JP2022056426A - Information processing device, method, and program - Google Patents

Abstract

To provide an information processing device, a method, and a program capable of determining right or left of a landing foot stably.SOLUTION: An information processing device 1 includes: an inertial sensor part for measuring data on a direction of a rotation motion of a user's body; and a control part for executing first landing determination processing for acquiring data on a roll component, which is a rotation component around an advancing direction of the waist of the user, from the data on the direction of the rotation motion of the user's body measured by the inertial sensor part when a timing of the user's landing is detected, and determining whether the user's foot that has landed is a right foot or a left foot on the basis of data on the rotation motion of the waist in a first period from after the landing acquired from the acquired data on the roll component, and data on the rotation motion of the waist in a second period before subsequent landing, which is different from the first period.SELECTED DRAWING: Figure 1

Description

The present invention relates to information processing devices, methods and programs.

In recent years, an increasing number of users are running and walking to maintain and improve their health. In running and walking, if you continue to exercise with an imbalance in how you use your body, it will not only be inefficient but also cause physical injury. Therefore, it is important for the user to grasp the balance of how to use the body and judge whether it is appropriate or not. For example, in order to investigate the balance of how the body is used during running, it is useful to determine whether the various events that occur during running are caused by the landing of the left or right foot. Regarding a method for determining the left and right of the landing foot, for example, Patent Document 1 discloses a technique for determining the left and right of the landing foot during running by using the rotation component of the waist measured by an inertial sensor attached to the user's waist. Has been done.

Japanese Unexamined Patent Publication No. 2011-251013

In the technique described in Patent Document 1, a rotation component (hereinafter referred to as a roll component) centered on the traveling direction of the user's waist is measured by an inertia sensor mounted at the center of the back of the waist of the user, and the roll within a certain period of time is measured. The left and right sides of the landing foot are determined based on whether the maximum rotation of the component is in the plus direction or the minus direction. However, depending on the user, the rotation of the waist when the foot is landed may not clearly appear. In this case, a erroneous determination may be made simply by looking at the direction of the maximum rotation of the roll component. Therefore, there is a problem that it is not possible to stably determine the left and right of the landing foot.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an information processing device, a method, and a program capable of stably determining the left and right of a landing foot.

In order to achieve the above object, the information processing apparatus according to the present invention is
Inertia sensor unit that measures the data of the direction of the rotation motion of the user's body,
When the landing timing of the user is detected, the roll which is a rotation component centered on the traveling direction of the user's waist is obtained from the data of the direction of the rotation motion of the user's body measured by the inertial sensor unit. The data of the component is acquired, and the data of the rotation motion of the waist in the first period after landing obtained from the acquired data of the roll component and the rotation of the waist in the second period before the next landing, which is different from the first period. A control unit that performs a first landing determination process that determines whether the user's landed foot is left or right based on motion data.
To prepare
It is characterized by that.

According to the present invention, since the left and right sides of the landing foot are determined based on the rotation motion of the waist after landing and the rotation motion of the waist before the next landing, the left and right sides of the landing foot can be stably determined.

It is a figure which shows the outline of the landing foot determination method at the time of running which concerns on embodiment of this invention, (A) is an example of use of an information processing apparatus, (B) shows the direction of the rotation motion of a user's body. .. It is a figure which shows the structure of the information processing apparatus which concerns on embodiment of this invention. It is a figure which shows an example of the waveform of the roll component which concerns on embodiment of this invention. It is a figure which shows an example of the waveform of the roll component which concerns on embodiment of this invention. It is a figure which shows an example of the waveform of the roll component which concerns on embodiment of this invention. It is a figure which shows the table of the sensor information data which concerns on embodiment of this invention. It is a figure which shows the table of the determination result data which concerns on embodiment of this invention. It is a figure which shows an example of the hardware composition of the information processing apparatus which concerns on embodiment of this invention. It is a flowchart which shows the flow of the landing foot determination process executed by the information processing apparatus which concerns on embodiment of this invention. It is a flowchart which shows the flow of the stance side determination process executed in the landing foot determination process shown in FIG. It is a flowchart which shows the flow of the swing leg side determination process which is executed in the landing foot determination process shown in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The same or corresponding parts in the figure are designated by the same reference numerals.

