| Patents for H04B 14 - Transmission systems not characterised by the medium used for transmission (7,274) |
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| 01/29/2004 | US20040017518 High-resolution image projection |
| 01/29/2004 | DE19882753B4 Hintergrundrauschen-Kontrastreduzierung für Umschaltungen mit einer Änderung der Sprachcoder Background noise reduction for switching contrast with a change of voice coder |
| 01/28/2004 | CN1471079A Transmission line encoding method, transmission line clecoding method and apparatus thereof |
| 01/28/2004 | CN1136747C Communication method transmission and reception apparatuses, and cellular radio communication system |
| 01/27/2004 | US6683548 Analog isolation system with digital communication across a capacitive barrier |
| 01/22/2004 | WO2004008652A1 Method and system for vocoder bypass using electronic serial numbers |
| 01/22/2004 | WO2004008435A1 Transmission device, transmission method, reception device, reception method, transmission/reception device, communication device, communication method, recording medium, and program |
| 01/22/2004 | WO2004008317A2 Apparatus and method to reduce quantization error |
| 01/22/2004 | US20040014505 Method of saving power by reducing active reception time in standby mode |
| 01/21/2004 | EP1116348B1 Tandem audio compression |
| 01/21/2004 | CN1469662A Adaptive modulation coding equipment for mobile communication system and method thereof |
| 01/21/2004 | CN1469652A Emission diversity equipment for mobile communication system and method thereof |
| 01/21/2004 | CN1135759C Method for evaluating the hangover period in a speech decoder, a speech encoder and a transceiver |
| 01/21/2004 | CN1135529C Communication network for transmitting speech signals |
| 01/21/2004 | CN1135486C Digital audio signal processing equipment and digital audio signal processing method |
| 01/20/2004 | US6681209 Method and an apparatus for sampling-rate conversion of audio signals |
| 01/15/2004 | US20040008791 Apparatus and method to reduce quantization error |
| 01/15/2004 | US20040008768 Transmission line coding method, transmission line decoding method, and apparatus therefor |
| 01/14/2004 | EP1381179A1 Method and apparatus for unequal error protection |
| 01/14/2004 | CN1467919A Transmitting circuit device and wireless communications device |
| 01/14/2004 | CN1135003C Equipment and method for filtering speech signal, receiver and telephone communication system |
| 01/14/2004 | CN1134928C Method for control of error of wide-band radio communication link layer |
| 01/14/2004 | CN1134762C Sound coding device and sound coding method |
| 01/08/2004 | WO2004004365A2 Method and apparatus for forward link gain control in a power controlled repeater |
| 01/08/2004 | US20040005012 Information transmission apparatus, information transmission method, information reception apparatus, and information reception method |
| 01/08/2004 | CA2490086A1 Method and apparatus for forward link gain control in a power controlled repeater |
| 01/07/2004 | CN1466855A Method for defining the coding for useful information generated according to different coding laws between at least two subscriber terminals |
| 01/07/2004 | CN1466281A E1,T1 fault comprehensive imitation device |
| 01/07/2004 | CN1134159C Embedding supplemental data in an information signal |
| 01/02/2004 | EP1376876A2 Wireless user terminal and system having high speed, high resolution, digital-to-analog converter with off-line sigma delta conversion and storage |
| 01/01/2004 | US20040001464 Method and apparatus for forward link gain control in a power controlled repeater |
| 12/31/2003 | WO2004002096A1 Clock extraction circuit for use in a linearly expandable broadcast router |
| 12/31/2003 | WO2004002001A2 Ultra-wideband communication through a wire medium |
| 12/31/2003 | CN1465059A Method and apparatus for reducing the word length of a digital input signal and method and apparatus for recovering the digital input signal |
| 12/31/2003 | CA2485283A1 Ultra-wideband communication through a wire medium |
| 12/30/2003 | US6671325 Wireless infrared digital audio system |
| 12/30/2003 | US6671292 Method and system for adaptive voice buffering |
| 12/25/2003 | US20030235236 Ultra-wideband communication through a wired medium |
| 12/24/2003 | CN1463496A Sub-band adaptive differential pulse code modulation/encoding appts. its method, wireless transmission system and wirel |
| 12/24/2003 | CN1132366C Method of identifying and eliminating frame in digital data trasmission system |
| 12/24/2003 | CN1132151C Multi-channel sound decoder |
| 12/24/2003 | CN1132150C System and methods for communication desived audio information over communications medium |
| 12/23/2003 | US6668029 Methods and apparatus for implementing digital resampling circuits |
| 12/18/2003 | WO2003014812A3 Semiconductor structures and polarization modulator devices |
| 12/18/2003 | US20030231706 Adaptive modulation coding system and method in a mobile communication network |
| 12/17/2003 | EP1372282A2 Transmitting circuit device and wireless communications device |
| 12/17/2003 | EP1125286B1 Perceptual weighting device and method for efficient coding of wideband signals |
