43 results about "Broadcast time" patented technology

The invention relates to the technical field of wireless communication synchronization and gate valve action collaboration, in particular to a multichannel audio master-slave sound role intelligent conversion system and method.A master control unit broadcasts a time calibration packet to synchronize unit clocks, and an automatic calibration protocol is executed to generate an inherent processing delay baseline value; the subordinate gate valve unit records an instruction receiving and action completion timestamp through a delay detection module, calculates actual delay containing wireless transmission and local processing delay, and packages the actual delay into a structured feedback data packet for real-time feedback; a dynamic adjustment module of the main control unit filters noise through a weighted moving average algorithm, and calculates individual compensation delay parameters in combination with the dynamic buffer compensation amount of the environment interference monitoring module and delay trend prediction of an adaptive learning engine; and when abnormity occurs, historical data is called for replacement and self-inspection is triggered, an instruction distribution time sequence is adjusted according to compensation parameters, a gate valve action execution confirmation module verifies the displacement precision, and the fluid control precision and stability are improved.

The invention discloses a 2.4 G-based RSSI (Received Signal Strength Indicator) positioning data relay transmission device and method, and belongs to the technical field of wireless communication. The device comprises a positioning label, a positioning gateway, a relay gateway and a public network gateway. The positioning tag broadcasts a 2.4 G signal containing the ID of the positioning tag; the positioning gateway scans the 2.4 G signal, and generates and broadcasts a data packet in which a positioning gateway address, a data packet number, a relay level and aggregated data are packaged; a relay gateway is switched to a low-power-consumption mode after initialization through a monitoring-learning-synchronization mechanism, wakes up and receives data in a broadcast time window of an upstream gateway of the relay gateway, updates a relay level and forwards the data to a downstream gateway, and therefore multi-hop relay transmission of the data is achieved. And the public network gateway finally uploads the data to a cloud platform or an upper computer. According to the invention, through data aggregation and time synchronization dormancy, the system power consumption is greatly reduced, and long-distance and long-endurance positioning data transmission of battery power supply in a complex environment is realized.

The application discloses an implementation method suitable for a high-throughput satellite communication hybrid duplex system, which acquires double-network statistical basic data containing end station round-trip propagation delay distribution and phased array antenna transmission-reception switching characteristics; constructs a dual-coupling time planning mathematical model with original network and mirror network time window start and end time as optimization variables, and solves optimal time parameters under the conditions of satisfying physical constraints such as delay reachability, antenna switching safety and main station reception zero overlap; and the main station broadcasts time slot configuration instructions to cooperatively control all network end stations to perform hybrid duplex transmission-reception. The application also introduces a closed-loop feedback mechanism based on end station local observation, estimates delay drift by using network clock reference information, and corrects model input. The application realizes zero conflict hybrid duplex communication under complex physical constraints by converting static configuration into dynamic mathematical optimization solution, and improves satellite spectrum resource utilization rate and system operation stability.

The application discloses a channel distribution scheduling management method and system for IPTV live broadcast service, relates to the technical field of IT and software development, and aims to solve the problem that IPTV live broadcast service application mainly includes different application scenarios such as live broadcast unicast, live broadcast time shift, live broadcast review, and the number of access channels based on different province live broadcast sources is more than 300 channels, and the number of channels is relatively large, so that higher requirements are needed for storage system capacity, read-write IO ability and program saving redundancy security strategy, technical solution points are as follows: S1: intelligent channel distribution management, live broadcast cache flow service nodes realize multi-node channel access distribution management based on an intelligent channel distribution management mechanism, S2: accurate scheduling of terminal service request, accurate scheduling redirection mechanism is combined with different node associated different channel list configuration, and it is guaranteed that terminal request supports hotspot channel service service direct response to any live broadcast cache flow service node. The effect of reducing end-to-end network data transmission and reducing transmission delay is achieved.

