# US 11,309,929 B2 · Output power adjustments based on sensors

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- Number: US 11,309,929 B2
- Document ID: US11309929B2
- Status: Granted
- Kind: B2
- Application number: 16/978,728
- Filed: 2018-06-22
- Published: 2021-11-25
- Granted: 2022-04-19
- Earliest claimed: 2018-06-22
- Assignees: Hewlett-Packard Development Company, L.P.
- Applicants: Hewlett-Packard Development Company, L.P.
- Inventors: Simon Wong; Shih-Huang Wu
- Web page: https://patentgrep.com/patent/US11309929B2

## CPC

- H04B 1/3838: {Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use}
- H04W 52/246: {where the output power of a terminal is based on a path parameter calculated in said terminal}
- H04W 52/282: {taking into account the speed of the mobile}
- H04W 52/283: {Power depending on the position of the mobile}
- H04W 52/285: {taking into account the mobility of the user}
- H04W 52/367: {Power values between minimum and maximum limits, e.g. dynamic range}
- H04B: TRANSMISSION
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

An example electronic device includes a wireless communication component and a controller. The controller is to set an output power of the wireless communication component based on: whether a first external object is in proximity to a first side of the electronic device; whether the electronic device is stationary; and whether a second external object is in proximity to a second side of the electronic device, where the second side is opposite to the first side.

## Claims

### Claim 1

An electronic device comprising:
a wireless communication component; and
a controller to:
set an output power of the wireless communication component based on:
whether a first external object is in proximity to a first side of the electronic device;
whether the electronic device is stationary; and
whether a second external object is in proximity to a second side of the electronic device, wherein the second side is opposite to the first side; and
reduce the output power from a first value to a second value in response to detecting that the first external object is in proximity to the first side, wherein the first value is greater than a Specific Absorption Rate (SAR) threshold and the second value is less than or equal to the SAR threshold.

### Claim 2 (depends on 1)

The electronic device of claim 1, wherein the controller is set the output power to the first value in response to detecting that:
the first external object is in proximity to the first side;
the electronic device is stationary; and
the second external object is not in proximity to the second side.

### Claim 3 (depends on 2)

The electronic device of claim 2, wherein the controller is set the output power to the second value in response to detecting that:
the first external object is in proximity to the first side;
the electronic device is stationary; and
the second external object is in proximity to the second side.

### Claim 4 (depends on 2)

The electronic device of claim 2, wherein the controller is set the output power to the first value in response to detecting that:
the first external object is in proximity to the first side; and
the electronic device is in motion.

### Claim 5

An electronic device comprising:
a first proximity sensor to generate an active output in response to detecting a presence of an external object in proximity to the electronic device;
a movement sensor;
a second proximity sensor positioned in the electronic device to have a different sensing direction than the first proximity sensor;
a wireless communication component; and
a controller to:
reduce an output power of the wireless communication component from a first value to a second value in response to detecting the active output, wherein the first value is greater than a Specific Absorption Rate (SAR) threshold and the second value is less than or equal to the SAR threshold; and
while the output is active:
determine whether the electronic device is stationary based on an output from the movement sensor;
in response to a determination that the electronic device is stationary, determine whether an output from the second proximity sensor is active; and
in response to a determination that the output from the second proximity sensor is inactive, increase the output power.

### Claim 6 (depends on 5)

The electronic device of claim 5, further comprising:
a housing; and
a display device stored within the housing, wherein the first proximity sensor, the second proximity sensor, and the movement sensor are stored within the housing, wherein a sensing direction of the first proximity sensor is towards a first side of the housing, and wherein a sensing direction of the second proximity sensor is towards a second side of the housing.

### Claim 7 (depends on 6)

The electronic device of claim 6, further comprising:
a second housing detachable from the housing; and
an input device stored within the second housing.

### Claim 8 (depends on 5)

The electronic device of claim 5, wherein the second proximity sensor is implemented as a time-of-flight (ToF) sensor.

### Claim 9 (depends on 5)

The electronic device of claim 5, wherein the controller is to increase the output power when the output from the first proximity sensor changes from active to inactive.

### Claim 10

A non-transitory machine-readable storage medium comprising instructions that when executed cause a controller of an electronic device to:
reduce an output power of a wireless communication component of the electronic device from a first value to a second value in response to detecting an active output from a first proximity sensor of the electronic device, wherein the first value is greater than a Specific Absorption Rate (SAR) threshold and the second value is less than or equal to the SAR threshold; and
while the output is active:
determine whether the electronic device is stationary based on an output from a movement sensor of the electronic device;
in response to a determination that the electronic device is stationary, determine whether an output from a second proximity sensor of the electronic device is active; and
in response to a determination that the output from the second proximity sensor is inactive, increase the output power.

### Claim 11 (depends on 10)

The non-transitory machine-readable storage medium of claim 10, wherein the instructions when executed further cause the controller to maintain the output power at the second value in response to a determination that the electronic device is in motion.

### Claim 12 (depends on 10)

The non-transitory machine-readable storage medium of claim 10, wherein the instructions when executed further cause the controller to:
monitor a duration in which the output from the movement sensor is inactive; and
determine that the electronic device is stationary when the duration is greater than a threshold.

### Claim 13 (depends on 10)

The non-transitory machine-readable storage medium of claim 10, wherein the instructions when executed further cause the controller to increase the output power when the output changes from active to inactive.

### Claim 14 (depends on 10)

The non-transitory machine-readable storage medium of claim 10, wherein the instructions when executed further cause the controller to maintain the output power at a current value in response to a determination that the output from the second proximity sensor is active.