| 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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| 05/25/1993 | US5214687 Method to determine transmission quality |
| 05/25/1993 | US5214678 Digital transmission system using subband coding of a digital signal |
| 05/25/1993 | US5214669 Code acquisition process and circuit for a spread-spectrum signal |
| 05/25/1993 | US5214623 Wristwatch radiotelephone |
| 05/25/1993 | US5214568 Transmission system |
| 05/25/1993 | US5214514 Compact video/sound apparatus with foldable screen |
| 05/25/1993 | US5214422 Remote control and signaling system |
| 05/25/1993 | US5214399 Circuit configuration for range changing in tuners |
| 05/25/1993 | CA1318419E Digital frequency lock tuning system |
| 05/25/1993 | CA1318391C Television system user-accessible component display apparatus |
| 05/25/1993 | CA1318368C Correlation pulse generator |
| 05/25/1993 | CA1318359C2 Radio communication device with controlled frequency and at least one further variable operating parameter |
| 05/25/1993 | CA1318358C2 Digital radio frequency receiver |
| 05/25/1993 | CA1318357C Radio telecommunication apparatus |
| 05/24/1993 | CA2083420A1 Arrangement for clock recovery |
| 05/19/1993 | EP0542633A1 Modulator, especially for digital cellular telephone system |
| 05/19/1993 | EP0542520A2 Adjustable filter means |
| 05/19/1993 | EP0542345A2 Active sound reproducer and control unit for controlling an active sound reproducer |
| 05/19/1993 | EP0542333A1 Transmitter input stage with adaptive frequency deviation control |
| 05/19/1993 | EP0542065A2 Method for decoding binary signals |
| 05/19/1993 | EP0541772A1 A personal communications device having remote control capability |
| 05/19/1993 | EP0519015A4 Offset frequency converter for phase/amplitude data measurement receivers |
| 05/19/1993 | DE4238426A1 Radio tuner for satellite broadcast reception - has channel selection circuit which operates on output from clock-driven counter of pulses from phase-locked loop frequency divider |
| 05/19/1993 | DE4231198A1 Receiver with switching diversity and several aerials - has attenuation control determining induced voltage level of selected aerial output signal. |
| 05/19/1993 | CN2133993Y Three-purpose intercom |
| 05/19/1993 | CN2133992Y Fm subcarrier receiver |
| 05/19/1993 | CN1072300A Radio broadcast transmission system and radio broadcast receiver |
| 05/18/1993 | US5212836 Power source control circuitry for an automotive portable telephone |
| 05/18/1993 | US5212833 Microcomputer controlled synthesizer-type radio receiver |
| 05/18/1993 | US5212829 Circuit arrangement for suppression of interference signals |
| 05/18/1993 | US5212828 Receiver apparatus |
| 05/18/1993 | US5212827 Zero intermediate frequency noise blanker |
| 05/18/1993 | US5212826 Apparatus and method of dc offset correction for a receiver |
| 05/18/1993 | US5212825 Synthetic heterodyne demodulator circuit |
| 05/18/1993 | US5212817 Ultra high speed scan system |
| 05/18/1993 | US5212815 Radio equipment directional coupler |
| 05/18/1993 | US5212812 End-of-transmission keying device |
| 05/18/1993 | US5212811 Radio telephone in which an off operation of an operator-activated power switch is inhibited during a talk mode |
| 05/18/1993 | US5212725 Telephone being signal responsive for extending and retracting an antenna |
| 05/18/1993 | US5212715 Digital communication signalling system |
| 05/18/1993 | US5212636 Radio receiver capable of confirming gambling results |
| 05/18/1993 | US5212578 Selection of transmission facilities using optical wavelength division multiplexing |
| 05/18/1993 | US5212491 Antenna arrangement for a portable transceiver |
| 05/18/1993 | CA1318035C Adaptive data compression method and apparatus |
| 05/13/1993 | WO1993009644A1 Process for reducing data in the transmission and/or storage of digital signals from several dependent channels |
| 05/13/1993 | WO1993009606A1 Oscillator frequency divide-down transmit offset scheme for reducing self-quieting |
| 05/13/1993 | WO1993009493A1 A wireless communication system |
| 05/13/1993 | CA2055264A1 Pager with automatic detection of insertion into holster |
| 05/12/1993 | EP0541406A1 Procedure and device for the transmission of two informations in a spread spectrum link |
| 05/12/1993 | EP0541305A1 A method to generate different frequency signals in a digital radio telephone |
