Method and system for reduced power touch input detection on an electronic device using reduced scanning
US9507470B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 16, 2013 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Dec 16, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/021
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present invention can be configured to recognize and/or track certain types of touch input detected by a touch sensor, such as stylus input, during the performance of standard “full” touch scans in which each drive line of the touch sensor is generally scanned. Upon detection of these input types, “partial” touch scan operations can advantageously be performed which can dynamically reduce the number of lines scanned in a power-saving manner. These partial scans can be configured to intelligently initially scan the area where these input types were last detected so that there is minimal need to return to a previous “full” scan mode. If these specified touch inputs types are not detected during a “partial” scan mode, the touch sensor can be restored to a “full” scan mode until a subsequent detection of the touch input is determined, in which the touch sensor can be returned to a “partial” scan mode. Each time a partial scan is used, power is saved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.