The application discloses a Wi-Fi network access method and device, communication equipment and a readable storage medium, and belongs to the technical field of communication. The method can comprise: a target Wi-Fi access point sending M Wi-Fi information under the condition of meeting a target condition, each Wi-Fi information being used for indicating one Wi-Fi type supported by the target Wi-Fi access point, and M being an integer greater than or equal to 2; wherein under the condition that M Wi-Fi types indicated by the M Wi-Fi information include a Wi-Fi type supported by a first electronic device, the first electronic device is connected with the target Wi-Fi access point, and the first electronic device is an electronic device receiving the M Wi-Fi information; the target condition meeting any one of the following: reaching a target broadcast time of the target Wi-Fi access point, and the target Wi-Fi access point receiving a target Wi-Fi detection request from the first electronic device.

This application provides a surface logging system, a network clock synchronization method, and electronic equipment, belonging to the field of petroleum logging technology. The method includes: periodically broadcasting time synchronization protocol data packets based on a clock server; synchronizing the current operating time of the depth tension display panel and the current operating time in the logging data uploaded by the first type of logging instrument to the logging network as the system reference time, based on the depth tension display panel and the first type of logging instrument; periodically broadcasting time synchronization protocol data packets to the logging network using a time synchronization protocol; receiving the time synchronization protocol data packets based on a second type of logging instrument and synchronizing the current operating time in the logging data uploaded by the second type of logging instrument to the logging network as the system reference time; or synchronizing the current operating time of the second type of logging instrument with the operating time of the depth tension display panel based on the depth tension display panel. This application's solution can realize logging operations in all logging scenarios.

The application discloses a 5G video stream edge intelligent regulation and control system with adaptive code rate, relates to the technical field of edge video regulation and control technology, and comprises a global snapshot modeling module, a hierarchical cache arrangement module, a version closed-loop correction module and an experience constraint distribution module. The snapshot module collects link observation, edge resource margin, terminal session state and interactive event count, calculates a rate matrix and a time delay matrix, decomposes a propagation item and a transcoding item of end-to-end live broadcast time delay, and encapsulates a state snapshot. The cache arrangement module analyzes hierarchical requests, divides shared layers and non-shared layers, generates a cache plan, a scheduling plan and a code rate version table under the constraints of capacity, availability and inter-layer dependency, and executes hierarchical fallback synchronous correction of code rate when resources are insufficient. The closed-loop correction module completes unique distribution of terminals to edge servers and corrects code rate under the constraints of bandwidth and computing power. The experience constraint distribution module executes hard check, conflict positioning, minimum disturbance incremental replacement and versioned rollback output.

The invention discloses an emergency broadcast system scheduling control scheme generation method, which relates to the technical field of emergency broadcast intelligent scheduling, and comprises the following steps: collecting a multi-source emergency event information data stream, and generating a unified event description record containing a global unique identifier, a quantitative influence level and an accurate geographical range through space-time correlation analysis and data fusion. The resource demand is calculated based on the record, and a scheduling conflict detection and optimization algorithm is utilized to generate a plurality of alternative schemes consisting of a terminal activation sequence, channel allocation mapping and broadcast time window arrangement in combination with a real-time resource state. And screening out an optimal scheduling scheme through the evaluation model and converting the optimal scheduling scheme into an executable instruction sequence. According to the method, the accurate integration of the emergency event information from heterogeneous to unified is realized, and the conflict problem in resource scheduling is solved through multi-scheme optimization decision, so that the automation level and the resource allocation efficiency of the emergency broadcast system in response to complex events are improved.

The invention provides a low-power-consumption working method and system based on a wireless HART (Highway Addressable Remote Transducer) wireless temperature transmitter. The low-power-consumption working method comprises the steps that S1, a main communication unit is responsible for protocol stack and data processing, a coprocessor manages RTC (Real Time Clock) awakening and power gating, and zero static power consumption in a non-communication time period is realized through partitioned power supply; s2, the coprocessor obtains a TDMA scheduling table from the main unit; s3, comparing the threshold value of the local temperature data delta T, and triggering reporting only when the threshold value exceeds the limit; rSSI / SNR is dynamically evaluated, a non-key broadcast time slot is intelligently skipped, and deep dormancy in a stable period is realized; and S4, the equipment reports an energy state through a Join Request and a health report, the network manager allocates relay tasks by adopting an energy weighting algorithm, and if the electric quantity of the battery node is lower than a threshold value, a terminal mode can be entered. And S5, the LSTM predicts the node electric quantity and the network load, reinforcement learning dynamically adjusts the TDMA scheduling and routing strategy, and active prediction maintenance and whole network energy balance are realized.

