US 12,224,745 B2
Capacitance detection circuit and method, and electronic device
Yuan Dai, Shenzhen (CN); Ruirui Zhang, Shenzhen (CN); Ke Chen, Shenzhen (CN); Jie Lai, Shenzhen (CN); Siyuan Liu, Shenzhen (CN); and Zhengyou Zhang, Shenzhen (CN)
Assigned to TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED, Shenzhen (CN)
Filed by Tencent Technology (Shenzhen) Company Limited, Shenzhen (CN)
Filed on Sep. 13, 2022, as Appl. No. 17/944,061.
Application 17/944,061 is a continuation of application No. PCT/CN2021/103066, filed on Jun. 29, 2021.
Claims priority of application No. 202010706241.3 (CN), filed on Jul. 21, 2020.
Prior Publication US 2023/0019197 A1, Jan. 19, 2023
Int. Cl. H03K 17/96 (2006.01); B25J 13/08 (2006.01); G01R 27/26 (2006.01); G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC H03K 17/9622 (2013.01) [B25J 13/084 (2013.01); G01R 27/2605 (2013.01); G06F 3/0418 (2013.01); G06F 3/0446 (2019.05); H03K 2217/96074 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A circuit for detecting capacitance of a capacitor element within a capacitor array, the circuit comprising:
a capacitance detection module, configured to detect a first capacitance of a first capacitor set, a second capacitance of a second capacitor set, and a third capacitance of a third capacitor set, the first capacitor set comprising the capacitor element and a row capacitor element in a same row of the capacitor array as the capacitor element, the second capacitor set comprising the capacitor element and a column capacitor element in a same column of the capacitor array as the capacitor element, the third capacitor set comprising the row capacitor element and the column capacitor element; and
a processing module, configured to obtain the capacitance of the capacitor element according to the first capacitance, the second capacitance and the third capacitance by:
determining the capacitance of the capacitor element by the formula:
Ct=(C1+C2−C3)/2,
wherein Ct is the capacitance of the capacitor element, C1 is the first capacitance, C2 is the second capacitance, and C3 is the third capacitance.