Austin, Texas
United States
49
2023-11-23
The entities that hold a legal rights for patent applications filed by inventor Fei Xiaofan:
Xiaofan Fei from Austin, US has applied for patents for these inventions. The list has both pending applications and granted patents:
SYSTEMS AND METHODS FOR RELAYING A MESSAGE FOR A PHYSICAL LEVEL/DATA LINK LEVEL COMMUNICATION PROTOCOL
#2 | 2022-10-13Equalization in a multi-path audio amplifier for canceling variations due to multi-path output impedance differences
#3 | 2022-10-13Signal amplitude-selected signal predistortion in an amplifier
#4 | 2022-10-13Single-inductor multiple output (SIMO) switching power supply having offset common-mode voltage for operating a class-d audio amplifier
#5 | 2022-09-08Frequency-selective common-mode control and output stage biasing in an operational amplifier for a class-D amplifier loop filter
#6 | 2022-09-08Audio processing system signal-level based temporal masking
#7 | 2021-06-10Using a tracking switched-mode power supply to increase efficiency of a current digital-to-analog converter-based output stage
#8 | 2021-06-10Current digital-to-analog converter with high-impedance output
#9 | 2021-06-10Current digital-to-analog converter with warming of digital-to-analog converter elements
#10 | 2021-06-10On-chip inductor with audio headphone amplifier
#11 | 2020-10-29Tracking and correcting gain of open-loop driver in a multi-path processing system
#12 | 2020-07-28Increased noise performance using quantizer code suppression
#13 | 2020-06-30Low-latency audio output with variable group delay
#14 | 2020-06-25Suppression of noise of delta-sigma modulators
#15 | 2020-06-04Dual bootstrapping for an open-loop pulse width modulation driver
#16 | 2020-02-20Polymorphic playback system with signal detection filters of different latencies
#17 | 2020-02-06Variable output resistance in a playback path with open-loop pulse-width modulation driver
#18 | 2020-01-30Gain control in a class-D open-loop amplifier
#19 | 2019-11-12Cross-fading in dual-path pulse width modulation system
#20 | 2019-08-22Dual bootstrapping for an open-loop pulse width modulation driver
#21 | 2019-08-22Full-scale range enhancement in a dual-path pulse width modulation playback system
#22 | 2019-08-22Zero-latency pulse density modulation interface with format detection
#23 | 2019-06-27Cross regulation reduction in single inductor multiple output (SIMO) switching DC-DC converters
#24 | 2019-04-18Calibration of a dual-path pulse width modulation system
#25 | 2019-04-18Calibration of a dual-path pulse width modulation system
#26 | 2019-04-11Digital short detection method of class D amplifier
#27 | 2019-01-15Calibration of a dual-path pulse width modulation system
#28 | 2018-10-11Switching in an audio system with multiple playback paths
#29 | 2018-06-26Switching in amplifier with configurable final output stage
#30 | 2018-06-07Amplifier with configurable final output stage
#31 | 2018-03-29Amplifier with configurable final output stage
#32 | 2018-03-13Calibration for amplifier with configurable final output stage
#33 | 2018-03-01Fully-differential operational amplifier system
#34 | 2017-12-26Systems and methods for measuring inductor current in a switching DC-to-DC converter
#35 | 2017-11-28Opportunistic playback state changes for audio devices
#36 | 2017-01-19Headset management by microphone terminal characteristic detection
#37 | 2016-10-04Systems and methods for measuring inductor current in a switching DC-to-DC converter
#38 | 2016-06-16Switchable secondary playback path
#39 | 2016-03-29Systems and methods for minimizing distortion in an audio output stage
#40 | 2016-03-10Systems and methods for gain calibration of an audio signal path
#41 | 2015-10-22Comparator tracking control scheme with dynamic window length
#42 | 2015-10-15Switchable secondary playback path
#43 | 2011-03-31Thermal feedback for switch mode amplification
#44 | 2010-11-23Thermal feedback for switch mode amplification
#45 | 2008-01-29Non-integer interpolation using cascaded integrator-comb filter
#46 | 2006-05-30Automatic mode detection circuits for configuring a terminal as an output terminal in a first mode as an input terminal in a second mode
#47 | 2005-12-06Signal processing system having an ADC delta-sigma modulator with single-ended input and feedback signal inputs
#48 | 2005-06-02Feedback steering delta-sigma modulators and systems using the same
#49 | 2005-02-08Power supply based audio compression for digital audio amplifier
1325366 ⎘