The invention provides a tag inventory method and device and electronic equipment, and relates to the technical field of wireless, and the method comprises the steps that a reader-writer sends a first message; under the condition that the N response messages received by the reader-writer collide, the reader-writer sends a second message to the N tags; under the condition that the label number of the returned response message is one, the reader-writer backtracks an interference response message which is closest to the first response message of the target label and contains a second response message of the target label, and performs interference elimination on the interference response message according to the first response message to obtain a residual response message; and the reader-writer performs inventory on the first tag and the tag corresponding to the residual response message. According to the method and the device, the response result of the multiple tags is backtracked, and interference elimination is performed on the response result of the multiple tags according to the response result of the single tag, so that the residual response message is decoded, the broadcasting frequency of a reader-writer is reduced, and the inventory efficiency of the tags can be improved.

A method for managing the access, by a reader device, to a multimedia content. The method includes, for the same content: acquiring a set of multicast broadcast channels associated with respective broadcast times spaced out over time, requesting rendering of data representative of multicast channels obtained during the acquiring, and receiving a selection of one multicast broadcast channel from amongst the broadcast channels included in the rendering request.

The embodiment of the invention provides a live broadcast slice change sensing method and device, a storage medium and electronic device.The method comprises the steps that a frequency group corresponding to metadata of a live broadcast slice is determined through quantization processing, and the frequency group is used for uniquely identifying the live broadcast slice; constructing a state field based on the frequency group, the amplitude of the live broadcast signal corresponding to the metadata, the source type of the metadata and the receiving timestamp of the metadata, and determining the health degree corresponding to the state field; comparing the health degree with a preset health degree threshold value, and adjusting a propagation strategy of the live broadcast slice based on a comparison result; and performing perception synchronization on the slice change corresponding to the live broadcast slice based on the propagation strategy. By adopting the technical scheme, the problems of low slice change synchronization efficiency and low accuracy due to the fact that a new slice cannot be continuously requested in a live broadcast time shifting process in a weak network and sparse node environment can be effectively solved.

The invention discloses a mobile energy storage cluster collaborative scheduling method, device and equipment based on event trigger model predictive control, and a medium. The method comprises the following steps: constructing a discrete time state space model of a mobile energy storage unit; determining an error between the actual state of the mobile energy storage unit at the current moment and the predicted state of the mobile energy storage unit at the last broadcast moment, and when the error exceeds a dynamic threshold value, broadcasting the latest state information of the mobile energy storage unit to a neighbor unit; solving a rolling optimization problem in a to-be-predicted time domain by taking the SoC balance degree, the voltage deviation and the control increment as optimization targets to obtain an optimal control sequence of the mobile energy storage unit; and acting the first control component in the optimal control sequence on the bidirectional DC-DC converter of the mobile energy storage unit. The invention belongs to the technical field of mobile micro-grid and emergency power supply control. According to the invention, the problems of voltage drop and SoC balance caused by load abrupt change under the limited communication bandwidth can be solved.

The application discloses a kind of time correction method and system for ensuring the validity of electric energy meter period electric quantity, comprising: judging whether electric energy meter needs to be corrected, obtains the determination result;When the determination result indicates that electric energy meter needs to be corrected, determine the time correction strategy;Based on the time correction strategy selected and the preset time interval for obtaining electric energy meter period electric quantity, electric energy meter is time corrected.Therein, the time correction strategy includes: point-to-point time correction strategy and broadcast time correction strategy.The method of the present application can realize the clock correction of gateway electric energy meter while ensuring that period electric quantity is not lost, ensure the effectiveness and uniqueness of electric energy meter period electric quantity while carrying out electric energy meter clock time, ensure the legality of electric energy metering, ensure the fairness and justice of electric power trade;The method of the present application can be applied to electric energy meter acquisition master station at all levels, and the minute-level time correction of various gateway and user electric energy meters is realized through the master station;It can also be applied to electric energy meter field inspection equipment, and the time correction of electric energy meter is realized through field detection.

