Patents Assigned to AMS International AG
  • Patent number: 11100912
    Abstract: A noise cancellation headphone comprises a speaker, a front plate for carrying the speaker, a microphone arranged on or in the front plate, and a front vent opening arranged within the front plate and in close proximity to the microphone. The microphone is usable as a feedback microphone for active noise cancellation.
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: August 24, 2021
    Assignee: AMS INTERNATIONAL AG
    Inventor: Peter McCutcheon
  • Publication number: 20210255097
    Abstract: An integrated sensor module includes a UV radiation source operable to emit UV radiation onto a sample, and a sensor including spectrally sensitive UV channels disposed so as receive UV radiation from the sample. Each of the UV channels includes a respective sensing device and a respective UV interference filter disposed over a UV radiation sensitive portion of the respective sensing device. The respective UV interference filter for each particular one of the channels has transmission characteristics that are spectrally responsive to a spectral signature of a respective chemical substance.
    Type: Application
    Filed: June 14, 2019
    Publication date: August 19, 2021
    Applicant: ams International AG
    Inventors: Frederic ROGER, Troy CHESLER
  • Patent number: 11089419
    Abstract: The microphone comprises a housing (1, 2), which has an inner volume (12) filled with a gas, an opening (10) of the housing, an acoustic sensor (3) arranged in the housing, a diaphragm (13) of the acoustic sensor located above the opening, and a heater (14) in the inner volume. The acoustic sensor may especially comprise a microelectromechanical system. The gas is heated from inside the inner volume to increase the pressure and generate a corresponding signal of the acoustic sensor (3). This signal can be used for self-calibration of the sensitivity or for self-diagnostics to check the function of the microphone.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: August 10, 2021
    Assignee: AMS INTERNATIONAL AG
    Inventor: Mark Niederberger
  • Publication number: 20210215827
    Abstract: The current disclosure describes a stereo imaging system that is configured to use Time-of-Flight (“Tof”) techniques to aid in stereoscopic image processing. One process disclosed uses ToF to aid in identifying the same elements (e.g., pixel clusters) in stereo image pairs by narrowing down search areas for matching. Another process uses ToF to aid in identifying the same elements in stereo image pairs where there a small amount texture making it difficult to find a match.
    Type: Application
    Filed: May 14, 2019
    Publication date: July 15, 2021
    Applicant: ams International AG
    Inventors: Miguel Bruno VAELLO PAÑOS, David STOPPA, Markus ROSSI, Kang Seok JOO
  • Patent number: 11047733
    Abstract: A method for light-to-frequency conversion comprises generating a photocurrent by means of a photodiode and converting the photocurrent into a digital comparator output signal in a charge balancing operation depending on a first clock signal. From the digital comparator output signal an asynchronous count is determined and comprises an integer number of counts depending on the first clock signal. From the digital comparator output signal a fractional time count is determined and depends on a second clock signal. Finally, from the asynchronous count and from the fractional time count a digital output signal is calculated which is indicative of the photocurrent generated by the photodiode. The method may be carried out by an exemplary light-to-frequency converter equipped with a photodiode.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: June 29, 2021
    Assignee: AMS INTERNATIONAL AG
    Inventors: Rohit Ranganathan, Ravi Kumar Adusumalli
  • Patent number: 11031866
    Abstract: A charge pump circuit comprises a series circuit of a number N of stage circuits. A stage circuit comprises a converter circuit, a stage output, a stage input coupled via the converter circuit to the stage output, a first clock input and a second clock input coupled to the converter circuit, a control input and an activation transistor having a control terminal coupled to the control input and a first terminal coupled to the stage output.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: June 8, 2021
    Assignee: ams International AG
    Inventors: Mark Niederberger, Adrian Ryser, Luca Bettini
  • Patent number: 11022487
    Abstract: An optical sensor arrangement comprises a photodiode (11), an integrator (12) with an integrator input (15) coupled to the photodiode (11), a comparator (13) with a first input (18) coupled to an integrator output (16) of the integrator (12), and a reference capacitor circuit (14) that is coupled to the integrator input (15) and is designed to provide a charge package to the integrator input (15). In a start phase (A), charge packages are provided to the integrator input (15), until a comparator input voltage (VIN) at the first input (18) of the comparator (13) crosses a comparator switching point.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: June 1, 2021
    Assignee: AMS INTERNATIONAL AG
    Inventors: Bernhard Greimel-Rechling, Peter Bliem, Herbert Lenhard, Josef Kriebernegg, Joachim Lechner, Christian Halper
  • Publication number: 20210156976
    Abstract: A method of using an optical TOF module to determine distance to an object. The method includes acquiring signals in the TOF module indicative of distance to the object, using a first algorithm to provide an output indicative of the distance to the object based on the acquired signals, using at least one second different algorithm to provide an output indicative of the distance to the object based on the acquired signals, and combining the outputs of the first and at least one second algorithms to obtain an improved estimate of the distance to the object. In some implementations, each of the first and at least one second algorithms further provides an output representing a respective confidence level indicative of how accurately distance to the object has been extracted by the particular algorithm.
