| Patents for H04B 14 - Transmission systems not characterised by the medium used for transmission (7,274) |
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| 05/07/1985 | CA1186765A1 Pcm signal recording circuit |
| 05/02/1985 | EP0138981A1 Improved error protection of linearly coded digital signals. |
| 04/30/1985 | CA1186379A1 Arrangement for modulating the output signal of a converter, for example an electro-optical converter |
| 04/24/1985 | EP0138584A2 Self referring type of optical communication system |
| 04/24/1985 | EP0138548A2 Analog-to-digital encoder and digital-to-analog decoder |
| 04/23/1985 | US4513279 Charge redistribution mu-law PCM decoder |
| 04/16/1985 | US4511992 System for reconstituting, by filtering, an analog signal from a pseudo-analog signal |
| 04/03/1985 | EP0054024B1 Subscriber line audio processing circuit apparatus |
| 04/02/1985 | US4509150 Linear prediction coding for compressing of seismic data |
| 04/02/1985 | US4509135 Cosine signal correction circuit |
| 03/27/1985 | EP0135255A2 Inter-frame encoding/decoding equipment provided with a system for detecting a transmission error |
| 03/26/1985 | US4507792 PCM Encoder conformable to the A-law |
| 03/26/1985 | US4507791 Analog and digital signal apparatus |
| 03/26/1985 | US4507650 Charge redistribution A-law PCM decoder |
| 03/19/1985 | CA1184304A1 Apparatus for attenuating and/or amplifying a binary- represented signal |
| 03/12/1985 | US4504960 Data reading apparatus for data transmission |
| 03/05/1985 | US4503453 Digital method and device for correcting the phase error of a sampled signal as applicable to the correction of television signals |
| 02/19/1985 | US4501014 Method for eliminating unwanted acoustic signals in audio programs to be edited for reproduction |
| 02/19/1985 | US4500869 Method for conversion of linearly encoded into non-linearly encoded digital signals |
| 02/14/1985 | WO1985000686A1 Apparatus and methods for coding, decoding, analyzing and synthesizing a signal |
| 02/12/1985 | US4499426 Baseband discriminator for frequency or transform modulation |
| 02/05/1985 | US4498173 Technique for digital split-channel transmission using interpolative coders and decoders |
| 02/05/1985 | US4498170 Time divided digital signal transmission system |
| 01/29/1985 | US4497055 Data error concealing method and apparatus |
| 01/29/1985 | CA1181877A1 Successive frame digital multiplexer with increased channel capacity |
| 01/29/1985 | CA1181876A1 Method and apparatus for efficient statistical multiplexing of voice and data signals |
| 01/29/1985 | CA1181857A1 Silence editing speech processor |
| 01/17/1985 | WO1985000257A1 Method and circuitry for reading the signal to be detected according to the signal value and independently from the frequency range |
| 01/16/1985 | EP0131521A1 Signal analysis and restitution method and system making use of sampling and interpolation |
| 01/16/1985 | EP0131018A1 Guard tone capture method |
| 01/15/1985 | CA1181168A1 Error concealment in digital television signals |
| 01/15/1985 | CA1181154A1 High frequency digital pcm decoding apparatus |
| 01/08/1985 | US4493091 Analog and digital signal apparatus |
| 01/08/1985 | US4492953 Method and apparatus for coding pulse-amplitude modulated signals into pulse-code modulated signals in accordance with an approximated logarithmic characteristic curve |
| 01/01/1985 | US4491953 For use in a digital transmission system |
| 01/01/1985 | US4491869 Pulse code modulation system suitable for digital recording of broadband analog signals |
| 12/27/1984 | EP0129439A1 High speed data compression and decompression apparatus and method |
| 12/27/1984 | EP0129236A2 Signal conversion apparatus for use in PCM signal processing system |
| 12/18/1984 | US4489411 Process and a circuit arrangement for signal transmission using an amplitude-modulated radio broadcasting system |
| 12/18/1984 | CA1179794A1 Apparatus and method of reducing the bit rate of pcm speech |
| 12/11/1984 | US4488291 Circuit arrangement for setting up a conference call |
| 12/06/1984 | WO1984004859A1 Method and apparatus for transmitting digital signal |
| 12/05/1984 | EP0127382A1 Digital audio scrambling system with error conditioning |
| 12/05/1984 | EP0127136A2 Method of transmitting digitally coded analog signals |
| 12/04/1984 | US4486876 Broadband transmission on limited bandwidth digital line |
| 11/28/1984 | EP0126295A2 Pulse code modulation transmission system with data reduction, in particular for television signals |
