| Patents for H04B 7 - Radio transmission systems, i.e. using radiation field (186,426) |
|---|
| 01/03/1978 | US4066964 Communication system |
| 12/27/1977 | US4065718 Multipath communications system |
| 12/20/1977 | US4064488 Sampled signal detector |
| 12/20/1977 | US4064458 Electromagnetic wave communication systems |
| 12/13/1977 | US4063173 Dual mode receiver |
| 12/13/1977 | US4063038 Error coding communication terminal interface |
| 12/13/1977 | US4063033 Signal quality evaluator |
| 12/13/1977 | US4063031 System for channel switching based on speech word versus noise detection |
| 11/29/1977 | US4060808 Antenna system with automatic depolarization correction |
| 11/15/1977 | US4058713 Equalization by adaptive processing operating in the frequency domain |
| 11/08/1977 | US4057761 Received signal selecting system with priority control |
| 11/08/1977 | US4057758 Mobile diversity radio communication system |
| 11/01/1977 | US4056781 Device for calling a ground station by an aircraft |
| 11/01/1977 | US4056780 Vehicle repeater prioritization system |
| 11/01/1977 | US4056779 Vehicular repeater |
| 10/18/1977 | US4054753 Double sync burst TDMA system |
| 10/11/1977 | US4053894 Radio signal switching system employing dielectric rod antennas |
| 10/04/1977 | US4052678 Noise floor indicative circuit |
| 10/04/1977 | US4052670 Space diversity system in pcm-tdma telecommunication system using stationary communication satellite |
| 09/27/1977 | US4051474 Interference rejection antenna system |
| 08/30/1977 | US4045799 Radio locating unit for persons in distress |
| 08/09/1977 | US4041397 Satellite up link diversity switch |
| 08/09/1977 | US4041393 Vehicle voice data link |
| 08/09/1977 | US4041389 Nonfrequency-converting microwave radio repeater using a low power consumption amplifier |
| 08/02/1977 | US4040053 Transponder system for the transfer of signalling information for rail-bounded vehicles |
| 08/02/1977 | US4039953 Automatic aerial attenuator |
| 08/02/1977 | US4039749 Spread spectrum demodulator |
| 07/26/1977 | US4038600 Power control on satellite uplinks |
| 07/12/1977 | US4035729 Audio signal quality indicating circuit |
| 07/12/1977 | US4035728 Diversity receiving system |
| 07/12/1977 | US4035726 Or improving high-latitude and other communications or radio wave surveillance systems by partial control of radio wave et al. |
| 07/05/1977 | US4034405 Television facsimile transmission system |
| 06/28/1977 | US4032884 Adaptive trunk data transmission system |
| 06/28/1977 | US4032847 Distortion adapter receiver having intersymbol interference correction |
| 06/28/1977 | US4032846 Digital mobile communication system and method |
| 06/28/1977 | US4032845 Surface wave communication system |
| 06/28/1977 | US4032719 Modular slot interchange digital exchange |
| 06/21/1977 | US4031471 Automatic frequency control circuit |
| 06/21/1977 | US4031330 Digital radio transmission system |
| 06/14/1977 | US4030099 Digital antenna control apparatus for a communications terminal |
| 06/14/1977 | US4030040 Received signal selecting system |
| 06/14/1977 | US4030033 Method and apparatus for transmitting messages to and from remote locations |
| 06/14/1977 | US4029900 Digital synchronizing signal recovery circuits for a data receiver |
| 06/07/1977 | US4028497 Acquisition technique for time division multiple access communication system |
| 05/31/1977 | US4027247 Receiver especially for use as a diversity combining receiver with channel selection capability |
| 05/31/1977 | US4027105 Control system to re-establish the orthogonality of two cross-coupled orthogonally polarized transmitted signals |
| 05/24/1977 | US4025853 Method and apparatus for radio system cochannel interference suppression |
| 05/10/1977 | US4022973 Apparatus for indicating synchronization and out-of-synchronization conditions |
| 05/03/1977 | US4021609 System for regenerating a data from a burst signal which is received and processing said data with a local clock and the circuit for carrying out the same |
| 04/19/1977 | US4019138 Frequency synchronizing system for satellite communication |
| 04/19/1977 | US4018993 Telephone system comprising a satellite |
| 04/12/1977 | US4017798 Spread spectrum demodulator |
| 04/12/1977 | US4017684 System for determining burst sending timing in TDMA communication |
