公开(公告)号：US20220155337A1

公开(公告)日：2022-05-19

申请号：US17442300

申请日：2020-01-09

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Keisuke KURODA ,  Takuya KAJIWARA ,  Junji NAKATSUKA ,  Masaaki NAGAI

IPC: G01P21/00 ,  G01P15/125 ,  G01P15/18

Abstract: A signal processing device includes detection circuitry and correction circuitry. The detection circuitry includes a first detection unit and a second detection unit. The first detection unit generates at least one detection signal based on an associated one of output signals corresponding to each of at least two directions. The second detection unit has a broader detection range than the first detection unit and generates at least one correction signal based on the associated one of the output signals corresponding to each of the at least two directions. The correction circuitry corrects an associated one of the detection signals corresponding to each of the at least two directions with at least an associated one of the correction signals corresponding to at least one direction, other than one direction subjected to correction, out of the at least two directions.

公开(公告)号：US20220155334A1

公开(公告)日：2022-05-19

申请号：US17442272

申请日：2020-01-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Keisuke KURODA ,  Takuya KAJIWARA ,  Junji NAKATSUKA ,  Masaaki NAGAI

IPC: G01P15/125 ,  G01P15/18

Abstract: A signal processing device includes a detection circuit, a correction circuit, and a comparator circuit. The detection circuit generates a first detection signal, based on an output signal of a capacitive detection element that detects inertial force. The correction circuit corrects non-linearity of the first detection signal and outputs a second detection signal thus corrected. The comparator circuit compares the first detection signal and the second detection signal with each other and outputs a comparison signal representing a result of comparison.