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84 results about "Broadcasting technology" patented technology

Broadcasting Technology 1 students learn all of the positions and equipment on a studio show including director, producer, news, technical and management, Students also use portable video equipment for location shoots.

Intelligent news broadcasting method and system based on artificial intelligence

The invention discloses an intelligent news broadcasting method and system based on artificial intelligence, and the method comprises the following steps: S1, obtaining data through a news crawling tool, and generating structured event data; s2, generating an event knowledge graph by using an improved BERT model, and performing clustering analysis by using an improved K-Medoids clustering algorithm; s3, generating a dynamic broadcast script through the multi-modal generative adversarial network; s4, analyzing the emotional state of the user, and generating personalized voice broadcast content; s5, generating an enhanced news abstract in combination with an event-driven mechanism and a time sensitivity optimization rule; s6, distributing dynamic weights by using a hierarchical attention mechanism, and dynamically adjusting a news broadcasting sequence in combination with a time sensitivity optimization rule; s7, performing logic consistency detection on the news broadcast content; and S8, adjusting the broadcast content and generating updated news broadcast content in real time. According to the method, personalized news broadcasting is realized by combining an improved algorithm, sentiment analysis, a dynamic broadcasting technology and the like.
Owner:金华市新闻传媒中心

Unlimited multi-terminal connection Bluetooth audio system based on broadcast

PendingCN119521073AReceive in real timestable receptionFrequency/directions obtaining arrangementsComputer hardwareSound quality
The invention introduces an unlimited multi-terminal connection Bluetooth audio system based on a broadcast technology, and aims to break through the limitation of a traditional Bluetooth audio system on the equipment connection number and tone quality transmission. By utilizing the technology, the system supports seamless connection with an infinite number of playing terminals, the application range is greatly expanded, and the connection flexibility is improved. The LC3 audio decoding technology integrated in the system significantly improves the quality and efficiency of audio transmission, and ensures excellent auditory experience. Besides, the equipped digital power amplifier and the Bluetooth main control chip allow a user to flexibly process and optimize audio output of each channel through an advanced frequency division control technology, and support independent or combined sound channel output setting. The design of the system not only adapts to household and commercial environments, but also can be widely applied to scenes such as public speech and multi-room music playing, the functionality and operation convenience of the audio system are greatly improved, and the new possibility of the Bluetooth audio technology in multiple scenes is developed.
Owner:SHENZHEN FANHUI TECHNOLOGY CO LTD

Main-standby switching method and equipment based on EPG (Electronic Program Guide) service, and computer storage medium

The invention discloses a main-standby switching method and device based on an EPG service and a computer storage medium, and relates to the technical field of television broadcasting, and the method comprises the steps: obtaining the current session data of a front-end interface after a fault signal of a main service is received; converting the session data into feature data and inputting the feature data into a prediction model to obtain a prediction result of the feature data; according to the prediction result, obtaining expected target behavior data corresponding to the prediction result; and constructing a switching instruction comprising the expected target behavior data, and sending the switching instruction to a front-end interface, so that the front-end interface preloads the expected target behavior data, and establishes connection with a standby service. According to the method and the device, the behavior of the current session of the user is predicted, and the prediction content is preloaded when the main service and the standby service are switched, so that the waiting time and the experience gap of the user in the service switching process are avoided, and the continuity and the fluency of the service are improved.
Owner:YOUDI NETWORK CO LTD

Device broadcast message distribution method and system based on dynamic polling grouping

The invention discloses an equipment broadcast message distribution method and system based on dynamic polling grouping, and belongs to the technical field of equipment broadcast, and the method specifically comprises the following steps: setting an initial query interval, sending a state query request to all equipment at every query interval by a central node, and sending a state message to all equipment after any equipment receives the query request; sending self monitoring data to a center instruction; obtaining a quantitative index in the monitoring data, generating a quantitative index sequence of any equipment every n query intervals, calculating an initial coefficient according to the quantitative index sequence, and converting the initial coefficient into an adjustment coefficient of the query intervals; calculating the duration of the next n query intervals according to the adjustment coefficient; a plurality of intervals are set, the devices with the adjustment coefficients in the same interval are divided into the same group, the query priorities of the devices in each group are ranked from large to small according to the numerical values of the adjustment coefficients, and polling is carried out in sequence according to the priorities.
Owner:ANHUI SAIDA TECH

