Patents
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)
07/1992
07/30/1992CA2060115A1 Optoelectronic satellite centre
07/30/1992CA2060112A1 Optoelectronic concentrator
07/29/1992EP0496676A1 Method and device for positioning frequencies, especially optical ones
07/29/1992EP0496675A1 Procedure and communication network on optical fibres with frequency division multiplex
07/29/1992EP0496674A1 Procedure and communication network with frequency assignment
07/29/1992EP0496673A1 Procedure and message transmission network in frequency channels
07/29/1992EP0496603A1 Sensitized erbium fiber optical amplifier
07/29/1992EP0496331A2 Mold die for manufacturing optical module and manufacturing method using the same
07/29/1992EP0496298A2 Quadrature optical phase modulators for lightwave systems
07/29/1992EP0495855A1 Optical receiver.
07/29/1992CN1063172A Optical backplane interconnecting circuit boards
07/28/1992US5134671 Monolithic integrated optical amplifier and photodetector
07/28/1992US5134639 Optical communication link
07/28/1992US5134624 Method and apparatus for stabilizing oscillation frequency separation among a plurality of laser devices
07/28/1992US5134517 Erbium-doped fiber optical amplifier
07/28/1992US5134509 Coherent subcarrier multiplexed optical communication system
07/28/1992US5134508 Optical high-speed parallel backplane
07/28/1992CA1305790C System for preventing crosstalk in a multi-input electronic device
07/25/1992CA2060097A1 Process and device for the relative positioning of a frequency, particularly a light wave frequency
07/25/1992CA2059970A1 Process and network for transmitting messages over frequency channels
07/25/1992CA2059907A1 Frequency allocation communication process and network
07/24/1992CA2059835A1 Quadrature optical phase modulators for lightwave systems
07/24/1992CA2059480A1 Mold die for manufacturing optical module and manufacturing method using the same
07/23/1992WO1992012580A1 Switched diversity for optical communications
07/23/1992WO1992012555A1 Delay distortion compensating circuit for optical transmission system
07/23/1992DE4101191A1 Opto-coupler circuit with switch-on time - has phototransistor operating as constant current source by limitation of capacitance using nonlinear devices
07/22/1992EP0495559A1 Hybrid laser for optical communications
07/22/1992EP0495509A2 Feeding system and feeding method for a submarine cable communication system
07/22/1992EP0495413A1 Light detecting apparatus having a diffraction grating
07/22/1992EP0353292B1 Current summed optoelectronic crossbar switch
07/22/1992EP0333751B1 Avalanche photodiode quenching circuit
07/22/1992EP0314724B1 Control of optical systems
07/21/1992US5133031 Optical shunt device
07/21/1992US5132829 Tone spacing and power level monitor for fsk lightwave systems
07/21/1992US5132828 Analog video fiber optic link
07/21/1992US5132827 Optical fibre communication link for connecting a peripheral device to a computer system
07/21/1992US5132824 Liquid-crystal modulator array
07/21/1992US5132639 Predistorter for linearization of electronic and optical signals
07/21/1992CA1305523C Methods and devices for altering optical polarisation
07/15/1992EP0494831A2 Optical processing device with wavelength stabilization and optical switch using such a device
07/15/1992EP0494514A2 Articles and systems comprising optically communicating logic elements
07/15/1992CN2110321U Infrared frequency modulation wireless earphone
07/14/1992US5131061 Modular active fiber optic coupler system
07/14/1992US5130980 Data communication system with protection of error propagation
07/14/1992US5130837 Optical repeater haivng means for preventing malfunction due to the presence of noise
07/14/1992US5130836 Optical transceiver
07/09/1992WO1992011711A1 Optoelectric emitting and receiving device
07/09/1992WO1992011710A1 Optical communications system
07/09/1992WO1992011709A1 Optical communication monitoring and control
07/09/1992WO1992011562A1 Optical mixing device
07/09/1992WO1992011555A1 Optical device
07/08/1992EP0493986A2 Digital transmitting and receiving apparatus for cordless headphones
