64results about "Individual digits conversion" patented technology

The invention discloses a DALI (Digital Addressable Lighting Interface) data frame decoding method for Manchester encoding, which solves the problems of poor universality and high bit error rate caused by a fixed clock in the traditional method. The method comprises the following steps: receiving a DALI frame containing a start bit, a data bit and a stop bit; identifying a start bit, measuring the low level length of the start bit for multiple times, taking extreme values Tmax and Tmin, and checking the ratio (1lt; tmax / Tminlt, Tmax / Tminlt; 1 + n) and then T = (Tmax + Tmin) / 2 is calculated; setting two judgment intervals [T-nT, T + nT) and [2T-nT, 2T + nT) (0lt; nlt; 0.5) judging that the duration of the adjacent jump edge is T or 2T; counting edge overturning times in a 2T window from the middle moment of a data bit, keeping a logic value unchanged in two times, and performing negation in one time; and a stop position is detected through 4T in a non-jump manner. Through dynamic time sequence calibration and adaptive decoding, the decoding reliability in a complex environment is improved, the bit error rate is reduced, and the stability and universality of data transmission of the intelligent lighting system are enhanced.

The invention relates to a Manchester coded signal decoding method and a Manchester coded signal decoding system, and belongs to the field of electronic information, communication and power system automation. A plurality of clocks with the same frequency and different phases are generated according to Manchester encoding signals, the clocks are used for sampling the signals, a phase-shifting clock sampling method is used, dependence on a high-frequency clock is reduced, most interference in communication signals is determined to be eliminated according to a majority voting strategy for sampling results, and the accuracy of the signals is improved. And the seriously distorted signals are corrected according to special value enumeration, so that the interference of signal duty ratio distortion and burrs is reduced, and the decoding reliability is further improved. And finally, determining an original data stream of the signal according to the two level states of each code element. The method is used for decoding high-speed and ultra-high-speed Manchester encoding signals under the conditions of no high-frequency clock, poor data signal quality or unstable clock, and simultaneously realizing self-adaptive communication of different encoding formats.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, an ambient Internet-of-Things (IoT) device may receive configuration information indicating resources associated with an uplink trigger message that initiates a communication session between the ambient IoT device and a network device. The ambient IoT device may transmit the uplink trigger message to the network device using the resources associated with the uplink trigger message. Numerous other aspects are described.

A device may receive signaling that includes a preamble having a first subset of bits of the set of bits and a payload having a second subset of bits. In some examples, the second subset of bits may be encoded according to a Manchester encoding scheme. The second subset of bits may include fewer bits than the first subset of bits. In some examples, less than a threshold quantity of bits of the first subset of bits includes a same bit value, and each bit of the threshold quantity of bits is consecutive. The device may detect the preamble of the received signaling, and decode the payload of the received signaling including the second subset of bits (e.g., Manchester encoded subset of bits) in response to the detected preamble of the received signaling.

A device may receive signaling that includes a preamble having a first subset of bits of the set of bits and a payload having a second subset of bits. In some examples, the second subset of bits may be encoded according to a Manchester encoding scheme. The second subset of bits may include fewer bits than the first subset of bits. In some examples, less than a threshold quantity of bits of the first subset of bits includes a same bit value, and each bit of the threshold quantity of bits is consecutive. The device may detect the preamble of the received signaling, and decode the payload of the received signaling including the second subset of bits (e.g., Manchester encoded subset of bits) in response to the detected preamble of the received signaling.

Examples of the invention relate to first and second communication devices for the transmission and reception of binary sequences in a communication system. Therefore, the first communication device (100) transmits a communication signal (510) to a second communication device (300), and the communication signal (510) comprises a first binary sequence which is formed based on a second binary sequence. The second binary sequence is in turn formed based on: permute a seed sequence s 0 or a binary complement of the seed sequence s 0 with a first permutation function p; extend or truncate the permuted seed sequence s 0 or the permuted binary complement of the seed sequence s 0 to a length L'; and permute the extended or truncated seed sequence s 0 or the extended or truncated binary complement of the seed sequence s 0 with a second permutation function π. Furthermore, examples of the invention also relate to corresponding methods and a computer program.

