Patents by Inventor Joachim LECHNER

Joachim LECHNER 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: 11114025
    Abstract: A method is proposed for sensing light being incident on an electronic device. The electronic device comprises a display and a light sensor arrangement which is mounted behind the display such as to receive incident light through the display. The method comprises the step of repeatedly switching the display on and off depending on a modulation signal, wherein a sub-frame is defined by an on-state and a consecutive off-state of the display. The modulation signal depends on at least one modulation parameter. In a first sub-frame a display brightness is set to a first level depending on a first value of the at least one modulation parameter. Then a first frame count is determined by integrating the incident light by means of the light sensor arrangement during the first sub-frame. In a second sub-frame the display brightness is set to a second level depending on a second value of the at least one modulation parameter.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: September 7, 2021
    Assignee: AMS AG
    Inventors: Bernhard Greimel-Längauer, Joachim Lechner, Josef Kriebernegg
  • 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
  • Patent number: 10950187
    Abstract: A method is suggested for sensing light being incident on an electronic device. The electronic device comprises a display and a light sensor arrangement mounted behind the display such as to receive incident light through the display. The method comprises periodically switching the display on and off depending on a control signal, wherein a period is defined by a succession of an on-state and an off-state of the display. A sensor signal is generated by integrating the incident light by means of the light sensor arrangement for a total integration time comprising a number of periods. A first signal count is determined from the sensor signal being indicative of an amount of integrated incident light during an on-state. A second signal count is determined from the sensor signal being indicative of an amount of integrated incident light during an off-state. A third signal count is determined from the sensor signal being indicative of an amount of integrated incident light during the total integration time.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: March 16, 2021
    Assignee: AMS AG
    Inventors: Josef Kriebernegg, Bernhard Greimel-Rechling, Herbert Lenhard, Peter Bliem, Joachim Lechner, Christian Halper, Manuel Hoerbinger
  • Publication number: 20210056896
    Abstract: A method is proposed for sensing light being incident on an electronic device. The electronic device comprises a display and a light sensor arrangement which is mounted behind the display such as to receive incident light through the display. The method comprises the step of repeatedly switching the display on and off depending on a modulation signal, wherein a sub-frame is defined by an on-state and a consecutive off-state of the display. The modulation signal depends on at least one modulation parameter. In a first sub-frame a display brightness is set to a first level depending on a first value of the at least one modulation parameter. Then a first frame count is determined by integrating the incident light by means of the light sensor arrangement during the first sub-frame. In a second sub-frame the display brightness is set to a second level depending on a second value of the at least one modulation parameter.
    Type: Application
    Filed: January 31, 2019
    Publication date: February 25, 2021
    Inventors: Bernhard GREIMEL-LÄNGAUER, Joachim Lechner, Josef Kriebernegg
  • Publication number: 20190392772
    Abstract: A method is suggested for sensing light being incident on an electronic device. The electronic device comprises a display and a light sensor arrangement mounted behind the display such as to receive incident light through the display. The method comprises periodically switching the display on and off depending on a control signal, wherein a period is defined by a succession of an on-state and an off-state of the display. A sensor signal is generated by integrating the incident light by means of the light sensor arrangement for a total integration time comprising a number of periods. A first signal count is determined from the sensor signal being indicative of an amount of integrated incident light during an on-state. A second signal count is determined from the sensor signal being indicative of an amount of integrated incident light during an off-state. A third signal count is determined from the sensor signal being indicative of an amount of integrated incident light during the total integration time.
    Type: Application
    Filed: February 7, 2018
    Publication date: December 26, 2019
    Inventors: Josef Kriebernegg, Bernhard Greimel-Rechling, Herbert Lenhard, Peter Bliem, Joachim Lechner, Christian Halper, Manuel Hoerbinger
  • Publication number: 20190212194
    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: Application
    Filed: August 7, 2016
    Publication date: July 11, 2019
    Inventors: Bernhard Greimel-Rechling, Peter Bliem, Herbert Lenhard, Josef Kriebernegg, Joachim Lechner, Christian Halper
  • Patent number: 9510410
    Abstract: An electric driver circuit for driving a light-emitting diode may be operated in a regulation operation mode to generate an output voltage to drive a predefined current through the light-emitting diode. The electric driver circuit is operated in a start-up operation mode before the regulation operation mode. The operation of the electric driver circuit in the start-up operation mode enables that a coil current generated in an inductor can be completely discharged before starting the regulation operation mode.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: November 29, 2016
    Assignee: AMS AG
    Inventors: Mario Teufel, Joachim Lechner
  • Publication number: 20160174312
    Abstract: An electric driver circuit for driving a light-emitting diode may be operated in a regulation operation mode to generate an output voltage to drive a predefined current through the light-emitting diode. The electric driver circuit is operated in a start-up operation mode before the regulation operation mode. The operation of the electric driver circuit in the start-up operation mode enables that a coil current generated in an inductor can be completely discharged before starting the regulation operation mode.
    Type: Application
    Filed: June 18, 2014
    Publication date: June 16, 2016
    Inventors: Mario TEUFEL, Joachim LECHNER