filter processing unit 54 determines whether or not the speed at the point b is less than or equal to the first threshold value. The first threshold value is a low speed value (for example, 2 km/h) at which it can be estimated that the speed at the point b is substantially zero.
When the speed at the point b is equal to or lower than the first threshold value, YES is determined in step S22 and the process proceeds to step S23.
On the other hand, when the speed at the point b is not equal to or lower than the first threshold value, NO is determined in step S22 and the process proceeds to step S24.

In step S23, the first filter processing unit 54 sets the speed at point b to zero.
After step S23, the positioning information to be processed is transited to the following two points, and the process proceeds to step S21.
In step S24, the first filter processing unit 54 determines whether or not the time interval between points a and b is equal to or greater than the time interval reference Sa.
If the time interval between points a and b is not equal to or greater than the time interval reference Sa, NO is determined in step S24 and the process proceeds to step S25.
On the other hand, when the time interval between the points a and b is equal to or greater than the time interval reference Sa, YES is determined in step S24 and the process proceeds to step S26.

In step S25, the first filter processing unit 54 calculates the converted speed difference V as the converted speed difference V=(speed at point b−speed at point a)/S.
In step S26, the first filter processing unit 54 calculates the converted speed difference V as the converted speed difference V=(speed at point b−0)/S. That is, in step S26, when the positioning loss continues for a long time, the degree of speed increase (acceleration) at point b is evaluated by comparison with zero.

In step S27, the first filter processing unit 54 determines whether the converted speed difference V is greater than or equal to the converted speed value Va. The process of step S27 corresponds to determining whether or not the positioning information at the point b is an incorrect value from the viewpoint of acceleration.
If the converted speed difference V is not equal to or larger than the converted speed value Va, NO is determined in step S27 and the process proceeds to step S21.
On the other hand, when the converted speed difference V is greater than or equal to the converted speed value Va, YES is determined in step S21 and the process proceeds to step S28.

In step S28, the first filter processing unit 54 deletes point b as an abnormal value from the history data.
In step S29, the first filter processing unit 54 determines whether or not the return condition to the position specifying processing is satisfied. The condition for returning to the position specifying process is, for example, when the history data stored in the history data storage unit 71 is processed ex post, the final data to be processed (activity unit or data for one day, etc.). End), that is, when processing positioning information in real time, when processing each block of data temporarily stored in a buffer of a predetermined size, when processing the final data to be processed ( That is, the end of the block of data stored in the buffer). Further, when the positioning information is processed in real time and the data is not stored in the buffer (the processing is performed every time the positioning information is input), in step S29, the return condition to the position specifying processing is satisfied. Is determined to be satisfied.
If the return condition to the position specifying process is not satisfied, NO is determined in step S29, the positioning information of the process target is transited to the next two points, and the process proceeds to step S21.
On the other hand, if the return condition to the position specifying process is satisfied, YES is determined in step S29 and the process returns to the position specifying process.

[Loss extension filter processing]
Next, the loss extension filter process executed in step S9 of the position specifying process will be described.
FIG. 10 is a flowchart illustrating the flow of loss extension filter processing.
In step S41, the second filter processing unit 55 acquires one piece of positioning information. Here, the positioning information is to be acquired at a predetermined interval (for example, 0.1 second interval), and in step S41, a process of sequentially acquiring the positioning information to be acquired at the predetermined interval for each loop is performed. Done.

In step S42, the second filter processing unit 55 determines whether or not there is a defect in the acquisition of positioning information.
If there is no loss in the acquisition of positioning information, NO is determined in step S42, and the process proceeds to step S43.
On the other hand, if there is a loss in the acquisition of positioning information, YES is determined in step S42 and the process proceeds to step S44.

In step S43, the second filter processing unit 55 stores the acquired positioning information as history data, and the process proceeds to step S50.
In step S44, the second filter processing unit 55 counts up the missing period of the positioning information.

In step S45, the second filter processing unit 55 determines whether or not the loss period has ended.
If the loss period has not ended, NO is determined in step S45, and the process proceeds to step S44.
On the other hand, when the loss period ends, YES is determined in step S45 and the process proceeds to step S46.

In step S46, the second filter processing unit 55 determines whether or not the length S of the loss period is greater than or equal to the loss threshold value Se. The process of step S46 corresponds to determining that the positioning result after a certain loss period is an incorrect value.
If the length S of the loss period is not greater than or equal to the loss threshold Se, NO is determined in step S46, and the process proceeds to step S50.
When the length S of the loss period is equal to or greater than the loss threshold Se, YES is determined in step S46 and the process proceeds to step S47.
In step S47, the second filter processing unit 55 sets a loss extension period (=loss period×loss extension rate X).

In step S48, the second filter processing unit 55 determines whether or not the loss extension period has elapsed.
When the loss extension period has not elapsed, NO is determined in step S48 and the process proceeds to step S49.
On the other hand, when the loss extension period has elapsed, YES is determined in step S48 and the process proceeds to step S50.

