| 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) |
|---|
| 01/27/1988 | EP0253902A1 Noise reduction apparatus and method |
| 01/26/1988 | US4721932 Ceramic TEM resonator bandpass filters with varactor tuning |
| 01/26/1988 | CA1232091A1 Frequency synthesised multichannel radio apparatus |
| 01/26/1988 | CA1232025A1 Frequency control for point to multipoint radio |
| 01/26/1988 | CA1232019A1 Transmitting-receiving station for a system for transmitting data by frequency hopping |
| 01/21/1988 | EP0235257A4 Multiplexed digital packet telephone communication method. |
| 01/20/1988 | EP0252943A1 Variable capacitance circuit. |
| 01/19/1988 | US4720710 Paging receiver having a plurality of test modes |
| 01/19/1988 | US4720700 Security system and method for electronic apparatus, particularly car radios or similar automotive audio equipment |
| 01/19/1988 | CA1231788A1 Duplex speech transmission method and a system therefor |
| 01/14/1988 | WO1988000415A1 Optical transmission system |
| 01/13/1988 | EP0252271A2 Portable radio-receiver |
| 01/13/1988 | EP0159330B1 Connection unit for interconnecting intercorresponding electric apparatus |
| 01/12/1988 | US4719322 Radio housing and expandable chassis with integral keypad and acoustic speaker seal |
| 01/12/1988 | CA1231391A1 Cassette tape player combined with a radio receiver which has multiple push buttons such that the stop push button can be used to turn off either the casette tape player or theradio receiver |
| 01/12/1988 | CA1231384A1 Signal transmission and reception system |
| 01/07/1988 | EP0251748A1 Optical transmission system |
| 01/07/1988 | EP0251028A2 Audio signal transmission method |
| 01/07/1988 | EP0251007A2 Paging receiver having a noise-immune verification circuit for disabling battery saving operation |
| 01/07/1988 | DE3621513A1 Audio signal transmission |
| 01/05/1988 | US4718116 Method and apparatus for receiving a compressed composite signal |
| 01/05/1988 | US4718115 Radio receiver for carrying out self diagnosis without interference |
| 01/05/1988 | US4718114 AC overload protective circuit |
| 01/05/1988 | US4718113 Zero-IF receiver wih feedback loop for suppressing interfering signals |
| 01/05/1988 | US4718112 Remote control apparatus |
| 01/05/1988 | US4718110 Portable two way radio with split universal device connector apparatus |
| 01/05/1988 | US4717904 Collision responsive signal emitter for a vehicle |
| 12/29/1987 | US4716576 Apparatus for controlling transmitter-receiver |
| 12/29/1987 | US4716574 Wirelessly functioning signal transmission system |
| 12/29/1987 | US4716573 Method of reducing the effect of narrowband jammers in radio communication between two stations |
| 12/29/1987 | CA1230927A1 Transmission system for the transmission of data signals in a modulation band |
| 12/29/1987 | CA1230926A1 Radio communication device and method of controlling transmitter output power |
| 12/29/1987 | CA1230925A1 Programmable radio |
| 12/23/1987 | EP0249930A1 Method for synchronizing two binary streams |
| 12/23/1987 | CN86208891U Duplex selective calling telephone system making use of low voltage power line carrier wave |
| 12/23/1987 | CN86208084U Ask-psk modulator |
| 12/22/1987 | US4715064 Adaptive hybrid circuit |
| 12/22/1987 | US4714439 Electrical connector |
| 12/22/1987 | CA1230647A1 Radio communication system |
| 12/17/1987 | WO1987007794A1 Characterized fast tuning control for a television system |
| 12/17/1987 | WO1987007792A1 Device to protect against interference signals |
| 12/17/1987 | WO1987007750A1 Speech processor |
| 12/17/1987 | EP0231259A4 Nationwide radio paging system. |
| 12/15/1987 | US4713801 Radio-tape recorder for automotive use |
| 12/15/1987 | US4713776 System for simultaneously coding and decoding a plurality of signals |
| 12/15/1987 | US4713631 Varactor tuning circuit having plural selectable bias voltages |
| 12/09/1987 | EP0248713A1 Background noise reduction device in an electroacoustic line-up |
| 12/09/1987 | EP0248609A1 Speech processor |
| 12/08/1987 | US4712105 Remote control hand apparatus for operating different modules |
| 12/08/1987 | CA1230165A1 Receiver circuit |
| 12/08/1987 | CA1230163A1 Polar loop transmitter |
| 12/08/1987 | CA1230060A2 High fidelity stereophonic reproduction system |
| 12/03/1987 | DE3619856A1 Emergency call system |