Emergency broadcast playing method and system for disasters in outdoor scene

The invention provides an emergency broadcast playing method and system for disasters in an outdoor scene, and relates to the technical field of emergency broadcasts, cameras in a region are adopted to monitor the evacuation state of personnel in the outdoor scene in real time, and an emergency broadcast system and a rescue system are triggered through the evacuation state to perform linkage, so that bidirectional information transmission is realized; and the priority of the broadcast content played by the emergency broadcast is adjusted according to different instruction information in bidirectional information transmission, so that the broadcast content has pertinence, and rescue workers can receive key instructions.
Owner:CHENGDU XIYIDA ELECTRONIC TECH CO LTD

Audio playing method and device, computer equipment and storage medium

The invention provides an audio playing method and device, computer equipment and a storage medium. In the embodiment of the invention, a receiving device receives an audio data stream which is broadcasted by a sending device and carries an expected playing delay, and plays the audio data stream when the time from the current time to the sending time of the audio data stream reaches the expected playing delay, the expected playing delay is used for indicating the time difference between the sending moment and the time difference when the sending device plays the local stream, the sending moment represents the moment when the audio data stream is sent out from the sending device, and the local stream is used for being combined with the audio data stream to present the media content. Based on this, a synchronization scheme suitable for a local stream and an audio data stream oriented to a connectionless audio broadcasting technology can be realized, the problem of sound and picture asynchronization in scenes such as video playing and the like is avoided by using relatively low cost, and the user experience is improved.
Owner:BEIJING XIAOMI MOBILE SOFTWARE CO LTD

Multifunctional integrated digital network broadcasting system based on intelligent algorithm

The invention relates to the technical field of digital network broadcasting, in particular to a multifunctional integrated digital network broadcasting system based on an intelligent algorithm. Comprising a multi-modal data acquisition module, a broadcast content generation module, a broadcast scheduling decision module, an abnormal interference suppression module and a terminal collaborative feedback module. The multi-modal data acquisition module collects multi-source information of a coverage area in real time. And the broadcast content generation module performs intelligent clustering analysis based on the information to generate structured content. And the broadcast scheduling decision module adopts a graph attention scheduling algorithm to optimize a scheduling strategy. And the abnormal interference suppression module identifies an interference source by using a residual convolutional network, and repairs an interfered signal through a recurrent neural network. And the terminal collaborative feedback module executes playing and data feedback, and dynamically adjusts receiving parameters and pushing strategies by means of federal reinforcement learning. The intelligent level, the adaptability, the user satisfaction and the overall service efficiency of the digital network broadcasting system are remarkably improved.
Owner:GUANGDONG RUIZHAO AUDIO EQUIPMENT CO LTD

Cross-process multi-service scheduling system for 5G NR broadcast terminal

The invention provides a 5G NR broadcast terminal cross-process multi-service scheduling system, and belongs to the technical field of 5G communication, and the system comprises an application interface module which is responsible for interacting with other applications, providing a service list and processing a subscription request; the task scheduling module focuses on solving broadcast session opening conflicts and reasonably arranging a task execution sequence; the data transmission module is responsible for data transmission in different modes; the data storage module realizes task list and file cache management; and the chip adaptation module carries out packaging adaptation on SDKs of different chips. According to the invention, the terminal performance can be optimized, the user experience can be improved, and the advantages of the 5G NR broadcast technology can be fully exerted.
Owner:浪潮智能终端有限公司

Emergency broadcasting method and system integrating Beidou short message and LoRa technology

The invention discloses an emergency broadcasting method and system integrating a Beidou short message and a LoRa technology, and relates to the technical field of satellite communication and emergency broadcasting, in particular to the emergency broadcasting method and system integrating the Beidou short message and the LoRa technology. Comprising an emergency broadcast platform, a Beidou short message transmission network, a LoRa Internet of Things distribution network and a multimode emergency broadcast terminal. Cross-regional backbone transmission without dependence of a ground network is realized through a Beidou satellite link, and localized and low-cost data distribution and terminal access are carried out by using a LoRa network. The multi-mode terminal supports multi-channel receiving, broadcasting and state returning and has multi-energy power supply guarantee. According to the invention, an emergency information transmission system with integrated space and ground, longitudinal penetration and transverse cooperation is formed, and high reliability, wide coverage and rapid transmission of emergency information in an extreme environment are ensured.
Owner:TAIZHOU RADIO & TELEVISION NETWORK CO LTD

