Patents by Inventor Eric Lindemann

Eric Lindemann 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).

  • Publication number: 20220262215
    Abstract: A system may include an electromagnetic load capable of generating a haptic event and a haptic processor configured to receive at least one first parameter indicative of a desired perception of the haptic event to a user of a device comprising the electromagnetic load, receive at least one second parameter indicative of one or more characteristics of the device, and process the at least one first parameter and the at least one second parameter to generate a driving signal to the electromagnetic load in order to produce the desired perception to the user despite variances in the device that cause an actual perception of the haptic event to vary from the desired perception.
    Type: Application
    Filed: April 25, 2022
    Publication date: August 18, 2022
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Jeffrey D. ALDERSON, John L. MELANSON, Anthony S. DOY, Eric LINDEMANN
  • Publication number: 20220213924
    Abstract: A protective cap (1, 9, 12) for the partial covering of a pre-fitted or a fully fitted vehicle component (11). The protective cap (1, 9, 12) is made from a biogenic and/or renewable raw material.
    Type: Application
    Filed: January 4, 2022
    Publication date: July 7, 2022
    Inventors: Florian ABENDROTH, Michael LINDEMANN, Eric HOLMES
  • Patent number: 11380175
    Abstract: A system may include an electromagnetic load capable of generating a haptic event and a haptic processor configured to receive at least one first parameter indicative of a desired perception of the haptic event to a user of a device comprising the electromagnetic load, receive at least one second parameter indicative of one or more characteristics of the device, and process the at least one first parameter and the at least one second parameter to generate a driving signal to the electromagnetic load in order to produce the desired perception to the user despite variances in the device that cause an actual perception of the haptic event to vary from the desired perception.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: July 5, 2022
    Assignee: Cirrus Logic, Inc.
    Inventors: Jeffrey D. Alderson, John L. Melanson, Anthony S. Doy, Eric Lindemann
  • Publication number: 20220198227
    Abstract: A classification system for classifying sensor samples in a sensor system, the sensor system comprising N force sensors each configured to output a sensor signal, where N?1, each sensor sample comprising N sample values from the N sensor signals, respectively, the classification system comprising: a classifier configured, for each of a series of candidate sensor samples, to perform a classification operation based on the N sample values concerned and generate a classification result which labels the candidate sensor sample as indicative of a defined target event, thereby generating a series of classification results corresponding to the series of candidate sensor samples, respectively; a determiner configured to output at least one event determination based on the series of classification results; and a controller configured to control the classifier and/or the determiner based on one or more controller input signals.
    Type: Application
    Filed: March 25, 2021
    Publication date: June 23, 2022
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Josh SANZ-ROBINSON, Siddharth MARU, Rahul GAWDE, Jon D. HENDRIX, Eric LINDEMANN, Pablo PESO PARADA
  • Publication number: 20220196503
    Abstract: A baseline unit for use in a sensor system, the sensor system comprising N force sensors which output N sensor signals, respectively, where N?1, the baseline unit configured to: monitor a measure of a rate of change of a sensor test signal, the sensor test signal being one of said N sensor signals or a signal derived from one or more of said N sensor signals; and in dependence upon the measure of the rate of change, control a stored baseline setting to control how a baseline test signal is calculated from said N sensor signals using a baseline-calculation method, the baseline-calculation method configured by the currently-stored baseline setting.
    Type: Application
    Filed: December 21, 2020
    Publication date: June 23, 2022
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Eric LINDEMANN, Pablo PESO PARADA, Tanner ROSENTHAL, Siddharth MARU
  • Publication number: 20220196498
    Abstract: A classifier for classifying sensor samples in a sensor system, the sensor system comprising N force sensors each configured to output a sensor signal, where N>1, each sensor sample comprising N sample values from the N sensor signals, respectively, defining a sample vector in N-dimensional vector space, the classifier having access to a target definition corresponding to a target event, the target definition defining a bounded target region of X-dimensional vector space, where X?N, the classifier configured, for a candidate sensor sample, to perform a classification operation comprising: determining a candidate location in the X-dimensional vector space defined by a candidate vector corresponding to the candidate sensor sample, the candidate vector being the sample vector for the candidate sensor sample or a vector derived therefrom; and generating a classification result for the candidate sensor sample based on the candidate location, the classification result labelling the candidate sensor sample as ind
    Type: Application
    Filed: December 21, 2020
    Publication date: June 23, 2022
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Eric LINDEMANN, Josh SANZ-ROBINSON, Pablo PESO PARADA
  • Patent number: 11333622
    Abstract: A method for determining a direct current impedance of a transducer may include receiving an input signal indicative of an electrical power consumed by the transducer and calculating, by a thermal model of the transducer, the direct current impedance based on the electrical power.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: May 17, 2022
    Assignee: Cirrus Logic, Inc.