| 04/05/1977 | US4016494 Satellite communication system with improved conference facility |
| 04/05/1977 | US4016493 Simplified land line and satellite communication switching system |
| 03/22/1977 | US4013981 Constant-resistance coupled-line type equalizer |
| 03/22/1977 | US4013962 Improved receiver selecting (voting) system |
| 03/15/1977 | US4012696 Multiple rate digital command detection system with range clean-up capability |
| 03/15/1977 | US4012597 Transmission trunk multichannel dispatch system with priority queuing |
| 03/01/1977 | US4010420 Satellite communications transmission apparatus and method |
| 03/01/1977 | US4010327 Communication system interface circuit |
| 02/22/1977 | US4009347 Modular branch exchange and nodal access units for multiple access systems |
| 02/22/1977 | US4009346 Distributional activity compression |
| 02/22/1977 | US4009345 External management of satellite linked exchange network |
| 02/22/1977 | US4009344 Inter-related switching, activity compression and demand assignment |
| 02/22/1977 | US4009343 Switching and activity compression between telephone lines and digital communication channels |
| 02/15/1977 | US4008439 Processing of two noise contaminated, substantially identical signals to improve signal-to-noise ratio |
| 02/01/1977 | US4006421 Means for improving the signal/noise ratio of signals picked up by aerials comprising several elements |
| 01/25/1977 | US4005426 Signal processing method and apparatus |
| 01/18/1977 | US4004225 Method for synchronizing the pulse frames in time multiplex data transmission via communication satellites |
| 01/18/1977 | US4004224 Method for fade correction of communication transmission over directional radio paths |
| 01/18/1977 | US4004162 Clock signal reproducing network for PCM signal reception |
| 01/18/1977 | US4004098 Satellite on-board switching system with satellite-to-satellite link |
| 01/18/1977 | US4004090 Bit synchronization circuit |
| 01/11/1977 | US4003006 Pilot tone controlled adaptive amplitude equalizer |
| 01/11/1977 | US4002980 Relay station in a telecommunications transmission system |
| 01/04/1977 | US4001693 Apparatus for establishing communication between a first radio transmitter and receiver and a second radio transmitter and receiver |
| 01/04/1977 | US4001691 Communications relay system |
| 01/04/1977 | US4001690 Method and apparatus for compensation of doppler effects in satellite communication systems |
| 12/28/1976 | US4000467 Automatic repeater stressing |
| 12/14/1976 | US3997901 Method of directing an aerial to a receiver according to a main direction |
| 12/14/1976 | US3997844 Signal selection in diversity transmission systems |
| 12/07/1976 | US3995801 Method of storing spare satellites in orbit |
| 11/30/1976 | US3995111 Transmit phase control system of synchronization burst for SDMA/TDMA satellite communication system |
| 11/23/1976 | US3993989 ELF communications system using HVDC transmission line as antenna |
| 11/09/1976 | US3991372 Circuit for reversing doppler signal modifying a carrier |
| 11/02/1976 | US3990009 Method and apparatus for uniquely encoding channels in a digital transmission system |
| 10/19/1976 | US3987447 Missile command link with pulse deletion command coding |
| 10/19/1976 | US3987444 Interference rejection system for multi-beam antenna having single control loop |
| 10/19/1976 | US3987396 Repeater system |
| 10/12/1976 | US3986167 Communication apparatus for communicating between a first and a second object |
| 10/12/1976 | US3986124 Combiner for diversity receiving systems |
| 10/12/1976 | US3986123 System for the automatic correction of polarization distortion in multichannel radiocommunication station |
| 10/12/1976 | US3986120 Telephone system comprising a satellite |
| 10/12/1976 | US3986119 Emergency communication system |
| 10/05/1976 | US3984835 Homodyne communication system |
| 09/28/1976 | US3983482 Delayed pulse transmission systems |
| 09/21/1976 | US3982075 Synchronization system for time division multiple access relay communications system |
| 09/14/1976 | US3981014 Interference rejection system for multi-beam antenna |
| 09/14/1976 | US3980945 Digital communications system with immunity to frequency selective fading |