| Patents for H04B 17 - Monitoring; Testing (29,423) |
|---|
| 05/15/1990 | US4926497 Radio alignment/programming device |
| 05/01/1990 | US4922132 Radio frequency energy detection circuitry |
| 04/24/1990 | US4920543 Characterization of digital radio signals |
| 04/19/1990 | DE3835338A1 Method for transmitting additional signals in digital data transmission |
| 04/18/1990 | EP0363847A1 System for substituting stored video information for another video information |
| 04/17/1990 | US4918708 Analysis of digital radio transmissions |
| 04/05/1990 | DE3831866A1 Method for measuring the AM/PM conversion Kp and the compression C of a microwave link and circuit arrangement for carrying out the method |
| 03/28/1990 | CN1040892A Signal integrity control technique for rf communication system |
| 03/20/1990 | US4910794 Mobile radio data communication system and method |
| 03/06/1990 | US4907247 Satellite delay simulation system |
| 02/28/1990 | EP0203150B1 Method and apparatus for looping around a digital transmission line at a channel unit |
| 02/22/1990 | WO1990001855A1 Mobile radio paging test system |
| 02/20/1990 | US4903327 Cellular telephone with transmission-on and radio-on timers |
| 02/07/1990 | EP0353759A2 Mobile radio data communication system and method |
| 02/06/1990 | US4899043 Fault monitoring system for optical fiber communication systems |
| 01/30/1990 | CA1265231A1 Apparatus for monitoring a communications system |
| 01/23/1990 | US4896317 Supervisory system for a primary group digital transmission line |
| 01/11/1990 | WO1990000330A1 Radio meter |
| 01/03/1990 | EP0348877A2 Wristwatch receiver architecture |
| 01/02/1990 | US4891806 Constellation multiplexed inband secondary channel for voiceband modem |
| 12/26/1989 | US4890333 Test bench for wideband radio link |
| 12/26/1989 | US4890332 Apparatus for judging quality of mobile data communication |
| 12/26/1989 | US4890095 Circuit arrangement for automatically monitoring several analog electric signals |
| 12/20/1989 | EP0347151A2 Advertising panels |
| 12/19/1989 | US4888638 System for substituting television programs transmitted via telephone lines |
| 12/14/1989 | WO1989012364A1 Improvements relating to fading simulators |
| 12/14/1989 | DE3819334A1 Monitoring and control of transmission devices for digital signals |
| 12/12/1989 | US4887309 Optical repeater for fault tracing in an optical transmission system |
| 12/07/1989 | DE3818217A1 Test oscillator for duplex radio units |
| 12/06/1989 | EP0344624A2 Monitoring system for radio communication apparatus |
| 12/06/1989 | EP0344539A2 Control technique for an rf communication system |
| 12/05/1989 | US4885802 Wristwatch receiver architecture |
| 11/30/1989 | WO1989011756A1 Automatically self-calibrating oscillators in heterodyned radio receivers |
| 11/23/1989 | EP0342547A1 Method for generating an alarm suppression signal |
| 11/21/1989 | US4882768 FM communication device with avoidance of interference by substantially same channel FM signal |
| 11/14/1989 | US4881274 FM multipath noise reduction circuit |
| 11/02/1989 | EP0339641A1 Method and device for adding and separating a low rate digital channel to the high rate channel of a transmission link |
| 10/04/1989 | EP0334940A1 Method and apparatus for isolating faults in an antenna system |
| 09/26/1989 | CA1261980A1 Signal processing system |
| 09/19/1989 | US4868885 Apparatus and method for high-speed determination of received RF signal strength indicator |
| 09/14/1989 | DE3806948A1 Verfahren zum adressieren von prozessoreinheiten Method for addressing processor units |
| 09/14/1989 | DE3806947A1 Device for in-service monitoring of communication transmission devices |
| 09/13/1989 | EP0332054A2 Method for transmitting a digital signal and status information |
| 09/08/1989 | WO1989008359A1 Process for addressing processing units |
| 09/08/1989 | WO1989008358A1 Device for in-process monitoring of transmission systems |
| 09/08/1989 | WO1989008354A1 Process for controlling and/or monitoring and circuit arrangement for implementing the process |
| 08/22/1989 | US4860282 System for transmitting auxiliary signal in a multiplex communication system |
| 08/22/1989 | US4859951 Detecting faults in transmission lines employing an echo cancellation signal |
| 08/16/1989 | CN1034836A Pcm coder monitoring method and equipment |
| 07/25/1989 | US4852082 Circuit arrangement for testing the operability of the data transmission facility |
