49 results about "Broadcast system" patented technology

This application discloses an emergency broadcasting device for highway tunnels in the field of tunnel communication technology, including an emergency telephone broadcasting system platform, a communication module, and multiple communication terminals. The multiple communication terminals are electrically connected to the communication module, and the communication module is electrically connected to the emergency telephone broadcasting system platform. The multiple communication terminals are fixedly spaced within the tunnel. Each communication terminal includes a synchronous control unit and a camera. The synchronous control unit is used to communicate with the emergency telephone broadcasting system platform. The camera is used to transmit images from the synchronous control unit and its surrounding environment to the emergency telephone broadcasting system platform via the communication module. This solution solves the problem that current tunnel broadcasting command systems may affect command due to audio mismatch errors.

To make it possible to measure a transmission time difference of broadcast signals between relay devices with higher accuracy without increasing facility cost or modifying transmission signals.SOLUTION: A broadcasting system 1 includes: a master station 20 that transmits a broadcast signal composed of OFDM frames at a first frequency; a plurality of relay devices 30 that receives the broadcast signal transmitted from the master station 20 and transmits the received broadcast signal at a second frequency; and a calculation device 10 that calculates a transmission time difference of the broadcast signal from the plurality of relay devices 30. Each of the plurality of relay devices 30 measures a time difference between transmission time at which the received broadcast signal is transmitted and a reference time signal, and transmits time information indicating the time difference to the calculation device 10. The calculation device 10 calculates the transmission time difference of the broadcast signal between the plurality of relay devices 30 on the basis of the time difference measured by each of the plurality of relay devices 30.SELECTED DRAWING: Figure 1

The application discloses a STAR-RIS assisted short packet communication broadcast system optimization method based on TD3, utilizes statistical channel state information of a broadcast system under a Rayleigh fading channel to design a passive beamforming joint optimization method based on a double-delay deep deterministic policy gradient algorithm, and improves the performance of the short packet communication broadcast system. Specifically, firstly, a transmission reflection type reconfigurable intelligent surface assisted short packet communication broadcast system model is constructed, including system composition, channel modeling, and introduction of a coupling phase shift model of a physically achievable transmission reflection type reconfigurable intelligent surface; secondly, a base station end active beamforming and transmission reflection type reconfigurable intelligent surface passive beamforming joint optimization method based on a double-delay deep deterministic policy gradient algorithm is constructed by utilizing statistical channel state information to maximize the minimum value in the average reachable rate of each user, so that all users can obtain good communication quality, and high-reliability low-latency broadcast communication is realized.

This disclosure relates to coverage enhancement for downlink broadcast channels. This disclosure provides systems, methods, and apparatus for configuring and signaling the repetitive transmission of broadcast system information on downlink (DL) channels, including computer programs encoded on a computer storage medium. In some implementations, a user equipment (UE) may receive an indication for repetitive configuration of broadcast information carried on a physical downlink shared channel (PDSCH), may identify several time slots configured to carry broadcast information on the PDSCH based at least in part on the repetitive configuration, and may receive the broadcast information carried on the PDSCH in the identified time slots.

This invention provides a method and system for optimizing the spatial sound field of audio signals in a marine broadcasting system, relating to the field of signal processing technology. The method includes: acquiring actual sound field data; employing zoned active sound field control, deploying a ring-shaped anti-phase loudspeaker array and a pickup array to construct an acoustic isolation zone, and deploying independent directional loudspeaker arrays in each functional area; optimizing beam parameters in each area using a differentiated multi-objective reward function based on a deep reinforcement learning algorithm; and constructing a multi-channel adaptive filter bank based on ship navigation state parameters to output a compensation signal. This invention achieves differentiated sound field management in different functional areas of the ship, improving sound transmission quality.

The application relates to a face prediction model training method and device, a face multi-task prediction method and device, a live broadcast system, computer equipment and a computer readable storage medium. The training method comprises the following steps: grouping face image sets according to prediction tasks, and performing data labeling on the face image groups respectively; a feature map pyramid network and a prediction task layer corresponding to each prediction task are constructed, the prediction task layers are connected to feature maps output by the feature map pyramid network respectively to obtain a face multi-task prediction model; loss functions of the prediction task layers of the face multi-task prediction model in prediction training are configured respectively; and the face multi-task prediction model is trained by using the labeled face images and according to the loss functions. According to the technical scheme, the prediction model performing multiple prediction tasks simultaneously can be trained, the efficiency of face multi-task prediction is improved, and the prediction demand in a live broadcast scene is particularly suitable, and the use demand of different real-time live broadcast scenes is met.