    Inventors: Emmanuel Marchais, Carl Lennart Ståhl, Eric Lindemann, Jason W. Lawrence, Dayong Zhou
  • Patent number: 11283337
    Abstract: A system may include a signal generator configured to generate a raw waveform signal and a modeling subsystem configured to implement a discrete time model of an electromagnetic load that emulates a virtual electromagnetic load and further configured to modify the raw waveform signal to generate a waveform signal for driving the electromagnetic load by modifying the virtual electromagnetic load to have a desired characteristic, applying the discrete time model to the raw waveform signal to generate the waveform signal for driving the electromagnetic load, and applying the waveform signal to the electromagnetic load.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: March 22, 2022
    Assignee: Cirrus Logic, Inc.
    Inventors: Eric Lindemann, Carl Lennart Ståhl, Emmanuel Marchais, John L. Melanson
  • Patent number: 11263877
    Abstract: A method for identifying a mechanical impedance of an electromagnetic load may include generating a waveform signal for driving an electromagnetic load, the waveform signal comprising a first tone at a first driving frequency and a second tone at a second driving frequency. The method may also include during driving of the electromagnetic load by the waveform signal or a signal derived therefrom, receiving a current signal representative of a current associated with the electromagnetic load and a back electromotive force signal representative of a back electromotive force associated with the electromagnetic load.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: March 1, 2022
    Assignee: Cirrus Logic, Inc.
    Inventors: Emmanuel Marchais, Eric Lindemann, Carl L. Ståhl
  • Patent number: 11259121
    Abstract: Embodiments described herein provide an audio device and a method of operating the audio device. The audio device comprises at least one surface, a first surface transducer positioned to excite first modes of oscillation in a first surface of the at least one surface, and a second surface transducer positioned to excite second modes of oscillation in a second surface of the at least one surface, wherein the first modes of oscillation are of a higher frequency than the second modes of oscillation.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: February 22, 2022
    Assignee: Cirrus Logic, Inc.
    Inventors: Eric Lindemann, Itisha Tyagi, John L. Melanson
  • Patent number: 11238709
    Abstract: A system includes a sequencer that divides a reference waveform into reference sequences, a sequence adjuster, and a model that models non-linearities of a haptic rendering signal chain that includes a haptic transducer load and a driver to the load. For each reference sequence: the sequence adjuster transforms the reference sequence into a test sequence using one or more parameters (e.g., changes reference sequence amplitude and/or period), the model generates an output in response to the test sequence, an error signal is generated that measures a difference between the output and the reference sequence, and if the error signal is above a threshold the parameters are adjusted based on the error signal. These operations are repeated until the error signal is below the threshold in which case the test sequence becomes a selected sequence, which is then sent to the haptic rendering signal chain.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: February 1, 2022
    Assignee: Cirrus Logic, Inc.
    Inventors: Emmanuel Marchais, Eric Lindemann, Carl L. Stahl
  • Patent number: 11228840
    Abstract: Embodiments described herein provide an audio device and a method of operating the audio device. The audio device comprises at least one surface, a first surface transducer positioned to excite first modes of oscillation in a first surface of the at least one surface, and a second surface transducer positioned to excite second modes of oscillation in a second surface of the at least one surface, wherein the first modes of oscillation are of a higher frequency than the second modes of oscillation.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: January 18, 2022
    Assignee: Cirrus Logic, Inc.
    Inventors: Eric Lindemann, Itisha Tyagi, John L. Melanson
  • Patent number: 11228284
    Abstract: A method for controlling one or more parameters of an amplifier system may include receiving an indication of a physical quantity associated with the amplifier system, determining one or more parameters of the amplifier system in response to the indication, and causing the amplifier system to operate in accordance with the one or more parameters.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: January 18, 2022
    Assignee: Cirrus Logic, Inc.
