ClassID:

223911

H04B10/524 - CPC Classification

Classification description:

Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication; Transmitters; Details of coding or modulation Pulse modulation

Recent Application in this class:
#1
20260066993
2026-03-05

ACTIVE OPTICAL INTERCONNECT WITH MULTIPLE LIGHT SOURCES AND METHOD OF MODULATION

#2
20260046032
2026-02-12

SIGNAL PROCESSING DEVICE AND SIGNAL PROCESSING METHOD

#3
20260039391
2026-02-05

MULTI-CHARACTERISTIC LASER PULSE COMMUNICATIONS

#4
20250350367
2025-11-13

Method and System for Multi-Level Amplitude Optical Signal Generation Using Binary Level Keying of Multiple Sources

#5
20250323723
2025-10-16

CHARACTERIZING OPTICAL TRANSMITTER QUALITY WITH FEC ENCODED DATA

#6
20250309991
2025-10-02

MEASUREMENT APPLICATION DEVICE, SIGNAL FILTER DEVICE, AND METHOD

#7
20250279830
2025-09-04

OPTICAL COMMUNICATION SYSTEM FOR PASSIVE OPTICAL NETWORKS AND HIGH DATA RATE COMMUNICATION

#8
20250279829
2025-09-04

BIDIRECTIONAL SYSTEM FOR OPTICAL PROCESSING

#9
20250253947
2025-08-07

METHOD AND SYSTEM FOR BIDIRECTIONAL OPTICAL COMMUNICATION WITH PHASE SHIFTING

#10
20250247155
2025-07-31

OPTICAL COMPUTING DEVICE FOR ARTIFICIAL INTELLIGENCE ACCELERATORS AND METHOD OF OPERATING THE SAME

#11
20250224567
2025-07-10

FILTERING UNIT, OPTICAL TRANSMITTER UNIT, OPTICAL RECEIVER UNIT AND OPTICAL TRANSCEIVER UNIT

#12
20250219730
2025-07-03

LIDAR BASED COMMUNICATION

#13
20250158718
2025-05-15

RADIATION SOURCE DRIVER FOR ACCELERATED MODULATION IN AN OPTICAL WIRELESS COMMUNICATION SYSTEM

#14
20250112696
2025-04-03

OPTICAL WIRELESS TRANSMISSION SYSTEM, TRANSMISSION DEVICE, AND OPTICAL WIRELESS TRANSMISSION METHOD

#15
20240405870
2024-12-05

Bi-directional optical communication system

#16
20240356648
2024-10-24

PAM-4 TRANSCEIVER FOR CAPACITIVE-DRIVEN CHANNELS CAPABLE OF CANCELING CROSSTALK AND OPERATION METHOD THEREOF

#17
20240348340
2024-10-17

APPARATUS AND METHOD FOR COMPENSATING PERFORMANCE OF TRANSMITTER IN OPTICAL COMMUNICATION SYSTEM

#18
20240313879
2024-09-19

SYSTEM FOR PULSED LASER OPTICAL DATA TRANSMISSION WITH RECEIVER RECOVERABLE CLOCK

#19
20240259105
2024-08-01

METHOD AND APPARATUS TO INCREASE OPTIC LINE CAPACITY

#20
20240244354
2024-07-18

IN-NETWORK OPTICAL INFERENCE

#21
20240214074
2024-06-27

Optical delay calibration of optical modules

#22
20240205058
2024-06-20

Digital Pulse-Position Noise Shift Keying to Communicate Information

#23
20240204880
2024-06-20

Pulse Noise Modulation to Encode Data

#24
20240187106
2024-06-06

COHERENT DETECTION METHOD, APPARATUS, AND SYSTEM

#25
20240129652
2024-04-18

APPARATUS AND METHOD FOR TRANSMITTING SEGMENTS FOR A DOWNSTREAM TRANSMISSION AND APPARATUS AND METHOD FOR RECEIVING SEGMENTS OF A DOWNSTREAM TRANSMISSION FOR A PASSIVE OPTICAL NETWORK