The invention relates to an underground time synchronization system for a coal mine. The underground time synchronization system comprises a master clock, the master clock receives satellite time service calibration and is used for providing an underground clock reference source, the master clock is a chip-level atomic clock, and the master clock is switched to a local time keeping mode under the abnormal condition of satellite time service; the slave clock is arranged at a time client of the underground terminal equipment of the coal mine, and the master clock continuously gives time to the slave clock through the underground industrial Ethernet by adopting IEEE 802.1 AS protocol communication of the TSN, and the slave clock is arranged at a time client of the underground terminal equipment of the coal mine. The master clock is connected to a TSN switch in the industrial Ethernet and broadcasts time information to the slave clock in a gPTP message form. According to the underground time synchronization system, satellite time service calibration and a chip-level atomic clock are adopted, and the system is switched to a local time keeping mode when satellite time service is abnormal, so that high-precision time synchronization between equipment is still kept under the extreme conditions of underground power failure and the like.

The invention discloses a high-precision time synchronization method for a space debris detection camera, and solves the technical problem that the time synchronization error of an existing space debris detection camera is large. The method comprises the following steps: S0, establishing communication; s1, electrifying the detection camera; initializing a time synchronization module; s2, acquiring on-satellite broadcast time data, on-satellite broadcast time enable signals and exposure time signals; the on-satellite broadcast time data comprises on-satellite broadcast second time and on-satellite broadcast microsecond time; s3, a second pulse signal is obtained, and a second pulse counter starts timing; s4, the microsecond counter carries out timing and assigns a value to a microsecond value register in real time; if the second pulse signal is received or timing is full, timing is carried out again; s5, selecting a second bit updating strategy to update the second value register; s6, according to the time of the exposure time signal, writing the values of the second value register and the microsecond value register into an FIFO cache, and outputting a high-precision synchronization time code; and S7, outputting state data and counting data of the second pulse signal.

This application relates to the field of interactive content playback, and in particular to a method and system for intelligent video content orchestration based on a multi-level rule engine. The method includes: acquiring a global broadcast time anchor point of a live channel and a multi-branch path dataset of interactive videos; based on this, performing real-time viewer progress tracking and estimated completion time analysis for each branch path to generate a viewer progress and time prediction information set; based on the viewer progress and time prediction information set, performing dynamic adjustment strategy analysis for flexible paths oriented towards the global time anchor point to generate a dynamic adjustment instruction set for controlling video content distribution; and based on the dynamic adjustment instruction set, performing personalized real-time video stream splicing and channel-level synchronous switching control to generate and output a channel broadcast stream synchronized with the global broadcast time anchor point. In the process of intelligent video content orchestration, this application reduces viewer experience interruptions or dissatisfaction through intelligent and flexible progress control, thereby improving viewing satisfaction.

The application provides a time slot allocation method and device for wireless self-organizing network, and the technical scheme comprises the following steps: setting fixed broadcast time slots and control time slots for each node in a wireless superframe; each node sends its broadcast information in its broadcast time slot and sends its network time slot information package in its control time slot; each node modifies its network time slot information package according to the network time slot information package of the one-hop neighboring node received by the node; and each node adjusts the occupied dynamic time slots according to its network time slot information package and the data amount to be transmitted, and modifies its network time slot information package according to the adjustment result. The technical scheme of the embodiment of the application has the advantages that each node only occupies dynamic time slots during data transmission, and meanwhile, one node can multiplex the same dynamic time slots with nodes other than its neighboring nodes, so that the use efficiency of the dynamic time slots and the network transmission bandwidth are improved, and the application is not sensitive to the number of nodes and has a wide application range.