Data transmission method of intelligent broadcast

The invention relates to the technical field of intelligent broadcasting, in particular to a data transmission method for intelligent broadcasting, which comprises the following steps of: presetting a point location in a scene, and receiving data information issued by a server through the point location; after processing the data information, carrying the data information through an optical signal and sending the data information; the receiving end receives and extracts the optical signals carrying the data information, and converts the received various optical signals into electric energy to charge receiving end equipment; and decoding the extracted optical signal to obtain data information. The problems of interference control, content maintenance and energy management existing in a traditional broadcasting system are solved, and the system is particularly suitable for application scenes with high requirements for information safety and equipment endurance.
Owner:SU ZHOU SHANG ROU XIN NENG YUAN YOU XIAN GONG SI

High-reliability digital broadcasting system and abnormal fast continuous broadcasting method

PendingCN121967175AImprove the efficiency of broadcast resumptionreduce in quantitySelective content distributionTransmissionFailoverSentinel node
The invention discloses a high-reliability digital broadcasting system and an abnormal fast continuous broadcasting method, and relates to the technical field of communication technology and emergency broadcasting, and the high-reliability digital broadcasting system comprises a server A, a server B, broadcasting terminal equipment and a server abnormity recovery module, the server A is provided with two redis sentry nodes, and the server B is provided with one redis sentry node; the server exception recovery module is used for switching the broadcast and quickly continuing the broadcast when the server is exceptional; when a server is started, a redis monitoring sub-process is started, and the redis monitoring sub-process performs fault transfer and master and slave node adjustment according to a local state when a master node is offline by checking the local state, the master node state and redis sentinel node information. According to the invention, when the server is abnormal, the broadcast task which is being executed can be continuously executed within one second, so that the continuous playing efficiency is greatly improved; according to the method, the redis sentry cluster is deployed by using the two servers, so that the number of the servers can be reduced, and the cost is effectively reduced.
Owner:HUNAN KANGTONG ELECTRONICS CO LTD

Helicopter-mounted seeding device based on novel broadcasting technology

This invention provides a helicopter-mounted seeding device based on a novel broadcasting technology, relating to the field of broadcasting technology. The helicopter-mounted seeding device includes three outriggers with isosceles triangular endpoints and a hopper fixed between the three outriggers. Two of the outriggers running longitudinally are each fixedly equipped with stabilizing rudders to increase balance. On opposite sides of the three outriggers, from top to bottom, are an upper beam, a connecting beam, and a lower beam. The connecting beam is triangular and includes a left connecting beam, a rear connecting beam, and a right connecting beam. A power supply is mounted at the midpoint of the upper end of the rear connecting beam via a power mounting plate. Gasoline engine mounting plates are mounted on the upper ends of the left and right connecting beams via No. 4 bolts, and a gasoline engine is mounted on the gasoline engine mounting plates. This invention not only meets the requirements for aerial seeding of various crops but also reduces the impact of cylindrical circulation and increases the balance of the hopper by adding a stabilizing rudder structure.
Owner:SHAANXI HELICOPTER CO LTD

Traffic accident broadcasting method, GNODEB base station, equipment and medium

The invention relates to the technical field of emergency broadcasting, and discloses a traffic accident broadcasting method, a GNODEB base station, equipment and a medium. The method comprises the following steps: acquiring to-be-broadcasted traffic accident information at a traffic accident occurrence place; according to the road direction of the traffic accident occurrence place, the orientation of the directional antenna of the GNODEB base station is set, so that the GNODEB base station transmits in the road direction of the traffic accident occurrence place, and the signal coverage range of the GNODEB base station in the road direction of the traffic accident occurrence place is enhanced while the signal coverage range of the GNODEB base station in the road direction of the traffic accident occurrence place is increased. The signal coverage range of the GNODEB base station in the road direction of a non-traffic accident occurrence place is reduced; according to the embodiment of the invention, the traffic accident information is sent to the air interface, and the traffic accident information is broadcasted, so that the terminal equipment obtains the traffic accident information through the air interface within the signal coverage range of the GNODEB base station, the cost of broadcasting the traffic accident information can be reduced, and the broadcasting range is expanded.
Owner:BEIJING CHANGKUN TECHNOLOGY LTD