#26
20240118395
2024-04-11

METHODS FOR DRIVING OPTICAL LOADS AND DRIVER CIRCUITS FOR OPTICAL LOADS

#27
20240106543
2024-03-28

TRANSMISSION CONTROL TECHNIQUES IN QUANTUM CRYPTOGRAPHIC COMMUNICATION SYSTEM

#28
20240089006
2024-03-14

Network Security and Variable Pulse Wave Form with Continuous Communication

#29
20230361906
2023-11-09

System for pulsed laser optical data transmission with receiver recoverable clock

#30
20230344521
2023-10-26

Communication system and method for controlling communication system

#31
20230254045
2023-08-10

Optical sender and method for deciding modulation timing correctness

#32
20230246715
2023-08-03

APPARATUSES AND METHODS FOR GENERATING AN OPTICAL SIGNAL IN AN OPTICAL COMMUNICATION NETWORK

#33
20230239055
2023-07-27

Adjusting eye heights and optical power levels of a multi-level optical signal

#34
20230231358
2023-07-20

Optical communication interface

#35
20230198617
2023-06-22

Lidar based communication

#36
20230155686
2023-05-18

Network security and variable pulse wave form with continuous communication

#37
20230136924
2023-05-04

Method of operating a bidirectional optical transmission link and corresponding optical transmission link

#38
20230127342
2023-04-27

Apparatus for facilitating a photovoltaic device to provide a wireless communication channel

#39
20230111197
2023-04-13

PIN SHARING FOR PHOTONIC PROCESSORS

#40
20230094424
2023-03-30

Coherent receiver with mixed signal processing

#41
20230064493
2023-03-02

Intelligent visible light with a gallium and nitrogen containing laser source

#42
20230045986
2023-02-16

Adjusting eye heights and optical power levels of a multi-level optical signal

#43
20230034936
2023-02-02

Optical transmission device and optical communication system

#44
20220394218
2022-12-08

Optical cable for transmission of audio and video signals

#45
20220393763
2022-12-08

Optical cable for transmission of audio and video signals

#46
20220329325
2022-10-13

Microcontroller and signal modulation method

#47
20220308575
2022-09-29

UAV guidance system and hand control unit

#48
20220303018
2022-09-22

Control device of modulating signal and method

#49
20220278751
2022-09-01

Optical-time-division-multiplexed transmission system using sinusoidally modulated optical signal as input pulse source

#50
20220255623
2022-08-11

Laser based white light source configured for communication

#51
20220239378
2022-07-28

Apparatus comprising serially connected electro-absorption modulators

#52
20220231765
2022-07-21

Method and system for a distributed optical transmitter with local domain splitting

#53
20220216920
2022-07-07

Apparatus and method for generating PAM-4 optical signal

#54
20220216919
2022-07-07

Consolidating multiple electrical data signals into an optical data signal on a multi-chip module using ASIC for controlling a photonics transceiver

#55
20220190927
2022-06-16

Optical signal communication method and device

#56
20220190926
2022-06-16

Optical transmitter input resistance measurement and encoder/driver modulation current configuration techniques

#57
20220182150
2022-06-09

Encoding and decoding communications traffic in a pulse amplitude modulation format and optical apparatus for same

#58
20220166518
2022-05-26

Coherent receiver with mixed signal processing

#59
20220158729
2022-05-19

Combined communication and ranging functionality on a spacecraft

#60
20220150060
2022-05-12

Continuous-variable quantum key distribution (CV-QKD) method and system

#61
20220149950
2022-05-12

Modulation device, control device, optical system, lithography system and method

#62
20220131614
2022-04-28

Symbol generation and frame synchronization for multipulse-pulse position modulation

