1212 patents
Utility
Systems and Methods for Generating a Signal
11 Jan 24
A method for generating a signal for a device process may include retrieving a reduced-memory template signal centered on a chosen subharmonic of a reconstruction sample rate, upsampling the reduced-memory template signal to generate the signal for the device process at a desired data rate, and communicating the signal to a transducer for playback by the transducer.
Dana J. TAIPALE, Meena MATAI
Filed: 16 Jun 23
Utility
Current Sensing
11 Jan 24
This application relates to methods and apparatus for sensing current in a monitored current path, where the monitored current path is bidirectional such that current can flow in either direction along the monitored current path.
Kapil R. SHARMA, Kathryn R. HOLLAND, Matthew PETHERBRIDGE, Peter HSU, John B. BOWLERWELL
Filed: 6 Jul 23
Utility
Feed-forward Adaptive Noise-canceling with Dynamic Filter Selection Based on Classifying Acoustic Environment
11 Jan 24
An adaptive noise-canceling system generates an anti-noise signal from a noise reference signal with a feed-forward filter that filters the noise reference signal to produce the anti-noise signal.
Samuel P. Ebenezer, Rachid Kerkoud
Filed: 6 Jul 22
Utility
Determination of resonant frequency and quality factor for a sensor system
9 Jan 24
A method for determining sensor parameters of an actively-driven sensor system may include obtaining as few as three samples of a measured physical quantity versus frequency for the actively-driven sensor system, performing a refinement operation to provide a refined version of the sensor parameters based on the as few as three samples and based on a linear model of an asymmetry between slopes of the measured physical quantity versus frequency between pairs of the as few as three samples, iteratively repeating the refinement operation until the difference between successive refined versions of the sensor parameters is below a defined threshold, and outputting the refined sensor parameters as updated sensor parameters for the actively-driven sensor system.
Ryan Hellman
Filed: 12 Nov 20
Utility
Microphone system
9 Jan 24
A microphone system, comprises a first transducer, for generating a first acoustic signal, and a second transducer, for generating a second acoustic signal.
John P. Lesso, Thomas I. Harvey
Filed: 1 Mar 23
Utility
Sound components relationship classification and responsive signal processing in an acoustic signal processing system
2 Jan 24
An acoustic signal processing system and method includes classification technology to classify a relationship between at least two sound components of a received sound signal.
Nitin Kwatra, Jeffrey D. Alderson
Filed: 15 Apr 19
Utility
Acoustic Crosstalk Cancellation
28 Dec 23
Circuitry for acoustic crosstalk cancellation between first and second acoustic signals, the circuitry comprising: crosstalk cancellation circuitry configured to: receive a first audio signal and, based on the received first audio signal, generate a first crosstalk cancellation signal; receive a second audio signal and, based on the received second audio signal, generate a second crosstalk cancellation signal; combine the first crosstalk cancellation signal with a signal indicative of the second audio signal to generate a first crosstalk cancellation circuitry output signal; and combine the second crosstalk cancellation signal with a signal indicative of the first audio signal to generate a second crosstalk cancellation circuitry output signal; and output stage circuitry configured to: receive the first crosstalk cancellation circuitry output signal and, based on the received first crosstalk cancellation circuitry, generate a first drive signal for driving a first speaker to generate the first acoustic signal; and receive the second crosstalk cancellation circuitry output signal and, based on the received second crosstalk cancellation circuitry, generate a second drive signal for driving a second speaker to generate the second acoustic signal, wherein a parameter of the crosstalk cancellation circuitry is variable based on one or more of: a position of a user of a host device incorporating the circuitry with respect to the host device; a volume setting of the host device; a level of the first and/or second crosstalk cancellation signal; and an operational parameter of the output stage circuitry.
Dayong ZHOU, Brad ZWERNEMANN, Kaichow LAU, Dana J. TAIPALE, John L. MELANSON
Filed: 23 Jun 22
Utility
Electrochemical Cell Characterisation
21 Dec 23
Circuitry for determining an impedance of an electrochemical cell comprising at least one first electrode and a second electrode, the circuitry comprising: drive circuitry configured to apply a stimulus to the electrochemical cell; sense circuitry configured to measure a response of the electrochemical cell to the stimulus; and processing circuitry configured to: determine an estimated transfer function of the electrochemical cell based on the stimulus and the response; determine a score for the estimated transfer function; and adjust the stimulus or circuitry used to measure the response based on the score.
John P. LESSO, Yanto SURYONO, Toru IDO
Filed: 1 Jun 23
Utility
Electrochemical Cell Characterisation
21 Dec 23
Circuitry for a resistance of an electrochemical cell comprising at least one first electrode and a second electrode, the circuitry comprising: drive circuitry configured to apply a stimulus to the at least one first electrode of the electrochemical cell; sense circuitry configured to measure a response of the electrochemical cell to the stimulus, the response comprising a faradaic component and a non-faradaic component; and processing circuitry configured to: sample the response at a sample time, the sample time selected to maximise a ratio of the non-faradaic component to the faradaic component; and determine the resistance of the electrochemical cell based on the response at the sample time.