Teacher status detection method, device, and storage medium

The present application discloses a teacher status detection method, device, and storage medium, and relates to the field of recording and broadcasting technology. The method includes: identifying a first target object in a teacher panoramic image, and identifying a second target object in a student panoramic image, wherein the first target object and the second target object are both imaging results with the teacher as the shooting target; determining the change trend of the first target object according to the teacher panoramic image and the historical teacher panoramic image, and determining the change trend of the second target object according to the student panoramic image and the historical student panoramic image; determining the target object state according to the first target object and the corresponding change trend and the second target object and the corresponding change trend, and the target object state includes the state of going up the podium and the state of going down the podium. Through the above-mentioned technical means, the error caused by the difference in the height of the teacher when detecting the state of going up and down the podium by a single panoramic image can be eliminated, and the problem that the state of going up and down the podium of the teacher cannot be accurately judged in the prior art can be solved.
Owner:GUANGZHOU KINDLINK INTELLIGENT TECHNOLOGY CO LTD

Multi-terminal audio and video synchronization method and device, video transmission system and readable storage medium

The embodiment of the invention relates to the technical field of audio and video broadcasting, in particular to a multi-terminal audio and video synchronization method and device, a video transmission system and a readable storage medium, and the method comprises the steps: generating a first frame starting signal for synchronization through a first frame starting signal generation module, and outputting the frame starting signal to each audio and video terminal as a synchronization signal; a second frame starting signal generation module is arranged in each audio and video terminal, a second frame starting signal is obtained through the second frame starting signal generation module, a clock frequency deviation value is obtained through calculation according to the first frame starting signal and the second frame starting signal, and finally a synchronous clock is obtained; and each audio and video terminal synchronously outputs the original audio and video data according to the clock frequency deviation value and the first frame starting signal. The method is low in implementation and deployment difficulty, low in cost burden and good in flexibility.
Owner:SENKE VIDEO (SHENZHEN) CO LTD

Abnormity monitoring and warning system based on DRM digital amplitude modulation broadcast signals

PendingCN120238222AHydraulic/pneumatic visible signallingBroadcast information monitoringDisplay boardAudio signal
The invention relates to the technical field of broadcasting, and discloses an abnormity monitoring and warning system based on DRM digital amplitude modulation broadcasting signals, which comprises a control main board, a delay warning setting board, an audio amplitude display board, a tuning screen board and a power supply module, the control main board adopts a main control chip of a high-performance single-chip microcomputer for logic control; the delay alarm setting board is composed of a TM1637 LED drive control special circuit, an LED nixie tube and four function keys. The audio amplitude display panel monitors the audio amplitudes of the signal source signal and the tuning signal in real time through two independent signal processing channels; the tuning screen board comprises a high-precision display unit and a multifunctional control panel. The DRM digital amplitude modulation broadcast audio signal can be received and demodulated without changing a broadcast link of an original transmitting station, whether the signal source audio of the transmitting station and the received audio signal break down or not is monitored and analyzed, the corresponding audible and visual alarm information is sent out when the fault occurs, and the manual inspection intensity is effectively reduced.
Owner:广东省肇庆中波转播台

A news intelligent broadcasting method and system based on artificial intelligence

The invention discloses a method and system for intelligent news broadcasting based on artificial intelligence, comprising the following steps: S1, using a news crawling tool to obtain data and generate structured event data; S2, using an improved BERT model to generate an event knowledge graph, and using an improved K-Medoids clustering algorithm for cluster analysis; S3, generating a dynamic broadcast script through a multimodal generative adversarial network; S4, analyzing the user's emotional state, and generating personalized voice broadcast content; S5, combining an event-driven mechanism and time-sensitivity optimization rules to generate an enhanced news summary; S6, using a hierarchical attention mechanism to allocate dynamic weights, and combining time-sensitivity optimization rules to dynamically adjust the order of news broadcasting; S7, performing logical consistency detection on news broadcast content; S8, adjusting the broadcast content and generating updated news broadcast content in real time. The present invention combines improved algorithms, sentiment analysis, and dynamic broadcasting technology to achieve personalized news broadcasting.
Owner:金华市新闻传媒中心