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.

This invention relates to the field of ship safety communication technology, and particularly to an emergency broadcast multi-signal identification triggering method and system, comprising: acquiring raw signal data from multiple heterogeneous signal sources, and acquiring a preprocessed signal sequence corresponding to each signal source based on the raw signal data; acquiring the signal periodic characteristics and signal dynamic characteristics of each signal source based on the preprocessed signal sequence; acquiring a single-channel discrimination score based on the signal periodic characteristics and signal dynamic characteristics of the signal source, and acquiring a valid signal source based on the single-channel discrimination score; and acquiring a joint discrimination score of multiple signal sources based on the valid signal sources. This invention can effectively distinguish between real event signals and vibration-induced pseudo-signals in complex sea conditions and complex accident scenarios, providing a more accurate basis for response decision-making for ship emergency broadcast systems, thereby optimizing the situational awareness and emergency response accuracy of ship emergency broadcast systems.

To efficiently provide an adjustment function for a partial component of a broadcasted voice of a broadcasted content.SOLUTION: A separation unit separates control information indicating the constitution of a broadcast program and a voice asset of at least the broadcast program from a broadcast signal. When the control information includes adjustable information indicating that the properties of an element component being a partial component of the voice asset is adjustable, a voice processing unit outputs adjustment guide information for guiding adjustment of the properties and adjusts the properties of the element component in response to an input.SELECTED DRAWING: Figure 5

1. The name of the design product: network digital power amplifier. 2. The use of the design product: mainly applied to IP network broadcast system, supporting the loudspeaker function of transmitting SIP phone, ONVIF monitoring platform and audio data through multicast protocol. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: design 1 perspective view. 5. Design 1 is specified as the basic design.

A user equipment that communicates over a radio interface with a base station apparatus of a radio access network (RAN) comprises processor circuitry and receiver circuitry. The processor circuitry is configured to initiate a first type system information block (SIB) acquisition process to receive a first type SIB. The first type SIB comprises scheduling information of a second type SI message, the second type SI message comprising at least one system information block (SIB); and an indication of broadcast status for the second type SI message, the indication indicating broadcasting. The receiver circuitry is configured to receive the first type SIB. The processor circuitry is further configured to initiate an SI message acquisition process to receive the SI message. In a case that a stored version of one of the at least one second type SIB is not valid, the first type SIB acquisition process is initiated upon a failure of the SI message acquisition process.

The utility model discloses a networked broadcast system, which comprises a networked broadcast host server, an Ethernet and a broadcast playing terminal, and the broadcast playing terminal is in communication connection with the networked broadcast host server through the Ethernet. The broadcast playing terminal comprises a networked outdoor partition explanation column loudspeaker, a network visual talkback terminal, a network visual LED screen terminal and an intelligent broadcast lamp post. The networked outdoor partition explanation sound post, the network visual talkback terminal, the network visual LED screen terminal and the intelligent broadcast lamp post communicate with the networked broadcast host server through the Ethernet, and broadcast playing, talkback and LED screen display functions are achieved under the control of the networked broadcast host server. The technical problem that an existing networked broadcasting system is difficult to meet diversified requirements of users is solved.

Certain example embodiments may relate to a 5G and / or 6G communication system for supporting higher data transmission rates than 4G communication systems such as LTE. A method performed by a transmitter in a communication system, which method may include: determining the number of input bits; determining a base matrix on the basis of the number of input bits; determining a lifting size (Z) on the basis of at least one of the number of input bits or the base matrix; determining a parity check matrix on the basis of at least one of the base matrix or the lifting size (Z); and performing encoding on the basis of the parity check matrix and the input bits. The size of the parity check matrix is Z×(k+1) Z, the last column block of the parity check matrix corresponds to parity bits, a Z×kZ column block of the parity check matrix corresponds to information word bits, all of modulo-Z values of differences in cyclic shift values corresponding to circulant permutation matrices constituting a Z×Z circulant matrix are different, and all of the circulant matrices corresponding to the information word bits are composed of three or more circulant permutation matrices.

Enhance the protection of broadcast content without requiring hardware changes. [Solution] The receiving processing unit detects notification information regarding the transmission of download data from the received signal. When the notification information contains limited reception processing program information indicating a limited reception processing program, the software update unit acquires download instruction information and download data blocks during the transmission period notified by the notification information. The software update unit extracts the limited reception processing program from the download data block containing download identification information common to the download identification information described in the download instruction information indicating the limited reception processing program information, and sets the extracted limited reception processing program in the limited reception processing unit.

