| Patents for H04B 1 - Details of transmission systems, not covered by a single one of groups; Details of transmission systems not characterised by the medium used for transmission (188,568) |
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| 09/27/1984 | WO1984003807A1 Fm stereophonic radio broadcasting system having s channel companding |
| 09/26/1984 | EP0119841A2 Redundant switchover system for a TDMA satellite communication equipment |
| 09/26/1984 | EP0119561A2 Method of tuning the resonant circuits of a radio receiver |
| 09/26/1984 | EP0119290A1 Three-stage single-side band premodulated frequency carrier system |
| 09/26/1984 | EP0119280A1 Integrated circuit for decoding radio broadcast traffic area identification signals |
| 09/25/1984 | US4473904 Speech information transmission method and system |
| 09/25/1984 | US4473852 Noise reduction system |
| 09/25/1984 | CA1175170A1 Agc system for wide band tuner |
| 09/25/1984 | CA1175114A1 Transversal type smear-desmear filter |
| 09/19/1984 | EP0118771A2 Compression and expansion of digitized voice signals |
| 09/18/1984 | US4472820 Program swallow counting device using a single synchronous counter for frequency synthesizing |
| 09/18/1984 | US4472815 Pulse interference cancelling system for spread spectrum signals |
| 09/18/1984 | US4472814 CW Interference cancelling system for spread spectrum signals |
| 09/18/1984 | US4472685 Phase-locked loop frequency demodulator and frequency synthesizer |
| 09/12/1984 | EP0118104A2 Receiver device of entertainment electronics with a memory for the desired programme |
| 09/12/1984 | EP0117946A2 Co-channel interference measurement system |
| 09/11/1984 | US4471493 Wireless telephone extension unit with self-contained dipole antenna |
| 09/11/1984 | US4471492 Voltage indicating arrangement for a radio transceiver |
| 09/11/1984 | US4471491 Service channel signal transmission system |
| 09/11/1984 | US4471318 Circuit for noise reduction particularly useful with signal recording/reproducing apparatus |
| 09/11/1984 | CA1174365A1 Pcm signal processing circuit |
| 09/05/1984 | EP0117654A1 Multistage amplifier |
| 09/04/1984 | US4470147 Radio receiver with quadrature demodulation and digital processing |
| 09/04/1984 | US4470145 Single sideband quadricorrelator |
| 09/04/1984 | US4470138 Non-orthogonal mobile subscriber multiple access system |
| 09/04/1984 | US4470135 Connection device with automatic disconnection of power supply when connection members are disconnected |
| 09/04/1984 | US4470072 Method of band compression |
| 09/04/1984 | CA1173926A1 Line protection switch controller |
| 09/04/1984 | CA1173910A1 Radiotelephone with hands-free operation |
| 08/29/1984 | EP0117197A1 Method of and device for emitting and/or receiving waves such as radiowaves |
| 08/29/1984 | EP0117121A2 Remote control system |
| 08/29/1984 | EP0116975A2 Speech-adaptive predictive coding system |
| 08/29/1984 | EP0116968A1 Adaptive echo canceller |
| 08/29/1984 | EP0116577A1 Data signalling system. |
| 08/28/1984 | US4468785 Telemetry system with signal booster for digital data transmission through a transmission line |
| 08/28/1984 | US4468784 RF signal conversion apparatus |
| 08/28/1984 | US4468537 Sound system having suppression of AM stereophonic receiving circuit-induced noise |
| 08/28/1984 | CA1173521A1 Control circuit for semiconductor element with control electrode |
| 08/28/1984 | CA1173509A1 Fm receiver for reception of special announcements and general programs |
| 08/28/1984 | CA1173508A1 Fm receiver for general programs and special announcements |
| 08/22/1984 | EP0116458A1 Cassette tape players combined with radio receivers |
| 08/22/1984 | EP0116064A1 General purpose data control terminal |
| 08/21/1984 | US4467473 Time compression multiplex digital transmission system |
| 08/21/1984 | US4467287 Signal expander |
| 08/21/1984 | US4467141 Telecommunication system with radio line |
| 08/21/1984 | CA1173111A1 Wrist am radio receiver |
| 08/21/1984 | CA1173110A1 Device for disconnecting the receiver in case of a small signal-to-noise ratio for a digital-modulated radio system |
| 08/15/1984 | EP0115966A2 Control circuit for a radio transceiver |