In step S49, the second filter processing unit 55 deletes the positioning information acquired in the loss extension period from the history data, transitions the positioning information of the processing target to the next point, and the process returns to step S48.
In step S50, the second filter processing unit 55 determines whether or not the return condition to the position specifying processing is satisfied. The condition for returning to the position specifying process is, for example, when the history data stored in the history data storage unit 71 is processed ex post, the final data to be processed (activity unit or data for one day, etc.). End), that is, when processing positioning information in real time, when processing each block of data temporarily stored in a buffer of a predetermined size, when processing the final data to be processed ( That is, the end of the block of data stored in the buffer). Further, when the positioning information is processed in real time and the data is not stored in the buffer (the processing is performed every time the positioning information is input), in step S50, the return condition to the position specifying processing is satisfied. Is determined to be satisfied.
If the return condition to the position identification processing is not satisfied, NO is determined in step S50, the positioning information of the processing target is transited to the next point, and the processing proceeds to step S41.
On the other hand, if the return condition to the position specifying process is satisfied, YES is determined in step S50 and the process returns to the position specifying process.

[Positioning context filtering]
Next, the positioning context filtering process executed in step S12 of the position specifying process will be described.
FIG. 11 is a flowchart illustrating the flow of the positioning context filtering process.
In step S61, the third filter processing unit 56 acquires the latitude and longitude and the positioning time for the three time-series points a, b, and c to be processed.
In step S62, the third filter processing unit 56 calculates the time interval h1 between the points a and b and the time interval h2 between the points b and c.

In step S63, the third filter processing unit 56 determines that the time interval h1 between the points a and b is equal to or longer than the time interval reference hd, or the time interval h2 between the points b and c is the time. It is determined whether the distance is equal to or longer than the interval reference hd.
In step S63, if the time interval h1 between the points a and b is the time interval reference hd or more, or the time interval h2 between the points b and c is the time interval reference hd or more, the step When YES is determined in S63, the process proceeds to step S70.
On the other hand, in step S63, if the time interval h1 between the points a and b is not greater than the time interval reference hd and the time interval h2 between the points b and c is not greater than the time interval reference hd, then step S63 When NO is determined in S63, the process proceeds to step S64.

In step S64, the third filter processing unit 56 calculates the return distance R (the distance between the points a and c obtained from the latitude and longitude).
In step S65, the third filter processing unit 56 determines whether or not the return distance R is less than or equal to the return radius Rn.
If the return distance R is not equal to or less than the return radius Rn, NO is determined in step S65, and the process proceeds to step S70.
On the other hand, if the return distance R is less than or equal to the return radius Rn, YES is determined in step S65 and the process proceeds to step S66.

In step S66, the third filter processing unit 56 calculates the adjacent distance L between the points a and b (the distance between the points a and b obtained from the latitude and longitude).
In step S67, the third filter processing unit 56 calculates the adjacent conversion speed Vm (=L/h1). Further, at this time, the adjacent conversion speed Vm is configured to calculate the speed when moving from the point a to the point b, but is configured to calculate the moving speed when moving from the point b to the point c and use it for the determination. May be.
In step S68, the third filter processing unit 56 determines whether or not the converted speed value Vd is Vm or less. The process of step S68 corresponds to determining that the jump of the sudden positioning result is an invalid value.
When the converted speed value Vd is not less than or equal to the adjacent converted speed Vm, NO is determined in step S68 and the process proceeds to step S70.
On the other hand, when the converted speed value Vd is not less than or equal to the adjacent converted speed Vm, YES is determined in step S68 and the process proceeds to step S69.

In step S69, the third filter processing unit 56 deletes point b as an abnormal value from the history data.
That is, the points b are deleted from the history data in the case of “high speed” and “returning close” according to the determination in steps S63 and S68.
In step S70, the third filter processing unit 56 determines whether or not the return condition for the position identification processing is satisfied. The condition for returning to the position specifying process is, for example, when the history data stored in the history data storage unit 71 is processed ex post, the final data to be processed (activity unit or data for one day, etc.). End), that is, when processing positioning information in real time, when processing each block of data temporarily stored in a buffer of a predetermined size, when processing the final data to be processed ( That is, the end of the block of data stored in the buffer). Further, when the positioning information is processed in real time and the data is not stored in the buffer (the processing is performed each time the positioning information is input), in step S70, the return condition to the position specifying processing is satisfied. Is determined to be satisfied.
If the return condition to the position specifying process is not satisfied, NO is determined in step S70, the positioning information of the process target is transited to the following three points, and the process proceeds to step S61.
On the other hand, if the return condition to the position specifying process is satisfied, YES is determined in step S70 and the process returns to the position specifying process.

By such processing, it is possible to appropriately exclude an abnormal value in GPS positioning information and specify a more accurate position.
FIG. 12 is a schematic diagram showing an example in which the position of the user is displayed by the history data (unprocessed history data) before the filtering process by the position specifying process is performed.
In the example shown in FIG. 12, history data including an abnormal value of acceleration, inaccurate position information acquired after the loss period, and an error such as movement that is not possible as the behavior of the user is displayed.