The application discloses an air-ground communication method and device, a terminal and an ATG base station, and relates to the technical field of communication, to solve the problem that the existing air-ground communication system has long-time same-frequency interference on air mobile services. The method comprises the following steps: a terminal determines a first candidate ATG base station group according to position information of the terminal and preset air-to-ground ATG base station list information; the terminal sends a wake-up message to the first candidate ATG base station group to wake up the first candidate ATG base station group and trigger the first candidate ATG base station group to send system messages; and the terminal establishes a communication connection with a target candidate ATG base station in the first candidate ATG base station group when the target candidate ATG base station sends a system message. In this way, the ATG base stations along the air route are changed from a periodic broadcast mode to a long-time silent mode by the terminal waking up and triggering the ATG base stations to broadcast system messages, so that the long-time same-frequency interference of the periodic wide beam of the ground ATG base station on the air mobile services is effectively avoided.

The utility model belongs to multimedia communication regulation and control technical field, specifically disclose a kind of emergency early warning multimedia integrated machine, through modularization, integrated compact structure design, fully consider the complex and severe installation environment outdoors, microprocessor application technology, multimedia interactive display system, emergency broadcasting system, multi-signal acquisition and processing system, intelligent sound-light control system, automatic energy-saving environmental protection system, proprietary wireless communication system and multi-level center platform management system and other various high-tech means fusion innovation, form intelligent multifunctional terminal system equipment, compared with other mature indoor liquid crystal screen display equipment, there is big difference from internal integrated module, structure design, appearance and so on each aspect.No matter from the size of liquid crystal screen is different, it is suitable for business street, square, station, park, road two sides, community and residential quarter use, in current market environment has uniqueness and novelty.

A UE that communicates with a base station apparatus comprises: receiver circuitry to receive a first type SIB comprising: scheduling information associated with a SI message, the SI message comprising a second type SIB, wherein the scheduling information comprises a periodicity of the SI message; and a parameter indicating an SI window length; and processor circuitry to: determine whether a stored version of the second type SIB is not valid; and in response to the determining: initiate, based on the periodicity and the SI window length, an SI message acquisition process to monitor the SI message in a plurality of SI-window occasions; determine that the SI message acquisition process has failed when the SI message is not successfully received within a maximum number of SI-window occasions; and initiate a re-acquisition process to re-acquire the first type SIB from the base station apparatus upon the determination of the failure of the SI message acquisition process.

This utility model relates to the field of audio equipment technology, specifically to a digital ceiling speaker with noise detection. It includes a circular housing with a frame at the opening. A first-layer metal base plate is fixed inside the frame, and an excitation oscillator is mounted on its front. A second layer of metal isolation plates and a top-layer metal isolation plate are sequentially arranged on the back of the first-layer metal base plate. A power module and a digital power amplifier module are mounted on the back of the first-layer metal base plate. A decoder module, a wireless broadcasting module, and a noise detection module are mounted on the second-layer metal isolation plates. An audio constant-voltage output transformer is mounted on the top-layer metal isolation plate. This design integrates noise detection, digital signal processing, and constant-voltage output functions, making it particularly suitable for network digital broadcasting systems in public places such as subways and airports. Its core feature is the ability to achieve adaptive adjustment of environmental noise and expansion of network broadcasting signals through a layered modular design.

The disclosure relates to a communication method and system for fusing a fifth generation (5G) communication system to support a higher data rate beyond a fourth generation (4G) system using Internet of Things (IoT) technology. The disclosure can be applied to intelligent services based on 5G communication technology and IoT-related technology, such as smart homes, smart buildings, smart cities, smart cars, connected cars, healthcare, digital education, smart retail, security, and safety services. A method for a terminal and a base station in a wireless communication system and a terminal and a base station in a wireless communication system are provided. The method for the terminal includes receiving, from the base station, downlink control information including modulation and coding scheme (MCS) information, identifying a first transport block size based on the downlink control information, and identifying a second transport block size based on the first transport block size and a transport block size candidate set, wherein the transport block size candidate set includes elements having an interval of a multiple of 8.

