36 results about "Syncword" patented technology

The invention discloses a multichannel LED digital control system and method. The system comprises a main controller which generates an LED control instruction and sends a data frame through a differential bus; the plurality of LED driving modules are connected with the main controller through a differential bus, and each LED driving module comprises a differential receiver for receiving a differential signal of the differential bus; the UART communication module is connected with the differential receiver and converts the differential signal into serial data; the data processing state machine module is connected with the UART communication module and is used for analyzing the received data frame, and the data frame comprises a synchronous byte, a device address / command composite byte, a register address byte, a data byte and a CRC (Cyclic Redundancy Check) check byte; the digital logic counter is used for measuring the bit width of each data bit in the synchronous bytes and calibrating the sampling time sequence of the UART communication module based on a measurement result; the register group is used for storing LED control parameters; and the multi-path PWM generator is connected with the register block and generates multi-path PWM signals according to the LED control parameters so as to drive the LEDs. The power consumption is reduced.

The present application relates to a PPDU transmission method and apparatus, and a readable storage medium, the method comprising: an AMP device sending an AMP PPDU, the AMP PPDU comprising a synchronization field, a signaling field, and a payload, the synchronization field being generated based on a synchronization sequence, the synchronization sequence being used to indicate or correspond to at least one data rate, the signaling field being generated based on the synchronization field, and the payload being generated based on the synchronization field; the first information in the signaling field is used to indicate a data rate of the payload in conjunction with the synchronization sequence. By adopting the method and the device, the bit number of the signaling field can be saved, and the detection reliability of the synchronization sequence can be improved. The method and the device can be applied to the AMP field, such as supporting WPT, WLAN or IEEE series protocols. The method is suitable for IEEE (Institute of Electrical and Electronic Engineers) 802.11 protocols related to AMP (Amplification Management Protocol) or other protocols suitable for IEEE 802.11 series, such as 802.11 a / b / g / n / ac / ax / bee / bn protocols and the like.

The invention provides a data synchronization method and device, computer equipment and a storage medium. The method comprises the following steps: when a data updating event in a first storage cluster is detected, acquiring library table information corresponding to the data updating event; performing synchronization rule searching in a preset synchronization rule base based on the base table information to obtain a target synchronization rule; extracting a synchronization field from the target synchronization rule, and extracting update content from a library table corresponding to the library table information based on the synchronization field; generating a synchronization event message based on the update content and the rule label of the target synchronization rule; and sending the synchronization event message to a message queue, so that the synchronization execution component calls a write data interface of at least one second storage cluster indicated by the target synchronization rule based on the synchronization event message after subscribing to the synchronization event message in the message queue, and synchronizes the update content to the second storage cluster. According to the method, the synchronization of the other part of data among the storage clusters can be realized on the basis of keeping the part of data in the storage clusters independent.

The application discloses a method and device for sensing, judging and processing data structure change. The method comprises the following steps: collecting a data structure change event based on a change data capture tool; constructing a data structure change abstract syntax tree through a SQL parser to accurately identify the change operation type and content; obtaining structure snapshots before and after the change; executing compatibility judgment in combination with a compatibility rule library to output the compatibility state and risk level; adopting a hierarchical message notification strategy according to the risk level; and automatically triggering or arranging corresponding processing actions, such as automatically synchronizing fields, generating a compatible view or suspending a high-risk task. The application realizes semantic-level analysis of data structure change, automatic compatibility judgment, refined risk grading and automatic processing, significantly reduces the cost of manual intervention, effectively avoids downstream synchronization interruption and data quality abnormalities caused by structure change, and improves the stability and automatic operation and maintenance level of a medium or large data platform.

Embodiments of the present application provide a data synchronization method and device, equipment and storage medium, relating to the technical field of computer, in particular to an implementation mode of directly synchronizing data of databases applied to different cloud vendors; in the present application, the central service component of the source database receives a synchronization request sent by the synchronization service component of the target database for a data synchronization task, the synchronization request carrying a synchronization field used for indicating a starting query position and a query data quantity used for determining a terminal query position; based on the synchronization field, the synchronization data matched with the query data quantity is obtained from the source data table; the synchronization data is encrypted by using a task public key, and the obtained encrypted data is returned to the synchronization service component. In the cross-cloud scenario, the data synchronization of the source database and the target database is implemented, so as to fully utilize the resources and advantages of different cloud databases and improve the service quality and response speed in the global range.

