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)
08/1994
08/31/1994EP0613320A2 Wireless headphones
08/31/1994EP0613315A2 Device and procedure for line data transmission
08/31/1994EP0613263A1 Optical network comprising a compact wavelength-dividing component
08/31/1994EP0613262A1 Optical noise source
08/31/1994EP0613261A1 AC coupled fiber optic receiver with DC coupled characteristics
08/31/1994EP0613255A1 Microwave generator using optical injection locking
08/31/1994EP0613223A1 Semiconductor laser and method of modulation
08/31/1994EP0613182A2 High power capacity optical receiver apparatus and method employing distributed photodetectors
08/31/1994EP0612452A1 Apparatus for linearization of optic modulators using a feed-forward predistortion circuit
08/31/1994EP0612451A1 System for generating feedback signals for regulating optical surveillance circuits (pll)
08/31/1994EP0420901B1 Procedure and apparatus for the control of electric power
08/30/1994US5343545 Interconnectable multi-terminal star coupler
08/30/1994US5343542 Tapered fabry-perot waveguide optical demultiplexer
08/30/1994US5343323 Lan electro-optical interface
08/30/1994US5343322 System of very-long-distance digital transmission by optical fiber with compensation for distortions at reception
08/30/1994US5343320 Pump laser control circuit for an optical transmission system
08/30/1994US5343319 Apparatus for adapting an electrical communications port to an optical communications port
08/30/1994US5343315 Interactive optical transmission system
08/25/1994DE4343456A1 Arrangement and method for line-based digital communications
08/25/1994DE4325323C1 Contactless optical data transmission
08/25/1994CA2115904A1 Differential boxcar integrator with auto-zero function
08/24/1994EP0612193A2 Optical local area network and optical subscriber switch
08/24/1994EP0612172A1 Opto-electronic satellite centre for connecting optical subscriber-lines to an ATM network
08/24/1994EP0612129A1 A polarization insensitive semiconductor optical amplifier and an optical communication system using the same
08/24/1994EP0611918A1 Hand lamp with signal emitting elements of a remote control device
08/24/1994EP0611504A1 Sagnac interferometer based secured communication system
08/24/1994EP0611493A1 Method and apparatus to compensate for distortion in optical transmission systems
08/24/1994CA2090766A1 Infrared signal transmitter
08/23/1994US5341365 Passive optical network
08/23/1994US5341232 Star-shaped network for data communication between stations
08/23/1994US5341166 System for controlling selected devices having unique sets of control codes
08/23/1994US5341086 Constant-current circuit for light-emitting element
08/23/1994CA2057928C Optical signal distribution network
08/23/1994CA2045797C Wavelength-time-space division switching system
08/21/1994CA2115486A1 Microwave generator and use thereof
08/19/1994CA2115880A1 Photo-electronic technology satellite centre for connecting optical subscriber lines to an asynchronous transfer mode telecommunications network
08/18/1994DE4304674A1 Ansteuerung der Leistungstransistor-Module in Flurförderzeugen Control of the power transistor modules in industrial trucks
08/17/1994EP0611097A1 Compact laser optical source
08/17/1994EP0610676A2 Optical fiber coupling device and optoelectronic system utilizing same
08/17/1994EP0610665A1 Pixel control circuitry for spatial light modulator
08/17/1994EP0610486A1 System integrating a plurality of electrical items and connector block for use with such a system
08/17/1994CN2174817Y Modularized end machine
08/16/1994US5339370 Optical modulator and optical communication system utilizing the same
08/16/1994US5339187 Wide dynamic range high frequency signal transmission utilizing a logarithmic amplifier
08/16/1994US5339185 Optical timing extraction circuit
08/16/1994US5339184 Fiber optic antenna remoting for multi-sector cell sites
08/16/1994US5339183 Optical signal transmission device
08/16/1994US5339182 Method and apparatus for quantum communication employing nonclassical correlations of quadrature-phase amplitudes
08/16/1994US5338925 Apparatus for simultaneously detecting a plurality of discrete laser modulation frequencies having circuitry for background radiation canceling
