45results about "Pulse conversion" patented technology

The invention relates to the technical field of digital information transmission, and discloses a Morse code encoding and decoding method and system based on artificial intelligence, and the method comprises the steps: converting text information into an initial dot symbol sequence according to a standard Morse code mapping table, collecting channel characteristic parameters and inputting the channel characteristic parameters into the lightweight decision tree model to determine a time sequence characteristic weight vector; optimizing the initial dot-drawn symbol sequence to generate an optimized dot-drawn symbol sequence; calculating an absolute transmission time length, dynamically adjusting a transmission power and a waveform envelope parameter in combination with a multipath fading coefficient of a channel, and generating a coded signal; and demodulating the received signal to obtain a time sequence feature weight vector used by a sending end, performing envelope detection on the baseband signal, segmenting according to the time sequence feature weight vector to obtain a dot symbol sequence, and converting according to a standard Morse code mapping table to obtain decoded text information. According to the method, the encoding and decoding problems of the Morse code in a dynamic environment are solved, and the method can be operated on edge equipment.

The application discloses a kind of self-adapting downsampling time series encoding method and system.The method includes providing step prediction module based on learnable network, dynamically generating prediction window parameters based on the global feature of multidimensional time series signal, generating smoothing window function according to the prediction window parameters, weighting multidimensional time series signal and smoothing window function to obtain multiple groups of soft block signals, performing two-dimensional self-attention calculation on each group of signals and extracting feature vectors, and outputting sequence representation after reorganization through global self-attention calculation.The system corresponds to each corresponding functional module, including step learner based on learnable network, and introducing regularization term to optimize training loss.The application gets rid of artificial experience dependence, realizes the adaptive downsampling of time series signal, avoids boundary information loss and extreme downsampling strategy, improves encoding efficiency, accuracy and universality, and can be widely applied to astronomical gravitational wave monitoring, medical treatment, industrial and other cross-domain time series signal processing scenarios.

Communications method and apparatus include encoding information into a high-peakedness designed pulse train, converting the designed pulse train into a low-peakedness signal suitable for modulating a narrowband carrier to generate a physical communication signal with desired spectral and temporal properties, and generating and transmitting the physical communication signal. The communications method and apparatus also include receiving and demodulating the physical communication signal, and further converting the demodulated signal into a high-peakedness received pulse train corresponding to the designed pulse train, so that the encoded information may be extracted from the received pulse train.

The embodiment of the application discloses a kind of digital isolator and digital signal transmission method, the technical scheme of the embodiment of the application is by encoding circuit the rising edge and the falling edge of input digital signal are encoded into first pulse sequence and second pulse sequence respectively, by including multiple first pulse groups with time interval being first length characterizing first pulse sequence, multiple second pulse groups with time interval being second length characterizing second pulse sequence, so that more information is added in encoding signal, and the corresponding encoding information of rising edge and falling edge is transmitted through isolating element, while realizing the encoding and transmission of input digital signal, the anti-interference ability of encoding information and the anti-interference performance of digital isolator are improved.

The present disclosure proposes a method for getting a binary sequence representing the sampling of an underlying binary code sequence. The proposed approach builds the target sequence by concatenating sets of samples taken from another reference sequence representing the sampling of the same underlying code but at different sampling rate and / or initial phase than the target sequence. The main idea is that both the target and the reference sequences share sets of samples that are common, sample by sample, in both sequences, so that such sets of samples can be reused to build the target sequence, and, at each transition between sets, one or several reference samples must be either duplicated or discarded. The present disclosure explains how to compute the indexes of those common sets and shows how the samples at the transitions need to be managed. The main advantage of this approach is to allow computational savings.

The embodiment of the utility model provides a decoding circuit, a digital signal edge monitoring device using the decoding circuit, a frequency conversion equipment controller and frequency conversion equipment, and belongs to the technical field of electronic circuits. The decoding circuit comprises a hysteresis circuit and a monostable filtering time circuit and is used for detecting the edge of a digital signal and stably outputting a digital output pulse with a fixed width, and the pulse width of the digital output pulse depends on the filtering time of the monostable filtering time circuit.

