Inventor

Zhaohui He

Inventor

Austin, TX, US

Overview

2012–2020

Patent span

Electricity

Primary field (CPC H)

Patents· 23 as inventor

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

H02Mprimary

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 systems27%

H05BElectric heating20%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications20%

H03FAmplifiers12%

H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers8%

H03KPulse technique5%

H02JElectric power networks3%

Y10TTechnical subjects covered by former us classification3%

H03MCoding2%

PatentTitleYear

10,862,442Low power dissipation high performance Class-D amplifier2020 10,476,455Apparatus and method of suppressing transient noise during transition for class-D amplifier system having one or more pulse width modulator output paths2019 10,090,814Removal of switching discontinuity in a hybrid switched mode amplifier2018 9,985,587Switched mode converter with variable common mode voltage buffer2018 9,973,156Generation of voltage reference signals in a hybrid switched mode amplifier2018 9,929,664'Prevention of switching discontinuity in a hybrid switched mode amplifier'2018 9,906,196'Hybrid switched mode amplifier'2018 9,577,538'Utilizing secondary-side conduction time parameters of a switching power converter to provide energy to a load'2017 9,520,794'Acceleration of output energy provision for a load during start-up of a switching power converter'2016 9,515,485'Power control system with power drop out immunity and uncompromised startup time'2016 9,502,984'Switching parameter based discontinuous mode-critical conduction mode transition'2016 9,351,356'Primary-side control of a switching power converter with feed forward delay compensation'2016 9,313,840'Control data determination from primary-side sensing of a secondary-side voltage in a switching power converter'2016 9,307,601'Input voltage sensing for a switching power converter and a triac-based dimmer'2016 9,184,666'Active thermal protection for switches'2015 9,178,415'Inductor over-current protection using a volt-second value representing an input voltage to a switching power converter'2015 9,178,444'Multi-mode flyback control for a switching power converter'2015 9,166,485'Quantization error reduction in constant output current control drivers'2015 9,071,144'Adaptive current control timing and responsive current control for interfacing with a dimmer'2015 9,024,541'Utilizing secondary-side conduction time parameters of a switching power converter to provide energy to a load'2015 9,025,347'Switching parameter based discontinuous mode-critical conduction mode transition'2015 8,487,591'Power control system with power drop out immunity and uncompromised startup time'2013 8,212,493'Low energy transfer mode for auxiliary power supply operation in a cascaded switching power converter'2012

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2012–2020Patents assigned to CIRRUS LOGIC INC (17)· patent assignee history

2012–2016Patents assigned to HE ZHAOHUI (7)· patent assignee history

2012–2016Patents assigned to MELANSON JOHN L (5)· patent assignee history

2012–2020Based in Austin, TX, US· patent location history

2016–2017Patents assigned to KONINKLIJKE PHILIPS NV (4)· patent assignee history

2018–2020Patents assigned to CIRRUS LOGIC INT SEMICONDUCTOR LTD (7)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CIRRUS LOGIC INC	17	2012–2020
CIRRUS LOGIC INT SEMICONDUCTOR LTD	7	2018–2020
HE ZHAOHUIself	7	2012–2016
MELANSON JOHN L	5	2012–2016
KONINKLIJKE PHILIPS NV	4	2016–2017

Locations

Location	Patents	Span
Austin, Texas, US	23	2012–2020