#63
20220085892
2022-03-17

SYSTEMS AND METHODS FOR HIGH SPEED INFORMATION TRANSFER

#64
20220029380
2022-01-27

Optical communication interface

#65
20220014270
2022-01-13

Lidar based communication

#66
20220006532
2022-01-06

Communicating over a free-space optical channel using distribution matching

#67
20210400476
2021-12-23

VLC in streets

#68
20210384979
2021-12-09

INFORMATION COMMUNICATION USING EQUIPMENT INDICATOR LIGHTS

#69
20210376928
2021-12-02

Intelligent visible light with a gallium and nitrogen containing laser source

#70
20210281450
2021-09-09

Signal shaping device, shaping termination device, signal shaping method, and optical transmission method

#71
20210273728
2021-09-02

Network security and variable pulse wave form with continuous communication

#72
20210226707
2021-07-22

Wireless optical transceiver based on polarization pulse position and differential phase shift modulation and method thereof

#73
20210224454
2021-07-22

Pin sharing for photonic processors

#74
20210211203
2021-07-08

Coherent receiver with mixed signal processing

#75
20210173238
2021-06-10

Optical modulation for optoelectronic processing

#76
20210159977
2021-05-27

Laser based white light source configured for communication

#77
20210152252
2021-05-20

System for achieving multiple bits per symbol in optical communications systems by combining spatial domain multiplexing and pulse amplitude modulation

#78
20210135762
2021-05-06

Coherent receiver with mixed signal processing

#79
20210126715
2021-04-29

Acoustic to optical communications systems and methods

#80
20210111803
2021-04-15

Hub-leaf laser synchronization

#81
20210111802
2021-04-15

Hub-leaf laser synchronization

#82
20210091859
2021-03-25

Receiver for receiving information transmitted using very weak light pulses, a system for transmitting information comprising such a receiver and a method for transmitting information using very weak light pulses

#83
20210083776
2021-03-18

Light source for quantum communication system, and encoding device

#84
20210058161
2021-02-25

Unequal spacing on multilevel signals

#85
20210050708
2021-02-18

Multi-pulse generation for pulsed laser diodes using low-side drivers

#86
20210036789
2021-02-04

Information Transfer Using Discrete-Frequency Signals and Instantaneous Frequency Measurement

#87
20210028873
2021-01-28

Information Transfer Using Discrete-Frequency Signals and Instantaneous Frequency Measurement

#88
20210006332
2021-01-07

Lidar based communication

#89
20200403696
2020-12-24

Intelligent visible light with a gallium and nitrogen containing laser source

#90
20200366368
2020-11-19

Data communication system including a high-speed main channel and a low-speed stand-by channel with high reliability

#91
20200358591
2020-11-12

System and method for encoding and decoding communication signals

#92
20200358532
2020-11-12

Network security and variable pulse wave form with continuous communication

#93
20200350993
2020-11-05

Method and system for a distributed optical transmitter with local domain splitting

#94
20200333438
2020-10-22

Methods for driving optical loads and driver circuits for optical loads

#95
20200328830
2020-10-15

INFORMATION TRANSFER USING DISCRETE-FREQUENCY SIGNALS AND INSTANTANEOUS FREQUENCY MEASUREMENT

#96
20200304209
2020-09-24

Transceiving With a Predetermined Frequency Spacing

#97
20200228204
2020-07-16

Fiber delivered laser based white light source configured for communication

#98
20200205250
2020-06-25

Adaptive power control for pulsed laser diodes

#99
20200195353
2020-06-18

Optical transmitter, method and storage medium in optical network

#100
20200169397
2020-05-28

Pulsed light high-speed polarization locking method of continuous-variable quantum key distribution system

#101
20200145111
2020-05-07

Methods and apparatus for tuning lookup table circuits in a transmitter of optical and electrical communication systems

#102
20200112374
2020-04-09

OPTICAL LINK ARCHITECTURE BASED ON WIRELINE EQUALIZATION TECHNIQUES

#103
20200092007
2020-03-19

Data transmission method, device, and system

#104
20200084075
2020-03-12

Modulator and signal transmission system

#105
20200067601
2020-02-27

Quantum communication system, transmitting apparatus, and receiving apparatus

#106
20200036456
2020-01-30

HYBRID TECHNIQUES FOR INFORMATION TRANSFER USING DISCRETE-FREQUENCY SIGNALS AND INSTANTANEOUS FREQUENCY MEASUREMENT

#107
20200036449
2020-01-30

Method and system for a distributed optical transmitter with local domain splitting