The application provides a decoding method for ARINC specification flight data, wherein the ARINC specification at least includes ARINC717 specification and ARINC767 specification, the decoding method includes reading original flight data file to form binary data stream, searching all synchronization words and obtaining position data of each synchronization word; obtaining position difference data of each synchronization word according to the position data, and comparing the position difference data with corresponding specification interval data, when the position difference data is consistent with the specification interval data, corresponding synchronization word is confirmed as a checked valid synchronization word; for each valid synchronization word, parameter information associated with the valid synchronization word is obtained, and the parameter information is matched with parameter acquisition information contained in a decoding parameter library, when the matching is successful, the parameter information is decoded in combination with attributes of each parameter in flight data contained in the decoding parameter library, so that parameter values of each parameter contained in the flight data are obtained.

Embodiments of the present application provide a vehicle cooperative positioning method and device in a vehicle fleet, a storage medium and an electronic device, wherein each vehicle in the vehicle fleet is configured with a preset synchronization word, and a data packet of each vehicle includes the preset synchronization word and a data frame for carrying positioning data, and the data frame in the data packet of each vehicle is a CRSF telemetry frame; the method comprises: extracting the synchronization word in a first data packet of a target vehicle; in response to the synchronization word in the first data packet matching the preset synchronization word, analyzing a first data frame in the first data packet to obtain a vehicle identifier of the target vehicle and positioning data of the target vehicle; in a case where the vehicle identifier of the target vehicle and the positioning data of the target vehicle are obtained, updating the positioning data of the target vehicle to a cooperative database locally of the vehicle based on the vehicle identifier of the target vehicle; and based on the cooperative database, rendering a position point of each identified vehicle on a regional map preloaded in the vehicle.

Techniques for synchronizing operation among multiple controllers. In an example, a method includes generating, at a first controller, a first synchronization word for a task, the first synchronization word including a first controller identification (ID) that identifies the first controller, and outputting, by the first controller, an output data signal including the first synchronization word. The method further includes receiving, at the first controller, an input data signal that includes a second synchronization word for the task, the second synchronization word including a second controller ID that identifies a second controller, updating, by the first controller and responsive to receiving the second synchronization word, an interrupt status record for the task, and generating, responsive to the interrupt status record reaching a threshold value, an interrupt signal instructing the first controller to perform the task, and outputting, by the first controller, the output data signal including the second synchronization word.

In one implementation, a method comprises: receiving, in a first radio, a radio frequency (RF) signal and processing the RF signal to provide a bit stream to a digital circuit of the first radio; enabling a first correlator of the first radio to detect at least a first portion of a sync word of a wake-up packet of the bit stream, and thereafter enabling a second correlator of the first radio to detect at least a second portion of the sync word; enabling an averager circuit to detect another portion of the sync word; and in response to detection of the sync word, disabling the first and second correlators and maintaining the averager circuit enabled.

The invention relates to the technical field of aviation data recording and processing, in particular to a QAR data expansion method and device based on non-hardware modification. The method comprises the following steps: modifying software of an upstream data acquisition component of the aircraft QAR system to realize modification of starting point trigger logic of data records from a first event to a second event earlier than the first event, and setting a synchronization word compatible with a downstream component; adjusting the working mode of the downstream component, closing the data segmentation function of the downstream component, and adapting to the data stream transmitted by the upstream component; and loading the modified software to an upstream data acquisition component, and configuring the adjusted working mode to a downstream component to realize the recording time range expansion of the QAR data. According to the method, the upgrading cost of single-rack aircraft data recording range expansion is greatly reduced, the upgrading time of a single-rack aircraft can be controlled within one hour, the method is successfully adaptive to multiple types of fleets, and complete recording of data in the whole engine starting process can be achieved.

The invention provides a data synchronization method, system and device supporting commercial secret algorithm conversion and a medium, and belongs to the field of information technology and data security, and the method comprises the following steps: obtaining a source data table list and a target data table list; obtaining an adapter resource pool; creating a data synchronization task, wherein the data synchronization task comprises a to-be-synchronized field marked with at least one of a decryption demand and an encryption demand; executing a data synchronization task and writing the encrypted data into a target data table; the execution of the data synchronization task specifically comprises the steps of reading target data from a source data table according to a to-be-synchronized field, and calling a specified decryption adapter to decrypt the target data corresponding to the to-be-synchronized field with a decryption requirement to obtain intermediate plaintext data, and calling a specified encryption adapter to encrypt the intermediate plaintext data or the target data which has the decryption requirement and skips the decryption operation to obtain encrypted data. According to the method, the security and availability of the sensitive data are improved.