The information processing apparatus 1 according to the embodiment of the present invention detects the rotation component (roll component) around the traveling direction of the user's waist measured by the inertial sensor, and rotates the waist after the landing of the user's foot. It is a device that can determine the left and right of the landing foot based on the rotation motion of the waist before the next landing.

FIG. 1A shows a user who wears the information processing apparatus 1 on the back of the waist. The information processing apparatus 1 is provided with members such as a belt, a string, and a hook to be attached to the back of the user's waist. The information processing device 1 is provided with an inertial sensor unit including an acceleration sensor, a gyro sensor, a geomagnetic sensor, and the like, and can measure the direction of the rotational movement of the user's body. FIG. 1B shows the direction of the rotational movement of the user's body. The traveling direction of the running user is the + Y-axis direction, the right-hand direction orthogonal to the Y-axis is the + X-axis direction, and the head direction of the user orthogonal to the XY plane is the + Z-axis direction.

In the three axes of X, Y, and Z, the angular velocity generated in the clockwise direction toward the + direction of the acceleration of each axis is + direction. In the following, the rotation direction centered on the X-axis is referred to as a pitch, and the rotation component thereof is referred to as a pitch component. The rotation direction around the Y axis is called a roll, the rotation component is called a roll component, and the rotation direction around the Z axis is called yaw, and the rotation component is called a yaw component. do.

Subsequently, FIG. 2 shows the configuration of the information processing apparatus 1. The information processing device 1 includes an inertial sensor unit 10 that measures the direction of rotation of the user's body, an input operation unit 11 that receives various operations from the user, a storage unit 12 that stores various data, programs, and the like, and various types. A control unit 13 for performing the above processing and a display unit 14 for displaying a determination result or the like are provided.

The inertial sensor unit 10 is a sensor including an acceleration sensor, a gyro sensor, a geomagnetic sensor, and the like for measuring the direction of the rotational movement of the user's body. The inertial sensor unit 10 can measure the rotation direction around each of the three axes X, Y, and Z shown in FIG. 1B, that is, the pitch, roll, and yaw.

The input operation unit 11 is an operation unit including keys, a touch panel, and the like for receiving various operations from the user. The storage unit 12 stores various data, programs, and the like used in the information processing device 1. Further, the storage unit 12 includes the sensor information data 121 acquired from the inertial sensor unit 10 and the determination result data 122 for storing the determination result of determining whether the landed foot is left or right.

The control unit 13 includes a data acquisition unit 131, a landing timing detection unit 132, a determination unit 133, and a display data generation unit 134. The data acquisition unit 131 acquires data measured by various sensors from the inertial sensor unit 10. Further, the data acquisition unit 131 stores the acquired data in the sensor information data 121 of the storage unit 12. The landing timing detection unit 132 detects the landing timing of the user based on the data measured by various sensors of the inertial sensor unit 10.

When the landing timing detection unit 132 detects the landing of the user, the determination unit 133 acquires the data acquired by the data acquisition unit 131 and determines the left and right of the landing foot of the user. The determination unit 133 stores the determination result of determining the left and right of the landing foot of the user in the determination result data 122 of the storage unit 12. Further, the determination unit 133 includes a first landing determination unit 331 and a second landing determination unit 332.

The first landing determination unit 331 determines the left and right of the user's landing foot based on the data of the roll component which is the rotation component in the traveling direction of the user during running, that is, the + Y axis direction, as shown in FIG. 1 (B). judge. The second landing determination unit 332 determines the left and right of the landing foot of the user based on the data other than the data of the roll component. The second landing determination unit 332 is based on, for example, the data of the yaw component which is the rotation component in the user's head direction, that is, the + Z axis direction, the past landing foot determination result, and the like shown in FIG. 1 (B). , Judge the left and right of the user's landing foot. The user's landing foot determination process performed by the first landing determination unit 331 is an example of the first landing determination process within the scope of the claims. Further, the landing foot determination process of the user performed by the second landing determination unit 332 is an example of the second landing determination process within the scope of the claims.