Group control method and system based on wireless expansion broadcast technology

The invention provides a group control method based on a wireless expansion broadcast technology, and relates to the technical field of wireless communication. The method is applied to a group control system, and comprises the following steps: a mobile terminal sends a broadcast packet to a node device, the node device being a sub-device in a sub-device group; after acquiring the broadcast packet, the node equipment broadcasts the broadcast packet to other sub-equipment in the sub-equipment group; the broadcast packets comprise a first broadcast packet and a second broadcast packet, the first broadcast packet is a basic broadcast packet, the second broadcast packet is an extended broadcast packet, and the second broadcast packet comprises a group control instruction; the sub-equipment acquires a second broadcast packet based on the first broadcast packet after acquiring the first broadcast packet, and extracts a corresponding control instruction from the second broadcast packet; and the sub-equipment in the sub-equipment group responds to the control instruction to execute corresponding operation. According to the method, the transmission efficiency is improved, and the real-time performance and the consistency of sub-device group control are improved.
Owner:HANGZHOU TUYA INFORMATION TECH CO LTD

Image processing method and device, equipment and storage medium

The invention provides an image processing method and device, equipment and a storage medium, and relates to the technical field of computers, in particular to the technical field of computer vision and network live broadcast. The method comprises the following steps: acquiring a first size of a first image in a canvas and a target pixel ratio of target equipment; determining a second image according to the first size and the target pixel ratio; performing fragmentation processing on an image area of the first image in a canvas, and determining a target position of each sub-area according to a fragmentation result; and performing fragmentation processing on the second image to obtain each sub-image content, and displaying the corresponding sub-image content according to the target position of the sub-region so as to display the second image in a canvas.
Owner:BEIJING BAIDU NETCOM SCI & TECH CO LTD

Omnidirectional broadcast

The utility model relates to the technical field of omni-directional broadcast, in particular to an omni-directional broadcast, which comprises a bottom plate, the upper side of the bottom plate is fixedly connected with a fixed round seat, the upper side of the fixed round seat is clamped with an embedded block, the lower side of the embedded block is connected with insertion rods in an array manner, the lower side of the embedded block is provided with a clamping block, and the upper side of the embedded block is fixedly provided with an omni-directional broadcast main body. According to the omni-directional broadcast mounting and dismounting device, the omni-directional broadcast can be conveniently and rapidly mounted or dismounted through clamping connection of the insertion rod, the clamping block and the fixed baffle, then the clamping arc plate with elasticity can further clamp the omni-directional broadcast at the embedded block, a screwdriver does not need to be used in cooperation, and therefore the working efficiency during mounting and dismounting of the omni-directional broadcast is improved; the distance between the two L-shaped mounting plates can be flexibly adjusted to adapt to different mounting positions, so that the omni-directional broadcast on the bottom plate is fixed, then the extending frame and the protective shell at the top seat protect the omni-directional broadcast together, and the safety of the omni-directional broadcast is improved.
Owner:BEIJING HENGXINGKETONG S&T TECH CO LTD

Millisecond-level forced insertion intelligent adaptation method and system for multi-mode emergency broadcast large screen

The invention provides a millisecond-level forced insertion intelligent adaptation method and system for a multi-mode emergency broadcast large screen, and relates to the technical field of emergency broadcast, and the method comprises the steps: 1, receiving an emergency broadcast signal from a superior emergency broadcast platform and at least one path of external multimedia input signal; and step 2, performing preprocessing and caching based on a divide-and-conquer strategy on the emergency broadcast signal and the external multimedia input signal, decomposing each path of input signal into independent signal processing subtasks by the divide-and-conquer strategy, performing decoding and caching operation on each subtask in parallel, and endowing the emergency broadcast signal with the highest priority. According to the invention, rapid broadcasting of the emergency information, multi-mode fusion display and intelligent recovery of the playing state are realized.
Owner:SICHUAN BIHONG BROADCASTING TV NEW TECH CO LTD

Noise management and control system for broadcasting equipment

The invention discloses a broadcast equipment noise management and control system in the technical field of broadcast, the system can be carried on broadcast equipment with a processor for use, the system comprises a processing center, and the processing center comprises an audio collection unit, an audio processing unit and an audio processing unit, the audio conversion unit is used for converting audio signals of the mobile phone and comprises a conversion module; the audio analysis unit is used for analyzing audios and sound waves and comprises a waveform checking module, a waveform analysis module and a phase recognition module; and the noise processing unit is used for processing and reducing the audio noise. The audio noise reduction and the volume self-adjustment are carried out on the basis of the cross-correlation algorithm and the cosine similarity algorithm by acquiring the played audio and the environmental noise data in real time, so that the noise reduction operation of the broadcasting equipment is realized, the method can be applied to various broadcasting equipment, the audio noise during broadcasting is reduced, and the broadcasting effect is improved.
Owner:XINYANG NORMAL UNIVERSITY