FIG. 13 is a schematic diagram showing an example in which the position of the user is displayed by the history data after the filtering process by the position specifying process is performed.
In the example shown in FIG. 13, an abnormal value of acceleration, inaccurate position information acquired after the loss period, and an error such as movement that cannot be performed as a user's action causes an acceleration filter, a loss extension filter, and a positioning context filter. The historical data is being properly filtered out and limited to more accurate ones.
The process of excluding the abnormal value in the positioning information is performed by referring to the history data stored in the history data storage unit 71 so that the wrist terminal 1 is sufficiently supplied with power (such as during charging), It is possible to disperse the processing load over time and perform it in a situation where positioning is not performed.

[Parameter control processing]
Next, the parameter control process will be described.
FIG. 14 is a flowchart illustrating the flow of parameter control processing executed by the wrist terminal 1 of FIG. 1B having the functional configuration of FIG.
The parameter control process is started by the user performing an operation for instructing the start of the parameter control process.

In step S81, the parameter control unit 57 acquires the data referred to as the correct answer in the parameter control process. Here, the data referred to as the correct answer is, for example, teacher data in which the actual position is separately known, or data in which the position having a certain validity is estimated by map matching (route fitting) or the like.
In step S82, the parameter control unit 57 acquires the history data after the filtering process by the position specifying process.

In step S83, the parameter control unit 57 calculates an error between the data referred to as the correct answer and the history data after the filtering process.
In step S84, the parameter control unit 57 feeds back the calculated error and adjusts the parameter in each filter.
In step S85, the parameter control unit 57 stores the adjusted parameter in the parameter storage unit 72.

In step S86, the parameter control unit 57 uses the adjusted parameter in each filter to perform the position specifying process on the unprocessed data stored in the history data storage unit 71.
After step S86, the parameter control process ends.
With this, the position specifying process can be redone using the adjusted more appropriate parameter, and thus the more accurate position can be specified.

[Modification 1]
In the above-described embodiment, in addition to the acceleration filter process, the loss extension filter process, and the positioning context filter process, a submersion detection filter process for detecting that the wrist terminal 1 is submerged may be executed.
FIG. 15 is a functional block diagram showing a functional configuration of the wrist terminal 1 for executing the submersion detection filter process.

The submersion detection filter process is a series of processes for detecting that the wrist terminal 1 is submerged when the user's activity is surfing or paddle and deleting the positioning information during the submersion from the history data. ..
When the submersion detection filter processing is executed, the fourth filter processing unit 60 functions in addition to the functional configuration shown in FIG.
When the filter selection unit 53 determines that the submersion detection filter is used, the fourth filter processing unit 60 uses the parameters selected by the filter selection unit 53 to perform the filtering process by the submersion detection filter.

The submersion detection filter is a filter for detecting that the wrist terminal 1 is submerged by utilizing that the altitude shows an abnormal value before and after the loss period when the wrist terminal 1 is submerged and the positioning information is lost. Is.
FIG. 16 is a flowchart illustrating the flow of submersion detection filter processing.
The submersion detection filter process is executed as a final stage filter process when the user's action is determined to be surfing or paddle in the position specifying process.
In step S91, the fourth filter processing unit 60 acquires positioning information.

In step S92, the fourth filter processing unit 60 determines whether or not the altitude initial value A0 has been set.
If the initial altitude value A0 has not been set, NO is determined in step S92, and the process proceeds to step S93.
On the other hand, when the initial value A0 of altitude has already been set, YES is determined in step S92 and the process proceeds to step S95.

In step S93, the fourth filter processing unit 60 determines whether or not a predetermined number (five in this case) of positioning information has been acquired after starting positioning.
If a predetermined number of pieces of positioning information have not been acquired after the positioning is started, NO is determined in step S93, and the process proceeds to step S91.
On the other hand, if a predetermined number of pieces of positioning information are acquired after the positioning is started, YES is determined in step S93, and the process proceeds to step S94.

In step S94, the fourth filter processing unit 60 sets the reference initial altitude value A0.
The initial value A0 of the altitude is an average value of the altitudes of the predetermined number of positioning information excluding the maximum value and the minimum value when the standard deviation of the predetermined number of positioning information is 15 [m] or more. .. Further, the initial value A0 of the altitude is an average value of the altitudes of the predetermined number of positioning information when the standard deviation of the predetermined number of positioning information is less than 15 [m].
After step S94, the process proceeds to step S91.

In step S95, the fourth filter processing unit 60 calculates, as the current altitude An, the average of the altitudes of the predetermined number (five in this case) of the positioning information acquired most recently.
In step S96, the fourth filter processing unit 60 determines whether or not the difference between the current altitude An and the initial altitude value A0 is equal to or greater than the altitude difference threshold value (for example, 40 [m]).
When the difference between the current altitude An and the initial altitude value A0 is equal to or greater than the threshold value of the altitude difference, YES is determined in step S96 and the process proceeds to step S97.
On the other hand, when the difference between the current altitude An and the initial value A0 of the altitude is not equal to or more than the threshold value of the altitude difference, NO is determined in step S96 and the process proceeds to step S98.