08/16/1994CA2042697C Fiber optic amplifier
08/14/1994CA2115487A1 Optical local telecommunication network and optical subscriber exchange
08/10/1994EP0609821A1 Remote control signal receiver
08/10/1994CN1025646C Optical fibre telecommunications line with separate service channels
08/09/1994US5337378 Optical fiber switch including partitions for restricting surplus fibers
08/09/1994US5337375 Depolarizer using unpumped, doped optical fiber and method using same
08/09/1994US5337176 Optical amplifier with improved linearity
08/09/1994US5337175 Optical communications system for the subscriber area with optical amplifiers
08/04/1994WO1994017608A1 Optical rotary control device
08/04/1994WO1994017430A1 A method of setting an electro-optical signal path and an apparatus for carrying out the method
08/04/1994WO1994014209A3 Optical self-heterodyne remote antenna system
08/03/1994EP0609177A1 Method and apparatus for the bidirectional transmission of information (full duplex)
08/03/1994EP0609129A1 System and method of soliton transmission
08/03/1994EP0608611A1 Optical soliton pulse transmission system
08/02/1994US5335361 Integrated circuit module with devices interconnected by electromagnetic waves
08/02/1994US5335109 Optical receiver with extended dynamic range
08/02/1994US5335107 Method and apparatus for modulation of self-pulsating diode laser's self-pulsating frequency
08/02/1994US5335106 Optically-based frequency synthesizer for generating an electric output signal at a preselected frequency that can be changed over a wide band of frequencies for communication purpose
08/02/1994US5335104 Method of detecting breaks in multi-drop feeder systems
08/02/1994US5334879 Feeding system and feeding method for a submarine cable communication system
08/02/1994US5334854 Optical semiconductor device with wavelength selectivity and method for amplifying or emitting the light using the same
07/1994
07/30/1994CA2114604A1 Optical signal transmission network
07/29/1994CA2114369A1 Soliton telecommunication system and process
07/28/1994DE4318857C1 Driver stage for optical transmitter delivering constant current
07/27/1994EP0608165A1 Semi-conductor optical pulse source using gain switching and a soliton transmission system
07/27/1994EP0607906A1 Alignment adjusting system for use in optical system of optical transceiver
07/27/1994EP0607868A1 Optical transmitter and communication system
07/27/1994EP0607849A1 Fiber optic link amplitude stabilisation circuit
07/27/1994EP0607782A1 Optical dispersion compensator
07/27/1994CN2172933Y Infrared frequency-modulated wireless earphone
07/26/1994USRE34676 Fiber optic digital data transmitting system
07/26/1994US5333089 Optical communications system employing fiber-optic amplifiers and control of the transmitter wavelength
07/26/1994US5333088 Data transmission system
07/26/1994US5332894 Optical output control IC and optical input amplifier IC
07/26/1994CA2056642C Gain stabilized fiber amplifier
07/26/1994CA2009430C Monitoring and/or control of optical amplifiers
07/26/1994CA1331047C Node for a fast packet-switching network in optical-electrical technology
07/21/1994WO1994016347A1 Electrically switched, remote optical time domain reflectometry system and fiber analysis method
07/20/1994EP0606330A1 Network with line monitoring system
07/19/1994US5331453 Millimeter wave fiber-optically linked antenna receiver device
07/19/1994US5331452 Optical detector
07/19/1994US5331449 Optical fiber tree and branch network for AM signal distribution
07/19/1994US5331319 Device for signalling the position of a mobile member
07/17/1994CA2113058A1 Optical microwave generator
07/13/1994EP0606170A2 Optical transmission system and optical network terminals used therein
07/13/1994EP0606161A2 Circuit for converting unipolar input to bipolar output
07/13/1994CN1089414A 光信号传输网络 An optical signal transmission network
07/12/1994US5329604 Optical fiber coupling device and optoelectronic system utilizing same
07/12/1994US5329396 Reduction of stimulated brillouin scattering in a fiber optic transmission system
07/12/1994US5329395 Optical atmospheric communication system
07/12/1994US5329394 Frequency modulation coherent optical communications system with continuous polarization scrambling