    Type: Application
    Filed: November 30, 2018
    Publication date: May 27, 2021
    Applicant: ams International AG
    Inventors: Stephan BEER, Ioannis TOLIOS, David STOPPA, Qiang ZHANG, Pablo TRUJILLO SERRANO, Ian Kenneth MILLS, Miguel Bruno VAELLO PAÑOS, Bryant HANSEN, Mitchell Sterling MARTIN, Doug NELSON
  • Patent number: 10985291
    Abstract: The photodiode device comprises a substrate (1) of semiconductor material with a main surface (10), a plurality of doped wells (3) of a first type of conductivity, which are spaced apart at the main surface (10), and a guard ring (7) comprising a doped region of a second type of conductivity, which is opposite to the first type of conductivity. The guard ring (7) surrounds an area of the main surface (10) including the plurality of doped wells (3) without dividing this area. Conductor tracks (4) are electrically connected with the doped wells (3), which are thus interconnected, and further conductor tracks (5) are electrically connected with a region of the second type of conductivity. A doped surface region (2) of the second type of conductivity is present at the main surface (10) and covers the entire area between the guard ring (7) and the doped wells (3).
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: April 20, 2021
    Assignee: AMS INTERNATIONAL AG
    Inventors: Gerald Meinhardt, Ewald Wachmann, Martin Sagmeister, Jens Hofrichter
  • Patent number: 10972059
    Abstract: A MEMS sensor (1) comprises a MEMS transducer (10) being coupled to a MEMS interface circuit (20). The MEMS interface circuit (20) comprises a bias voltage generator (100), a differential amplifier (200), a capacitor (300) and a feedback control circuit (400). The bias voltage generator (100) generates a bias voltage (Vbias) for operating the MEMS transducer. The variable capacitor (300) is connected to one of the input nodes (I200a) of the differential amplifier (200). At least one of the output nodes (A200a, A200b) of the differential amplifier is coupled to a base terminal (T110) of an output filter (110) of the bias voltage generator (100). Any disturbing signal from the bias voltage generator (100) is a common-mode signal that is divided equally on the input nodes (I200a, I200b) of the differential amplifier (200) and is therefore rejected.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: April 6, 2021
    Assignee: AMS INTERNATIONAL AG
    Inventors: Thomas Froehlich, Mark Niederberger, Colin Steele, Rene Scheuner, Thomas Christen, Lukas Perktold, Duy-Dong Pham
  • Patent number: 10972122
    Abstract: A sensor arrangement includes a sensor having a first terminal and a second terminal, and an amplifier having an amplifier input for applying an input signal and an amplifier output for providing an amplified input signal, the amplifier input being coupled to the second terminal. A quantizer having a quantizer input and a quantizer output is configured to provide a multi-level output signal on the basis of the amplified input signal and a feedback circuit having a feedback circuit input coupled to the quantizer output and a feedback circuit output coupled to the first terminal. The feedback circuit includes a digital-to-analog converter configured to generate an analog signal on the basis of the multi-level output signal, the analog signal being the basis of a feedback signal provided at the feedback circuit output, a feedback capacitor coupled between the feedback circuit output and an output of the digital-to-analog converter, and a voltage source coupled to the feedback circuit output.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: April 6, 2021
    Assignee: AMS INTERNATIONAL AG
    Inventors: Matthias Steiner, Thomas Froehlich
  • Publication number: 20210099079
    Abstract: A charge pump circuit comprises a series circuit of a number N of stage circuits. A stage circuit comprises a converter circuit, a stage output, a stage input coupled via the converter circuit to the stage output, a first clock input and a second clock input coupled to the converter circuit, a control input and an activation transistor having a control terminal coupled to the control input and a first terminal coupled to the stage output.
    Type: Application
    Filed: April 15, 2019
    Publication date: April 1, 2021
    Applicant: ams International AG
    Inventors: Mark Niederberger, Adrian Ryser, Luca Bettini
  • Patent number: 10951222
    Abstract: An input current (Iin) is transformed into an output integrated voltage (Vout_int) using a parallel connection of an operational transconductance amplifier and an integration capacitor. The output integrated voltage is reduced by repeatedly discharging the integration capacitor through a feedback loop via a digital-to-analog converter generating feedback pulses, a feedback clock period (Tclk_DAC) defining time intervals between successive rising edges of the feedback pulses. Sampling is performed during an extended feedback clock period (T*) after a lapse of a plurality of feedback clock periods (Tclk_DAC).