In step S97, the fourth filter processing unit 60 determines that the current altitude An is an abnormal value and deletes the current positioning information from the history data.
In step S98, the fourth filter processing unit 60 determines whether or not the return condition for the position identification processing is satisfied. The condition for returning to the position specifying process is, for example, when the history data stored in the history data storage unit 71 is processed ex post, the final data to be processed (activity unit or data for one day, etc.). End), that is, when processing positioning information in real time, when processing each block of data temporarily stored in a buffer of a predetermined size, when processing the final data to be processed ( That is, the end of the block of data stored in the buffer). Further, when the positioning information is processed in real time and the data is not stored in the buffer (the processing is performed every time the positioning information is input), the return condition to the position identification processing is determined in step S98. Is determined to be satisfied.
If the return condition to the position specifying process is not satisfied, NO is determined in step S98, and the process proceeds to step S91.
On the other hand, when it is the final data to be processed, YES is determined in step S98 and the process returns to the position specifying process.
As a result, it is possible to suppress the positioning disturbance that occurs after the submersion period.

[Modification 2]
In the above-described embodiment, when the parameter is updated by the parameter control unit, the position specifying process may be executed again to specify a more suitable position. For example, in the activity performed on one day, the history data of the position specified by the position specifying process can be stored as temporary history data. Then, the parameter control process is executed at a timing such as midnight, and the position specifying process is executed using the updated parameters, whereby the position in the activity on the day can be updated to a more appropriate position. The series of parameter control processing and position specifying processing may be executed by the server or the like to which the history data is uploaded from the wrist terminal 1.

[Modification 3]
In the above-described embodiment, when it is desired to display the position identification result in real time, not the result of applying all the filters but the result of the acceleration filter, the result of the loss extension filter, and the result of the positioning context filter depending on the display mode. It is also possible to select and display any one of the stages.

[Modification 4]
In the above-described embodiment, the case where the number of pieces of positioning information to be determined by the positioning context filter is two has been described as an example, but the present invention is not limited to this. That is, the number of pieces of positioning information to be determined by the positioning context filter can be increased (eight, etc.).
When there are two pieces of positioning information to be determined by the positioning context filter, they can be displayed with near real-time property (sequentiality suppressed by a short delay).
On the other hand, when the number of pieces of positioning information to be determined by the positioning context filter is increased, it is possible to perform post-filter processing by giving priority to high accuracy regardless of real-time property.
When the number of pieces of positioning information to be determined by the positioning context filter is set to be larger, the action radius and the statistics are calculated using a predetermined number (for example, four before and after) of the positioning information before and after the time series with respect to the positioning information of interest. Set a specific activity range (adjacent activity circle). For example, of the predetermined number of positioning information before and after the time series, the one having the largest mutual distance is set as the diameter, and the adjacent active circle having the half radius as the action radius is set. If a round trip that exceeds the action radius in a short time (for example, a round trip to a distance that is three times the action radius or more) is performed on the adjacent activity circle, it is impossible for the user to act. , Presumed to be an outlier.
In addition, the selection ratio of the position information that is temporally before and after the position information used to set the adjacent active circle may be adjusted depending on the display mode of the position information, and the position information that is sequentially acquired is stored in a buffer and the quasi real time is stored. When the position information is displayed on the display device, a predetermined number before and after the time series of the positioning information of interest may be selected, for example, at a ratio of three from the previous time point and one from the later time point. Of course, with such a configuration, it is possible to display a highly accurate trajectory almost in parallel with real-time GPS positioning.
Further, the adjacent activity circle may be set by using only the position information acquired after the position information of interest as the position information of the determination target used in the process of determining the position information of interest.

[Modification 5]
In the above embodiment, the setting of the positioning context filter can be adaptively changed according to various conditions.
For example, the number of pieces of positioning information to be determined by the positioning context filter can be changed according to various situations of the user (type of action, positioning environment, etc.) and various needs (reduction of calculation amount, etc.).
As an example, the number of pieces of positioning information to be determined by the positioning context filter can be increased or decreased depending on whether the user is cycling or performing daily activities. In addition, the number of pieces of positioning information to be determined by the positioning context filter can be increased or decreased according to the remaining battery power or the processing load of the wrist terminal 1.
Further, in the above-described embodiment, the method of selecting the positioning information to be determined by the positioning context filter is changed according to the user's various situations (behavior type, positioning environment, etc.) and various needs (reduction in the amount of calculation, etc.). be able to.
Here, the positioning information selection method means which of the preceding and following positioning information is selected with respect to the positioning information of interest, and for example, a predetermined number of preceding and following positioning information is selected, or attention is paid. There is a method of selecting positioning information, such as selecting more positioning information after the positioning information than the previous positioning information, or conversely selecting more positioning information before the positioning information of interest than later positioning information. It is possible.
Also in this case, as an example, the method of selecting the positioning information to be determined by the positioning context filter can be changed according to whether the user is cycling or performing daily activities. Further, the method of selecting the positioning information to be determined by the positioning context filter can be changed according to the remaining battery power and the processing load of the wrist terminal 1.