The display data generation unit 134 acquires from the determination result data 122 of the storage unit 12 and generates display data to be displayed on the display unit 14. The display data generation unit 134 transmits the generated display data to the display unit 14. The display unit 14 displays the display data received from the display data generation unit 134 on the screen. In addition, the display unit 14 can display menus, icons, and various data selected by the user on the screen.

The waveforms shown in FIGS. 3 to 5 are obtained by extracting roll components from the data acquired by the inertial sensor unit 10 shown in FIG. 2 and plotting them in time series. In the graphs shown in FIGS. 3 to 5, the vertical axis sets the angle and the horizontal axis sets the time. The time on the horizontal axis is set as one cycle from the landing of the user to the next landing.

The values of the roll component data acquired by the inertial sensor unit 10 are the opposite of plus and minus on the left and right. Here, in the following, the movement of the hips on the foot side landed by the user is referred to as stance-side raising movement, and the movement is referred to as stance-side raising movement. Further, the movement of the waist on the foot side that the user has not landed is called the swing leg side raising motion, and the motion is called the swing leg side raising motion. Further, in FIGS. 3 to 5, the waveform from landing to the middle of landing is a waveform indicating the stance raising motion of the waist after landing, and the waveform from the middle of landing to the next landing is the free leg side of the waist before landing. The waveform indicates the raising operation. In particular, the portion of the waveform that indicates the angle at which the hips move the most is called the stance-side elevation peak or the swing-side elevation peak. The period from landing to the middle of landing is an example of the first period after landing within the scope of claims. The period from the middle of landing to the next landing is an example of the second period before the next landing within the scope of claims.

The waveform shown in FIG. 3 is a waveform when the foot landed by the user changes from the right foot to the left foot. In this case, in the waveform showing the stance raising motion of the waist after landing shown from the landing to the middle of the landing, the stance side raising peak appears at a negative angle. Further, in the waveform showing the swing-side raising motion of the waist before landing, which is shown between the middle of landing and the next landing, the swing-side raising peak appears at a positive angle.

The waveform shown in FIG. 4 is a waveform when the foot landed by the user changes from the left foot to the right foot. In this case, in the waveform showing the stance raising motion of the waist after landing shown from the landing to the middle of the landing, the stance side raising peak appears at a positive angle. Further, in the waveform showing the swing-side raising motion of the waist before landing, which is shown between the middle of landing and the next landing, the swing-side raising peak appears at a negative angle.

The waveform shown in FIG. 5 is a waveform when the foot landed by the user changes from the right foot to the left foot. However, in this case, although the waveform showing the stance raising motion of the waist after landing shown from the landing to the middle of the landing takes a negative angle, the stance side raising peak does not clearly appear. Further, in the waveform showing the swing-side raising motion of the waist before landing, which is shown between the middle of landing and the next landing, the swing-side raising peak appears at a positive angle.

As described above, as shown in FIG. 5, the stance side elevation peak may not clearly appear in the roll component data acquired by the inertial sensor unit 10. Therefore, in the present embodiment, when the determination unit 133 of the control unit 13 shown in FIG. 2 determines the left and right of the landing foot of the user, the first landing determination unit 331 is acquired by the inertial sensor unit 10. Both the stance side elevation peak and the swing side elevation peak are detected from the roll component data, and the left and right of the user's landed foot are determined based on the detected stance side elevation peak and swing side elevation peak. Judgment shall be made. If the first landing determination unit 331 cannot determine the left and right of the user's landing foot, the second landing determination unit 332 shown in FIG. 2 shall determine the left and right of the user's landing foot. ..

FIG. 6 shows an example of a table of sensor information data 121 stored in the storage unit 12 of FIG. The table of the sensor information data 121 includes an item of the date and time for storing the data of the date and time when the data was acquired by the inertial sensor unit 10 and an item of sensor information for storing the acquired data. .. In the date and time item, the date and hour, minute, and second data from which the data was acquired are saved. Further, in the item of sensor information, raw data of data acquired from the inertial sensor unit 10 is stored.

