Method and system for communication between touch control device and external device
US9952712B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2016 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Aug 16, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0446
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method for communication between a touch control device and an external device, comprising the following steps: when an external device communicates with a touch screen, sending, by the external device, 1-bit data to the touch screen within each sending period, wherein the 1-bit data sent within each sending period is a combination of a valid signal and an invalid signal, or an invalid signal; scanning, by the touch screen, the bit data based on a predetermined scanning period to obtain N frames of scanned data, wherein the predetermined scanning period is 1/N of the sending period; obtaining a strength of an LCD interference signal according to one frame of data having a minimum signal strength among the N frames of scanned data; and reducing noise for the N frames of scanned data according to the strength of the LCD interference signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.