    Type: Grant
    Filed: July 4, 2018
    Date of Patent: March 16, 2021
    Assignee: ams International AG
    Inventor: Fridolin Michel
  • Patent number: 10938356
    Abstract: In an embodiment an integration circuit has a first input terminal configured to receive a first input signal, a second input terminal configured to receive a second input signal, an output terminal to provide an output signal as a function of the first and the second input signal, a first and a second amplifier, each being switchably connected between the first or the second input terminal and the output terminal, and a capacitor which is switchably coupled in a feedback loop either of the first or of the second amplifier such that the capacitor and one of the first and the second amplifier form an inverting integrator providing the output signal.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: March 2, 2021
    Assignee: AMS INTERNATIONAL AG
    Inventor: Fridolin Michel
  • Patent number: 10886249
    Abstract: A surface treatment solution includes a fluoride source; a first solvent; and a water transforming agent to transform water produced during wafer surface treatment into a second solvent, which can be the same as, or different from, the first solvent. The solution can be used, for example, in surface preparation for wafers having a backend including an electrical interconnect that includes aluminum or an aluminum alloy.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: January 5, 2021
    Assignee: ams International AG
    Inventor: Jens Hofrichter
  • Patent number: 10827138
    Abstract: A photodetector arrangement having adjustable output, comprises a photodetector having an array of pixels wherein each pixel. The pixels are arranged to convert electromagnetic radiation into an analog detection data signal, respectively. A readout circuit is coupled to the photodetector and comprises a receiving component and a combining component. The receiving component is arranged to read out detection data signals, to select at least one detection data signal depending on a control signal and to adjust gain and polarity of the selected detection data signal. The combining component is arranged to combine the detection data signals into one or more output signals to be provided at one or more output terminals. A control unit is coupled to the readout circuit via a control terminal and is arranged to provide the control signal at the readout circuit depending on a set of instructions.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: November 3, 2020
    Assignee: ams International AG
    Inventors: Todd Bishop, Glenn Lee, Dan Jacobs
  • Publication number: 20200295774
    Abstract: An input current (Iin) is transformed into an output integrated voltage (Vout_int) using a parallel connection of an operational transconductance amplifier and an integration capacitor. The output integrated voltage is reduced by repeatedly discharging the integration capacitor through a feedback loop via a digital-to-analog converter generating feedback pulses, a feedback clock period (Tclk_DAC) defining time intervals between successive rising edges of the feedback pulses. Sampling is performed during an extended feedback clock period (T*) after a lapse of a plurality of feedback clock periods (Tclk_DAC).
    Type: Application
    Filed: July 4, 2018
    Publication date: September 17, 2020
    Applicant: ams International AG
    Inventor: Fridolin MICHEL
  • Patent number: 10768044
    Abstract: An optical sensor device comprises a first and a second optical sensor arrangement. In the first optical sensor arrangement at least one optical sensor structure measures the incidence angle of incoming light that is approximately on the main beam axis of a light source. The second optical sensor arrangement comprises at least one optical sensor structure with at least one optical sensor, at least two metal layers and opaque walls optically isolating the optical sensor. An evaluation circuit provides an output signal of the second optical sensor arrangement under the condition that the incidence angle measured by the first optical sensor arrangement lies within a set interval.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: September 8, 2020
    Assignee: ams International AG
    Inventors: David Mehrl, Troy Chesler, Eugene G. Dierschke
  • Patent number: 10760963
    Abstract: A circuit arrangement comprises a photo detector (2) for detecting electromagnetic energy and a signal generating means (4, 6, 12, 16) being suitable for generating a sequence of events wherein an event interval of the sequence depends on the detected electromagnetic energy. The signal generating means (4, 6, 12, 16) is coupled downstream of the photo detector (2). A counting means (30, 32, 34, 36) for measuring a time period until a given number of events has been generated is coupled downstream of the signal generating means (4, 6, 12, 16).
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: September 1, 2020
    Assignee: ams International AG
    Inventor: Gregg Kodra
  • Patent number: 10735567
    Abstract: A mobile device comprising an environmental sensor and an electrically actuated membrane is described. The electrically actuated membrane may increase the airflow over the environmental sensor which may improve the response of the sensor to changes in the ambient environment around the mobile device.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: August 4, 2020
    Assignee: ams International AG
    Inventors: Kim Phan Le, Martin Valkenburg, Christophe Marc Macours, Zoran Zivkovic