| 12/03/1987 | DE3618170A1 Arrangement for suppressing the transmission frequency of a radio-frequency transmitter at the input of an adjacent receiver |
| 12/02/1987 | EP0247790A2 Secure communication system for multiple remote units |
| 12/02/1987 | EP0247615A1 Transmitter for short electromagnetic waves |
| 12/02/1987 | EP0247601A2 Paging receiver having audible and vibrator annunciating means |
| 12/02/1987 | EP0247118A1 Interface circuit. |
| 12/01/1987 | US4710973 Varactor diode tuner with band switched coils and lines |
| 12/01/1987 | US4710972 SHF receiver |
| 12/01/1987 | US4710960 Speech-adaptive predictive coding system having reflected binary encoder/decoder |
| 12/01/1987 | US4710958 Circuit for controlling separation and high-cut operation of a stereo demodulator in an FM radio receiver |
| 12/01/1987 | US4710907 Operation prohibition device for an audio instrument |
| 12/01/1987 | US4710737 Band switching circuit tuner |
| 12/01/1987 | US4710723 Receiver having a modulation amplifier for enhancing reception of a desired signal in the presence of interference |
| 12/01/1987 | CA1229885A1 Demodulating signals from zero if receiver using sampling techniques |
| 11/30/1987 | EP0094431A4 Telemetry system with signal booster for digital data transmission through a transmission line. |
| 11/25/1987 | EP0246663A2 Channel switching system without instantaneous signal loss |
| 11/25/1987 | EP0246658A2 Transmitter/Receiver apparatus |
| 11/25/1987 | EP0246640A2 Transmit/receive module for phased array antenna system |
| 11/25/1987 | EP0246546A1 Telephone subscriber circuit |
| 11/24/1987 | US4709412 Remote control unit integrator console |
| 11/24/1987 | US4709407 Band discriminating method in a receiver |
| 11/24/1987 | US4709404 Battery-powered radio communication apparatus capable of prolonging the communicable state thereof |
| 11/24/1987 | US4709403 Apparatus for controlling output power of transmitter |
| 11/24/1987 | US4709201 Portable radio battery pack with on-off switch |
| 11/24/1987 | CA1229662A2 Local modulated carrier data network with a collision avoidance protocol |
| 11/24/1987 | CA1229661A2 Local modulated carrier data network with a collision avoidance protocol |
| 11/19/1987 | WO1987007102A1 Improvements in or relating to a transceiver interference cancellation system |
| 11/19/1987 | WO1987007099A1 Digital zero if selectivity section |
| 11/19/1987 | EP0245363A1 Analog signal encoding and decoding apparatus and methods. |
| 11/19/1987 | EP0245337A1 Frequency doubling oscillator and mixer circuit. |
| 11/19/1987 | DE3616323A1 Muting for a digital receiver |
| 11/18/1987 | CN87101989A Frequency synthesizer of radio broadcast telephone system with multi-allotable frequency channels |
| 11/18/1987 | CN86103153A Power-saving technique using interrupted transmitting |
| 11/17/1987 | US4707858 Utilizing word-to-digital conversion |
| 11/17/1987 | US4707839 Spread spectrum correlator for recovering CCSK data from a PN spread MSK waveform |
| 11/17/1987 | US4707729 System for the line-wise compression of binary data of a picture field in a compression device, decompression device for use in such a system, and display device including such a decompression device |
| 11/11/1987 | EP0245024A2 Radio communication system with power saving disablement prior to call handling processes |
| 11/11/1987 | EP0244658A2 Car radio equipped with theft prevention means |
| 11/10/1987 | US4706286 Method and circuit for extraction of Doppler information from a pseudo-noise modulated carrier |
| 11/10/1987 | US4706265 Code converting system and method for band compression of digital signals |
| 11/10/1987 | US4706243 Single-channel-per-carrier communication system including a voice-activated transmission power controller |
| 11/10/1987 | US4706091 Cockpit transmission assembly |
| 11/10/1987 | US4706085 Apparatus and method for generating multi-digit codes |
| 11/10/1987 | US4705994 Electric equipment driving circuit |
| 11/10/1987 | CA1229134A1 Signal transmitting and/or receiving apparatus |
| 11/05/1987 | WO1987006783A1 Method and device for recording and reading of numerical sound information signals |
| 11/04/1987 | EP0243899A2 Battery-saving method for a cordless telephone system |
| 11/03/1987 | US4704740 Display pager with separate readout module |