At least one embodiment relates to an event broadcast and relay system. There is an event relay system that transmits an event taking place inside a booth in real time to users at a given distance. Specifically, what the invention proposes, as stated above, is an event relay system comprising a soundproof booth both from the outside to the inside and from the inside to the outside which broadcasts said event taking place inside it to a plurality of receivers carried by users within a given range area.

The application discloses a remote guide live broadcast system based on panoramic video, belonging to the technical field of live broadcast and guide, comprising: a panoramic acquisition module generates a live broadcast stream with a guide voice through video splicing, audio processing and adaptive coding; a tourist terminal realizes matching of explanation content and preloading of data by combining positioning and viewpoint prediction; an intelligent interaction module triggers companion chatting when there is no guide audio, and optimizes experience by fusing emotional computing and multi-modal interaction; a voice recognition module completes voice instruction processing and multi-lingual interpretation; an augmented reality module realizes accurate superposition of real scene and virtual content through pose solution, virtual-real fusion rendering, light field and occlusion processing; a self-evolution optimization module collects tourist behavior feedback, and combines deep reinforcement learning and federated learning to jointly optimize a response strategy model and a content recommendation model, so that the system can realize self-evolution and personalized guide, and the immersion and interactivity of remote guide are improved.

The application relates to the field of intelligent traffic and public safety, and particularly discloses an emergency sound range coverage strategy optimization method and system. The method comprises the following steps: constructing a dynamic three-dimensional acoustic attention domain for a moving target in real time according to a video event and geographic information; based on the attention domain, calculating parameters for driving multiple sound columns to work cooperatively through a beam forming algorithm, so as to focus sound waves in a target area and suppress sound energy in a non-target area; collecting real sound field data for comparison and feedback, and online calibrating driving parameters to ensure coverage effect; when multiple events occur simultaneously, generating a global scheduling strategy through priority evaluation and conflict arbitration, and orderly allocating sound column resources; the system comprises four functionally corresponding modules. The application realizes accurate acoustic tracking and adaptive coverage of a moving target, effectively solves the problems of poor broadcast effect and resource conflict in multiple events in a complex environment, and significantly improves the intelligent level and intervention efficiency of an emergency broadcast system.

The present application relates to a television receiver, a system, a broadcasting system, a distribution system, an intermediate server. In the prior art, in order to select a video content based on a broadcast wave and a video content distributed through communication, various methods are provided, and a viewer needs to play a video content after selecting each program selection method. The present application is configured of a broadcasting system that transmits a broadcast program, a distribution system that distributes a video through a network, and a television receiver that receives a video content based on a broadcast and a video content based on a network distribution, and in the distribution system, broadcast program information and distribution program information are transmitted to the television receiver through communication.

This invention discloses an intelligent switching method for a broadcast master / backup system based on AI multimodal perception, comprising the following steps: Step 1, constructing an AI multimodal state assessment module to achieve real-time assessment and early warning of the master node through multimodal acquisition, LSTM evaluation, and fault prediction; Step 2, constructing a high-precision lossless switching module to achieve μ-level synchronization and seamless switching based on clock synchronization, a custom protocol, and dual buffering; Step 3, constructing a dynamic threshold adaptation module to adjust thresholds based on scene tags and historical data to solve the fixed threshold adaptation problem; Step 4, constructing a fault self-healing closed-loop module to achieve closed-loop self-healing after the master node is repaired, reducing manual intervention. This invention improves the stability, reliability, and intelligence level of the broadcast system while reducing manual intervention.

This document describes methods, devices, systems, and means for alerting a user equipment, UE, to an overcrowding situation by network entity, the network entity storing UE identifiers and region identifiers, already known to the network entity, for multiple UEs and for each region identifier, determining a number of UEs in a spatial region associated with the region identifier. The network entity compares comparing the determined number of UEs with a region identifier to a first threshold value. If the determined number of UEs in the spatial region exceeds the first threshold value, the network entity transmits a first message including a warning message indicator to UEs in the spatial region, the warning message indicator providing an indication of warning message parameters and, based on the warning message parameters, broadcasts a second message to the UEs in the spatial region.

The disclosure relates to a communication technology and a system thereof that fuse a 5G communication system supporting a higher data transmission rate than a 4G system with IoT technology. The disclosure can be applied to intelligent services, such as smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail, security and safety-related services, etc., based on 5G communication technology and IoT-related technology. In the disclosure, a method and apparatus for determining a size of a transport block in a communication or broadcasting system are disclosed.

The disclosure relates to a 5G or 6G communication system supporting a higher data transmission rate than the previous 4G communication system, such as LTE.