Active stylus power management design

Patent metadata

Field	Value
Publication number	US-11520418-B2
Application number	US-201917293012-A
Country	US
Kind code	B2
Filing date	Apr 16, 2019
Priority date	Apr 16, 2019
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

In one example, an input pen may include an electronic component, a communication interface to establish a short-range wireless connection with an electronic device, and a controller communicatively coupled to the electronic component and the communication interface. The controller may receive a command from the electronic device via the communication interface. The command may uniquely correspond to an operating mode of the electronic device. Further, the controller may control a power state of the electronic component based on the command.

First claim

What is claimed is:

1. An input pen comprising:
an electronic component;
a communication interface to establish a short-range wireless connection with an electronic device; and
a controller communicatively coupled to the electronic component and the communication interface to:
receive a command from the electronic device via the communication interface, wherein the command uniquely corresponds to an operating mode of the electronic device, and wherein the operating mode of the electronic device is determined based on an orientation of a display housing relative to a base housing; and
control a power state of the electronic component based on the command.

2. The input pen of claim 1 , wherein the controller is to control the power state of the electronic component based on the command such that the electronic component is to operate in a different power state than a power state of another electronic component of the input pen.

3. The input pen of claim 1 , further comprising:
a power switch coupled between a power source and the electronic component, wherein the controller is to control the power state of the electronic component via the power switch.

4. The input pen of claim 1 , wherein the communication interface is to establish the short-range wireless connection with the electronic device via pairing the input pen and the electronic device, wherein the short-range wireless connection is a Bluetooth connection, a near field communication connection, or a radio frequency identification connection.

5. The input pen of claim 1 , wherein the operating mode corresponds to a clamshell-closed mode, a tablet mode, a tent mode, or a laptop mode.

6. An input pen comprising:
first and second electronic components;
a communication interface to establish a short-range wireless connection with an electronic device; and
a controller communicatively coupled to the first and second electronic components and the communication interface to:
receive a command from the electronic device via the communication interface, wherein the command uniquely corresponds to an application being displayed on the electronic device; and
control a respective power state of the first and second electronic components based on the command such that the first electronic component and the second electronic component are to operate in different power states.

7. The input pen of claim 6 , wherein the first electronic component and the second electronic component are selected from a group consisting of an actuator, a force sensor, an accelerometer sensor, a gyro sensor, an active input pen controller, and an audio component.

8. The input pen of claim 6 , further comprising:
a first power switch coupled between a power source and the first electronic component; and
a second power switch coupled between the power source and the second electronic component, wherein the controller is to control the respective power state of the first electronic component and the second electronic component via the first power switch and the second power switch, respectively.

9. An electronic device comprising:
a main body comprising:
a display housing including a display;
a base housing pivotally connected to the display housing, wherein the base housing comprises:
a memory to store a command; and
a processor to:
determine an operating mode of the main body, wherein the operating mode of the main body is determined based on an orientation of the display housing relative to the base housing;
retrieve a command corresponding to the operating mode of the main body; and
transmit the command; and

an input pen detachably connected with the main body and interactive with the display, wherein the input pen comprises:
an electronic component;
a communication interface to establish a short-range wireless connection with the main body; and
a controller communicatively coupled to the electronic component and the communication interface to:
receive the command from the main body via the communication interface; and
control a power state of the electronic component such that the electronic component is to operate in a different power state than a power state of another electronic component of the input pen based on the command.

10. The electronic device of claim 9 , wherein the controller is to switch the power state of the electronic component to an active low, an active high, or an off state based on the command.

11. The electronic device of claim 9 , wherein the input pen and the main body are paired together via the short-range wireless connection, wherein the short-range wireless connection comprises a Bluetooth connection, a near field communication connection, or a radio frequency identification connection.

Assignees

• Hewlett Packard Development Co

Inventors

• Stancil Charles J
• Knutson Dale R
• Chen Tai Hsiang
• Wong Simon H

Classifications

• Y02D10/00

  Energy efficient computing, e.g. low power processors, power management or thermal management · CPC title

• G06F3/03545 Primary

  Pens or stylus · CPC title

• G06F3/0354

  with detection of two-dimensional [2D] relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks · CPC title

• G06F3/038

  Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry · CPC title

• G06F1/325

  Power saving in peripheral device · CPC title