Low-power dtmb transmitter carrier recovery and constellation mapping enhancement method and platform

This invention discloses a low-power DTMB transmitter carrier recovery and constellation mapping enhancement method and platform, belonging to the field of terrestrial digital television broadcasting technology. The transmitter samples feedback signals from the intermediate frequency (IF), RF preamplifier, or power amplifier output. Based on the PN420, PN595, or PN945 frame header characteristics, it performs cyclic correlation, sliding correlation, or segmented correlation to obtain frequency offset, phase error, and correlation confidence, and drives a digital phase-locked loop to complete transmitter carrier self-calibration. The system generates non-uniform pre-scaling and pre-rotation parameters based on the feedback constellation error, causing the antenna port constellation to converge to a standard DTMB constellation; enhanced constellation mapping is enabled when supported by a dedicated receiver. The low-power control module reduces power consumption and improves transmission quality based on correlation confidence, EVM scheduling correlator, phase calculation, constellation pre-compensation, digital predistortion, and Doherty power amplifier bias.
Owner:贵州省广播电视局七六一台

OTA upgrading method and system based on 5G NR broadcast

The invention discloses an OTA upgrading method and system based on 5G NR broadcast, belongs to the technical field of 5G NR broadcast, and aims to solve the technical problem of how to improve the OTA upgrading efficiency, reduce the cost and improve the OTA upgrading safety and user experience. According to the technical scheme, the method comprises the steps of upgrading plan making and upgrading information processing, wherein an OTA upgrading server makes a detailed OTA upgrading plan according to the type and version condition of terminal equipment, and the upgrading time, the upgrading object and the upgrading content are determined; according to the OTA upgrading plan, upgrading information including an application ID, a version description, verification information and an applicable terminal identifier is generated and arranged into a format suitable for 5G NR broadcast transmission, the upgrading information is encrypted, encrypted upgrading information is generated, and the upgrading information, the encrypted upgrading information and the OTA upgrading plan are stored at the same time; broadcasting resource allocation and session establishment; broadcasting upgrading information; and the terminal equipment receives and processes.
Owner:SHANDONG ARTAPLAY INTELLIGENT TECH CO LTD

A multi-terminal networked audio broadcast system

This invention discloses a multi-terminal network audio broadcasting system, belonging to the field of audio broadcasting technology. It includes a central server and multiple distributed audio terminals. The central server comprises: a geographic information module for storing digital elevation models and the deployment locations of each audio terminal; an adaptive coding module for dynamically adjusting the redundancy coding rate of the audio stream based on link quality feedback reported by each audio terminal; and a routing calculation module for generating a multi-hop broadcast tree based on a terrain-compensated propagation loss model. Each audio terminal includes a positioning module for collecting its real-time geographic coordinates and reporting them to the central server. This invention achieves accurate path loss calculation, adaptive redundancy coding, dynamic power adjustment, intelligent broadcast tree construction, efficient packet loss recovery, and dynamic relay coverage, improving the coverage, stability, and energy efficiency of audio broadcasting.
Owner:SHANDONG ZHIHUISHENG TECH GRP CO LTD

Method and system for fusing global digital emergency broadcast and emergency start

The invention discloses a global digital emergency broadcast and emergency start fusion method and system, and relates to the technical field of digital emergency broadcast, and the method comprises the steps: carrying out the parallel scanning of DAB, DRM, CDR, FM and AM broadcast frequency bands through a multimode radio frequency front end of terminal equipment, and continuously monitoring each standard beacon frame to detect an emergency identifier; when any system detects an emergency identifier, event type, grade, position and time information is extracted, fusion verification is carried out through cross-system semantic alignment and a credibility scoring model, and an emergency credibility score ETS is generated; if the ETS is larger than a preset threshold value, it is judged that the emergency event is an effective emergency event, the emergency event is packaged into a lightweight emergency broadcast compressed packet EBP, and the EBP comprises an event unique identifier, a geographical range, a response action list and a digital signature; and activating a short-distance communication module of the terminal, and carrying out decentralized relay propagation on the EBP to adjacent equipment in the LoRa or BLE Mesh network based on a geographical hash routing algorithm.
Owner:SHENZHEN CITY DIGITAL TECH CO LTD

