| Patents for H04B 14 - Transmission systems not characterised by the medium used for transmission (7,274) |
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| 03/31/1993 | CN1020230C PCM communication system |
| 03/30/1993 | US5199046 First and second digital rate converter synchronization device and method |
| 03/24/1993 | EP0533395A1 A cellular radio communication system with different modulation according to cell size |
| 03/23/1993 | US5196853 Sigma delta converter insensitive to asymmetrical switching times |
| 03/23/1993 | CA1314994C Resisting the effects of channel noise in digital transmission of information |
| 03/18/1993 | WO1993005598A1 First and second digital rate converter synchronization device and method |
| 03/17/1993 | EP0532209A2 Communication processing apparatus, communication processing system, and communication processing method |
| 03/17/1993 | EP0531604A1 Digital sigma-delta modulator |
| 03/17/1993 | EP0531455A1 Method and apparatus for encoding and decoding using wavelet-packets |
| 03/17/1993 | CN1070075A Encoder arrangement |
| 03/10/1993 | EP0531046A2 Multi-subcarrier modulation for HDTV transmission |
| 03/10/1993 | EP0530916A2 Encoding method and encoding system comprising a subband coder for subband coding of a wideband digital signal constituted by first and second signal components |
| 03/10/1993 | EP0530912A1 Receiver with analog compression and digital expansion |
| 03/10/1993 | EP0530342A1 Dynamic range compression |
| 03/03/1993 | EP0530073A1 System for data exchange using microwaves, with simultaneous transmission and reception |
| 03/03/1993 | EP0529154A1 Encoder arrangement |
| 03/01/1993 | CA2076818A1 Encoder arrangement |
| 02/24/1993 | EP0528650A2 Circuit for digitally adding loss to a signal |
| 02/24/1993 | CA2076469A1 Microwave data exchange system with simultaneous transmission and reception |
| 02/23/1993 | US5189669 Cell transfer apparatus and method using a variable rate codec |
| 02/17/1993 | EP0527535A2 Apparatus for transmission of speech |
| 02/17/1993 | EP0527527A2 Method and apparatus for manipulating pitch and duration of a physical audio signal |
| 02/17/1993 | EP0527289A1 Method for transmission of digital HDTV signals |
| 02/03/1993 | EP0525969A2 A frequency translating coherent analog to digital conversion system for modulated signals |
| 02/03/1993 | EP0289080B1 System for subband coding of a digital audio signal |
| 02/02/1993 | US5184316 System for very efficiently coding by performing interblock and intrablock normalization |
| 01/27/1993 | EP0524264A1 Adaptive-block-length, adaptive-transform, and adaptive-window transform coder and decoder for high-quality audio. |
| 01/27/1993 | EP0524237A1 Data alignment |
| 01/25/1993 | WO1993002508A1 Process for finding the overall monitoring threshold during a bit-rate-reducing source coding |
| 01/20/1993 | EP0523307A1 Decimation filter for a sigma-delta converter and data circuit terminating equipment including the same |
| 01/20/1993 | EP0523306A1 Decimation filter for a sigma-delta converter and an analog-to-digital converter using the same |
| 01/12/1993 | US5179623 Method for transmitting an audio signal with an improved signal to noise ratio |
| 12/30/1992 | EP0520068A1 Encoder/decoder for multidimensional sound fields. |
| 12/23/1992 | EP0519055A1 Decoder for variable-number of channel presentation of multidimensional sound fields. |
| 12/23/1992 | EP0362315B1 Device for monitoring acoustic signal processing systems |
| 12/16/1992 | EP0518835A1 Method of compensating the dependence of the useful transmitter signal on the transfer function of a combiner filter |
| 12/15/1992 | US5172393 Circuit arrangement for channel-specific processing of a multi-channel input signal |
| 12/10/1992 | WO1992022152A1 Pcm monitor |
| 12/10/1992 | WO1992022060A1 Improved signal encode/decode system |
| 12/08/1992 | CA1311302C Apparatus and methods for recovering alignment from a non-ideally encodedmulti-bit digital signal |
| 11/25/1992 | EP0515154A1 Idle channel tone and periodic noise suppression for sigma delta modulators using high level dither |
| 11/25/1992 | EP0515101A2 Buffer control for variable bit-rate channel |
| 11/25/1992 | EP0514949A2 Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio |
| 11/24/1992 | US5166981 Adaptive predictive coding encoder for compression of quantized digital audio signals |
| 11/24/1992 | US5166958 Coding apparatus with low-frequency and DC suppression |
| 11/24/1992 | US5166954 Adaptive system for measuring the broadband signal-to-noise ratio of a transmission channel |
| 11/19/1992 | EP0513860A2 Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio |
| 11/17/1992 | US5164963 Communicating television information |
| 11/10/1992 | US5163053 Audio signal demodulation circuit |
