# US 10,504,381 B2 · On-running landing position evaluation method, on-running landing position evaluation apparatus, detection method, detection apparatus, running motion evaluation method, and running motion evaluation apparatus

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- Number: US 10,504,381 B2
- Document ID: US10504381B2
- Status: Granted
- Kind: B2
- Application number: 14/814,506
- Filed: 2015-07-30
- Published: 2016-02-04
- Granted: 2019-12-10
- Earliest claimed: 2014-07-31
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Akinobu Sato; Shuji Uchida; Daisuke Sugiya
- Web page: https://patentgrep.com/patent/US10504381B2

## CPC

- G09B 19/0038: {Sports}
- G06V 40/23: {Recognition of whole body movements, e.g. for sport training}
- G06F 2218/00: Aspects of pattern recognition specially adapted for signal processing
- 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)
- G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

An on-running landing position evaluation method includes determining a deceleration period in an on-ground duration of a user who is running based on an acceleration value and calculating a travel distance in the determined deceleration period.

## Claims

### Claim 1

An on-running landing position evaluation method comprising:
with an acceleration sensor, evaluating a running motion of a user who is running by determining deceleration periods in on-ground durations of the running motion of the user based on acceleration values from the acceleration sensor;
calculating travel distances in the determined deceleration periods corresponding to distances between landing positions of the user and centers of gravity of the user when the user lands in the running motion; and
displaying a histogram during the running motion, wherein a first axis of the histogram indicates a plurality of different travel distances and a second axis of the histogram indicates frequencies that each of the plurality of different travel distances were calculated as travel distances, and wherein the histogram includes an indication of which of the plurality of different travel distances corresponds to a most recently calculated travel distance.

### Claim 2 (depends on 1)

The on-running landing position evaluation method according to claim 1,
wherein determining the deceleration periods includes determining landing timings of the running motion of the user and standing intermediate point timings of the running motion of the user when the centers of gravity of the user are above the landing positions.

### Claim 3 (depends on 2)

The on-running landing position evaluation method according to claim 2,
wherein determining the standing intermediate point timings include using the acceleration values from the acceleration sensor in a vertical direction.

### Claim 4 (depends on 1)

The on-running landing position evaluation method according to claim 1,
wherein calculating the travel distances includes multiplying durations of the deceleration periods by travel speeds of the user determined from the acceleration sensor.

### Claim 5 (depends on 2)

The on-running landing position evaluation method according to claim 2, comprising:
detecting positions of the landing timings and the standing intermediate point timings; and
calculating the travel distances based on positions of the landing timings and the standing intermediate point timings.