FIG. 7 shows an example of a table of determination result data 122 stored in the storage unit 12 of FIG. In the table of the determination result data 122, the item of the date and time for storing the data of the date and time when the data of the inertial sensor unit 10 which is the original data of the determination is acquired, and the data of the determination result determined by the determination unit 133 are stored. The item of the judgment result for saving is included. The data stored in the judgment result item is whether the landed foot is left or right.

Further, the data acquisition unit 131, the landing timing detection unit 132, the determination unit 133, and the display data generation unit 134 included in the control unit 13 of the information processing apparatus 1 shown in FIG. 2 are stored in the storage unit 12. It is a function realized by executing the executed program. An example of the hardware configuration of the information processing apparatus 1 for executing this program will be described below with reference to FIG.

The information processing device 1 includes an inertial sensor 301 for measuring the direction of the rotation motion of the user's body, a storage device 302 for storing various programs and various data of the user, a memory 303 for reading various programs, and a memory 303. A processor 304 that executes various read programs, an input device 305 that accepts input operations from the user, a display device 306 that displays various data, and a display device 306 that generates and outputs display data to be displayed on the display device 306. It includes a processing unit 307 and an internal bus 308. The inertial sensor 301, the storage device 302, the memory 303, the processor 304, the input device 305, the display device 306, and the display processing unit 307 are connected to each other by an internal bus 308.

The inertial sensor 301 is a sensor for measuring the direction of the rotational movement of the user's body, and can detect the three-axis directions of the X-axis, the Y-axis, and the Z-axis. The inertial sensor 301 functions as the inertial sensor unit 10 shown in FIG. The inertial sensor 301 can be configured by, for example, a three-dimensional acceleration sensor, a three-dimensional gyro sensor, a geomagnetic sensor, or the like. Further, the inertial sensor 301 may be a combination of one or a plurality of one-dimensional acceleration sensors and one-dimensional gyro sensors.

The storage device 302 is a storage unit in which various programs, various data, and the like for realizing various functions executed by the information processing device 1 are stored. The storage device 302 functions as the storage unit 12 shown in FIG. The storage device 302 can be configured by, for example, a ROM (Read Only Memory), a storage element, or the like. The memory 303 is a storage element capable of reading and expanding various programs acquired from the storage device 302. The memory 303 can be configured from, for example, a RAM (Random Access Memory).

The processor 304 executes various programs read into the memory 303. The processor 304 can be configured by various control elements such as a CPU (Central Processing Unit) and an MPU (Micro-processing Unit), for example. The input device 305 is an input unit that receives instructions, various character strings, and the like from the user. The input device 305 functions as the input operation unit 11 shown in FIG. The input device 305 can be configured by, for example, a key button, a tablet, a digitizer, or the like.

The display device 306 is a display unit that displays various data. The display device 306 functions as the display unit 14 shown in FIG. The display device 306 can be configured by, for example, an organic EL (Electro-Luminence) display, an LCD (Liquid Crystal Display), a display panel capable of displaying MIP (Maximum Integrity Project), or the like. The display processing unit 307 is a processing unit that generates and outputs various display data to the display device 306. The display processing unit 307 can be configured by using, for example, a video signal output device such as a video card, a GPU (Graphics Processing Unit), or a graphic board.

Subsequently, the landing foot determination process executed by the control unit 13 of the information processing apparatus 1 will be described. The landing foot determination process is a process of determining the left and right of the landed foot based on the data measured by the inertial sensor unit 10 shown in FIG. The landing foot determination processing is stored in the storage device 302 shown in FIG. 8 as a landing foot determination processing program.

In the information processing device 1, for example, the landing foot determination processing program is read from the storage device 302 to the memory 303 by the user selecting an icon, a menu, or the like displayed on the screen of the display unit 14 shown in FIG. .. The processor 304 executes the landing foot determination processing program read into the memory 303. The landing foot determination process will be described below with reference to the flowcharts shown in FIGS. 9 to 11.

