Patents by Inventor Gregory B. Arndt

Gregory B. Arndt 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: 11054329
    Abstract: Aspects of the subject technology relate to electronic devices with pressure sensors. A pressure sensor in a portable electronic device may include an integrated heater or may be co-operated with an external heater for the pressure sensor. The heater may be operated to heat some or all of the pressure sensor for pressure sensor testing, calibration, or temperature-controlled pressure sensing operations.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: July 6, 2021
    Assignee: Apple Inc.
    Inventors: David MacNeil, Gregory B. Arndt, Roberto M. Ribeiro, William E. Mickelson, Richard Yeh
  • Patent number: 10948372
    Abstract: A pressure sensing module for an electronic device includes a substrate and a module housing coupled to the substrate. The module housing defines a first chamber and a second chamber. The second chamber is separate from the first chamber. The first chamber is configured to connect to an environment around an electronic device. The second chamber is configured to connect to an internal volume of the housing of the electronic device. A first pressure sensing element is electrically coupled to the substrate and disposed in the first chamber and is operative to detect an external pressure around the electronic device. A second pressure sensing element is electrically coupled to the substrate and disposed in the second chamber and is operative to detect an internal pressure within the electronic device housing.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: March 16, 2021
    Assignee: Apple Inc.
    Inventors: Gregory B. Arndt, Krishna Prasad Vummidi Murali
  • Publication number: 20210072176
    Abstract: An electronic device can include a housing defining an internal volume and a pressure sensor assembly disposed in the internal volume and in communication with an ambient environment. The pressure sensor assembly can include a structure at least partially enclosing a sensor volume, a pressure sensor affixed to a die disposed in the sensor volume, and an exposed moisture detection conductor positioned in the sensor volume.
    Type: Application
    Filed: April 21, 2020
    Publication date: March 11, 2021
    Inventors: Caleb C. Han, Brad G. Boozer, David MacNeil, Gregory B. Arndt, Patrick E. O'Brien, Roham Solasi, Tongbi T. Jiang, Ashwin Balasubramanian, William S. Lee, Manoj K. Bhattacharyya, Jiahui Liang, James G. Horiuchi, Savas Gider
  • Patent number: 10782131
    Abstract: A quadrature ADC feedback compensation system and method for MEMS gyroscope is disclosed. In an embodiment, a MEMS gyroscope comprises an analog processing chain including a drive circuit for generating an analog drive signal and a sense circuit that is configured to generate an analog rate signal and an analog quadrature signal in response to a change in capacitance output by the MEMS gyroscope. A compensation circuit coupled to the sense circuit is configured to null the analog quadrature signal using the analog drive signal and a compensation value, and to adaptively compensate, in a digital processing chain, a quadrature-induced rate offset of a digital rate signal over temperature using a digital quadrature signal, the compensation value and temperature data.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: September 22, 2020
    Assignee: Apple Inc.
    Inventors: Gregory B. Arndt, Christopher C. Painter
  • Patent number: 10768067
    Abstract: An apparatus with embedded water detection and heater includes a substrate including a number of conductive traces and a lid including multiple electrodes. Each electrode is coupled to at least one of the conductive traces through vias. A sensor is placed inside a cavity of the lid and is electrically coupled to one or more conductive traces of the substrate. A gel at least partially fills the lid and covers the sensor. The presence of water on the apparatus is detected by measuring a dielectric permittivity between at least two of the plurality of electrodes, and the electrodes can generate heat to eliminate the water.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: September 8, 2020
    Assignee: Apple Inc.
    Inventors: Gregory B. Arndt, Jiahui Liang, Ashwin Balasubramanian
  • Patent number: 10732661
    Abstract: Aspects of the subject technology relate to a circuit for reducing random-telegraph noise in bandgap circuits. The circuit includes a number of diodes coupled in parallel at their respective first nodes to a ground potential. A number of switches are coupled to respective second nodes of the diodes. The circuit further includes a first resistor and a resistor voltage divider. The first node of the first resistor is coupled to a first node of a current source, and the first node of the resistor voltage divider is coupled to the first node of the current source. The switches are used to implement cyclic switching of the diodes in response to a train of pulses. An output voltage of the circuit is derived between a mid-node of the resistor voltage divider and a second node of the first resistor.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: August 4, 2020
    Assignee: Apple Inc.