Rainproof and dustproof cloud broadcast distribution box

The utility model discloses a rainproof and dustproof cloud broadcast distribution box, and relates to the technical field of cloud broadcast. The power distribution box comprises a power distribution box main body and a waterproof protective shell, a mounting plate is welded and fixed in the power distribution box main body, a heat dissipation fan is clamped and fixed in the power distribution box main body, a filter element is clamped at the bottom of the heat dissipation fan, a scraper is sleeved on the peripheral surface of the filter element, and the waterproof protective shell is clamped at the top of the outer side of the power distribution box main body in a sliding manner. By arranging the distribution box main body and the waterproof protection shell, the problems that the sealing cover of the distribution box is usually located on the side face of the distribution box and is sealed through a rubber ring, rainwater is prone to being accumulated in a gap between the sealing cover and the distribution box, the rubber ring and the distribution box shell are corroded, and long-time use causes damage to the sealing cover and the waterproof protection shell are solved. The problems that a rubber ring is abraded, aged and the like, a heat dissipation ventilation opening of the distribution box is small in size, the air velocity and the heat dissipation efficiency are affected, and a filter screen is easily blocked by external dust are solved.
Owner:HENAN MECHANICAL & ELECTRICAL ENG COLLEGE

A small program startup control method and device

The present invention discloses a method and device for controlling the startup of a small program, and relates to the field of computer technology. A specific implementation of the method includes: after the application is started normally, a broadcast event is sent to a first broadcast to start a first small program process corresponding to the first broadcast; in response to a startup operation on a small program, a small program is loaded using the first small program process; while displaying the operation homepage of a small program in the application, a broadcast event is sent to a second broadcast after the first broadcast to start a second small program process corresponding to the second broadcast. This implementation uses the Android platform broadcast technology to preload the process, and after the host App is started, a broadcast event is sent to prepare the small program process in advance. When the small program is started, the preloaded small program process is directly used to load, avoiding the waiting time of starting an empty process, and greatly improving the startup speed of the small program.
Owner:BEIJING WODONG TIANJUN INFORMATION TECH CO LTD +1

One-tower multi-frequency self-standing medium wave launching tower

The utility model belongs to the technical field of medium-wave broadcasting, and relates to a one-tower multi-frequency self-standing medium-wave transmitting tower, which mainly comprises a plurality of supporting upright posts, a feeder line central upright post for fixedly transmitting a transmitting signal, and a plurality of insulating devices which are arranged on the supporting upright posts and partition the supporting upright posts into independent transmitting units, the height of each transmitting unit can be determined according to the required transmitting frequency, and the tower column is further adjusted to achieve the optimal transmitting effect; and compared with a traditional launching tower, the contact area with air is reduced, the device can be suitable for different seasonal changes, manual adjustment of the network is not needed, and adaptability and reliability are high. According to the utility model, the integrated self-standing tower column is provided with a plurality of transmitting units, so that the integrated self-standing tower column can simultaneously transmit various signals with different frequencies, the structure is simplified, the cost is reduced, the occupied area is saved, and the signals are efficiently transmitted; the whole design is scientific and reasonable, the structure is simple, the land cost can be effectively saved, the manpower demand is reduced, and the application degree is improved.
Owner:威海市荣成转播台

Multi-person collaborative virtual interaction method based on MR recording and broadcasting technology

The application relates to an artificial intelligence technology and discloses a multi-person cooperative virtual interaction method based on MR recording and broadcasting technology, which comprises the following steps: constructing a teaching auxiliary courseware according to relevant course data of any course, expanding the teaching auxiliary courseware to obtain an assembly interaction system, performing orthogonal transformation on a three-dimensional virtual model constructed based on the assembly interaction system to obtain a transformed model, mapping the transformed model to a world coordinate system and constructing a virtual simulation platform corresponding to the transformed model in the world coordinate system, creating a stream socket corresponding to a user terminal and establishing a connection between the user terminal and the virtual simulation system based on the stream socket, and enabling a user corresponding to the user terminal to perform a virtual interaction operation in the virtual simulation system when a content interaction request is received. The application further discloses a multi-person cooperative virtual interaction device based on the MR recording and broadcasting technology. The application can solve the problem of low efficiency of multi-person cooperative virtual interaction based on the MR recording and broadcasting technology.
Owner:辽宁向日葵数字技术股份有限公司