First, in FIG. 9, the data acquisition unit 131 of the control unit 13 in the information processing apparatus 1 shown in FIG. 2 acquires data in the direction of the rotation motion of the user's body measured by the inertial sensor unit 10. The data acquisition unit 131 saves the acquired data in the buffer (step S101). Here, the buffer for storing the acquired data by the data acquisition unit 131 is, for example, a temporary storage area formed in the memory 303 shown in FIG.

The landing timing detection unit 132 of the control unit 13 shown in FIG. 2 determines whether or not the landing of the user has been detected based on the data measured by the inertial sensor unit 10 (step S102). When the landing timing detection unit 132 detects the landing of the user (step S102; YES), the determination unit 133 of the control unit 13 acquires the data stored in the buffer. Further, the determination unit 133 clears the data in the buffer (step S103). If the landing timing detection unit 132 has not detected the landing of the user (step S102; NO), the process returns to step S101.

Subsequently, the first landing determination unit 331 of the determination unit 133 extracts the roll component data from the data acquired by the determination unit 133 in step S103. The first landing determination unit 331 detects an intermediate point of the extracted roll component data (step S104). Specifically, the data corresponding to the position in the middle of landing shown in FIGS. 3 to 5 is detected.

The first landing determination unit 331 executes the stance side determination process (step S105). The stance side determination process will be described below with reference to FIG. The first landing determination unit 331 acquires the first half of the roll component data (step S201). Specifically, the data of the roll component from the landing price shown in FIGS. 3 to 5 to the middle of the landing price is acquired. The first landing determination unit 331 detects the maximum value and the minimum value of the polar region from the acquired roll component data (step S202).

The first landing determination unit 331 determines whether or not the maximum value and the minimum value of the polar region could be detected from the acquired roll component data (step S203). When the first landing determination unit 331 could detect the maximum value and the minimum value of the polar region from the acquired roll component data (step S203; YES), the value at the time of landing was subtracted from the acquired maximum value. It is determined whether or not the absolute value of the value and the absolute value of the value obtained by subtracting the value at the time of landing from the acquired minimum value are not equal (step S204). When the absolute values of the acquired minimum values minus the landing values are not equal (step S204; YES), the first landing determination unit 331 is the difference between the acquired maximum and minimum values and the landing values. (Step S205).

Further, when the maximum value and the minimum value of the polar region cannot be detected from the roll component data acquired by the first landing determination unit 331 in step S203 (step S203; NO), or in step S204, When the absolute value of the acquired minimum value minus the value at the time of landing is equal (step S204; NO), the first landing determination unit 331 sets 0 as the stance side score value as no determination (step S206). ..

The first landing determination unit 331 determines whether or not the difference between the maximum value obtained in step S205 and the value at the time of landing is larger than the difference between the minimum value and the value at the time of landing (step S207). When the difference between the maximum value and the value at the time of landing is larger than the difference between the minimum value and the value at the time of landing (step S207; YES), the first landing determination unit 331 determines that the landed foot is on the left side and stands on the stance side. The score value is set to 1 (step S208).

Further, when the difference between the maximum value and the value at the time of landing is smaller than the difference between the minimum value and the value at the time of landing (step S207; NO), the first landing determination unit 331 determines that the landed foot is on the right side. The stance side score value is set to -1 (step S209). The first landing determination unit 331 ends the stance side determination process and returns to the landing foot determination process shown in FIG.

Returning to FIG. 9, the first landing determination unit 331 executes the swing leg side determination process (step S106). The free leg side determination process will be described below with reference to FIG. 11. The first landing determination unit 331 acquires the latter half of the roll component data (step S301). Specifically, the data of the roll component from the middle of the landing price to the next landing shown in FIGS. 3 to 5 is acquired. The first landing determination unit 331 detects the maximum value and the minimum value of the polar region from the acquired roll component data (step S302).