The invention relates to an IPTV (Internet Protocol Television) video encapsulation verification method. The method comprises the following steps of: directly accessing and analyzing IPTV on-demand program transport stream TS (Transport Stream) data in an online storage system; analyzing a plurality of transmission packets in the TS data in sequence; based on a preset verification rule set, packaging normativity verification is carried out on the parsed field; wherein if a predefined type of packaging error is identified in the analysis process, the subsequent verification process of the current program source is immediately interrupted. The predefined type of packaging error comprises at least one of a synchronous byte error and a secondary error defined according to the ETSI TR101290 standard. According to the method, by introducing an online detection and error interruption mechanism, efficient and automatic verification of massive video files is realized, the packaging problem can be quickly positioned without completely traversing the files, the detection efficiency is effectively improved, the method can be integrated with an existing service system, the program state is automatically managed, and the risk of manual operation is reduced.

The present application relates to a PPDU transmission method and apparatus, and a readable storage medium. The method comprises: an AMP device sends an AMP PPDU, wherein the AMP PPDU comprises a synchronization field, a signaling field, and a payload, the synchronization field is generated on the basis of a synchronization sequence, the synchronization sequence is used for indicating or corresponds to at least one data rate, and first information in the signaling field is used, in conjunction with the synchronization sequence, for indicating the data rate of the payload. By means of the present application, the number of bits in a signaling field can be reduced, and the detection reliability of a synchronization sequence can be improved. The present application can be applied to the field of AMP, for example, supporting WPT, WLAN, IEEE series protocols, etc., for example, AMP-related protocols of IEEE 802.11, or other protocols applicable to the IEEE 802.11 series, such as 802.11a / b / g / n / ac / ax / be / bn protocols.

An integrated circuit with an interface circuit is described. During operation, the interface circuit may receive signals corresponding to a header of a frame that is compatible with a serial communication protocol, where the received signals include a temporal pattern of binary bits with instances of a dominant signal level and a recessive signal level. Then, the interface circuit may compute a set of conditions based at least in part on the receive signals, where, when valid, the set of conditions identify a first dominant bit in the binary bits having the dominant signal level. Moreover, when the set of conditions are valid, the interface circuit may: determine a location of synchronization field in the header relative to the identified first dominant bit; and calculate a baud rate of the receive signals based at least in part on a subset of the binary bits in the synchronization field.

This invention relates to the field of intelligent substation simulation modeling, and discloses a simulation modeling method for merging units in intelligent substations, comprising the following steps: parsing the engineering configuration file to establish a sampled value message protocol template, and establishing a disturbance coverage matrix based on the state edge to be identified; generating a homogeneous disturbance fingerprint based on the disturbance coverage matrix, collecting reference input data and sampled value message data, and generating a dual-domain observation tuple; and performing cross-domain causal separation, channel binding verification, and electrical sampling chain parameter inversion based on the dual-domain observation tuple. This invention establishes a linkage model between the sampled value field, synchronization field, quality bit field, sample count field, and message timing of the merging unit through the disturbance coverage matrix, dual-domain observation tuple, cross-domain causal separation, phase residual table, state consistency constraint graph, and frame-level joint constraint solution, thereby improving the simulation model's ability to support boundary condition output behavior.

The present disclosure relates to a frame synchronization method and device, electronic equipment and storage medium, and relates to the field of signal processing. The method comprises: in response to receiving a single frame serial data stream, converting the frame serial data stream into N parallel data streams, wherein a synchronization code group is included at a preset position of the frame serial data stream, N is a natural number, N≥2; obtaining a current frame synchronization state and a record number of historical Hamming distances; determining a target parallel data stream from the N parallel data streams; detecting the target parallel data stream for the synchronization code group according to the preset position, and determining a target Hamming distance; and updating the frame synchronization state according to the current frame synchronization state, the target Hamming distance, a preset distance threshold, the record number and a preset number threshold. The present disclosure can effectively reduce the rate of data input into the synchronization system and improve the robustness of the synchronization system.

The application relates to the technical field of anti-quantum computing, in particular to a mixed authentication handshake method fusing an anti-quantum algorithm and a national secret protocol, acquiring a national secret and an anti-quantum path key segment, extracting a number and a source to write a handshake structure, completing position comparison and chain numbering, adjusting segment positions in the structure and synchronizing fields, executing number checking and data block shifting, promoting content insertion and frame structure updating, and completing the mixed authentication handshake structure. The application marks key segment numbers, sources and stages, binds writing paths in combination with positions and promotion data, introduces chain numbering to control segment sequences in combination with source comparison, adjusts segment distribution in combination with position exchange and field synchronization, enhances structure scheduling capability, processes conflicts and overlaps in combination with number checking and data block shifting, promotes parallel insertion in combination with a handshake identifier written in a channel, and improves structure consistency and data bearing integrity.