| 06/27/1989 | US4843382 Method for monitoring a digital transmission line |
| 06/21/1989 | EP0320918A2 Method for receiving a carrier modulated by an information signal |
| 06/15/1989 | DE3741151A1 Method for determining errors in a digital transmission system |
| 06/13/1989 | CA1255821A1 State information communication in a tdma satellite communication network with high frame availability |
| 05/30/1989 | US4835790 Carrier-to-noise detector for digital transmission systems |
| 05/10/1989 | EP0315199A2 Ultrasonic transducer and current loop transmitter |
| 05/10/1989 | EP0314724A1 Control of optical systems. |
| 05/10/1989 | EP0167531B1 Packetized ensemble modem |
| 05/02/1989 | US4827475 Transmitting a digital signal and an additional signal |
| 04/25/1989 | US4825449 Analysis of digital radio transmissions |
| 04/25/1989 | US4825113 Single transmission line bidirectional optical communication system |
| 04/25/1989 | US4823600 Ultrasonic transducer and current loop transmitter |
| 04/18/1989 | US4823280 Computer-controlled electronic system monitor |
| 03/23/1989 | WO1989002603A1 Method and apparatus for isolating faults in an antenna system |
| 03/21/1989 | US4815101 Step-by-step remote locating system for repeaters in a pcm link |
| 03/14/1989 | US4812738 Apparatus for analyzing transmission/reflection characteristics |
| 03/07/1989 | US4810960 Measuring adjacent channel power |
| 03/01/1989 | EP0304625A2 Test equipment for simulating multipath interference |
| 02/23/1989 | DE3726573A1 In-operation monitoring of communication transmission lines |
| 02/21/1989 | CA1250381A1 Supervisory system in communication system |
| 02/14/1989 | US4805189 Signal processing system |
| 01/25/1989 | EP0300352A1 Test apparatus for digital echo cancellers |
| 01/24/1989 | CA1249344A1 Radio receiver for carrying out self diagnosis without interference |
| 01/17/1989 | US4799063 Method and apparatus for isolating faults in an antenna system |
| 01/17/1989 | CA1249033A1 Satellite-based position determination and message transfer system with monitoring of link quality |
| 01/17/1989 | CA1249028A1 Channelized fiber optic receiver |
| 01/17/1989 | CA1249027A1 Method for the additional transmission of information via a digital auxiliary channel, and application of the method |
| 01/10/1989 | US4797949 Supervisory control of mobile telecommunications |
| 01/10/1989 | US4797735 Distortion surveillance apparatus for television signal transmission system |
| 01/03/1989 | US4795919 Zero signal state detecting circuit |
| 12/28/1988 | EP0296822A2 Carrier-to-noise detector for digital transmission systems |
| 12/06/1988 | CA1246148A1 Radio system wherein transmission power is varied according to transmission quality |
| 11/22/1988 | CA1245320A1 Method and apparatus for looping around a digital transmission line at a channel unit |
| 11/17/1988 | WO1988009093A1 Control of optical systems |
| 10/25/1988 | US4780886 Device for detecting a data signal energy drop |
| 10/25/1988 | US4780667 Magnetostatic wave delay line discriminator with automatic quadrature setting and automatic calibration |
| 10/11/1988 | US4777662 Optical communication process |
| 09/21/1988 | EP0283401A2 FM communication device with avoidance of interference by substantially same channel fm signal |
| 09/21/1988 | EP0283299A2 Radio receiver |
| 09/20/1988 | US4773094 Apparatus and method for calibrating recording and transmission systems |
| 08/30/1988 | US4768202 Signalling method and device for bidirectional digital transmission link |
| 08/30/1988 | US4768191 Digital data and orderwire combiner apparatus |
| 08/30/1988 | CA1241440A1 Method and apparatus for controlling a deflectable head |
| 08/30/1988 | CA1241379A1 Method of monitoring a radio link between a base station and a mobile station |
| 08/24/1988 | EP0279452A2 Supervisory system for a primary group digital transmission line |
| 08/23/1988 | US4766600 Characterization of digital radio signals |
| 08/23/1988 | US4765753 Method and apparatus for handing-over a radio connection from one radio cell to another radio cell of a digital radio transmission system |
| 08/23/1988 | US4765738 Method and apparatus of measuring frequency response in an optical receiving system |
| 08/16/1988 | US4764980 System for measuring delay time variation in optical fiber digital communication system |
| 08/04/1988 | DE3701788A1 Underwater cable transmission section with optical transmission elements |