| 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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| 02/16/1994 | EP0583084A1 Non-contact IC card, non-contact IC card reader/writer and data transmission method |
| 02/16/1994 | EP0583027A1 Circuit for determining the field strength of FM transmitters |
| 02/16/1994 | EP0582939A1 Method for selecting traffic information in an RDS radio receiver |
| 02/16/1994 | EP0582935A1 Mounting system for electrical connectors |
| 02/16/1994 | EP0582878A1 Circuit for compensation of non-linear distortion in a transmission system |
| 02/16/1994 | EP0582874A1 Circuit for frequency-dependent compensation of second order distortion in a transmission system |
| 02/16/1994 | EP0582578A1 A method and a device for controlling a radio transmitter |
| 02/16/1994 | CN1082287A Method and apparatus for canceling spreadspectrum noise |
| 02/16/1994 | CN1082283A High-speed facility protection in a digital telecommunications system |
| 02/16/1994 | CN1082279A A method and an arrangement of estimating transmitted symbols at a receiver in digital signal transmission |
| 02/16/1994 | CN1082278A Virtual radio interface |
| 02/16/1994 | CN1082272A Apparatus and method for reducing power consumption in a mobile communications receiver |
| 02/15/1994 | US5287558 FM receiver |
| 02/15/1994 | US5287557 FM receiver |
| 02/15/1994 | US5287556 Interference reduction using an adaptive receiver filter, signal strength, and BER sensing |
| 02/15/1994 | US5287555 Power control circuitry for a TDMA radio frequency transmitter |
| 02/15/1994 | US5287554 Portable radio communication equipment |
| 02/15/1994 | US5287553 Method for detecting the absence of a portable radiotelephone from a mobile radiotelephone system |
| 02/15/1994 | US5287549 Commuication device and method using transceiver squelch control |
| 02/15/1994 | US5287406 Hybrid circuit having a two-wire/four-wire converting function |
| 02/15/1994 | US5287387 Low splatter peak-to-average signal reduction |
| 02/15/1994 | US5287384 Frequency hopping spread spectrum data communications system |
| 02/15/1994 | US5287184 Television receiver for microwave reception with provisions for reducing interference |
| 02/15/1994 | US5287115 Automatic adjustment of receiver apparatus based on channel-bit-error-rate-affected parameter measurement |
| 02/15/1994 | US5287112 High speed read/write AVI system |
| 02/15/1994 | CA1327084C System for switching from working units to stand-by units |
| 02/15/1994 | CA1327069C Receiver for bandspread signals, particularly gps receiver |
| 02/14/1994 | CA2100932A1 Method for telephone absent alert |
| 02/09/1994 | EP0582423A1 Antenna device for radio apparatus |
| 02/09/1994 | EP0582391A1 Clock generator with power savings capability |
| 02/09/1994 | EP0582343A1 Communication of control messages between apparatus over a serial data bus |
| 02/09/1994 | EP0582233A1 Adaptive receiver for multipath fading channels |
| 02/09/1994 | EP0582150A1 Ball-operated control device for a clock used for reception of radio messages |
| 02/09/1994 | EP0417150B1 Fm radio receptor unit |
| 02/09/1994 | EP0252943B1 Variable capacitance circuit |
| 02/09/1994 | CN2155641Y Recording and playback earphone |
| 02/09/1994 | CN1081804A Group facility protection in a digital telecommunications system |
| 02/09/1994 | CN1081798A A communications device |
| 02/09/1994 | CN1081797A Technology and operation terminal for directly name-calling pager station |
| 02/08/1994 | US5285500 Car amplifier with optional plug-in modules |
| 02/08/1994 | US5285498 Method and apparatus for coding audio signals based on perceptual model |
| 02/08/1994 | US5285472 System for determining the acquisition of, and frequency compensating, a phase modulated pseudonoise sequence signal |
| 02/08/1994 | US5285471 Spread spectrum receiving device |
| 02/08/1994 | US5285470 Methods of noise-reduced and bandwidth-reduced television transmission |
| 02/08/1994 | US5285426 Rollerball control arrangement for a timepiece adapted to receive radio broadcast messages |
| 02/08/1994 | US5285348 Circuit assembly for down converter for satellite communications |
| 02/08/1994 | CA1326889C Transponder |
| 02/04/1994 | CA2100609A1 Rollerball control arrangement for a timepiece adapted to receive radio broadcast messages |
| 02/03/1994 | WO1994003017A1 Universal remote control device |
| 02/03/1994 | WO1994003002A1 Frequency hopping time-diversity communications systems and transceivers for local area networks |
| 02/03/1994 | WO1994002996A1 Improvements in or relating to mobile cellular radio systems |
| 02/03/1994 | WO1994002991A1 Method for channel estimation using individual adaptation |
