Touch driving integrated circuit and operation method thereof and touch device

Abstract

This invention provides a touch driving integrated circuit (IC), an operation method thereof, and a touch device. The touch driving IC is used to drive a touch panel. The touch driving IC includes a touch interface circuit and an operation circuit. The touch interface circuit is coupled to the touch panel. The touch interface circuit communicates with an active stylus. The operation circuit is coupled to the touch interface circuit. In response to a stylus tip or a stylus tail of the active stylus touching the touch panel, the operation circuit determines a touch position of the active stylus. Based on stylus gesture information, the operation circuit determines whether to perform an eraser operation or a writing operation. The stylus gesture information includes a relative tilt angle between a tilt angle of the active stylus and a tilt angle of the touch panel.

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