| Patents for H04B 14 - Transmission systems not characterised by the medium used for transmission (7,274) |
|---|
| 08/12/1999 | WO1999040688A1 High-quality audio signals via telephone line |
| 08/11/1999 | EP0857375B1 Method of and apparatus for coding, manipulating and decoding audio signals |
| 08/11/1999 | EP0586565B1 Improved signal encode/decode system |
| 08/05/1999 | WO1999039465A1 Digital silence for a pcm data communication system |
| 08/05/1999 | WO1999012258A3 Audio frequency ripple control transmitter with a pulsed a.c. rectifier provided with a capacitive accumulator |
| 08/04/1999 | EP0933889A1 Digital sound signal transmitting apparatus and receiving apparatus |
| 08/03/1999 | US5933803 Speech encoding at variable bit rate |
| 08/03/1999 | US5933456 Transmitter for and method of transmitting a wideband digital information signal, and receiver |
| 08/03/1999 | CA2145571C Recovering analog and digital signals from superimposed analog and digital signals using linear prediction |
| 07/29/1999 | WO1999022451A3 Methods and devices for encoding audio signals and methods and devices for decoding a bit stream |
| 07/28/1999 | EP0932259A1 Iterative decoding on demand |
| 07/28/1999 | EP0931310A1 Systems and methods for communicating desired audio information over a communications medium |
| 07/28/1999 | CN1224523A Audio signal encoder, audio signal decoder, and method for encoding and decoding audio signal |
| 07/27/1999 | US5930750 Adaptive subband scaling method and apparatus for quantization bit allocation in variable length perceptual coding |
| 07/27/1999 | US5930365 Digital data shuffling/de-shuffling system |
| 07/27/1999 | US5930300 Cooperative feedback system and method for a compensation system associated with a transmitter or codec |
| 07/27/1999 | US5928379 Voice-coded data error processing apparatus and method |
| 07/20/1999 | US5926301 Method and apparatus for optical wireless communication |
| 07/20/1999 | US5925146 Reception data expander having noise reduced in generation of reception data error |
| 07/20/1999 | CA2154885C Efficient transcoding device and method |
| 07/15/1999 | WO1999022561A3 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 |
| 07/15/1999 | WO1999020016B1 Method and apparatus for maintaining a predefined transmission quality in a wireless man network |
| 07/14/1999 | EP0928521A1 Method and apparatus for detecting bad data packets received by a mobile telephone using decoded speech parameters |
| 07/14/1999 | EP0745290A4 A high-data-rate wireless local-area network |
| 07/14/1999 | CN1222996A Transmission system for transmitting speech signals |
| 07/14/1999 | CN1222995A Communication network for transmitting speech signals |
| 07/14/1999 | CN1222993A Variable bitrate speech transmission system |
| 07/13/1999 | US5924064 Variable length coding using a plurality of region bit allocation patterns |
| 07/13/1999 | US5924063 Celp-type speech encoder having an improved long-term predictor |
| 07/13/1999 | US5924061 Method of coding a speech signal |
| 07/08/1999 | WO1999034566A1 System, device and method for pcm upstream transmission utilizing an optimized transmit constellation |
| 07/08/1999 | WO1999034565A1 Device and method for precoding data signals for pcm transmission |
| 07/08/1999 | WO1999034504A1 Device and method for detecting pcm upstream digital impairments in a communication network |
| 07/08/1999 | WO1999034354A1 Sound encoding method and sound decoding method, and sound encoding device and sound decoding device |
| 07/08/1999 | CA2722196A1 A method for speech coding, method for speech decoding and their apparatuses |
| 07/08/1999 | CA2317547A1 System, device and method for pcm upstream transmission utilizing an optimized transmit constellation |
| 07/08/1999 | CA2317545A1 Device and method for precoding data signals for pcm transmission |
| 07/06/1999 | US5920577 Digital signal processing method and apparatus |
| 07/01/1999 | WO1999033050A2 Removing periodicity from a lengthened audio signal |
| 07/01/1999 | WO1999010988A3 Spread spectrum communication device |
| 06/30/1999 | EP0926659A2 Speech encoding and decoding method |
| 06/30/1999 | CN1221169A Coding method and apparatus, and decoding method and apparatus |
| 06/30/1999 | CN1043944C Switched signal processing circuit |
| 06/29/1999 | US5918204 Speech frame disabling circuitry for protection against burst errors of interleaved TDMA frames |
| 06/24/1999 | WO1999031807A1 Σδ modulator-controlled phase-locked-loop circuit and associated method |
| 06/24/1999 | WO1999018681A3 Data processing system and method used in devices for reducing quantization noise |
| 06/24/1999 | WO1999018680A3 System and method for reducing quantization noise |
| 06/16/1999 | EP0923252A2 Synchronization device for decoders |
| 06/16/1999 | EP0922278A1 Variable bitrate speech transmission system |
