| Patents for H03M 5 - Conversion of the form of the representation of individual digits (4,193) |
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| 07/08/1980 | US4212038 Double density read recovery |
| 07/08/1980 | US4211929 Fiber-optical system for transmitting multilevel signals |
| 06/24/1980 | US4209771 Code converting method and system |
| 06/17/1980 | US4207792 Tri-state encoding circuit for electronic musical instrument |
| 05/06/1980 | CA1077170A1 Apparatus and method for transmitting binary-coded information |
| 04/22/1980 | CA1076259A1 Speed-tolerant digital decoding system |
| 04/16/1980 | EP0009557A1 Method and circuit for the simultaneous coding of two binary signal sequences into one pulse sequence, method and circuit for decoding the latter sequence, and their application to an interface transmitter-receiver |
| 04/08/1980 | CA1075361A1 Data transmission, particularly with delta modulation |
| 03/25/1980 | US4195318 High density bias linearized magnetic recording system utilizing Nyquist bandwidth partial response transmission |
| 03/25/1980 | US4195237 Unipolar to bipolar converter |
| 03/04/1980 | CA1073115A1 Apparatus, including delay means, for sampling and recovering data recorded by the double transition recording technique |
| 02/19/1980 | US4189621 CMI-encoder |
| 02/12/1980 | US4188620 Phase decoder |
| 01/29/1980 | CA1070826A1 Circuit for demodulating a pulse width modulated signal |
| 01/22/1980 | US4185320 Decoder circuit |
| 01/22/1980 | US4185249 Bipolar signal to current converter |
| 01/15/1980 | US4184045 System and method for transmission of information |
| 01/01/1980 | US4181919 Adaptive synchronizing circuit for decoding phase-encoded data |
| 12/12/1979 | EP0005808A1 Arrangement for the generation from n binary signals of digital signals with 2n levels |
| 12/11/1979 | US4178549 Recognition of a received signal as being from a particular transmitter |
| 11/27/1979 | US4176259 Read apparatus |
| 11/13/1979 | CA1066370A1 Method and apparatus for recovering data and clock information in a self-clocking data stream |
| 11/13/1979 | CA1066362A1 Methods and apparatus for reducing intelligible crosstalk in single sideband radio systems |
| 10/09/1979 | US4170715 Data communication system |
| 10/02/1979 | CA1063719A1 Phase locked loop decoder |
| 10/02/1979 | CA1063718A1 High density magnetic storage system |
| 09/19/1979 | EP0004008A1 Fast amplitude discriminator for digital signals |
| 09/11/1979 | US4167760 Bi-phase decoder apparatus and method |
| 07/31/1979 | CA1059636A1 Apparatus and method employing modified zero modulation data code |
| 07/24/1979 | US4162487 System for the transmission and reception of encoded information |
| 06/05/1979 | CA1055847A1 Method and apparatus for decoding diphase signals |
| 05/15/1979 | US4155076 CCD Gray-to-binary code generator |
| 05/08/1979 | CA1054066A1 Method and apparatus for the synchronization of a deciphering device functioning as receiver with an enciphering device functioning as transmitter |
| 04/24/1979 | US4151565 Discrimination during reading of data prerecorded in different codes |
| 04/17/1979 | US4150404 Device for transferring digital information |
| 03/27/1979 | US4146909 Sync pattern encoding system for run-length limited codes |
| 03/27/1979 | US4146743 Adaptive sampling decoder-encoder apparatus and method |
| 03/27/1979 | CA1051528A1 Data recovery system resistant to frequency deviations |
| 02/27/1979 | CA1049414A1 Combined scrambler-encoder for multilevel digital data |
| 02/13/1979 | US4139870 Circuit for demodulating a pulse width modulated signal |
| 02/13/1979 | CA1048415A1 Digital single signal line full duplex method and apparatus |
| 01/02/1979 | US4132975 Majority decision device |
| 12/19/1978 | CA1044814A1 Method and apparatus for encoding data and clock information in a self-clocking data stream |
| 11/07/1978 | US4124778 Digital frame synchronizing circuit |
| 10/24/1978 | US4122300 Data transmission system and application thereof to the transmission of analog signals and of data in a network with delta modulation |
| 08/29/1978 | CA1037608A1 Self-clocked pulse signal decoders |
