ClassID:

224674

H04K3/42 - CPC Classification

Classification description:

Jamming of communication; Counter-measures; Jamming having variable characteristics characterized by the control of the jamming frequency or wavelength

Recent Application in this class:
#1
20250219757
2025-07-03

PERIMETER SECURITY SYSTEM

#2
20250038879
2025-01-30

METHOD AND SYSTEM OF EVALUATION OF AUDIO DEVICE SUSCEPTIBILITY TO ULTRASONIC ATTACK

#3
20240430032
2024-12-26

ULTRA-WIDE BAND RADIO FREQUENCY SYSTEM

#4
20240422477
2024-12-19

HEARING PROTECTION APPARATUS

#5
20240267148
2024-08-08

INTERFERENCE SIGNAL SENDING METHOD AND APPARATUS, ELECTRONIC DEVICE, AND COMPUTER-READABLE STORAGE MEDIUM

#6
20240204905
2024-06-20

NR SCHEME FOR MANAGING EAVESDROPPERS OF PASSIVE RADIOS

#7
20240056215
2024-02-15

METHOD FOR PREVENTING A VOICE FROM BEING INTERCEPTED

#8
20230403096
2023-12-14

APPARATUSES AND METHODS FOR FACILITATING A DENIAL OF ACCESS TO ONE OR MORE FREQUENCY BANDS IN A COMMUNICATION NETWORK OR SYSTEM

#9
20230299870
2023-09-21

INFORMATION LEAKAGE PREVENTION SHIELD DEVICE

#10
20230208550
2023-06-29

Ultra-wide band radio frequency system

#11
20230131816
2023-04-27

WEARABLE MICROPHONE JAMMER

#12
20230063434
2023-03-02

Unstable jamming signal detection

#13
20230016524
2023-01-19

COUNTER MEASURE EFFECTOR WITH SMART SIGHT

#14
20220393786
2022-12-08

System and method for signal re-transmission

#15
20220353008
2022-11-03

Apparatus and method for generating jamming signal, communication system

#16
20220353006
2022-11-03

Algorithm and techniques for high-resolution interference parameter estimation in low-swap environment

#17
20220329345
2022-10-13

ADJUSTABLE NULL STEERING IN A STATIONARY NETWORK

#18
20220311788
2022-09-29

Wireless threat detection device, system, and methods to detect signals in wideband RF systems and localize related time and frequency information based on deep learning

#19
20220247511
2022-08-04

Protecting transmissions against jamming

#20
20220209885
2022-06-30

Method and apparatus for adaptive anti-jamming communications based on deep double-Q reinforcement learning

#21
20220069937
2022-03-03

Method and apparatus for generating noise signal

#22
20220038202
2022-02-03

Ultra-wide band electromagnetic jamming projector

#23
20220006557
2022-01-06

Apparatuses, methods, and software for secure short-range wireless communication

#24
20210367700
2021-11-25

Drone defense system

#25
20210359781
2021-11-18

Handheld portable countermeasure device against unmanned systems

#26
20210344378
2021-11-04

SYSTEM AND METHOD FOR NEAR FIELD COMMUNICATIONS HAVING LOCAL SECURITY

#27
20210320744
2021-10-14

Communication control device and communication control system

#28
20210281354
2021-09-09

METHOD AND APPARATUS FOR DETECTING AND JAMMING TRANSMITTERS AND RECEIVERS

#29
20210218429
2021-07-15

Self-tuning N-path filter

#30
20210175995
2021-06-10

Method and apparatus for secure communication in wireless communication system

#31
20210013986
2021-01-14

Jamming Wi-Fi communications

#32
20210011120
2021-01-14

Narrowband antijam signaling system (NASS) and device

#33
20200374028
2020-11-26

Ultra-wide band electromagnetic jamming projector

#34
20200366402
2020-11-19

Programmable multi-waveform RF generator for use as battlefield decoy

#35
20200358550
2020-11-12

Apparatuses, methods, and software for secure short-range wireless communication

#36
20200343992
2020-10-29

Handheld portable countermeasure device against unmanned systems

#37
20200304228
2020-09-24

Wideband photonic radio frequency (RF) noise generator

#38
20200252412
2020-08-06

Wireless threat detection device, system, and methods to detect signals in wideband RF systems and localize related time and frequency information based on deep learning

