| Patents for H04B 14 - Transmission systems not characterised by the medium used for transmission (7,274) |
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| 03/03/1998 | US5724277 Background noise generating apparatus |
| 02/26/1998 | WO1998008329A1 Combined daq/rbs compensation system and method for enhancing the accuracy of digital data communicated through a network |
| 02/26/1998 | WO1998008318A1 Cooperative feedback system and method for a compensation system associated with a transmitter or codec |
| 02/26/1998 | WO1997050202A3 Method and apparatus for communicating information |
| 02/25/1998 | CN1174457A Speech signal transmission method, and speech coding and decoding system |
| 02/24/1998 | US5721743 Method of and system for communicating messages |
| 02/24/1998 | CA2072526C Digital sigma-delta modulator and arithmetic overflow protected adder |
| 02/17/1998 | US5719993 Long term predictor |
| 02/17/1998 | US5719574 Digital audio transmission apparatus |
| 02/11/1998 | EP0823154A1 Method and device for transmitting analogue signals by means of a transmission system using optical transmission lines |
| 02/11/1998 | EP0823152A1 Full duplex ultrawide-band communication system and method |
| 02/10/1998 | US5717822 Computational complexity reduction during frame erasure of packet loss |
| 02/10/1998 | US5717724 Voice encoding and voice decoding apparatus |
| 02/03/1998 | US5715366 Method for the coded transmission of voice signals |
| 02/03/1998 | US5715364 Call monitor apparatus for speech processing equipment |
| 02/03/1998 | US5715006 apparatus for and method of motion compensation with boundarycorrection for moving picture |
| 02/03/1998 | US5714951 Method and apparatus of reproducing digital data |
| 01/29/1998 | WO1998003955A1 Digital data shuffling/deshuffling system |
| 01/27/1998 | US5712920 Method for the compatible transmission and/or storage and decoding of an auxiliary signal |
| 01/27/1998 | US5712874 Noise shaper capable of generating a predetermined output pattern in no-signal condition |
| 01/27/1998 | US5712871 Method and apparatus for implementing a direct-sequence code division multiple access communication system with an M-ary pulse-position modulated spreading-sequence signal |
| 01/27/1998 | US5712838 Method and apparatus for recording on a disk medium a ΣΔ-modulated signal with a sampling frequency n×44.1 kHz |
| 01/22/1998 | WO1998003037A1 Coding and decoding of audio signals by using intensity stereo and prediction processes |
| 01/21/1998 | EP0820172A2 Data transmission by multicarrier modulation using a higher power for reference symbols |
| 01/15/1998 | DE19706516C1 Encoding method for discrete signals and decoding of encoded discrete signals |
| 01/14/1998 | CN1170203A Audio data decoding apparatus and audio data coding/decoding system |
| 01/14/1998 | CN1170190A Voice encoding/decoding apparatus |
| 01/08/1998 | DE19627191A1 Digital signal processor for adaptive differential pulse code modulation e.g. for voice-band telephone communication |
| 01/07/1998 | EP0815668A2 Transmitter for and method of transmitting a wideband digital information signal, and receiver |
| 01/07/1998 | EP0815660A1 Process for monitoring the quantisation quality in digital radio or television transmission systems |
| 01/07/1998 | EP0746913B1 Process for the cascade coding and decoding of audio data |
| 01/06/1998 | US5706396 Error protection system for a sub-band coder suitable for use in an audio signal processor |
| 01/06/1998 | US5706309 Process for transmitting and/or storing digital signals of multiple channels |
| 01/06/1998 | US5706308 Signal processing apparatus and method for sigma-delta modulated signals including gain adjustment |
| 12/31/1997 | WO1997050202A2 Method and apparatus for communicating information |
| 12/31/1997 | CN1169220A Ultrawide-band communications system and method |
| 12/31/1997 | CA2258002A1 Method and apparatus for communicating information |
| 12/30/1997 | CA2103971C Speech decoding apparatus comprising alarm signal generator operable on deterioration of transmission path quality |
| 12/29/1997 | EP0530342B1 Dynamic range compression |
| 12/24/1997 | WO1997049216A1 Improved coding system for digital transmission compression |
| 12/24/1997 | CN1168575A Modulation-demodulation signal, transmitter transmitting method and its transmitting system |
| 12/24/1997 | CA2258682A1 Improved coding system for digital transmission compression |
| 12/23/1997 | US5701346 Method of coding a plurality of audio signals |
| 12/16/1997 | US5699485 Pitch delay modification during frame erasures |
| 12/16/1997 | US5699119 Quantization method and circuit therefor |
| 12/16/1997 | CA2108208C Arrangement for demodulating speech signals discontinuously transmitted from a mobile unit |