[Modification 6]
In the above embodiment, the case where the present invention is applied to the positioning information of GPS has been described as an example, but the present invention is not limited to this. That is, the present invention can be applied to the case where the position information based on the network location is also used in addition to the GPS positioning information. For example, when the network location of the Wi-Fi router is used, a situation may occur in which the positioning position instantaneously transits to and returns to a foreign country. Even in such a situation, the effect of the present invention is obtained. be able to.

[Modification 7]
In the above-described embodiment, the positioning information in the activities of a large number of users is aggregated in the server, and in the map information in which no route is set, a substantial route (virtual route) is set to perform map matching (route fitting). It can be carried out. For example, a virtual route can be set for a lift route at a ski resort, and map matching (route fitting) can be performed to specify the position with higher accuracy. Furthermore, the parameter of the filter can be adjusted by executing the parameter control process using the information of this virtual route.

The wrist terminal 1 configured as described above includes the positioning information acquisition unit 51 and the second filter processing unit 55.
The positioning information acquisition unit 51 acquires a series of position information of the user.
The second filter processing unit 55 detects, in the series of position information acquired by the positioning information acquisition unit 51, whether or not there is a missing portion where the position information is missing for a predetermined time or a predetermined number of times of measurement.
When a defective portion is detected, the second filter processing unit 55 identifies the defective portion and a portion corresponding to a predetermined time or a predetermined number of measurement times from the defective portion as a portion not suitable for display in the series of position information. ..
As a result, it is possible to suppress the positioning disturbance that occurs immediately after the missing portion.
Therefore, the suitability determination of the position information of the user can be made more accurate.

The wrist terminal 1 includes a recording control unit 59.
The recording control unit 59 outputs a series of position information in which a portion unsuitable for display is specified to the outside.
This makes it possible to use the result of the determination as to whether or not the user's position information is appropriate, in a device other than the wrist terminal 1.

The recording control unit 59 outputs the data excluding a portion unsuitable for display in the series of position information to the outside.
As a result, only devices suitable for the user's position information can be provided to devices other than the wrist terminal 1.

The second filter processing unit 55 makes variable the length of the period in which the position information after the missing portion is not output to the outside.
As a result, it is possible to set the period in which the position information after the loss portion is not output to the outside to an appropriate period according to the situation.

The second filter processing unit 55 lengthens the length of the period in which the position information after the loss portion is not output to the outside, as the length of the detected loss portion is longer.
Accordingly, it is possible to more appropriately set the period in which the position information after the loss portion is not output to the outside according to the magnitude of the influence of the loss portion.

The second filter processing unit 55 sets a period in which the position information after the missing portion is not output to the outside when the detected missing portion is equal to or more than the set threshold value.
This makes it possible to set a period in which the position information after the loss portion is not output to the outside only when the influence of the loss portion substantially occurs.

The second filter processing unit 55 discards or invalidates the position information acquired by the positioning information acquisition unit 51 and outputs the position information after the lost portion to the outside during a period in which the position information after the lost portion is not output to the outside. After the non-output period has elapsed, the position information acquired by the positioning information acquisition unit 51 is retained.
With this, it is possible to suppress the position information acquired after the position information after the loss portion is not output to the outside, and to output the position information after the loss portion to the outside, Appropriate position information can be output to the outside.

It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within the scope of achieving the object of the present invention are included in the present invention.
For example, in the above-described embodiment, when the positioning information is deleted from the history data by each filter, it is possible to delete the data, invalidate the data, or the like.
Further, in the above-described embodiment, the case where the loss threshold Se is set for each type of activity in the loss extension filter has been described as an example, but this loss threshold Se may be changed according to the position and time. ..
Further, in the above-described embodiment, the determining unit that determines the suitability of the positioning information is configured by various filtering processes executed by the control unit 11 of the wrist terminal 1, but the present invention is not limited to this. That is, the determiner corresponding to each filter may be configured by hardware, and the wrist terminal 1 may perform the process using the output results of these determiners.

Further, in the above-described embodiment, in the loss extension filter processing, a portion where the positioning information is lost (a lost portion) can be referred to from various viewpoints as the acquisition status of the positioning information. That is, as the missing portion, it is possible to refer to the time when the positioning information is not acquired (length of the missing time), and the number of times the positioning information is not acquired. Further, in response to this, when deleting the positioning information from the history data, it is possible to set the loss extension period (time) and also set the loss extension count.

