Patents for H04B 14 - Transmission systems not characterised by the medium used for transmission (7,274) |
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02/18/2003 | US6522695 Transmitting device for transmitting a digital information signal alternately in encoded form and non-encoded form |
02/18/2003 | CA2245797C System and method for adaptive modification of modulated and coded schemes in a communication system |
02/13/2003 | WO2003013090A1 Simple encoding/decoding technique for code position modulation |
02/13/2003 | US20030031463 Recording and reproducing an MPEG information signal on/from a record carrier |
02/13/2003 | US20030031262 Recording of super-audio or like one-bit-per-sample signals on a PCM recorder |
02/12/2003 | EP0749647B1 Method and apparatus for determining a masked threshold |
02/12/2003 | CN1397115A 模拟滤波器 Analog filter |
02/11/2003 | US6518902 PC card and WLAN system having high speed, high resolution, digital-to analog converter with off-line sigma delta conversion and storage |
02/11/2003 | CA2258695C Method and device for coding an audio signal by "forward" and "backward" lpc analysis |
02/06/2003 | WO2003010929A1 Method and system for transmitting data from a first data network into a second data network |
02/06/2003 | WO2002041651A3 Methods and apparatus for identifying asset location in mobile co mmunication networks |
02/06/2003 | US20030027361 Including two or more processing units for processing wafers and a transferring unit for carrying the wafers |
02/06/2003 | CA2454274A1 Method and arrangement for transmission of data from a first data network to a second data network |
01/30/2003 | WO2003009589A1 Precision timing generator apparatus and associated methods |
01/30/2003 | WO2002041545A3 Wireless clock synchronization |
01/30/2003 | US20030023909 Interleave address generator |
01/30/2003 | US20030022651 Method and devices for transmitting and receiving information |
01/29/2003 | CN1394414A Communication system, communication control apparatus and method |
01/28/2003 | US6513055 Apparatus and method for data width reduction in automotive systems |
01/28/2003 | US6512472 Method and apparatus for optimizing dynamic range of a wideband analog-to-digital converter |
01/23/2003 | US20030016157 Time domain radio transmission system |
01/23/2003 | US20030016080 Apparatus for decoding receiving signal |
01/22/2003 | EP1278339A1 Method and apparatus for communicating data from a first to a second data network |
01/22/2003 | CN1393104A Signal transmitter and signal receiver |
01/22/2003 | CN1099777C Digital signal encoding device, its decoding device, and encoding method |
01/22/2003 | CN1099767C Method and device for compressing digital data |
01/21/2003 | US6510182 Wireless infrared digital audio system |
01/21/2003 | US6510180 Embedded software negotiation of PCM companding format |
01/16/2003 | US20030014460 Analog filter |
01/16/2003 | US20030012310 Receiver |
01/15/2003 | EP0965123B1 A high resolution post processing method for a speech decoder |
01/15/2003 | CN1391740A Method and apparatus for generating RF signal |
01/15/2003 | CN1099097C Method for encoding digital audio signal |
01/14/2003 | US6507299 Embedding supplemental data in an information signal |
01/14/2003 | CA2275828C Using discrete message-oriented services to deliver short audio communications |
01/09/2003 | WO2003003601A1 Method and apparatus for an optical cdma system |
01/09/2003 | US20030006916 Bit-rate converting apparatus and method thereof |
01/08/2003 | EP1274070A2 Bit-rate converting apparatus and method thereof |
01/08/2003 | EP0892974B1 Method and arrangement for reconstruction of a received speech signal |
01/07/2003 | US6505239 System for minimizing screen refresh time using selectable compression speeds |
01/03/2003 | WO2003001710A2 Upstream communication system with controllable band pass filter properties |
01/02/2003 | US20030002588 Method and apparatus for controlling buffer overflow in a communication system |
01/02/2003 | US20030001769 Time domain radio transmission system |
01/02/2003 | EP1271819A2 Transmission and reception of a first and a second main signal components |
01/02/2003 | EP1038379A4 System, device and method for pcm upstream transmission utilizing an optimized transmit constellation |
01/01/2003 | CN1388965A Audio signal compression |
01/01/2003 | CN1388964A Audio signal processing with adaptive noise-shaping modulation |
01/01/2003 | CN1388903A Method, system and apparatus for calibrating a pulse position modulation (PPM) decoder to a PPM signal |
01/01/2003 | CN1388654A Digital pulse interval-modulated power line carrier communication method and its transceiving method |
12/31/2002 | US6502069 Method and a device for coding audio signals and a method and a device for decoding a bit stream |
12/31/2002 | US6502068 Multipulse search processing method and speech coding apparatus |
12/31/2002 | US6501802 Digital silence for a PCM data communication system |
12/26/2002 | US20020196768 Code division multiple access mobile communication system |