| 06/16/1999 | CN1219807A Synchronization device |
| 06/15/1999 | US5913190 Method for processing an input audio signal |
| 06/15/1999 | US5912869 Recording medium data transmission method and apparatus and data reproduction method and apparatus |
| 06/10/1999 | WO1999014866A3 Transmission system with improved reconstruction of missing parts |
| 06/09/1999 | EP0921690A2 MPEG information signal conversion system |
| 06/09/1999 | EP0920762A1 Combined daq/rbs compensation system and method for enhancing the accuracy of digital data communicated through a network |
| 06/09/1999 | EP0920750A1 Cooperative feedback system and method for a compensation system associated with a transmitter or codec |
| 06/09/1999 | EP0920732A2 Method and apparatus for communicating information |
| 06/09/1999 | EP0756789A4 Complexity determining apparatus |
| 06/09/1999 | EP0661821B1 Encoding and decoding apparatus causing no deterioration of sound quality even when sinewave signal is encoded |
| 06/09/1999 | CN1218945A Identification of static and non-static signals |
| 06/02/1999 | EP0919989A1 Audio signal encoder, audio signal decoder, and method for encoding and decoding audio signal |
| 06/02/1999 | CN1218344A Voice transmitter |
| 06/01/1999 | US5909664 Method and apparatus for encoding and decoding audio information representing three-dimensional sound fields |
| 05/27/1999 | WO1999026130A1 Remote control system which minimizes screen refresh time by selecting compression algorithm |
| 05/27/1999 | WO1999009656A3 Method and circuit layout for the transmission of messages by means of approximating hermitian functions |
| 05/14/1999 | WO1999022561A2 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 |
| 05/12/1999 | EP0914728A1 Arrangements and methods for generating a radio frequency signal |
| 05/11/1999 | US5903872 Frame-based audio coding with additional filterbank to attenuate spectral splatter at frame boundaries |
| 05/11/1999 | US5903862 Method and apparatus for detection of tandem vocoding to modify vocoder filtering |
| 05/11/1999 | US5903853 Radio transceiver including noise suppressor |
| 05/11/1999 | CA2119983C Communication system |
| 05/11/1999 | CA2106919C Communication system |
| 05/06/1999 | WO1999022451A2 Methods and devices for encoding audio signals and methods and devices for decoding a bit stream |
| 05/04/1999 | US5901234 Encoding method for encoding an acoustic signal |
| 05/04/1999 | US5901186 Bad frame detection |
| 05/04/1999 | US5901178 Post-compression hidden data transport for video |
| 05/04/1999 | US5899969 Method for signal processing |
| 05/04/1999 | US5899967 Speech decoding device to update the synthesis postfilter and prefilter during unvoiced speech or noise |
| 04/29/1999 | WO1999021371A1 Frame-based audio coding with gain-control words |
| 04/29/1999 | WO1999021189A1 Frame-based audio coding with video/audio data synchronization by audio sample rate conversion |
| 04/29/1999 | WO1999021188A1 Frame-based audio coding with video/audio data synchronization by dynamic audio frame alignment |
| 04/29/1999 | WO1999021187A1 Frame-based audio coding with additional filterbank to attenuate spectral splatter at frame boundaries |
| 04/29/1999 | WO1999021167A1 Background noise contrast reduction for handovers involving a change of speech codec |
| 04/29/1999 | DE19747132A1 Audio signal coding method |
| 04/28/1999 | EP0911807A2 Sound synthesizing method and apparatus, and sound band expanding method and apparatus |
| 04/28/1999 | EP0910928A1 Coding and decoding of audio signals by using intensity stereo and prediction processes |
| 04/28/1999 | CN1215490A Method and arrangement for reconstruction of received speech signal |
| 04/27/1999 | US5898696 Method and system for controlling an encoding rate in a variable rate communication system |
| 04/27/1999 | US5897615 Speech packet transmission system |
| 04/22/1999 | WO1999020016A1 Method and apparatus for maintaining a predefined transmission quality in a wireless man network |
| 04/22/1999 | WO1999020004A1 Signal processing method and device |
| 04/22/1999 | CA2306803A1 Method and apparatus for maintaining a predefined transmission quality in a wireless man network |
| 04/22/1999 | CA2274637A1 Signal processing method and device |
| 04/21/1999 | EP0910066A2 Coding method and apparatus, and decoding method and apparatus |
| 04/21/1999 | CN1214603A Method for handing alarm according to channel card type |
| 04/20/1999 | US5896416 Method and arrangement for transmitting voice in a radio system |
| 04/15/1999 | WO1999018681A2 Data processing system and method used in devices for reducing quantization noise |
| 04/15/1999 | WO1999018680A2 System and method for reducing quantization noise |
| 04/14/1999 | EP0691054A4 Efficient transcoding device and method |
| 04/13/1999 | CA2120094C Direct phase digitizing apparatus and method |