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US 12,001,631 B2Granted
Touch sensing device and touch sensing method
AssigneeLx Semicon Co., Ltd.
InventorHo Sup Choi
Life of this patent
Estimating the term…
Abstract
Embodiments relate to a technology of sensing a position of a pen in a touch panel in which a plurality of touch electrodes are disposed. In order to reduce the noise of data when sensing the position of a pen, a method of calculating a position by using data of all data slots for a region preset on the basis of a previous position of the pen.
Claims15
A touch sensing device comprising:
- a touch sensing circuit configured to identify touch coordinates on the basis of sensing values for a plurality of touch electrodes disposed in a panel,
- wherein, when a driving signal comprising a base slot and a plurality of data slots, is supplied to the plurality of touch electrodes, the touch sensing circuit determines a temporary position of a pen on the basis of data included in the base slot of the driving signal and acquires data values for the base slot and the plurality of data slots with respect to each of the touch electrodes in a region of interest including the determined temporary position of the pen.
A touch sensing method comprising:
- supplying a driving signal comprising a base slot and a plurality of data slots, to a panel in which a plurality of touch electrodes are disposed;
- determining a position of a pen on the basis of data included in the base slot of the driving signal;
- and
- setting a region of interest including the determined position of the pen and acquiring data values for the base slot and the plurality of data slots with respect to each of touch electrodes in the region of interest.
1 more element
A touch sensing device comprising:
- a touch sensing circuit configured to identify touch coordinates on the basis of sensing values for a plurality of touch electrodes which are disposed in a first direction and a second direction, which is perpendicular to the first direction,
- wherein, when a driving signal comprising a base slot and a plurality of data slots, is supplied to the plurality of touch electrodes, the touch sensing circuit determines a position of a pen on the basis of data included in the base slot of the driving signal and updates a position of the pen by acquiring data values for the base slot and the plurality of data slots with respect to each of touch electrodes in a region of interest including the determined position of the pen.
Dependencies are inferred from the claim text.