#108
20190386647
2019-12-19

Method and system for arbitrary optical pulse generation

#109
20190372589
2019-12-05

Real-number photonic encoding

#110
20190363917
2019-11-28

Signal generating device, signal generating method, error rate measuring apparatus, and error rate measuring method

#111
20190363794
2019-11-28

Transmitting device, transmission control device, and transmission method

#112
20190356391
2019-11-21

System for achieving multiple bits per symbol in optical communications systems by combining spatial domain multiplexing and pulse amplitude modulation

#113
20190342979
2019-11-07

Coded light modulation arangement

#114
20190334618
2019-10-31

Smart laser light for communication

#115
20190326988
2019-10-24

Smart laser light for a vehicle

#116
20190288552
2019-09-19

Pulsed power transmission apparatus

#117
20190268070
2019-08-29

Optical communication system, transmitter and receiver

#118
20190223232
2019-07-18

Terminal and communication method

#119
20190199439
2019-06-27

Signal modulation and demodulation method and system, and apparatus

#120
20190190613
2019-06-20

Method of frequency encoding beacons for dismounted identification, friend or foe

#121
20190190612
2019-06-20

Methods and systems for multi-level beacon tone modulation of an optical data signal

#122
20190181966
2019-06-13

Information transfer using discrete-frequency signals and instantaneous frequency measurement

#123
20190181965
2019-06-13

Information transfer using discrete-frequency signals and instantaneous frequency measurement

#124
20190181958
2019-06-13

Optical link architecture based on wireline equalization techniques

#125
20190173586
2019-06-06

PAM-4 transmitter precoder for 1+0.5D PR channels

#126
20190165867
2019-05-30

OPTICAL RECEIVER AND CONTROL METHOD OF THE OPTICAL RECEIVER

#127
20190149393
2019-05-16

Nonlinearity pre-compensation of high order modulation transmissions

#128
20190140742
2019-05-09

Network Security and Variable Pulse Wave Form with Continuous Communication

#129
20190139950
2019-05-09

Optical modulators

#130
20190132000
2019-05-02

Optical camera communication apparatus and method

#131
20190123837
2019-04-25

Information transfer using discrete-frequency signals and instantaneous frequency measurement

#132
20190123836
2019-04-25

Information transfer using discrete-frequency signals and instantaneous frequency measurement

#133
20190109655
2019-04-11

Information transfer using discrete-frequency signals and instantaneous frequency measurement

#134
20190097722
2019-03-28

Intelligent visible light with a gallium and nitrogen containing laser source

#135
20190028204
2019-01-24

Optical transmission module

#136
20190025614
2019-01-24

Method of controlling semiconductor optical amplifier and optical amplifying apparatus

#137
20190020417
2019-01-17

RF-photonic pulse doppler radar

#138
20190020416
2019-01-17

Optical signal modulation

#139
20190007142
2019-01-03

LIGHT IDENTIFICATION TRANSMISSION DEVICE AND LIGHT IDENTIFICATION COMMUNICATION SYSTEM

#140
20180375586
2018-12-27

Delay-modulation-based non-uniform optical sampling and frequency disambiguation

#141
20180367218
2018-12-20

Light source modulation circuit, light source modulation method, and projector apparatus

#142
20180294884
2018-10-11

Enhanced digital diagnostics for optical PAM apparatus

#143
20180269990
2018-09-20

Techniques for providing adaptive power distribution using a multi-node network of power feed branching units (PFBUs) and an undersea optical communication system using same

#144
20180262273
2018-09-13

Driver module for Mach Zehnder modulator

#145
20180219706
2018-08-02

Data transmission device for modulating amplitude of PAM-4 signal using toggle serializer and method of operating the same

