US 12,093,472 B2
Stylus and control method therefor, and electronic device
Conghua Fu, Dongguan (CN); and Guohong Liu, Dongguan (CN)
Assigned to VIVO MOBILE COMMUNICATION CO., LTD., Dongguan (CN)
Filed by VIVO MOBILE COMMUNICATION CO., LTD., Dongguan (CN)
Filed on Apr. 11, 2023, as Appl. No. 18/133,506.
Application 18/133,506 is a continuation of application No. PCT/CN2021/124099, filed on Oct. 15, 2021.
Claims priority of application No. 202011104996.2 (CN), filed on Oct. 15, 2020.
Prior Publication US 2023/0259221 A1, Aug. 17, 2023
Int. Cl. G06F 3/038 (2013.01); G06F 3/0354 (2013.01); G06F 3/044 (2006.01)
CPC G06F 3/038 (2013.01) [G06F 3/03545 (2013.01); G06F 3/0442 (2019.05)] 18 Claims
OG exemplary drawing
 
1. A stylus, comprising:
a device body and a touch part, wherein the touch part is arranged at at least one end of the device body;
a first electrode, wherein the first electrode is arranged at one end of the touch part far away from the device body;
a second electrode, wherein the second electrode is arranged on the touch part, and the second electrode and the first electrode are spaced apart from each other;
a third electrode, wherein the third electrode is arranged on the touch part, and the third electrode is spaced apart from each of the first electrode and the second electrode; and
a control circuit, wherein the control circuit is arranged on the device body, and the control circuit is electrically connected to each of the first electrode, the second electrode, and the third electrode, wherein the control circuit comprises a coding circuit, a data communication circuit, and a switching circuit,
wherein:
the coding circuit and the data communication circuit are each electrically connected to a first end of the switching circuit,
the second electrode and the third electrode are each electrically connected to a second end of the switching circuit, and
the stylus has a first working state and a second working state,
wherein:
at least one of the second electrode or the third electrode is electrically connected to the coding circuit through the switching circuit when the stylus is in the first working state; and
at least one of the second electrode or the third electrode is electrically connected to the data communication circuit through the switching circuit when the stylus is in the second working state,
wherein when the stylus is matched with a touch device, a first capacitor is formed between the first electrode and a first region of the touch device, a second capacitor is formed between the second electrode and a second region of the touch device, and a third capacitor is formed between the third electrode and a third region of the touch device, wherein the touch device comprises a touch surface, and the first region, the second region, and the third region are spaced apart from each other on the touch surface, wherein voltage pulse signals generated by the control circuit are individually sent to the touch device through the first capacitor, the second capacitor and the third capacitor, for the touch device to sense the first region, second region, and third region, respectively, on the touch device, wherein
the at least one of the second electrode or the third electrode is configured to detect included angle information, and the at least one of the second electrode or the third electrode is configured to transmit data communication information, wherein the included angle information is information of an included angle between the stylus and the touch device.