公开(公告)号：US09380380B2

公开(公告)日：2016-06-28

申请号：US13936110

申请日：2013-07-05

Applicant: Omron Corporation ,  STMICROELECTRONICS S.R.L.

Inventor： Takashi Kasai ,  Shobu Sato ,  Yuki Uchida ,  Igino Padovani ,  Filippo David ,  Sebastiano Conti ,  Martino Zerbini ,  Luca Molinari

IPC: H04R5/00 ,  H04R3/00 ,  H04R19/00 ,  H04R19/01 ,  H04R31/00 ,  H04R1/08

CPC classification number: H04R3/00 ,  H01L2224/48137 ,  H01L2924/16152 ,  H04R1/086 ,  H04R19/005 ,  H04R19/016 ,  H04R31/00

Abstract: The present disclosure is directed to an acoustic transducer configured to detect a sound wave according to changes in capacitances between a vibrating electrode and a fixed electrode. At least one of the vibrating electrode and the fixed electrode being divided into a plurality of divided electrodes, and the plurality of divided electrodes outputting electrical signals. The disclosure includes a digital interface circuit coupled to the divided electrodes. The circuit includes a recombination stage, which supplies a mixed signal by combining the first digital processed signal and the second digital processed signal with a respective weight that is a function of a first level value of the first processed signal. An output stage is included, which supplies, selectively and alternatively, a first processed signal, a second processed signal, or a mixed signal.

Abstract translation: 本公开涉及一种被配置为根据振动电极和固定电极之间的电容的变化来检测声波的声学换能器。 振动电极和固定电极中的至少一个分为多个分割电极，多个分割电极输出电信号。 本公开包括耦合到分割电极的数字接口电路。 电路包括复合级，其通过将第一数字处理信号和第二数字处理信号组合为具有作为第一处理信号的第一电平值的函数的相应权重来提供混合信号。 包括输出级，其选择性地或替代地提供第一处理信号，第二处理信号或混合信号。

公开(公告)号：US09609410B2

公开(公告)日：2017-03-28

申请号：US14626636

申请日：2015-02-19

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Eugenio Miluzzi ,  Martino Zerbini ,  Davide Negri

IPC: H04R3/00 ,  H04R1/08 ,  H04R1/04

CPC classification number: H04R1/08 ,  H04R1/04 ,  H04R3/00 ,  H04R3/005 ,  H04R2201/003

Abstract: A processing circuit for a digital sensor, including: a control stage, which generates a control signal; a multiplexing stage, which may be electrically coupled to a plurality of sensing structures for receiving corresponding detection signals and generates a multiplexed signal, on the basis of one between the detection signals, as a function of the control signal; an analog-to-digital conversion stage, which is connected to the multiplexing stage and generates an encoded signal on the basis of the multiplexed signal; and an equalizer, which multiplies the encoded signal by a coefficient that depends upon the control signal.

公开(公告)号：US09807500B2

公开(公告)日：2017-10-31

申请号：US15140345

申请日：2016-04-27

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Martino Zerbini ,  Luca Molinari

IPC: H04R3/00 ,  H04R19/00 ,  H04R1/04 ,  H04R29/00 ,  H04R25/00

CPC classification number: H04R3/005 ,  H04R1/04 ,  H04R19/005 ,  H04R25/407 ,  H04R29/004 ,  H04R2201/003

Abstract: A interface circuit for an acoustic transducer provided with a first detection structure and a second detection structure has: a first input and a second input; a first processing path and a second processing path coupled, respectively, to the first input and second input and supply a first processed signal and a second processed signal; and a recombination stage, which supplies a mixed signal by combining the first processed signal and the second processed signal with a respective weight that is a function of a first level value of the first processed signal. The first and second inputs receive a respective detection signal associated, respectively, to the first detection structure and to the second detection structure of the acoustic transducer; and an output stage the first processed signal, the second processed signal or the mixed signal, on the basis of a second level value of the first processed signal.

公开(公告)号：US20160171966A1

公开(公告)日：2016-06-16

申请号：US14863228

申请日：2015-09-23

Applicant: STMicroelectronics S.r.l. ,  STMicroelectronics (Shenzhen) R&D Co. Ltd

Inventor： Luca Molinari ,  Xi Chun Ma ,  Sandro Dalle Feste ,  Martino Zerbini

IPC: G10K11/178 ,  H04R3/02

CPC classification number: G10K11/178 ,  G10K2210/1081 ,  G10K2210/3028 ,  G10K2210/3051 ,  H04R1/1083 ,  H04R2410/05 ,  H04R2460/01

Abstract: An active noise cancelling device including a sensor configured to convert acoustic signals into first audio signals and a speaker acoustically coupled to the sensor A control stage is configured to control the speaker based on the first audio signals to cause the speaker to produce cancelling acoustic waves that tend to suppress acoustic noise components in the acoustic signals. The control stage includes sigma-delta modulator digital filters.

