H04B 10 - Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication

Patents for H04B 10 - Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication (73,125)
12/1993
12/02/1993	DE4217899A1 System optimisation of fibre=optic transmission lines - varying optical transmission power until comparison confirms that system requirement is satisfied in both directions
12/02/1993	DE4217821A1 Multistage optical coupling network with frequency-dependent stage - is based on switch matrix which forwards multifrequency signal combinations for demultiplexing to several more receivers
12/02/1993	DE4217574A1 Frequency and phase control loop synchronisation method - using auxiliary signal with low intensity and orthogonal polarisation w.r.t. main transmission signal during new synchronisation phase
12/02/1993	DE4217297A1 Wide band communication system optical network current supply - supplies electric energy for opto-electric conversion and to devices at subscriber end individually from subscriber
12/02/1993	DE4216817A1 Optical coupling circuit for video signal transmission lines - extracts DC level of floor of sync. pulse for integration over several samples in order to adjust feedback clamp
12/01/1993	EP0571747A2 Circuit arrangement for an optical receiver
12/01/1993	EP0571609A1 Integrated circuit module with devices interconnected by electromagnetic waves
12/01/1993	EP0571382A1 Optical process variable transmitter
12/01/1993	EP0571366A1 System for transmitting data between several subscriber stations in a local communications net
12/01/1993	CN1079076A Vertical-cavity surface emitting laser optical interconnecttechnology
11/1993
11/30/1993	US5267323 Voice-operated remote control system
11/30/1993	US5267074 Coherent optical heterodyne transmission system
11/30/1993	US5267073 Amplifier adapter for optical lines
11/30/1993	US5267072 Dual frequency optical carrier technique for transmission of reference frequencies in dispersive media
11/30/1993	US5267071 Signal level control circuitry for a fiber communications system
11/30/1993	US5267069 Fiber optic data link system
11/30/1993	US5267068 Signal transmission performance evaluation device in an optical communication apparatus
11/30/1993	US5266794 Vertical-cavity surface emitting laser optical interconnect technology
11/30/1993	CA2002432C Bidirectional optical transmission system having a light-interruption detecting function
11/25/1993	WO1993023840A1 Pointing device having improved automatic gain control and information reporting
11/25/1993	DE4232481A1 Cordless communication arrangement with mobile end devices - has both first transmitter receiver apparatus and mobile end devices having cordless telephone standard procedure realising components
11/25/1993	DE4216922A1 Reflected energy attenuator for optical communication system - is based on ion implantation of section of fibre between two standard monomode sections with less attenuation
11/25/1993	DE4216790A1 Digital optical signal transmission system
11/25/1993	CA2136191A1 Pointing device having improved automatic gain control and information reporting
11/24/1993	EP0571134A1 Optical regenerator circuit
11/24/1993	EP0571132A1 Optical tunable receiver
11/24/1993	EP0570984A1 Suppression of noise and distortion in fiber-optic systems
11/24/1993	EP0570723A1 Fiber-optic cable dispersion compensation at nodes between end points
11/24/1993	EP0570572A1 High speed electro-optical signal translator
11/23/1993	US5265112 Optical comb generator
11/23/1993	US5265111 Positive feedback device for processing an optical signal
11/23/1993	US5265103 Data communications system
11/23/1993	US5264960 Optical wavelength shifter
11/23/1993	US5264955 Optical space communication apparatus
11/23/1993	CA2096795A1 Suppression of noise and distortion in fiber-optic systems
11/23/1993	CA1324690C Optical fiber bus controller
11/23/1993	CA1324689C Method and apparatus for transmitting information
11/18/1993	EP0570151A2 Optical transmitter with the signal light of reduced degree of polarization and optical depolarizing circuit
11/18/1993	EP0569769A1 Optical telecommunications system with monitoring device for avoiding strong pulses
11/18/1993	EP0569602A1 Signal receiver and signal reception method
11/18/1993	EP0357701B1 Electro-optical data handling system with noise immunity
11/17/1993	CN1078586A Digital optical communication system comprising an optical wavegulde with dispersion at the operating wavelength
11/16/1993	US5263109 Optical transmission paths and methods of measuring their optical transmission times
11/16/1993	US5263108 Electrical circuit apparatus
11/16/1993	US5262885 Control circuit and data transmission device provided with such a circuit
11/16/1993	US5262884 Optical microphone with vibrating optical element