John P. LESSO
Filed: 9 Jun 23
Utility
Integrated Circuit with Multifunction Capability
21 Dec 23
In an example there is provided an integrated circuit configured to perform a plurality of functions, the integrated circuit comprising a memory, wherein each function of the integrated circuit is configured to transmit a request to a processor, and wherein the integrated circuit is configured such that the first function to detect that its request has been serviced by the processor is configured to download firmware and/or configuration data for itself and for at least one other function.
David HISKY, Daniel WEBER, Jonathan E. EKLUND, Adam BRICKMAN
Filed: 31 May 23
Utility
Driver Circuits
21 Dec 23
The application describes a switched driver (401) for outputting a drive signal at an output node (402) to drive a load such as a transducer.
Anthony S. DOY, Eric J. KING
Filed: 1 Sep 23
Utility
Circuitry for analyte measurement
19 Dec 23
Circuitry for measuring a characteristic of an electrochemical cell, the circuitry comprising: a comparator having a first comparator input, a second comparator input and a comparator output; a feedback path between the comparator output and the second comparator input configured to provide a feedback signal to the second comparator input; and a loop filter configured to apply filtering to the feedback path to generate the feedback signal, wherein the loop filter comprises the electrochemical cell.
John P. Lesso, Toru Ido
Filed: 1 Sep 21
Utility
Circuitry for estimating displacement of a piezoelectric transducer
19 Dec 23
Circuitry for estimating a displacement of a piezoelectric transducer in response to a drive signal applied to the piezoelectric transducer, the circuitry comprising: monitoring circuitry configured to be coupled to the piezoelectric transducer and to output a sense signal indicative of an electrical signal associated with the piezoelectric transducer as a result of the drive signal; wherein the circuitry is configured to generate a difference signal based on the drive signal and the sense signal; and wherein the circuitry further comprises processing circuitry configured to apply at least one transfer function to the difference signal to generate a signal indicative of the displacement of the piezoelectric transducer.
John P. Lesso, Robert A. Steven
Filed: 30 Mar 21
Utility
Methods and apparatus for system identification
19 Dec 23
A method of identifying a system, the method comprising: obtaining an indication of background noise present at the system; generating a probe signal based on the indication; applying the probe signal to the system; estimating a response of the system to the probe signal; and identifying the system based on the measured response and the probe signal, wherein the probe signal comprises a whitening component configured to whiten noise in the estimated response due to the background noise present at the system.
Samuel P. Ebenezer
Filed: 29 Mar 22
Utility
Reproducibility of haptic waveform
19 Dec 23
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.
Jeffrey D. Alderson, John L. Melanson, Anthony S. Doy, Eric Lindemann
Filed: 25 Apr 22
Utility
Amplifier circuitry
19 Dec 23
This application relates to circuitry for monitoring for instability of an amplifier.
Sameer Baveja, Hamed Sadati
Filed: 10 May 22
Utility
Systems and methods for context-dependent multicore interrupt facilitation
19 Dec 23
A multicore processor may include a plurality of cores including at least a first core and a second core, a shared peripheral comprising a plurality of interrupt register banks including at least a first interrupt register bank dedicated to the first core and a second interrupt register bank dedicated to the second core, and a plurality of communications bridges, including at least a first bridge interfaced between the first core and the shared peripheral and at least a second bridge interfaced between the second core and the shared peripheral.
Sachin Deo, Younes Djadi, Nariankadu D. Hemkumar, Junsong Li, Wai-Shun Shum, Franz Weller
Filed: 8 Nov 22
Utility
Detection of speech
12 Dec 23
A method of own voice detection is provided for a user of a device.
John Paul Lesso
Filed: 13 Sep 22
Utility
Pseudo-bypass mode for power converters
12 Dec 23
A system may include a boost converter configured to receive an input voltage and boost the input voltage to an output voltage and control circuitry configured to enforce a maximum current limit to limit a current drawn by the boost converter and in response to the output voltage decreasing below the input voltage, dynamically increase the current above the maximum current limit to cause the output voltage to be approximately equal to the input voltage.
Hasnain Akram, Graeme G. Mackay, Jason W. Lawrence
Filed: 14 Dec 21
Utility
Protection circuitry
12 Dec 23
The present invention relates to circuitry comprising: interpolation filter circuitry configured to receive a digital input signal and to output an interpolated digital signal; amplifier circuitry configured to generate an output signal based on the interpolated digital signal; and protection circuitry.
Pradeep Saminathan, Graeme S. Angus, John B. Bowlerwell
Filed: 14 Jun 21