US 12,228,432 B2
Capacitive-sensing rotary encoder
Lichang Cheng, Shanghai (CN); Zichen Qiu, Shanghai (CN); Songhua Hu, Shanghai (CN); and Yang Li, Shanghai (CN)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Sep. 5, 2023, as Appl. No. 18/460,915.
Application 18/460,915 is a continuation of application No. 17/326,936, filed on May 21, 2021, granted, now 11,747,174.
Application 17/326,936 is a continuation of application No. PCT/CN2020/137605, filed on Dec. 18, 2020.
Claims priority of application No. PCT/CN2020/137605 (WO), filed on Dec. 18, 2020.
Prior Publication US 2023/0408301 A1, Dec. 21, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G01D 5/241 (2006.01); G01R 27/26 (2006.01)
CPC G01D 5/2417 (2013.01) [G01D 5/2415 (2013.01); G01D 5/241 (2013.01); G01R 27/2605 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
transmitting a first signal to a transmit region of a stator, wherein the transmit region is located on a first concentric area of the stator;
receiving a second signal from a receive region of the stator, wherein:
the receive region is located on a second concentric area of the stator;
the second signal is based on an interaction of the first signal with a conductor member disposed on a rotor positioned adjacently to the stator; and
wherein the conductor member comprises a conductor lobe; and
determining, based on the second signal, a proximity of the conductor lobe to the receive region.