In an aspect, a method of coding a data stream is provided. In an aspect, the method includes mapping, by a data stream encoder, bits into one or more delimiters for the data stream while limiting a maximum run-length of a same polarity of bits in the data stream to be no more than 5. Each of the one or more delimiters include a zero bit and a one bit appended to an 8b / 10b codeword of one or more 8b / 10b codewords in the data stream. In an aspect, the method further includes transmitting, by a transmitter, the one or more delimiters in the data stream.

The invention discloses a Manchester code receiving and storing method and system, and the method comprises the steps: firstly converting a serial data signal of a Manchester code into a parallel signal, and carrying out the decoding of the serial signal, enabling the decoding operation to be isolated from a clock signal, weakening the dependence on the clock synchronization in a decoding process, and improving the decoding efficiency. The method is suitable for a scene that a serial signal does not have accurate synchronous clock input, a high-order address of a storage address is defined by judging packet header data, a low-order address of the storage address is determined by packet length, different packet header data are stored in corresponding addresses, classification and address division storage of received data frames according to packet header information is realized, and the storage efficiency is improved. The method can be applied to various bus transmission data protocols, is suitable for various FPGA development, and has good universality and application prospects.

The application belongs to the field of chip interconnection communication, and particularly discloses a chip interconnection communication method and system based on Manchester coding, which comprises the following steps: a master control device generates and sends a communication frame, the physical layer of which adopts Manchester coding, logic 1 is high-to-low transition, and logic 0 is low-to-high transition, and the frame start / end is defined by a specific high-low level sequence; the data link layer of the communication frame comprises a synchronization code, an address field, a control field, a data field and an end code, the control field comprises pin intervals and quantity identification, and a clock is sent simultaneously to synchronize the slave device; the slave device decodes the received signal, determines the target pin range according to the identification when the address is matched, and sets the pin level according to the data field. The application improves the communication rate and efficiency, simplifies the wiring, and adapts to the chip interconnection requirements in multiple scenes.

The invention relates to a method for generating an efficiently transmittable bit sequence with a limited degree of discrepancy and a limited run length. The proposed method allows a particularly efficient transmission of data over a transmission channel. Compared with the prior art, one of the advantages of the invention is that the physical behavior on the transmission channel can be certainly controlled all the time although the resource demand is reduced. Thus, according to the proposed method, bit errors are few, and transmit errors can be corrected efficiently (i.e., with little technical effort). Furthermore, the encoder used is designed to have a minimum number of gates, and interlacing is implied in the proposed method, which ensures that so-called burst errors can be particularly advantageously corrected.

A Physical Layer (PHY) device, for use in an Ethernet network in a vehicle, includes a link interface and a transceiver. The link interface is configured to connect to a full-duplex Ethernet link. The transceiver is configured to communicate over the full-duplex Ethernet link in a first direction using a High-Data-Rate (HDR) signal having a first data rate, and to communicate over the full-duplex Ethernet link in a second direction, opposite to the first direction, using a Low-Data-Rate (LDR) signal having a second data rate, lower than the first data rate. A frequency spectrum of the LDR signal is contained within a frequency spectrum of the HDR signal.

The invention discloses a multi-rate controllable 1553 bus controller module, which belongs to the field of avionics and data buses and comprises a 1553 protocol processing module, a Manchester encoder, a Manchester decoder, a sending channel, a receiving channel and an internal clock management unit. The internal clock management unit generates a core clock signal corresponding to a target communication rate according to a signal input by the external rate control pin; and the Manchester encoder / decoder performs data encoding and decoding by using the core clock signal, so that the adjustable switching of the communication rate among 1Mbps, 2Mbps and 4Mbps is realized. Flexible configuration of the communication rate is achieved through hardware pin control, the problems that a traditional 1553 controller is fixed in rate and lack of flexibility are solved, and the controller has the advantages of being high in compatibility, low in cost and high in integration degree.

A Physical Layer (PHY) device (36), for use in an Ethernet network in a vehicle (24), includes a link interface (52) and a transceiver (48). The link interface is configured to connect to a full-duplex Ethernet link (40). The transceiver is configured to communicate over the fullduplex Ethernet link in a first direction using a High-Data-Rate (HDR) signal having a first data rate, and to communicate over the full-duplex Ethernet link in a second direction, opposite to the first direction, using a Low-Data-Rate (LDR) signal having a second data rate, lower than the first data rate. A frequency spectrum of the LDR signal is contained within a frequency spectrum of the HDR signal.