A battery management system includes a first battery cell controller, a second battery cell controller each monitoring a plurality of battery cells, and an electrically isolated transmission line providing a point-to-point signal transmission path between the first battery cell controller and the second battery cell controller. At least one of the first battery cell controller or the second battery cell controller includes at least one encoding / decoding circuit that encodes data in accordance with a multi-level encoding technique for transmission along the signal transmission path as a serial data stream, including modulating the serial data stream on at least three discrete signal levels at a predetermined and fixed data pulse frequency, encoding a plurality of data nibbles of the serial data stream into a data packet, the data packet including a plurality of symbols structured and arranged to have at least four consecutive chips per symbol, wherein the at least four consecutive chips per symbol of the data packet include a DC balance line code in each of the symbols.

This invention relates to the field of analog integrated circuit technology, and particularly to a magnetically isolated encoding / decoding circuit, including a transmitter circuit, an isolation transformer, and a receiver circuit. The transmitter circuit includes a logic control circuit, an oscillator, a pulse generation circuit, and a drive circuit. The receiver circuit includes a pulse filtering circuit, a bandgap reference circuit, a comparator circuit, an inverter, and a D flip-flop. This invention, by adding amplitude variation, further pulls up high pulse signals and pulls low pulse signals to ground, filters out common-mode signals, and adds an additional refresh pulse to help monitor signals in real time, greatly improving the anti-interference and reliability of signal transmission, and effectively protecting power switching devices.

The present invention relates to a method for generating coding tables for sensor signals of a vehicle, comprising: detecting the occurrence frequencies of the sensor signals; dividing the sensor signals into different levels according to the occurrence frequencies, wherein the numbers of the levels correlate with the number of coding bits, whereby with increasing occurrence frequency the numbers of the levels become smaller and the corresponding number of coding bits decreases;Assigning binary codes to the sensor signals, wherein the binary codes have a single middle bit position, as well as front bit positions and back bit positions, wherein a first bit value is written into the middle bit position, the number of front bit positions representing the level, and a second bit value is written, wherein the number of back bit positions depends on the number of front bit positions, and the value of the sensor signal is represented by means of the bit value of the back bit positions; generating a coding table to establish a correspondence between the sensor signals and the binary codes. The present invention further relates to a corresponding coding method, a corresponding decoding method, a corresponding computer program product, and a corresponding processing device. This makes it possible to reduce the internal memory required for recording the sensor signals.

An encoding apparatus and a method for providing maximum transition avoidance (MTA), direct current (DC) balance, and run-length limited codes are provided. An apparatus including a transmitter connected to a signal line, wherein the transmitter includes an encoder configured to encode data bits to be transmitted through the signal line, according to pulse amplitude modulation (PAM), to convert the data bits into data symbols having multiple voltage levels. The encoder includes a logic circuit configured to provide look-up tables indicating a correlation between the data bits and the data symbols and a control circuit configured to selectively control logic operations of the logic circuit that generates the look-up tables. The look-up tables include mappings related to operation requirements of the encoder, and the operation requirements of the encoder includes a DC balance requirement and a run-length limit requirement of data symbols.

Method and system for weighting the amplitude of an event in a time -based code. The time-based code is divided into time intervals. Each of the time intervals of the time-based code corresponds to a digit in the received signal. Each digit of a first state of the received signal is expressed as a event occurring at a first time within the corresponding time interval of the time - based code. Each digit of a second state of the received signal is expressed as a event occurring at a second time within the corresponding time intervals of the time -based code, the first time is distinguishable from the second time. All of the states of the digits in the received signal are represented by events in the time-based code. The weighting is performed as a function of the timing of other events in the time-based code signal.

An encoding / decoding method and apparatus, and a data transmission method are provided, and relate to the field of communication technologies, to reduce a bit error rate during encoding / decoding using PAM3. The method includes: encoding to-be-encoded 3-bit data [A, B, C], to obtain a 4-bit encoded parity signal [S1, S2, S3, S4] that satisfies S1 = A • (B + C); generating a PAM3 signal in two UIs based on the 4-bit encoded parity signal, and sending the PAM3 signal; obtaining the PAM3 signal in the two UIs, and determining a 4-bit decoding parity signal based on the PAM3 signal in the two UIs; and decoding the 4-bit decoding parity signal based on preset decoding logic, to obtain the 3-bit data. The preset decoding logic can ensure that when a bit error in one UI occurs, a bit error occurs in a maximum of 2-bit data in 3-bit data obtained through decoding. In this case, in comparison with a bit error in a maximum of 3-bit data in a related technology, a bit error rate is low.

