Patents Assigned to xMEMS Labs, Inc.
  • Patent number: 12131726
    Abstract: The sound suppression apparatus comprises a sound sensing device, configured to sense a sound; and a sound producing device comprising an air-pulse generating device, configured to generate a plurality of air pulses at an ultrasonic pulse rate. The plurality of air pulses at the ultrasonic pulse rate forms an anti-sound. The anti-sound comprises a component which is configured to suppress the sound.
    Type: Grant
    Filed: March 18, 2024
    Date of Patent: October 29, 2024
    Assignee: xMEMS Labs, Inc.
    Inventors: Jemm Yue Liang, Hsi-Sheng Chen, Chieh-Yao Chang
  • Patent number: 12107546
    Abstract: A driving circuit comprises a first capacitor. During a sampling operation, the first capacitor is coupled between a first and a second input terminals. During a transferring operation, an end of the first capacitor receives a voltage and another end of the first capacitor is coupled to a load. The driving circuit produces a first driving signal to drive the load, the first driving signal comprises a plurality of first portions with a first polarity and a plurality of second portions with a second polarity opposite to the first polarity. The plurality of first portions and the plurality of second portions form a generalized DSB-SC modulated component of the first driving signal, which is modulated according to an input signal between the first input terminal and the second input terminal.
    Type: Grant
    Filed: May 15, 2024
    Date of Patent: October 1, 2024
    Assignee: xMEMS Labs, Inc.
    Inventors: Jemm Yue Liang, Jing-Meng Liu
  • Publication number: 20240321255
    Abstract: The sound suppression apparatus comprises a sound sensing device, configured to sense a sound; and a sound producing device comprising an air-pulse generating device, configured to generate a plurality of air pulses at an ultrasonic pulse rate. The plurality of air pulses at the ultrasonic pulse rate forms an anti-sound. The anti-sound comprises a component which is configured to suppress the sound.
    Type: Application
    Filed: March 18, 2024
    Publication date: September 26, 2024
    Applicant: xMEMS Labs, Inc.
    Inventors: Jemm Yue Liang, Hsi-Sheng Chen, Chieh-Yao Chang
  • Patent number: 12088988
    Abstract: A venting device includes a first flap, which is configured to be actuated to swing upward during a rising time, and a second flap, which is disposed opposite to the first flap and configured to be actuated to swing downward during a falling time, a first actuating portion disposed on the first flap, and a second actuating portion disposed on the second flap. The venting device configured to form a vent is disposed within a wearable sound device or to be disposed within the wearable sound device. The vent is formed via applying a first voltage to the first actuating portion and applying a second voltage on the second actuating portion, such that the venting device gradually forms the vent.
    Type: Grant
    Filed: December 6, 2023
    Date of Patent: September 10, 2024
    Assignee: xMEMS Labs, Inc.
    Inventors: Wen-Chien Chen, Kai-Chieh Chang, Chiung C. Lo, Yuan-Shuang Liu
  • Patent number: 12075213
    Abstract: An air-pulse generating device includes a film structure. The film structure is driven by a modulation-driving signal, so as to form an amplitude-modulated ultrasonic air pressure variation with an ultrasonic carrier frequency. The film structure is driven by a first demodulation-driving signal and a second demodulation-driving signal, so as to form an opening at a rate synchronous with the ultrasonic carrier frequency. The air-pulse generating device produces a plurality of air pulses according to the amplitude-modulated ultrasonic air pressure variation.
    Type: Grant
    Filed: May 22, 2023
    Date of Patent: August 27, 2024
    Assignee: xMEMS Labs, Inc.
    Inventors: Jemm Yue Liang, Jye Ren
  • Publication number: 20240276139
    Abstract: An acoustic package structure includes a substrate, a covering structure and an acoustic chip. The covering structure is disposed on the substrate and has a plurality of first openings. The acoustic chip is disposed between the substrate and the covering structure, wherein the acoustic chip includes a membrane.
    Type: Application
    Filed: June 15, 2023
    Publication date: August 15, 2024
    Applicant: xMEMS Labs, Inc.
    Inventors: Chao-Yu Chen, Wen-Chien Chen, Chiung C. Lo, Hai-Hung Wen
  • Patent number: 12063470
    Abstract: An acoustic package structure includes a substrate, a covering structure and an acoustic chip. The covering structure is disposed on the substrate and has a plurality of first openings. The acoustic chip is disposed between the substrate and the covering structure, wherein the acoustic chip includes a membrane.
    Type: Grant
    Filed: June 15, 2023
    Date of Patent: August 13, 2024
    Assignee: xMEMS Labs, Inc.