07/08/1992EP0493884A1 Data transmission system
07/08/1992EP0493817A2 Optical modulator for cancellation of second-order intermodulation products in lightwave systems
07/08/1992EP0493816A2 Single sideband optical modulator for lightwave systems
07/08/1992EP0469004A4 Data transmission system
07/07/1992US5128935 Byte-wide repeat filter
07/07/1992US5128800 Gain switchable optical fiber amplifier
07/07/1992US5128792 Self-synchronizing infra-red communication system
07/07/1992US5128789 Node for grid type single mode fiber optic local area network
07/07/1992US5128668 Remote-controlled electronic equipment with a transmitting function
07/07/1992CA1304784C Optical communication apparatus for motor vehicle
07/07/1992CA1304783C Apparatus for bidirectional transmission of optical signals
07/02/1992DE4041278A1 Optoelektrische sende- und empfangsvorrichtung Optoelectrical transmitting and receiving device
07/01/1992EP0492852A2 Optical packet switch
07/01/1992EP0492650A2 Device for aligning planes of polarization
07/01/1992EP0491868A1 Error detection for fiber distributed interfaced optic link.
07/01/1992EP0491822A1 An optical detector.
07/01/1992EP0465604A4 Infrared network entry permission method and apparatus
07/01/1992CA2058638A1 Single sideband optical modulator for lightwave systems
07/01/1992CA2058580A1 Optical modulator for cancellation of second-order intermodulation products in lightwave systems
06/1992
06/30/1992US5127067 Local area network with star topology and ring protocol
06/30/1992US5127066 Coherent optical-fiber communication system using polarization diversity transmission
06/30/1992US5126871 Method and apparatus for redundant communication of optical signals with distortion cancellation
06/30/1992US5126870 Linear broadband signal generator using primary and secondary optical modulators
06/30/1992US5126869 Two-dimensional, phased-array optical beam steerer
06/30/1992US5126557 Device for optical heterodyne detection and optical component suitable for use in such a device
06/25/1992DE4041203A1 Detection and storing circuitry for extreme min. or max. value of input voltage - has transistor conducting if input voltage falls below storage capacitor voltage but blocking if its exceeds
06/24/1992EP0491421A2 Coherent optical multichannel receiver
06/24/1992EP0491378A2 A power feeding system for an optical transmission system
06/24/1992EP0491272A2 Optical transmitter
06/24/1992EP0491228A2 Bidirectional optical data transmission system
06/24/1992EP0491209A2 Signal processing for optical transmission system
06/24/1992EP0491095A1 Single wire, infrared randomly reflected, automotive multiplexing system
06/23/1992US5125066 Fiber optical amplifier
06/23/1992US5125050 Vertical metallically loaded polarization splitter and polarization-diversified optical receiver
06/23/1992US5125049 Multipurpose component with integrated optics and distribution network with optical amplification
06/23/1992US5124828 Device for heterodyne detection of an optical signal and for reducing noise in the signal using polarization control elements
06/23/1992US5123732 Optical time domain reflectometer and current voltage converter for use therein
06/17/1992EP0490439A1 Transmission system for the polarisation-insensitive transmission of signals
06/17/1992EP0490054A1 Improvements in or relating to rotatable joints for communication lines
06/17/1992EP0489927A1 Light-receiving circuit
06/17/1992EP0489787A1 Coupler verification test circuit
06/17/1992EP0304462B1 Apparatus for optical wavelength division multiplexing
06/16/1992US5123066 Molded optical package utilizing leadframe technology
06/16/1992US5122893 Bi-directional optical transceiver
06/16/1992CA1303395C Data rate limiter for optical transmission system
06/13/1992CA2056866A1 Data transmission system
06/12/1992WO1992010887A1 Optical communications system
06/11/1992DE4038914A1 Analogue optical transmission system for television signal - divides electrical spectrum into several channels, converts to optical signals using respective transmitters and recombines using optical coupler