Patents by Inventor Miaolei YAN

Miaolei YAN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11280714
    Abstract: An apparatus for particulate matter (PM) measurement includes a first light source to generate a first light beam and a second light source disposed at a first distance from the first light source to generate a second light beam in parallel to the first light beam to illuminate a PM. The apparatus further includes a first light detector to measure a first timing corresponding to a first self-mixing signal resulting from a reflection and/or back-scattering of the first light beam from a PM, and a second light detector to measure a second timing corresponding to a second self-mixing signal resulting from a reflection and/or back-scattering of the second light beam from the PM. A processor can determine a first velocity of the PM based on a spatial separation between centers of the first light beam and the second light beam and a temporal separation between the first timing and the second timing.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: March 22, 2022
    Assignee: Apple Inc.
    Inventors: Omid Momtahan, Mehmet Mutlu, Miaolei Yan, Richard Yeh
  • Patent number: 11280774
    Abstract: A portable communication device includes one or more miniature sensors to sense one or more environmental gases. A processor is coupled to the miniature sensors and is configured to enhance location detection by determining a sensor signal transition. The sensor signal transition is caused by subsequent exposures of at least one of the miniature sensors to environmental gases of a first air composition and a second air composition. The first air composition and the second air composition are respectively associated with a first location and a second location.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: March 22, 2022
    Assignee: Apple Inc.
    Inventors: Miaolei Yan, Roberto M. Ribeiro, Richard Yeh
  • Patent number: 11211515
    Abstract: A device includes a semiconductor chip, and a semiconductor chip package in which the semiconductor chip is packaged. The semiconductor chip has a first major surface opposite a second major surface, and a set of four edges extending between the first major surface and the second major surface. The semiconductor chip package includes at least first and second electrodes exposed to an exterior of the semiconductor chip package and positioned apart from the semiconductor chip. The at least first and second electrodes overlap only one edge of the semiconductor chip. The semiconductor chip package also includes a filler that is molded between the semiconductor chip and each of the at least first and second electrodes.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: December 28, 2021
    Assignee: Apple Inc.
    Inventors: Tongbi T. Jiang, Miaolei Yan
  • Publication number: 20210364273
    Abstract: A portable electronic device is operable in a particulate matter concentration mode where the portable electronic device uses a self-mixing interferometry sensor to emit a beam of coherent light from an optical resonant cavity, receive a reflection or backscatter of the beam into the optical resonant cavity, produce a self-mixing signal resulting from a reflection or backscatter of the beam of coherent light, and determine a particle velocity and/or particulate matter concentration using the self-mixing signal. The portable electronic device is also operable in an absolute distance mode where the portable electronic device determines whether or not an absolute distance determined using the self-mixing signal is outside or within a particulate sensing volume associated with the beam of coherent light. If not, the portable electronic device may determine a contamination and/or obstruction is present that may result in inaccurate particle velocity and/or particulate matter concentration determination.
    Type: Application
    Filed: August 3, 2021
    Publication date: November 25, 2021
    Inventors: Mehmet Mutlu, Miaolei Yan
  • Patent number: 11141498
    Abstract: A portable communication device includes an apparatus for environmental sensing. The apparatus includes a housing, one or more environmental sensors and an optical source. The housing includes one or more ports for allowing air flow between the surrounding environment and a cavity of the housing. The environmental sensors are coupled to the housing and can sense an environmental agent included in the air flow. The optical source can illuminate the cavity of the housing to decompose unwanted organic compounds inside the port.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: October 12, 2021
    Assignee: Apple Inc.
    Inventors: Miaolei Yan, Michael K. Brown, Richard Yeh
  • Patent number: 11112233
    Abstract: Aspects of the subject technology relate to an apparatus for self-mixing particulate-matter sensing using a vertical-cavity surface-emitting laser (VCSEL) with extrinsic photodiodes. The apparatus includes a dual-emitting light source disposed on a first chip and to generate a first light beam and a second light beam. The first light beam illuminates a particulate matter (PM), and a light detector extrinsic to the first chip measures the second light beam and variations of the second light beam and generates a self-mixing signal. The variations of the second light beam are caused by a back-scattered light resulting from back-scattering of the first light beam from the PM. The light detector is coupled to the dual-emitting light source. The direction of the second light beam is opposite to the direction of the first light beam, and the second light beam is directed to a sensitive area of the light detector.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: September 7, 2021
    Assignee: Apple Inc.
    Inventors: Mehmet Mutlu, Michael K. Brown, Wesley S. Smith, Orit A. Shamir, Richard T. Chen, Mark T. Winkler, Miaolei Yan, Richard Yeh
  • Patent number: 11112235
    Abstract: A portable electronic device is operable in a particulate matter concentration mode where the portable electronic device uses a self-mixing interferometry sensor to emit a beam of coherent light from an optical resonant cavity, receive a reflection or backscatter of the beam into the optical resonant cavity, produce a self-mixing signal resulting from a reflection or backscatter of the beam of coherent light, and determine a particle velocity and/or particulate matter concentration using the self-mixing signal. The portable electronic device is also operable in an absolute distance mode where the portable electronic device determines whether or not an absolute distance determined using the self-mixing signal is outside or within a particulate sensing volume associated with the beam of coherent light. If not, the portable electronic device may determine a contamination and/or obstruction is present that may result in inaccurate particle velocity and/or particulate matter concentration determination.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: September 7, 2021
    Assignee: Apple Inc.