#39
20200177991
2020-06-04

Sound masking system

#40
20200136745
2020-04-30

Jamming device and jamming method

#41
20200112342
2020-04-09

SYSTEM AND METHOD FOR NEAR FIELD COMMUNICATIONS HAVING LOCAL SECURITY

#42
20190280800
2019-09-12

Barrage jammer with contoured amplitude

#43
20190268087
2019-08-29

Energy-efficient reactive jamming of frequency-hopping spread spectrum (FHSS) signals using software-defined radios

#44
20190265006
2019-08-29

Method and apparatus for repelling a detectable drone

#45
20190238185
2019-08-01

SYSTEM AND METHOD FOR NEAR FIELD COMMUNICATIONS HAVING LOCAL SECURITY

#46
20190181974
2019-06-13

Apparatus and method for physical layer security commuication in wireless communication system

#47
20190180542
2019-06-13

Wireless key closing device for a motor vehicle, motor vehicle, and method for operating the closing device

#48
20190173605
2019-06-06

Dual-grip portable countermeasure device against unmanned systems

#49
20190158212
2019-05-23

Portable countermeasure device against unmanned systems

#50
20190073991
2019-03-07

NETWORKED SOUND MASKING SYSTEM

#51
20190033427
2019-01-31

Method for jamming synthetic aperture radars and associated device

#52
20180367237
2018-12-20

Dual-grip portable countermeasure device against unmanned systems

#53
20180351690
2018-12-06

Jamming device and jamming method

#54
20180351689
2018-12-06

Jamming device and jamming method

#55
20180351688
2018-12-06

Use of Cinder Block or Concrete to Re-Radiate an RF Signal

#56
20180331764
2018-11-15

Down conversion system and method

#57
20180254848
2018-09-06

Portable countermeasure device against unmanned systems

#58
20180167369
2018-06-14

Establishing a secure uplink channel by transmitting a secret word over a secure downlink channel

#59
20180123259
2018-05-03

Flight interference apparatus

#60
20180122353
2018-05-03

Sound masking in open-plan spaces using natural sounds

#61
20180041831
2018-02-08

Sound masking system

#62
20180007548
2018-01-04

Method and apparatus for providing broadcast channel encryption to enhance cellular network security

#63
20180006759
2018-01-04

Systems and methods for radio frequency hopping communications jamming utilizing software defined radio platforms

#64
20170261615
2017-09-14

GNSS jamming signal detection

#65
20170237468
2017-08-17

SYSTEM AND METHOD FOR NEAR FIELD COMMUNICATIONS HAVING LOCAL SECURITY

#66
20170207877
2017-07-20

Interference mitigation in WLAN/WPAN co-existence networks

#67
20170187485
2017-06-29

Threat response signal inhibiting apparatus for radio frequency controlled devices and corresponding methods

#68
20170163372
2017-06-08

Radio wave jamming system, radio wave jamming apparatus, and radio wave jamming method

#69
20170134116
2017-05-11

Electromagnetic spectrum management system

#70
20170045608
2017-02-16

Programmable apparatus for synthesized filter notch

#71
20170026076
2017-01-26

Systems and method for adaptive frequency management utilizing multiple frequency sets

#72
20160380717
2016-12-29

Data communication using bandwidth modulation

#73
20160380654
2016-12-29

Methods and apparatus for data communication using bandwidth modulation

#74
20160353354
2016-12-01

Selective control of mobile devices for protecting high speed moving convoy

#75
20160329985
2016-11-10

Systems and methods for radio frequency hopping communications jamming utilizing software defined radio platforms

#76
20160294502
2016-10-06

Event sequencer for a radio frequency system

#77
20160294501
2016-10-06

Communications system

#78
20160269143
2016-09-15

Automobile ignition powered, momentary push button switch controlled, cellular phone jammer with emergency capability

#79
20160191197
2016-06-30

Automated banking machine that outputs interference signals to jam reading ability of unauthorized card reader devices

#80
20160189701
2016-06-30

Networked sound masking system

#81
20160127075
2016-05-05

Threat response signal inhibiting apparatus for radio frequency controlled devices and corresponding methods

#82
20160112965
2016-04-21

Anchor carrier in a multiple carrier wireless communication system

#83
20160107610
2016-04-21

Immobiliser system with controllable inhibiting means

#84
20160056915
2016-02-25

Facilitation of security employing a femto cell access point

#85
20150382188
2015-12-31

Method and apparatus for providing broadcast channel encryption to enhance cellular network security