| 02/03/1994 | DE4225052A1 Remote control unit for domestic entertainment electronic appts., e.g. TV - has push-buttons for entering programme details which can be called up and transmitted or varied |
| 02/02/1994 | EP0581573A1 Universal radio telephone |
| 02/02/1994 | EP0581435A2 Audio data coding methods and apparatus |
| 02/02/1994 | EP0581262A1 Auditory prosthesis for adaptively filtering selected auditory component by user activation and method for doing same |
| 02/02/1994 | EP0581261A1 Auditory prosthesis with user-controlled feedback |
| 02/02/1994 | EP0580617A1 Radio receiver, especially vehicle radio. |
| 02/02/1994 | CN2155106Y Remote control receiving device for satellite receiver |
| 02/02/1994 | CN2155105Y Knob selecting broadcasting radio |
| 02/02/1994 | CN2155104Y Electromagnetic wave protecting cover for mobile telephone |
| 02/02/1994 | CN2155103Y Shell of distant documents collector |
| 02/02/1994 | CN1081551A Fsk receiver |
| 02/02/1994 | CN1081547A Improved system for transmitting and receiving |
| 02/01/1994 | US5283780 Digital audio broadcasting system |
| 02/01/1994 | US5283533 Amplifier signal level detector for a mobile communication system |
| 02/01/1994 | US5283529 Oscillation maintenance circuit |
| 01/31/1994 | CA2101592A1 Frequency stabilizing circuit for a /4 shift qpsk signal receiver |
| 01/30/1994 | CA2100015A1 Auditory prosthesis with user-controlled feedback cancellation |
| 01/27/1994 | DE4323015A1 Stereophonic radio receiver with reception strength detector - controls distribution between right and left channels according to detected demodulated signal level |
| 01/26/1994 | EP0580505A1 Adaptation system between an antenna connector and a socket of a radio telephone |
| 01/26/1994 | EP0580341A2 Integrated circuit and cordless telephone using the integrated circuit |
| 01/26/1994 | EP0580334A2 Portable radiotelephone |
| 01/26/1994 | EP0580269A2 Signal filter |
| 01/26/1994 | EP0580243A2 Narrow band interference frequency excision method and means for spread spectrum communication |
| 01/26/1994 | EP0580216A1 System and receiver for orthogonal frequency division multiplexed signals provided with a frequency synchronisation circuit |
| 01/26/1994 | EP0580211A1 Multi-module consumer appliance with button-wise functional indication on a superior module |
| 01/26/1994 | EP0580125A1 Predistorter for linearization of electronic and optical signals |
| 01/26/1994 | EP0579955A1 Transmitting and receiving system |
| 01/26/1994 | EP0579891A1 Circuit for the implementation of an impedance associated to a telephone speech circuit |
| 01/26/1994 | EP0579753A1 Three-cell wireless communication system |
| 01/26/1994 | CN1081300A Transmitting and receiving system |
| 01/26/1994 | CN1023626C Cancelling circuit and transmission system for television and telephone use |
| 01/26/1994 | CN1023625C Micro antenna |
| 01/25/1994 | US5282222 Method and apparatus for multiple access between transceivers in wireless communications using OFDM spread spectrum |
| 01/25/1994 | US5282157 Input impedance derived from a transfer network |
| 01/25/1994 | US5282028 System for displaying information |
| 01/25/1994 | US5280751 Radio frequency device for marking munition impact point |
| 01/25/1994 | CA2100994A1 Narrow band interference frequency excision method and means |
| 01/20/1994 | WO1994014241A1 Remote control device having key function reassignment mode |
| 01/20/1994 | WO1994001980A1 Transmission and storage of multi-channel audio-signals when using a bit rate-reducing coding process |
| 01/20/1994 | WO1994001954A1 Multiple cavity tuning of a transmitter output in a communication system |
| 01/20/1994 | WO1994001938A1 Method and arrangement for radiocommunication using a band-spreading technique |
| 01/20/1994 | WO1994001844A1 Universal remote control assembly |
| 01/20/1994 | WO1994001304A1 Process and circuitry for supplying signals to loudspeakers and other electric consumers arranged in vehicle doors |
| 01/20/1994 | WO1993019542A3 Process for transmitting or storing digitalized, multi-channel audio signals |
| 01/20/1994 | WO1993003550A1 Intermodulation controller for radio receiver |
| 01/20/1994 | DE4223676A1 Adaptive spatial filtering or noise suppression in radio reception - provides class of possible linear planar or spatial group geometries of groups of antennae |
| 01/19/1994 | EP0579408A1 Automatic adjustment of receiver apparatus based on a bit-error-rate related parameter measurement |
| 01/19/1994 | EP0579152A1 Auditory prosthesis, noise suppression apparatus and feedback suppression apparatus having focused adapted filtering |