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Cirrus Logic Inc patents

Recent patent applications related to Cirrus Logic Inc. Cirrus Logic Inc is listed as an Agent/Assignee. Note: Cirrus Logic Inc may have other listings under different names/spellings. We're not affiliated with Cirrus Logic Inc, we're just tracking patents.

ARCHIVE: New 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "C" | Cirrus Logic Inc-related inventors




Date Cirrus Logic Inc patents (updated weekly) - BOOKMARK this page
10/05/17Systems and methods for using a speaker as a microphone
08/31/17Apparatus and measuring relative frequency response of audio device microphones
08/03/17Adjustable time duration for driving pulse-width modulation (pwm) output to reduce thermal noise
07/06/17Systems and methods for compressing a digital signal
07/06/17Systems and methods for compressing a digital signal
06/22/17Power stage with switched mode amplifier and linear amplifier
03/16/17Wireless earpiece with local audio cache
03/02/17Boost converter voltage controlled based on audio signal
02/16/17Systems and methods for dynamic range enhancement using an open-loop modulator in parallel with a closed-loop modulator
11/03/16Systems and methods for peak junction temperature sensing and thermal safe operating area protection
10/27/16Low-latency multi-driver adaptive noise canceling (anc) system for a personal audio device
10/20/16Speaker impedance monitoring
09/29/16Multichip dynamic range enhancement (dre) audio processing methods and apparatuses
09/01/16Switch-mode drive sensing of reverse recovery in bipolar junction transistor (bjt)-based power converters
09/01/16Detection and control mechanism for tail current in a bipolar junction transistor (bjt)-based power stage
08/18/16Resistance measurement of a resistor in a bipolar junction transistor (bjt)-based power stage
08/11/16Adaptive noise canceling architecture for a personal audio device
07/07/16Downlink tone detection and adaptation of a secondary path response model in an adaptive noise canceling system
06/23/16Systems and methods for performance and stability control for feedback adaptive noise cancellation
06/16/16Switchable secondary playback path
06/09/16Systems and methods for detection of load impedance of a transducer device coupled to an audio device
05/26/16Fully depleted region for reduced parasitic capacitance between a poly-silicon layer and a substrate region
05/05/16Power stage with switched mode amplifier and linear amplifier
04/28/16Systems and methods for dynamic range enhancement using an open-loop modulator in parallel with a closed-loop modulator
04/28/16Amplifier with adjustable ramp up/down gain for minimizing or eliminating pop noise
04/14/16Ripple reduction in light emitting diode (led)-based light bulb through increased ripple on an energy storage capacitor
03/17/16Systems and methods for reduction of audio artifacts in an audio system with dynamic range enhancement
03/17/16Systems and methods for reduction of audio artifacts in an audio system with dynamic range enhancement
03/10/16Systems and methods for gain calibration of an audio signal path
03/10/16Delta-sigma modulator with reduced integrator requirements
03/03/16Oversight control of an adaptive noise canceler in a personal audio device
02/25/16Energy-efficient personal audio device output stage with signal polarity-dependent power supply update rate
02/25/16Switching power converter input voltage approximate zero crossing determination
02/25/16Wireless earpiece with local audio cache
02/25/16Systems and methods for using a speaker as a microphone
02/18/16Systems and methods for nonlinear echo cancellation
01/21/16Systems and methods for maintaining dimmer behavior in a low-power lamp assembly
01/14/16Systems and methods for protecting a speaker
01/14/16Systems and methods for protecting a speaker
01/07/16Systems and methods of element scrambling for compensation and calibration of analog-to-digital converter feedback
12/31/15Systems and methods for compressing a digital signal
12/31/15Reducing audio artifacts in a system for enhancing dynamic range of audio signal path
12/24/15Systems and methods for clock synchronization in a data acquisition system
12/17/15Boost converter stage switch controller
12/17/15Systems and methods for selectively enabling and disabling adaptation of an adaptive noise cancellation system
12/10/15Noise cancellation microphones with shared back volume
12/10/15Headphone responsive to optical signaling
12/03/15Adaptive current control timing and responsive current control for interfacing with a dimmer
11/26/15Systems and methods for placement of singulated semiconductor devices for multi-site testing
11/26/15Switching parameter based discontinuous mode-critical conduction mode transition
11/26/15Utilizing secondary-side conduction time parameters of a switching power converter to provide energy to a load
11/19/15Systems and methods for reducing digital interference of external signals
11/12/15Switched mode converter with low-voltage linear mode
11/12/15System with multiple signal loops and switched mode converter
11/12/15Switched mode converter with low-voltage turn-around mode
11/12/15Switched mode amplifier with single-ended buck mode
11/05/15Schmitt trigger with threshold voltage close to rail voltage
