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| Number | Title | Issue Date |
| 7337083 | Process for identification of the direction of rotation of two periodic electrical signals at the same frequency A process and apparatus for identification of the direction of rotation of two periodic electrical signals present on two electrical conductors, particularly of a three-phase power system. In this process, the signals are sampled from two conductors by two wires of ... | 02/26/2008 |
| 7310380 | Generic transmission parameter configuration A method of determining transmission parameters for a wireless transceiver is disclosed. According to the method, a state table is loaded into a transceiver. The state table includes a plurality of states, each of which has a set of transmission parameters associate... | 12/18/2007 |
| 7221711 | Multilevel data encoding and modulation technique The multilevel data encoding and modulation technique uses a pair of complementary logic sets. In its most basic form, the sets are binary sets each containing a line level for a logical one and a line level for a logical zero for a total of four logic levels. The e... | 05/22/2007 |
| 7106822 | Bidirectional synchronous interface with single time base A bidirectional synchronous interface for the reception of a first flow of digital data with a first coding from a communication channel, and for the transmission on the communication channel of a second flow of digital data with the first coding in synchrony with a... | 09/12/2006 |
| 7007186 | Systems and methods for synchronizing a signal across multiple clock domains in an integrated circuit An integrated circuit configured to capture an input signal to produce an output signal. The input signal is synchronized with a first clock signal. The output signal is synchronized with a second clock signal having a second frequency different from a first frequen... | 02/28/2006 |
| 6985094 | Method for coding a data stream The present invention relates to a method for coding a data stream, in which the digital sum value of the coded data stream should be close to zero and two alternative code words can be used for the coding at least for some of the possible data values. It is the obj... | 01/10/2006 |
| 6956923 | High speed phase detector architecture A high speed phase detector circuit operating at a clock speed equal to one-half an input data rate (i.e. a half-rate clock) provides phase information and transition information from incoming serial data. The high speed phase detector circuit samples the incoming s... | 10/18/2005 |
| 6850225 | Color-coded tactile data-entry devices A data-entry device having manually operable input means arranged in zones for operation by corresponding fingers of a user. The device includes means for color coding such that each zone is assigned a color and successive zones display colors ordered according to t... | 02/01/2005 |
| 6628213 | CMI-code coding method, CMI-code decoding method, CMI coding circuit, and CMI decoding circuit A CMI coding method, a CMI decoding method, a CMI coding circuit, and a CMI decoding circuit which do not adversely affect a main signal to be CMI-coded and which allow a high-speed asynchronous signal to be always transmitted by Coding Rule Violation, wi... | 09/30/2003 |
| 6492919 | Circuit system suitable for codifying NRZ type binary signals into CMI type binary signals A circuit system suitable for codifying NRZ type binary signals into CMI type binary signals includes a plurality of bistable means, an EXOR type logical gate, a presynchronization device and a combinatory logic device capable of creating a CMI type binar... | 12/10/2002 |
| 6084535 | System and method for generating many ones codes with hamming distance after precoding A system comprises an encoder, a precoder, a PRML channel, a detector, and a decoder. An input signal is received by the encoder. The encoder generates a code string by adding one or more bits and outputs the code string to the precoder. The encoder appli... | 07/04/2000 |
| 6028540 | Encoding/detection method for digital data A binary data encoding and decoding technique that alternates between starting polarities of a signal for both each occurrence of a binary 1 and each occurrence of two or more consecutive binary 0's. To encode a binary 1, the signal is one polarity for on... | 02/22/2000 |
| 5699061 | Method and apparatus for generating NRZI code with limited runs of ones An 8.fwdarw.10 modulator stores a conversion table, and, when receiving 8-bit data as an address, outputs 10-bit data stored at the received address as a modulated code. The conversion table of the 8.fwdarw.10 modulator is constructed such that each NRZI-... | 12/16/1997 |