An electronic device for decompressing compressed data to recreate the original data includes a first string copying engine and a second string copying engine. The first string copying engine processes a first string copying command by: obtaining a first string from the recreated original data; and appending the first string to the recreated original data. The second string copying engine processes a second string copying command by: checking the dependency of the second string copying command on the first string, and stopping further processing of the second string copying command when the dependency is found, until the first string copying engine appends the corresponding portion of the first string to the recreated original data. The second string copying engine processes the second string copying command by obtaining a second string from the recreated original data and appending the second string to the recreated original data.

A method of data transmission includes transmitting a magnetic signal that is modulated with the bit stream, the magnetic signal having a nominal frequency and being formed of a high frequency and a low frequency, the nominal frequency being the average frequency of the magnetic signal. The bit stream is modulated onto the magnetic signal by encoding the bit stream into the magnetic signal, where each bit in the bit stream is represented by a transition between adjoining data symbols formed of K repetitions of of a first state or a second state. The first state of the pair of states includes M / 2 cycles of the nominal frequency with a signal at the high frequency and M / 2 cycles of the nominal frequency with a signal at the low frequency. The second state is complementary to the first state.

The present disclosure provides techniques and apparatus for decoding of a biphase signal in a wireline modem. An example technique involves receiving a biphase modulated signal from a surface acquisition module via a communication link between the downhole telemetry module and the surface acquisition module. A linear modulated-based representation of the biphase modulated signal is generated. The linear modulated-based representation of the biphase modulated signal is processed to obtain data associated with the biphase modulated signal.

This invention discloses a decoding method, apparatus, module, and computer-readable storage medium. The decoding method includes obtaining an initial symbol period and calculating a sampling interval based on the initial symbol period. It involves sampling the transition edges of the encoded data within the sampling interval, calculating the actual symbol period based on the sampling interval, updating the value of the sampling interval based on the actual symbol period, and continuing to sample the transition edges of the encoded data within the updated sampling interval. Finally, it involves decoding the encoded data based on the sampling results. The decoding method, apparatus, module, and computer-readable storage medium of this invention can dynamically adjust the sampling interval for each symbol. For Manchester encoding affected by noise, even when the period is inaccurate or the duty cycle is not 50%, it can still successfully identify symbols, improving the decoding success rate.

The application provides a kind of optical module manchester code processing method, system and single-chip microcomputer, belongs to data processing technical field.The method comprises: the analog-digital converter receives to be processed manchester code;The analog-digital converter oversamples to the manchester code to be processed, obtains the processed manchester code of preset bit number;The analog-digital converter writes the processed manchester code into the memory;The processing unit reads N in the memory The processed manchester code, wherein N is positive integer;The processing unit calculates the eigenvalue of N The processed manchester code;The processing unit determines the binary signal corresponding to N The processed manchester code according to the eigenvalue respectively;The processing unit determines decoding information according to each binary signal.The method of the application solves the problem that the accuracy of the processing process of single-chip microcomputer on manchester code is low.

The present disclosure provides techniques and apparatus for decoding of a biphase signal in a wireline modem. An example technique involves receiving 902 a biphase modulated signal from a surface ac

A transmitter (100) includes an encoder (110) configured to divide a first number of binary input bits of an input data signal into a first bit group (BTG1) and a second bit group (BTG2), generate a first intermediate bit group (IBTG1) and a second intermediate bit group (IBTG2) by manipulating (120) the first bit group and the second bit group differently based on a value of the first bit group, and generate a first symbol group (SG1) and a second symbol group (SG2) by encoding (170,180) the first intermediate bit group and the second intermediate bit group, each of the first symbol group and the second symbol group including a plurality of symbols, and each of the plurality of symbols having three different voltage levels. The transmitter includes a driver (190) configured to generate an output data signal (TX_OUt) by concatenating the first symbol group and the second symbol group.

