# US 11,076,814 B2 · Fitness tracking system and method of operating a fitness tracking system

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- Number: US 11,076,814 B2
- Document ID: US11076814B2
- Status: Granted
- Kind: B2
- Application number: 16/010,099
- Filed: 2018-06-15
- Published: 2019-12-19
- Granted: 2021-08-03
- Earliest claimed: 2018-06-15
- Assignees: Under Armour, Inc.
- Applicants: Under Armour, Inc.
- Inventors: Michael Mazzoleni; F. Grant Kovach; Jeffrey Allen; John Martin; Daniel Sargeant; Bradford J. Fults; Chirstopher Green; Mark Oleson; Nathan Dau
- Web page: https://patentgrep.com/patent/US11076814B2

## CPC

- A63B 24/0062: {Monitoring athletic performances, e.g. for determining the work of a user on an exercise apparatus, the completed jogging or cycling distance}
- A43B 3/34: with electrical or electronic arrangements
- A43B 5/06: Running shoes; Track shoes
- A61B 5/0004: {characterised by the type of physiological signal transmitted}
- A61B 5/0022: {Monitoring a patient using a global network, e.g. telephone networks, internet}
- A61B 5/1038: {Measuring plantar pressure during gait}
- A61B 5/1112: {Global tracking of patients, e.g. by using GPS}
- A61B 5/1118: {Determining activity level}
- A61B 5/112: {Gait analysis}
- A61B 5/1123: {Discriminating type of movement, e.g. walking or running (A61B5/1116, A61B5/112 take precedence)}
- A61B 5/6807: {Footwear}
- A61B 5/7264: {Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems}
- A61B 5/7285: {for synchronizing or triggering a physiological measurement or image acquisition with a physiological event or waveform, e.g. an ECG signal}
- A61B 5/02438: {with portable devices, e.g. worn by the patient}
- A61B 5/681: {Wristwatch-type devices}
- A61B 5/6823: {Trunk, e.g., chest, back, abdomen, hip}
- A61B 2503/10: Athletes
- A61B 2505/09: Rehabilitation or training
- A61B 2562/0247: Pressure sensors
- A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H)
- A43B: CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A method of operating a fitness tracking system includes generating movement data corresponding to movement of a user, sampling the generated movement data at a first sampling rate as first sampled data when operating the fitness tracking system in an activity detection mode, and sampling the generated movement data at a second sampling rate as second sampled data when operating the fitness tracking system in a workout mode. The second sampling rate is greater than the first sampling rate.

## Claims

### Claim 1

A fitness tracking system, comprising:
a shoe;
a movement sensor mounted to the shoe and configured to generate movement data corresponding to movement of a user; and
a controller mounted to the shoe and configured to sample the movement data at a first sampling rate as first sampled data when the fitness tracking system is operated in an activity detection mode and to sample the movement data at a second sampling rate as second sampled data when the fitness tracking system is operated in a pre-workout mode or a workout mode,
wherein the second sampling rate is greater than the first sampling rate, and
wherein the fitness tracking system is configured to switch from operating in the pre-workout mode to operating in the workout mode in response to determining that (i) a cadence of the user determined from the second sampled data does not satisfy a cadence threshold, (ii) a ground contact value of the user determined from the second sampled data does not satisfy a first ground contact threshold, and (iii) the ground contact value of the user satisfies a second ground contact threshold.

### Claim 2 (depends on 1)

The fitness tracking system of claim 1, further comprising:
a monitoring unit including the movement sensor and the controller,
wherein the monitoring unit is permanently embedded in the shoe such that the monitoring unit cannot be removed from the shoe without destruction thereof.

### Claim 3 (depends on 2)

The fitness tracking system of claim 2, further comprising:
a remote processing server operably connected to the monitoring unit and configured to apply a set of rules to the movement data to determine at least one of the cadence of the user and the ground contact value of the user.

### Claim 4

A fitness tracking system, comprising:
a shoe configured to be worn by a user;
a movement sensor mounted to the shoe and configured to generate movement data corresponding to bipedal movement of the user; and
a controller mounted to the shoe and configured to:
receive the movement data from the movement sensor;
sample the movement data at a first sampling rate as first sampled data when operating in an activity detection mode;
sample the movement data at a second sampling rate as second sampled data when operating in a workout mode, wherein the second sampling rate is greater than the first sampling rate;
operate in the activity detection mode in response to determining that a cadence of the user determined from the second sampled data satisfies a cadence threshold;
operate in the activity detection mode in response to determining that (i) the cadence of the user does not satisfy the cadence threshold, and (ii) a ground contact value of the user determined from the second sampled data satisfies a first ground contact threshold; and
operate in the workout mode in response to determining that (i) the cadence of the user does not satisfy the cadence threshold, (ii) the ground contact value of the user does not satisfy the first ground contact threshold, and (iii) the ground contact value of the user satisfies a second ground contact threshold.

### Claim 5 (depends on 4)

The fitness tracking system of claim 4 wherein the movement sensor is configured to generate the movement data with a monitoring device permanently embedded in the shoe of the user.

### Claim 6 (depends on 4)

The fitness tracking system of claim 4, wherein the controller is further configured to:
store the first sampled data in a memory for a predetermined time period; and
store the second sampled data in the memory for a time period that is greater than the predetermined time period.