The application discloses a kind of control signal transmission method, system, computer equipment and storage medium.The method comprises: obtaining first control signal;According to the first control signal, the encoding control signal of lightweight data format is generated;The encoding control signal is outputted.The control signal transmission method, system, computer equipment and storage medium of implementation of the present application, since it can be converted into the encoding control signal of lightweight data format after obtaining control signal and then output, to reduce the storage size required in control signal transmission.

Communications method and apparatus include encoding information into a high-peakedness designed pulse train, converting the designed pulse train into a low-peakedness signal suitable for modulating a narrowband carrier to generate a physical communication signal with desired spectral and temporal properties, and generating and transmitting the physical communication signal. The communications method and apparatus also include receiving and demodulating the physical communication signal, and further converting the demodulated signal into a high-peakedness received pulse train corresponding to the designed pulse train, so that the encoded information may be extracted from the received pulse train.

The application discloses a kind of based on deep neural network's Morse code signal decoding method, comprising the following steps: S1, model training stage: the training data set comprising Morse code signal sample and corresponding label is constructed;Design deep neural network architecture, utilize training data set to optimize network weight, generate Morse code signal decoding model: comprising the following steps: S1.1, signal sample is generated;S1.2, model training;S2, real-time decoding stage: S2.1, STFT conversion;S2.2, signal segmentation;S2.3, data normalization;S2.4 is obtained by model inference Multi-channel sentence-level decoding result;S2.5 is obtained by code stream processing Multi-channel continuous decoding result.By the above mode, the present application can realize the end-to-end decoding of multiple Morse code signals simultaneously by combining time-frequency conversion with deep neural network, effectively solving the problem of continuous decoding of Morse code signals with different code rates in complex electromagnetic background environment.

The invention discloses a 1T-2B code conversion circuit based on a memristor, and belongs to the technical field of memristors. Comprising memristors, excitation voltage sources V, a transistor and a direct-current voltage source, the memristors are a three-value input memristor Min and a two-value output memristor Mout, and the number of the excitation voltage sources is six, namely V0, V1, V2, V3, V4 and V5; the memristors are respectively M0, M1, M2, M3, M4 and M5; the transistors are respectively T0, T1, T2, T3, T4 and T5; the direct current voltage sources are Vdd0, Vdd1, Vdd2, Vdd3, Vdd4 and Vdd5 respectively; the invention designs a 1T-2B code conversion circuit based on a memristor. The design shows remarkable advantages in a memristor storage and communication system: multiplication of storage density, improvement of data transmission rate and enhancement of anti-interference capability are realized, and key technical support is provided for a next-generation high-efficiency computing and communication system.

The invention discloses a symmetric coding method based on 4HPU, and the method comprises the following steps: inputting initial data which is a set of discrete natural numbers; the method comprises the following steps: defining a mapping relation between a basic unit and a natural number to obtain a 4HPU code: defining a basic unit structure, establishing a hierarchical stacking rule, and defining that a basic unit of the basic unit structure is formed by arranging numbers 0 or 0 and 1 with four bit widths; performing symmetric coding on the 4HPU code; generating a corresponding natural number data set according to the natural number; and obtaining a corresponding natural number data set according to the input initial data. Compared with the prior art, the method has the advantages that natural numbers are coded, coding is expressed by adopting the multiple of 4 and is expressed by 0 and 1, and the problems of irreversible paths, high power consumption and poor compressibility caused by a traditional binary dense structure are solved.

This invention provides a jitter generation circuit and a jitter propagation and tolerance measurement circuit, relating to the field of jitter injection and detection technology. The jitter generation circuit includes: an interface circuit for receiving a target code pattern and a target jitter; a sequence calculation module for calculating the injected jitter code pattern based on the target code pattern and the target jitter; a sampler for discretizing the flipped time series to obtain a discretized time series and generating an output sequence; and a clock module for generating a clock signal for the sampler. The jitter propagation and tolerance measurement circuit includes: a transmitter for generating and transmitting a jittered signal; a circuit under test for receiving the jittered signal and generating an output signal; a receiver for calculating the jitter propagation and tolerance; and a clock module for generating a clock signal. The advantages of this invention are that it overcomes the shortcomings of existing jitter injection schemes, such as poor versatility and inflexibility, and also improves the shortcomings of existing index measurement schemes, such as poor economy and lack of integration.

