| 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) |
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| 07/16/1991 | US5033113 Infrared receiver system for a remote control ceiling fan |
| 07/16/1991 | US5032885 Semiconductor device including a light receiving element, an amplifier, and an equalizer having a capacitor with the same laminate structure as the light receiving element |
| 07/16/1991 | US5031998 Polarization control on signal beams for principal-state bidirectional transmission through an optical fiber |
| 07/16/1991 | US5031992 Multiple parallel channel rotary optical coupler |
| 07/13/1991 | CA2032654A1 Optical-electronic interface module |
| 07/11/1991 | WO1991010297A1 Linear broadband signal generator using primary and secondary optical modulators |
| 07/10/1991 | EP0436300A2 Analog optical fiber communication system, and laser adapted for use in such a system |
| 07/10/1991 | EP0436202A1 A narrowband laser source |
| 07/10/1991 | EP0435939A1 Dual mode light emitting diode/detector diode for optical fiber transmission lines |
| 07/10/1991 | EP0344215A4 Wireless optical communication system |
| 07/09/1991 | US5031236 Polarization insensitive optical signal reception |
| 07/09/1991 | US5031235 Cable system incorporating highly linear optical modulator |
| 07/09/1991 | US5031234 Fiber optic frequency transfer link |
| 07/09/1991 | US5031196 Receiver for use in a remote control system |
| 07/09/1991 | US5031188 Inline diplex lightwave transceiver |
| 07/09/1991 | US5030004 Process and apparatus for controlling the alignment of a transmit laser beam of a coherent detection optical communications transmitter/receiver terminal |
| 07/09/1991 | US5029962 Optical fiber tap utilizing reflector and resilient closure |
| 07/04/1991 | DE4029716A1 Voice operated remote control system - evaluates priority of speech command in conjunction with accuracy of matching |
| 07/04/1991 | DE4013921C1 Air pressure measuring device for aeroplane - has infrared energy source e.g. laser diode with driver feeding converter e.g. solar cell and storage capacitor |
| 07/03/1991 | EP0435467A2 Optical network |
| 07/03/1991 | EP0435370A2 Remote control television system using supplementary unit for simplified personalized control |
| 07/03/1991 | EP0435125A2 Method and apparatus for stabilizing oscillation frequency separation among a plurality of laser devices |
| 07/02/1991 | US5029336 Computer-aided tomography apparatus |
| 07/02/1991 | US5029240 Electronically tuneable fiber-optic receiver for narrow band microwave signal reception |
| 07/02/1991 | CA1285640C Light-driven phase shifter |
| 06/27/1991 | WO1991009477A1 Free space local area network system |
| 06/27/1991 | WO1991009476A1 Transmission device with an optical transmission path |
| 06/27/1991 | WO1991007010A3 Optical amplifier |
| 06/27/1991 | DE3942817A1 Terminal appts. for message transmission over optical fibres - guards against laser radiation hazard from broken fibre by automatic opening and reclosure of safety switch |
| 06/27/1991 | DE3942428A1 Supplementary appts. with infrared link for cordless telephone - cooperates with handset to which photodiode and solar battery for demodulator and amplifying stages are added |
| 06/26/1991 | EP0434236A2 Frequency division multiple access network |
| 06/26/1991 | EP0434235A2 Tone spacing and power level monitoring for FSK lightwave systems |
| 06/26/1991 | EP0434228A1 Data communications system |
| 06/26/1991 | EP0434004A1 Transmission system using parallel optic links to achieve enhanced dynamic range |
| 06/26/1991 | EP0433646A2 Optical receiver |
| 06/26/1991 | EP0433481A1 Method for bidirectionally transmitting optical signals over optical fiber conductors |
| 06/26/1991 | EP0433468A1 Current voltage converter |
| 06/25/1991 | US5027436 Optical hybrid for coherent detection systems |
| 06/25/1991 | US5027435 Optical communication systems using Fabry-Perot cavities |
| 06/25/1991 | US5027434 Apparatus for bidirectional transmission of optical signals |
| 06/25/1991 | US5027433 Remote infrared transceiver and method of using same |
| 06/25/1991 | US5027080 Source follower light reception circuit |
| 06/25/1991 | US5026978 Photoelectric switch having pulse driver circuitry |
| 06/25/1991 | US5026137 Light signal transmission system |
| 06/23/1991 | WO1991010298A1 Passive optical ring network |
| 06/19/1991 | EP0433023A2 Improved interference suppression in optical communication systems |
| 06/19/1991 | EP0432922A2 An optical apparatus for electrically inter-coupling rotating and stationary devices |
| 06/19/1991 | EP0432734A2 A device and a method for distinguishing faults employed in an optical transmission system |
