Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › 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)
11/1983
11/01/1983US4412720 Optical system coupling a rectangular light source to a circular light receiver
10/1983
10/26/1983EP0092129A2 Optical connectors
10/25/1983US4412355 Push-button operated electrical power source for an optical communication link
10/25/1983US4412218 Remote control signal transmitter capable of setting custom codes individually alloted to a plurality of controlled instruments
10/19/1983EP0091619A2 Remote control device
10/19/1983EP0091562A2 Data transmission system
10/19/1983EP0091546A2 Method and device for the optical transmission of electrical signals with positive and negative voltage values
10/18/1983US4410878 Digital signal transmission
10/13/1983WO1983003506A1 An optical switch and a time division optical demultiplexer using such switch
10/13/1983WO1983003492A1 Fiber optic acoustic transducer intrusion detection system
10/13/1983WO1983003442A1 Optical telecontrol device for apartment doors
10/12/1983EP0091271A2 Data transmission apparatus
10/12/1983EP0091115A1 Construction machine
10/12/1983EP0090825A1 Data communication system
10/11/1983US4408831 Optical switch
10/05/1983EP0090322A1 Optical remote control device for a house door
10/04/1983US4408354 Signal transmission systems
10/04/1983US4408353 Coaxial cable/fiber optic bus network
10/04/1983US4408307 Optical transmission of digital seismic data
10/04/1983CA1154841A1 Digital signal transmission method and apparatus
10/04/1983CA1154829A1 Modular fibre-optic bus system
09/1983
09/29/1983WO1983003327A1 Bidirectional dual network
09/28/1983EP0089758A2 Optical fibre attenuators
09/28/1983EP0089641A1 Remote control receiver, especially for the control of electrical devices
09/28/1983EP0089467A1 Method and system for pulse signal transmission
09/27/1983US4406516 Monomode fiberguide telecommunication system utilizing soliton pulses
09/27/1983US4406513 Optical repeater system having an automatic optical by-pass
09/21/1983EP0088953A1 Automotive vehicle electric connecting device
09/21/1983EP0088830A1 Infrared telecommand receiver
09/20/1983US4406003 Optical transmission system
09/20/1983CA1154137A1 Coupling device for coupling signals into or out of a transmission glass-fibre
09/14/1983EP0088721A1 Method of detecting the interruption of the transmission of light signals, and apparatus therefor
09/13/1983US4404559 Rotative power and signal coupling
09/06/1983US4403159 Circuit for evaluating signals
09/06/1983US4403139 Redundant light source circuit
08/1983
08/30/1983US4402090 Communication system in which data are transferred between terminal stations and satellite stations by infrared signals
08/30/1983US4401364 Optical repeater system for optical communication
08/30/1983US4401363 Optical waveguide and method of propagating waves therein
08/24/1983EP0086528A1 A bias control circuit for light-emitting diode having temperature compensation
08/17/1983EP0085849A2 Method for reducing the level dynamic variation in an optical transmission system
08/16/1983US4399566 Device for stabilizing the output power of a transmitter module in an optical fiber transmission system
08/16/1983US4399565 Device for triggering an alarm system in the event of insufficiency of the transmission level, for the receiver module of an optical-fiber transmission system
08/16/1983US4399564 Fiber optic system for transmission of video signals by pulse-frequency-modulation
08/16/1983US4399563 Fiber optics high speed modem
08/10/1983EP0085633A1 Optoelectronic switching network
08/09/1983US4397551 Method and apparatus for optical fiber fault location
08/09/1983CA1151760A1 Optical transducer array system
08/09/1983CA1151733A1 Injection laser diode digital transmitter having signal quality monitoring arrangement
08/03/1983EP0084958A2 Apparatus for controlling the position or movement of a member
08/03/1983EP0084625A2 Fibre-optic transmission system
08/02/1983US4397042 Optical modulation/demodulation system
08/02/1983US4397016 Process for switching time-multiplexed signals transmitted on a carrier, including in particular an optical carrier, and a device embodying this process
08/02/1983CA1151243A1 Optical telephone device
07/1983
07/27/1983EP0084371A2 Carrier frequency system for four-wire operation
07/26/1983US4395166 Fluidization and distribution
07/26/1983US4395090 Optical cut-off filter
07/26/1983CA1150792A1 Method and apparatus for signal transmission
07/26/1983CA1150541A1 Optical system with high coupling efficiency, in particular for attenuation measurement apparatuses employing the back-scattering technique
07/19/1983US4394780 Balloon collector/director sunsubsatcom concept
07/12/1983US4393518 Optical communication arrangement
07/12/1983US4393517 Pulse code modulation of laser pulse tail
07/12/1983US4393516 Data transmission system and method
07/12/1983US4393515 Processor arrangement
07/12/1983US4393501 Line protocol for communication system
07/12/1983US4393279 Digital data transmission system having frequency or phase modulated data carrying signals to provide supervisory channel
07/06/1983EP0082905A1 Circuit for the processing, transmission and acoustic reproduction of digitalized tone frequency signals
07/05/1983CA1149499A1 Optical circulator
06/1983
06/29/1983EP0082604A1 Fibre optic hydrophone transducers
06/28/1983US4390974 Seismic data telemetric system
06/28/1983CA1149021A1 Control circuit for the drive current of a laser
06/22/1983EP0082037A1 Digital system with optical information transmission
06/21/1983US4389645 Well logging fiber optic communication system
06/15/1983EP0081335A1 Access control for communication networks
06/15/1983EP0081296A1 Tapped optical fiber delay line
06/14/1983US4388732 Fiber optic data link
06/14/1983US4388730 Noise detector and data signal receiver for a frequency modulation system
06/14/1983US4387953 Optical waveguide device with phase matching layers
06/08/1983EP0080829A2 Optical communication system
06/08/1983EP0080509A1 Signal booster for digital data transmision through transmission lines
06/07/1983US4387441 Data processing system wherein at least one subsystem has a local memory and a mailbox memory within the local memory for storing header information
06/07/1983CA1147815A1 Ir remote control system
06/01/1983EP0080343A1 Optical bypass switch
06/01/1983EP0080318A1 Optical appparatus for interrogation of the status of a switch
05/1983
05/31/1983US4385832 Laser power transmitting optical fiber damage detecting device
05/31/1983CA1147403A1 Laser digital transmitter
05/26/1983WO1983001873A1 Telemetry system with signal booster for digital data transmission through a transmission line
05/24/1983USRE31255 Light emitting and light detecting semiconductor device for interfacing with an optical fiber
05/24/1983US4385387 Preconduction current control of laser diodes
05/24/1983US4384760 Polarization transformer
05/24/1983CA1147072A1 Electrical communications system
05/18/1983EP0078843A1 Information distribution system.
05/17/1983US4383730 Optical four-gate coupler
05/17/1983CA1146389A1 Light coupling and branching device using light focusing transmission body
05/04/1983EP0077915A2 Evanescent-wave coupling device
05/03/1983US4381882 Fibre optic termination
04/1983
04/26/1983CA1145417A1 Active t-coupler for fiber optic local networks which permits collision detection
04/20/1983EP0077292A1 Communication network using monomode fibres as transmission means of optical channels multiplexed in lightcarrier frequency domain
04/20/1983EP0077232A1 Optical fibre remote transmission system
04/20/1983EP0076844A1 Data processing system having dual-channel system bus.
04/19/1983CA1145075A1 Optical signal transmission apparatus
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