| Patents for H04B 14 - Transmission systems not characterised by the medium used for transmission (7,274) |
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| 07/20/1988 | EP0275099A2 Voice analyzing and synthesizing apparatus |
| 07/20/1988 | EP0274861A2 Two-channel coding of digital signals |
| 07/19/1988 | US4759038 PCM transmission system |
| 07/19/1988 | US4758889 Value correction method |
| 07/12/1988 | US4757518 Coding digital data |
| 07/12/1988 | US4757517 System for transmitting voice signal |
| 07/06/1988 | EP0273567A1 A transmission system |
| 07/05/1988 | US4755994 Capacity expander for telephone line |
| 07/05/1988 | US4755794 Digital-to-digital code converter |
| 06/28/1988 | CA1238687A1 Optical signal transmission system including pulsed fm modulator/demodulator |
| 06/22/1988 | EP0271805A2 Transmission system |
| 06/21/1988 | US4752956 Digital speech coder with baseband residual coding |
| 06/14/1988 | US4751742 Priority coding of transform coefficients |
| 06/07/1988 | US4750190 Apparatus for using a Leroux-Gueguen algorithm for coding a signal by linear prediction |
| 06/07/1988 | US4750167 Digital audio transmission system |
| 06/02/1988 | WO1988004119A1 Digital transmission system |
| 06/02/1988 | WO1988004117A1 Process for transmitting digital audio-signals |
| 06/01/1988 | EP0268972A2 Information transmission method and apparatus, mainly for mobile information-carrying systems |
| 05/31/1988 | US4748446 In a communication system |
| 05/24/1988 | US4747099 PCM communication apparatus |
| 05/24/1988 | CA1237197A1 Sequential logic integrated circuit for pcm compression |
| 05/18/1988 | EP0267344A1 Process for the multi-rate encoding of signals, and device for carrying out said process |
| 05/17/1988 | US4745366 Signal processing arrangement |
| 05/11/1988 | EP0266965A2 Voiceband signal classification |
| 05/11/1988 | EP0266962A2 Voiceband signal classification |
| 05/11/1988 | EP0266751A2 Digital signal-processing method and system |
| 05/10/1988 | US4744085 Data processing device |
| 05/10/1988 | US4743906 Time domain radio transmission system |
| 05/03/1988 | CA1236169A1 Method of and device for correcting burst errors on low bit rate coded speech signals transmitted on radio communication channels |
| 04/27/1988 | EP0265272A2 Direct synthesis modem |
| 04/27/1988 | EP0264999A2 System for transmitting or memorizing input signals |
| 04/27/1988 | EP0163685B1 Apparatus for correcting frequency-dependent attenuation of the transmitting medium in signal transmission |
| 04/26/1988 | US4740993 Digital companding circuit |
| 04/19/1988 | CA1235541A1 Method and apparatus for operating on companded pcm voice data |
| 04/13/1988 | EP0263175A1 Apparatus and method for encoding and decoding attribute data into error checking symbols of main data |
| 04/07/1988 | DE3733096A1 Data demodulating circuit for an FM multiplex radio receiver |
| 04/06/1988 | EP0262647A2 Sample rate conversion system having interpolation function |
| 04/06/1988 | EP0262555A2 Circuit for the dicrete cosine transform |
| 03/30/1988 | EP0261127A1 Tdm communication system for efficient spectrum utilization. |
| 03/29/1988 | US4734768 Method for transmitting differential pulse code modulation (DPCM) values |
| 03/29/1988 | US4734767 Encoder capable of faithfully and adaptively encoding a moving image |
| 03/24/1988 | WO1988002201A1 Digital audio companding and error conditioning |
| 03/22/1988 | US4733219 Converter circuit |
| 03/15/1988 | US4731846 Voice messaging system with pitch tracking based on adaptively filtered LPC residual signal |
| 03/15/1988 | US4731798 Method for transmitting information, in which the signals are coded as amplitudes of the half-waves or periods of a sinusoidal alternating current |
| 03/10/1988 | WO1988001811A1 Digital coding process |
| 03/09/1988 | EP0259053A2 Variable data compression announcement circuit |
| 03/09/1988 | EP0258341A1 Method for digital data transmission. |
| 03/09/1988 | EP0080725B1 Method and apparatus for a/d conversion |
| 03/03/1988 | DE3629434A1 Digitales codierverfahren Digital coding |
| 03/01/1988 | US4729112 Digital sub-band filters |
| 03/01/1988 | CA1233567A1 Analog-to-digital conversion apparatus |