The invention discloses a Bluetooth device, a Bluetooth device multi-link fast switching method and a Bluetooth device multi-link fast switching system. The method comprises the following steps: calculating a syncword time difference of two times before and after when a device serving as a Slave role in each link used for communicating with a source device receives a packet sent by the source device; and adjusting a microsecond clock in a local clock of the equipment serving as the Slave role in each link based on the syncword time difference, so that the offset of the microsecond clock of the equipment serving as the Slave role in each link is kept unchanged, and the local clock of the equipment serving as the Slave role in each link is kept synchronous with the clock of the source equipment. According to the invention, the clock system phase difference of each link can be kept synchronous, so that subtle clock skew does not need to be updated during switching, a part of switching time consumption proportion can be saved, and the purpose of rapid switching is achieved.

The present application relates to a data processing method and device for frame synchronization, a communication system, a communication device, a communication apparatus and a storage medium. The method includes: processing frame parameter information to generate a frame parameter field with a set pattern; packing the frame parameter field with payload data to obtain frame structure data; and sending the frame structure data, wherein the set pattern is used by a receiving end to position the frame parameter field in a received data stream, and subsequently to obtain the frame structure data from the data stream based on the frame parameter field. The above method enables the receiving end to determine the start position of the data frame sent from the sending end without using the synchronization word in the communication system, which improves the efficiency of data transmission in the communication system.

The application provides a kind of adaptive deserializing method of SONY image sensor output data based on FPGA, for the serial data stream of synchronous image sensor, restores the RAW data of sensor acquisition.The adaptive deserializing method of data specifically includes the following steps: clock synchronization logic, serial-parallel conversion logic, synchronous alignment logic, decoding output logic.Clock synchronization logic is used to align the phase of source synchronous clock and data, so that clock sampling point is located in the center of data, to avoid collecting metastable signal;Serial-parallel conversion logic parallelizes one-bit input data into 8 bits, and the source synchronous clock is reduced to 1 / 4;Synchronous alignment logic finds the synchronization code in the data in real time, and if the match is successful, the corresponding parallel data is output to the decoding output logic;Decoding output logic obtains the corresponding field synchronization signal, line synchronization signal and valid data by comparing parallel data with the image line field valid synchronization word provided by SONY.

A protocol reverse engineering method, computer-readable storage medium, and program product, relating to the field of information warfare, includes: employing a variable sliding window coarse search to determine the minimum width of the sliding window containing the entire frame length; determining a fixed sliding window width based on the minimum sliding window width, and employing a fixed sliding window fine search to determine the frame header and frame trailer; segmenting the data stream based on the frame header and frame trailer; confirming whether the frame type is fixed-length or variable-length based on the results of the fixed sliding window fine search; statistically analyzing the segmented frame data to determine the synchronization word length; forming a frame structure-keyword template based on prior knowledge; the frame structure analysis results include the frame header, frame trailer, synchronization word length, and frame type; matching the frame structure analysis results with the frame structure-keyword template to obtain the parsed value, inferred value, or new sample of the actual keyword. Based on physical layer and link layer demodulation, parameter identification of the communication protocol is performed on the data stream under conditions of no or little prior information.

This invention discloses a robust dynamic networking method for power line carrier communication that incorporates deep learning. Sites extract channel features using lightweight convolutional neural networks, while the central coordinator employs an attention-enhanced long short-term memory network to predict channel states. Optimal routes and dual-mode switching strategies are dynamically generated based on deep reinforcement learning. The central coordinator performs millisecond-level topology reconstruction, achieving network-wide synchronization through special synchronization beacon frames. The system automatically and incrementally updates model parameters daily, continuously optimizing network performance. Experimental results show that this method significantly improves the robustness of power line communication networks in complex noise environments, drastically reduces burst noise packet loss rate, and significantly shortens topology response time, providing highly reliable communication assurance for smart grids.