    Inventors: Chao-Yu Chen, Wen-Chien Chen, Chiung C. Lo, Hai-Hung Wen
  • Publication number: 20240262679
    Abstract: A venting device includes an anchor structure and a membrane. The membrane is anchored on the anchor structure and configured to form a first vent and a second vent. The membrane includes a first flap, a second flap and a third flap. The membrane partitions a space into a first volume and a second volume, and the first volume and the second volume are connected when the first vent and the second vent are formed. The first flap is actuated to move toward a first direction and the second flap is actuated to move toward a second direction opposite to the first direction, so as to form the first vent. The first flap is actuated to move toward the first direction and the third flap is actuated to move toward the second direction opposite to the first direction, so as to form the second vent.
    Type: Application
    Filed: April 18, 2024
    Publication date: August 8, 2024
    Applicant: xMEMS Labs, Inc.
    Inventors: Chun-I Chang, Wen-Chien Chen, Chiung C. Lo, Kuan-Ju Tseng, Jemm Yue Liang, Martin George Lim
  • Publication number: 20240251199
    Abstract: An air-pulse generating device, a wearable sound device, a fanless blower, and an airflow producing method are disclosed. The air-pulse generating device includes a film structure, configured to be actuated to generate a plurality of air pulses at an ultrasonic pulse rate. The plurality of air pulses produces a net airflow toward one single direction.
    Type: Application
    Filed: April 1, 2024
    Publication date: July 25, 2024
    Applicant: xMEMS Labs, Inc.
    Inventors: Jemm Yue Liang, JengYaw Jiang
  • Patent number: 12028673
    Abstract: A driving circuit, configured to drive a venting device, includes a first node, a second node, and an amplifying circuit. The venting device, configured to be controlled to open a vent or seal the vent, includes a film structure, which includes a first flap and a second flap, and an actuator, which includes a first actuating portion disposed on the first flap and a second actuating portion disposed on the second flap. When the venting device is controlled to open the vent, the driving circuit generates a first voltage at the first node and generates a second voltage at the second node. When the venting device is controlled to seal the vent, the driving circuit generates a third voltage at both the first node and the second node. The first voltage is larger than the third voltage, and the third voltage is larger than the second voltage.
    Type: Grant
    Filed: August 7, 2023
    Date of Patent: July 2, 2024
    Assignee: xMEMS Labs, Inc.
    Inventors: Chiung C. Lo, Shun-Nan Tai, Wen-Chien Chen, Jing-Meng Liu
  • Patent number: 12022253
    Abstract: A venting device is disposed within a wearable sound device or to be disposed within the wearable sound device. The venting device includes an anchor structure, a film structure and an actuator. The film structure includes an anchor end anchored on the anchor structure and a free end, and the film structure is configured to form a vent or close the vent. The actuator is disposed on the film structure. The film structure partitions a space into a first volume and a second volume, and the first volume and the second volume are connected via the vent when the vent is formed. The venting device is controlled by the controller to seal the vent when the controller determines to close the vent.
    Type: Grant
    Filed: February 22, 2023
    Date of Patent: June 25, 2024
    Assignee: xMEMS Labs, Inc.
    Inventors: Chiung C. Lo, Martin George Lim, Jemm Yue Liang, Wen-Chien Chen
  • Publication number: 20240199410
    Abstract: A cantilever structure includes an anchor portion and a film structure. The film structure covers over a cavity and vibrates within the cavity. A length of the film structure is less than a width of the film structure. The anchor portion includes at least one protrusion protruding toward the cavity, and the film structure is anchored on the anchor portion with the at least one protrusion.
    Type: Application
    Filed: September 28, 2023
    Publication date: June 20, 2024
    Applicant: xMEMS Labs, Inc.
    Inventors: Jye Ren, Jemm Yue Liang, Wen-Chien Chen
  • Publication number: 20240174508
    Abstract: A wearable sound device includes a venting module, configured to form at least one vent to connect a volume within the wearable sound device and ambient, and a sound producing device, configured to produce sound according to an equalized input signal. The venting module, including at least one venting device, operates among a plurality of statuses corresponding to a plurality of degrees of opening. A controller generates the equalized input signal according to a degree of opening among the plurality of degrees of opening, in order to counteract a roll off caused by the at least one vent.
    Type: Application
    Filed: February 6, 2024
    Publication date: May 30, 2024
    Applicant: xMEMS Labs, Inc.
    Inventors: Yanchen Lu, Jemm Yue Liang, Michael David Housholder, JengYaw Jiang
  • Patent number: 11996866
    Abstract: A feedback control system configured to drive a load is disclosed. The feedback control system includes an up-sampling circuit, configured to perform an un-sampling operation on a source signal and produce an up-sampled signal with an up-sampling frequency according to the up-sampled signal and a feedback signal from the load; a delta circuit, coupled to the up-sampling circuit and configured to produce a delta signal; a sigma circuit, configured to produce a density modulation signal according to the delta signal; and a driving device, configured to drive the load according to the density modulation signal with the up-sampling frequency.
    Type: Grant
    Filed: March 6, 2023
    Date of Patent: May 28, 2024
    Assignee: xMEMS Labs, Inc.