| 12/17/2003 | CN1462509A Increment summation fractional-N frequency divider with improved noise and spur performance |
| 12/17/2003 | CN1131508C Transmission system comprising at least a coder |
| 12/16/2003 | US6664913 Lossless coding method for waveform data |
| 12/11/2003 | US20030228850 Transmit diversity apparatus for mobile communication system and method thereof |
| 12/10/2003 | EP1368896A1 Sigma delta fractional-n frequency divider with improved noise and spur performance |
| 12/10/2003 | EP1367934A2 Devices, systems and methods for endocardial pressure measurement |
| 12/10/2003 | CN1461469A ADPCM speech coding system with phase-smearing and phase-desmearing filters |
| 12/09/2003 | US6662339 Error screening based on code and control information consistency in a communication system |
| 12/09/2003 | US6661847 Systems methods and computer program products for generating and optimizing signal constellations |
| 12/03/2003 | CN1460247A ADPCM speech coding system with specific step-size adaptation |
| 12/03/2003 | CN1459935A Code length automatic regulating coding and decoding device and method |
| 12/03/2003 | CN1130050C Digital signal processing method and apparatus |
| 12/02/2003 | US6658378 Decoding method and apparatus and program furnishing medium |
| 12/02/2003 | CA2118916C Process for reducing data in the transmission and/or storage of digital signals from several dependent channels |
| 11/27/2003 | WO2003098916A2 High-resolution image projection |
| 11/27/2003 | US20030219075 Method and apparatus of signal compression using adaptive pulse code modulation with frame width adjustment means |
| 11/27/2003 | US20030219038 Recording and producing an MPEG information signal on/from a record carrier |
| 11/26/2003 | CN1129243C Cellular communication system with multiple code rates |
| 11/25/2003 | US6654723 Transmission system with improved encoder and decoder that prevents multiple representations of signal components from occurring |
| 11/25/2003 | US6654339 Synchronization symbol structure using OFDM based transmission method |
| 11/19/2003 | EP1363273A1 A speech communication system and method for handling lost frames |
| 11/19/2003 | CN1128447C Automatic equalization system |
| 11/13/2003 | US20030210746 Radio transmission frequency digital signal generation |
| 11/12/2003 | EP1360845A1 Method for defining the coding for useful information generated according to different coding laws between at least two subscriber terminals |
| 11/12/2003 | CN1127820C Arrangement and methods for generating radio frequency signal |
| 11/12/2003 | CN1127801C Apparatus for performing a non-integer sampling rate change in a multichannel polyphase filter |
| 11/11/2003 | US6647064 ADPCM encoding apparatus, ADPCM decoding apparatus and delay circuit |
| 11/11/2003 | US6647063 Information encoding method and apparatus, information decoding method and apparatus and recording medium |
| 11/11/2003 | US6647023 Voice coding conversion circuit between office exchange and ISDN keyphone system |
| 11/05/2003 | EP1359748A1 Data processor |
| 11/05/2003 | EP0658263B1 Improved vector quantization |
| 11/05/2003 | CN1127055C Perceptual weighting device and method for efficient coding of wideband sound signals and cellular communication system |
| 11/04/2003 | US6643339 Receiver and receiving method |
| 10/30/2003 | US20030202609 Code rate adaptive encoding/decoding arrangement and method for a pulse code modulation system |
| 10/30/2003 | US20030202600 Frequency thinning apparatus for thinning out frequency components of signal and frequency thinning apparatus |
| 10/29/2003 | EP1356459A2 Method and apparatus for interoperability between voice transmission systems during speech inactivity |
| 10/29/2003 | EP1356454A1 Wideband signal transmission system |
| 10/29/2003 | CN1126320C Sample rate converter |
| 10/28/2003 | US6639946 Sigma delta modulator with SAW filter |
| 10/21/2003 | US6636829 Speech communication system and method for handling lost frames |
| 10/21/2003 | US6636573 Precision timing generator system and method |
| 10/21/2003 | US6636567 Method of specifying non-allowable pulse characteristics |
| 10/21/2003 | US6636566 Method and apparatus for specifying pulse characteristics using a code that satisfies predefined criteria |
| 10/21/2003 | US6636165 Device and method for conversion of sampling rate |
| 10/16/2003 | WO2003030581A3 Telemetry of analog and digital data |
| 10/15/2003 | EP1353461A1 Analog filter |
| 10/15/2003 | CN1449613A A modulation technique providing high data rate through band limited channels |
| 10/14/2003 | CA2235521C Digital-to-analog communication device and method |
| 10/14/2003 | CA2174343C Method and apparatus for the transmission of variable rate digital data |
| 10/08/2003 | CN1123866C Voice coding/decoding method and appts. for same |
| 10/07/2003 | US6631139 Method and apparatus for interoperability between voice transmission systems during speech inactivity |
| 10/02/2003 | WO2002080370A3 Oversampling in analogue-digital and digital-analogue converters |
| 10/02/2003 | US20030185418 Embedding and extracting supplemental data in an information signal |