29results about "Broadcast systems control" patented technology

Embodiments of the present application provide a soft mute control method and device for a radio device, a medium and a product. By extracting the spectral deviation feature and the time domain energy feature of the digital audio signal of the radio device, the spectral deviation feature can reflect the frequency spectrum similarity between the signal and the noise, and the time domain energy feature can reflect the signal strength. Combined with multi-state decision and energy decision, multi-dimensional decision of the signal state is performed to realize accurate identification of the signal state, and then the output gain is dynamically adjusted. Compared with the prior art, not only the signal receiving strength index is relied on for adjustment, but also the problem of large and small sound caused by signal strength fluctuation due to position change is avoided. The spectral deviation feature is used to effectively distinguish between effective signals and noise, improve the accuracy of soft mute decision, and the time domain energy feature is used as auxiliary decision to enhance the reliability of the system in a low energy scene, so that the volume is smooth and continuous, and the user's radio experience is improved as a whole.

Digital radio signals and apparatuses for providing or receiving such signals are described. A digital radio signal has one or more of a link type indicator, indicating the source of image content. A further digital radio signal has compressed SVG data. A further digital radio signal has an indicator indicating a presentation style for text information. A further digital radio signal has an indication of a target group for an information object. A further digital radio signal has signature data. A further digital radio signal has a predetermined start object identifier.

The utility model relates to the technical field of broadcast management, and discloses an airport terminal broadcast voice level broadcasting system, which comprises a broadcasting unit, a broadcasting unit and a control unit, the broadcasting unit and the broadcasting unit are both connected with the control unit, the broadcasting unit is used for sending broadcast information to the control unit, and the control unit is used for controlling the broadcasting unit. The control unit is used for controlling the playing unit to play broadcast information; the broadcast information is internally provided with a broadcast level label, the broadcast level label is used for storing the priority level of the broadcast information, the control unit is internally provided with a broadcast level control module, and the broadcast level control module is used for adjusting the playing sequence of the broadcast information according to the priority level in the broadcast level label. The airport broadcast management system has the beneficial effect of high airport broadcast management efficiency.

A portable information terminal includes a controller configured to control a communication interface to transmit a charging permission response to a broadcast receiving apparatus in response to a charging permission request data transmitted when a broadcasting program that a user of the broadcast receiving apparatus desires to view contains an asset that requires charging. The charging permission response is allowed to be transmitted when positional information indicates that the portable information terminal is positioned inside of a predetermined positional range and apparatus identification information in the charging permission request data, by which the broadcast receiving apparatus is allowed to be identified, coincides with apparatus identification information stored in a memory. The controller controls the communication interface to transmit a charging denial response to the broadcast receiving apparatus when the positional information indicates that the portable information terminal is positioned outside of the predetermined positional range.

The invention discloses a timing ringing method and device for campus broadcast, terminal equipment and a storage medium, and belongs to the technical field of computer application and data processing, and the method comprises the steps: storing an allocation rule in a first memory map container; if the ringing scheme is marked to be enabled, storing the ringing scheme in a second memory map container; if the ringing scheme is marked to be forbidden, storing the ringing scheme in a third memory map container; if the execution time of the ringing task in the second memory map container is in the starting time interval, storing the ringing task in a fourth memory map container; if the execution time of the ringing task in the third memory map container is in the forbidden time interval, storing the ringing task in a fifth memory map container; and performing data cleaning on the fourth memory map container, generating a control instruction, and issuing the control instruction to the campus broadcast terminal. Therefore, through the implementation of the invention, the suitability of the campus broadcast timing ringing task in a complex scene can be improved through intelligent and automatic scheduling.

To collect receiver data while securing confidentiality.SOLUTION: A digital television broadcasting system according to one embodiment includes: broadcast signal receiving means for receiving a broadcast signal; and an information storage unit for recording receiver data after encrypting the receiver data in a receiver using an encryption key on the basis of an API execution command included in the broadcast signal. A transmitter transmits the API execution command.SELECTED DRAWING: Figure 8

The invention provides a rural power failure emergency broadcast control method and device, and is applied to a system comprising a remote monitoring platform and a plurality of emergency broadcast terminals. The method comprises the steps that in response to a power failure event, the remote monitoring platform sends the emergency broadcast terminals to the remote monitoring platform according to fault information of a fault area corresponding to the power failure event; matching from a pre-stored broadcast strategy library to obtain a corresponding broadcast content template and a broadcast frequency parameter; the remote monitoring platform takes the fault information as a dynamic parameter and fills the matched broadcast content template with the fault information, and a text to be broadcasted is generated; the remote monitoring platform determines an affected target emergency broadcast terminal according to the fault position and issues an emergency broadcast instruction to the target emergency broadcast terminal, and in the broadcast process, if it is detected that the target emergency broadcast terminal has an original broadcast signal through an audio monitoring circuit, the target emergency broadcast terminal sends the emergency broadcast instruction to the remote monitoring platform; if yes, the emergency broadcast is paused and recovered after the original broadcast is finished. According to the technical scheme of the invention, automatic control of rural emergency broadcast in a power failure scene is realized.