11/05/15Proportional feedback for reduced overshoot and understoot in a switched output
10/29/15Led lighting system with accurate current control
10/22/15Systems and methods for determining acceleration based on phase demodulation of an electrical signal
10/22/15Systems and methods for carrying singulated device packages
10/22/15Systems and methods for fabricating a polycrystaline semiconductor resistor on a semiconductor substrate
10/22/15Systems and methods for valley switching in a switching power converter
10/22/15Comparator tracking control scheme with dynamic window length
10/22/15Systems and methods for minimizing power dissipation in a low-power lamp coupled to a trailing-edge dimmer
Patent Packs
10/15/15Switchable secondary playback path
10/15/15Frequency-shaped noise-based adaptation of secondary path adaptive response in noise-canceling personal audio devices
09/24/15Source audio acoustic leakage detection and management in an adaptive noise canceling system
09/24/15Led (light-emitting diode) string derived controller power supply
09/17/15Controlled power dissipation in a switch path in a lighting system
09/10/15Dimmer output emulation with non-zero glue voltage
09/10/15Frequency-dependent sidetone calibration
09/10/15Systems and methods for enhancing performance of audio transducer based on detection of transducer status
09/10/15Digitally-controlled switch-mode start-up circuit for led-based lights
09/10/15Digitally-controlled switch-mode start-up circuit with dimmer compatibility for led-based lights
08/06/15Differential output mode for a multi-mode power converter
08/06/15Systems and methods for controlling common mode voltage of multi-mode power converter
08/06/15Switched mode amplifier
07/30/15Low-cost low-power lighting system and lamp assembly
07/23/15Lighting system with lighting dimmer output mapping
Patent Packs
07/23/15Systems and methods for using a speaker as a microphone in a mobile device
07/02/15Coordinated gain control in adaptive noise cancellation (anc) for earspeakers
06/25/15Transistor devices operating with switching voltages higher than a nominal voltage of the transistor
06/18/15Switching power converter input voltage approximate zero crossing determination
06/18/15Low power analog-to-digital converter for sensing geophone signals
06/18/15Lighting system with power factor correction control data determined from a phase modulated signal
06/11/15Systems and methods for providing adaptive playback equalization in an audio device
06/11/15Systems and methods for sharing secondary path information between audio channels in an adaptive noise cancellation system
06/11/15Coordinated dimmer compatibility functions
06/11/15Systems and methods for bandlimiting anti-noise in personal audio devices having adaptive noise cancellation
05/28/15Boost and linear led control
05/28/15Variable resistance device for reduced power dissipation in dimmer compatibility circuits
04/16/15Mic covering detection in personal audio devices
04/02/15Ear-coupling detection and adjustment of adaptive response in noise-canceling in personal audio devices
03/26/15Duty factor probing of a triac-based dimmer
03/26/15Systems and methods for protecting a speaker from overexcursion
03/19/15Systems and methods for detection of load impedance of a transducer device coupled to an audio device
03/19/15Systems and methods for detection of load impedance of a transducer device coupled to an audio device
03/19/15Systems and methods for detection of load impedance of a transducer device coupled to an audio device
03/19/15Systems and methods for adaptive noise cancellation by adaptively shaping internal white noise to train a secondary path
03/05/15Systems and methods for low-power lamp compatibility with a trailing-edge dimmer and an electronic transformer
02/26/15Multi-mode dimmer interfacing including attach state control
01/29/15Two terminal drive of bipolar junction transistor (bjt) for switch-mode operation of a light emitting diode (led)-based bulb
01/29/15Compensating for a reverse recovery time period of a bipolar junction transistor (bjt) in switch-mode operation of a light-emitting diode (led)-based bulb
01/29/15Boost converter voltage controlled based on audio signal
01/29/15Boost converter controller with inductance value determination
01/01/15Systems and methods for using a speaker as a microphone in a mobile device
12/18/14Systems and methods for detection and cancellation of narrow-band noise
11/20/14Single pin control of bipolar junction transistor (bjt)-based power stage
11/20/14Charge pump-based drive circuitry for bipolar junction transistor (bjt)-based power supply
Social Network Patent Pack
11/20/14Reducing kickback current to power supply during charge pump mode transitions
11/13/14Stabilization circuit for low-voltage lighting
10/23/14Self-oscillating resonant converter-based light emitting diode (led) driver
10/23/14Circuit and detecting missed commutation of a brushless dc motor
10/16/14Systems and methods for hybrid adaptive noise cancellation
10/16/14Systems and methods for multi-mode adaptive noise cancellation for audio headsets
10/16/14Systems and methods for adaptive noise cancellation including secondary path estimate monitoring
10/16/14Systems and methods for adaptive noise cancellation including dynamic bias of coefficients of an adaptive noise cancellation system