#146
20180205465
2018-07-19

Optical transmitter, optical modulator module, and optical transmission system

#147
20180205464
2018-07-19

Optical PAM modulation with dual drive Mach Zehnder modulators and low complexity electrical signaling

#148
20180198534
2018-07-12

Optical link architecture based on wireline equalization techniques

#149
20180198525
2018-07-12

Techniques for optical wireless communication

#150
20180183521
2018-06-28

Optical pulse amplitude modulation transmission using digital pre-compensation

#151
20180167144
2018-06-14

Binomial pulse-position modulation (BPPM) using sparse recovery for free-space optical fading/turbulent channels

#152
20180167143
2018-06-14

Higher-level clock and data recovery (CDR) in passive optical networks (PONs)

#153
20180109324
2018-04-19

Driver module for mach zehnder modulator

#154
20180097568
2018-04-05

System and method for a differential pulse position modulation encoder and decoder

#155
20180091334
2018-03-29

Transmission device with pulse width modulation and transmission system

#156
20180091226
2018-03-29

Communication systems and methods

#157
20180069628
2018-03-08

Method of dimming for visible light communications

#158
20170366271
2017-12-21

Power management implementation in an optical link

#159
20170302485
2017-10-19

EXPURGATED PULSE POSITION MODULATION FOR COMMUNICATION

#160
20170295627
2017-10-12

Light emitting device with dimming visible light communication function and interaction device applying for visible light

#161
20170272164
2017-09-21

PULSE AMPLITUDE MODULATION (PAM) OVER MULTI-MODE LINK WITH RECEIVER SPATIAL FILTERING

#162
20170257173
2017-09-07

System and method for implementing adaptive pulse position modulation (APPM) for improved optical communications performance

#163
20170214469
2017-07-27

Driver module for mach zehnder modulator

#164
20170201328
2017-07-13

Method for optical and electrical signal processing of a multi-heterodyne signal generated by a multi-mode semi-conductor laser and detection device utilizing that method

#165
20170187480
2017-06-29

Synchronization of clocks and sensors via exponential-based TDR and communication of exponential-null pulse sequences

#166
20170187457
2017-06-29

Methods and devices for optical signal encoding and decoding

#167
20170187455
2017-06-29

Techniques for optical wireless communication

#168
20170180043
2017-06-22

Signal encoding and decoding method, device and system

#169
20170155452
2017-06-01

Optical modulators

#170
20170149511
2017-05-25

Optical communication system and optical transmission device

#171
20170134095
2017-05-11

Driver module for Mach Zehnder modulator

#172
20170078026
2017-03-16

Mitigating inter-symbol interference in coded light

#173
20170041069
2017-02-09

Apparatus and method for visible light communication

#174
20170019182
2017-01-19

Optical PAM modulation with dual drive mach zehnder modulators and low complexity electrical signaling

#175
20160352434
2016-12-01

Data transmission method

#176
20160315713
2016-10-27

Method and circuit to reduce power consumption of optical transmitter

#177
20160294470
2016-10-06

Apparatus configured for visible-light communications (VLC) using under-sampled frequency shift on-off keying (UFSOOK)

#178
20160269121
2016-09-15

Modulator Biasing For Optical Transmission

#179
20160226593
2016-08-04

Method and system for optical communication

#180
20160211921
2016-07-21

Method and system for a distributed optical transmitter with local domain splitting

#181
20160204867
2016-07-14

Power management implementation in an optical link

#182
20160164608
2016-06-09

Network security and variable pulse wave form with continuous communication

#183
20160156999
2016-06-02

Methods and systems for board level photonic bridges

#184
20160087747
2016-03-24

Dense wavelength division multiplexing and single-wavelength transmission systems

#185
20160085135
2016-03-24

Apparatus and method for single-channel digital optical phase conjugation

#186
20160080089
2016-03-17

Apparatus, system and method for wireless data transmission by using display backlight