| 08/29/1978 | CA1037607A2 Retrospective pulse modulation and apparatus therefor |
| 08/29/1978 | CA1037570A1 Demodulating circuitry for pulse rate modulation data reproduction |
| 04/18/1978 | US4085459 Multivalued data memory system using a charge coupled element |
| 04/18/1978 | US4085288 Phase locked loop decoder |
| 03/14/1978 | US4079195 Method and apparatus for the synchronization of a deciphering device functioning as a receiver with an enciphering device functioning as transmitter |
| 12/13/1977 | US4063235 Non-return to zero mark to non-return to zero level code converter |
| 11/01/1977 | US4056787 Self-oscillating mixer circuit |
| 10/11/1977 | US4053738 Programmable data envelope detector |
| 09/27/1977 | US4051428 Current control circuit with current proportional circuit |
| 09/20/1977 | US4049910 Digital signal transmission system |
| 08/09/1977 | US4041239 Method and apparatus for the transmission of data |
| 07/26/1977 | US4038686 Defect detection and compensation |
| 07/19/1977 | US4037257 Data clock separator with missing clock detect |
| 07/05/1977 | US4034348 Apparatus, including delay means, for sampling and recovering data recorded by the double transition recording technique |
| 06/28/1977 | US4032915 Speed-tolerant digital decoding system |
| 06/07/1977 | US4028535 Apparatus and method for generating a data code with a spectral null |
| 05/31/1977 | US4027335 DC free encoding for data transmission system |
| 05/31/1977 | US4027267 Method of decoding data content of F2F and phase shift encoded data streams |
| 05/31/1977 | US4027152 Apparatus and method for transmitting binary-coded information |
| 05/10/1977 | US4022973 Apparatus for indicating synchronization and out-of-synchronization conditions |
| 04/19/1977 | US4019140 Methods and apparatus for reducing intelligible crosstalk in single sideband radio systems |
| 04/12/1977 | US4017803 Data recovery system resistant to frequency deviations |
| 02/01/1977 | US4006304 Apparatus for word synchronization in an optical communication system |
| 01/25/1977 | US4005315 Triple state to binary converter |
| 01/04/1977 | US4001811 Method and apparatus for coding and decoding digital information |
| 01/04/1977 | US4001693 Apparatus for establishing communication between a first radio transmitter and receiver and a second radio transmitter and receiver |
| 11/30/1976 | US3995264 Apparatus for encoding and decoding binary data in a modified zero modulation data code |
| 11/23/1976 | US3993867 Digital single signal line full duplex method and apparatus |
| 10/26/1976 | US3988729 Differential pulse code modulation |
| 10/12/1976 | US3986126 Serial pulse-code-modulated retiming system |
| 09/21/1976 | US3982277 Timing-error compensation for low-speed tape systems |
| 09/21/1976 | US3982195 Method and apparatus for decoding diphase signals |
| 09/14/1976 | US3980825 System for the transmission of split-phase Manchester coded bivalent information signals |
| 08/31/1976 | US3978284 Receiver for use in a multi-level code transmission system |
| 08/24/1976 | US3976972 Prevention of non-allowed character combinations |
| 08/10/1976 | US3974523 Speed invariant decoding of digital information from a magnetic tape |
| 07/06/1976 | US3968328 Circuit for automatically correcting the timing of clock pulse in self-clocked pulse signal decoders |
| 06/29/1976 | US3967062 Method and apparatus for encoding data and clock information in a self-clocking data stream |
| 06/29/1976 | US3967061 Method and apparatus for recovering data and clock information in a self-clocking data stream |
| 06/08/1976 | US3962726 Self-clocking magnetic record sensing system |
| 06/01/1976 | US3961137 Biphase digital television systems |
| 04/06/1976 | US3949313 Demodulation system for digital information |
| 04/06/1976 | US3949297 Information signal transmitting system |
| 04/06/1976 | US3949168 Selectively clamped digital signal transmission system |
| 03/09/1976 | US3943448 Apparatus and method for synchronizing a digital modem using a random multilevel data signal |
| 03/09/1976 | US3943283 Bidirectional single wire data transmission and wrap control |
| 01/13/1976 | US3932731 Code converter |