The application discloses a Manchester decoding method and device and a battery management system applying the same. The Manchester decoding method comprises the following steps: obtaining a first signal and a second signal according to Manchester coding; the width of a high level pulse in the first signal is smaller than that of a high level pulse in the Manchester coding, and the width of a high level pulse in the second signal is smaller than that of a low level pulse in the Manchester coding; the transition moment of a to-be-decoded element in the Manchester coding is located between two adjacent high level pulses of the first signal and the second signal; the number of 1s and / or 0s in each first reference width before and after the transition moment is counted at a fixed frequency; and the current element is decoded according to the number of 1s and / or 0s in each first reference width before and after the transition moment. The Manchester decoding method can well cope with the situation that the received signal is distorted in pulse width and has burr distortion.

The invention discloses a Manchester code efficient decoding method for an electromagnetic flaw detection logger, which comprises the following steps: step 1, Manchester code single-ended signal acquisition and underground pretreatment, step 2, single-ended signal conditioning, step 3, double-edge interruption triggering and composite synchronous head identification, step 4, pulse width timing recording, and step 5, pulse width decoding. Step 6, decoding based on pulse width; step 6, verifying and outputting decoded data; by adopting a double-edge triggering interruption mode, interruption can be triggered at the rising edge and the falling edge of a Manchester code single-end signal, and compared with traditional single-edge triggering interruption, the interruption waiting time is shortened. Meanwhile, the pulse width is recorded in real time through the timer module, decoding is directly carried out based on the pulse width, complex clock synchronization and signal sampling processing processes are not needed, the decoding process is greatly simplified, the decoding efficiency is effectively improved, and the requirement of electromagnetic flaw detection logging operation for data real-time processing can be met.

It is provided a method for encoding complex data. The method includes the steps of: obtaining an input signal made up of a series of numerically represented samples; determining a time frame of the input signal to process; applying a first window function on data in the time frame, resulting in first windowed data, wherein the first window function tapers sample magnitude towards the edges of the first window function; performing a windowed complex discrete Fourier-related transform on the first windowed data, resulting in frequency-domain data including a plurality of coefficients, keeping only the real part or the imaginary part of each coefficient; quantizing the frequency domain data resulting in quantized data; outputting the quantized data as encoded data; and repeating the method, wherein each subsequent iteration of the step of determining a time frame includes determining a time frame that overlaps in time with a preceding time frame.

A kind of manchester decoding method based on timing offset algorithm, including filtering module, signal waveform conversion module and manchester decoding module, the timing offset algorithm is implemented in manchester decoding module;After input signal passes through filtering module and removes interference signal, signal waveform is converted into baseband signal waveform by signal waveform conversion module, then is sent into manchester decoding module, microprocessor in manchester decoding module starts reading signal by external interrupt, while reading signal, real-time baseband signal pulse width is calculated using timing offset algorithm, according to the calculation result, the timer initial value of the collected baseband signal is revalued, the dynamic adjustment of microprocessor to baseband signal acquisition frequency is realized, finally, according to manchester encoding format, the collected baseband signal is decoded to obtain the final decoding data.The present application improves decoding speed, accuracy and environmental adaptability.

A motor controller with a data bit expansion mechanism is provided. The motor controller sets a plurality of pieces of target waveform characteristic data that are used respectively within a plurality of magnetic pole position time intervals to output a motor control output instruction. The motor controller, according to each of the plurality of pieces of target waveform characteristic data, generates a plurality of pieces of sub-target waveform characteristic data in a bit number expansion instruction. The plurality of pieces of sub-target waveform characteristic data are used respectively within a plurality of bit expansion time intervals. The bit number of each of the plurality of pieces of sub-target waveform characteristic data is smaller than an upper limit bit number. The motor controller generates a plurality of bit-expansion waveforms according to the bit number expansion instruction for controlling a motor.

A method is for generating a bit sequence that can be transmitted efficiently and has a limited disparity and a limited run length. The proposed method allows data to be able to be transmitted particularly efficiently on a transmission channel. The physical behavior on a transmission channel can be deterministically controlled despite a reduction in resource requirements. Thus, according to the proposed method, bit errors are minimal and a transmission error can be corrected efficiently, i.e. with minimal technical effort. Furthermore, the encoders used are designed with a minimal number of gates, and the proposed method implicitly includes a form of nesting that allows so-called burst errors to be corrected particularly advantageously.