| 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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| 02/13/1990 | US4900912 Driver circuit for semiconductor light-emitting device |
| 02/08/1990 | WO1990001203A1 Language training |
| 02/07/1990 | EP0353835A2 Technique for reducing distortion characteristics in fiber-optic links |
| 02/06/1990 | US4899043 Fault monitoring system for optical fiber communication systems |
| 02/06/1990 | US4898565 Direction sensing apparatus for data transmission cable connections |
| 02/06/1990 | US4898443 Coherent mixing of optical signals |
| 02/06/1990 | US4898442 Non-intrusive fibre optic tap |
| 01/31/1990 | EP0352809A2 Polarization diversity optical heterodyne receiver with phase adjustment of two i.f. signals for control of a local optical source |
| 01/31/1990 | EP0352747A2 Frequency separation stabilization method for optical heterodyne or optical homodyne communication |
| 01/31/1990 | EP0124523B1 Fiber optic switch and discretely variable delay line |
| 01/30/1990 | US4897830 Optical networks |
| 01/25/1990 | WO1990000838A1 Optical shunt device |
| 01/25/1990 | DE3825006A1 Receiver for optical signals |
| 01/25/1990 | DE3824494A1 Optical receiver |
| 01/25/1990 | DE3821814A1 Device for the transmission of signals between a rotating part and a spatially fixed part |
| 01/24/1990 | EP0352021A2 Optical amplifier with reduced nonlinearity |
| 01/24/1990 | EP0351729A2 Optical switching system |
| 01/23/1990 | US4895421 Dynamic couplers using two-mode optical waveguides |
| 01/17/1990 | EP0351236A2 Optoelectronic device for an optical communication system |
| 01/17/1990 | EP0351183A2 Optical theft deterrent system |
| 01/17/1990 | EP0351133A2 Polarization insensitive optical communication device utilizing optical preamplification |
| 01/17/1990 | EP0351132A2 Optical crossover network |
| 01/17/1990 | EP0350720A2 Optical fibre adapted for data transmission and bus system for a motor vehicle |
| 01/16/1990 | US4894818 Optical packet switching system using multi-stage combination of light triggering switches |
| 01/16/1990 | CA1264475A1 Discoloration inhibitors for aromatic amines |
| 01/10/1990 | EP0350207A2 Transceiver-based single fiber lan |
| 01/10/1990 | EP0349766A2 Optical information transmission system, especially in the subscriber connection field |
| 01/10/1990 | EP0349623A1 Active communication network. |
| 01/10/1990 | EP0349597A1 Improvements in electro optical switch architectures. |
| 01/10/1990 | CN1038731A Binary data regenerator with adaptive threshold level |
| 01/09/1990 | US4893354 System and method for self-compensating fiber-optic data transmission at temperatures up to 200 degrees C. |
| 01/09/1990 | US4893353 Optical frequency synthesizer/sweeper |
| 01/09/1990 | US4893352 Optical transmitter of modulated signals |
| 01/09/1990 | US4893300 Technique for reducing distortion characteristics in fiber-optic links |
| 01/09/1990 | US4893002 Loss of optical input circuit |
| 01/09/1990 | US4892376 Optical backplane for circuit boards |
| 01/03/1990 | EP0348925A2 Fault examining apparatus for loop-shaped data transmission system using optical fiber |
| 12/28/1989 | WO1989012950A1 Procedure and apparatus for the control of electric power |
| 12/28/1989 | DE3821438A1 Polarisation diversity receiver |
| 12/27/1989 | EP0348329A2 Serial optical interconnect bus for logic cards and the like |
| 12/27/1989 | EP0348167A2 Digital communicating method and apparatus |
| 12/27/1989 | EP0347903A2 High-speed optical packet switching system using optical buffer between incoming and outgoing channels |
| 12/27/1989 | CN1038351A Amplifing optical signals |
| 12/26/1989 | US4889985 Combined optical power meter and receiver |
| 12/26/1989 | US4889403 Distribution optical fiber tap |
| 12/20/1989 | EP0346925A2 Private branch radio communication system using optical fibers |
| 12/20/1989 | EP0346438A1 Optical wireless data communication system. |
| 12/19/1989 | US4888817 Polarization diversity light receiving system using baseband combining |
| 12/19/1989 | US4888816 Two-way optic communication system for atmospheric use |
| 12/19/1989 | US4888791 Clock decoder and data bit transition detector for fiber optic work station |
