Patents-Review.com
ClassID:

220249 ⎘

H03G3/3026 - CPC Classification

Classification description:

Gain control in amplifiers or frequency changers without distortion of the input signal; Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being discontinuously variable, e.g. controlled by switching

Sub-classes:
Recent Application in this class:
#1
20260088787
2026-03-26

Audio Notifications

 #2
20260066863
2026-03-05

Media Playback System with Maximum Volume Setting

 #3
20250337381
2025-10-30

GAIN STAGE DEGENERATION INDUCTOR SWITCHING WITHOUT THE USE OF SWITCHES

 #4
20250247065
2025-07-31

FILTERING ARCHITECTURE WITH TRANSIENTS MINIMIZATION DUE TO TEMPORARY SCALING

 #5
20250247064
2025-07-31

TRANSIENTS MINIMIZATION OF DIGITAL SYSTEMS DUE TO MEMORY UPDATE

 #6
20250231734
2025-07-17

Volume Limit

 #7
20240223147
2024-07-04

STACKED DIGITAL CURRENT STEERING AUTOMATIC GAIN CONTROL ATTENUATOR

 #8
20240171908
2024-05-23

ELECTRONIC DEVICE WITH SPEAKER PROTECTION MECHANISM

 #9
20240143273
2024-05-02

Volume limit

 #10
20240073636
2024-02-29

ELECTRONIC DEVICE CHARGING VIA AN AUDIO JACK

 #11
20240072748
2024-02-29

Media Playback System with Maximum Volume Setting

 #12
20240022223
2024-01-18

VARIABLE GAIN AMPLIFIER WITH SUBTHRESHOLD BIASING

 #13
20240014791
2024-01-11

AMPLIFIER SYSTEM

 #14
20230412135
2023-12-21

VARIABLE GAIN AMPLIFIER WITH SUBTHRESHOLD BIASING

 #15
20230378923
2023-11-23

PLAY MUTE CIRCUIT AND METHOD

 #16
20230318556
2023-10-05

VARIABLE GAIN LOW NOISE AMPLIFIER AND METHOD FOR CONTROLLING GAIN OF VARIABLE GAIN LOW NOISE AMPLIFIER

 #17
20230297325
2023-09-21

Networked Playback Device

 #18
20230277158
2023-09-07

Ultrasound imaging system memory architecture

 #19
20230170865
2023-06-01

Audio Notifications

 #20
20220360238
2022-11-10

Common mode voltage controller for self-boosting push pull amplifier

 #21
20220272470
2022-08-25

Electronic device charging via an audio jack

 #22
20220255519
2022-08-11

Gain stage degeneration inductor switching without the use of switches

 #23
20220116005
2022-04-14

Media playback system with maximum volume setting

 #24
20220094321
2022-03-24

Current monitoring and amplifier gain control

 #25
20210305952
2021-09-30

Common mode voltage controller for self-boosting push pull amplifier

 #26
20210255821
2021-08-19

Networked playback device

 #27
20210203293
2021-07-01

Deglitching circuit and method in a class-D amplifier

 #28
20210175867
2021-06-10

Amplifier with adjustable high-frequency gain using varactor diodes

 #29
20210103424
2021-04-08

Volume limit

 #30
20210099820
2021-04-01

Electronic device charging via an audio jack

 #31
20210050832
2021-02-18

Variable-frequency charge pump using output voltage threshold control

 #32
20200403589
2020-12-24

Audio notifications

 #33
20200314571
2020-10-01

Electronic device charging via an audio jack

 #34
20200304139
2020-09-24

Analog-to-digital converter with dynamic range enhancer

 #35
20200295723
2020-09-17

Deglitching circuit and method in class-D amplifier

 #36
20200162040
2020-05-21

Power amplifying device and audio equipment

 #37
20200154222
2020-05-14

Electronic device charging via an audio jack

 #38
20200076388
2020-03-05

Media playback system with maximum volume setting

 #39
20200073731
2020-03-05

Audio notifications

 #40
20190379340
2019-12-12

Amplifier with adjustable high-frequency gain using varactor diodes

 #41
20190278558
2019-09-12

Volume limit

 #42
20190261105
2019-08-22

Method and apparatus for controlling a hearing instrument to relieve tinitus, hyperacusis, and hearing loss