| 11/04/1992 | EP0511886A1 Phase shifter with vector modulator |
| 11/04/1992 | EP0511692A2 Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio |
| 11/03/1992 | US5161210 Coder for incorporating an auxiliary information signal in a digital audio signal, decoder for recovering such signals from the combined signal, and record carrier having such combined signal recorded thereon |
| 10/30/1992 | CA2065540A1 Vector modulated phase shifter circuit |
| 10/27/1992 | US5159703 Silent subliminal presentation system |
| 10/27/1992 | US5159638 Speech detector with improved line-fault immunity |
| 10/27/1992 | US5159611 Variable rate coder |
| 10/27/1992 | US5159452 Video signal transmitting method and equipment of the same |
| 10/27/1992 | US5159447 Buffer control for variable bit-rate channel |
| 10/27/1992 | US5159338 Sampling frequency conversion apparatus |
| 10/20/1992 | US5157728 Automatic length-reducing audio delay line |
| 10/20/1992 | US5157343 Electronic arrangement for receiving a modulated carrier signal |
| 10/14/1992 | EP0508597A2 ADPCM transcoder wherein different bit numbers are used in code conversion |
| 10/14/1992 | EP0508581A2 Compression of signals using a perceptual model |
| 10/14/1992 | EP0284627B1 Digital audio companding and error conditioning |
| 10/13/1992 | US5155743 Digital data converter |
| 10/07/1992 | EP0507684A1 Communication system, especially for air traffic control |
| 10/07/1992 | CN1065168A Transmission system and receiver to be used in transmission system |
| 10/06/1992 | CA1308487C Simple coefficient half-bandwidth digital filter for video data compression |
| 10/04/1992 | CA2064946A1 Communication system applicable namely to air traffic control |
| 09/30/1992 | EP0506535A1 Method and system for processing of pre-echos of a frequency transform coded digital audio signal |
| 09/30/1992 | EP0506394A2 Coding apparatus for digital signals |
| 09/29/1992 | US5151698 Method for the coding of a digital signal, coder and decoder to implement this method, regeneration method and corresponding regenerator utilizing pulse position modulation |
| 09/29/1992 | CA1308194C Method and apparatus employing offset extraction and companding for digitally encoding and decoding high-fidelity audio signals |
| 09/28/1992 | CA2063954A1 Method and system for processing the preechos of an audio-digital signal coded by frequency transformation |
| 09/23/1992 | EP0170087B1 Method and apparatus for analyzing and synthesizing human speech |
| 09/21/1992 | WO1992016996A1 Dynamic range compression |
| 09/21/1992 | CA2082171A1 Dynamic range compression |
| 09/16/1992 | EP0503413A2 Method and apparatus for coding and decoding of an analog low frequency signal into a PCM format, especially for transmitting speech information in intercom apparatus |
| 09/16/1992 | EP0503282A1 Motor-car radio |
| 09/09/1992 | EP0502681A1 An adaptive system for measuring the broadband signal-to-noise ratio of a transmission channel |
| 09/09/1992 | EP0502546A2 Radio communication apparatus |
| 09/08/1992 | US5146457 Device for transmitting data words representing a digitalized analog signal and device for receiving the transmitted data words |
| 09/08/1992 | CA1307342C Voiceband signal classification |
| 09/08/1992 | CA1307341C Voiceband signal classification |
| 09/02/1992 | EP0500961A1 Voice coding system |
| 09/01/1992 | US5144308 Idle channel tone and periodic noise suppression for sigma-delta modulators using high-level dither |
| 09/01/1992 | US5144306 Noise shaping circuit |
| 08/26/1992 | EP0500159A1 Transmission system, and receiver to be used in the transmission system |
| 08/26/1992 | EP0499827A2 Car radio comprising a circuit for Analog/Digital conversion of the IF signal |
| 08/26/1992 | EP0163736B1 Apparatus for processing pcm signal |
| 08/25/1992 | US5142582 Speech coding and decoding system with background sound reproducing function |
| 08/25/1992 | CA1306809C Variable data compression announcement circuit |
| 08/20/1992 | DE4202782A1 Coded information transmission system using IR light - uses preceding head telegram to identify information telegram format |
| 08/19/1992 | EP0499560A1 Channel estimation method for COFDM transmission system |
| 08/12/1992 | EP0498081A1 Video coder/decoder with shift prevention for correctly decoded signal blocks |
| 08/06/1992 | WO1992013396A1 Process for transmitting digitised, block-coded audio signals using scale factors |
| 08/05/1992 | EP0497413A1 Subband coding system and a transmitter comprising the coding system |
| 08/05/1992 | CN1017768B Method and equipment for communication in underground channel |
| 08/04/1992 | US5136652 Amplitude enhanced sampled clipped speech encoder and decoder |
| 08/04/1992 | US5136576 Transmission system |