#187
20160072582
2016-03-10

VISIBLE LIGHT COMMUNICATION DEVICE AND RECEIVING DEVICE

#188
20150280820
2015-10-01

TECHNIQUES FOR ADAPTIVE LIGHT MODULATION IN LIGHT-BASED COMMUNICATION

#189
20150263812
2015-09-17

Driving circuit for driving non-linear optical modulator by signal having plural logic levels

#190
20150162983
2015-06-11

APPARATUS FOR THE OPTICAL TRANSMISSION OF DIGITAL DATA

#191
20150155946
2015-06-04

Optical PAM modulation with dual drive mach zehnder modulators and low complexity electrical signaling

#192
20150104192
2015-04-16

Optical square QAM signal emulation using all-optical PAM to QAM signal conversion

#193
20150093122
2015-04-02

Encoding and decoding methods for high-precision time transfer and encoding and decoding devices therefor

#194
20140376418
2014-12-25

ENHANCED MODULATOR AND DEMODULATOR

#195
20140308048
2014-10-16

Methods and arrangements for frequency shift communications by undersampling

#196
20140233964
2014-08-21

Method for generating an optimized return-to-zero pulse shape against aggressive optical filtering and an optical transmitter implementing the method

#197
20140219663
2014-08-07

METHODS AND ARRANGEMENTS FOR FREQUENCY SHIFT COMMUNICATIONS

#198
20140161467
2014-06-12

Power management implementation in an optical link

#199
20130136119
2013-05-30

Method and apparatus for wireless transmission of data packets

#200
20120224862
2012-09-06

System, method, and apparatus for high-sensitivity optical detection

#201
20120224852
2012-09-06

System, method, and apparatus for high-sensitivity optical detection

#202
20120155867
2012-06-21

Power management implementation in an optical link

#203
20120045209
2012-02-23

Cost-effective multi-rate upstream for 10GEPON based on high efficiency coding

#204
20110076026
2011-03-31

Method for encoding and decoding of optical signals

#205
20100316391
2010-12-16

Optical interconnection arrangement for high speed, high density communication systems

#206
20100232807
2010-09-16

System and method for shaping a waveform

#207
20100040377
2010-02-18

Optical sensing module based on pulse width modulation signal and method thereof

#208
20080285983
2008-11-20

Modulation scheme for tedons

#209
20070223934
2007-09-27

System and method for shaping a waveform

#210
20070092265
2007-04-26

Multilevel pulse position modulation for efficient fiber optic communication

#211
20060222374
2006-10-05

Modulation scheme for tedons

#212
20050207761
2005-09-22

Driving method of optical modulator, and optical transmitter and optical transmission system using same

#213
20050063708
2005-03-24

System and method of using variable pulses for symbology

#214
18532565
2025-11-18

Methods and circuits for inner-eye timing center detection and clock phase alignment

#215
16947700
2021-12-28

Method and apparatus for communications within a toroidal optical slip ring

#216
16688809
2020-11-10

Demodulation-based mono-bit receiver for Nyquist zone disambiguation

#217
16547389
2020-07-21

Unequal spacing on multilevel signals

#218
16188899
2019-09-24

Method and system for a distributed optical transmitter with local domain splitting

#219
16159392
2019-11-26

Integrating wireless controller and a linear driver for LED control

#220
15827960
2019-02-12

PAM-4 transmitter precoder for 1+0.5D PR channels

#221
15675111
2019-01-08

Visual light communication using starburst or haze of the light source

#222
15388533
2018-03-20

Clock tracking algorithm for twinkle VPPM in optical camera communication systems

#223
14798322
2017-01-24

Driver module for mach zehnder modulator

#224
14502062
2017-10-03

Integrated unaligned resonant modulator tuning

#225
14297254
2017-07-11

Method and system for optical communication

#226
14182082
2014-10-21

Communication using analog pulses having exponentially-shaped leading edges

#227
13833415
2015-03-17

Optical PAM modulation with dual drive mach zehnder modulators and low complexity electrical signaling

#228
13437502
2015-09-08

Polarization-switched differential ternary phase-shift keying