| Patents for H04B 14 - Transmission systems not characterised by the medium used for transmission (7,274) |
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| 08/11/1998 | US5793754 Two-way, two-wire analog/digital communication system |
| 08/11/1998 | US5793315 Bit-serial digital expandor |
| 08/05/1998 | EP0856960A1 Reception data expander |
| 08/05/1998 | EP0500159B1 Transmission system, and receiver to be used in the transmission system |
| 08/05/1998 | CN1189911A Method to evaluate the hangover period in a speech decorder in discontinuous transmission, and a speech encoder and a transceiver |
| 07/29/1998 | EP0855699A2 Multipulse-excited speech coder/decoder |
| 07/29/1998 | CN1039370C Discrete-time signal processing system |
| 07/28/1998 | US5787388 Frame-count-dependent smoothing filter for reducing abrupt decoder background noise variation during speech pauses in VOX |
| 07/28/1998 | US5787119 Transmission system for digitized voice signals and coder/decoder circuit for such a system |
| 07/28/1998 | US5787113 Mitigating clipping and quantization effects in digital transmission systems |
| 07/28/1998 | CA2092495C Communication system |
| 07/21/1998 | US5784533 Arrangement for determining a signal spectrum of a wideband digital signal and for deriving bit allocation information in response thereto |
| 07/21/1998 | US5784457 Multimedia communication apparatus and method with audio codec selection and audio mating when setting codes |
| 07/15/1998 | EP0853383A2 Re-sampling circuit and associated method |
| 07/15/1998 | EP0852853A1 Cellular communication system with multiple code rates |
| 07/15/1998 | CN1187665A Speech analysis method and speech encoding method and apparatus thereof |
| 07/14/1998 | US5781882 Very low bit rate voice messaging system using asymmetric voice compression processing |
| 07/14/1998 | US5781586 Method and apparatus for encoding the information, method and apparatus for decoding the information and information recording medium |
| 07/14/1998 | US5781570 Error processing method of ADPCM voice transmission system and apparatus therefor |
| 07/08/1998 | EP0852375A1 Speech coder methods and systems |
| 07/07/1998 | US5777999 Coded signal decoding circuit, and synchronous control method for the same, synchronous detecting method, and synchronization detecting circuit therefor |
| 07/07/1998 | US5777992 Decoder for decoding and encoded digital signal and a receiver comprising the decoder |
| 07/02/1998 | WO1998028936A1 Detection of speech channel back-looping |
| 07/01/1998 | EP0851603A2 System and method for spread spectrum code position modulation and wireless local area network employing the same |
| 07/01/1998 | EP0851407A2 Method for restoring speech data in speech codec |
| 06/30/1998 | US5774844 Methods and apparatus for quantizing, encoding and decoding and recording media therefor |
| 06/24/1998 | EP0849724A2 High quality speech coder and coding method |
| 06/18/1998 | WO1998026519A1 Phase shift encoded subchannel |
| 06/18/1998 | CA2272084A1 Phase shift encoded subchannel |
| 06/17/1998 | EP0848374A2 A method and a device for speech encoding |
| 06/17/1998 | CN1185247A Full duplex ultrawide-band communication system and method |
| 06/16/1998 | US5768534 Method and device for compressing digital data |
| 06/16/1998 | US5768314 Communications system |
| 06/16/1998 | CA2110645C Method of and device for quantizing excitation gains in speech coders based on analysis-by-synthesis techniques |
| 06/10/1998 | EP0846405A1 Process for reducing redundancy during the coding of multichannel signals and device for decoding redundancy-reduced multichannel signals |
| 06/09/1998 | US5765128 Apparatus for synchronizing a voice coder and a voice decoder of a vector-coding type |
| 06/09/1998 | US5765126 Method and apparatus for variable length encoding of separated tone and noise characteristic components of an acoustic signal |
| 06/09/1998 | US5764900 System and method for communicating digitally-encoded acoustic information across a network between computers |
| 06/09/1998 | US5764697 Transmitter for a radio control device |
| 06/09/1998 | US5764113 Re-sampling circuit and modulator using same |
| 06/03/1998 | EP0845866A2 Signal processors |
| 06/03/1998 | EP0418396B1 Video/audio multiplex transmission system |
| 06/03/1998 | CN1038633C Method and apparatus for noise burst detection in signal processor |
| 06/02/1998 | US5761642 Device for recording and /or reproducing or transmitting and/or receiving compressed data |
| 06/02/1998 | US5761218 Method of and apparatus for interpolating digital signal, and apparatus for and methos of recording and/or playing back recording medium |
| 05/26/1998 | US5757938 High efficiency encoding device and a noise spectrum modifying device and method |
| 05/26/1998 | US5757434 Motion-compensated predictive encoder in which groups of pictures are each encoded with substantially the same number of bits |
| 05/26/1998 | CA2067379C Process for transmitting a signal |
