| 摘要 |
A touch module includes a touch device, a stylus, and a processing unit. The stylus includes a body, a motor, an angle encoder, and a distance sensor. The angle encoder and the distance sensor are disposed on a rotating shaft of the motor. The distance sensor detects relative distances between itself and first, second, third, and fourth sides of a front frame of the touch device respectively. The processing unit is disposed in the body or the touch device for controlling the rotating shaft to rotate when a mark of the body points to the first side, calculating rotating angles of the rotating shaft and determining whether the rotating shaft makes one rotation according to encoded data of the angle encoder, and calculating four local minimum distances according to relationship of the rotating angles and the relative distances for positioning the stylus on a touch surface of the touch device. |
| 主权项 |
1. A touch module comprising:
a touch device having a front frame and a touch surface, the front frame being disposed around the touch surface and having a first side, a second side, a third side, and a fourth side, the first side being opposite to the third side, the second side being opposite to the fourth side; a stylus coupled to the touch device in a wireless or wired manner, the stylus comprising:
a body having a mark formed thereon;a motor disposed in the body and having a rotating shaft;an angle encoder disposed on the rotating shaft for generating encoded data with rotation of the rotating shaft; anda distance sensor disposed on the rotating shaft to rotate cooperatively with the rotating shaft, for detecting a plurality of relative distances between itself and the first side, the second side, the third side, and the fourth side of the front frame respectively during the rotating shaft makes one rotation; and a processing unit disposed in the body or the touch device for controlling the motor to rotate the rotating shaft when the mark of the body points to the first side, calculating a plurality of rotating angles of the rotating shaft according to the encoded data, determining whether the rotating shaft makes one rotation according to the encoded data, and calculating four local minimum distances according to relationship of the plurality of rotating angles and the plurality of relative distances; wherein the touch device positions the stylus on the touch surface according to the four local minimum distances calculated by the processing unit, and the four local minimum distances are equal to a first minimum distance between the distance sensor and the first side, a second minimum distance between the distance sensor and the second side, a third minimum distance between the distance sensor and the third side, and a fourth minimum distance between the distance sensor and the fourth side respectively. |
