Inventor

MELANSON JOHN LAURENCE

US98 patents

⚠️ This page may combine multiple inventors who share the name “MELANSON JOHN LAURENCE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MELANSON JOHN LAURENCE

CIRRUS LOGIC INC

Power factor correction (PFC) controller and method using a finite state machine to adjust the duty cycle of a PWM control signal

Discontinuous conduction mode (DCM) using sensed current for a switch-mode converter

Data converters with digitally filtered pulse width modulation output stages and methods and systems using the same

Real time correction of a digital PWM amplifier

Noise shapers with shared and independent filters and multiple quantizers and data converters and methods using the same

Circuits and methods for compensating switched mode amplifiers

Delta-sigma amplifiers with output stage supply voltage variation compensation and methods and digital amplifier systems using the same

Circuits and methods for slew rate control and current limiting in switch-mode systems

Methods and apparatus for correction of higher order delta sigma converters

Power output stage compensation for digital output amplifiers

Digital to analog converter using level and timing control signals to cancel noise

Digital to analog conversion circuits and methods utilizing single-bit delta-SIGMA modulators and multiple-bit digital to analog converters

Digital data processing circuits and systems with delta-sigma modulator filtering

Direct synthesis clock generation circuits and methods

Circuits and methods for reducing interference from switched mode circuits

Data converters with digitally filtered pulse width modulation output stages and methods and systems using the same

Delta-sigma modulation circuits and methods utilizing multiple noise attenuation bands and data converters using the same

Noise shaping circuits and methods with feedback steering overload compensation and systems using the same

Cascaded noise shaping circuits with low out-of-band noise and methods and systems using the same

Calibration and compensation of delta sigma ADC&#39;s and DAC&#39;s by correlating noise signals

Second and higher order dynamic element matching in multibit digital to analog and analog to digital data converters

Circuits and methods for controlling switching noise in switched-mode circuits

Sample and hold circuits and methods with offset error correction and systems using the same

Feedback steering delta-sigma modulators and systems using the same

Delta-sigma modulators with improved noise performance

Circuits, Systems, and methods for volume in low noise 1-bit digital audio systems

Variable order modulator

Transient noise reduction circuits, systems and methods in power digital-to-analog converters

Delta-sigma modulators with integral digital low-pass filtering

Methods for output edge-balancing in pulse width modulation systems and data converters using the same

Data converters with ternary pulse width modulation output stages and methods and systems using the same

Delta-sigma amplifiers with output stage supply voltage variation compensations and methods and digital amplifier systems using the same

Delta-sigma modulators with double sampling input networks and systems using the same

GN RESOUND AS

Feedback cancellation apparatus and methods utilizing adaptive reference filter mechanisms

Apparatus and methods for combining audio compression and feedback cancellation in a hearing aid

Feedback cancellation improvements

Integrated hearing aid performance measurement and initialization system

Output regulator for feedback reduction in hearing aids

Hearing aid output clipping apparatus

AUDIOLOGIC INC

Adaptive dead time control for switching circuits

Correction of nonlinear output distortion in a Delta Sigma DAC

Delta sigma pwm dac to reduce switching

Noise reduction system for binaural hearing aid

Spectral transposition of a digital audio signal

MELANSON JOHN LAURENCE

LED lighting system with accurate current control

Switch-mode converter operating in a hybrid discontinuous conduction mode (DCM)/continuous conduction mode (CCM) that uses double or more pulses in a switching period

Adjustable constant current source with continuous conduction mode (“CCM”) and discontinuous conduction mode (“DCM”) operation

AUDIO LOGIC INC

Power supply compensation for noise shaped, digital amplifiers

Multilevel analog to digital data converter having dynamic element matching in a reference data path

AUDIOLOGIC HEARING SYS LP

Wide dynamic range delta sigma A/D converter

Calibration and compensation of delta sigma ADC's and DAC's by correlating noise signals