| 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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| 09/07/1988 | CN88101520A Omnidirectional self-adapting array signal processor |
| 09/06/1988 | US4769841 Receiver for compatible FM stereophonic system utilizing companding of difference signal |
| 09/06/1988 | CA1241784A1 Circuit for switching between balanced networks |
| 08/31/1988 | EP0280501A1 Instantaneous voltage drop detector |
| 08/31/1988 | EP0279914A2 Receiving device |
| 08/31/1988 | CN88101334A Portable radio apparatus having battery saved channel scanning function |
| 08/31/1988 | CN87209541U Low-voltage radio remote control receiver |
| 08/30/1988 | US4768230 Housing for a hand-held remote control transmitter |
| 08/30/1988 | US4768220 Channel selection in a multichannel access radio communication system without occurrence of interference |
| 08/30/1988 | US4768219 Cordless telephone |
| 08/30/1988 | US4768187 In a radio communication system |
| 08/30/1988 | US4768033 Callsign display for transceiver |
| 08/30/1988 | CA1241434A1 Method and apparatus for transferring data for digitally controlling video equipment |
| 08/24/1988 | EP0279697A2 Portable radio apparatus having battery saving channel scanning function |
| 08/24/1988 | EP0279451A2 Speech coding transmission equipment |
| 08/24/1988 | EP0279422A2 FM/FMX Stereophonic receiver |
| 08/24/1988 | CN87215491U Digital display human pulse instrument |
| 08/24/1988 | CN87209657U Simple wireless sound communication system |
| 08/23/1988 | US4766562 Digital analyzing and synthesizing filter bank with maximum sampling rate reduction |
| 08/23/1988 | CA1241076A1 Hot standby communications system |
| 08/17/1988 | CN88100554A Combined if-trap and parallel resonant circuit for television tuner |
| 08/16/1988 | CA1240741A2 Am stereo signal decoder |
| 08/10/1988 | EP0277798A2 Speaker Driver |
| 08/10/1988 | EP0277693A2 Circuit arrangement for a mixer in a HF tuner |
| 08/10/1988 | EP0277692A2 Combined IF absorption and parallel circuit for a TV tuner |
| 08/10/1988 | EP0277613A2 Audio signal transmission method |
| 08/10/1988 | EP0277392A1 Data transmission system comprising smearing filters |
| 08/09/1988 | US4763082 Selectable tuner preamplifier |
| 08/09/1988 | US4763012 Equalizer quick switch |
| 08/03/1988 | EP0276948A2 Sound field control device |
| 08/03/1988 | EP0276507A1 Arrangement for decoding a stereo multiplex signal |
| 08/03/1988 | EP0276403A2 Telephone, particularly a radiotelephone |
| 08/03/1988 | EP0276394A2 Transmission arrangement for digital signals |
| 08/03/1988 | CN87100491A Single frequency duplexer communication system |
| 08/02/1988 | US4761830 Communication device |
| 08/02/1988 | US4761829 Adaptive signal strength and/or ambient noise driven audio shaping system |
| 08/02/1988 | US4761828 Radio receiver |
| 08/02/1988 | US4761824 Battery-powered mobile communications apparatus having transmitter reset function |
| 08/02/1988 | US4761823 Communications adaptor bracket |
| 08/02/1988 | US4761821 Radio frequency signal transmission system with carrier frequencies at opposite edges of the channel |
| 08/02/1988 | US4761814 Variable bandwidth multivoice demodulating circuit |
| 08/02/1988 | US4761796 High frequency spread spectrum communication system terminal |
| 08/02/1988 | US4761795 Receiver for bandspread signals |
| 08/02/1988 | US4761651 Pulse discriminating system for reply signals in a transponder |
| 08/02/1988 | CA1240020A1 Telesignalling method and device for a digital transmission link |
| 08/02/1988 | CA1240013A1 Control signalling arrangement for a digital transmission system |
| 08/02/1988 | CA1239997A1 Battery saving signal generating circuit |
| 08/02/1988 | CA1239876A1 Variable emphasis circuit |
| 07/28/1988 | DE3701134A1 Radio receiver with extremely wide bandwidth |
| 07/27/1988 | EP0275993A2 Fmx stereophonic receiver |
