Stylus and touch control method
AssigneeASUSTeK COMPUTER INC.
InventorsChin-Wen Lin, Hung-Yi Lin
Life of this patent
Estimating the term…
Abstract
A stylus adapted to a touch panel is provided. The stylus comprises a barrel, a driving circuit disposed inside the barrel and configured to generate a driving signal, a conductive tip disposed at an end of the barrel and electrically connected to the driving circuit to receive the driving signal, and a conductive grip disposed at the barrel and electrically isolated from the conductive tip. The conductive tip is capacitively coupled with the touch panel via the driving signal to form a first induced capacitor on the touch panel. A capacitance effect is generated between the conductive grip and the touch panel to form a second induced capacitor on the touch panel. A touch control method is also provided.
Claims10
A stylus, adapted to a touch panel, comprising:
- a barrel;
- a driving circuit, disposed inside the barrel and configured to generate a driving signal;
- a conductive tip, disposed at an end of the barrel and electrically connected to the driving circuit to receive the driving signal, the conductive tip is capacitively coupled with the touch panel via the driving signal to form a first induced capacitor on the touch panel;
- and
- a conductive grip, disposed at the barrel and electrically isolated from the conductive tip and the driving circuit, when the conductive grip is connected to ground a capacitance effect is generated between the conductive grip and the touch panel to form a second induced capacitor on the touch panel.
A touch control method, adapted for a stylus while executing an touch input on a touch panel, the stylus includes a barrel, a conductive tip disposed at an end of the barrel, and a conductive grip disposed at the barrel and electrically isolated from the conductive tip, the touch control method comprising:
- generating a driving signal by the conductive tip to form a first induced capacitor on the touch panel, and generating a capacitance effect between the touch panel and the conductive grip by having the conductive grip be connected to ground to form a second induced capacitor;
- calculating a touch control coordinate of the first induced capacitor on the touch panel;
- calculating a projection coordinate of the second induced capacitor on the touch panel;
- and
- calculating a tilt direction and a tilt angle of the stylus relative to the touch panel according to a relative position relationship between the touch control coordinate and the projection coordinate.
Dependencies are inferred from the claim text.