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)
10/1985
10/22/1985US4549313 Supervisory device for an optoelectronic switching network
10/22/1985US4549085 Electro-optical signal processing systems and devices
10/16/1985EP0158431A1 Local area network
10/16/1985EP0158264A2 Light signal transmission apparatus
10/15/1985US4547774 Optical communication system for drill hole logging
10/14/1985EP0151130A4 Active optical fiber tap.
10/10/1985WO1985004537A1 An led driver circuit
10/09/1985EP0157485A2 Electronic apparatus with circuit cards and signals optically coupled there between
10/08/1985US4546466 Optical encoder using time domain and wavelength multiplexing
10/08/1985US4545253 Data gathering system
10/08/1985CA1194972A1 Acousto-optical channelized processor
10/08/1985CA1194959A1 Bidirectional dual network
10/08/1985CA1194937A1 Bias control circuit for light-emitting diode having temperature compensation
10/02/1985EP0156693A1 Protective device against electrical perturbations between a terminal and a telephone line
10/02/1985EP0156124A2 Apparatus for the transmission of light signals between two components
10/02/1985EP0072840B1 Method for the multiplexing of transmission channels in a step-index optical fiber and implementing device
10/01/1985US4545076 Data transmission link
10/01/1985US4545074 Fiber optic loop system with bypass mode
10/01/1985US4545048 Service integrated digital transmission system
09/1985
09/25/1985EP0155866A1 Fibre-optical opto-electronic coupler with adjustable tapping, and a bidirectional information transmission system using such a coupler
09/25/1985EP0155644A2 Opto-electric arrangement for information technology
09/25/1985EP0063126B1 Optical transmission systems
09/24/1985US4543666 Optical coupler network for coupling a plurality of subscriber transmitters to a plurality of subscriber receivers by means of optical star couplers
09/24/1985US4543664 Direct current coupled data transmission
09/24/1985US4543663 Communications exchange
09/24/1985US4543574 System for resolving collision in local network
09/17/1985US4542536 Device and method for reducing level dynamics in an optical transmission system
09/12/1985WO1985004064A1 Increased bit rate optical data stream
09/10/1985US4541044 Loop transmission with back-up power supply for the interface
09/10/1985US4540952 Nonintegrating receiver
09/10/1985US4540950 Wideband linear amplifier
09/10/1985US4540243 Method and apparatus for converting phase-modulated light to amplitude-modulated light and communication method and apparatus employing the same
09/04/1985EP0153722A2 Hybrid optical wavelength division multiplexer-demultiplexer
09/03/1985US4539686 Laser driving means
08/1985
08/29/1985WO1985003770A1 Method and apparatus for detecting the collision of data packets
08/28/1985EP0152991A2 Integrated optical wavelength multiplexing/demultiplexing device for a monomode communication system, and its application
08/28/1985EP0152597A2 Apparatus for emitting and receiving light signals, more particularly infrared signals
08/28/1985EP0152423A1 Maintenance response signalling arrangement for a digital transmission system.
08/28/1985EP0152407A1 Communication network.
08/27/1985US4538140 Fiber optic acoustic transducer intrusion detection system
08/27/1985CA1192646A1 Piezoelectric apparatus for positioning optical fibers
08/21/1985EP0152151A1 Broadband control amplifier
08/21/1985EP0151616A1 Control signalling arrangement for a digital transmission system.
08/20/1985CA1192313A1 Pulse signal transmission system
08/20/1985CA1192260A1 Distribution system for a local area network
08/14/1985EP0151454A2 Broadband integrated subscriber access system
08/14/1985EP0151188A1 Method for directly transmitting images
08/14/1985EP0151130A1 Active optical fiber tap
08/13/1985USRE31969 Laser control circuit
08/13/1985US4534614 Aspherical lens for concentrating diffuse optical radiation
08/13/1985CA1191919A1 Communications network access rights arbitration
08/07/1985EP0150929A2 Substrate with optical communications systems between chips mounted thereon
08/06/1985US4534064 Fault location arrangement for digital optical transmission system
08/06/1985US4534033 Three terminal semiconductor laser
08/06/1985US4533833 Optically coupled integrated circuit array
08/06/1985US4533247 Optical transmission system
08/06/1985US4533207 Wavelength tunable TE to TM mode converter
07/1985
07/30/1985US4532632 Tunable semiconductor laser
07/24/1985EP0149495A2 Signal transmission system
07/24/1985EP0149286A1 Communication system and method
07/24/1985EP0149280A1 Arrangement for transmitting data between two parts rotatable with respect to one another
07/23/1985US4531240 Data communication system
07/23/1985US4531239 Optical receiver having collision detection function
07/23/1985US4531238 Statistical contention control for star configured communication networks
07/23/1985US4531222 Clock extraction circuit for a PCM signal
07/23/1985US4531193 For measuring physical quantity/providing correspondence measurement data
07/23/1985US4530567 Rotary optical connector
07/18/1985WO1985003179A1 Circuit with optical bus
07/17/1985EP0148266A1 Wavelength division multiplexing optical communications systems.
07/17/1985EP0148262A1 Data processing system including a data transmission bus
07/16/1985US4530084 Communications network with optical channels
07/16/1985US4529986 Optical connection system for the bidirectional exchange of data between a central unit and peripheral units and an electronic sweep antenna comprising such a system
07/16/1985US4529949 Bias control circuit for light-emitting diode having temperature compensation
07/16/1985US4529947 Apparatus for input amplifier stage
07/16/1985CA1190675A1 Wide-band communications system
07/10/1985EP0148049A1 Optical transmission channel with electrical connectors
07/09/1985US4528695 Distribution system for a local fibre network
07/09/1985CA1190334A1 Duplex communication on a single optical fiber
07/09/1985CA1190298A1 Method for resolving collision in local network
07/02/1985US4527286 Repeater for fiber optic bus distribution system
07/01/1985EP0105319A4 An optical switch and a time division optical demultiplexer using such switch.
07/01/1985EP0072857A4 Data communication system.
06/1985
06/26/1985EP0145972A1 Coherent optical communication system with FSK heterodyne or homodyne detection and little influence by distortion of a modulated optical signal
06/26/1985EP0124523A4 Fiber optic switch and discretely variable delay line.
06/25/1985US4525874 Device for transmitting measured values to a remote location
06/25/1985US4525873 Device for transmitting measured values to a remote location
06/25/1985US4525834 Service integrated digital transmission system
06/20/1985WO1985002733A1 Fiber optic digital data transmitting system
06/19/1985EP0145343A2 Optical fibre test method and apparatus for performing the method
06/18/1985US4524462 System for jointly transmitting high-frequency and low-frequency digital signals over a fiber-optical carrier
06/18/1985US4523805 Device for transferring information through fiberoptic bundles without distortion of information transferred therethrough
06/11/1985US4523099 Device for transmitting analog sensor data via fiber optics
06/11/1985CA1188738A1 Electronic telephone exchanges and optical fibre links for use therein
06/10/1985EP0126065A4 Continuously variable fiber optic delay line.
06/06/1985EP0076844A4 Data processing system having dual-channel system bus.
06/05/1985EP0143561A2 Fiber optic amplifier
06/05/1985EP0143485A1 Method and circuit arrangement for increasing the signal-to-noise ratio of a periodic electrical signal
06/05/1985EP0143224A2 Method of recognizing the failure of one or more transmission channels in a redundant optical transmission system
06/04/1985US4521920 Method and an arrangement for increasing the dynamic range at the input stage of a receiver in an optical fibre information transmission system
05/1985
05/29/1985EP0143006A2 Light emitting diode driver circuit
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