Title:
ELECTRONIC DEVICE, AND METHOD FOR DETERMINING IN-PLACE OF STYLUS
Document Type and Number:
WIPO Patent Application WO/2023/151403
Kind Code:
A1
Abstract:
The present application relates to the technical field of terminals, and provides an electronic device, and a method for determining in-place of a stylus. The electronic device comprises an inverter circuit, a resonant circuit, a controller, a resonant capacitor adjustment circuit, and a Q value detection circuit; the resonant circuit comprises a first capacitor and a transmitting coil connected in series; an output end of the inverter circuit is connected to the resonant circuit; the resonant capacitor adjustment circuit is connected to the resonant circuit; the Q value detection circuit is connected to the resonant circuit; the resonant capacitor adjustment circuit at least comprises a second capacitor; during the detection of a Q value of the transmitting coil, the controller controls the resonant capacitor adjustment circuit to work, and the first capacitor and the second capacitor are connected in parallel; the Q value detection circuit is used for obtaining a voltage signal representing the Q value; and the controller obtains the Q value according to the voltage signal, and when the Q value is greater than a preset threshold, determines that the stylus is attached to the electronic device. During the detection of the Q value, the resonant capacitor adjustment circuit participates in the work, so that the capacitance of an oscillating capacitor is increased, the speed of oscillation decay is slowed down, and the Q value is accurately detected.
Inventors:
ZHANG YOUJUN (CN)
WU YUAN (CN)
ZHANG WUJIA (CN)
WEN YULEI (CN)
HU JIE (CN)
WU YUAN (CN)
ZHANG WUJIA (CN)
WEN YULEI (CN)
HU JIE (CN)
Application Number:
PCT/CN2022/142069
Publication Date:
August 17, 2023
Filing Date:
December 26, 2022
Export Citation:
Assignee:
HONOR DEVICE CO LTD (CN)
International Classes:
G06F1/16
Domestic Patent References:
| WO2021210855A1 | 2021-10-21 | |||
| WO2017168873A1 | 2017-10-05 |
Foreign References:
| CN113809835A | 2021-12-17 | |||
| CN113629894A | 2021-11-09 | |||
| CN202210121909A | 2022-02-09 |
Attorney, Agent or Firm:
SHENPAT INTELLECTUAL PROPERTY AGENCY (CN)
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