#86
20150350780
2015-12-03

Sound masking system

#87
20150349914
2015-12-03

Analog RF memory system

#88
20150281829
2015-10-01

Collaboratively processing audio between headset and source to mask distracting noise

#89
20150270923
2015-09-24

Transmit-reference methods in software defined radio platforms for communication in harsh propagation environments and systems thereof

#90
20150229434
2015-08-13

Electronic countermeasures transponder system

#91
20150200745
2015-07-16

WIRELESS SIGNAL INTERRUPTER FOR IN-VEHICLE MOBILE DEVICE SIGNALS

#92
20150195058
2015-07-09

Threat response signal inhibiting apparatus for radio frequency controlled devices and corresponding methods

#93
20150194144
2015-07-09

Directional sound masking

#94
20150163012
2015-06-11

Signal detection in the presence of a jamming signal

#95
20150147957
2015-05-28

Systems and methods for radio frequency hopping communications jamming utilizing software defined radio platforms

#96
20150080041
2015-03-19

Communication device for rail vehicle, rail vehicle equipped with said device

#97
20150056915
2015-02-26

Regulation of service in restricted telecommunication service area

#98
20140362774
2014-12-11

Circuits and method to enable efficient generation of direct digital synthesizer based waveforms of arbitrary bandwidth

#99
20140334634
2014-11-13

Hunting noise masking systems and methods

#100
20140309991
2014-10-16

Methods and apparatus for masking speech in a private environment

#101
20140227962
2014-08-14

Regulation of service in restricted telecommunication service area

#102
20140206279
2014-07-24

Method and system for intelligent jamming signal generation

#103
20140170963
2014-06-19

Method for jamming communications in an open-loop-controlled network

#104
20140158768
2014-06-12

Automated banking machine that outputs interference signals to jam reading ability of unauthorized card reader devices

#105
20140114623
2014-04-24

System and method for controlling and monitoring a sound masking system from an electronic floorplan

#106
20130316638
2013-11-28

Wideband intelligent jamming control apparatus and method

#107
20130288669
2013-10-31

Airborne onboard base transceiver station for mobile communication

#108
20130281005
2013-10-24

Facilitation of security employing a femto cell access point

#109
20130163772
2013-06-27

Sound masking device and sound masking method

#110
20130023201
2013-01-24

Systems and methods for radio frequency hopping communications jamming utilizing software defined radio platforms

#111
20130015374
2013-01-17

Countermeasure device for a mobile tracking device

#112
20130012205
2013-01-10

Systems and methods for the detection of transmission facilities

#113
20120329382
2012-12-27

FEMTO jamming of macro pilot

#114
20120322443
2012-12-20

AIRBORNE ONBOARD BASE TRANSCEIVER STATION FOR MOBILE COMMUNICATION

#115
20120299762
2012-11-29

Radio frequency particles

#116
20120244794
2012-09-27

Regulation of service in restricted telecommunication service area

#117
20120225619
2012-09-06

Method and device for estimation of the transmission characteristics of a radio frequency system

#118
20120219160
2012-08-30

Variable noise masking during periods of substantial silence

#119
20120213513
2012-08-23

Direct generation semiconductor IRCM laser system

#120
20120212363
2012-08-23

Method and device for neutralizing a target

#121
20120196525
2012-08-02

Method and apparatus of performing video programming security control

#122
20120178358
2012-07-12

Methods of suppressing GSM wireless device threats in dynamic or wide area static environments using minimal power consumption and collateral interference

#123
20120163417
2012-06-28

Information leakage prevention apparatus and method

#124
20120122402
2012-05-17

Systems and methods for detection of transmission facilities

#125
20120115507
2012-05-10

Systems and methods for the detection of transmission facilities

#126
20120101658
2012-04-26

High power laser system

#127
20120045984
2012-02-23

Method of jamming

#128
20120040602
2012-02-16

Method and device for estimation of the transmission characteristics of a radio frequency system