| 11/27/1984 | CA1178679A1 System for the quantization of signals |
| 11/21/1984 | EP0125423A1 Voice messaging system with pitch tracking based on adaptively filtered LPC residual signal |
| 11/06/1984 | US4481677 Optical transmitting and receiving apparatus |
| 11/06/1984 | US4481659 Apparatus and method of reducing the bit rate of PCM speech |
| 11/06/1984 | US4481644 Differential pulse code modulation transmission system |
| 10/31/1984 | EP0123456A2 A combined intraframe and interframe transform coding method |
| 10/31/1984 | EP0123419A1 Digital sub-band filters |
| 10/31/1984 | EP0123243A2 Testable coder and decoder apparatus |
| 10/25/1984 | WO1984004218A1 Improved error protection of linearly coded digital signals |
| 10/23/1984 | US4479213 Transmission method for transmitting voice and data information over telephone line and device for implementing said method |
| 10/17/1984 | EP0121841A2 Method or improving time resolution in digital systems |
| 10/16/1984 | US4477915 Differential pulse code modulation transmission system |
| 10/16/1984 | US4477900 Digital communications system |
| 10/09/1984 | CA1175945A1 Generalized, interpolative process for the digital- analog conversion of pcm signals |
| 09/19/1984 | EP0118771A2 Compression and expansion of digitized voice signals |
| 09/19/1984 | EP0118762A2 Digital-to-analog converter device |
| 09/18/1984 | CA1174765A1 Method and apparatus for shuffling a block of data |
| 09/11/1984 | CA1174365A1 Pcm signal processing circuit |
| 09/05/1984 | EP0117724A2 Interchannel skew corrector for PCM signals |
| 09/05/1984 | EP0117525A2 Quantisizer for DPCM encoders |
| 09/04/1984 | US4470142 Data processing |
| 09/04/1984 | CA1173934A1 Digital signal transmission system |
| 08/29/1984 | EP0116975A2 Speech-adaptive predictive coding system |
| 08/28/1984 | US4468790 System for the quantization of signals |
| 08/28/1984 | US4468708 Combined data rate reduction system |
| 08/28/1984 | US4468654 Charge redistribution a-law PCM decoder |
| 08/28/1984 | US4468653 Charge redistribution mu-law PCM decoder |
| 08/21/1984 | US4467316 Generalized interpolative method for digital/analog conversion of PCM signals |
| 08/21/1984 | US4467315 Digital compandor having nonlinear companding characteristics |
| 08/21/1984 | US4466440 Heart pacer time-domain processing of internal physiological signals |
| 08/21/1984 | CA1173145A1 Method of seismic exploration |
| 08/08/1984 | EP0115445A2 Optical heterodyne detection pulse receiving system and method |
| 08/08/1984 | EP0115385A2 Radio communication system |
| 08/07/1984 | US4464783 Speech coding method and device for implementing the improved method |
| 08/07/1984 | US4464782 Transmission process and device for implementing the so-improved process |
| 08/07/1984 | CA1172331A1 Self-clocking data transmission system |
| 08/02/1984 | WO1984002999A1 Apparatus for processing pcm signal |
| 07/31/1984 | CA1171930A1 Pcm signal processing apparatus |
| 07/24/1984 | US4462114 Signum signal generator |
| 07/24/1984 | CA1171537A1 Method and apparatus for processing a digital signal for transmission |
| 07/17/1984 | US4460890 Direct digital to digital sampling rate conversion, method and apparatus |
| 07/17/1984 | CA1171170A1 Digital signal processing system |
| 07/11/1984 | EP0113291A2 Speech interpolation method and apparatus in a digitized speech transmission system |
| 07/03/1984 | US4458271 Method and circuit for the transmitting, recording, and/or reproducing of wide-band signals |
| 06/27/1984 | EP0112115A1 Sensor communication system |
| 06/27/1984 | EP0111937A2 Privacy signal transmission system |
| 06/27/1984 | EP0111612A1 Speech signal coding method and apparatus |
| 06/26/1984 | US4457013 Of a telecommunication system |
| 06/26/1984 | CA1169937A1 Process and apparatus for digital data communication using packet switching |
| 06/21/1984 | WO1984002443A1 Guard tone capture method |
| 06/19/1984 | US4455649 Method and apparatus for efficient statistical multiplexing of voice and data signals |
| 06/19/1984 | US4455571 Compression system and compression and expansion system for a composite video signal |
| 06/13/1984 | EP0110726A2 Method and system for transmitting and receiving data |
| 06/13/1984 | EP0110427A2 Method of transmitting information according to which the signals are coded by the amplitude size of the half waves or the periods of a sinusoidally shaped alternating current |