 #43
20190253026
2019-08-15

Amplifier unit for operating a piezoelectric sound transducer and/or a dynamic sound transducer, and a sound-generating unit

 #44
20190215392
2019-07-11

Electronic device having a non-contact detection sensor and control method

 #45
20190165748
2019-05-30

Audio system having variable reset volume

 #46
20190149114
2019-05-16

Speaker volume preference learning

 #47
20190131948
2019-05-02

Audio loudness control method and system based on signal analysis and deep learning

 #48
20190121604
2019-04-25

Networked playback device

 #49
20190110128
2019-04-11

Entertainment audio processing

 #50
20190103845
2019-04-04

Adjustable compact line output converter with amplifier trigger

 #51
20190037325
2019-01-31

Electronic device charging via an audio jack

 #52
20180332393
2018-11-15

Entertainment audio processing

 #53
20180278223
2018-09-27

Speaker volume preference learning

 #54
20180269843
2018-09-20

Integrated circuit, circuit assembly and a method for its operation

 #55
20180262173
2018-09-13

Integrated circuit, circuit assembly and a method for its operation

 #56
20180225085
2018-08-09

Volume limit

 #57
20180199142
2018-07-12

Method and apparatus for controlling a hearing instrument to relieve tinitus, hyperacusis, and hearing loss

 #58
20180144658
2018-05-24

Natural orientation induction tool apparatus and method

 #59
20180138882
2018-05-17

Microphone driving device and digital microphone including the same

 #60
20180109283
2018-04-19

Transmit-and-receive module and communication device

 #61
20180083586
2018-03-22

Device and method for volume control

 #62
20180041242
2018-02-08

Transmit-and-receive module and communication device

 #63
20180035205
2018-02-01

Entertainment audio processing

 #64
20180034950
2018-02-01

Electronic device having a non-contact detection sensor and control method

 #65
20180034431
2018-02-01

Integrated circuit arrangement for a microphone, microphone system and method for adjusting one or more circuit parameters of the microphone system

 #66
20170324494
2017-11-09

MODULAR PLATFORM FOR CREATION AND MANIPULATION OF AUDIO AND MUSICAL SIGNALS

 #67
20170302238
2017-10-19

DC offset cancellation circuit

 #68
20170235545
2017-08-17

Leaving group and smart line-in processing

 #69
20170041725
2017-02-09

Electronic device charging via an audio jack

 #70
20170033754
2017-02-02

Multipath digital microphones

 #71
20170021616
2017-01-26

Liquid discharge apparatus, head unit, control unit, and method for controlling liquid discharge apparatus

 #72
20170021615
2017-01-26

Liquid discharge apparatus, head unit, control unit, and method for controlling liquid discharge apparatus

 #73
20160322950
2016-11-03

System and method for audio volume control

 #74
20160313971
2016-10-27

Volume limit

 #75
20160301488
2016-10-13

Modular platform for creation and manipulation of audio and musical signals

 #76
20160286494
2016-09-29

Method and device for reducing power consumption of mobile terminal

 #77
20160249145
2016-08-25

Method and apparatus for controlling a hearing instrument to relieve tinitus, hyperacusis, and hearing loss

 #78
20160142029
2016-05-19

Volume control rates

 #79
20160094194
2016-03-31

System and method for adjusting the sensitivity of a capacitive signal source

 #80
20150381130
2015-12-31

Reducing audio artifacts in a system for enhancing dynamic range of audio signal path

 #81
20150372650
2015-12-24

Audio driver system and method

 #82
20150280678
2015-10-01

Method and apparatus for identifying audio accessory through two pin connection in a two way radio

