# US 10,478,707 B2 · Motion analysis method and motion analysis device

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- Number: US 10,478,707 B2
- Document ID: US10478707B2
- Status: Granted
- Kind: B2
- Application number: 15/170,162
- Filed: 2016-06-01
- Published: 2016-09-22
- Granted: 2019-11-19
- Earliest claimed: 2013-06-21
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Masafumi Sato
- Web page: https://patentgrep.com/patent/US10478707B2

## CPC

- A63B 71/0619: {Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills}
- A61B 5/1122: {of movement trajectories}
- A61B 5/6895: {Sport equipment}
- A63B 24/0003: {Analysing the course of a movement or motion sequences during an exercise or trainings sequence, e.g. swing for golf or tennis}
- A63B 69/36: for golf
- A63B 69/3608: {Attachments on the body, e.g. for measuring, aligning, restraining (A63B69/0059, A63B69/3673 take precedence)}
- G01P 15/02: by making use of inertia forces {using solid seismic masses}(G01P15/14 takes precedence)
- G09B 19/003: {Repetitive work cycles; Sequence of movements}
- A61B 5/744: {Displaying an avatar, e.g. an animated cartoon character}
- A61B 2562/0219: Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
- A63B 24/0006: {Computerised comparison for qualitative assessment of motion sequences or the course of a movement}
- A63B 2071/0647: {Visualisation of executed movements}
- A63B 2208/0204: Standing on the feet
- A63B 2220/18: Inclination, slope or curvature
- A63B 2220/40: Acceleration
- A63B 2220/51: Force
- A63B 2220/803: Motion sensors
- A63B 2220/833: Sensors arranged on the exercise apparatus or sports implement
- A63B 2220/836: Sensors arranged on the body of the user
- A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- G01P: MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT (measuring or recording blood flow A61B5/02, A61B8/06; monitoring speed or deceleration of electrically-propelled vehicles B60L3/00; vehicle lighting systems adapted to indicate speed B60Q1/54; determining position or course in navigation, measuring ground distance in geodesy or surveying G01C; combined measuring devices for measuring two or more variables of movement G01C23/00; measuring velocity of sound G01H; measuring velocity of light G01J7/00; measuring direction or velocity of solid objects by reception or emission of radiowaves or other waves and based on propagation effects, e.g. Doppler effect, propagation time, direction of propagation, G01S; measuring speed of nuclear radiation G01T; measuring acceleration of gravity G01V; {measuring or recording the speed of trains B61L23/00; speed indicators incorporated in motor vehicles B60K35/00; measuring frequency or phase G01R; traffic control G08G})
- G09B: EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS (devices for psychotechnics or for testing reaction times A61B5/16; games, sports, amusements A63; projectors, projector screens G03B)

## Abstract

A motion analysis device includes a calculation unit which specifies a first imaginary plane, that is, a shaft plane formed by a first line segment representing a direction in which a shaft part of a sporting gear in a static posture extends and a second line segment representing a ball hitting direction, with the use of an output from an inertial sensor.

## Claims

### Claim 1

A display device that receives an output of an inertial sensor associated with a golf club held by a user, comprising:
a processor that determines from the output of the inertial sensor a first plane including (a) a first straight line that extends in an extending direction of a shaft portion of the golf club, and (b) a second straight line showing a ball hitting direction, and determines a second plane based on a user's static position holding the golf club, a ball-hitting position and a ball hitting direction; and
a display that displays on a screen an image of the first plane, the second plane and the golf club simultaneously,
wherein the first and second planes are visually displayed in a three-dimensional space, and wherein the second plane is determined in three dimensions based upon coordinates of a shoulder of the user.

### Claim 2 (depends on 1)

The display device according to claim 1, wherein the display device displays a trajectory of a swing of the golf club.

### Claim 3 (depends on 1)

The display device according to claim 1, wherein the first and second planes contact each other.

### Claim 4 (depends on 1)

The display device according to claim 1, wherein the first plane includes (i) a first straight line that extends in an extending direction of the golf club in a static position and (ii) a second straight line showing the ball hitting direction.