The first landing determination unit 331 determines whether or not the maximum value and the minimum value of the polar region could be detected from the acquired roll component data (step S303). When the first landing determination unit 331 can detect the maximum value and the minimum value of the polar region from the acquired roll component data (step S303; YES), the value at the time of the next landing is subtracted from the acquired maximum value. It is determined whether or not the absolute value of the value obtained and the absolute value of the value obtained by subtracting the value at the time of the next landing from the acquired minimum value are not equal (step S304). When the absolute value of the acquired maximum value minus the value at the time of the next landing and the absolute value of the value obtained by subtracting the value at the time of the next landing from the acquired minimum value are not equal (step S304; YES), the first The landing determination unit 331 obtains the difference between the acquired maximum and minimum values and the value at the time of the next landing (step S305).

Further, when the maximum value and the minimum value of the polar region cannot be detected from the roll component data acquired by the first landing determination unit 331 in step S303 (step S303; NO), or in step S304, When the absolute value of the acquired maximum value minus the value at the time of the next landing and the absolute value of the value obtained by subtracting the value at the time of the next landing from the acquired minimum value are equal (step S304; NO), the first landing determination unit. 331 sets the swing leg side score value to 0 as no determination (step S306).

The first landing determination unit 331 determines whether or not the difference between the maximum value obtained in step S305 and the value at the time of the next landing is larger than the difference between the minimum value and the value at the time of the next landing (step S307). When the difference between the maximum value and the value at the time of the next landing is larger than the difference between the minimum value and the value at the time of the next landing (step S307; YES), the first landing determination unit 331 determines that the landed foot is on the right side. The swing side score value is set to -1 (step S308).

Further, when the difference between the maximum value and the value at the time of the next landing is smaller than the difference between the minimum value and the value at the time of the next landing (step S307; NO), the first landing determination unit 331 sets the landed foot as the left side. The determination is made and the swing leg side score value is set to 1 (step S309). The first landing determination unit 331 ends the swing leg side determination process, and returns to the landing foot determination process shown in FIG.

Returning to FIG. 9, the first landing determination unit 331 sums the stance side score value and the swing side score value (step S107). The first landing determination unit 331 determines whether or not the total value is larger than 0 (step S108). When the total value is larger than 0 (step S108; YES), the first landing determination unit 331 determines that the landed foot is on the left side (step S109).

When the total value is smaller than 0 (step S108; NO), the first landing determination unit 331 determines whether or not the total value is 0 (step S110). When the total value is 0 (step S110; YES), the first landing determination unit 331 causes the second landing determination unit 332 to make a determination (step S111). The second landing determination unit 332 determines the landed foot based on data other than the roll component, past determination results, and the like.

When the total value is not 0 (step S110; NO), the first landing determination unit 331 determines that the landed foot is on the right side (step S112). The first landing determination unit 331 or the second landing determination unit 332 stores the determination result in the determination result data 122 of the storage unit 12 shown in FIG. Further, the first landing determination unit 331 stores the data acquired from the data acquisition unit 131 in step S103 in the sensor information data 121 of the storage unit 12 shown in FIG. 2 (step S113). The first landing determination unit 331 returns to step S101, and repeats the process of step S113 from step 101.

As described above, according to the information processing apparatus 1 according to the present embodiment, the landing is based on the rotation motion of the waist after landing and the rotation motion of the waist before the next landing obtained from the roll component measured by the inertial sensor. Since the left and right of the foot are determined, the left and right of the landing foot can be stably determined based on the roll component measured by the inertial sensor.

(Modification example)
It should be noted that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

In the above embodiment, the information processing apparatus 1 includes an inertial sensor unit 10 and a determination unit 133 of the control unit 13. Not limited to this, the inertial sensor unit 10 and the determination unit 133 of the control unit 13 may be separated. For example, a device attached to the user's waist is provided with an inertial sensor unit 10, a data acquisition unit 131 of the control unit 13, and a landing timing detection unit 132. A device separate from the device attached to the user's waist is provided with a determination unit 133 of the control unit 13, a display data generation unit 134, a storage unit 12, an input operation unit 11, and a display unit 14. Make it possible to communicate wirelessly with the device attached to the user's waist and the device separately. When the landing of the user is detected by the landing timing detection unit 132, the data measured by the inertial sensor unit 10 is transmitted from the device attached to the user's waist to another device, and the left and right of the landing foot are moved by the determination unit 133. It is judged. The shape of the separate device does not matter, such as a server or a device attached to the user's arm.