    Inventors: Gregory B. Arndt, Salvatore Reddiconto
  • Patent number: 10704910
    Abstract: An architecture is disclosed for an angular rate sensor that includes a duty-cycled phase shifter for generating a clock with high resolution delay for use in synchronized demodulation of a sensor output signal. In an embodiment, a sensor comprises: a mechanical resonator; a drive circuit coupled to the mechanical resonator and operable to actuate the mechanical resonator into resonant vibration; a sense circuit mechanically coupled to the mechanical resonator, the sense circuit operable to generate a sense signal having an in-phase signal component and a quadrature signal component; a demodulator circuit operable to receive the sense signal and a first clock for demodulating the sense signal to separate the in-phase signal component from the quadrature signal component; and a duty-cycled phase shifter coupled to the demodulator, the duty-cycled phase shifter operable to generate the first clock.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: July 7, 2020
    Assignee: Apple Inc.
    Inventors: Gregory B. Arndt, Christopher C. Painter
  • 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
  • Patent number: 10623867
    Abstract: A microelectromechanical system (MEMS) ambient pressure and acoustic sensor including an enclosure having an enclosure wall that defines an interior chamber and an acoustic input opening to the interior chamber, a moving structure positioned within the interior chamber and being acoustically coupled to the acoustic input opening. The moving structure having an acoustic sensing portion that is movable in response to an acoustic pressure input and an ambient pressure sensing portion that is movable in response to an ambient pressure input. The sensor further including a circuit electrically coupled to the moving structure and that is operable to determine an acoustic output and an ambient pressure output based on a movement of the moving structure.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: April 14, 2020
    Assignee: Apple Inc.
    Inventors: Neal D. Evans, Janhavi S. Agashe, Gregory B. Arndt
  • Publication number: 20200103302
    Abstract: A pressure sensing module for an electronic device includes a substrate and a module housing coupled to the substrate. The module housing defines a first chamber and a second chamber. The second chamber is separate from the first chamber. The first chamber is configured to connect to an environment around an electronic device. The second chamber is configured to connect to an internal volume of the housing of the electronic device. A first pressure sensing element is electrically coupled to the substrate and disposed in the first chamber and is operative to detect an external pressure around the electronic device. A second pressure sensing element is electrically coupled to the substrate and disposed in the second chamber and is operative to detect an internal pressure within the electronic device housing.
    Type: Application
    Filed: September 28, 2018
    Publication date: April 2, 2020
    Inventors: Gregory B. Arndt, Krishna Prasad Vummidi Murali
  • Publication number: 20200064215
    Abstract: An apparatus with embedded water detection and heater includes a substrate including a number of conductive traces and a lid including multiple electrodes. Each electrode is coupled to at least one of the conductive traces through vias. A sensor is placed inside a cavity of the lid and is electrically coupled to one or more conductive traces of the substrate. A gel at least partially fills the lid and covers the sensor. The presence of water on the apparatus is detected by measuring a dielectric permittivity between at least two of the plurality of electrodes, and the electrodes can generate heat to eliminate the water.
    Type: Application
    Filed: August 27, 2018
    Publication date: February 27, 2020
    Inventors: Gregory B. ARNDT, Jiahui LIANG, Ashwin BALASUBRAMANIAN
  • Publication number: 20190360882
    Abstract: A wireless communication device includes a pressure sensor to generate a first signal in response to a pressure variation. A variable offset capacitor is coupled in parallel with the pressure sensor. A first analog-to-digital converter (ADC) is coupled to the variable offset capacitor and to convert the first signal to a digital signal. The pressure sensor is a capacitive pressure sensor. The variable offset capacitor is a digitally controlled variable capacitor and the ADC is a low-resolution and low-power ADC.
    Type: Application
    Filed: May 22, 2018
    Publication date: November 28, 2019
    Inventor: Gregory B. ARNDT
  • Publication number: 20190265036
    Abstract: A quadrature ADC feedback compensation system and method for MEMS gyroscope is disclosed. In an embodiment, a MEMS gyroscope comprises an analog processing chain including a drive circuit for generating an analog drive signal and a sense circuit that is configured to generate an analog rate signal and an analog quadrature signal in response to a change in capacitance output by the MEMS gyroscope. A compensation circuit coupled to the sense circuit is configured to null the analog quadrature signal using the analog drive signal and a compensation value, and to adaptively compensate, in a digital processing chain, a quadrature-induced rate offset of a digital rate signal over temperature using a digital quadrature signal, the compensation value and temperature data.