### Claim 7 (depends on 6)

The fitness tracking system of claim 6, wherein the controller is further configured to:
determine a number of strides of the user from the first sampled data;
operate in the activity detection mode in response to determining that the determined number of strides of the user does not satisfy a stride threshold;
operate in a pre-workout mode in response to determining that the determined number of strides satisfies the stride threshold; and
sample the movement data at the second sampling rate as the second sampled data when operating in the pre-workout mode.

### Claim 8 (depends on 4)

The fitness tracking system of claim 4, wherein the controller is further configured to:
after operating in the workout mode, switch to operation in the activity detection mode in response to determining that the cadence of the user satisfies the cadence threshold for a duration of a termination predetermined time period; and
after operating in the workout mode, switch to operation in the activity detection mode in response to determining that (i) the cadence of the user does not satisfy the cadence threshold, and (ii) the ground contact value of the user satisfies the first ground contact threshold for the duration of the termination predetermined time period.

### Claim 9 (depends on 8)

The fitness tracking system of claim 8, wherein the termination predetermined time period is five minutes.

### Claim 10 (depends on 8)

The fitness tracking system of claim 8, wherein the controller is further configured to:
after operating in the workout mode and then reverting to the activity detection mode, delete movement data of the termination predetermined time period from the second sampled data.

### Claim 11 (depends on 4)

The fitness tracking of claim 4, wherein the controller is further configured to:
operate in the activity detection mode in response to determining that (i) the cadence of the user does not satisfy the cadence threshold, (ii) the ground contact value of the user does not satisfy the first ground contact threshold, (iii) the ground contact value of the user does not satisfy the second ground contact threshold, and (iv) a value of a function including the cadence of the user and a ground contact time of the user satisfies a value threshold; and
operate in the workout mode in response to determining that (i) the cadence of the user does not satisfy the cadence threshold, (ii) the ground contact value of the user does not satisfy the first ground contact threshold, (iii) the ground contact value of the user does not satisfy the second ground contact threshold, and (iv) the value of the function including the cadence of the user and the ground contact time of the user does not satisfy the value threshold.

### Claim 12

A fitness tracking system, comprising:
a shoe configured to be worn by a user;
a movement sensor mounted to the shoe and configured to generate movement data corresponding to bipedal movement of the user; and
a controller mounted to the shoe and configured to:
sample the movement data at a first sampling rate as first sampled data when operating in an activity detection mode;
sample the movement data at a second sampling rate as second sampled data when operating in a pre-workout mode or a workout mode, wherein the second sampling rate is greater than the first sampling rate; and
switch from operating in the pre-workout mode to operation in the workout mode in response to determining that (i) a cadence of the user determined from the second sampled data does not satisfy a cadence threshold, (ii) a ground contact value of the user determined from the second sampled data does not satisfy a first ground contact threshold, and (iii) the ground contact value of the user satisfies a second ground contact threshold.

### Claim 13 (depends on 12)

The fitness tracking system of claim 12, wherein the movement sensor is configured to generate the movement data with a movement sensor embedded in the shoe of the user.

### Claim 14 (depends on 13)

The fitness tracking system of claim 13, wherein the controller is further configured to:
switch from operating the pre-workout mode to the activity detection mode in response to determining that (a) the cadence of the user satisfies the cadence threshold, or (b) both (i) the cadence of the user does not satisfy the cadence threshold, and (ii) the ground contact value of the user satisfies the first ground contact threshold.

### Claim 15 (depends on 14)

The fitness tracking system of claim 14, wherein the controller is further configured to:
store the first sampled data in a memory for a predetermined time period; and
store the second sampled data in the memory for a time period that is greater than the predetermined time period.

### Claim 16 (depends on 12)

The fitness tracking system of claim 12, wherein the controller is further configured to:
determine a number of strides of the user from the first sampled data; and
operate in the activity detection mode in response to determining that the determined number of strides of the user does not satisfy a stride threshold; and
operate in the pre-workout mode in response to determining that the determined number of strides of the user satisfies the stride threshold.

### Claim 17 (depends on 12)

The fitness tracking system of claim 12, wherein the controller is further configured to:
after operating in the workout mode, switch to operation in the activity detection mode in response to determining that (a) the cadence of the user satisfies the cadence threshold for a duration of a termination predetermined time period, or (b) both (i) the cadence of the user does not satisfy the cadence threshold, and (ii) the ground contact value of the user satisfies the first ground contact threshold for the duration of the termination predetermined time period.

### Claim 18 (depends on 17)

The fitness tracking system of claim 17, wherein the controller is further configured to:
after operating in the workout mode and then switching to operation in the activity detection mode, deleting movement data of the termination predetermined time period from the second sampled data.

### Claim 19 (depends on 12)

The fitness tracking system of claim 12, wherein the controller is further configured to:
switch from operating in the pre-workout mode to operation in the workout mode in response to determining that (i) the cadence of the user does not satisfy the cadence threshold, (ii) the ground contact value of the user does not satisfy the first ground contact threshold, (iii) the ground contact value of the user does not satisfy the second ground contact threshold, and (iv) a value of a function including the cadence of the user and a ground contact time of the user does not satisfy a value threshold.