Further, in the above embodiment, in the landing foot determination process shown in FIG. 9, the landing foot determination result is stored in the storage unit 12. Not limited to this, the landing foot determination result may be stored in the storage unit 12 and displayed on the screen of the display unit 14.

Further, in the above embodiment, the determination result by the first landing determination unit 331 is scored to determine the left and right of the landing foot. Not limited to this, the determination result by the second landing determination unit 332 may be scored in the same manner as the determination result by the first landing determination unit 331.

Further, in the above embodiment, when the score value of the determination result by the first landing determination unit 331 becomes 0, the determination process by the second landing determination unit 332 is performed. Not limited to this, both the determination process by the first landing determination unit 331 and the determination process by the second landing determination unit 332 may be performed. Further, in this case, the score value of the determination result by the first landing determination unit 331 and the score value of the determination result by the second landing determination unit 332 are totaled, and it is determined from the total value whether the landed foot is left or right. You can do it.

Further, the method of applying the landing foot determination processing program in the present embodiment is arbitrary. For example, the landing foot determination processing program can be stored and applied in a computer-readable storage medium such as a flexible disk, a CD (Compact Disc) -ROM, a DVD (Digital Versaille Disc) -ROM, or a memory card. Further, the landing foot determination processing program can be superimposed on the carrier wave and applied via a communication medium such as the Internet. For example, the program may be posted and distributed on a bulletin board system (BBS: Bulletin Board System) on a communication network. Then, the landing foot determination processing program may be started and executed in the same manner as other application programs under the control of the OS (Operating System) so that the above processing can be executed.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the specific embodiment, and the present invention includes the invention described in the claims and the equivalent scope thereof. And are included. The inventions described in the original claims of the present application are described below.

(Additional note)
(Appendix 1)
Inertia sensor unit that measures the data of the direction of the rotation motion of the user's body,
When the landing timing of the user is detected, the roll which is a rotation component centered on the traveling direction of the user's waist is obtained from the data of the direction of the rotation motion of the user's body measured by the inertial sensor unit. The data of the component is acquired, and the data of the rotation motion of the waist in the first period after landing obtained from the acquired data of the roll component and the rotation of the waist in the second period before the next landing, which is different from the first period. A control unit that performs a first landing determination process that determines whether the user's landed foot is left or right based on motion data.
An information processing device equipped with.

(Appendix 2)
The control unit
When it is not possible to determine whether the user's landed foot is left or right by the first landing determination process, data other than the roll component data is obtained from the data in the direction of the rotation motion of the user's body measured by the inertial sensor unit. The second landing determination process of extracting the data and determining whether the landed foot of the user is left or right based on the data other than the extracted data of the roll component is further performed.
The information processing apparatus according to Appendix 1.

(Appendix 3)
The control unit
Data other than the roll component data was extracted from the data in the direction of the rotation motion of the user's body measured by the inertial sensor unit, and the user landed based on the extracted data other than the roll component data. Further the second landing determination process to determine whether the foot is left or right is performed.
Based on the determination result by the first landing determination process and the determination result by the second landing determination process, it is determined whether the landed foot of the user is left or right.
The information processing apparatus according to Appendix 1.

(Appendix 4)
The control unit
The determination result by the first landing determination process or the second landing determination process is stored in the storage unit.
The information processing apparatus according to Appendix 2 or 3.

(Appendix 5)
A display unit for displaying the determination result stored in the storage unit is further provided.
The information processing apparatus according to Appendix 4.

(Appendix 6)
Further provided with a member to be worn on the user's body.
The information processing apparatus according to any one of Supplementary note 1 to 5.

(Appendix 7)
Measure the data of the direction of the rotation movement of the user's body,
When the landing timing of the user is detected, the data of the roll component, which is a rotation component centered on the traveling direction of the waist of the user, is acquired from the measured data of the direction of the rotation motion of the user's body. Then, the data of the hip rotation motion in the first period after landing and the data of the hip rotation motion in the second period before the next landing, which is different from the first period, obtained from the acquired data of the roll component. Based on this, it is determined whether the landed foot of the user is left or right.
Information processing device method.