#129
20110279322
2011-11-17

Signal transmission surveillance system

#130
20110275308
2011-11-10

GPS aided open loop coherent focusing

#131
20110243192
2011-10-06

Method and apparatus for tracking a frequency-hopped signal

#132
20110235742
2011-09-29

High power pulse generator

#133
20110223851
2011-09-15

Multi-band jammer including airborne systems

#134
20110217919
2011-09-08

Wireless telecommunications signal inhibition

#135
20110142250
2011-06-16

GRADIENT COIL NOISE MASKING FOR MPI DEVICE

#136
20110123037
2011-05-26

SOUND MASKING SYSTEM AND METHOD USING VIBRATION EXCITER

#137
20110122011
2011-05-26

Digital multi-channel ECM transmitter

#138
20110100202
2011-05-05

Signal transmission surveillance system

#139
20110100201
2011-05-05

Signal transmission surveillance system

#140
20110098037
2011-04-28

Systems and methods for the detection of transmission facilities

#141
20110097991
2011-04-28

Ionizing communication disruptor unit

#142
20110092151
2011-04-21

Femto jamming of macro pilot

#143
20110086614
2011-04-14

Regulation of service in restricted telecommunication service area

#144
20110036999
2011-02-17

Countermeasure method for a mobile tracking device

#145
20110036998
2011-02-17

Countermeasure device for a mobile tracking device

#146
20110021135
2011-01-27

RF redirection module and system incorporating the RF redirection module

#147
20110019819
2011-01-27

System and method of masking electromagnetic interference (EMI) emissions of a circuit

#148
20100309951
2010-12-09

Transmit-reference methods in software defined radio platforms for communication in harsh propagation environments and systems thereof

#149
20100304661
2010-12-02

Sweeping mode of jamming system

#150
20100302087
2010-12-02

Smart signal jammer

#151
20100289686
2010-11-18

Method for permanent disturbance/destruction of electronics, in particular of a blast case or the like

#152
20100283658
2010-11-11

Anti jamming system

#153
20100283656
2010-11-11

METHOD AND SYSTEM FOR JAMMING SIMULTANEOUSLY WITH COMMUNICATION USING OMNI-DIRECTIONAL ANTENNA

#154
20100282052
2010-11-11

Radio frequency jammer method

#155
20100272285
2010-10-28

Masking of pure tones within sound from a noise generating source

#156
20100265116
2010-10-21

Anti jamming system

#157
20100255771
2010-10-07

Crisis response system including cell jamming device

#158
20100176867
2010-07-15

Noise generator

#159
20100170383
2010-07-08

Methods and apparatuses for detecting and neutralizing remotely activated explosives

#160
20100166180
2010-07-01

CLOAKING OF RADIO SIGNALS

#161
20100128761
2010-05-27

Look through mode of jamming system

#162
20100104112
2010-04-29

Variable noise masking during periods of substantial silence

#163
20100093270
2010-04-15

Signal transmission surveillance system

#164
20100068988
2010-03-18

System and method for covertly disabling improvised explosive devices

#165
20100034163
2010-02-11

Anchor carrier in a multiple carrier wireless communication system

#166
20100029296
2010-02-04

Systems and methods for the detection of transmission facilities

#167
20100022181
2010-01-28

High efficiency and high power patch antenna and method of using

#168
20090306798
2009-12-10

System and method for monitoring/controlling a sound masking system from an electronic floorplan

#169
20090237289
2009-09-24

Multi-band jammer

#170
20090215387
2009-08-27

IN-VEHICLE CELLULAR DEVICE BLOCKER TO RESTRICT CELLULAR USE FOR OPERATOR

#171
20090214205
2009-08-27

COMMUNICATIONS AND DATA LINK JAMMER INCORPORATING FIBER-OPTIC DELAY LINE TECHNOLOGY

#172
20090209196
2009-08-20

Methods of suppressing GSM wireless device threats in dynamic or wide area static environments using minimal power and collateral interference

#173
20090170423
2009-07-02

Wireless telecommunications signal inhibition

#174
20090156116
2009-06-18

Method and apparatus for heavy-tailed waveform generation used for communication disruption

#175
20090116659
2009-05-07

Networked sound masking system with centralized sound masking generation

#176
20090093211
2009-04-09

Device for preventing eavesdropping through speaker

#177
20090081943
2009-03-26

SYSTEM AND METHOD FOR NEAR FIELD COMMUNICATIONS HAVING LOCAL SECURITY

#178
20090074199
2009-03-19

SYSTEM FOR PROVIDING A REDUCTION OF AUDIABLE NOISE PERCEPTION FOR A HUMAN USER

#179
20090047897
2009-02-19

Jamming device for mobile communication

#180
20090041241
2009-02-12

Near field communications system having enhanced security

#181
20090029675
2009-01-29

Vehicle safety device for reducing driver distractions

#182
20080299965
2008-12-04

Airborne onboard base transceiver station for mobile communication

#183
20080268769
2008-10-30

Apparatus and method for interfering with wireless communications devices in response to transmission power detection

