Patents
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)
04/1998
04/15/1998CN1179073A Power saving mobile telephone equipment
04/15/1998CN1179072A Portable telephone device
04/15/1998CN1179071A Double frequency band mobile station using cross joint tramsmitter and receiver circuit
04/15/1998CN1179041A Vorsh QPSK sheet modulating equipment for porducing signal waveform
04/15/1998CN1179040A Device and method for producing noise in digital receiver
04/15/1998CN1179039A RDS-TMC radio receiver for processing distric special and over distric way or region mark
04/15/1998CN1179038A Power control circuit of radio frequency transmitter
04/15/1998CN1179020A Microwave mixer circuit and down converter using said circuit
04/15/1998CN1178928A Radio Modulation demodulator with power source
04/15/1998CN1038089C Appratus for coding or decoding signals and method for coding or decoding
04/15/1998CN1038081C Apparatus and method for varying coupling of radio frequency signal
04/14/1998US5740529 Method and apparatus for controlling power supplied to a receiver based on detection of errors in groups of data in a signal being received by said receiver
04/14/1998US5740528 Planar triply-balanced microstrip mixer
04/14/1998US5740527 Transceiver
04/14/1998US5740525 Method and apparatus for temperature compensation of a reference oscillator in a communication device
04/14/1998US5740524 Feed-forward RSSI assisted radio frequency amplifier power control
04/14/1998US5740523 Radio receiver
04/14/1998US5740522 Method and apparatus for reducing receive band transmitter-chain noise for a portable duplex transceiver
04/14/1998US5740521 Method and circuit for creating frequencies for a radio telephone
04/14/1998US5740520 Channel correction transceiver
04/14/1998US5740518 FM character data multiplex broadcasting signal receiving apparatus
04/14/1998US5740517 Radio pager sync acquisition timing arrangement for battery saving operation
04/14/1998US5740366 Communication network having a plurality of bridging nodes which transmit a beacon to terminal nodes in power saving state that it has messages awaiting delivery
04/14/1998US5740317 For source coding digitized audio signals
04/14/1998US5740211 Method and apparatus for a hitless switch-over between redundant signals
04/14/1998US5740207 Complex signal limiting
04/14/1998US5740129 Real time clock
04/14/1998US5740096 Filter circuit for communication
04/14/1998US5739874 Tuning system for a digital satellite receiver with fine tuning provisions
04/14/1998US5739873 Method and apparatus for processing components of a digital signal in the temporal and frequency regions
04/14/1998US5739793 Mobile communication information terminal apparatus
04/14/1998US5739792 Wireless communication device with electrical contacts
04/14/1998US5739790 RF docking adapter for portable transceivers, communication system and method for use with the same
04/14/1998CA2217439A1 Radio communication system
04/09/1998WO1998015076A1 Receiver for data broadcasting system
04/09/1998WO1998015075A2 Telematic device for a motor vehicle with car radio, position fixing system and radio telephone
04/09/1998WO1998015070A1 Determination of frequency offsets in communication systems
04/09/1998WO1998015065A1 Slotline-mounted flip chip structures
04/09/1998WO1998015064A1 Slotline-mounted flip chip
04/09/1998WO1998015055A1 Multiple preamplifier circuit for a television tuner
04/09/1998DE19742424A1 Double superheterodyne receiver circuit for HF signals
04/09/1998DE19741940A1 Kommunikationsvorrichtung mit einem verminderten Wert gefährlicher Substanzen Communication device having a reduced value of dangerous substances
04/08/1998EP0834998A2 Spread spectrum receiver with narrowband interference elimination
04/08/1998EP0834997A1 High-frequency signal receiver
04/08/1998EP0834217A1 Process for controlling the power of the transmission amplifier of radio equipment
04/08/1998EP0834123A1 Machine control module for a processor
04/08/1998EP0706730B1 Method and apparatus for automatic gain control and dc offset cancellation in quadrature receiver
04/08/1998EP0629325A4 Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a cdma cellular communications system.