The invention discloses a level shifter, a chip and electronic equipment, and the level shifter comprises a pulse coding circuit which is used for coding rising edge information and falling edge information of a first control signal in a first voltage domain to obtain a first group of pulse signals, at least two pulse signals in the first group of pulse signals comprise rising edge information and falling edge information of the first control signal; the level shift circuit is used for shifting the first group of pulse signals from the first voltage domain to a second voltage domain to obtain a second group of pulse signals, one of the first voltage domain and the second voltage domain is a low voltage domain, and the other one is a high voltage domain; and the pulse decoding circuit is used for decoding the second group of pulse signals to obtain a second control signal in the second voltage domain. The level shifter has strong anti-interference capability.

A method of generating an encoding table for sensor signals of a vehicle includes (i) obtaining the frequency at which sensor signals occur, (ii) classifying the sensor signals into different levels according to the occurrence frequency, with the level number related to the number of encoding bits, wherein the higher the occurrence frequency, the smaller the level number and the smaller the number of encoding bits, (iii) assigning binary codes to the sensor signals, wherein the binary code has a single middle bit, front bits before the middle bit, and rear bits after the middle bit, the middle bit is written into a first bit value, the number of the front bits characterizes the level and is written into a second bit value, and the number of the rear bits depends on the number of the front bits and the value of the sensor signal is mapped out by the bit value of the rear bits, and (iv) generating an encoding table to establish corresponding relationships between the sensor signals and the binary codes. A corresponding encoding method, decoding method, computer program product, and processing device are also disclosed. This can reduce the memory required to record sensor signals.

The technology provides a digital multi-tone generator (DMTG), and a method of generating multitone signals, comprising a clocked single flux quantum circuit configured to generate a pulse train comprising a plurality of pulses with consecutive pulse peaks separated by a period corresponding to a period of the clock; and a clocked shift register coupled with the clocked single flux quantum circuit, the clocked shift register having an encoded bit pattern, and being configured to produce an output dependent on the encoded bit pattern and the period of the clock, such that the bit pattern modulates the pulse train with a plurality of frequency components. A DMTG may be fabricated using cryogenic superconducting ICs comprising Josephson junctions, configured to generate multiple microwave signals. The DMTG may be used for control of quantum computing systems and quantum sensors, including superconducting qubits and superconducting nanowire single-photon detectors (SNSPD).

The application discloses an operator six-dimensional data coding method, and belongs to the technical field of data coding. The operator six-dimensional data coding method comprises the following steps: setting the total number of coding bits of a label; dividing user information data blocks according to the number of coding bits, and setting information levels of different data blocks; acquiring the connection number of users, the terminal number, the number of application rights, the customer activity, the customer online time length and the customer package value information and converting them into the same coding system as the coding; sorting the known information according to the coding bit format and rounding up; padding the invalid information with 0; stacking the same data; comparing the user information data with the coding interval, judging and classifying the user information to the corresponding interval; and checking whether the user data information corresponds to the coding interval. The application acquires different data information of users, encodes the data information, improves the accuracy of user service, and facilitates targeted service for different customers.

The application relates to the technical field of digital information transmission, and discloses a Morse code encoding and decoding method and system based on artificial intelligence, which comprises the following steps: converting text information into an initial dot-dash symbol sequence according to a standard Morse code mapping table, and collecting channel characteristic parameters to input a light decision tree model to determine a time sequence characteristic weight vector; optimizing the initial dot-dash symbol sequence to generate an optimized dot-dash symbol sequence; calculating an absolute sending time length, combining a multipath fading coefficient of a channel to dynamically adjust sending power and waveform envelope parameters, and generating an encoding signal; demodulating a received signal to obtain a time sequence characteristic weight vector used by a sending end, performing envelope detection on a baseband signal, and obtaining a dot-dash symbol sequence according to the time sequence characteristic weight vector, and converting to obtain decoded text information according to a standard Morse code mapping table. The application solves the encoding and decoding problems of the Morse code in a dynamic environment, and can run on an edge device.