(Appendix 8)
In a computer
Processing to measure data in the direction of rotational movement of the user's body,
When the landing timing of the user is detected, the data of the roll component, which is a rotation component centered on the traveling direction of the waist of the user, is acquired from the measured data of the direction of the rotation motion of the user's body. Then, the data of the hip rotation motion in the first period after landing and the data of the hip rotation motion in the second period before the next landing, which is different from the first period, obtained from the acquired data of the roll component. Based on the process of determining whether the landed foot of the user is left or right,
A program to run.

1 ... Information processing device, 10 ... Inertivity sensor unit, 11 ... Input operation unit, 12 ... Storage unit, 13 ... Control unit, 14 ... Display unit, 121 ... Sensor information data, 122 ... Judgment result data, 131 ... Data acquisition unit , 132 ... Landing timing detection unit 133 ... Judgment unit, 134 ... Display data generation unit, 301 ... Inertivity sensor, 302 ... Storage device, 303 ... Memory, 304 ... Processor, 305 ... Input device, 306 ... Display device, 307 ... Display processing unit, 308 ... Internal bus, 331 ... First landing determination unit, 332 ... Second landing determination unit

Claims (8)

Inertia sensor unit that measures the data of the direction of the rotation motion of the user's body,
When the landing timing of the user is detected, the roll which is a rotation component centered on the traveling direction of the user's waist is obtained from the data of the direction of the rotation motion of the user's body measured by the inertial sensor unit. The data of the component is acquired, and the data of the rotation motion of the waist in the first period after landing obtained from the acquired data of the roll component and the rotation of the waist in the second period before the next landing, which is different from the first period. A control unit that performs a first landing determination process that determines whether the user's landed foot is left or right based on motion data.
An information processing device equipped with. The control unit
When it is not possible to determine whether the user's landed foot is left or right by the first landing determination process, data other than the roll component data is obtained from the data in the direction of the rotation motion of the user's body measured by the inertial sensor unit. The second landing determination process of extracting the data and determining whether the landed foot of the user is left or right based on the data other than the extracted data of the roll component is further performed.
The information processing apparatus according to claim 1. The control unit
Data other than the roll component data was extracted from the data in the direction of the rotation motion of the user's body measured by the inertial sensor unit, and the user landed based on the extracted data other than the roll component data. Further the second landing determination process to determine whether the foot is left or right is performed.
Based on the determination result by the first landing determination process and the determination result by the second landing determination process, it is determined whether the landed foot of the user is left or right.
The information processing apparatus according to claim 1. The control unit
The determination result by the first landing determination process or the second landing determination process is stored in the storage unit.
The information processing apparatus according to claim 2 or 3. A display unit for displaying the determination result stored in the storage unit is further provided.
The information processing apparatus according to claim 4. Further provided with a member to be worn on the user's body.
The information processing apparatus according to any one of claims 1 to 5. Measure the data of the direction of the rotation movement of the user's body,
When the landing timing of the user is detected, the data of the roll component, which is a rotation component centered on the traveling direction of the waist of the user, is acquired from the measured data of the direction of the rotation motion of the user's body. Then, the data of the hip rotation motion in the first period after landing and the data of the hip rotation motion in the second period before the next landing, which is different from the first period, obtained from the acquired data of the roll component. Based on this, it is determined whether the landed foot of the user is left or right.
Information processing device method. In a computer
Processing to measure data in the direction of rotational movement of the user's body,
When the landing timing of the user is detected, the data of the roll component, which is a rotation component centered on the traveling direction of the waist of the user, is acquired from the measured data of the direction of the rotation motion of the user's body. Then, the data of the hip rotation motion in the first period after landing and the data of the hip rotation motion in the second period before the next landing, which is different from the first period, obtained from the acquired data of the roll component. Based on the process of determining whether the landed foot of the user is left or right,
A program to run.

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