| 05/20/1998 | EP0843302A2 Voice coder using sinusoidal analysis and pitch control |
| 05/20/1998 | EP0842509A1 Method and apparatus for generating and encoding line spectral square roots |
| 05/20/1998 | EP0756788A4 Parameter sampling apparatus |
| 05/19/1998 | US5754733 Method and apparatus for generating and encoding line spectral square roots |
| 05/19/1998 | US5754594 Cooperative feedback system and method for a compensation system associated with a transmitter or codec |
| 05/19/1998 | US5754592 Method and apparatus for randomized oversampling |
| 05/19/1998 | US5754427 Data recording method |
| 05/14/1998 | WO1998020423A1 System and method for communicating digitally-encoded acoustic information across a network between computers |
| 05/13/1998 | EP0841656A2 Method and apparatus for speech and audio signal encoding |
| 05/12/1998 | US5752224 Information encoding method and apparatus, information decoding method and apparatus information transmission method and information recording medium |
| 05/12/1998 | US5751902 Adaptive prediction filter using block floating point format and minimal recursive recomputations |
| 05/12/1998 | US5751771 Waveform data compression apparatus and waveform data expansion apparatus |
| 05/06/1998 | CN1181167A Transmission system having receiver for recovering words from sequence of symhols |
| 04/29/1998 | EP0838752A2 Communication device |
| 04/28/1998 | US5745524 Self-initialized coder and method thereof |
| 04/28/1998 | CA2132006C Method for generating a spectral noise weighting filter for use in a speech coder |
| 04/22/1998 | EP0837453A2 Speech analysis method and speech encoding method and apparatus |
| 04/22/1998 | EP0673576A4 Apparatus for and method of speech digitizing. |
| 04/22/1998 | EP0641503A4 A method for repeaters to adaptively digitally code received analog information. |
| 04/22/1998 | CN1179662A Pattern matching apparatus |
| 04/16/1998 | WO1998015946A1 Systems and methods for communicating desired audio information over a communications medium |
| 04/16/1998 | WO1998015945A1 Variable length audio coding using a plurality of subband bit allocation patterns |
| 04/16/1998 | CA2267764A1 Variable length audio coding using a plurality of subband bit allocation patterns |
| 04/16/1998 | CA2267595A1 Systems and methods for communicating desired audio information over a communications medium |
| 04/15/1998 | CN1179225A Method and apparatus for detection and bypass of tandem vocoding |
| 04/15/1998 | CN1179041A Vorsh QPSK sheet modulating equipment for porducing signal waveform |
| 04/14/1998 | US5740317 For source coding digitized audio signals |
| 04/08/1998 | EP0746910A4 Modem-channel bank converter |
| 04/08/1998 | CN1178616A Process for monitoring quantisation quality in digital data |
| 04/07/1998 | US5737721 Predictive technique for signal to mask ratio calculations |
| 04/07/1998 | US5737367 Transmission system with simplified source coding |
| 04/07/1998 | US5737343 Circuit for localizing errors in Reed-Solomon decoders |
| 04/02/1998 | WO1998013941A1 Method and apparatus for detecting bad data packets received by a mobile telephone using decoded speech parameters |
| 04/02/1998 | CA2265640A1 Method and apparatus for detecting bad data packets received by a mobile telephone using decoded speech parameters |
| 04/01/1998 | EP0833478A2 Pattern matching apparatus |
| 04/01/1998 | EP0833305A2 Low bit-rate pitch lag coder |
| 03/31/1998 | US5734683 Demodulation of an intermediate frequency signal by a sigma-delta converter |
| 03/31/1998 | US5734679 Voice signal transmission system using spectral parameter and voice parameter encoding apparatus and decoding apparatus used for the voice signal transmission system |
| 03/31/1998 | US5734677 Method for compression of loss-tolerant video image data from multiple sources |
| 03/31/1998 | US5734647 CDMA communication system in which interference removing capability is improved |
| 03/25/1998 | EP0830755A1 Fast locking mechanism for channelized ultrawide-band communications |
| 03/25/1998 | EP0750811B1 Process for coding a plurality of audio signals |
| 03/24/1998 | US5732390 Speech signal transmitting and receiving apparatus with noise sensitive volume control |
| 03/24/1998 | US5732389 Voiced/unvoiced classification of speech for excitation codebook selection in celp speech decoding during frame erasures |
| 03/24/1998 | US5732356 Method and an arrangement for sound reconstruction during erasures |
| 03/24/1998 | US5732124 Apparatus and method for detecting the status of a PCM channel |
| 03/19/1998 | WO1998011683A1 Arrangements and methods for generating a radio frequency signal |
| 03/10/1998 | US5727023 Apparatus for and method of speech digitizing |
| 03/04/1998 | EP0826274A2 Lossless coding method for waveform data |
| 03/04/1998 | CN1175135A Bit serial digital expander |
| 03/03/1998 | US5724654 Housing for pager receiver having battery cover locking piece which exposes terminal for external access |
| 03/03/1998 | US5724393 For cooling product merchandisers |