| 02/25/1988 | WO1988000417A3 Method and installation for digital communication, particularly between and toward moving vehicles |
| 02/23/1988 | CA1233239A1 Method for clock rate conversion |
| 02/16/1988 | US4726042 A/D converters |
| 02/16/1988 | US4726037 Predictive communication system filtering arrangement |
| 02/09/1988 | US4724420 Method and apparatus for quasi-analog reconstructions of amplitude and frequency varying analog input signals |
| 02/02/1988 | US4723237 Signal transmission arrangment, a transmitter and a receiver for such an arrangement and a communication system including such an arrangement |
| 02/02/1988 | CA1232357A1 Data compression method and apparatus |
| 01/28/1988 | DE3623783A1 Information transmission system |
| 01/19/1988 | CA1231788A1 Duplex speech transmission method and a system therefor |
| 01/14/1988 | WO1988000417A2 Method and installation for digital communication, particularly between and toward moving vehicles |
| 01/12/1988 | US4719642 Error detection and concealment using predicted signal values |
| 01/12/1988 | US4719451 In a video digital imaging system |
| 01/12/1988 | CA1231452A1 Method and apparatus for a/d conversion |
| 01/12/1988 | CA1231382A1 Signal transmission system having encoder/decoder without frame synchronization signal |
| 01/07/1988 | EP0251028A2 Audio signal transmission method |
| 12/29/1987 | US4716587 Broadband-signal broadcasting system |
| 12/29/1987 | US4716565 Error concealing system for digital data |
| 12/15/1987 | US4713841 Synchronous, asynchronous, data rate transparent fiber optic communications link |
| 12/15/1987 | CA1230380A1 Optical communication system using digital pulse position modulation |
| 12/09/1987 | CN87101996A Data compression using block list transform |
| 12/02/1987 | EP0247081A1 Information transmission system, encoder and decoder. |
| 12/01/1987 | US4710960 Speech-adaptive predictive coding system having reflected binary encoder/decoder |
| 12/01/1987 | US4710957 Data detection by statistical analysis |
| 12/01/1987 | US4710748 Method and device for converting an analog signal into a pulse signal |
| 12/01/1987 | CA1229909A1 Digital audio scrambling system with error conditioning |
| 11/25/1987 | EP0246701A1 DPCM coder and associated decoder |
| 11/25/1987 | EP0138981B1 Improved error protection of linearly coded digital signals |
| 11/19/1987 | EP0245868A2 Signal communication capable of avoiding an audible reproduction of a sequency of information signals |
| 11/19/1987 | EP0245363A1 Analog signal encoding and decoding apparatus and methods. |
| 11/17/1987 | US4707858 Utilizing word-to-digital conversion |
| 11/11/1987 | EP0244729A1 Transmission method for DPCM values |
| 11/10/1987 | US4706300 Optical heterodyne detection pulse receiving system and method |
| 11/10/1987 | US4706261 Differential phase modulation |
| 11/05/1987 | WO1987006783A1 Method and device for recording and reading of numerical sound information signals |
| 11/04/1987 | EP0243562A1 Improved voice coding process and device for implementing said process |
| 10/28/1987 | CN87102700A Method of and arrangement for restoring invalid samples of equidistantly sampled signal |
| 10/27/1987 | US4703480 Digital audio transmission |
| 10/27/1987 | US4703353 Signal interpolators |
| 10/22/1987 | WO1987006368A1 Apparatus and method for encoding and decoding attribute data into error checking symbols of main data |
| 10/21/1987 | EP0242258A1 Device for the execution of an algorithm (Leroux-Gueguen) for the coding of a signal by linear prediction |
| 10/21/1987 | EP0241980A1 Method of and arrangement for restoring samples of an equidistantly sampled signal which are considered invalid |
| 10/21/1987 | EP0241977A1 Method of and arrangement for restoring invalid samples of an equidistantly sampled signal |
| 10/20/1987 | US4701937 Signal storage and replay system |
| 10/14/1987 | EP0240948A2 A method of and a device for digital signal coding by vector quantization |
| 10/13/1987 | US4700360 An analog waveform |
| 10/08/1987 | WO1987006083A1 Tdm communication system for efficient spectrum utilization |
| 10/07/1987 | EP0240123A2 Digital encoder and decoder synchronization in the presence of data dropouts |
| 09/30/1987 | EP0239076A2 Encoder capable of faithfully and adaptively encoding a moving image |