Patents for H04B 14 - Transmission systems not characterised by the medium used for transmission (7,274) |
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12/12/2001 | CN1326269A Transmitting system for carrying different encoding principles |
12/11/2001 | US6330247 Communication protocol between a communication device and an external accessory |
12/11/2001 | US6329937 Robust data communications using multiple spectral images |
12/06/2001 | WO2001093467A1 Analog-to-digital converter infidelity estimation and correction system for a pcm modem system |
12/06/2001 | WO2001052411A3 Generating coefficients for a prediction filter in an encoder |
12/05/2001 | EP0669026B1 Method and apparatus for erasing bad frames of information in a communication system |
12/05/2001 | CN1325604A Method and arrangement for optimal scheduling of slotted mode related measurements in a cellular radio system |
12/04/2001 | US6327562 Method and device for coding an audio signal by “forward” and “backward” LPC analysis |
11/29/2001 | US20010045901 Optimized sampling rate |
11/28/2001 | EP1157475A1 DISTINGUISHING RECEIVED A-LAW AND $g(m)-LAW SIGNALS IN A PCM MODEM |
11/28/2001 | EP1157375A1 Celp transcoding |
11/28/2001 | CN1324513A Apparatus for performing a non-integer sampling rate change in a multichannel polyphase filter |
11/28/2001 | CN1324204A Variable-speed data circuit multiplex device having direct linkage passage function |
11/27/2001 | US6324260 Channel check test system |
11/22/2001 | US20010043655 Method and device for adaptive differential pulse code modulation |
11/20/2001 | US6320520 Information additive group code generator and decoder for communications systems |
11/15/2001 | US20010040702 Apparatus and method for supporting analog fax calls in a tandem configuration |
11/14/2001 | EP1154608A2 Multiresolution receiver |
11/14/2001 | EP1153489A1 Constellation design for a pcm modem |
11/14/2001 | CN1074846C Method for generating spectral noise weighting filter for use in speech coder |
11/13/2001 | US6317457 Pulse density modulator |
11/13/2001 | CA2229240C Lsp prediction coding utilizing a predetermined best prediction matrix based upon past frame information |
11/08/2001 | WO2001020892A3 A method for transmitting data between respective first and second modems in a telecommunications system, and a telecommunications system |
11/08/2001 | US20010039638 Turbodecoding method with re-encoding of erroneous information and feedback |
11/07/2001 | EP1152542A1 Turbodecoding method with re-encoding of erroneous information and feedback |
11/07/2001 | EP1151545A1 Communication protocol between a communication device and an external accessory |
11/07/2001 | CN1321008A System and method for reducing voice delay and improving voice quality using semi-voice block |
11/01/2001 | WO2001082489A1 Multiplexing-interleaving and demultiplexing-deinterleaving |
10/31/2001 | EP1074088B1 Method for converting the sampling rate |
10/31/2001 | CN1319974A Improved method for decode uplink state mark |
10/30/2001 | US6310906 Chaotic carrier pulse position modulation communication system and method |
10/30/2001 | CA2221910C System and method for spread spectrum code position modulation and wireless local area network employing the same |
10/25/2001 | US20010033621 Method of differential coding and modulation |
10/25/2001 | US20010033616 Generating coefficients for a prediction filter in an encoder |
10/24/2001 | EP1147613A1 Method for transmitting source encoded digital signals |
10/24/2001 | CN1319276A Variable order SIGMA-DELTA modulator |
10/24/2001 | CN1319229A Portable information terminal, method of processing audio data, recording medium, and program |
10/24/2001 | CN1318918A Orthogonal frequency-division multiplex transmitting apparatus and method |
10/18/2001 | US20010030940 Method and apparatus for digital channelisation and de-channelisation |
10/17/2001 | EP1146679A2 Variable bit rate digital circuit multiplication equipment with tandem passthrough function |
10/17/2001 | EP1145222A2 Speech coding with comfort noise variability feature for increased fidelity |
10/17/2001 | CN2454991Y Multi-element coding-decoding telecontrol device |
10/17/2001 | CN1317889A 接收装置 Receiver |
10/16/2001 | US6304623 Precision timing generator system and method |
10/13/2001 | CA2307473A1 The tachyon transceiver |
10/11/2001 | US20010029450 Variable bit rate digital circuit multiplication equipment with tandem passthrough function |
10/11/2001 | US20010028684 Multilevel coding with unequal error protection and time diversity for bandwidth efficient transmission |
10/10/2001 | EP1143678A2 Synchronisation in a multicarrier broadcast receiver |
10/10/2001 | EP1143653A2 Multilevel coding with unequal error protection and time diversity for bandwidth efficient transmission |