11/16/1993	US5262883 CATV distribution networks using light wave transmission lines
11/16/1993	US5262656 Optical semiconductor transceiver with chemically resistant layers
11/11/1993	WO1993022855A1 Optical clock recovery
11/11/1993	WO1993022805A1 Device for generating optical signals
11/11/1993	WO1993022647A1 Method for identifying optical line
11/10/1993	EP0569225A2 Picture image distributing apparatus provided within passenger moving vehicle
11/10/1993	EP0569187A1 Microdynamic fiber-optic switch
11/10/1993	EP0447439B1 Loss detection
11/10/1993	CA2094867A1 Optical communication system with monitoring device for avoiding giant pulses
11/09/1993	US5261016 Chromatic dispersion compensated optical fiber communication system
11/09/1993	US5260823 Erbium-doped fibre amplifier with shaped spectral gain
11/09/1993	US5260819 Digital telemetry system and method for fault detection in optical transmission system
11/09/1993	CA2005399C Double-stage phase-diversity receiver
11/09/1993	CA1324204C Communication system
11/04/1993	DE4214375A1 Optical subscriber network with multiplexer and demultiplexer - arranges optical carriers in groups according to frequency range and uses different carriers for incoming and outgoing channels
11/03/1993	EP0568449A1 Optoelectronic converter for optical terminal equipment and its application in various types of optical links
11/03/1993	EP0568447A1 Drop insertion multiplexer
11/03/1993	EP0567693A1 Optical clock recovery
11/03/1993	EP0500804A4 Self-synchronizing infra-red communication system
11/02/1993	US5259048 Optical equalizer
11/02/1993	US5259045 Optical modulation method operable in an optical transmission path and an optical modulator using the optical modulation method
11/02/1993	US5258868 Optical process variable transmitter
11/02/1993	US5258867 Base station performance enhancements for infrared-linked telephone and communications systems
10/1993
10/27/1993	EP0567384A1 Interactive optical transmission system
10/27/1993	EP0567312A2 Light pulse intensity regenerator, light transforming repeater, preamplifier for light signal, light intensity change measuring apparatus and stabilized light source
10/27/1993	EP0567181A1 Optical signal transmission with polarisation-insensitive coherent detection and frequency stabilisation at the receiving end
10/27/1993	EP0567143A1 Optical matrix switch
10/27/1993	EP0567081A2 Optical parallel transmission device
10/27/1993	CN1077829A Preamplifier for super-dynamic-range optical receiver
10/26/1993	US5257285 Transimpedance pre-amplifier and a receiver including the pre-amplifier
10/26/1993	US5257126 Coherent optical fiber communications system using polarization modulation
10/26/1993	US5257124 Low distortion laser system for AM fiber optic communication
10/26/1993	US5256869 Free-space optical interconnection using deformable mirror device
10/26/1993	CA1323657C Optical homodyne dpsk receiver with optical amplifier
10/21/1993	DE4212934A1 Optical signal receiver circuit - has collector emitter of bipolar transistor connected in parallel with trans-impedance amplifier coupling resistance
10/21/1993	DE4212772A1 Wide-band pre-distortion circuit - compensates for second order distortion in analogue CATV laser diodes over wide frequency range
10/20/1993	EP0566464A1 Optical pulse source and optical soliton transmission system with such a source
10/20/1993	EP0566389A1 Optical amplification repeating transmission system
10/20/1993	EP0566352A1 Optical atmospheric link system
10/20/1993	EP0565993A1 Optical data transmission system with a power limiter for high energy pulses
10/20/1993	EP0565739A1 Procedure for the allocation of timeslots in a passive optical network
10/20/1993	CN1022531C Optical fiber telecommunication line comprising amplifiers of transmitted signals and amplifiers for said line
10/19/1993	US5255313 Universal remote control system
10/19/1993	US5255276 Driver circuit of a tunable laser diode
10/19/1993	US5255111 Full-duplex optical transmission system
10/19/1993	US5254851 Wide-dynamic range light receiver
10/19/1993	US5253935 Couples for terminating optical fiber ends
10/19/1993	CA1323407C Optical signal recovery
10/14/1993	WO1993020475A1 Improvements to optical phase shifting
10/14/1993	CA2133556A1 Improvements to optical phase shifting
10/14/1993	CA2093724A1 Optical communication system with a power limiter for high-energy pulses
10/13/1993	EP0565306A1 Modulator-based lightwave transmitter
10/13/1993	EP0565035A2 Optical modulator optical transmitter apparatus and optical transmission system
10/12/1993	US5253309 Optical distribution of analog and digital signals using optical modulators with complementary outputs

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