 #83
20150280670
2015-10-01

Attention-based dynamic audio level adjustment

 #84
20150248888
2015-09-03

User profile based audio adjustment techniques

 #85
20150245153
2015-08-27

Object-based audio loudness management

 #86
20150172809
2015-06-18

Smart-line in processing

 #87
20150163611
2015-06-11

System and method for resetting amplifier of AVN system for vehicle

 #88
20150126144
2015-05-07

Method and apparatus for mode balance for analog FM, digital radio blend logic in an automotive environment

 #89
20150093731
2015-04-02

Natural orientation induction tool apparatus and method

 #90
20150086045
2015-03-26

Smart line-in processing in a group

 #91
20150084693
2015-03-26

Programmable-gain instrumentation amplifier

 #92
20150063593
2015-03-05

Noise and Cross-Talk Attenuation in an Audio System by Offsetting Outputs in Phase

 #93
20140301570
2014-10-09

Voice alarm amplifier

 #94
20140105420
2014-04-17

Broadcast advertisement volume control system and method therefor

 #95
20140093092
2014-04-03

Volume control device and method thereof

 #96
20140086427
2014-03-27

Audio signal level control system

 #97
20140064523
2014-03-06

System and method for adjusting the sensitivity of a capacitive signal source

 #98
20140056441
2014-02-27

POLICY-BASED VEHICLE HORN FUNCTIONS

 #99
20140055260
2014-02-27

POLICY-BASED VEHICLE HORN FUNCTIONS

 #100
20130329911
2013-12-12

Apparatus and method for adjusting volume in terminal

 #101
20130208920
2013-08-15

Peripheral apparatus

 #102
20130089223
2013-04-11

Output Power Limiter in an Audio Amplifier

 #103
20130089161
2013-04-11

Low-Power Modulation in an Amplifier

 #104
20130088297
2013-04-11

PWM re-clocking scheme to reject accumulated asynchronous jitter

 #105
20130088296
2013-04-11

Attenuating noise and cross-talk in an audio system by offsetting outputs in phase

 #106
20130088294
2013-04-11

Attenuating non-linear noise in an amplifier with alternating DC-offset correction

 #107
20130003990
2013-01-03

ELECTRONIC DEVICE AND AUDIO OUTPUT CONTROL METHOD THEREOF

 #108
20120263321
2012-10-18

Method and system for audio level detection and control

 #109
20120263320
2012-10-18

Gain Control Device for an Amplifier and Related Methods, and an Audio Processing Device