The invention provides an equipment detection method, electronic equipment and a storage medium. The method comprises the following steps: receiving a first communication message sent by a second Bluetooth device; performing synchronization word detection on the first communication message; when the synchronization word is detected in the first communication message, determining a first Bluetooth address based on the synchronization word; the device information of the third Bluetooth device is stored in a preset storage area, the third Bluetooth device is the Bluetooth device corresponding to the first Bluetooth address, and the preset storage area is used for storing the device information of the Bluetooth device detected by the first Bluetooth device. According to the embodiment of the invention, other Bluetooth devices near the Bluetooth device can be accurately detected.

A wireless network includes a wireless transmitter to multiply data bits with a spreading code to generate spread data, prepend a synchronization word, and transmit a pair of null frames via an anchor wireless device to jam a ping reflector device for each chip of a one value being transmitted. A receiver transmits, via the anchor wireless device, a ping packets to the ping reflector device at a particular ping rate and receives ping acknowledgement packets from the ping reflector device in response to the transmitted ping packets. Each pair of null frames causes a spike in the ping acknowledgment packets that are received, indicating receipt of a chip of the one value. In response to correlating the synchronization word within ones of the ping acknowledgment packets, the receiver begins use of the spreading code to decode the spread data encoded within subsequently received ones of the ping acknowledgement packets.

Methods and apparatus are provided for communicating with an ambient power (AMP) tag device by an AMP-compliant WiFi device. A method includes generating a physical layer protocol data unit (PPDU) that includes a preamble that is compliant with an Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard. The PPDU further includes an AMP preamble including a synchronization (SYNC) field and an AMP data frame carrying downlink (DL) data. In this method, the SYNC field of the AMP preamble includes an On-Off keying (OOK) modulated SYNC sequence, the SYNC sequence including an indication of a first data rate or a second data rate for the DL data, or an indication of a first operating frequency band or a second operating frequency band. The method further includes transmitting, by the WiFi device, the PPDU for reception by the AMP tag device.

Methods and apparatus are provided for communications between an ambient power (AMP) tag device by an AMP-compliant WiFi device. A method includes generating, by an AMP tag device, an UL backscatter physical layer protocol data unit (PPDU) segment. The UL backscatter PPDU includes an UL AMP preamble having an UL AMP synchronization (SYNC) field that includes an On-Off keying (OOK) modulated SYNC sequence. The SYNC sequence may be a repetitive OOK modulated waveform that is Manchester encoded. The UL backscatter PPDU of this method further includes an UL data frame. The method further includes transmitting, by the AMP tag device, the UL backscatter PPDU for reception by an AMP-compliant WiFi device.

This invention discloses a frame synchronization method and apparatus based on synchronization word signal-to-noise ratio (SNR) estimation, relating to the field of digital communication technology. The method includes the following steps: S1, the receiver performs sliding cross-correlation calculation on the received signal and the local synchronization word waveform sequence to obtain a correlation value sequence; S2, in the correlation value sequence, it searches for peak values ​​exceeding the correlation peak threshold and their positions as preliminary synchronization positions; S3, based on the preliminary synchronization positions, it estimates the SNR of the synchronization word field; S4, it compares the estimated SNR with the SNR threshold. If the SNR is greater than or equal to the SNR threshold, it is determined to be true synchronization; otherwise, it is determined to be false synchronization and the search is repeated. This invention effectively distinguishes between true and false synchronization by introducing posterior SNR estimation as a joint decision condition.

The application provides a satellite broadcast channel physical frame construction method, device, equipment and medium, which can effectively improve the transmission performance of a satellite broadcast system. The method comprises the following steps: processing service data into a plurality of data slots with a preset length; modulating synchronization word information to generate a synchronization word; encoding signaling word information, scrambling and modulating the encoded signaling word information to obtain a signaling word; and sequentially multiplexing the synchronization word, the signaling word and a preset number of data slots to form a physical frame. The method is mainly used in the technical field of communication and provides technical support for improving the transmission performance of a satellite broadcast system.

The application discloses a processing method and device of insurance exclusion clauses and electronic equipment. The method comprises the following steps: pre-processing an insurance contract text to obtain a candidate text segment including an exclusion clause; identifying the exclusion clause in the candidate text segment, and generating a preliminary merged text according to the exclusion clause; performing compliance verification and readability optimization on the preliminary merged text, and generating a spoken explanation script and a synchronous subtitle text; and pushing the spoken explanation script and the synchronous subtitle text to a double-recording device to realize real-time synchronization of the spoken explanation script, the synchronous subtitle text and the double-recording function. The application can avoid problems such as missing key exclusion elements and inaccurate expression, is convenient for policyholders to understand, reduces compliance risks, does not depend on the professional ability of sales personnel, and improves the standardization degree.