Method and system for updating reference data of capacitive multi-touch screen
US9134850B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2013 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Oct 22, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/044
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A reference data updating method and system for a capacitive multi-touch screen are disclosed. The method includes the steps of step A: one-frame sampling touch detection nodes, calculating a difference between sampled data of each touch detection node and corresponding current reference data and saving the difference as detection data to obtain a current detection data frame; step B: judging whether the current detection data frame is a damaged detection data frame; and step C: executing a touch screen reference update processing procedure under abnormal condition if the current detection data frame is a damaged detection data frame; otherwise, executing a touch screen reference update processing procedure under normal condition. The disclosed method and system can be used in capacitive multi-touch screens fabricated with different materials in different processes and having difference specifications to timely and reliably update the reference data, thereby increasing the reliability of the capacitive multi-touch screens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.