| 08/15/1984 | EP0115618A1 Digital speech transmission method using a single radio channel |
| 08/15/1984 | EP0115507A1 General purpose data control system. |
| 08/15/1984 | EP0115499A1 Selective call paging and priority signalling system. |
| 08/14/1984 | US4466133 Radio receiver apparatus including multipath fade compensating arrangement |
| 08/14/1984 | US4466085 Tape reproducing apparatus combined with a radio set |
| 08/14/1984 | CA1172710A1 Level detecting circuit |
| 08/14/1984 | CA1172701A1 Data transceiving modem |
| 08/08/1984 | EP0115330A2 Receiving apparatus |
| 08/08/1984 | EP0115319A2 System for the transmission and/or storage of analog values |
| 08/08/1984 | EP0115145A1 Television program timer apparatus |
| 08/08/1984 | EP0115139A2 Improvements in or relating to radio communication apparatus and systems |
| 08/07/1984 | US4464792 Portable transmitter enclosure |
| 08/07/1984 | US4464783 Speech coding method and device for implementing the improved method |
| 08/07/1984 | US4464782 Transmission process and device for implementing the so-improved process |
| 08/07/1984 | US4464770 Synchronous radio or television receiver with analog high frequency section followed by digital low frequency section |
| 08/07/1984 | CA1172366A1 Methods and apparatus for encoding and constructing signals |
| 08/02/1984 | WO1984003015A1 Telecommunication terminal |
| 08/02/1984 | WO1984003014A1 Transceiver with controller for multiple function switch |
| 07/31/1984 | US4463382 Automatic, remote signal source selector |
| 07/31/1984 | US4463350 Communication system having designated transmission lines |
| 07/31/1984 | CA1171961A1 Method and apparatus for automatic control of electronic equipment |
| 07/31/1984 | CA1171930A1 Pcm signal processing apparatus |
| 07/31/1984 | CA1171926A1 Input selection arrangement for applying different local oscillator signals to a prescaler of a phase- lock loop tuning system |
| 07/31/1984 | CA1171910A1 Superregenerative receiver |
| 07/24/1984 | US4462114 Signum signal generator |
| 07/24/1984 | US4462107 Radio receiver for frequency shift keyed signals |
| 07/24/1984 | US4462099 Error source excluding data transmission system |
| 07/24/1984 | US4462098 Radio frequency signal combining/sorting apparatus |
| 07/24/1984 | US4462001 Baseband linearizer for wideband, high power, nonlinear amplifiers |
| 07/24/1984 | CA1171565A1 Transformerless hybrid circuit |
| 07/24/1984 | CA1171492A1 Remote control apparatus |
| 07/24/1984 | CA1171464A1 Receiver having a search tuning circuit |
| 07/18/1984 | EP0113615A1 Device for treating speech signals for radioelectrical transmit-receive equipment adapted for transmission and reception of speech signals |
| 07/17/1984 | US4461041 Integrated RF receiver/waveguide |
| 07/17/1984 | US4461038 Television tuner circuit |
| 07/17/1984 | US4461034 Unlocking attenuator for automatic tuning receiver |
| 07/17/1984 | US4461033 Transceiver |
| 07/17/1984 | US4461022 Expandable bandwidth compression and restoration system |
| 07/17/1984 | US4460890 Direct digital to digital sampling rate conversion, method and apparatus |
| 07/17/1984 | CA1171139A1 Dual mode tone detector circuit |
| 07/11/1984 | EP0113171A2 Automatic interference cancelling apparatus |
| 07/11/1984 | EP0113082A2 Optical signal receiving apparatus |
| 07/10/1984 | US4459595 Condition responsive RF transmitting device |
| 07/10/1984 | US4458869 Holder for micro-receiver or transmitter-receiver |
| 07/04/1984 | EP0112589A1 Device for the programmed control of a radio or television reception device |
| 07/04/1984 | EP0112410A1 Single side-band transmitter |
| 07/04/1984 | EP0042853B1 Tunable receiver front end |
| 07/03/1984 | US4458271 Method and circuit for the transmitting, recording, and/or reproducing of wide-band signals |
| 07/03/1984 | US4458217 Slot-coupled microwave diplexer and coupler therefor |
| 07/03/1984 | CA1170382A1 Arrangement for adjusting an adaptive digital balance filter included in a subscriber unit |
| 06/27/1984 | EP0112221A1 Switching arrangement to select a modulator from two of these, and for connecting it to a transmitter |
| 06/27/1984 | EP0112185A1 Microwave transmitting and receiving arrangements |