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 discloses a high-gain directional broadcasting device for an expressway and an installation method thereof, and relates to the technical field of communication, the high-gain directional broadcasting device comprises a high-gain directional broadcasting unit and a central management and control platform, and the high-gain directional broadcasting unit and the central management and control platform are integrated through acoustic beam forming, environmental perception and vehicle detection and high-performance digital signal processing and control. Accurate wave beam forming, real-time environment self-adaption and target vehicle directional transmission of sound waves are achieved. The method comprises the steps of field survey layout, installation height and initial angle optimization, system integration debugging, network communication and adaptive operation optimization. Through adoption of the above scheme, accurate sound wave release can be realized, the broadcast definition and intelligibility are remarkably improved, the energy consumption and the operation and maintenance cost are effectively reduced, and the system reliability is improved.

The invention provides a high-precision synchronous fire-fighting emergency broadcasting system and method with state feedback, relates to the field of fire-fighting emergency broadcasting, and solves the technical problems that a traditional fire-fighting emergency broadcasting system is low in time synchronization precision, unknowable in playing state and unverifiable in integrity. The method comprises the following steps: acquiring a plurality of timestamps of a time synchronization message, and analyzing a clock delay amount; analyzing the current temperature compensation clock drift amount of each broadcast terminal; analyzing the clock correction amount of each broadcast terminal based on the clock delay amount and the temperature compensation clock drift amount, and correcting the clock of each broadcast terminal based on the clock correction amount; and constructing an original audio fingerprint sequence and a return audio fingerprint sequence, and analyzing the playing integrity of each broadcast terminal. The application is used in a fire-fighting emergency broadcast process.

The invention relates to a method for receiver-side normalization of audio levels of audio data streams from different transmitters wirelessly transmitted to a user vehicle (1), wherein at least one receiver vehicle (3): i) analyzes a plurality of audio data streams from different transmitters for their respective levels defined in each of the audio data streams, and determines deviations of these defined levels from one another, and / or ii) detects a reaction to a change in a predetermined volume level of an occupant within a predetermined time period after switching to another transmitter in the at least one receiver vehicle (3), and determines compensation values ​​based on i) and / or ii) and assigns them to a respective transmitter and stores them in a database.and wherein, using the compensation values ​​of the database in the user vehicle (1), a level of an audio data stream is adjusted by assigning its transmitter to the corresponding compensation value.

To collect receiver data while securing confidentiality.SOLUTION: A digital television broadcast system according to an embodiment includes a broadcast signal receiver configured to receive a broadcast signal, an encryption key obtainer configured to obtain an encryption key from the broadcast signal, an encryptor configured to encrypt receiver data in the receiver using the encryption key based on a write command included in the broadcast signal to generate encrypted data, and an information writer configured to write the encrypted data into an information storage.SELECTED DRAWING: Figure 8

The application discloses an information credible broadcasting method, system and equipment for an emergency broadcasting and communication dispatching management platform. The method comprises the following steps: obtaining service meta information of a current broadcasting task and performing standardized processing, and establishing a background database which can query the service meta information through a hash index; constructing a time-sharing watermark load combined with a unique identifier and a dynamic field, and embedding the time-sharing watermark load in audio according to a second level; embedding watermark data in host audio to generate broadcasting audio containing the watermark; performing platform-level digital signature on a broadcasting message and a control instruction to form a platform-level credible chain and perform broadcasting; performing signature verification on the broadcasting information by a receiving end; performing blind detection on the received audio by a detection end, and recovering the watermark information according to a second; performing joint detection and credible judgment on the recovered information to complete existence verification, session consistency judgment, structure integrity analysis and post-tracing. The application combines platform-level security and content-level security, and significantly improves the security and reliability of emergency broadcasting information broadcasting.

