公开(公告)号：US12267068B2

公开(公告)日：2025-04-01

申请号：US18579835

申请日：2022-07-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Ryo Nakae ,  Takehiko Nara ,  Naoki Tanaka

IPC: H03K17/96 ,  H01H13/00 ,  H01H13/52 ,  H03K17/975 ,  H04N23/51 ,  G06F3/041

Abstract: A detection method includes: obtaining periodically and repeatedly sensor values output from a capacitive sensor; determining whether the sensor values obtained exceed threshold Th1; calculating, as first difference value Δ1X of each of target sensor values CX, a difference between target sensor value CX and sensor value CX+1 immediately before the target sensor value; calculating, as second difference value Δ2X of each of target sensor values CX, a difference between (i) first difference value Δ1X of target sensor value CX and (ii) first difference value Δ1X+1 of sensor value CX+1 immediately before target sensor value CX; comparing each of second difference values Δ2X calculated and threshold Th2, and selecting one sensor value CRet based on a result of the comparing; and outputting the one sensor value CRet selected.

公开(公告)号：US12224135B2

公开(公告)日：2025-02-11

申请号：US18040263

申请日：2021-08-03

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Ryo Nakae ,  Yasunori Yanai ,  Takehiko Nara ,  Yuta Saito

IPC: H01H25/04 ,  H01H13/64

Abstract: This input system includes an input device, an electrostatic sensor, a conduction sensor, a controller, and a determiner. When a movable contact of the input device is pressed, electrostatic capacitance between a first electrode and a second electrode changes, and when the movable contact of the input device is further pressed after the electrostatic capacitance changes, a third electrode and a fourth electrode are electrically conductive to each other. The conduction sensor detects the conduction between the third electrode and the fourth electrode. The controller switches the sensing operation of the electrostatic sensor from the OFF state to the ON state after the conduction sensor detects the conduction between the third electrode and the fourth electrode. In the ON state, the electrostatic sensor outputs a detected value related to the electrostatic capacitance between the first electrode and the second electrode.