04/08/1998CN2278308Y Radio transmitter for microphone
04/08/1998CN2278307Y Power supply box for mobile phone
04/08/1998CN1178617A Method and apparatus for formatting of data for transmission
04/08/1998CN1178615A Method and apparatus for using full spectrum transmitted power in a spread spectrum communication system for tracking individual recipient phase time and energy
04/08/1998CN1178440A Mobile communication receiving apparatus
04/08/1998CN1178436A Base-band interleaver for code devision multiple access mobile telecommunication system
04/07/1998US5737721 Predictive technique for signal to mask ratio calculations
04/07/1998US5737720 Low bit rate multichannel audio coding methods and apparatus using non-linear adaptive bit allocation
04/07/1998US5737718 Method, apparatus and recording medium for a coder with a spectral-shape-adaptive subband configuration
04/07/1998US5737717 Method and apparatus for altering frequency components of a transformed signal, and a recording medium therefor
04/07/1998US5737698 Antenna/amplifier and method for receiving orthogonally-polarized signals
04/07/1998US5737697 Transmission power control circuit for a communication system
04/07/1998US5737696 Dielectric filter having inductive coupling windows between resonators and transceiver using the dielectric filter
04/07/1998US5737687 Wireless telephone transceiver system
04/07/1998US5737434 Multi-band audio compressor with look-ahead clipper
04/07/1998US5737433 Sound environment control apparatus
04/07/1998US5737412 Portable telephone with a carrying strap
04/07/1998US5737374 Delay locked loop for use in a GPS signal receiver
04/07/1998US5737372 Code phase error system for generating code adjustment signals
04/07/1998US5737367 Transmission system with simplified source coding
04/07/1998US5737362 Delay-locked loop code tracking system for receiver of a code spread communication system
04/07/1998US5737361 Receiver in a direct-sequence spread-spectrum communication system using a window filter
04/07/1998US5737360 System employing continuous-time dissipative pseudorandom dynamics for communications and measurement
04/07/1998US5737358 Multiplexed radio communication system
04/07/1998US5737329 Spread spectrum communication apparatus
04/07/1998US5737323 Radio telephone
04/07/1998US5737252 Circuit arrangement comprising a permutation unit and method of processing a batch of items
04/07/1998US5736965 Compact radio frequency transmitting and receiving antenna and control device employing same
04/07/1998US5736943 Method for determining the type of coding to be selected for coding at least two signals
04/07/1998US5736931 Remote control system for electronic devices
04/07/1998US5736893 Digital method and apparatus for reducing EMI emissions in digitally-clocked systems
04/07/1998US5736793 Control system for electrical components of a motor vehicle
04/07/1998CA2085686C Method and circuit for saving the power of a battery used in a portable radio telephone
04/05/1998CA2231610A1 Remote data acquisition system
04/02/1998WO1998014023A1 Configurable digital wireless and wired communications system architecture
04/02/1998WO1998014005A1 Multiple modulation format television signal receiver system
04/02/1998WO1998013981A1 Auxiliary component connector including microphone channel
04/02/1998WO1998013980A1 Upper closure of a portable telephone and method of producing the upper closure of the portable telephone
04/02/1998WO1998013952A2 A base station receiver and a method for receiving a signal
04/02/1998WO1998013947A1 A signal correlation technique for a spread spectrum receiver to reduce multipath errors
04/02/1998WO1998013945A1 Base station for a mobile radio telephone system
04/02/1998WO1998013944A1 Homodyne cellular base station
04/02/1998WO1998013943A1 Method and apparatus for detecting and cancelling unwanted transmitter modulation
04/02/1998WO1998013932A1 Branch filter and shared device and 2-frequency band mobile communication apparatus using the branch filter
04/02/1998DE19640068A1 Destination finder for vehicle
04/02/1998DE19639796A1 Separate alarm unit for mobile telecommunication apparatus
04/02/1998DE19639188A1 Base station for mobile communications system
04/02/1998DE19639171A1 Suppressing noise signals, esp. for remote controller of motor vehicle immobiliser or central locking system
04/02/1998DE19638482A1 Verfahren zur Auswahl einer Sendefrequenz A method for selecting a transmission frequency
04/02/1998DE19637383A1 Data collection and evaluation apparatus for single elderly person
04/02/1998CA2267372A1 Homodyne cellular base station
04/02/1998CA2266498A1 A signal correlation technique for a spread spectrum receiver to reduce multipath errors