Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › 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
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)
03/1995
03/15/1995EP0643494A1 Radio receiver
03/15/1995EP0643481A1 Radio frequency filter
03/15/1995EP0643480A1 Impulse noise suppression circuit for a multiplex signal
03/15/1995EP0643476A1 Direct conversion receiver
03/15/1995EP0643436A1 Rotatable contactless antenna coupler and antenna
03/15/1995EP0642719A1 Process for reducing data in the transmission and/or storage of digital signals from several interdependent channels.
03/15/1995EP0642716A1 Circuit for deriving a signal dependent on the direction of change of the reception field intensity
03/15/1995EP0642715A1 Radio receiver with digital signal processing
03/15/1995EP0642714A1 Radio receiver with digital signal processing
03/15/1995EP0642713A1 Circuit for deriving a signal indicating interference in a received stereo multiplex signal
03/15/1995EP0642712A1 Circuit for deriving in a signal indicating interference in a received stereo multiplex signal
03/15/1995EP0489013B1 Radio and electronic card assembly
03/15/1995CN2192102Y Mobile telephone cell box night-vision device
03/15/1995CN1100246A Pager
03/15/1995CN1100245A Selective pager with displaying function
03/14/1995US5398261 Integrated circuit having controller impedances and application to transceivers, in particular for communication between units of a system
03/14/1995US5398036 Shortened mast antenna with compensating circuits
03/14/1995US5398023 Selective call receiver with flip-out display
03/14/1995US5397923 Device for remote control using wave energy
03/14/1995CA2123735A1 All digital maximum likelihood based spread spectrum receiver
03/14/1995CA2067324C Stretch and chirp waveform format for reduced generating and receiving hardware complexity
03/14/1995CA2040941C Method and device for going back to a normal link after using of a standby link in a data transmission system
03/14/1995CA2025485C Dual receiver apparatus for integrated paging and radiotelephone functions
03/10/1995EP0666007A4 Mobile communications device registration method.
03/09/1995WO1995007015A2 Method and apparatus of combining signals in a digital pipelined signal adder
03/09/1995WO1995006994A1 Tracking external power supply
03/09/1995WO1995006987A1 Code division multiplex transmitter/receiver
03/09/1995WO1995006984A1 Sub-band coder with differentially encoded scale factors
03/09/1995WO1995006983A1 A method for determining desired components of quadrature modulated signals
03/09/1995WO1995006982A1 Method for a communication unit to reduce power consumption during detection of valid data
03/09/1995DE4431998A1 Hearing aid system
03/09/1995DE4431172A1 Oszillatorschaltung und PLL-IC für einen Sendeempfänger Oscillator circuit and PLL IC for a transceiver
03/09/1995DE4329552A1 Mobile broadcast receiver
03/08/1995EP0642251A2 Method for the automatic switching of the speech direction and circuit arrangement for implementing the method
03/08/1995EP0642243A1 Rake receiver for CDMA system
03/08/1995EP0642229A1 Circuit for generating a variable line termination impedance
03/08/1995EP0642096A2 Arrangement for simultaneously interrogating a plurality of portable radio frequency communication devices
03/08/1995EP0641503A1 A method for repeaters to adaptively digitally code received analog information
03/08/1995EP0389559B1 Foldable radio housing
03/08/1995CN1099920A Method and system for the dynamic modification of control parameters in a transmitter power control system
03/08/1995CN1099918A Arrangement for duplex transmission
03/08/1995CN1027849C Reduce noise interference during handoff
03/08/1995CA2131273A1 Method and apparatus for reducing residual rf power in a transmitter/receiver antenna
03/07/1995US5396660 Method and apparatus for improving battery life in a portable communication receiver
03/07/1995US5396658 Radio frequency antenna and mixer array
03/07/1995US5396657 Selectable filter for reducing Gaussian noise, co-channel and adjacent channel interference in a radio-telephone receiver
03/07/1995US5396656 Method for determining desired components of quadrature modulated signals
03/07/1995US5396655 For cancelling an unwanted portion of a signal spectrum
03/07/1995US5396654 Data transfer method and apparatus having dual frequency operation