12/25/2002 | CN1387131A Predictive parameter analyzing device and method |
12/24/2002 | US6499010 Perceptual audio coder bit allocation scheme providing improved perceptual quality consistency |
12/24/2002 | US6498833 Channel check test system |
12/19/2002 | WO2002065894A8 Endocardial pressure measurement |
12/18/2002 | EP0663093B1 Improved preprocessing and postprocessing for vector quantization |
12/18/2002 | CN1386332A Coding a data stream |
12/18/2002 | CN1386329A Coding a data stream |
12/12/2002 | US20020186792 Signal encoding for transmission of multiple digital signals over single physical medium |
12/10/2002 | CA2118355C Orthogonal polarization and time varying offsetting of signals for digital data transmission or reception |
12/05/2002 | WO2002098156A1 A method for enabling a subscriber entity to actively communicate in a communication network |
12/05/2002 | US20020184008 Prediction parameter analysis apparatus and a prediction parameter analysis method |
12/05/2002 | US20020184005 Speech coding system |
12/04/2002 | EP1262027A1 Method of differential coding and modulation |
12/03/2002 | US6490406 Recording and reproducing an MPEG information signal on/from a record carrier |
12/03/2002 | US6489908 Wireless local loop terminal and system having high speed, high resolution, digital-to-analog converter with off-line sigma-delta conversion and storage |
11/28/2002 | US20020176486 Spread spectrum transmission apparatus, spread spectrum reception apparatus, and spread spectrum communication system |
11/27/2002 | EP1261161A1 Error correcting communication method and communication apparatus to which this communication method is applied |
11/27/2002 | EP1260967A2 Prediction parameter analysis apparatus and a prediction parameter analysis method |
11/27/2002 | EP1260049A2 A modulation scheme for fdd/tdd transceivers |
11/27/2002 | EP1260039A2 Application of digital processing scheme for enhanced cable television network performance |
11/27/2002 | EP1259965A1 Sampling system with optimized sampling rate |
11/27/2002 | EP0786172B1 Transmission system, transmitter, receiver and transmission method |
11/27/2002 | CN1095254C Ultrawide-band communications system and method |
11/27/2002 | CN1095253C Encoding and decoding apparatus and method of wideband digital information signal |
11/26/2002 | US6487573 Multi-rate digital filter for audio sample-rate conversion |
11/26/2002 | US6487535 Multi-channel audio encoder |
11/21/2002 | WO2001020786A9 Group chain reaction encoder with variable number of associated input data for each output group code |
11/21/2002 | US20020173954 Adaptive media encoding and decoding equipment |
11/21/2002 | US20020173949 Speech coding system |
11/21/2002 | US20020173282 Wireless user terminal and system having high speed, high resolution, digital-to analog converter with off-line sigma delta conversion and storage |
11/21/2002 | US20020171571 PC card and wlan system having high speed, high resolution, digital-to analog converter with off-line sigma delta conversion and storage |
11/20/2002 | EP1258091A1 METHOD AND APPARATUS FOR ACHIEVING 180o PHASE INVARIANT TRANSMISSION IN A PCM MODEM SYSTEM |
11/20/2002 | CN1380655A Method and device for processing digital signal |
11/14/2002 | WO2002091588A1 Sub-band adaptive differential pulse code modulation/encoding apparatus, sub-band adaptive differential pulse code modulation/encoding method, wireless transmission system, sub-band adaptive differential pulse code modulation/decoding apparatus, sub-band adaptive differential pulse code modulation/decoding method, and wirel |
11/14/2002 | WO2002065458A3 Method and apparatus for interoperability between voice transmission systems during speech inactivity |
11/14/2002 | US20020169599 Digital audio compression and expansion circuit |
11/13/2002 | EP1257104A2 Heirarchical transmission with multicarrier modulation and error correction coding |
11/13/2002 | EP1257063A2 PC card and wlan system having high speed, high resolution, digital-to -analog converter with off-line sigma delta conversion and storage |
11/13/2002 | EP1256195A1 System and method for adjusting pcm data frames for robbed bit signaling in a telephone network |
11/13/2002 | EP1256111A1 Rate determination coding |
11/12/2002 | US6480552 Soft output metrics generation for symbol detectors |
11/12/2002 | US6480528 Automatic gain control for improved decoding of multi-carrier signal |
11/12/2002 | CA2118915C Process for reducing frequency interlacing during acoustic or optical signal transmission and/or recording |
11/07/2002 | US20020165631 Audio signal processing with adaptive noise-shaping modulation |
11/07/2002 | US20020163972 Method of selecting a PCM modem signal constellation in relation to channel impairments |
11/07/2002 | US20020163455 Audio signal compression |
11/06/2002 | EP1255358A2 Wireless local loop terminal and system having high speed, high resolution, digital-to-analog converter with off-line sigma delta conversion and storage |