| 5510786 | CMI encoder circuit A Coded Marked Inversion (CMI) encoding circuit having a completely synchronous and digital implementation for encoding a stream of digital data in non-return-to-zero (NRZ) format into the CMI format. The encoding circuit includes a clock for providing a ... | 04/23/1996 |
| 5473329 | Performance monitoring for loops Loop Performance Monitoring (LPM) for DDS loops is described. Even though DDS loops have Intentional Bipolar Violations (BPVs), a Loop Coding Violations (LCVs) detection strategy based on further processing of BPVs is described. By monitoring LCVs a local... | 12/05/1995 |
| 5394145 | Performance monitoring for loops Loop Performance Monitoring (LPM) for DDS loops is described. Even though DDS loops have Intentional Bipolar Violations (BPVs), a Loop Coding Violations (LCVs) detection strategy based on further processing of BPVs is described. By monitoring LCVs a local... | 02/28/1995 |
| 5248969 | Phase comparing and CMI/NRZ decoding apparatus A phase comparing and CMI/NRZ decoding apparatus for accomplishing bit synchronization of CMI data by producing rising transition or falling transition of the clock pulse at the center of unit bit interval of incoming CMI data, by use of the clock pulse h... | 09/28/1993 |
| 5243628 | Encoding method and code processing circuitry A novel encoding method which facilitates handling at the time of demodulation (decoding) and is capable of further alleviating a burden imposed on a demodulation (decoding) circuit. When an input NRZ code signal is at, for instance, a logical "0" level d... | 09/07/1993 |
| 5144469 | Method for the transmission of data between two stations by means of optical waveguides In a system wherein a main channel of data is transmitted between two stations by means of an optical waveguide, an additional optical channel may be transmitted. Bits of the additional optical channel are inserted into the main channel at a transcoder in... | 09/01/1992 |
| 5144305 | Transmission arrangement comprising a block code encoded main channel and an auxiliary channel A block encoded main signal and a balanced block encoded auxiliary signal are combined on a transmission path. The combined signal includes at least one block of encoded main channel signal alternating with one bit of the auxiliary channel signal. The blo... | 09/01/1992 |
| 5113186 | Apparatus for converting an alternate mark inversion signal to unipolar signals with frequency dependent amplification The apparatus converts an AMI signal into three unipolar signals by selectively amplifying the AMI signals so that higher frequency components are amplified greater than lower components and then comparing the AMI signal with a positive and negative thres... | 05/12/1992 |
| 5113187 | CMI encoder circuit A circuit having a completely synchronous and digital implementation for encoding a stream of digital data (NRZ form) into the coded marked inversion (CMI) format. The circuit includes a state machine having a predetermined number of defined legal and ill... | 05/12/1992 |
| 5107263 | NRZ to CMI (II) encoding circuit A NRZ/CMI (II) code converter comprising a D-type flip-flop for retiming a series of NRZ data bits received thereto with a clock synchronized therewith, an OR-gate connected to said one output of the D-type flip-flop to compose space bits of a series of s... | 04/21/1992 |
| 5086436 | Coded transmission system with initializing code A coded transmission system wherein each bit of transmitted data having a logical value is coded depending on a coded result of a preceding bit. The coded transmission system contains a sender-side apparatus, a transmission line, and a receiver-side appar... | 02/04/1992 |
| 4951050 | 2:1 Voltage matrix encoded I/O transmission system Encoding and decoding circuits, utilizing high speed ECL-like logic, simultaneously transmit and receive multiple binary signals via a single I/O pin.... | 08/21/1990 |
| 4897652 | Method of coding numbers in binary form A coding method uses a pseudo-logarithmic compression law approximated by a straight line segment curve. Its code word on n+1 binary digits, where n is a positive invariant integer, has a lefthand part made up of a variable number p of binary digits havin... | 01/30/1990 |
| 4885582 | "Simple code" encoder/decoder A Simple Code encoder/decoder converts a ternary, or bipolar, signal having a strong clock component into a binary signal while maintaining the strong clock component for processing with digital equipment. The Simple Code is high for each positive value o... | 12/05/1989 |