Further, in the above-described embodiment, the wrist terminal is described as an example of the electronic device to which the present invention is applied, but the electronic device is not limited to this.
For example, the present invention can be applied to general electronic devices having a function of measuring a position. Specifically, for example, the present invention is applicable to notebook personal computers, tablet terminals, video cameras, portable navigation devices, mobile phones, smartphones, portable game machines, and the like.

Further, in the above-described embodiment, the control unit 11 inside the wrist terminal 1 controls the operations shown in the flowcharts of FIGS. 8 to 11 and 14, but sends data to a smartphone or the like via the wireless communication module 21. It is also possible to perform the arithmetic processing with a smartphone, return the result to the wrist terminal 1, and display it on the LCD 14.
Further, in the above-described embodiment, various data is recorded in the RAM 17 or the removable medium 31 inside the wrist terminal 1, but the data may be transmitted to the smartphone or the like via the wireless communication module 21 and recorded in the smartphone or the like. You can
That is, the position specifying system can be configured by distributing and implementing the above-described function of the wrist terminal 1 in a plurality of electronic devices. In this case, the functions corresponding to the wrist terminal 1 that executes the position specifying process can be realized by the cooperation of the electronic devices having various functions.

The series of processes described above can be executed by hardware or software.
In other words, the functional configuration of FIG. 2 is merely an example and is not particularly limited. That is, it is sufficient if the wrist terminal 1 is provided with a function capable of executing the above-described series of processing as a whole, and what kind of functional block is used to realize this function is not particularly limited to the example of FIG.
Further, one functional block may be configured by hardware alone, software alone, or a combination thereof.
The functional configuration according to the present embodiment is realized by a processor that executes arithmetic processing, and a processor that can be used in the present embodiment is configured by a single processing device such as a single processor, a multiprocessor, and a multicore processor. In addition to the above, it includes a combination of these various processing devices and a processing circuit such as an ASIC (Application Specific Integrated Circuit) and an FPGA (Field-Programmable Gate Array).

When the series of processes is executed by software, the program forming the software is installed in a computer or the like from a network or a recording medium.
The computer may be a computer embedded in dedicated hardware. Further, the computer may be a computer capable of executing various functions by installing various programs, for example, a general-purpose personal computer.

The recording medium including such a program is not only configured by the removable medium 31 of FIG. 1 which is distributed separately from the apparatus main body to provide the program to the user, but is also installed in the apparatus main body in advance. It is composed of a recording medium and the like provided to. The removable medium 31 is composed of, for example, a magnetic disk (including a floppy disk), an optical disk, a magneto-optical disk, or the like. The optical disc is, for example, a CD-ROM (Compact Disc-Read Only Memory) or a DVD (Digital).
Versatile Disc), Blu-ray (registered trademark) Disc (Blu-ray Disc), and the like. The magneto-optical disk is composed of MD (Mini-Disc) or the like. Further, the recording medium provided to the user in a state of being pre-installed in the apparatus main body is constituted by, for example, the ROM 16 or the like in FIG. 1 in which a program is recorded.

In the present specification, the steps for writing the program recorded in the recording medium include, not only the processing performed in time series according to the order, but also the processing performed in parallel or individually, not necessarily in time series. It also includes the processing to be performed.

Although some embodiments of the present invention have been described above, these embodiments are merely examples and do not limit the technical scope of the present invention. The present invention can take various other embodiments, and various modifications such as omission and replacement can be made without departing from the scope of the present invention. These embodiments and modifications thereof are included in the scope and gist of the invention described in the present specification and the like, and are also included in the invention described in the claims and the scope equivalent thereto.