    Inventors: Mehmet Mutlu, Miaolei Yan
  • Publication number: 20210080245
    Abstract: Aspects of the subject technology relate to an apparatus for self-mixing particulate-matter sensing using a vertical-cavity surface-emitting laser (VCSEL) with extrinsic photodiodes. The apparatus includes a dual-emitting light source disposed on a first chip and to generate a first light beam and a second light beam. The first light beam illuminates a particulate matter (PM), and a light detector extrinsic to the first chip measures the second light beam and variations of the second light beam and generates a self-mixing signal. The variations of the second light beam are caused by a back-scattered light resulting from back-scattering of the first light beam from the PM. The light detector is coupled to the dual-emitting light source. The direction of the second light beam is opposite to the direction of the first light beam, and the second light beam is directed to a sensitive area of the light detector.
    Type: Application
    Filed: September 12, 2019
    Publication date: March 18, 2021
    Inventors: Mehmet MUTLU, Michael K. BROWN, Wesley S. SMITH, Orit A. SHAMIR, Richard T. CHEN, Mark T. WINKLER, Miaolei YAN, Richard YEH
  • Patent number: 10928345
    Abstract: A portable communication device may include a gas sensor enclosed in an enclosure, a port to allow flow of air into and out of the enclosure, and a light source disposed on an internal surface of the enclosure. The light source is operable to facilitate generation of ozone gas within the enclosure. The enclosure may contain a heating element that allows baseline calibration of the gas sensor by thermally decomposing ozone gas molecules. The gas sensor includes a miniature gas sensor such as a metal-oxide (MOX) gas sensor.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: February 23, 2021
    Assignee: Apple Inc.
    Inventors: Michael K. Brown, Miaolei Yan, Roberto M. Ribeiro
  • Publication number: 20200318945
    Abstract: A portable electronic device is operable in a particulate matter concentration mode where the portable electronic device uses a self-mixing interferometry sensor to emit a beam of coherent light from an optical resonant cavity, receive a reflection or backscatter of the beam into the optical resonant cavity, produce a self-mixing signal resulting from a reflection or backscatter of the beam of coherent light, and determine a particle velocity and/or particulate matter concentration using the self-mixing signal. The portable electronic device is also operable in an absolute distance mode where the portable electronic device determines whether or not an absolute distance determined using the self-mixing signal is outside or within a particulate sensing volume associated with the beam of coherent light. If not, the portable electronic device may determine a contamination and/or obstruction is present that may result in inaccurate particle velocity and/or particulate matter concentration determination.
    Type: Application
    Filed: March 27, 2020
    Publication date: October 8, 2020
    Inventors: Mehmet Mutlu, Miaolei Yan
  • Publication number: 20200319082
    Abstract: Various sensors, including particulate matter sensors, are described. One particulate matter sensor includes a self-mixing interferometry sensor and a set of one or more optical elements. The set of one or more optical elements is positioned to receive an optical emission of the self-mixing interferometry sensor, split the optical emission into multiple beams, and direct each beam of the multiple beams in a different direction. The self-mixing interferometry sensor is configured to generate particle speed information for particles passing through respective measurement regions of the multiple beams.
    Type: Application
    Filed: March 27, 2020
    Publication date: October 8, 2020
    Inventors: Mehmet Mutlu, Miaolei Yan, Michael K. Brown, Richard Yeh
  • Publication number: 20200274020
    Abstract: A device includes a semiconductor chip, and a semiconductor chip package in which the semiconductor chip is packaged. The semiconductor chip has a first major surface opposite a second major surface, and a set of four edges extending between the first major surface and the second major surface. The semiconductor chip package includes at least first and second electrodes exposed to an exterior of the semiconductor chip package and positioned apart from the semiconductor chip. The at least first and second electrodes overlap only one edge of the semiconductor chip. The semiconductor chip package also includes a filler that is molded between the semiconductor chip and each of the at least first and second electrodes.
    Type: Application
    Filed: February 27, 2019
    Publication date: August 27, 2020
    Inventors: Tongbi T. Jiang, Miaolei Yan
  • Publication number: 20200237940
    Abstract: A portable communication device includes an apparatus for environmental sensing. The apparatus includes a housing, one or more environmental sensors and an optical source. The housing includes one or more ports for allowing air flow between the surrounding environment and a cavity of the housing. The environmental sensors are coupled to the housing and can sense an environmental agent included in the air flow. The optical source can illuminate the cavity of the housing to decompose unwanted organic compounds inside the port.
