Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › H04B 14 - Transmission systems not characterised by the medium used for transmission
Patents for H04B 14 - Transmission systems not characterised by the medium used for transmission (7,274)
06/2003
06/03/2003US6574349 Embedding and extracting supplemental data in an information signal
06/03/2003US6574283 Communication method, transmission and reception apparatuses, and cellular radio communication system
06/03/2003US6574281 Voice recording and playback mode using the G.726 half-rate within the personal handy phone system
05/2003
05/30/2003WO2002041545A9 Wireless clock synchronization
05/28/2003EP1314158A1 Method and apparatus for reducing the word length of a digital input signal and method and apparatus for recovering the digital input signal
05/28/2003EP0954849B1 A method and apparatus for audio representation of speech that has been encoded according to the lpc principle, through adding noise to constituent signals therein
05/27/2003US6570927 Method for tail-biting and decoding recursive systematic codes
05/27/2003US6570536 Communications system
05/27/2003US6570513 Isolation system with digital communication across a capacitive barrier
05/22/2003US20030095063 Time domain radio transmission system
05/21/2003EP1142170A4 Method and apparatus for interleaving in a communication system
05/21/2003EP0920762A4 Combined daq/rbs compensation system and method for enhancing the accuracy of digital data communicated through a network
05/21/2003CN1419341A Broadband digital signal coding/decoding equipment and method thereof
05/21/2003CN1109408C Method and apparatus for speech transmission in mobile communication system
05/20/2003US6567782 Portable information terminal, method of processing audio data, recording medium, and program
05/20/2003US6567020 Method and arrangement for reducing interference
05/15/2003WO2003001710A3 Upstream communication system with controllable band pass filter properties
05/15/2003US20030091183 Method and apparatus for isolation in a data access arrangement using analog encoded pulse signaling
05/14/2003EP0678226B1 Transmission and reception of a first and a second signal component
05/14/2003CN1418361A Wideband signal transmission system
05/07/2003EP1309144A1 Method and apparatus for isolation in a data access arrangement using analog encoded pulse signaling
05/07/2003EP0722634B1 Method and apparatus for speech transmission in a mobile communications system
05/06/2003US6559781 Device and method for sampling rate conversion
05/02/2003EP1021876A4 Signal processing method and device
05/01/2003WO2003036886A2 Method and system for transferring ip packets by aggregating multiple wireless communication channels for high data rate transfers
05/01/2003US20030083868 Voice coding method, voice coding apparatus, and voice decoding apparatus
05/01/2003US20030081690 Apparatus and method for transmitting/receiving data in a CDMA mobile communication system
05/01/2003US20030081582 Aggregating multiple wireless communication channels for high data rate transfers
05/01/2003CA2464409A1 Method and system for transferring ip packets by aggregating multiple wireless communication channels for high data rate transfers
04/2003
04/29/2003US6556590 Apparatus and methods for transmitting an MPEG-information signal and a method for reproducing that signal
04/24/2003WO2003034732A1 Interactive protocol for remote management of access control to scrambled data
04/24/2003WO2002084320A3 Method and system for increasing bit rate of digital messages in loran-c navigation systems
04/24/2003US20030076893 Transmitting device for transmitting a digital information signal alternately in encoded form and non-encoded form
04/23/2003EP1303958A2 Data transmission using pulse width modulation
04/23/2003EP1303916A1 Coding of a data stream
04/23/2003EP1303915A2 Coding a data stream
04/23/2003CN1412961A Warning circuit for losing real time detection signal and its implement method
04/17/2003WO2003032511A1 Code-select cdma modulation/demodulation method and device thereof
04/17/2003US20030074035 System and method for telemetry of analog and digital data
04/16/2003EP1301891A2 A speech communication system and method for handling lost frames
04/16/2003CN1411207A Communication apparatus
04/16/2003CN1106091C Noise reducing method, noise reducing apparatus and telephone set
04/16/2003CN1106083C Digital audio signal processing apparatus and method
04/15/2003US6549580 Subset averaged median predictor for differential pulse code modulation
04/15/2003US6549567 Full duplex ultrawide-band communication system and method
04/15/2003US6549523 Background noise contrast reduction for handovers involving a change of speech codec