The inventions described in the claims at the initial application of the present application will be additionally described below.
[Appendix 1]
Position information acquisition means for acquiring a series of position information of the user,
In the series of position information acquired by the position information acquisition means, a detection means for detecting whether or not the position information is missing for a predetermined time or a predetermined number of times of measurement,
When the detecting unit detects the defective portion, a specifying unit that specifies, in the series of position information, the defective portion and a portion corresponding to a predetermined time or a predetermined number of measurement times from the defective portion as a portion not suitable for display. When,
An electronic device comprising:
[Appendix 2]
The electronic device according to appendix 1, further comprising an output unit that outputs the series of position information in which a portion unsuitable for display is identified by the identifying unit to the outside.
[Appendix 3]
3. The electronic device according to appendix 2, wherein the output means outputs data excluding a portion not suitable for display in the series of position information to the outside.
[Appendix 4]
4. The electronic device according to appendix 2 or 3, wherein the specifying unit varies a length of a period in which the position information after the defective portion is not output to the outside.
[Appendix 5]
From the appendix 2, the specifying unit lengthens the length of a period in which the positional information after the defective portion is not output to the outside, as the length of the defective portion detected by the detecting unit is longer. 4. The electronic device according to any one of 4.
[Appendix 6]
Note 2 wherein the specifying means sets a period during which the position information after the missing portion is not output to the outside when the missing portion detected by the detecting means is equal to or more than a set threshold value. 5. The electronic device according to any one of items 1 to 5.
[Appendix 7]
The identifying means is
In a period in which the position information after the defective portion is not output to the outside, the position information acquired by the position information acquisition unit is discarded or invalidated,
7. The position information acquired by the position information acquisition unit is held after a lapse of a period in which the position information after the defective portion is not output to the outside, according to any one of appendices 1 to 6. Electronics.
[Appendix 8]
Including a first electronic device and a second electronic device,
At least one of the first electronic device and the second electronic device,
Position information acquisition means for acquiring a series of position information of the user,
In the series of position information acquired by the position information acquisition means, a detection means for detecting whether or not the position information is missing for a predetermined time or a predetermined number of times of measurement,
When the detecting unit detects the defective portion, a specifying unit that specifies, in the series of position information, the defective portion and a portion corresponding to a predetermined time or a predetermined number of measurement times from the defective portion as a portion not suitable for display. When,
A position specifying system comprising:
[Appendix 9]
A location identification method performed by an electronic device,
A position information acquisition step of acquiring a series of position information of the user,
In the series of position information acquired in the position information acquisition step, a detection step of detecting whether or not the position information is missing for a predetermined time or a predetermined number of times of measurement,
When the missing portion is detected in the detecting step, a specifying step of specifying the missing portion and a portion corresponding to a predetermined time or a predetermined number of measurement times from the missing portion in the series of position information as a portion not suitable for display When,
A position specifying method comprising:
[Appendix 10]
On the computer,
A position information acquisition function that acquires a series of position information of the user,
In the series of position information acquired by the position information acquisition function, a detection function of detecting whether or not there is a defective portion where the position information is missing for a predetermined time or a predetermined number of times of measurement,
A specific function for identifying the defective portion and a portion corresponding to a predetermined time or a predetermined number of measurement times from the defective portion in the series of position information as a portion not suitable for display when the defective portion is detected by the detection function When,
A program characterized by realizing.

1... wrist terminal, 11... control unit, 12... sensor unit, 13... input unit, 14... LCD, 15... clock circuit, 16... ROM, 17... RAM, 18... GPS antenna, 19... GPS module, 20... Wireless communication antenna, 21... Wireless communication module, 22... Drive, 31... Removable media, 51... -Positioning information acquisition unit, 52... Behavior determination unit, 53... Filter selection unit, 54... First filter processing unit, 55... Second filter processing unit, 56... Third filter processing 57... Parameter control section, 58... Display control section, 59... Recording control section, 60... Fourth filter processing section, 71... History data storage section, 72... Parameter Storage unit, 73... Map information storage unit

In order to achieve the above object, an electronic device of one embodiment of the present invention is
Position information acquisition means for acquiring a series of position information of the user,
Judgment means for judging whether or not there is a deficient portion for a predetermined time or a predetermined number of times of measurement in the series of position information acquired by the position information acquisition means,
When it is determined by the determination means that there is the missing portion, in the series of position information, specifying means for specifying the missing portion ,
Variable means for varying the length of the period corresponding to the positional information of the portion not suitable for display adjacent to the defective portion,
A process of processing the positional information of the defective portion specified by the specifying unit and the position information of the portion whose length of the period is changed by the changing unit and which is not suitable for display, after processing the position information as inappropriate for display. And means .

Claims (14)