| 06/19/1991 | EP0432544A2 Optronic correlator |
| 06/19/1991 | EP0432428A2 Byte wide repeat filter |
| 06/19/1991 | CN1012927B Binary data regenarator with adaptive threshold level |
| 06/18/1991 | US5025488 Optical heterodyne detector |
| 06/18/1991 | US5025456 Burst mode digital data receiver |
| 06/18/1991 | US5025448 Optical energy absorption medium including isotope acetylene gas molecule |
| 06/18/1991 | US5025142 Light waveform changing apparatus using an optical amplifier |
| 06/18/1991 | US5024502 System to transmit optical information and comprising a plurality of transmitters and receivers connected by optical fibers |
| 06/18/1991 | US5024498 Switch box for producing freely selectable optical plug connections |
| 06/18/1991 | CA1284904C Optical space switch |
| 06/15/1991 | WO1991009475A1 Lossless optical component |
| 06/12/1991 | EP0432025A1 Optical system for message transmission |
| 06/12/1991 | EP0431687A1 High-frequency optoelectric front-end |
| 06/12/1991 | EP0431654A1 Adapter for amplified optical lines |
| 06/12/1991 | CN1052234A Low-noise optical amplification unit with reflection of pumping power |
| 06/12/1991 | CN1052223A Active fiber optical amplifier having wide band signal wavelength |
| 06/12/1991 | CN1052198A Adapter for amplified optical lines |
| 06/11/1991 | US5023951 Optical receivers |
| 06/11/1991 | US5023950 Optical transmitter, optical receiver and optical transmission apparatus and control method of optical receiver |
| 06/11/1991 | US5023949 Apparatus for generating an FSK-modulated optical signal having two different polarization conditions for an optical transmission system having an optical two-filter FSK super-heterodyne receiver |
| 06/11/1991 | US5023948 Polarization modulation of optical signals using birefringent medium |
| 06/11/1991 | US5023947 Optical equalization receiver for lightwave communication systems |
| 06/11/1991 | US5023946 Polarization diversity optical heterodyne receiver with phase adjustment of two I.F. signals for control of a local optical source |
| 06/11/1991 | US5023945 Transmission system using parallel optic links to achieve enhanced dynamic range |
| 06/11/1991 | US5023943 Electrooptical pointing device for remotely controlling electronic apparatus |
| 06/11/1991 | US5023942 Fault tolerant data transmission network |
| 06/11/1991 | US5023865 Receiving optical radiation |
| 06/11/1991 | US5023863 Optical switching system |
| 06/11/1991 | US5023463 Photonic array bus for data processing and communication systems |
| 06/11/1991 | US5023445 Signal acquisition method and automatic masking system for an OTDR |
| 06/06/1991 | DE3940041A1 Earth orbit satellite system - has number of sensor and control units coupled to on-board satellite unit |
| 06/05/1991 | WO1991008631A1 Method and apparatus for transmitting broadband amplitude modulated radio frequency signals over optical links |
| 06/05/1991 | EP0430911A1 Optical coupling device |
| 06/05/1991 | EP0430516A2 A periodic array with a nearly ideal element pattern |
| 06/05/1991 | EP0430231A2 Method of optical transmission and optical transmitter used in the same |
| 06/05/1991 | EP0430230A2 Optical transmitting apparatus |
| 06/05/1991 | EP0430052A2 Code points for transferring data from a network transmission medium to a station on the network |
| 06/05/1991 | CN1052013A Amplifier for optical fiber telecommunication lines and optical fiber telecommunication lines incorporating said amplifier |
| 06/04/1991 | CA1284683C Optical amplifiers |
| 06/02/1991 | WO1991008580A1 Fiber optic transimpedance receiver |
| 05/29/1991 | EP0429046A2 Wavelength division switching system with reduced optical components using optical switches |
| 05/29/1991 | DE3938856A1 Optical bus system with several subscriber stations - has two transmitters and receivers for at least part of subscriber stations |
| 05/28/1991 | US5020155 Audio commentary system |
| 05/28/1991 | US5020153 Tunable narrowband receiver utilizing distributed Bragg reflector laser structure |
| 05/28/1991 | US5020152 Fault tolerant-fiber optic coupler/repeater for use in high speed data transmission and the like |
| 05/28/1991 | US5020050 Cascadable optical combinatorial logic gates |
| 05/28/1991 | US5020049 Optical sub-carrier multiplex television transmission system using a linear laser diode |
| 05/28/1991 | US5019814 Wireless data coupling system and method |
| 05/28/1991 | US5019787 Optical amplifier |
| 05/28/1991 | US5018815 Fibre optic data network |
| 05/25/1991 | WO1991008623A1 Passive optical network |
| 05/22/1991 | EP0428151A2 Distortion canceling fiber optic transmission system |