In separate ranging sessions, the responding user equipment (UE) can determine whether there is a collision between ranging signals assigned to be broadcast in these separate ranging sessions. A collision in the ranging signals is detected when the ranging signals have the same frequency and broadcast time (e.g., the broadcast time of one ranging signal is within a predetermined amount of time for another ranging signal). When a collision in the ranging signals is detected, the responding UE sends a message indicating the likelihood of a collision to the initiating UE. The available time for broadcasting the ranging signal can be determined, for example, by either the responding UE or the initiating UE. The initiating UE can initiate a new ranging session based on the available time for broadcasting the ranging signal, or it can continue the ranging session if there is a possibility that the responding UE will not participate.

The invention relates to the technical field of communication, in particular to a narrowband communication time synchronization method and system. The method is applied to a narrowband communication system comprising a time synchronization initiating end and at least one time synchronization receiving end, and comprises the following steps: the time synchronization initiating end measures and stores independent unidirectional transmission delay for each time synchronization receiving end by performing bidirectional message interaction with the at least one time synchronization receiving end; the time synchronization initiating end periodically broadcasts and sends a time synchronization broadcast frame, the time synchronization broadcast frame comprises compensation time information for the at least one time synchronization receiving end, and the compensation time information is generated based on the local time of the time synchronization initiating end and the corresponding independent one-way transmission delay; and the at least one time synchronization receiving end receives the time synchronization broadcast frame, extracts respective compensation time information, and adjusts the local time according to the compensation time information. The method can realize accurate time synchronization, and has the characteristics of high precision and strong applicability.

The embodiment of the invention discloses a dynamic sliding window data frame association coding method and device, a dynamic sliding window data frame recovery method and device and electronic equipment, and the data frame recovery method comprises the following steps: reading corresponding data frames and association frames from L sub-cache regions in a receiving cache under the condition that a lost data frame exists currently, carrying out recovery operation on the lost data frame; wherein a data frame corresponding to the broadcast time slot and a corresponding association frame are stored in each sub-cache region, the association frame is obtained by performing association coding on at least two of K data frames including the data frame before the data frame by the wireless broadcast sending end, and K is a coding association length.

The application provides a method for realizing real-time alarm pop-up box and voice broadcast based on MQTT push protocol, comprising the following steps: S1, creating MQTT connection, in the system dictionary, configuring the display position, display mode and closing mode of the pop-up box on the screen, configuring the enable / disable function, broadcast times and broadcast interval of the Web voice broadcast, and configuring the subscription type of the alarm subscription, wherein the subscription type of the alarm subscription comprises device type subscription and alarm level subscription; S2, when subscribing to the alarm topic, the triggering conditions of the alarm pop-up box and the Web voice broadcast are managed by defining two arrays; S3, when the MQTT message is acquired, whether the device type or the risk level in the message is in the two arrays is judged, if yes, the pop-up box is prompted and the voice is broadcast according to the pop-up box configuration. The application timely informs the staff to process through the real-time alarm pop-up box and voice broadcast, and improves the production efficiency and safety.

This application provides a comprehensive management method and system for smart broadcasting and television stations, relating to the field of smart broadcasting and television technology. The technical solution provided in this application determines the type of broadcast time slot and the abnormal characteristics of content by obtaining the broadcast schedule, and calculates the risk transmission coefficient by combining it with historical risk evolution data for each time slot, generating a dynamic comprehensive risk score. This allows the risk assessment criteria to automatically adjust according to the importance of the broadcast time slot and the historical risk status, solving the problem that fixed threshold management methods cannot adapt to time slot differences. Simultaneously, it determines a set of associated stations based on the hierarchical position of the broadcasting and television station. When the target risk level reaches the linkage trigger condition, the initial management plan is adjusted based on hierarchical characteristics to obtain the target management plan. This enables multiple stations to coordinate and handle issues according to hierarchical responsibilities, avoiding insufficient response during important time slots and resource waste during unimportant time slots, thereby improving the operation and maintenance management effect of broadcasting and television stations.