| 12/19/1989 | US4888625 Optoelectronic coupling element, and method of making same |
| 12/19/1989 | US4887880 Optical fiber connector structure |
| 12/13/1989 | EP0346169A1 Method and system for the transmission of signal packets over an optical line |
| 12/13/1989 | EP0345889A1 Device for optical heterodyne detection and integrated optical component suitable for use in such a device |
| 12/13/1989 | EP0345874A1 Optoelectronic arrangement having a coupling between an optical transmission fibre and a semiconductor laser diode |
| 12/13/1989 | CN1038002A Wireless remote-control system for electronic apparatus |
| 12/12/1989 | US4887314 Optical FSK demodulator |
| 12/12/1989 | US4887312 Method and apparatus for transmission of optical data between two electrically separated transmitting receiving units |
| 12/12/1989 | US4887309 Optical repeater for fault tracing in an optical transmission system |
| 12/12/1989 | US4886334 Optical amplifying repeater |
| 12/06/1989 | EP0344402A2 Method for the transmission of data by means of optical waveguides |
| 12/06/1989 | EP0344215A1 Wireless optical communication system |
| 12/06/1989 | EP0192730B1 Transmission of information by directed bundles of rays of electromagnetic waves having a maximum wavelength of 10mm |
| 12/05/1989 | US4885804 Optical transmitting and receiving apparatus |
| 12/05/1989 | US4885460 Device to detect frequency converted signals with high efficiency |
| 11/30/1989 | WO1989011760A1 Multifunction optical switch |
| 11/30/1989 | DE3916121A1 Light source for an optical communications system |
| 11/29/1989 | EP0344091A2 Receiving preamplifier for an optical information transmission link |
| 11/29/1989 | EP0343725A2 Optical transmitter with a laser diode |
| 11/29/1989 | EP0343489A2 Optical amplifier module |
| 11/29/1989 | EP0343439A2 Circuit arrangement of a communication network with at least one optical concentrator |
| 11/29/1989 | CN1005952B 光学外差接收机 Optical heterodyne receiver |
| 11/28/1989 | US4884278 Semiconductor laser modulation control system |
| 11/23/1989 | EP0342694A2 Optical polarisation diversity receiver |
| 11/23/1989 | EP0342525A2 Optical fiber guided tube-launched projectile system |
| 11/23/1989 | DE3816135A1 Electronic coupling for robots and automatic handling machines |
| 11/21/1989 | US4882774 Laser beam data verification system |
| 11/21/1989 | US4882772 Electro-optical light beam signal transmission system |
| 11/21/1989 | US4882771 Single laser optical communication system and method |
| 11/21/1989 | US4882770 Wireless optical communication system |
| 11/21/1989 | US4881790 Optical communications system comprising raman amplification means |
| 11/21/1989 | CA1263197A1 Portable handsets telephone communication system |
| 11/14/1989 | US4880289 Two-way optical transmission system |
| 11/08/1989 | EP0340343A1 Wireless remote control system of electronic sets |
| 11/07/1989 | US4879764 Apparatus and method for alignment of fixed communication laser stations |
| 11/07/1989 | US4879763 Optical fiber bidirectional transmission system |
| 11/07/1989 | US4879762 Optical repeater and regulated current feeding system for the same |
| 11/07/1989 | US4879761 Bistable optically clocked optical signal regenerator |
| 11/07/1989 | US4879760 Optical fiber transmissive signal modulation system |
| 11/07/1989 | US4879540 Data exchanging system using a bar code reader |
| 11/07/1989 | US4879468 Photoionization optical filter and detector |
| 11/07/1989 | US4878726 Optical transmission system |
| 11/02/1989 | WO1988005212A3 Ultra high-speed light activated microwave switch/modulator using photoreactive effect |
| 11/02/1989 | EP0339840A2 Optical communications system comprising raman amplification means |
| 11/02/1989 | EP0339326A2 Method and arrangement for driving laser diodes which are utilized in an optical sender of an information transmission system |
| 10/31/1989 | US4878254 Compact signal enhancer |
| 10/31/1989 | US4877305 Fiber optic light mode mixer |
| 10/25/1989 | EP0338789A2 Infrared data communications |
| 10/25/1989 | EP0338765A2 Radio communication system for data transmission and reception |
| 10/24/1989 | US4876442 Laser control circuit |