### Claim 5 (depends on 1)

The display device according to claim 1, wherein the second plane includes (i) a third straight line connecting (a) a neck or shoulder of the user and (b) the ball hitting position and (ii) a second straight line showing the ball hitting direction.

### Claim 6 (depends on 1)

The display device according to claim 1, wherein the first and second planes are planes specified in a static swing position of the golf club.

### Claim 7

A display device that receives an output of an inertial sensor associated with a sporting gear held by a user, comprising:
a processor that determines from the output of the inertial sensor: (i) a first plane including (a) a first straight line that extends in an extending direction of a shaft portion of the sporting gear, and (b) a second straight line showing a ball hitting direction, and (ii) a second plane including (1) a third straight line connecting a neck or shoulder of the user and a ball hitting position of the user and (2) the second straight line showing the ball hitting direction; and
a display that displays an image of the first plane, the second plane and the sporting gear simultaneously,
wherein the first and second planes are visually displayed in a three-dimensional space, and wherein the second plane is determined in three dimensions based upon coordinates of a shoulder of the user.

### Claim 8 (depends on 7)

The display according to claim 7, wherein the display displays a trajectory of a swing of the sporting gear.

### Claim 9 (depends on 7)

The display device according to claim 7, wherein the first and second planes contact each other.

### Claim 10 (depends on 7)

The display device according to claim 7, wherein the first and second planes are planes specified in a static state of the sporting gear.

### Claim 11 (depends on 7)

The display device according to claim 7, wherein the inertial sensor includes at least one of an acceleration sensor and a gyroscope inertial sensor.

### Claim 12

A display method that uses an output of an inertial sensor associated with a golf club held by a user, comprising:
determining with a processor, from the output of the inertial sensor, a first plane including (a) a first straight line that extends in an extending direction of a shaft portion of the golf club, and (b) a second straight line showing a ball hitting direction, and determining a second plane based on a user's static position holding the golf club, a ball-hitting position and a ball hitting direction; and
displaying on a screen an image of the first plane, the second plane and the golf club simultaneously,
wherein the first and second planes are visually displayed in a three-dimensional space, and wherein the second plane is determined in three dimensions based upon coordinates of a shoulder of the user.

### Claim 13 (depends on 12)

The display device according to claim 12, further comprising displaying a trajectory of a swing of the golf club.

### Claim 14 (depends on 12)

The display device according to claim 12, wherein the first and second planes contact each other.

### Claim 15 (depends on 12)

The display device according to claim 12, wherein the first plane includes (i) a first straight line that extends in a extending direction of the golf club and (ii) a second straight line showing a ball hitting direction.

### Claim 16 (depends on 12)

The display method according to claim 12, wherein the second plane includes (i) a third straight line connecting (a) a neck or shoulder of a subject and (b) a ball hitting position and (ii) the second straight line showing the ball hitting direction.

### Claim 17 (depends on 12)

The display method according to claim 12, wherein the first and second planes are planes specified in a static state of the golf club.

### Claim 18

A display method that uses an output of an inertial sensor associated with a sporting gear held by a user, comprising:
determining with a processor, from the output of the inertial sensor, (i) a first plane including (a) a first straight line that extends in an extending direction of a shaft portion of the sporting gear and (b) a second straight line showing a ball hitting direction of the sporting gear, (ii) a second plane including (1) a third straight line connecting a neck or shoulder of a subject and a ball hitting position and (2) the second straight line; and
displaying on a display an image of the first plane, the second plane and the sporting gear simultaneously,
wherein the first and second planes are visually displayed in a three-dimensional space, and wherein the second plane is determined in three dimensions based upon coordinates of a shoulder of the user.

### Claim 19 (depends on 18)

The display method according to claim 18, further comprising determining a trajectory of a swing of the sporting gear based on the output of the inertial sensor; and
displaying on the display the trajectory of the swing of the sporting gear.

### Claim 20 (depends on 18)

The display method according to claim 18, wherein the first and second planes contact each other.

### Claim 21 (depends on 18)

The display method according to claim 18, wherein the first and second planes are planes specified in a static state of the sporting gear.

### Claim 22 (depends on 18)

The display method according to claim 18, wherein the inertial sensor includes at least any of an acceleration sensor and a gyroscope inertial sensor.