04/15/2003CA2150926C Transmission system implementing different coding principles
04/10/2003WO2003030581A2 Telemetry of analog and digital data
04/10/2003WO2003030387A1 Apparatus and method for level-dependent companding for wireless audio noise reduction
04/10/2003WO2002065894A3 Endocardial pressure measurement
04/10/2003US20030069017 Method of blind transport format detection
04/10/2003US20030069009 Cellular communications channelizer
04/09/2003EP1300976A1 Method of blind transport format detection
04/09/2003EP1300958A2 Cellular communications channelizer
04/09/2003CN1409905A Method and device for transmitting data frames and method and device for adapting data rate
04/09/2003CN1409551A Peripheral device of portable audio-visual device and broadcast audio-visual system
04/08/2003US6546407 Reduced computation digital filter
04/08/2003US6546261 Method and apparatus for configuring communication apparatus in accordance with communication services and protocols
04/08/2003CA2078370C Cellular radio communications system
04/03/2003US20030065799 Communication device
04/03/2003US20030063024 Apparatus and method for level-dependent companding for wireless audio noise reduction
04/02/2003EP1298643A1 Frequency interpolating device and frequency interpolating method
04/02/2003CN1407834A Method for realizing transmission of time division multichannel pulse modified signals in ether network
04/01/2003US6542551 Translation table and constellation design for a PCM modem subjected to alternating robbed bit signaling
03/2003
03/27/2003WO2003026260A1 Process, arrangement, devices for seizure of a shared telephone line
03/27/2003WO2003026242A1 A digital implementation of multi-channel demodulators
03/27/2003US20030059197 Peripheral for portable viewing apparatus and broadcasting viewing system
03/26/2003EP1219034B1 Method and device for channel encoding in an information transfer system
03/26/2003EP1131972B1 Method and arrangement for optimal scheduling of slotted-mode related measurements in a cellular radio system
03/26/2003CN1406421A A modulation scheme for FDD/TDD transceivers
03/26/2003CN1406418A Application of digital processing scheme for enhanced cable television dnetwork performance
03/26/2003CN1405984A Comunication method of high data-rate wireless local network
03/25/2003US6539061 Efficient method for decompressing difference coded signals
03/20/2003WO2000031719A3 Speech coding with comfort noise variability feature for increased fidelity
03/20/2003US20030056221 Digital implementation of multi-channel demodulators
03/20/2003US20030053548 Wireless infrared digital audio system
03/20/2003EP1145222A3 Speech coding with comfort noise variability feature for increased fidelity
03/19/2003EP1292846A2 Method, system and apparatus for calibrating a pulse position modulation (ppm) decoder to a ppm signal
03/13/2003WO2003021793A1 Information transmission apparatus, information transmission method, information reception apparatus, and information reception method
03/12/2003EP1290803A1 Multiplexing-interleaving and demultiplexing-deinterleaving
03/12/2003CN1402910A Method and arrangement for implementing intra-frame interleaving
03/12/2003CN1103093C Processing of speech coder parameters
03/11/2003US6532564 Encoder for multiplexing blocks of error protected bits with blocks of unprotected bits
03/11/2003US6532443 Reduced length infinite impulse response weighting
03/11/2003US6532226 Method and arrangement for optimal scheduling of slotted-mode related measurements in a cellular radio system
03/06/2003WO2002041504A3 Methods and apparatus for identifying asset location in communication networks
03/06/2003US20030045312 Linear phase compander for FM broadcast
03/06/2003US20030043931 Ultrawide-band communication system and method
03/05/2003EP1289157A1 Linear phase compander for FM broadcast
03/05/2003CN1401177A Receiver
03/05/2003CN1401115A Rate determination coding
02/2003
02/27/2003US20030041195 Communication system and communication control apparatus and method
02/26/2003CN1102328C 移动电话装置 Mobile telephone device
02/20/2003WO2003014812A2 Semiconductor structures and polarization modulator devices
02/20/2003US20030035489 Simple encoding/decoding technique for code position modulation
02/19/2003EP0691054B1 Efficient transcoding device and method
02/19/2003CN1398464A Method and appts. for achieving 180 & deg; phase invariant transmission in PCM modem system
02/19/2003CN1398463A System and method for adjusting PCM data frames for robbed bit signaling in telephone network
02/19/2003CN1398099A Sound data transmitting system and method and transmitting servicer and user's terminal
02/19/2003CN1102000C Speech decoding method and speech decoder
1 ... 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 ... 73