Patents Assigned to xMEMS Labs, Inc.
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Patent number: 12131726Abstract: 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: GrantFiled: March 18, 2024Date of Patent: October 29, 2024Assignee: xMEMS Labs, Inc.Inventors: Jemm Yue Liang, Hsi-Sheng Chen, Chieh-Yao Chang
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Patent number: 12107546Abstract: 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: GrantFiled: May 15, 2024Date of Patent: October 1, 2024Assignee: xMEMS Labs, Inc.Inventors: Jemm Yue Liang, Jing-Meng Liu
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Publication number: 20240321255Abstract: 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: ApplicationFiled: March 18, 2024Publication date: September 26, 2024Applicant: xMEMS Labs, Inc.Inventors: Jemm Yue Liang, Hsi-Sheng Chen, Chieh-Yao Chang
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Patent number: 12088988Abstract: 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: GrantFiled: December 6, 2023Date of Patent: September 10, 2024Assignee: xMEMS Labs, Inc.Inventors: Wen-Chien Chen, Kai-Chieh Chang, Chiung C. Lo, Yuan-Shuang Liu
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Patent number: 12075213Abstract: 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: GrantFiled: May 22, 2023Date of Patent: August 27, 2024Assignee: xMEMS Labs, Inc.Inventors: Jemm Yue Liang, Jye Ren
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Publication number: 20240276139Abstract: 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: ApplicationFiled: June 15, 2023Publication date: August 15, 2024Applicant: xMEMS Labs, Inc.Inventors: Chao-Yu Chen, Wen-Chien Chen, Chiung C. Lo, Hai-Hung Wen
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Patent number: 12063470Abstract: 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: GrantFiled: June 15, 2023Date of Patent: August 13, 2024Assignee: xMEMS Labs, Inc.Inventors: Chao-Yu Chen, Wen-Chien Chen, Chiung C. Lo, Hai-Hung Wen
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Publication number: 20240262679Abstract: 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: ApplicationFiled: April 18, 2024Publication date: August 8, 2024Applicant: xMEMS Labs, Inc.Inventors: Chun-I Chang, Wen-Chien Chen, Chiung C. Lo, Kuan-Ju Tseng, Jemm Yue Liang, Martin George Lim
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Publication number: 20240251199Abstract: 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: ApplicationFiled: April 1, 2024Publication date: July 25, 2024Applicant: xMEMS Labs, Inc.Inventors: Jemm Yue Liang, JengYaw Jiang
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Patent number: 12028673Abstract: 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: GrantFiled: August 7, 2023Date of Patent: July 2, 2024Assignee: xMEMS Labs, Inc.Inventors: Chiung C. Lo, Shun-Nan Tai, Wen-Chien Chen, Jing-Meng Liu
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Patent number: 12022253Abstract: 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: GrantFiled: February 22, 2023Date of Patent: June 25, 2024Assignee: xMEMS Labs, Inc.Inventors: Chiung C. Lo, Martin George Lim, Jemm Yue Liang, Wen-Chien Chen
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Publication number: 20240199410Abstract: 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: ApplicationFiled: September 28, 2023Publication date: June 20, 2024Applicant: xMEMS Labs, Inc.Inventors: Jye Ren, Jemm Yue Liang, Wen-Chien Chen
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Publication number: 20240174508Abstract: 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: ApplicationFiled: February 6, 2024Publication date: May 30, 2024Applicant: xMEMS Labs, Inc.Inventors: Yanchen Lu, Jemm Yue Liang, Michael David Housholder, JengYaw Jiang
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Patent number: 11996866Abstract: 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: GrantFiled: March 6, 2023Date of Patent: May 28, 2024Assignee: xMEMS Labs, Inc.Inventors: Jemm Yue Liang, Hsi-Sheng Chen, Chieh-Yao Chang, Hung-Chi Huang, Jing-Meng Liu
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Patent number: 11991497Abstract: 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: GrantFiled: June 16, 2023Date of Patent: May 21, 2024Assignee: xMEMS Labs, Inc.Inventors: Chao-Yu Chen, Chiung C. Lo, Jemm Yue Liang, Wen-Chien Chen, Jye Ren
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Publication number: 20240147139Abstract: 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: ApplicationFiled: June 16, 2023Publication date: May 2, 2024Applicant: xMEMS Labs, Inc.Inventors: Chao-Yu Chen, Chiung C. Lo, Jemm Yue Liang, Wen-Chien Chen, Jye Ren
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Patent number: 11972749Abstract: 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: GrantFiled: April 20, 2023Date of Patent: April 30, 2024Assignee: xMEMS Labs, Inc.Inventors: James Wargnier, Michael David Housholder, Yanchen Lu, JengYaw Jiang
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Patent number: 11974104Abstract: 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: GrantFiled: January 13, 2022Date of Patent: April 30, 2024Assignee: xMEMS Labs, Inc.Inventors: Jemm Yue Liang, Yanchen Lu, Hao-Hsin Chang
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Publication number: 20240128928Abstract: 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: ApplicationFiled: December 26, 2023Publication date: April 18, 2024Applicant: xMEMS Labs, Inc.Inventors: Jemm Yue Liang, Jing-Meng Liu, Jye Ren
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Publication number: 20240121547Abstract: 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: ApplicationFiled: December 6, 2023Publication date: April 11, 2024Applicant: xMEMS Labs, Inc.Inventors: Wen-Chien Chen, Kai-Chieh Chang, Chiung C. Lo, Yuan-Shuang Liu