Abstract translation: 一种主动噪声消除装置，包括被配置为将声信号转换为第一音频信号的传感器和声学耦合到传感器A控制级的扬声器，被配置为基于第一音频信号来控制扬声器，以使扬声器产生消除声波， 倾向于抑制声学信号中的声学噪声分量。 控制级包括Σ-Δ调制器数字滤波器。

公开(公告)号：US20140133677A1

公开(公告)日：2014-05-15

申请号：US13936096

申请日：2013-07-05

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Martino Zerbini ,  Luca Molinari

IPC: H04R3/00

CPC classification number: H04R3/005 ,  H04R1/04 ,  H04R19/005 ,  H04R25/407 ,  H04R29/004 ,  H04R2201/003

Abstract: A interface circuit for an acoustic transducer provided with a first detection structure and a second detection structure has: a first input and a second input; a first processing path and a second processing path coupled, respectively, to the first input and second input and supply a first processed signal and a second processed signal; and a recombination stage, which supplies a mixed signal by combining the first processed signal and the second processed signal with a respective weight that is a function of a first level value of the first processed signal. The first and second inputs receive a respective detection signal associated, respectively, to the first detection structure and to the second detection structure of the acoustic transducer; and an output stage the first processed signal, the second processed signal or the mixed signal, on the basis of a second level value of the first processed signal.

Abstract translation: 一种用于具有第一检测结构和第二检测结构的声换能器的接口电路，具有：第一输入端和第二输入端; 第一处理路径和第二处理路径分别耦合到第一输入和第二输入，并提供第一处理信号和第二处理信号; 以及复合级，其通过将第一处理信号和第二处理信号组合为具有作为第一处理信号的第一电平值的函数的相应权重来提供混合信号。 第一和第二输入分别接收与第一检测结构和声换能器的第二检测结构相关联的检测信号; 基于第一处理信号的第二电平值，输出第一处理信号，第二处理信号或混合信号。

公开(公告)号：US10325584B2

公开(公告)日：2019-06-18

申请号：US14863228

申请日：2015-09-23

Applicant: STMicroelectronics S.r.l. ,  STMicroelectronics (Shenzhen) R&D Co. Ltd

Inventor： Luca Molinari ,  Xi Chun Ma ,  Sandro Dalle Feste ,  Martino Zerbini

IPC: H04R1/10 ,  G10K11/178

Abstract: An active noise cancelling device including a sensor configured to convert acoustic signals into first audio signals and a speaker acoustically coupled to the sensor A control stage is configured to control the speaker based on the first audio signals to cause the speaker to produce cancelling acoustic waves that tend to suppress acoustic noise components in the acoustic signals. The control stage includes sigma-delta modulator digital filters.

公开(公告)号：US09456274B2

公开(公告)日：2016-09-27

申请号：US13936096

申请日：2013-07-05

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Martino Zerbini ,  Luca Molinari

IPC: H04B1/00 ,  H04R3/00 ,  H03G3/00 ,  H04R19/00 ,  H04R25/00

CPC classification number: H04R3/005 ,  H04R1/04 ,  H04R19/005 ,  H04R25/407 ,  H04R29/004 ,  H04R2201/003

Abstract: A interface circuit for an acoustic transducer provided with a first detection structure and a second detection structure has: a first input and a second input; a first processing path and a second processing path coupled, respectively, to the first input and second input and supply a first processed signal and a second processed signal; and a recombination stage, which supplies a mixed signal by combining the first processed signal and the second processed signal with a respective weight that is a function of a first level value of the first processed signal. The first and second inputs receive a respective detection signal associated, respectively, to the first detection structure and to the second detection structure of the acoustic transducer; and an output stage the first processed signal, the second processed signal or the mixed signal, on the basis of a second level value of the first processed signal.

Abstract translation: 一种用于具有第一检测结构和第二检测结构的声换能器的接口电路，具有：第一输入端和第二输入端; 第一处理路径和第二处理路径分别耦合到第一输入和第二输入，并提供第一处理信号和第二处理信号; 以及复合级，其通过将第一处理信号和第二处理信号组合为具有作为第一处理信号的第一电平值的函数的相应权重来提供混合信号。 第一和第二输入分别接收与第一检测结构和声换能器的第二检测结构相关联的检测信号; 基于第一处理信号的第二电平值，输出第一处理信号，第二处理信号或混合信号。

公开(公告)号：US20140010374A1

公开(公告)日：2014-01-09

申请号：US13936110

申请日：2013-07-05

Applicant: STMicroelectronics S.r.I. ,  Omron Corporation

Inventor： Takashi Kasai ,  Shobu Sato ,  Yuki Uchida ,  Igino Padovani ,  Filippo David ,  Sebastiano Conti ,  Martino Zerbini ,  Luca Molinari

IPC: H04R3/00

CPC classification number: H04R3/00 ,  H01L2224/48137 ,  H01L2924/16152 ,  H04R1/086 ,  H04R19/005 ,  H04R19/016 ,  H04R31/00

Abstract: The present disclosure is directed to an acoustic transducer configured to detect a sound wave according to changes in capacitances between a vibrating electrode and a fixed electrode. At least one of the vibrating electrode and the fixed electrode being divided into a plurality of divided electrodes, and the plurality of divided electrodes outputting electrical signals. The disclosure includes a digital interface circuit coupled to the divided electrodes. The circuit includes a recombination stage, which supplies a mixed signal by combining the first digital processed signal and the second digital processed signal with a respective weight that is a function of a first level value of the first processed signal. An output stage is included, which supplies, selectively and alternatively, a first processed signal, a second processed signal, or a mixed signal.

Abstract translation: 本公开涉及一种被配置为根据振动电极和固定电极之间的电容的变化来检测声波的声学换能器。 振动电极和固定电极中的至少一个分为多个分割电极，多个分割电极输出电信号。 本公开包括耦合到分割电极的数字接口电路。 电路包括复合级，其通过将第一数字处理信号和第二数字处理信号组合为具有作为第一处理信号的第一电平值的函数的相应权重来提供混合信号。 包括输出级，其选择性地或替代地提供第一处理信号，第二处理信号或混合信号。