Inventor

JOHN L. MELANSON

Inventor

US

Overview

2021–2026

Patent span

Electricity

Primary field (CPC H)

Patents· 94 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H03Fprimary

H03FAmplifiers15%

H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems10%

H03MCoding10%

H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers9%

G06FElectric digital data processing6%

H03KPulse technique6%

G01RMeasuring electric variables6%

B06BMethods or apparatus for generating or transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency, e.g. for performing mechanical work in general4%

H10NElectric solid-state devices not otherwise provided for4%

H02NElectric machines not otherwise provided for4%

PatentTitleYear

12,574,045Finite impulse response input digital-to-analog converter2026 12,531,526Non-linear function in an early-sampled hybrid multi-level converter amplifier system2026 12,506,411Online characterization of battery model parameters with augmented dynamic stimulus2025 12,490,038Apparatus and methods for detecting a microphone condition2025 12,470,230Systems and methods for precharging driver circuitry for an analog-to-digital converter2025 12,450,030Circuitry for performing a multiply-accumulate operation2025 12,445,098Switching amplifier circuitry2025 12,431,894Driver circuitry2025 12,425,178Multi-chip synchronization in sensor applications2025 12,362,645Power conversion by a phase-controlled cascade of an inductor-based power supply and a charge pump2025 12,341,504Pre-conditioning a node of a circuit2025 12,323,055Driver circuitry and operation2025 12,308,805Calibration of pulse width modulation amplifier system2025 12,292,309Sensitivity equalization in multi-sensor inductive sensing applications2025 12,257,601Driver circuitry and operation2025 12,261,611Clock signal transitioning for multi-mode audio processing systems2025 12,255,481Pulsed current battery management system2025 12,176,781Methods and systems for estimating transducer parameters2024 12,169,418Voltage regulators2024 12,163,986Compensating for current splitting errors in a measurement system2024 12,163,984Compensating current monitor for electronic systems having mode-sensitive selection of current-sensing inputs2024 12,166,457Splice-point determined zero-crossing management in audio amplifiers2024 12,160,166Driver circuitry and operation2024 12,149,899Acoustic crosstalk cancellation2024 12,132,494Compensation of environmental drift by tracking switched capacitor impedance versus resistor impedance2024 12,119,834Circuitry comprising a loop filter2024 12,113,551Calibration of anti-aliasing filter mismatch2024 12,100,978Configurable network for enabling efficient charging and loading of two battery cells2024 12,088,308Dynamic state management of a phase-lock loop (PLL)2024 12,085,525Gain and mismatch calibration for a phase detector used in an inductive sensor2024 12,047,086Finite impulse response input digital-to-analog converter2024 12,009,829Finite impulse response input digital-to-analog converter2024 11,990,896Driver circuitry and operation2024 11,980,913Driver circuitry and operation2024 11,933,822Methods and systems for in-system estimation of actuator parameters2024 11,936,373Pre-conditioning a node of a circuit2024 11,906,993Nonlinear feedforward correction in a multilevel output system2024 11,888,492Background offset calibration of a high-speed analog signal comparator2024 11,855,592Calibration of pulse width modulation amplifier system2023 11,847,906Reproducibility of haptic waveform2023 11,821,761Maximizing dynamic range in resonant sensing2023 11,811,370Common-mode compensation in a multi-level pulse-width modulation system2023 11,808,669Gain and mismatch calibration for a phase detector used in an inductive sensor2023 11,798,978On-chip inductor with audio headphone amplifier2023 11,791,816Driver circuitry and operation2023 11,791,779Analog circuit differential pair element mismatch detection using spectral separation2023 11,782,101Hall sensor-based data acquisition system2023 11,779,956Driver circuitry2023 11,777,516Sigma-delta modulator with residue converter for low-offset measurement system2023 11,777,495Driver circuitry and operation2023 11,777,517Gain error reduction in switched-capacitor delta-sigma data converters sharing a voltage reference with a disabled data converter2023 11,764,741Determination of gain of pulse width modulation amplifier system2023 11,722,107Zero-crossing management in Class-D audio amplifiers2023 11,695,337Current control for a boost converter with dual anti-wound inductor2023 11,684,950Driver circuitry and operation2023 11,687,107Voltage regulators2023 11,674,995System and method for semiconductor device random telegraph sequence noise testing2023 11,677,360Equalization in a multi-path audio amplifier for canceling variations due to multi-path output impedance differences2023 11,652,455Chop tone management for a current sensor or a voltage sensor2023 11,641,558Apparatus and methods for detecting a microphone condition2023 11,638,094Techniques for howling detection2023 11,631,390SDR-based adaptive noise cancellation (ANC) system2023 11,621,683Current sensing circuitry2023 11,616,434Multiphase inductive boost converter with multiple operational phases2023 11,594,958Driver circuitry2023 11,552,567Single-inductor multiple output (SIMO) switching power supply having offset common-mode voltage for operating a class-d audio amplifier2023 11,539,331Signal amplitude-selected signal predistortion in an amplifier2022 11,507,199Pseudo-differential phase measurement and quality factor compensation2022 11,489,606Device calibration for isochronous channel communication2022 11,489,534Digital-to-analog conversion architecture and method2022 11,476,759Current control for a boost converter with dual anti-wound inductor2022 11,469,661Multiphase inductive boost converter with multiple operational phases2022 11,437,935High efficiency transducer driver2022 11,438,697Low-latency audio output with variable group delay2022 11,431,310Tracking and correcting gain of open-loop driver in a multi-path processing system2022 11,396,031Driver circuitry2022 11,385,666Circuitry comprising a capacitor2022 11,380,175Reproducibility of haptic waveform2022 11,381,239Driver circuitry2022 11,368,151Driver circuitry and operation2022 11,296,598Driver circuitry2022 11,296,666High common mode rejection ratio (CMRR) current monitoring circuit using floating supplies2022 11,296,685PWM modulator having quantizer calibratable for multi-non-ideal gain-affecting characteristics2022 11,290,120Resistive sensor based data acquisition system using low distortion analog front-end and digital gain error correction2022 11,283,337Methods and systems for improving transducer dynamics2022 11,277,104Dynamic stability control in amplifier driving high Q load2022 11,277,129Driver circuitry and operation2022 11,271,583Current digital-to-analog converter with high-impedance output2022 11,255,892Phase compensation in a resonant phase detector2022 11,259,121Surface speaker2022 11,237,065High dynamic range temperature sensor2022 11,239,857Calibration of digital-to-analog converter with low pin count2022 11,159,888Transducer cooling by introduction of a cooling component in the transducer input signal2021 11,153,682Micro-speaker audio power reproduction system and method with reduced energy use and thermal protection using micro-speaker electro-acoustic response and human hearing thresholds2021

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2021–2026Patents assigned to CIRRUS LOGIC INT SEMICONDUCTOR LTD (94)· patent assignee history

2021–2026Patents assigned to CIRRUS LOGIC INC (93)· patent assignee history

2021–2026Based in US· patent location history

2024Patents assigned to DELL PRODUCTS LP (1)· patent assignee history

2025Based in GB· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CIRRUS LOGIC INT SEMICONDUCTOR LTD	94	2021–2026
CIRRUS LOGIC INC	93	2021–2026
DELL PRODUCTS LP	1	2024

Locations

Location	Patents	Span
US	93	2021–2026
GB	1	2025