| 07/27/1988 | EP0275751A1 Method and apparatus for the digital transmission of voice signals by way of a radio channel |
| 07/27/1988 | EP0275527A1 Method for the transmission and/or the use at the reception of additional information within a radio signal |
| 07/27/1988 | EP0094420B1 Data muting method and apparatus for radio communications systems |
| 07/26/1988 | US4760602 Variable preemphasis/deemphasis network |
| 07/26/1988 | US4760586 Spread spectrum communication system |
| 07/26/1988 | US4760540 Adaptive interference cancelling system and method |
| 07/26/1988 | CA1239701A1 Method and apparatus for encoding speech |
| 07/26/1988 | CA1239667A1 Frequency modulated transmitter applicable to mf broadcasting |
| 07/21/1988 | DE3700554A1 Car radio |
| 07/20/1988 | EP0275099A2 Voice analyzing and synthesizing apparatus |
| 07/19/1988 | US4759079 Random noise detecting system and method |
| 07/19/1988 | US4759078 Coordinated local oscillator receiving system |
| 07/19/1988 | US4759034 Multi-step spread spectrum communication apparatus |
| 07/19/1988 | US4758822 Bidirectional amplifier |
| 07/19/1988 | CA1239445A1 Remote control apparatus |
| 07/14/1988 | WO1988005231A1 Multiple frequency radio system employing pulse repeaters |
| 07/14/1988 | WO1988005214A1 Automatic antenna tuning system for portable communication devices |
| 07/14/1988 | WO1988005213A1 Antenna tuning apparatus for personal communications devices |
| 07/13/1988 | EP0274279A2 Holding structure for a paging receiver having extra functions |
| 07/13/1988 | EP0274157A1 Modified multi-path detector |
| 07/12/1988 | US4757536 Method and apparatus for transceiving cryptographically encoded digital data |
| 07/12/1988 | US4757530 Adaptive hybrid |
| 07/12/1988 | US4757517 System for transmitting voice signal |
| 07/12/1988 | US4757277 Compensating amplifier for automobile antenna |
| 07/12/1988 | CA1239234A1 Tuning circuit for a multiband tuner |
| 07/12/1988 | CA1239233A1 Tuning voltage tracking arrangement |
| 07/06/1988 | EP0273249A2 Fault tolerant switch with selectable operating modes |
| 07/06/1988 | EP0273031A1 Characterized fast tuning control for a television system. |
| 07/05/1988 | US4756024 RF-input circuit arrangement for a television tuner |
| 07/05/1988 | US4756022 Integrated circuit for the transmission of telephone signals |
| 07/05/1988 | US4756009 Method for transmitting digital data |
| 07/05/1988 | US4755994 Capacity expander for telephone line |
| 07/05/1988 | US4755983 Dedicated message matched filter |
| 07/05/1988 | US4755878 Image information transmitting system |
| 07/05/1988 | US4755816 Battery saving method for a selective call radio paging receiver |
| 07/05/1988 | CA1238965A1 Transmit/receive switch |
| 07/05/1988 | CA1238951A1 Method for the interference-resistant transmission of communications |
| 06/30/1988 | WO1988004862A1 Process for transmitting and/or evaluating on the receiver side information inside a radio signal |
| 06/30/1988 | DE3643689A1 Method and arrangement for digital pre-emphasis of 16 QAM signals |
| 06/30/1988 | DE3643404A1 Arrangement for feeding an extremely low frequency transmission antenna |
| 06/30/1988 | DE3642378A1 System for transmitting information with reserve switching devices |
| 06/29/1988 | EP0103707B1 User-instructing operation for electronic-consumer goods |
| 06/28/1988 | US4754450 TDM communication system for efficient spectrum utilization |
| 06/28/1988 | US4754275 Display with supplemental lighting system |
| 06/28/1988 | US4754240 Pin diode attenuators |
| 06/28/1988 | CA1238724A1 Channel switching system |
| 06/28/1988 | CA1238688A1 Radio communication system operable in cooperation with a vox system |
| 06/23/1988 | EP0258415A4 Syringe-implantable identification transponder. |
| 06/22/1988 | EP0272145A2 Card-type radio receiver having slot antenna integrated with housing thereof |
| 06/22/1988 | EP0272068A2 Microphone circuit |