    Inventors: Jemm Yue Liang, Hsi-Sheng Chen, Chieh-Yao Chang, Hung-Chi Huang, Jing-Meng Liu
  • Patent number: 11991497
    Abstract: An acoustic device includes a first sound producing component and a back cavity structure. The first sound producing component has a first front side and a first back side, wherein the first sound producing component is a high frequency sound unit, and the first front side faces a sound propagating opening of the acoustic device. The back cavity structure is connected to the first back side of the first sound producing component. The first sound producing component produces a first acoustic wave from the first front side towards the sound propagating opening, and the first sound producing component produces a second acoustic wave from the first back side towards a back cavity of the back cavity structure. The back cavity structure is configured to flatten a peak or a dip of a frequency response of the first sound producing component.
    Type: Grant
    Filed: June 16, 2023
    Date of Patent: May 21, 2024
    Assignee: xMEMS Labs, Inc.
    Inventors: Chao-Yu Chen, Chiung C. Lo, Jemm Yue Liang, Wen-Chien Chen, Jye Ren
  • Publication number: 20240147139
    Abstract: An acoustic device includes a first sound producing component and a back cavity structure. The first sound producing component has a first front side and a first back side, wherein the first sound producing component is a high frequency sound unit, and the first front side faces a sound propagating opening of the acoustic device. The back cavity structure is connected to the first back side of the first sound producing component. The first sound producing component produces a first acoustic wave from the first front side towards the sound propagating opening, and the first sound producing component produces a second acoustic wave from the first back side towards a back cavity of the back cavity structure. The back cavity structure is configured to flatten a peak or a dip of a frequency response of the first sound producing component.
    Type: Application
    Filed: June 16, 2023
    Publication date: May 2, 2024
    Applicant: xMEMS Labs, Inc.
    Inventors: Chao-Yu Chen, Chiung C. Lo, Jemm Yue Liang, Wen-Chien Chen, Jye Ren
  • Patent number: 11972749
    Abstract: A wearable sound device includes a venting device including a film structure and an actuator and a driving circuit configured to be controlled by a controller and to drive the actuator, such that the film structure is controlled to form a vent or to seal the vent. The controller is coupled to a sensing device configured to generate a sensing result and determine whether to seal the vent according to the sensing result. The film structure partitions a space within the wearable sound device into a first volume and a second volume. The first volume is connected to or to be connected to an ear canal of a wearable sound device user. The second volume is connected to or to be connected to an ambient of the wearable sound device. The first volume and the second volume are connected via the vent when the vent is formed.
    Type: Grant
    Filed: April 20, 2023
    Date of Patent: April 30, 2024
    Assignee: xMEMS Labs, Inc.
    Inventors: James Wargnier, Michael David Housholder, Yanchen Lu, JengYaw Jiang
  • Patent number: 11974104
    Abstract: A linearity compensation method for a sound producing device (SPD) includes steps of: applying a test signal on a first SPD; obtaining an acoustic measurement result generated from the first SPD according to the test signal; generating a compensation curve according to the acoustic measurement result; and performing a linearity compensation operation on a second SPD according to the compensation curve.
    Type: Grant
    Filed: January 13, 2022
    Date of Patent: April 30, 2024
    Assignee: xMEMS Labs, Inc.
    Inventors: Jemm Yue Liang, Yanchen Lu, Hao-Hsin Chang
  • Publication number: 20240128928
    Abstract: A demodulation signal generator, coupled to an air-pulse generator comprising a flap pair, includes a resonance circuit. The resonance circuit produces a first demodulation signal and a second demodulation signal. The resonance circuit and the flap pair co-perform a resonance operation, such that the first demodulation signal and the second demodulation signal are generated via the co-performed resonance operation and have opposite polarity. The flap pair performs a differential movement to form an opening to perform a demodulation operation on a modulated air pressure variation.
    Type: Application
    Filed: December 26, 2023
    Publication date: April 18, 2024
    Applicant: xMEMS Labs, Inc.
    Inventors: Jemm Yue Liang, Jing-Meng Liu, Jye Ren
  • Publication number: 20240121547
    Abstract: A venting device includes a first flap, which is configured to be actuated to swing upward during a rising time, and a second flap, which is disposed opposite to the first flap and configured to be actuated to swing downward during a falling time, a first actuating portion disposed on the first flap, and a second actuating portion disposed on the second flap. The venting device configured to form a vent is disposed within a wearable sound device or to be disposed within the wearable sound device. The vent is formed via applying a first voltage to the first actuating portion and applying a second voltage on the second actuating portion, such that the venting device gradually forms the vent.
    Type: Application
    Filed: December 6, 2023
    Publication date: April 11, 2024
    Applicant: xMEMS Labs, Inc.
    Inventors: Wen-Chien Chen, Kai-Chieh Chang, Chiung C. Lo, Yuan-Shuang Liu