    Type: Application
    Filed: January 25, 2019
    Publication date: July 30, 2020
    Inventors: Miaolei YAN, Michael K. BROWN, Richard YEH
  • Publication number: 20200237947
    Abstract: A portable communication device includes an apparatus for environmental sensing. The apparatus includes a housing, one or more environmental sensors and an ozone source. The housing includes one or more ports for allowing air flow between the surrounding environment and a cavity of the housing. The environmental sensors are coupled to the housing and can sense an environmental agent included in the air flow. The ozone source can generate ozone gas within the cavity of the housing to decompose unwanted organic compounds inside the port.
    Type: Application
    Filed: January 25, 2019
    Publication date: July 30, 2020
    Inventors: Michael K. BROWN, Ashwin Balasubramanian, Miaolei Yan
  • Publication number: 20200209133
    Abstract: A portable communication device includes one or more optical detectors to generate an analog signal in response to a change in an intra-cavity or an emitted optical power of a light source due to light backscattered from a particle and an application-specific integrated circuit (ASIC). The particle is illuminated via a light source. The ASIC includes an analog-to-digital converter (ADC) circuit, a digital delay circuit, a particle detector module and a processor. The ADC converts the analog signal to a digital signal. The digital delay circuit can store the digital signal for a predetermined or dynamically variable time interval. The particle detector module can analyze the digital signal and can generate an enable signal upon detecting a particle signature in the digital signal. The processor is coupled to the digital delay circuit and can start processing the digital signal in response to the enable signal.
    Type: Application
    Filed: December 23, 2019
    Publication date: July 2, 2020
    Inventors: Miaolei YAN, Gregory B. Arndt, Mehmet Mutlu
  • Publication number: 20200064249
    Abstract: An apparatus for particulate matter (PM) measurement includes a first light source to generate a first light beam and a second light source disposed at a first distance from the first light source to generate a second light beam in parallel to the first light beam to illuminate a PM. The apparatus further includes a first light detector to measure a first timing corresponding to a first self-mixing signal resulting from a reflection and/or back-scattering of the first light beam from a PM, and a second light detector to measure a second timing corresponding to a second self-mixing signal resulting from a reflection and/or back-scattering of the second light beam from the PM. A processor can determine a first velocity of the PM based on a spatial separation between centers of the first light beam and the second light beam and a temporal separation between the first timing and the second timing.
    Type: Application
    Filed: August 21, 2019
    Publication date: February 27, 2020
    Inventors: Omid MOMTAHAN, Mehmet Mutlu, Miaolei Yan, Richard Yeh
  • Patent number: 10462544
    Abstract: A portable communication device includes a transducer enclosed in an enclosure. An opening allows flow of air between the transducer enclosed in the enclosure and a surrounding environment. The enclosure protects the transducer from misreading due to occlusion of environmental aggressors on the transducer. The enclosure is configured to repel the environmental aggressors away from a surface of the transducer and to keep a portion of the opening unclogged to maintain an air flow to the transducer.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: October 29, 2019
    Assignee: Apple Inc.
    Inventors: Miaolei Yan, David MacNeil, Michael K. Brown, Richard Yeh
  • Publication number: 20190265183
    Abstract: A portable communication device may include a gas sensor enclosed in an enclosure, a port to allow flow of air into and out of the enclosure, and a light source disposed on an internal surface of the enclosure. The light source is operable to facilitate generation of ozone gas within the enclosure. The enclosure may contain a heating element that allows baseline calibration of the gas sensor by thermally decomposing ozone gas molecules. The gas sensor includes a miniature gas sensor such as a metal-oxide (MOX) gas sensor.
    Type: Application
    Filed: February 14, 2019
    Publication date: August 29, 2019
    Inventors: Michael K. BROWN, Miaolei Yan, Roberto M. Ribeiro
  • Publication number: 20190257803
    Abstract: A portable communication device includes a first gas sensor, one or more second gas sensors, at least one port and a calibration module. The first gas sensor is disposed on a first hotplate and is enclosed in an enclosure. The one or more second gas sensors are disposed on one or more second hotplates and are also enclosed in the enclosure. The ports can allow flow of air into and out of the enclosure. The second gas sensors are stable gas sensors, which are used by the calibration module to calibrate the first gas sensor.
    Type: Application
    Filed: January 28, 2019
    Publication date: August 22, 2019
    Inventors: Michael K. BROWN, Roham SOLASI, Miaolei YAN
  • Publication number: 20190120806
    Abstract: A portable communication device includes one or more miniature sensors to sense one or more environmental gases. A processor is coupled to the miniature sensors and is configured to enhance location detection by determining a sensor signal transition. The sensor signal transition is caused by subsequent exposures of at least one of the miniature sensors to environmental gases of a first air composition and a second air composition. The first air composition and the second air composition are respectively associated with a first location and a second location.
    Type: Application
    Filed: August 28, 2018
    Publication date: April 25, 2019
    Inventors: Miaolei YAN, Roberto M. RIBEIRO, Richard YEH