# US 10,120,431 B2 · Raise gesture detection in a device with preheating of a processor

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- Number: US 10,120,431 B2
- Document ID: US10120431B2
- Status: Granted
- Kind: B2
- Application number: 14/796,687
- Filed: 2015-07-10
- Published: 2016-01-21
- Granted: 2018-11-06
- Earliest claimed: 2014-07-18
- Assignees: Apple Inc.
- Applicants: Apple Inc.
- Inventors: Xiaoyuan Tu; Anil K. Kandangath
- Web page: https://patentgrep.com/patent/US10120431B2

## CPC

- G06F 1/3234: Power saving characterised by the action undertaken
- G06F 1/163: {Wearable computers, e.g. on a belt}
- G06F 1/1694: {the I/O peripheral being a single or a set of motion sensors for pointer control or gesture input obtained by sensing movements of the portable computer}
- G06F 1/3206: Monitoring of events, devices or parameters that trigger a change in power modality
- G06F 1/3218: of display devices
- G06F 1/3265: {Power saving in display device}
- G06F 1/3287: by switching off individual functional units in the computer system
- G06F 1/3296: by lowering the supply or operating voltage
- G06F 3/013: {Eye tracking input arrangements (G06F3/015 takes precedence)}
- G06F 3/014: {Hand-worn input/output arrangements, e.g. data gloves}
- G06F 3/017: {Gesture based interaction, e.g. based on a set of recognized hand gestures (interaction based on gestures traced on a digitiser G06F3/04883)}
- G06F 3/0346: with detection of the device orientation or free movement in a three-dimensional [3D] space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
- Y02D 10/00: Energy efficient computing, e.g. low power processors, power management or thermal management
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

A wearable computing device can detect device-raising gestures. For example, onboard motion sensors of the device can detect movement of the device in real time and infer information about the spatial orientation of the device. Based on analysis of signals from the motion sensors, the device can detect a raise gesture, which can be a motion pattern consistent with the user moving the device's display into his line of sight. In response to detecting a raise gesture, the device can activate its display and/or other components. Detection of a raise gesture can occur in stages, and activation of different components can occur at different stages.

## Claims

### Claim 1

A method for detecting a preheat event corresponding to an initiation of a raise gesture in a wearable device, the method comprising:
operating a motion sensor of the device to collect data samples at a sampling rate;
detecting, by a first processor in the device, a possible initiation of a raise gesture based at least in part on analyzing one or more of the data samples including a most recent data sample;
in the event that a possible initiation of a raise gesture is not detected, repeating the analyzing for a subsequent data sample; and
in the event that a possible initiation of a raise gesture is detected:
evaluating, by the first processor, each of a sequence of subsequent data samples as either consistent or inconsistent with a raise gesture;
incrementing a first count of data samples for each data sample of the sequence of subsequent data samples that is evaluated as consistent with a raise gesture;
incrementing a second count of data samples for each data sample of the sequence of subsequent data samples that is evaluated as inconsistent with a raise gesture; and
notifying, by the first processor, another component of the device of a preheat event in the event that the first count reaches a first threshold number before the second count reaches a second threshold number.

### Claim 2 (depends on 1)

The method of claim 1 further comprising, in the event that the second count reaches the second threshold number before the first count reaches the first threshold number:
returning to an initial state in which a possible initiation of a raise gesture has not been detected; and
repeating the detecting of a possible initiation of a raise gesture.

### Claim 3 (depends on 1)

The method of claim 1 wherein the other component includes an applications processor, the method further comprising:
transitioning the applications processor from a sleep state to a wake state in response to the notification of the preheat event.

### Claim 4 (depends on 3)

The method of claim 3 wherein transitioning the applications processor from the sleep state to the wake state does not affect a state of a user interface component of the device.

### Claim 5 (depends on 3)

The method of claim 3 wherein the applications processor transitions from the wake state to the sleep state in the event that the notification of the preheat event is not followed by a notification of a raise gesture within a timeout period.

### Claim 6 (depends on 1)

The method of claim 1 wherein detecting a possible initiation of a raise gesture includes:
comparing two most recent data samples to detect a change in position or orientation of the device; and
determining whether the detected change is in a direction consistent with initiation of a raise gesture.

### Claim 7 (depends on 1)

The method of claim 1 wherein the motion-sensor data includes accelerometer data.

### Claim 8 (depends on 1)

The method of claim 1 wherein detecting a possible initiation of a raise gesture is based at least in part on a starting pose determined from the data samples.

