Stylus input latency compensation system
US12293040B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2023 |
| Grant date | May 6, 2025 |
| Priority date | — |
| Expiry date | Apr 28, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0416
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A stylus provides input via a touchscreen comprising a touch sensor and a display. Latency between placement of a stylus tip and corresponding presentation of visual indicia on the display is reduced or eliminated by determining a predicted path of the stylus tip during a stroke. Visual indicia is presented on the display, based on the predicted path. Inputs from the touch sensor may include hover events associated with detection of the tip while not in contact with the touchscreen and touch events associated with presence of the tip on the touchscreen. A machine learning network may be trained to determine the predicted path. A portion of the network may be trained to accept dynamic-length sequences of events and generate fixed length sequences, reducing subsequent network complexity. A hand may be detected and used to determine the predicted path. The end of a stroke may be predicted, reducing overshoot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.