 #110
20120263318
2012-10-18

Smart line-in processing

 #111
20120250889
2012-10-04

Automatic volume reduction

 #112
20120230516
2012-09-13

User profile based audio adjustment techniques

 #113
20120229316
2012-09-13

Delta-sigma modulator approach to increased amplifier gain resolution

 #114
20120215547
2012-08-23

Threshold crossing detection

 #115
20120170771
2012-07-05

Method Of Leveling A Plurality Of Audio Signals

 #116
20120119828
2012-05-17

Variable gain amplifier and audio device

 #117
20120086508
2012-04-12

Circuit for thermal protection in audio power amplifier and method thereof

 #118
20120039488
2012-02-16

Level adjustment device

 #119
20120039425
2012-02-16

Zero-crossing gain control system and associated methods

 #120
20120002819
2012-01-05

Audio driver system and method

 #121
20110222711
2011-09-15

Controlling gain during multipath multi-rate audio processing

 #122
20110181789
2011-07-28

VOLUME ADJUSTMENT DEVICE AND VOLUME ADJUSTMENT METHOD

 #123
20110150237
2011-06-23

Signal processing device and signal processing method

 #124
20110128075
2011-06-02

Audio amplifier and method for recognition an audio amplifier

 #125
20110081028
2011-04-07

Addressable amplified speaker assembly and method for addressing the same

 #126
20110064246
2011-03-17

Microphone interface and method of operation

 #127
20100259330
2010-10-14

AGC circuit

 #128
20100131749
2010-05-27

APPARATUS AND METHOD FOR CONTROLLING OPERATING MODE OF MOBILE TERMINAL

 #129
20100054498
2010-03-04

Method and system for audio level detection and control

 #130
20100045374
2010-02-25

Gain adjustment device and method thereof

 #131
20100014682
2010-01-21

AUDIO PROCESSING APPARATUS AND METHOD THEREOF TO PROVIDE HEARING PROTECTION

 #132
20090318100
2009-12-24

Wireless transmitter having multiple power amplifier drivers (PADs) that are selectively biased to provide substantially linear magnitude and phase responses

 #133
20090252347
2009-10-08

Method and Apparatus For Automatic Gain Control

 #134
20090195308
2009-08-06

Automatic gain control circuit

 #135
20090096528
2009-04-16

AGC circuit

 #136
20090066412
2009-03-12

Class-D amplifier circuit

 #137
20080218268
2008-09-11

Automatic gain control circuit

 #138
20080200139
2008-08-21

Gain adjusting apparatus, storage apparatus, and gain adjusting method

 #139
20080130916
2008-06-05

Method and system for controlling gain during multipath multi-rate audio processing

 #140
20080129387
2008-06-05

Amplifier

 #141
20080112575
2008-05-15

Volume control device for vehicle audio system

 #142
20080074185
2008-03-27

AGC circuit

 #143
20080063219
2008-03-13

CONTROLLING AUDIO OUTPUT OF A MOBILE TERMINAL

 #144
20080008336
2008-01-10

Automatic gain control circuit

 #145
20070285160
2007-12-13

Input-gain control apparatus and method

 #146
20070223738
2007-09-27

Volume-based adaptive biasing

 #147
20070120721
2007-05-31

ADC with dynamic range extension

 #148
20060229038
2006-10-12

Wireless transmitter having multiple power amplifier drivers (PADs) that are selectively biased to provide substantially linear magnitude and phase responses

 #149
20060215855
2006-09-28

Addressable amplified speaker assembly and method for addressing the same

 #150
20060093161
2006-05-04

Method and apparatus for proximity sensing in a portable electronic device

 #151
20060093153
2006-05-04

Speaker driving device and audio output system

 #152
20060055462
2006-03-16

Amplifier circuit and gain control method

 #153
20060044065
2006-03-02

AGC circuit

 #154
20060017507
2006-01-26

Automatic level control circuit with improved attack action

 #155
20060015551
2006-01-19

Data processing apparatus and scheme for signal measurement

 #156
20060012720
2006-01-19

Audio system circuitry for automatical sound level control and a television therewith

 #157
20050280470
2005-12-22

Amplifying apparatus with automatic level controller

 #158
20050207594
2005-09-22

Sound signal processing apparatus and sound signal processing method

 #159
20050195996
2005-09-08

Companion microphone system and method

 #160
20050185433
2005-08-25

Device for amplitude adjustment and rectification made with MOS technology

 #161
20050143942
2005-06-30

Multi-channel amplifier having programmable operational characteristics controlled with a serial interface

 #162
20050141732
2005-06-30

Amplifying apparatus

 #163
20050123128
2005-06-09

Gain control

 #164
20050090917
2005-04-28

Method for gradually adjusting the volume level of a digital signal within a predefined time using a volume control circuit

 #165
20050063533
2005-03-24

Microprocessor-controlled full-duplex speakerphone using automatic gain control

 #166
20050030099
2005-02-10

AGC circuit

 #167
15899135
2019-01-08

Auto level in digital radio systems

 #168
14083972
2016-07-12

Enhancement of dynamic range of audio signal path

 #169
13894777
2016-02-16

Apparatus and method for bypassing amplifiers used to amplify signals received by wireless communication systems