10/09/14Systems and methods for generating a digital output signal in a digital microphone system
10/09/14Systems and methods for compressing a digital signal in a digital microphone system
Patent Packs
10/02/14Asymmetrically-switched modulation scheme
09/18/14High-efficiency lighting devices having dimmer and/or load condition measurement
09/18/14Controlled electronic system power dissipation via an auxiliary-power dissipation circuit
09/18/14System and learning dimmer characteristics
09/18/14Motor control loop with fast response
09/18/14Systems and methods for reducing voltage ringing in a power converter
09/18/14Systems and methods for edge control in a switched output stage
09/18/14Systems and methods for edge control based on detecting current direction in a switched output stage
09/18/14Monitoring of speaker impedance to detect pressure applied between mobile device and ear
09/18/14Low-latency multi-driver adaptive noise canceling (anc) system for a personal audio device
09/18/14Adaptive-noise canceling (anc) effectiveness estimation and correction in a personal audio device
09/18/14Ambient noise-based adaptation of secondary path adaptive response in noise-canceling personal audio devices
09/18/14Wireless earpiece with local audio cache
09/18/14Reducing an acoustic intensity vector with adaptive noise cancellation with two error microphones
09/11/14Reduction of supply current variations using compensation current control
09/11/14Utilizing secondary-side conduction time parameters of a switching power converter to provide energy to a load
09/11/14Quantization error reduction in constant output current control drivers
09/11/14Systems and methods for protecting a speaker
09/11/14Systems and methods for protecting a speaker
08/28/14Position estimation an electric motor
08/14/14Ambient noise root mean square (rms) detector
07/31/14Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (anc)
06/19/14Systems and methods for low-power lamp compatibility with a leading-edge dimmer and an electronic transformer
06/19/14Systems and methods for controlling a power controller
03/20/14Powering high-efficiency lighting devices from a triac-based dimmer
02/13/14Power control system for current regulated light sources
01/30/14Systems and methods for low-power lamp compatibility with a trailing-edge dimmer and an electronic transformer
01/16/14Systems and methods for determining location of a mobile device based on an audio signal
01/09/14Systems and methods for low-power lamp compatibility with a trailing-edge dimmer and an electronic transformer
01/09/14Systems and methods for low-power lamp compatibility with a leading-edge dimmer and a magnetic transformer
Patent Packs
01/09/14Systems and methods for determining a type of transformer to which a load is coupled
12/26/13Trailing edge dimmer compatibility with dimmer high resistance prediction
12/26/13Lighting system with lighting dimmer output mapping
12/26/13Determining commutation position for a sensorless permanent magnet brushless motor at low or zero speed using an asymmetric drive pattern
12/26/13System and isolating the undriven voltage of a permanent magnet brushless motor for detection of rotor position
11/14/13Noise burst adaptation of secondary path adaptive response in noise-canceling personal audio devices
11/14/13Frequency and direction-dependent ambient sound handling in personal audio devices having adaptive noise cancellation (anc)
11/14/13Sequenced adaptation of anti-noise generator response and secondary path response in an adaptive noise canceling system
11/14/13Downlink tone detection and adaptation of a secondary path response model in an adaptive noise canceling system
11/14/13Error-signal content controlled adaptation of secondary and leakage path models in noise-canceling personal audio devices
10/31/13Leakage-modeling adaptive noise canceling for earspeakers
10/31/13Coordinated control of adaptive noise cancellation (anc) among earspeaker channels
08/29/13Mixed load current compensation for led lighting
08/01/13Three phase power quality measurement using asynchronous, isolated single phase circuits
06/27/13High voltage linear amplifier driving heavy capacitive loads with reduced power dissipation
06/20/13Adaptive current control timing and responsive current control for interfacing with a dimmer
06/20/13Multi-mode flyback control for a switching power converter
06/20/13Isolation of secondary transformer winding current during auxiliary power supply generation
03/21/13Color mixing of electronic light sources with correlation between phase-cut dimmer angle and predetermined black body radiation function
11/15/12Switching power converter input voltage approximate zero crossing determination
Social Network Patent Pack
11/15/12Controlled power dissipation in a switch path in a lighting system
09/27/12Color coordination of electronic light sources with dimming and temperature responsiveness
09/01/11Multi-led control
07/01/10Electronic system having common mode voltage range enhancement
01/21/10Compensation of field effect on polycrystalline resistors
07/30/09Powering a power supply integrated circuit with sense current







ARCHIVE: New 2017 2016 2015 2014 2013 2012 2011 2010 2009



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