| 05/12/1993 | EP0541031A1 Signal transmitting and receiving apparatus |
| 05/12/1993 | EP0540908A1 Method and apparatus for automatic tuning calibration of electronically tuned filters |
| 05/12/1993 | EP0540664A1 Sawc phase-detection method and apparatus |
| 05/12/1993 | EP0540630A1 Programmable digital acquisition and tracking controller. |
| 05/12/1993 | EP0477288A4 Paging system with energy efficient station location |
| 05/12/1993 | CN1072048A Communication signal having time domain pilot component |
| 05/11/1993 | US5210770 Multiple-signal spread-spectrum transceiver |
| 05/11/1993 | US5210532 Baby monitor receiver having indicator display and dual position clip |
| 05/11/1993 | CA1317649C Band rejection filtering arrangement |
| 05/06/1993 | CA2082099A1 Method to generate frequencies in a digital radiotelephone operating on two different frequency bands |
| 05/05/1993 | EP0540330A2 Procedure for decoding an audio signal in which other information has been included in said audiosignal by making use of masking effect |
| 05/05/1993 | EP0540329A2 Method for storing a multichannel audio signal on a compact disc |
| 05/05/1993 | EP0540195A2 Digital quadrature radio receiver with two-step processing |
| 05/05/1993 | EP0540081A1 Time multiplexed information transmission system |
| 05/05/1993 | EP0539760A2 Transmit/receive module for an electronically phased array antenna |
| 05/05/1993 | CN2132350Y Radio with automatic speech-sounds time signal |
| 05/05/1993 | CN2132349Y Miniature radio |
| 05/05/1993 | CN2132348Y Double frequency oscillating guide |
| 05/05/1993 | CN2132347Y Multipurpose radio |
| 05/05/1993 | CN2132346Y Amplitude-modulated transmitter and amplitude-modulated receiver |
| 05/05/1993 | CN1071794A Electrical interconnection apparatus |
| 05/04/1993 | US5208867 Voice transmission system and method for high ambient noise conditions |
| 05/04/1993 | US5208837 Stationary interference cancellor |
| 05/04/1993 | US5208830 Process for searching for synchronization on reception of a spread spectrum modulated signal |
| 05/04/1993 | US5208449 Portable transaction terminal |
| 05/04/1993 | CA1317349C Paging receiver having audible and vibrator annunciating means |
| 05/01/1993 | WO1993009621A1 Electronic identification system having remote automatic response capability and automatic identification method thereof |
| 04/29/1993 | WO1993009622A1 Communication signal having a time domain pilot component |
| 04/29/1993 | WO1993008651A1 Process for reducing frequency interlacing during acoustic or optical signal transmission and/or recording |
| 04/29/1993 | WO1993008650A1 Electrical connector module for multi media, broadband and baseband signal cables |
| 04/29/1993 | WO1993008648A1 Semiconductor device including a plurality of functional blocks each having a dc voltage supply line |
| 04/29/1993 | WO1993008647A1 Aerial reception process |
| 04/28/1993 | EP0539252A1 Method for synchronising two signals |
| 04/28/1993 | EP0539230A2 High speed, low power high common mode range voltage mode differential driver circuit |
| 04/28/1993 | EP0539224A2 Detection of amplifier failure |
| 04/28/1993 | EP0539132A1 EMC-enclosure |
| 04/28/1993 | EP0539070A1 Transmitter switch-on in a dual-mode mobile phone |
| 04/28/1993 | EP0538933A1 Communications receiver employing a prepaid identity card |
| 04/28/1993 | EP0538546A2 Method and apparatus for controlling a TDM communication device |
| 04/28/1993 | EP0538456A1 Receiver with signal classifier |
| 04/28/1993 | EP0538317A1 A method for improving stop-band attenuation of a duplex filter |
| 04/28/1993 | EP0538289A1 Process for transmitting a time-variable control parameter |
| 04/28/1993 | EP0341239B1 Antenna tuning apparatus for personal communications devices |
| 04/28/1993 | CN2131258Y Multipurpose interface for power of wireless portable transceiver |
| 04/28/1993 | CN1071540A Intermittent operation receiver |
| 04/27/1993 | US5206954 Satellite signal receiving apparatus |
| 04/27/1993 | US5206905 Password protected device using incorrect passwords as seed values for pseudo-random number generator for outputting random data to thwart unauthorized accesses |
| 04/27/1993 | US5206884 Transform domain quantization technique for adaptive predictive coding |
| 04/27/1993 | US5206639 Single antenna dual frequency transponder |
| 04/22/1993 | WO1993009615A1 Radio transmission system and radio receiver |