| 4873524 | Decoding unit for CMI-encoded signals Decoding unit for CMI-encoded input signals. A signal having 0/1 transitions is first derived from a signal. A 0/1 transition occurs in a CMI-signal as the result of encoding a binary zero or two consecutive binary ones. In the latter case the 0/1 transit... | 10/10/1989 |
| 4860009 | Bidirectional multiframe converter for data communications systems A bidirectional device converts a series of data bits partitioned into first group of frames corresponding to a first type of interface into second groups of frames having a second type of interface. The converter first converts signals from a device oper... | 08/22/1989 |
| 4843391 | System for analog-digital-analog conversion The invention is applicable to delta modulation. A method of codifying the bit-stream for more efficient storage and transmission is disclosed. The number of pulses from the a-to-d converter is counted, per batch of B clock beats. The count, or tally valu... | 06/27/1989 |
| 4837782 | CMI decoder In a digital communication system, a CMI (Coded Mark Inversion) decoder for extracting an optimum sampling timing from a CMI coded input signal so as to NRZ (Non-Return to Zero) format the input signal. A circuit for producing clock signals which are indi... | 06/06/1989 |
| 4808970 | Decoding device for CMI code In a device for CMI code decoding, a detector of certain transitions between pairs of the coded signal delivers a signal for synchronizing a clock recovery circuit. A decoding circuit receives the coded signal and the clock signal and delivers the decoded... | 02/28/1989 |
| 4761635 | Method of coding digital information organized in frames using a CMI code, a device for implementing this method and application to servitude information for a high capacity digital network A method is provided for coding in the CMI code digital information organized in frames, wherein each frame locking word V, chosen equal to 1, is placed in the last position in the frame. The CMI code is violated at the position of said word V and, for ke... | 08/02/1988 |
| 4728929 | Method and apparatus for encoding binary data A method and apparatus for encoding binary data in which the method includes the steps of converting data words each containing N data bits to channel words each containing M data bits, and producing NRZI code data from the channel words. In the convertin... | 03/01/1988 |
| 4626826 | Method and apparatus for encoding and decoding an NRZI digital signal with low DC component and minimum low frequency components A converted digital signal is provided in an NRZI (non-return to zero, inverted) code with a zero DC component and with a maximum predetermined number of bits between level transitions in the signal. The base digital signal is divided into m-bit base word... | 12/02/1986 |
| 4577180 | Digital data converting method and apparatus thereof A digital signal is divided into a series of base words with each m bits of data. Each base word is converted to a converted word having n bits of data, wherein each of n and m is an integer and n is greater than m and the converted word has a predetermin... | 03/18/1986 |
| 4562422 | CMI Decoder The invention involves a decoder for converting CMI-coded signals into binary signals. Existing decoders of this type have a comparatively elaborate design and high power consumption. The invention teaches an improved decoder which has an AND gate and a N... | 12/31/1985 |
| 4556868 | CMI Decoder The invention relates to a decoder for the translation of CMI coded signals into binary signals. The invention discloses a decoder containing three emitter-coupled differential amplifiers with two stages each, each of the first and the second differential... | 12/03/1985 |
| 4503546 | Pulse signal transmission system A two-level alternate mark inversion signal transmission system wherein binary pulses of "1" and "0" levels are converted into a pulse signal in which one coded information value has its polarity inverted at a period T and the other has its polarity rever... | 03/05/1985 |
| 4442528 | Pulse communication method and system using CMI to 3-level CMI conversion This invention provides a pulse communication method and system capable of converting a data pulse signal into a CMI code and then converting it further into a 3-level CMI signal having a positive and a negative pulse including a data signal and a clock s... | 04/10/1984 |