### Claim 9 (depends on 1)

The method of claim 1 wherein evaluating one or more of the subsequent data samples is based at least in part on one or more of:
an evaluation of whether a change in one or both of a position or an orientation of the device, as determined from the data samples, is consistent with continuing a raise gesture;
a measurement of a smoothness of the motion based on the data samples;
a starting pose at a time when the possible initiation of the raise gesture was detected; or
a trajectory of the device inferred from the data samples.

### Claim 10 (depends on 1)

The method of claim 1 further comprising, subsequently to notifying the other component of the preheat event:
continuing to evaluate, by the first processor, each of a sequence of subsequent data samples as either consistent or inconsistent with a raise gesture; and
notifying the other component of a loss-of-preheat event in the event that the subsequent data samples become inconsistent with a raise gesture.

### Claim 11

A device comprising:
a user interface component having an active state and an inactive state;
a motion sensor to detect motion of the device; and
a first processor configured to:
operate a motion sensor of the device to collect data samples at a sampling rate;
detect in the device, a possible initiation of a raise gesture based at least in part on a most recent data sample;
in the event that a possible initiation of a raise gesture is not detected, repeat the analyzing for a subsequent data sample; and
in the event that a possible initiation of a raise gesture is detected:
evaluate each of a sequence of subsequent data samples as either consistent or inconsistent with a raise gesture;
increment a first count of data samples for each of the sequence of subsequent data samples that is evaluated as consistent with a raise gesture;
increment a second count of data samples for each of the sequence of subsequent data samples that is evaluated as inconsistent with a raise gesture; and
notify another component of the device of a preheat event in the event that the first count reaches a first threshold number before the second count reaches a second threshold number.

### Claim 12 (depends on 11)

The device of claim 11 wherein the device is a wearable device.

### Claim 13 (depends on 11)

The device of claim 11 wherein the device is a wrist-wearable device.

### Claim 14 (depends on 11)

The device of claim 11 wherein the user interface component includes one or more of:
a display;
a touch-screen display;
a microphone;
a speaker; or
a button.

### Claim 15 (depends on 11)

The device of claim 11 wherein the motion sensor includes one or more of:
an accelerometer; or
a gyroscopic sensor.

### Claim 16 (depends on 11)

The device of claim 11 further comprising an applications processor, wherein the first processor is a coprocessor and the other component includes the applications processor.

### Claim 17

A computer-readable storage medium having stored therein program instructions that, when executed by a first processor in a device, cause the first processor to perform a method comprising:
operating a motion sensor of the device to collect data samples at a sampling rate;
detecting, by a first processor in the device, a possible initiation of a raise gesture based at least in part on a most recent data sample;
in the event that a possible initiation of a raise gesture is not detected, repeating the analyzing for a subsequent data sample; and
in the event that a possible initiation of a raise gesture is detected:
evaluating, by the first processor, each of a sequence of subsequent data samples as either consistent or inconsistent with a raise gesture;
incrementing a first count of data samples for each data sample of the sequence of subsequent data samples that is evaluated as consistent with a raise gesture;
incrementing a second count of data samples for each data sample of the sequence of subsequent data samples that is evaluated as inconsistent with a raise gesture; and
notifying, by the first processor, another component of the device of a preheat event in the event that the first count reaches a first threshold number before the second count reaches a second threshold number.

### Claim 18 (depends on 17)

The computer-readable storage medium of claim 17 wherein the other component includes an applications processor, the method further comprising:
transitioning the applications processor from a sleep state to a wake state in response to the notification of the preheat event.

### Claim 19 (depends on 17)

The computer-readable storage medium of claim 17 wherein evaluating one or more of the subsequent data samples is based at least in part on one or more of:
an evaluation of whether a change in one or both of a position or an orientation of the device, as determined from the data samples, is consistent with continuing a raise gesture;
a measurement of a smoothness of the motion based on the data samples;
a starting pose at a time when the possible initiation of the raise gesture was detected; or
a trajectory of the device inferred from the data samples.

### Claim 20 (depends on 17)

The computer-readable storage medium of claim 17 further comprising, subsequently to notifying the other component of the preheat event:
continuing to evaluate, by the first processor, each of a sequence of subsequent data samples as either consistent or inconsistent with a raise gesture; and
notifying the other component of a loss-of-preheat event in the event that the subsequent data samples become inconsistent with a raise gesture.