    Inventors: Eric Lindemann, Itisha Tyagi
  • Patent number: 11154905
    Abstract: A system may include a vibrating surface, a first mechanical transducer mechanically coupled to the vibrating surface, a second mechanical transducer mechanically coupled to the vibrating surface at a location different than that of the first mechanical transducer, a first signal path for driving the first mechanical transducer, wherein the first signal path comprises a first amplifier and a first filter having a first frequency response, a second signal path for driving the second mechanical transducer, wherein the second signal path comprises a second amplifier and a second filter having a second frequency response, and a control subsystem.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: October 26, 2021
    Assignee: Cirrus Logic, Inc.
    Inventor: Eric Lindemann
  • Patent number: 11109155
    Abstract: A bass enhancement may be applied to improve the perception of low-frequency sounds by a user of an electronic device. A distortion function may be applied to the audio signal that results in creation of higher frequency content related to the low-frequency sounds. This higher frequency content may be interpreted by a listener's ear in a similar manner as the low-frequency sounds. The distortion function may be a Sigmoid function. Bass enhancements may also include scaling of the audio signal prior to distortion, adaptation of the distortion, or gap band filtering prior to the distortion.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: August 31, 2021
    Assignee: Cirrus Logic, Inc.
    Inventor: Eric Lindemann
  • Publication number: 20210125469
    Abstract: A system may include an electromagnetic load capable of generating a haptic event and a haptic processor configured to receive at least one first parameter indicative of a desired perception of the haptic event to a user of a device comprising the electromagnetic load, receive at least one second parameter indicative of one or more characteristics of the device, and process the at least one first parameter and the at least one second parameter to generate a driving signal to the electromagnetic load in order to produce the desired perception to the user despite variances in the device that cause an actual perception of the haptic event to vary from the desired perception.
    Type: Application
    Filed: September 30, 2020
    Publication date: April 29, 2021
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Jeffrey D. ALDERSON, John L. MELANSON, Anthony S. DOY, Eric LINDEMANN
  • Publication number: 20210052980
    Abstract: The application describes techniques for adaptively setting a threshold that will be used to determine the gain applied to a haptics signal.
    Type: Application
    Filed: January 30, 2020
    Publication date: February 25, 2021
    Inventors: Eric LINDEMANN, Michael KUREK, Meenakshi MATAI
  • Publication number: 20200348249
    Abstract: A method for determining a direct current impedance of a transducer may include receiving an input signal indicative of an electrical power consumed by the transducer and calculating, by a thermal model of the transducer, the direct current impedance based on the electrical power.
    Type: Application
    Filed: April 7, 2020
    Publication date: November 5, 2020
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Emmanuel MARCHAIS, Carl Lennart STÅHL, Eric LINDEMANN, Jason W. LAWRENCE, Dayong ZHOU
  • Publication number: 20200342724
    Abstract: A system includes a sequencer that divides a reference waveform into reference sequences, a sequence adjuster, and a model that models non-linearities of a haptic rendering signal chain that includes a haptic transducer load and a driver to the load. For each reference sequence: the sequence adjuster transforms the reference sequence into a test sequence using one or more parameters (e.g., changes reference sequence amplitude and/or period), the model generates an output in response to the test sequence, an error signal is generated that measures a difference between the output and the reference sequence, and if the error signal is above a threshold the parameters are adjusted based on the error signal. These operations are repeated until the error signal is below the threshold in which case the test sequence becomes a selected sequence, which is then sent to the haptic rendering signal chain.
    Type: Application
    Filed: April 6, 2020
    Publication date: October 29, 2020
    Inventors: Emmanuel Marchais, Eric Lindemann, Carl L. Stahl
  • Publication number: 20200320834
    Abstract: A method for identifying a mechanical impedance of an electromagnetic load may include generating a waveform signal for driving an electromagnetic load, the waveform signal comprising a first tone at a first driving frequency and a second tone at a second driving frequency. The method may also include during driving of the electromagnetic load by the waveform signal or a signal derived therefrom, receiving a current signal representative of a current associated with the electromagnetic load and a back electromotive force signal representative of a back electromotive force associated with the electromagnetic load.
    Type: Application
    Filed: June 19, 2020
    Publication date: October 8, 2020
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Emmanuel MARCHAIS, Eric LINDEMANN, Carl L. STÅHL