Position information acquisition means for acquiring a series of position information of the user,
Judgment means for judging whether or not there is a deficient portion for a predetermined time or a predetermined number of times of measurement in the series of position information acquired by the position information acquisition means,
When it is determined by the determination means that there is the defective portion, a predetermined portion including the defective portion and a portion adjacent to the defective portion in the series of position information is specified as a portion not suitable for display, and Specifying means for varying the length of the period in which the position information after the defective portion is not output to the outside,
An electronic device comprising: an output unit that outputs the series of position information in which a portion unsuitable for display is identified by the identifying unit to the outside. The specifying means displays a predetermined portion in the series of position information, including the defective portion and a portion adjacent to the defective portion and based on a period in which the determining means determines that the defective portion is present. The electronic device according to claim 1, wherein the electronic device is specified as an unsuitable part. In the series of position information, the specifying unit displays a predetermined portion including the defective portion and a portion that is adjacent to the defective portion and is based on the number of times the determination unit determines that the defective portion is present. The electronic device according to claim 1 or 2, wherein the electronic device is specified as a part that is not suitable for. The electronic device according to any one of claims 1 to 3, wherein the output unit outputs data excluding a portion not suitable for display in the series of position information to the outside. 2. The specifying unit increases the length of a period in which the position information after the loss portion is not output to the outside, as the length of the loss portion determined by the determination unit is longer. 5. The electronic device according to any one of items 4 to 4. Position information acquisition means for acquiring a series of position information of the user,
Judgment means for judging whether or not there is a deficient portion for a predetermined time or a predetermined number of times of measurement in the series of position information acquired by the position information acquisition means,
When the determination unit determines that there is the missing portion, a specifying unit that specifies a predetermined portion including the missing portion and a portion adjacent to the missing portion as a portion that is not suitable for display in the series of position information. When,
An output unit that outputs the series of position information in which a portion not suitable for display is specified by the specifying unit to the outside,
An electronic device, wherein the specifying unit sets a period during which the position information after the loss portion is not output to the outside when the loss portion determined by the determination unit is equal to or more than a set threshold value. .. The identifying means is
In a period in which the position information after the defective portion is not output to the outside, the position information acquired by the position information acquisition unit is discarded or invalidated,
7. The position information acquired by the position information acquisition unit is retained after a lapse of a period in which the position information after the defective portion is not output to the outside, according to any one of claims 1 to 6. Electronics. Including a first electronic device and a second electronic device,
At least one of the first electronic device and the second electronic device, position information acquisition means for acquiring a series of position information of the user,
Of the series of position information acquired by the position information acquisition unit position information is a predetermined time or a predetermined number of times of measurement, and a determination unit that determines whether or not there is a defective portion,
When it is determined by the determination means that there is the defective portion, in the series of position information, a predetermined portion including the defective portion and a portion adjacent to the defective portion is specified as a portion not suitable for display, and Specifying means for varying the length of the period in which the position information after the defective portion is not output to the outside,
An output unit that outputs the series of position information in which a portion unsuitable for display is specified by the specifying unit to the outside. Including a first electronic device and a second electronic device,
At least one of the first electronic device and the second electronic device, position information acquisition means for acquiring a series of position information of the user,
Of the series of position information acquired by the position information acquisition unit position information is a predetermined time or a predetermined number of times of measurement, and a determination unit that determines whether or not there is a defective portion,
When the determination unit determines that there is the missing portion, a specifying unit that specifies a predetermined portion including the missing portion and a portion adjacent to the missing portion as a portion that is not suitable for display in the series of position information. When,
An output unit that outputs the series of position information in which a portion not suitable for display is specified by the specifying unit to the outside,
The specifying means sets a period during which the position information after the loss portion is not output to the outside when the loss portion determined by the determination means is equal to or more than a set threshold value. A characteristic position identification system. When the determining unit determines that the defective portion is present, the specifying unit is a portion that is not suitable for displaying a predetermined portion including the defective portion and a portion adjacent to the defective portion in the series of position information. The position specifying system according to claim 8 or 9, characterized by: A method for position identification performed by an electronic device,
A position information acquisition step of acquiring a series of position information of the user,
Of the series of position information acquired in the position information acquisition step, the determination step of determining whether or not the position information is missing for a predetermined time or a predetermined number of times of measurement,
When it is determined by the determination step that the missing portion is present, in the series of position information, a predetermined portion including the missing portion and a portion adjacent to the missing portion is specified as a portion not suitable for display, and A specific step of varying the length of the period in which the position information after the defective portion is not output to the outside,
An output step of outputting to the outside the series of position information in which a portion unsuitable for display is specified by the specifying step. A location identification method performed by an electronic device,
A position information acquisition step of acquiring a series of position information of the user,
Of the series of position information acquired in the position information acquisition step, the determination step of determining whether or not the position information is missing for a predetermined time or a predetermined number of times of measurement,
When it is determined by the determination step that there is the missing portion, a specifying step of specifying a predetermined portion including the missing portion and a portion adjacent to the missing portion as a portion not suitable for display in the series of position information. When,
An output step of outputting the series of position information in which a portion unsuitable for display is specified by the specifying step to the outside,
The specifying step is characterized by setting a period during which the position information after the loss portion is not output to the outside when the loss portion determined by the determination step is equal to or more than a set threshold value. Characteristic location identification method. On the computer,
A position information acquisition function that acquires a series of position information of the user,
A determination function of determining whether or not there is a defective portion where the positional information is missing for a predetermined time or a predetermined number of times of measurement of the series of positional information acquired by the positional information acquisition function,
When it is determined by the determination function that there is the missing portion, in the series of position information, the predetermined portion including the missing portion and a portion adjacent to the missing portion is specified as a portion not suitable for display, and A specific function of varying the length of a period in which the position information after the defective portion is not output to the outside,
A program that realizes an output function of outputting the series of position information in which a portion unsuitable for display is specified by the specifying function to the outside. On the computer,
A position information acquisition function that acquires a series of position information of the user,
A determination function of determining whether or not there is a defective portion where the positional information is missing for a predetermined time or a predetermined number of times of measurement of the series of positional information acquired by the positional information acquisition function,
When it is determined by the determination function that the defective portion is present, a specific function of specifying a predetermined portion including the defective portion and a portion adjacent to the defective portion as a portion not suitable for display in the series of position information. When,
The specific function realizes an output function of outputting the series of position information in which a portion not suitable for display is specified,
A program, wherein the specific function sets a period during which the position information after the lost portion is not output to the outside when the lost portion determined by the determination function is equal to or more than a set threshold value.

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