The invention discloses a self-adaptive down-sampling time sequence coding method and a self-adaptive down-sampling time sequence coding system. The method comprises the following steps: providing a step length prediction module based on a learnable network, dynamically generating a prediction window parameter based on the global feature of a multi-dimensional time sequence signal, generating a smooth window function according to the prediction window parameter, weighting the multi-dimensional time sequence signal and the smooth window function to obtain multiple groups of soft block signals, two-dimensional self-attention calculation is carried out on each group of signals, feature vectors are extracted, sequence representation is output through global self-attention calculation after recombination, the system correspondingly comprises corresponding function modules, the function modules comprise a step length learning device based on a learnable network, and regularization items are introduced to optimize training loss. The method gets rid of artificial experience dependence, realizes adaptive downsampling of the time sequence signal, avoids boundary information loss and an extreme downsampling strategy, improves coding efficiency, precision and universality, and can be widely applied to cross-field time sequence signal processing scenes of astronomical gravitational wave monitoring, medical treatment, industry and the like.

The invention discloses a synchronizing signal generating circuit and a synchronizing signal generating method. The synchronizing signal generating circuit comprises a first counting circuit, a trigger circuit and a pulse circuit, wherein the first counting circuit receives serial data and counts rising edges and / or falling edges of the serial data to generate counting signals. The trigger circuit receives the counting signal and generates a trigger signal according to the counting signal, when the counting signal is larger than or equal to a first threshold value, the trigger signal jumps from the first state to the second state, and the first threshold value is a natural number from 2 to 21. The pulse circuit is used for receiving the trigger signal and generating a synchronizing signal according to the trigger signal, and when the trigger signal jumps from the first state to the second state, the synchronizing signal jumps from the first state to the second state and jumps to the first state after being kept in the second state for a preset duration. The synchronous signal generation circuit can quickly and accurately generate the synchronous signal, and ensures the reliability of serial data transmission.

A CAN bit stream sampling device for a controller area network (CAN) controller, the device configured to receive a bit stream from a CAN transceiver, the device configured to: detect a rising edge in the bit stream; separately detect a falling edge in the bit stream; and generate a recovered non-return-to-zero coded bit stream based on at least the detected falling edge and the detected rising edge.

Encoding PAM4 or PAMS symbols to have a power spectral density (PSD) similar to the PSD of a standard 8b 10b Non-Return-to-Zero stream. In one embodiment, a transmitter includes first and second 8b 10b encoders that receive first and second streams split from an original byte stream. The first and second 8b 10b encoders output first and second 8b 10b streams, respectively. The first and second 8b 10b streams are fed into a 2 -bit combiner that performs a linear combination of the first and second 8b 10b streams. And a 4 -level Pulse Amplitude Modulation encoder (PAM4 encoder) converts the linear combination of each two bits, received from the combiner, into a PAM4 symbol. Wherein the resulting stream of PAM4 symbols has PSD similar to the PSD of the standard 8b 10b non-return-to-zero stream.

To provide efficient data transmission systems and methods that reduce signal loss.SOLUTION: In a system, an encoder 600 comprises: a transition encoder 502 configured to receive a first data signal 508 and generate a first stream 512 of first bits based on the first data signal; a bit generator 604 configured to receive a second data signal 510 and generate a second stream 614 of second bits based on the second data signal; and a PAM4 transmitter 506 configured to receive the first stream of first bits and the second stream of second bits, and generate PAM4 (pulse-amplitude_modulation_4-level) symbols based on at least the first stream of first bits.SELECTED DRAWING: Figure 6

A decoding circuit and display device are provided, belonging to the field of electronic technology. In each logic circuit group of the decoding circuit, each N-type transistor and each P-type transistor are arranged along a second direction, and the N-type and P-type transistors are arranged along a first direction intersecting the second direction. The substrate isolation region of each transistor is located on both sides of the transistor in the first direction, and a transition hole arranged along the second direction is formed on the substrate isolation region. In this way, the P-type transistor and the N-type transistor can be isolated by the substrate isolation region with the transition hole, making the spacing between adjacent P-type and N-type transistors greater than the spacing between two adjacent transistors of the same type (e.g., N-type or P-type transistors), ensuring that the N-type and P-type transistors maintain a sufficiently large spacing. Furthermore, mutual interference between different types of transistors can be avoided, resulting in better circuit stability and preventing latch-up effects.