    Type: Application
    Filed: February 28, 2018
    Publication date: August 29, 2019
    Applicant: Apple Inc.
    Inventors: Gregory B. Arndt, Christopher C. Painter
  • Publication number: 20190086284
    Abstract: Aspects of the subject technology relate to electronic devices with pressure sensors. A pressure sensor in a portable electronic device may include an integrated heater or may be co-operated with an external heater for the pressure sensor. The heater may be operated to heat some or all of the pressure sensor for pressure sensor testing, calibration, or temperature-controlled pressure sensing operations.
    Type: Application
    Filed: June 19, 2018
    Publication date: March 21, 2019
    Inventors: David MACNEIL, Gregory B. ARNDT, Roberto M. RIBEIRO, William E. MICKELSON, Richard YEH
  • Publication number: 20180317022
    Abstract: A microelectromechanical system (MEMS) ambient pressure and acoustic sensor including an enclosure having an enclosure wall that defines an interior chamber and an acoustic input opening to the interior chamber, a moving structure positioned within the interior chamber and being acoustically coupled to the acoustic input opening. The moving structure having an acoustic sensing portion that is movable in response to an acoustic pressure input and an ambient pressure sensing portion that is movable in response to an ambient pressure input. The sensor further including a circuit electrically coupled to the moving structure and that is operable to determine an acoustic output and an ambient pressure output based on a movement of the moving structure.
    Type: Application
    Filed: March 14, 2018
    Publication date: November 1, 2018
    Inventors: Neal D. Evans, Janhavi S. Agashe, Gregory B. Arndt
  • Publication number: 20180080769
    Abstract: An architecture is disclosed for an angular rate sensor that includes a duty-cycled phase shifter for generating a clock with high resolution delay for use in synchronized demodulation of a sensor output signal. In an embodiment, a sensor comprises: a mechanical resonator; a drive circuit coupled to the mechanical resonator and operable to actuate the mechanical resonator into resonant vibration; a sense circuit mechanically coupled to the mechanical resonator, the sense circuit operable to generate a sense signal having an in-phase signal component and a quadrature signal component; a demodulator circuit operable to receive the sense signal and a first clock for demodulating the sense signal to separate the in-phase signal component from the quadrature signal component; and a duty-cycled phase shifter coupled to the demodulator, the duty-cycled phase shifter operable to generate the first clock.
    Type: Application
    Filed: August 31, 2017
    Publication date: March 22, 2018
    Applicant: Apple Inc.
    Inventors: Gregory B. Arndt, Christopher C. Painter
  • Patent number: 9823072
    Abstract: In some implementations, a control system for a resonating element comprises: a resonating element being driven by an oscillating drive signal and configured to generate a sense signal proportional to an amplitude of motion; a phase comparator coupled to the resonating element and to an oscillating drive signal, the phase comparator configured to compare the sense signal and the oscillating drive signal and to generate an error signal proportional to the phase difference; an oscillator coupled to the phase comparator and configured for generating the oscillating drive signal, the oscillator configured to receive the error signal and to adjust a phase of the oscillating signal based on the error signal; and an automatic gain control coupled to the resonating element and the oscillator, the automatic gain control configured to adjust the gain of the oscillating drive signal based on the signal generated by the resonating element.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: November 21, 2017
    Assignee: Apple Inc.
    Inventors: Gregory B. Arndt, Christopher C. Painter
  • Publication number: 20170089701
    Abstract: In some implementations, a control system for a resonating element comprises: a resonating element being driven by an oscillating drive signal and configured to generate a sense signal proportional to an amplitude of motion; a phase comparator coupled to the resonating element and to an oscillating drive signal, the phase comparator configured to compare the sense signal and the oscillating drive signal and to generate an error signal proportional to the phase difference; an oscillator coupled to the phase comparator and configured for generating the oscillating drive signal, the oscillator configured to receive the error signal and to adjust a phase of the oscillating signal based on the error signal; and an automatic gain control coupled to the resonating element and the oscillator, the automatic gain control configured to adjust the gain of the oscillating drive signal based on the signal generated by the resonating element.
    Type: Application
    Filed: September 25, 2015
    Publication date: March 30, 2017
    Applicant: APPLE INC.
    Inventors: Gregory B. Arndt, Christopher C. Painter