Surface classifications

Patent metadata

Field	Value
Publication number	US-2023077550-A1
Application number	US-202117476077-A
Country	US
Kind code	A1
Filing date	Sep 15, 2021
Priority date	Sep 15, 2021
Publication date	Mar 16, 2023
Grant date	—

Abstract

In some examples, an electronic device includes a tip pressure sensor to capture tip pressure data based on a writing surface. In some examples, the electronic device includes a processor to produce a classification of the writing surface based on the tip pressure data via a machine learning model. In some examples, the electronic device may include a haptic device to control haptic feedback based on the classification.

First claim

1 . An electronic device, comprising:
a tip pressure sensor to capture tip pressure data based on a writing surface; a processor to produce a classification of the writing surface based on the tip pressure data via a machine learning model, wherein the machine learning model is an artificial neural network; and a haptic device to control haptic feedback based on the classification.

2 . The electronic device of claim 1 , wherein the classification indicates a surface type of the writing surface.

3 . The electronic device of claim 1 , wherein the classification indicates a roughness metric.

4 . The electronic device of claim 3 , wherein the haptic device is to control haptic feedback with an inverse relationship relative to the roughness metric indicated by the classification.

5 . The electronic device of claim 1 , wherein the machine learning model is trained using training data labeled with a surface type.

6 . The electronic device of claim 1 , further comprising an internal bus to communicate the classification from the processor to the haptic device.

7 . The electronic device of claim 1 , wherein the haptic device is to control haptic feedback further based on user setting data.

8 . The electronic device of claim 1 , further comprising a grip sensor to capture grip data, wherein the processor is to produce the classification based on the grip data.

9 . The electronic device of claim 1 , wherein the processor is to produce the classification based on orientation data, coordinate data, or speed data.

10 . An apparatus, comprising:
a communication interface to receive tip pressure data from a stylus device; a touchscreen controller to determine information comprising coordinate data, orientation data, or speed data corresponding to the stylus device; and a processor to produce a writing surface classification using a machine learning model based on the tip pressure data and the information, wherein the machine learning model is an artificial neural network.

11 . The apparatus of claim 10 , wherein the communication interface is to send the writing surface classification to the stylus device.

12 . The apparatus of claim 10 , wherein the machine learning model is a multilayer perceptron (MLP) model.

13 . A non-transitory tangible computer-readable medium comprising instructions when executed cause a processor of an electronic device to:
receive tip pressure data captured by a tip pressure sensor, wherein the tip pressure data is captured while a stylus tip is in contact with a writing surface; predict, using a machine learning model, a classification of the writing surface based on the tip pressure data, wherein the machine learning model is an artificial neural network; and send the classification to a haptic device.

14 . The non-transitory tangible computer-readable medium of claim 13 , wherein the classification is sent to the haptic device via a wireless communication interface.

15 . The non-transitory tangible computer-readable medium of claim 13 , wherein the classification is sent to the haptic device via an internal bus.

Assignees

• Hewlett Packard Development Co

Inventors

• Chen Tai Hsiang
• Stancil Charles J
• Lin Wei-Hung
• Lin Kun-Hung

Classifications

• G06F3/04162

  for exchanging data with external devices, e.g. smart pens, via the digitiser sensing hardware · CPC title

• G06F3/048

  Interaction techniques based on graphical user interfaces [GUI] · CPC title

• G06F3/03545 Primary

  Pens or stylus · CPC title

• G06F3/016 Primary

  Input arrangements with force or tactile feedback as computer generated output to the user · CPC title

• G06F2203/0384

  Wireless input, i.e. hardware and software details of wireless interface arrangements for pointing devices · CPC title