Patents Assigned to xMEMS Labs, Inc.
  • Patent number: 10623882
    Abstract: A sounding system is provided. The sounding system comprising a sound producing device, disposed at a sound producing location, receiving a sounding sequence, configured to produce a sounding pulse array according to the sounding sequence; and a sounding circuit, comprising a sensor, disposed at a sound constructing location, receiving a received sounding pulse array corresponding to the sounding pulse array; a filtering circuit, configured to perform a filtering operation on the received sounding pulse array according to the sounding sequence and the sounding pulse waveform, and generate an overall filtering result; and a spike detection circuit, configured to perform a spike detection operation on the overall filtering result and obtain a channel impulse response corresponding to a channel between the sound producing location and the sound constructing location.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: April 14, 2020
    Assignee: xMEMS Labs, Inc.
    Inventor: Jemm Yue Liang
  • Patent number: 10609474
    Abstract: An air pulse generating element is disclosed. The air pulse generating element includes a front faceplate; a back faceplate; a front supporting element; a back supporting element; a folded membrane, configured to form a front chamber and a back chamber, and comprising a plurality of membrane units; wherein the plurality of membrane units are parallel and sequentially connected and an end of the folded membrane is connected to the back faceplate via the back supporting element and another end of the folded membrane is connected to the front faceplate via the front supporting element; and a plurality of valves controlling a plurality of air flow channels between the front chamber toward either a front space or a back space; wherein the plurality of membrane units are configured to perform horizontal deformation to squeeze air in and out of the front or back chamber with operations of the plurality of valves.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: March 31, 2020
    Assignee: xMEMS Labs, Inc.
    Inventors: Jemm Yue Liang, Chiung C. Lo, Wen-Chien Chen, Chun-I Chang
  • Patent number: 10567866
    Abstract: A sound producing device includes an air pulse generating element and a control unit. The air pulse generating element includes an air chamber, a membrane, a first air entrance and a first valve. The membrane is disposed in the air chamber. The first air entrance is disposed at a side of the membrane in a first direction. The first valve is disposed between the first air entrance and the membrane. The control unit generates a driving signal to control a movement of the membrane, such that the air pulse generating element generates an air pulse in response to the driving signal. During an operation, an first airflow corresponding to the air pulse flows into or flows out of the air chamber through the first air entrance, and passes through the first air entrance substantially along a direction parallel to the first direction perpendicular to the moving direction of the membrane.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: February 18, 2020
    Assignee: xMEMS Labs, Inc.
    Inventors: Jemm Yue Liang, David Hong
  • Patent number: 10547952
    Abstract: A sound producing apparatus is provided. The sound producing apparatus comprises a driving circuit, comprising a pulse amplitude modulation (PAM) module, configured to generate an driving signal according to an audio input signal, wherein the driving signal comprises a pulse amplitude modulated signal generated according to the audio input signal, the pulse amplitude modulated signal comprises a plurality of pulses at a pulse rate, two consecutive pulses among the plurality of pulses are temporally spaced by a pulse cycle, the pulse rate is a reciprocal of the pulse cycle, and the pulse rate is larger than a maximum audible frequency; and a sound producing device, coupled to the driving circuit, configured to produce sound according to the driving signal.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: January 28, 2020
    Assignee: xMEMS Labs, Inc.
    Inventor: Jemm Yue Liang
  • Patent number: 10536770
    Abstract: A sound producing apparatus is provided. The sound producing apparatus comprises a driving circuit, comprising a pulse amplitude modulation (PAM) module, configured to generate an driving signal according to an audio input signal, wherein the driving signal comprises a pulse amplitude modulated signal generated according to the audio input signal, the pulse amplitude modulated signal comprises a plurality of pulses at a pulse rate, two consecutive pulses among the plurality of pulses are temporally spaced by a pulse cycle, the pulse rate is a reciprocal of the pulse cycle, and the pulse rate is larger than a maximum audible frequency; and a sound producing device, coupled to the driving circuit, configured to produce sound according to the driving signal.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: January 14, 2020
    Assignee: xMEMS Labs, Inc.
    Inventor: Jemm Yue Liang
  • Patent number: 10484784
    Abstract: A sound producing apparatus is provided. The sound producing apparatus comprises a driving circuit, comprising a pulse amplitude modulation (PAM) module, configured to generate an driving signal according to an audio input signal, wherein the driving signal comprises a pulse amplitude modulated signal generated according to the audio input signal, the pulse amplitude modulated signal comprises a plurality of pulses at a pulse rate, two consecutive pulses among the plurality of pulses are temporally spaced by a pulse cycle, the pulse rate is a reciprocal of the pulse cycle, and the pulse rate is larger than a maximum audible frequency; and a sound producing device, coupled to the driving circuit, configured to produce sound according to the driving signal.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: November 19, 2019
    Assignee: xMEMS Labs, Inc.
    Inventor: Jemm Yue Liang
  • Patent number: 10477300
    Abstract: An air pulse generating element, disposed in a sound producing device, includes a membrane, disposed within a chamber; and a plurality of valves, disposed by the membrane within the chamber, configured to seal a plurality of openings of the chamber in response to a plurality of valve control signals; wherein the membrane and the plurality of valves are all fabricated at a first layer.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: November 12, 2019
    Assignee: xMEMS Labs, Inc.
    Inventors: David Hong, Chiung C. Lo, Jemm Yue Liang
  • Patent number: 10425732
    Abstract: The present invention provides a sound producing device comprising: an air pulse generating element and a control unit. The air pulse generating element comprises an air chamber and an actuator. The control unit, configured to generate a driving voltage applied to the actuator of the air pulse generating element, such that the air pulse generating element generates a plurality of air pulses in response to the driving voltage. The plurality of air pulses are at a pulse rate, and the pulse rate of the plurality of air pulses is higher than a maximum audible frequency.
    Type: Grant
    Filed: September 9, 2018
    Date of Patent: September 24, 2019
    Assignee: xMEMS Labs, Inc.
    Inventors: Jemm Yue Liang, Chiung C. Lo
  • Patent number: 10327060
    Abstract: An air pulse generating element, disposed in a sound producing device, includes a membrane, disposed within a chamber; and a plurality of valves, disposed by the membrane within the chamber, configured to seal a plurality of openings of the chamber in response to a plurality of valve control signals; wherein the membrane and the plurality of valves are all fabricated at a first layer.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: June 18, 2019
    Assignee: xMEMS Labs, Inc.
    Inventors: Chiung C. Lo, David Hong, Jemm Yue Liang