#184
20080268768
2008-10-30

Apparatus and method for interfering with wireless communications devices positioned in a volume occupied by a human driver

#185
20080268767
2008-10-30

Apparatus and method for selective interfering with wireless communications devices

#186
20080254737
2008-10-16

Ionizing communication disruptor unit

#187
20080243211
2008-10-02

User selectable masking sounds for medical instruments

#188
20080237346
2008-10-02

System for secure communication between a contactless card reader and a card

#189
20080219179
2008-09-11

Transmission device, transmission method, reception device, and communication system

#190
20080191924
2008-08-14

Method and apparatus for protecting personnel and material from RF-based threats using ultra-wideband (UWB) transmission

#191
20080174469
2008-07-24

METHOD AND SYSTEM FOR DEFENCE AGAINST SURFACE-TO-AIR MISSILES

#192
20080169958
2008-07-17

Localized jamming of navigation signals

#193
20080089524
2008-04-17

Audio signal processing system

#194
20080084345
2008-04-10

BROADBAND MULTI-CHANNEL DETECTOR WITH SIGNAL AND JAMMING DISCRIMINATION

#195
20080083320
2008-04-10

System, Method, and Apparatus for Countering Improvised Explosive Devices (IED)

#196
20070297489
2007-12-27

Method and apparatus to perform reactive jamming while simultaneously avoiding friendly pseudo-random frequency hopping communications

#197
20070293142
2007-12-20

Secure Contactless Communication Device and Method

#198
20070206177
2007-09-06

Fiber laser based directional infrared countermeasure (DIRCM) system

#199
20070203698
2007-08-30

Disruption of speech understanding by adding a privacy sound thereto

#200
20070194931
2007-08-23

RFID—sensor system for lateral discrimination

#201
20070159991
2007-07-12

Systems and methods for detection of transmission facilities

#202
20070133816
2007-06-14

Sound masking system

#203
20070116093
2007-05-24

Method and apparatus to perform surgical reactive jamming while maintaining simultaneous tactical communications

#204
20070099559
2007-05-03

Cellular phone jammer that permits cellular communication in an emergency

#205
20070083361
2007-04-12

Method and apparatus for disturbing the radiated voice signal by attenuation and masking

#206
20060264168
2006-11-23

Processor based frequency selective jamming and communications system

#207
20060240790
2006-10-26

Wireless transmitter

#208
20060212195
2006-09-21

Vehicle data recorder and telematic device

#209
20060164283
2006-07-27

Method, system and apparatus for maximizing a jammer's time-on-target and power-on-target

#210
20060164282
2006-07-27

Method and apparatus for protecting personnel from RF-triggered explosive devices (RTED) using ultra-wideband (UWB) transmission

#211
20060153281
2006-07-13

Method and apparatus for automatic jammer frequency control of surgical reactive jammers

#212
20060153280
2006-07-13

Method and apparatus for surgical high speed follower jamming based on selectable target direction

#213
20060109983
2006-05-25

Signal masking and method thereof

#214
20060105701
2006-05-18

Jamming system

#215
20060060074
2006-03-23

Radio frequency jammer

#216
20060038677
2006-02-23

System and method for monitoring and enforcing a restricted wireless zone

#217
20060009969
2006-01-12

Auto-adjusting sound masking system and method

#218
20060001568
2006-01-05

Method and apparatus for providing an electronic warfare target simulator

#219
20050065778
2005-03-24

Secure speech

#220
20050041728
2005-02-24

System and method to autonomously and selectively jam frequency hopping signals in near real-time

#221
20050020244
2005-01-27

RF firewall for a wireless network

#222
18464632
2026-03-10

Cognitive radio device providing radio frequency (RF) jammer capabilities based upon quadratic unconstrained binary optimization (QUBO) objective function and related methods

#223
16436197
2023-11-07

Adaptive digital radio frequency memory for coherent response synthesis

#224
16115218
2020-01-28

Distributed ledger for wireless channel assignment

#225
15640550
2018-01-30

System, method, and apparatus for detecting and jamming wireless devices

#226
15407184
2020-12-15

System and method for the detection of transmission facilities

#227
15206260
2019-07-30

Systems and methods for controlling wireless communication devices