03/07/1995US5396652 Transmitting power control unit having a constant output level throughout a predetermined frequency band
03/07/1995US5396538 Contactless digital power transmission and reception system in a radio telephone
03/07/1995US5396520 Digital RF receiver
03/07/1995US5396519 Method and apparatus for adaptively providing precoding and preemphasis conditioning to signal data for transfer over a communication channel
03/07/1995US5396516 In a communication system
03/07/1995US5396515 Asymmetric spread spectrum correlator
03/07/1995US5396512 Port transceiver for providing communication between a signal transmitting and receiving machine and a space switch
03/07/1995US5396237 Device for subband coding with samples scanned across frequency bands
03/07/1995CA1334685C Multiplexed digital packet telephone system
03/07/1995CA1334682C Noise blanker with continuous wave interference compensation
03/02/1995WO1995006377A1 Method and apparatus for operating with a hopping control channel in a communication system
03/02/1995WO1995006368A1 Information transmission system and method of operation
03/02/1995WO1995006366A1 Radio receiving apparatus
03/02/1995WO1995006363A1 A method and a system for redundancy control of baseband channels in a telecommunications system
03/02/1995WO1995006362A1 Frequency reference compensation
03/02/1995WO1995006361A1 Dual-channel low current low noise block downconverter
03/02/1995WO1995006360A1 Apparatus for providing sound in vehicles
03/02/1995WO1995006309A1 Voice operated remote control system
03/02/1995DE4344239A1 Remote data terminal
03/02/1995DE4329499A1 Method and device for transmitting signals
03/02/1995DE4329320A1 Method and device for data transmission
03/02/1995DE4328523A1 Device for data transmission in low-voltage electrical systems
03/02/1995DE4328394A1 Self-programmable remote control
03/01/1995EP0641111A1 Device for bidirectional transmission of analog and/or digital signals
03/01/1995EP0641109A2 Code generating method for spread spectrum communication
03/01/1995EP0641102A2 Direct sequence - Code division multiple access receiver with multiuser interference canceller
03/01/1995EP0641100A2 Multiple access interference cancellation for CDMA demodulator
03/01/1995EP0641091A1 Apparatus using decision directed channel estimation in a digital mobile radio link
03/01/1995EP0641090A2 Antenna switching device
03/01/1995EP0641089A2 Portable radio apparatus having batteries for supplying a plurality of voltages
03/01/1995EP0641088A1 Wireless device
03/01/1995EP0640265A1 Transmission device for transmitting a wanted signal modulated on a carrier
03/01/1995EP0574523A4 Variable bit rate speech encoder.
03/01/1995EP0524264B1 Adaptive-block-length, adaptive-transform, and adaptive-window transform coder and decoder for high-quality audio
03/01/1995CN2190838Y Improved radio telephone set
03/01/1995CN1099544A 通信系统 Communications systems
03/01/1995CN1099537A Antenna change-over switch
03/01/1995CN1099535A Power circuit and radiocommunication apparatus using the power circuit
03/01/1995CN1027781C Audio levet equalization of broadcast FM and narrow frequency deviation FM radio signals
03/01/1995CA2131207A1 Remote data terminal
02/1995
02/28/1995US5394562 Power supply circuit for a two-mode vehicular radio receiver
02/28/1995US5394508 Method and apparatus for encoding decoding and compression of audio-type data
02/28/1995US5394473 Adaptive-block-length, adaptive-transforn, and adaptive-window transform coder, decoder, and encoder/decoder for high-quality audio
02/28/1995US5394436 Multi-hop data communication network
02/28/1995US5394434 Code-division multiple-access demodulator with improved interference cancelation
02/28/1995US5394433 Frequency hopping pattern assignment and control in multiple autonomous collocated radio networks
02/28/1995US5394162 Low-loss RF coupler for testing a cellular telephone
02/28/1995US5394160 Portable radio with coplanar ground and atenna conductive films formed on the inner surface of the case
02/28/1995US5394110 Demodulation system having adaptive matched filter and decision feedback equalizer
02/28/1995US5394036 Circuit and method of zero generation in a real-time filter
02/23/1995WO1995005714A1 Path gain estimation in a receiver
1 ... 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 ... 1886