| Patents for H04B 14 - Transmission systems not characterised by the medium used for transmission (7,274) |
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| 04/18/2001 | EP1023809B1 Frame-based audio coding with gain-control words |
| 04/18/2001 | CN1291766A Digital signal processing equipment and digital signal processing method |
| 04/17/2001 | US6219380 Pulse position modulation based transceiver architecture with fast acquisition slot-locked-loop |
| 04/17/2001 | US6219067 Measures for characterizing compressed bitstreams |
| 04/17/2001 | CA2077662C Encoder/decoder for multidimensional sound fields |
| 04/12/2001 | WO2001026274A1 Method and device for transmitting data frames and a method and a device for adapting data rates |
| 04/12/2001 | WO2001026094A1 Voice encoding device and voice encoding method |
| 04/11/2001 | EP1091517A1 Communication method and apparatus using punctured or repeated data |
| 04/11/2001 | CN1291402A Device and method for supporting analogue facsimile call in exchanging structure |
| 04/11/2001 | CN1291331A Embedding supplemental data in an information signal |
| 04/10/2001 | US6215996 Mobile communication system |
| 04/05/2001 | WO2001024549A2 Voice over pcm technique providing compatibility between pcm data and lower rate vocoder data |
| 04/05/2001 | WO2001024382A1 Method and device for channel encoding in an information transfer system |
| 04/05/2001 | WO2001024164A1 Voice encoder, voice decoder, and voice encoding and decoding method |
| 04/05/2001 | US20010000137 Leased line optimization and voice quality improvement in bandwidth constrained communication systems |
| 04/04/2001 | EP1089258A2 Apparatus for expanding speech bandwidth |
| 04/04/2001 | CN1290427A 无线电接收机 Radio receiver |
| 04/04/2001 | CN1064200C Transcoding and transdecoding units and method for adjusting the output thereof |
| 04/03/2001 | US6212230 Method and apparatus for pulse position modulation |
| 04/03/2001 | CA2059455C Device for the coherent demodulation of time-frequency interlaced digital data, with estimation of the frequency response of the transmission channel and threshold, and corresponding transmitter |
| 03/29/2001 | WO2001004734A3 Portable information terminal, method of processing audio data, recording medium, and program |
| 03/28/2001 | EP1087620A2 Frame switcher and method of switching, digital camera, and monitoring system |
| 03/28/2001 | EP1086542A1 A method and apparatus for digital channelisation and de-channelisation |
| 03/28/2001 | EP1086446A1 A system and method for communicating with plural remote transmitters |
| 03/28/2001 | CN1289211A Frame converter and conversion method, digital pick-up camera and monitoring system thereof |
| 03/27/2001 | US6208961 Apparatus for preventing use of erroneous speech encoding parameters for decoding digital speech transmissions |
| 03/27/2001 | US6208960 Removing periodicity from a lengthened audio signal |
| 03/27/2001 | US6208957 Voice coding and decoding system |
| 03/22/2001 | WO2001020892A2 A method for transmitting data between respective first and second modems in a telecommunications system, and a telecommunications system |
| 03/22/2001 | WO2001020786A1 Group chain reaction encoder with variable number of associated input data for each output group code |
| 03/21/2001 | EP1085503A2 Addressing of multipulse excitation table for a speech coder |
| 03/21/2001 | CN1288564A Embedding and extracting supplemental data in an information signal |
| 03/20/2001 | US6205184 System and method for compressing a transmitted signal to achieve narrow and very narrow band frequency or phase modulation |
| 03/20/2001 | US6205170 Transmission/reception unit with bidirectional equalization |
| 03/20/2001 | US6205169 Spread spectrum pulse position modulation communication system |
| 03/20/2001 | US6204810 Communications system |
| 03/14/2001 | EP1083674A2 Digital signal encoding device, its decoding device, and its recording medium |
| 03/14/2001 | EP1083656A2 Switched signal processing circuit |
| 03/14/2001 | EP1083548A2 Method for gain control of a CELP speech decoder |
| 03/14/2001 | CN1287729A Transmitting / receiving device and transmitting / receiving method |
| 03/14/2001 | CN1287658A CELP voice encoder |
| 03/13/2001 | US6201842 Device and method for detecting PCM upstream digital impairments in a communication network |
| 03/08/2001 | WO2001016941A1 Transmission system with improved encoder and decoder |
| 03/07/2001 | EP1081684A2 Method for editing a subband encoded audio signal |
| 03/07/2001 | EP1080579A2 Scalable audio coder and decoder |
| 03/07/2001 | EP1080542A2 System and method for masking quantization noise of audio signals |
| 03/07/2001 | EP1080462A2 System and method for entropy encoding quantized transform coefficients of a signal |
| 03/07/2001 | CN1286553A Method for control of error of wide-band radio communication link layer and computer readable medium |
| 03/07/2001 | CN1062963C Encoder/decoder for producing high-quality audio signals |