| 12/11/1997 | DE19628293C1 Codieren und Decodieren von Audiosignalen unter Verwendung von Intensity-Stereo und Prädiktion Encoding and decoding of audio signals by using intensity stereo prediction and |
| 12/10/1997 | EP0481895B1 Method and apparatus for low bit rate transmission of a speech signal using CELP coding |
| 12/10/1997 | CN1167384A Transmission system for digital audio-frequency broadcasting |
| 12/09/1997 | US5696791 Apparatus and method for decoding a sequence of digitally encoded data |
| 12/09/1997 | CA2100857C Method and apparatus for decoding video signals |
| 12/03/1997 | EP0810602A2 Improvements in systems for achieving enhanced frequency resolution |
| 12/03/1997 | EP0810601A2 Improvements in hidden code side channels |
| 12/03/1997 | EP0810600A2 Improvements in systems for archieving enhanced amplitude resolution |
| 12/03/1997 | EP0810599A2 Improvements in signal encode/decode systems |
| 12/02/1997 | US5694426 Signal quantizer with reduced output fluctuation |
| 12/02/1997 | US5694425 Digital audio signal transmitting apparatus |
| 11/25/1997 | US5692127 System for transmitting multiple pulses PPM control signal to wireless device to indicate collision in a wired network while placing data on the network |
| 11/25/1997 | US5692105 In a digital mobile radio system |
| 11/25/1997 | US5691916 Method and device for calculating the quality of transmission media containing codecs |
| 11/19/1997 | EP0696404B1 Differential coding and decoding method and related circuits |
| 11/19/1997 | CN1165574A Very low bit rate voice messaging system using asymmetric voice compression processing |
| 11/12/1997 | EP0806848A2 Voice encoding/decoding apparatus |
| 11/12/1997 | EP0806032A1 Method and apparatus for detection and bypass of tandem vocoding |
| 11/12/1997 | CN1164942A Digital transmission system, transmitter, receiver, equivalent analog signal, and transmission method |
| 11/11/1997 | US5687285 In an input speech signal |
| 11/11/1997 | US5687284 Excitation signal encoding method and device capable of encoding with high quality |
| 11/11/1997 | US5687283 Pause compressing speech coding/decoding apparatus |
| 11/11/1997 | US5687282 Method and apparatus for determining a masked threshold |
| 11/11/1997 | US5687243 Noise suppression apparatus and method |
| 11/11/1997 | US5687192 Circuit arrangement for transmitting information on a two-wire line |
| 11/11/1997 | US5687189 Method of noise reduction for an ADPCM signal |
| 11/11/1997 | US5687184 Method and circuit arrangement for speech signal transmission |
| 11/11/1997 | US5687169 Full duplex ultrawide-band communication system and method |
| 11/11/1997 | US5687157 Method of recording and reproducing digital audio signal and apparatus thereof |
| 11/11/1997 | US5686869 Pulse-width modulating device |
| 11/05/1997 | CN1164086A Digital signal recording apparatus and digital signal processing apparatus |
| 11/04/1997 | US5684922 Encoding and decoding apparatus causing no deterioration of sound quality even when sine-wave signal is encoded |
| 11/04/1997 | US5684829 Digital signal processing coding and decoding system |
| 11/04/1997 | US5684804 Device for transmitting, receiving and decoding compressed audiovisual streams |
| 10/28/1997 | US5682432 Broadcast receiver |
| 10/28/1997 | CA1339517C Codecs with suppression of multiple encoding/decodings across a connection |
| 10/22/1997 | EP0802648A1 Method and device for the correction of errors in the transmission of series of information items |
| 10/22/1997 | EP0802636A2 Method and apparatus for error correction |
| 10/22/1997 | EP0801852A1 Repeated decoding and encoding in subband encoder/decoders |
| 10/21/1997 | CA2075843C Echo canceller |
| 10/16/1997 | WO1997038416A1 Method and arrangement for reconstruction of a received speech signal |
| 10/16/1997 | CA2248891A1 Method and arrangement for reconstruction of a received speech signal |
| 10/15/1997 | EP0801377A2 Method and apparatus for coding a signal |
| 10/14/1997 | US5677927 Impulse radio transmitter |
| 10/14/1997 | US5677911 Data frame format for a digital signal having multiple data constellations |
| 10/08/1997 | EP0800297A1 Multiplex transmission and reception system |
| 10/08/1997 | EP0800289A2 A transmission system for digital audio broadcasting |
| 10/08/1997 | CN1161533A Disc recording method, disc reproducing apparatus, and disc-shaped recording medium |
| 10/07/1997 | US5675333 Digital compressed sound recorder |
| 10/01/1997 | EP0798900A2 Multiplex data transmission system |
| 10/01/1997 | CN1160954A Digital signal processing method and apparatus |
| 09/30/1997 | US5673287 Dual mode amplifier network having an isolator in a digital path and a filter in an analog path |
| 09/30/1997 | US5673210 Signal restoration using left-sided and right-sided autoregressive parameters |
| 09/30/1997 | US5673206 Real-time digital audio compression/decompression system |