10/10/2001 | EP1142170A1 Method and apparatus for interleaving in a communication system |
10/10/2001 | CN1317169A Digital reception with radio frequency sampling |
10/09/2001 | CA2199760C A transmission system for digital audio broadcasting |
10/04/2001 | WO2001024549A3 Voice over pcm technique providing compatibility between pcm data and lower rate vocoder data |
10/04/2001 | EP1139689A2 Hand-off processing apparatus and method for telecommunication system |
10/04/2001 | EP1139614A1 Improved method of decoding uplink status flags for RT-EGPRS users |
10/04/2001 | EP1139289A2 Improved vector quantization |
10/03/2001 | CN1316129A Control of variable gain amplifier with delta sigma modulator D/A converter |
10/03/2001 | CN1072417C Direct phase digitizing apparatus and method |
10/02/2001 | US6298091 Method to play audio and video clips through MPEG decoders |
10/02/2001 | US6297755 Analog isolation system with digital communication across a capacitive barrier |
09/28/2001 | CA2337709A1 Improved method of decoding uplink status flags for rt-egprs users |
09/27/2001 | US20010025242 Error concealment method with pitch change detection |
09/26/2001 | EP1135909A1 Systems and methods for receiving a modulated signal containing encoded and unencoded bits using multi-pass demodulation |
09/26/2001 | EP1135871A1 Demultiplexer for channel interleaving |
09/26/2001 | EP1025646B1 Methods and devices for encoding audio signals and methods and devices for decoding a bit stream |
09/26/2001 | EP0707761B1 Arrangement for determining a signal spectrum of a wideband digital signal and for deriving bit allocation information in response thereto |
09/25/2001 | US6295316 Automatic equalization system |
09/20/2001 | WO2001069794A1 Interleave address generator |
09/19/2001 | EP1134926A2 Variable encoding levels for encoding of in-band control messages in wireless telecommunication systems |
09/19/2001 | EP0864146A4 Multi-channel predictive subband coder using psychoacoustic adaptive bit allocation |
09/18/2001 | US6292777 Phase quantization method and apparatus |
09/18/2001 | US6292477 Code division multiple access mobile communication system |
09/13/2001 | WO2001067618A1 Method and apparatus for decoding |
09/12/2001 | EP1132891A1 Voice encoder, voice decoder, and voice encoding and decoding method |
09/12/2001 | EP1131972A1 Method and arrangement for optimal scheduling of slotted-mode related measurements in a cellular radio system |
09/12/2001 | CN1312987A Method and system for digital channelisation and de-channelisation |
09/12/2001 | CN1312977A Scalable audio coder and decoder |
09/12/2001 | CN1312976A System and method of masking quantization noise of audio signals |
09/12/2001 | CN1312974A System and method for entropy ercoding quantized transform coefficients of a sigral |
09/11/2001 | US6289311 Sound synthesizing method and apparatus, and sound band expanding method and apparatus |
09/11/2001 | CA2331611C Multi-channel predictive subband coder using psychoacoustic adaptive bit allocation |
09/07/2001 | WO2001065732A2 Application of digital processing scheme for enhanced cable television network performance |
09/07/2001 | WO2001065702A2 A modulation scheme for fdd/tdd transceivers |
09/07/2001 | WO2001041314A8 Method and arrangement for implementing intra-frame interleaving |
09/07/2001 | WO2000048170A9 Celp transcoding |
09/07/2001 | CA2400150A1 Application of digital processing scheme for enhanced cable television network performance |
09/05/2001 | EP1130838A2 Transmission rate matching apparatus and method thereof for next generation mobile communication system |
09/05/2001 | CN1070666C Clock recovery circuit and method |
09/04/2001 | US6285888 Mobile telephone arranged to receive and transmit digital data samples of encoded speech |
08/30/2001 | US20010017901 Transmission rate matching apparatus and method for next generation mobile communication system |
08/29/2001 | EP0962015B1 Method and devices for coding discrete signals or for decoding coded discrete signals |
08/29/2001 | CN1070322C Method and arrangement for transmitting speech signals |
08/28/2001 | US6281988 Apparatus and method for supporting analog fax calls in a tandem configuration |
08/23/2001 | US20010016817 CELP-based to CELP-based vocoder packet translation |
08/23/2001 | US20010016052 Method for encoding bits in a signal |
08/22/2001 | EP1125363A1 Apparatus for performing a non-integer sampling rate change in a multichannel polyphase filter |
08/22/2001 | EP1125286A1 Perceptual weighting device and method for efficient coding of wideband signals |
08/22/2001 | EP1125285A1 Periodicity enhancement in decoding wideband signals |
08/22/2001 | EP1125284A1 High frequency content recovering method and device for over-sampled synthesized wideband signal |
08/22/2001 | EP1125282A1 Transmission system with improved encoder and decoder |