| 03/06/2001 | US6199038 Signal encoding method using first band units as encoding units and second band units for setting an initial value of quantization precision |
| 03/06/2001 | US6198940 Mobile radiophone apparatus |
| 03/06/2001 | US6198776 Device and method for precoding data signals for PCM transmission |
| 03/01/2001 | WO2001015358A2 Method and apparatus for transmission and reception of compressed audio frames with prioritized messages for digital audio broadcasting |
| 03/01/2001 | CA2383408A1 Method and apparatus for transmission and reception of compressed audio frames with prioritized messages for digital audio broadcasting |
| 02/27/2001 | US6195402 Pattern matching apparatus |
| 02/27/2001 | US6195384 Method and apparatus compensating for effects of digital loss insertion in signal transmission between modems |
| 02/27/2001 | CA2077668C Decoder for variable-number of channel presentation of multidimensional sound fields |
| 02/22/2001 | WO2001013518A1 Chaotic carrier pulse position modulation communication system and method |
| 02/22/2001 | WO2001013375A1 Transmission of a digital information signal having m bit pcm samples |
| 02/20/2001 | US6192334 Audio encoding apparatus and audio decoding apparatus for encoding in multiple stages a multi-pulse signal |
| 02/20/2001 | US6191717 Analog isolation system with digital communication across a capactive barrier |
| 02/14/2001 | CN1284217A Sigma Delta modulator-controlled phase-locked-loop circuit and associated method |
| 02/14/2001 | CN1283904A Speech decording appts |
| 02/13/2001 | US6188791 Image processing apparatus |
| 02/13/2001 | US6188344 Signal processors |
| 02/08/2001 | WO2001010035A1 Variable order sigma - delta modulator |
| 02/07/2001 | EP1074975A2 Method for decoding an audio signal with transmission error concealment |
| 02/07/2001 | EP1074088A1 Method for converting the scanning rate |
| 02/07/2001 | CN1283352A System, device and method for PCM upstream transmission utilizing optimized transmit constellation |
| 02/07/2001 | CN1283351A Device and method for precoding data signals for PCM transmission |
| 02/07/2001 | CN1283325A Device and method for detecting PCM upstream digital impairments in communication metwork |
| 02/07/2001 | CN1283298A Sound encoding method, sound decoding method, and sound encoding device and sound decoding device |
| 02/07/2001 | CN1283007A Decoding method and equipment and program facility medium |
| 02/06/2001 | US6185526 Speech transmission and reception system for digital communication |
| 02/06/2001 | US6185249 Translation table design for a PCM modem |
| 02/06/2001 | CA2177421C Pitch delay modification during frame erasures |
| 01/31/2001 | EP1073231A2 Signal encoding for transmission of multiple digital signals over single physical medium |
| 01/31/2001 | EP1073039A2 Speech decoder with gain processing |
| 01/30/2001 | US6182101 Method for sampling frequency conversion employing weighted averages |
| 01/30/2001 | US6181752 Device and method for detecting PCM upstream digital impairments in a communication network |
| 01/30/2001 | US6181745 Process for monitoring the quantization quality in digital radio or television transmission systems |
| 01/30/2001 | US6181737 Distinguishing received A-law and μ-law signals in a PCM modem |
| 01/23/2001 | US6178200 Constellation design for a PCM modem |
| 01/18/2001 | WO2001005076A1 Method for sending information in a telecommunication system |
| 01/18/2001 | WO2001005074A2 Method for preparing audio data in source code and transmitter and receiver for executing same |
| 01/18/2001 | WO2001004734A2 Portable information terminal, method of processing audio data, recording medium, and program |
| 01/18/2001 | DE19932062A1 Verfahren zur Aufbereitung von quellcodierten Audiodaten sowie Sender und Empfänger hierzu Method for conditioning source-encoded audio data as well as transmitter and receiver for this purpose |
| 01/18/2001 | CA2343374A1 Portable information terminal, method of processing audio data, recording medium, and program |
| 01/17/2001 | EP0852853A4 Cellular communication system with multiple code rates |
| 01/16/2001 | CA2127520C Signal processing circuit |
| 01/16/2001 | CA2027136C Perceptual coding of audio signals |
| 01/11/2001 | WO2001003317A1 Coded domain adaptive level control of compressed speech |
| 01/11/2001 | WO2001003316A1 Coded domain echo control |
| 01/11/2001 | WO2001003122A1 Method for improving the coding efficiency of an audio signal |
| 01/11/2001 | WO2001002929A2 Coded domain noise control |
| 01/11/2001 | CA2378062A1 Coded domain adaptive level control of compressed speech |
| 01/11/2001 | CA2378035A1 Coded domain noise control |
| 01/11/2001 | CA2378012A1 Coded domain echo control |
| 01/10/2001 | CN1279807A Background noise contrast reduction for handovers involving a change of speech codes |
| 01/09/2001 | US6173256 Method and apparatus for audio representation of speech that has been encoded according to the LPC principle, through adding noise to constituent signals therein |