| Patents for H03M 3 - Conversion of analogue values to or from differential modulation (7,070) |
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| 09/30/1980 | US4225963 Arrangement for processing a delta modulation signal, in particular for decoding these signals |
| 09/23/1980 | US4224571 Delta modulation decoder with charge quanta magnitude correction |
| 07/29/1980 | US4215311 Adaptive delta-modulation system |
| 07/15/1980 | CA1081790A1 Transmission system with a transmitter and a receiver for signal transmission by means of discrete output values which characterize the tansmitted signqls in time quantizationaand an at least trivalent amplitude quantization |
| 07/09/1980 | EP0012888A1 Adaptive delta modulator |
| 07/09/1980 | EP0012766A1 Predictive speech signal coding with reduced noise effects |
| 06/25/1980 | EP0012632A1 Compression and expansion (quantification) of digital differentially encoded television signals |
| 06/17/1980 | US4208740 Adaptive delta modulation system |
| 06/03/1980 | US4206447 Adaptive quantizer apparatus for differential coding of nonuniform digital signals |
| 05/28/1980 | EP0011341A1 Differential pulse code modulation transmission system |
| 05/20/1980 | US4204163 Minimum group pulse code modem having shape and amplitude codes |
| 05/13/1980 | CA1077624A1 Gain method and apparatus for a delta modulator |
| 05/06/1980 | US4201958 Delta modulation which partitions input signal into variable-time segments that are iteratively encoded |
| 04/22/1980 | US4199722 Tri-state delta modulator |
| 02/26/1980 | US4190824 Data transmission system using a sequential approximation encoding and decoding technique |
| 02/26/1980 | US4190801 Digital encoding circuitry |
| 02/26/1980 | CA1072684A1 Digital encoder/decoder |
| 02/07/1980 | WO1980000207A1 Predictive differential pulse-code modulation apparatus |
| 02/05/1980 | CA1071310A1 Receiver for the reception of signals transmitted by pulse code modulation |
| 01/15/1980 | US4184150 Circuit arrangement for halving the sampling rate of a delta modulation signal |
| 12/18/1979 | US4179659 Signal transmission system |
| 12/18/1979 | CA1068346A1 Arrangement for the transmission of information signals by pulse code modulation |
| 12/12/1979 | EP0006023A1 Analogue-to-digital signal conversion and storage system |
| 11/27/1979 | US4176321 Delta modulation detector |
| 11/15/1979 | WO1979000901A1 Predictive speech signal coding with reduced noise effects |
| 10/09/1979 | CA1064172A1 Apparatus for suppressing background noise in a digital telephone system |
| 05/15/1979 | CA1054719A1 Circuit for curtailing effects of bit errors in pulse coded transmission |
| 04/24/1979 | US4151517 Closed loop companding ratio control for continuously variable slope delta modulation |
| 04/24/1979 | CA1053373A1 Differential pulse coded system using shift register companding |
| 04/03/1979 | CA1052006A1 Adaptive delta modulation system |
| 03/20/1979 | CA1051119A1 Delta modulator having increased dynamic range |
| 03/13/1979 | US4144543 Predictive codec capable of selecting one of at least three prediction signals in two steps |
| 01/09/1979 | US4133976 Predictive speech signal coding with reduced noise effects |
| 01/02/1979 | US4133006 Predictive encoder or decoder with selection of one of two or more prediction signals according to prediction error signal amplitudes |
| 10/31/1978 | US4123709 Adaptive digital delta modulation for voice transmission |
| 10/24/1978 | US4122442 Integrable bidirectional shift register in analog-to-digital converter |
| 09/05/1978 | US4111090 Noise reduction circuit for a digital tone generator |
| 08/29/1978 | US4110705 Noise reduction method and apparatus for companded delta modulators |
| 08/22/1978 | US4109203 Delta-modulation encoder |
| 08/15/1978 | US4107669 Apparatus for analog to digital conversion |
| 08/15/1978 | US4107610 Data transmission system using a sequential approximation encoding and decoding technique |
| 07/11/1978 | US4100494 Dynamic control of code modulated pulse transmission |
| 07/11/1978 | US4100493 Transmission system for signal transmission by means of compressed delta modulation |
| 07/04/1978 | US4099122 Transmission system by means of time quantization and trivalent amplitude quantization |
| 06/06/1978 | US4093962 Adaptive predictive encoder |
| 05/23/1978 | US4091242 High speed voice replay via digital delta modulation |
| 02/21/1978 | US4075701 Method and circuit arrangement for adapting the measuring range of a measuring device operating with delta modulation in a navigation system |
| 01/31/1978 | US4071842 Apparatus for analog to digital conversion |
| 01/31/1978 | US4071825 Adaptive delta modulation system |
| 11/22/1977 | US4059800 Digital multi-line companded delta modulator |
| 09/27/1977 | US4051470 Process for block quantizing an electrical signal and device for implementing said process |
| 09/27/1977 | US4051428 Current control circuit with current proportional circuit |
| 08/16/1977 | US4042921 Decoder |
| 08/02/1977 | US4039955 Receiver for the reception of signals transmitted by delta modulation |
| 08/02/1977 | US4039950 Pulse code transmitter and receiver designed to produce uniform transfer characteristics in the face of component variations |
| 05/24/1977 | US4025852 Method and arrangement for controlling delta modulator idle-channel noise |
| 05/03/1977 | US4021799 Non-linear coding system |
| 04/12/1977 | US4017849 Apparatus for analog to digital conversion |
| 02/22/1977 | US4009475 Delta-sigma converter and decoder |
| 02/15/1977 | US4008435 Delta modulation encoder |
| 11/30/1976 | US3995218 Adaptive delta modulation system for correcting mistracking |
| 11/30/1976 | US3995217 Method and apparatus for suppressing background noise in a digital telephone system |
| 09/14/1976 | US3980953 Delta modulation system employing digital frame averaging |
| 08/17/1976 | US3975686 Loss signal generation for delta-modulated signals |
| 08/03/1976 | US3973199 Prediction differential pulse code modulation system with adaptive compounding |
| 07/27/1976 | US3971987 Gain method and apparatus for a delta modulator |
| 07/06/1976 | US3968354 Transversal digital filter for delta coded signals |
| 05/25/1976 | US3959745 Pulse amplitude modulator |
| 05/11/1976 | US3956700 Two-feedback-path delta modulation system with circuits for reducing pulse width modulation |
| 01/06/1976 | US3931596 Adaptive quantizer apparatus using training mode |