This invention discloses a method for on-site calibration of low-voltage smart switches, comprising the following steps: initiating meter search, initiating broadcast time synchronization, acquiring downstream devices through topology identification, synchronously freezing the low-voltage smart switch to be calibrated and each downstream device, transcribing the voltage, current, active power, and reactive power of the previously frozen data, performing voltage gain, current gain, and phase angle difference calibration for each phase, and performing power calibration for each phase after waiting for a freeze interval. Compared with existing technologies, the method disclosed in this invention can expand the applicability of on-site meter calibration and improve the accuracy of on-site meter calibration.

Methods, apparatus, systems, and articles of manufacture are disclosed to identify media for ahead of time watermark encoding. An example apparatus includes a media interface to determine a characteristic of media, the characteristic corresponding to a broadcast time of the media; and a controller to: determine an identifier corresponding to the media; transmit a query including the characteristic and the identifier prior to the media being broadcast, the query to request an indication whether the identifier is unique; and responsive to the indication that the identifier is unique, cause a watermark to be encoded in the media using the identifier prior to the media being broadcast.

Disclosed embodiments include a playback device configured to: (i) obtain audio from an audio source via a Wireless Local Area Network (WLAN); (ii) generate broadcast times for individual portions of the audio content; and (iii) broadcast portions of the audio content to a Personal Area Network (PAN). Embodiments also include a wearable device configured to play audio received via a first PAN from a first playback device; (ii) while playing the audio received via the first PAN from the first playback device, determine whether the wearable device should switch to receiving the audio via a second PAN from a second playback device; and (iii) after determining that the wearable device should switch to receiving the audio via the second PAN, switch to receiving the audio via the second PAN and play the audio received via the second PAN.

The application provides an encryption transmission method and system of Loran signal, and belongs to the technical field of signal transmission encryption. The method comprises the following steps: obtaining a reference transmission time; generating a first pseudo-random time offset in a preset range through a first key derivation function and a first pseudo-random number generator based on a preset sensitive parameter and an embedded symmetric key; wherein the sensitive parameter comprises a broadcast time timestamp, and the symmetric key is pre-injected into a transmitting end and a target receiving end through an offline mode; superimposing the first pseudo-random time offset on the reference transmission time to generate an encrypted transmission time, and controlling a transmitter to send a Loran signal to the target receiving end at the encrypted transmission time; controlling the target receiving end to generate a second pseudo-random time offset based on the embedded symmetric key and a local clock, and correcting an observed signal transmission time reference value based on the second pseudo-random time offset to complete positioning calculation and obtain a positioning result.

The invention relates to the technical field of data analysis, in particular to an intelligent news broadcasting system and method.The method can comprise the steps that a generated news broadcasting text is obtained, and core keywords corresponding to the news broadcasting text are obtained; based on the vocabulary sensitivity degree mean value of the core key vocabularies and the manual generation participation degree of the news broadcast text, calculating to obtain a quantitative deletable degree index of the news broadcast text; based on the quantitative deletable degree index and the broadcast timeliness index of the news broadcast text, calculating to obtain a quantitative deferrable degree index of the news broadcast text; the visualization presents a quantized deletable degree indicator and / or a quantized delayable degree indicator. According to the technical scheme provided by the invention, the news events with higher priority and more core broadcast text content can be broadcasted emphatically by utilizing limited news broadcast time in an emergency, the broadcast sequence of the news broadcast text to be broadcasted / the final broadcast text content can be modified flexibly, and the method has a promotable value.

The invention discloses a distributed inertial measurement system and a time synchronization method thereof. The system comprises a main processor and a plurality of intelligent measurement nodes, wherein each node is integrated with a microcontroller, an inertial measurement unit, a bus transceiver module and a wireless communication module. The microcontroller responds to inertia data ready interruption, adds timestamps for data through a built-in high-resolution timer, executes preprocessing, and sends the data with the timestamps through a bus or a wireless channel. And the main processor periodically broadcasts a time synchronization frame, the nodes calibrate a local timer according to the synchronization frame and compensate clock drift, and time alignment of multi-node data is realized. According to the method, a software timestamp mechanism is adopted, a hardware trigger line is not needed, node hot plug and dual-mode redundancy communication are supported, the synchronization precision reaches the sub-100 microsecond level, and the method is suitable for distributed attitude measurement of various intelligent agents.