The invention relates to a remote control directional sound broadcasting method and system. The method comprises the steps of receiving a first digital audio signal and converting the first digital audio signal into a first analog audio signal; converting the second digital audio signal into a second analog audio signal, performing bass band enhancement processing, and performing tone quality improvement processing; processing the PWM waveform through an operational amplifier integrating circuit to form a triangular wave, taking the triangular wave as a carrier wave, taking the second analog audio as a modulation wave, and modulating and superposing the triangular wave and the modulation wave to obtain a PWM wave of which the duty ratio changes according to the analog audio signal; and modulating the PWM wave to an ultrasonic frequency to obtain a first ultrasonic modulation signal, performing power amplification processing to obtain a second ultrasonic modulation signal, driving the transducer array through LC low-pass filtering and impedance matching, and transmitting an ultrasonic carrier wave through the transducer array. According to the invention, the defect that the existing directional sound system is limited to local independent control is broken through, multicast transmission is carried out through the IP protocol, and remote networking and strategy control are realized.

A method of controlling operation of an end device using a one-way radio broadcast includes sending an encrypted message from a client application of a computing device to a first network server, sending the encrypted message from the first network server to a second server included with radio broadcast automation equipment, transmitting the encrypted message in a radio broadcast signal using one or more radio broadcast transmitters, receiving the radio broadcast signal at an end device, and decrypting the encrypted message using the end device. The encrypted message includes control information to control operation of the end device.

This invention discloses an application in a user terminal, an information processing method, and an information processing system. The method includes: receiving a broadcast signal from a broadcast channel, which contains identification information of the mobile platform and the frequency of an image transmission channel used by the mobile platform for transmitting images; displaying the identification information of at least one mobile platform; selecting a target mobile platform from the at least one mobile platform based on a detected first mobile platform selection operation by the user, and receiving an image transmitted by the target mobile platform from its image transmission channel; and displaying the received image. In this way, without verbal interaction, the user can choose to view images captured by a mobile platform of interest according to their personal preference.

A web-based or downloadable software and hardware system and method for their use, that act together to generate creative content, such as for broadcast media distribution and wherein that system can incorporate one or more selectable machine generated broadcast personalities, including interactive personalities, and ones that can have a conversation with each other. More specifically, the present invention relates to a fully integrated cloud-based broadcast system which has the ability to address and interact with external sources, including for example, news, music, sports, social media, advertising, and live audience participation. This broadcast personality can be customized to include selected attributes and can include the ability to react iteratively to content, including on-air and in real-time. Moreover, the system is designed to provide safety protocols which include audio fingerprinting which the system uses for authentication and verification of the audio files in an aspect of the invention.

The application provides a kind of intelligent ship broadcast and alarm system and method, system includes: distributed intelligent acoustic terminal network, fusion perception internet of things, central intelligent processing platform and immersive command console.Central intelligent processing platform contains digital twin ship model engine, intelligent alarm and broadcast strategy engine, adaptive broadcast optimization module and two-way communication and feedback analysis module.Through real-time acquisition of shipboard environmental noise, sensor alarm and personnel distribution data, fusion and visualization are carried out in the digital twin model;When receiving sensor alarm, intelligent strategy engine automatically generates broadcast strategy containing target area list and customized voice text;Adaptive broadcast optimization module calculates optimized audio parameters according to real-time environmental noise;Instructions are issued to intelligent terminal for accurate broadcasting;The system receives on-site personnel state feedback and updates the digital twin model in real time, significantly improving the accuracy, efficiency and intelligence level of ship emergency command.

The invention discloses an intelligent broadcasting method and system based on a ReAct decision framework and a medium, and the method comprises the steps: generating a task decision through a preset lightweight large model according to the environment data and hardware state data of broadcasting equipment, and feeding back the task decision to the broadcasting equipment to execute a broadcasting task; and based on a ReAct framework, iteratively adjusting the task decision according to the task execution result and the physical feedback data until a preset broadcast demand is met or a preset maximum cycle index is reached, obtaining a final task decision, and driving the broadcast equipment to execute the final task decision. According to the intelligent broadcasting method and system based on the ReAct decision framework and the medium provided by the invention, a decision optimization closed loop is constructed based on the ReAct framework, dynamic intelligent decision can be realized, and the decision can be adjusted in a targeted manner through unified adaptation and physical feedback of a hardware abstraction layer, so that the effectiveness of broadcasting can be ensured; the problems that an existing intelligent broadcasting system is high in broadcasting response delay, intelligent decisions are lacked, and hardware control adaptation is insufficient can be solved.

The invention relates to the technical field of emergency communication and intelligent broadcast control, and discloses a basement broadcast management method for emergency communication. According to the scheme, a basement is divided into sub-regions which are not overlapped with each other according to a building blueprint, coordinate numbers are unified, and an information table containing centers and areas is generated; two-way counting is arranged in each region, zero truncation of the number of people in the field is recursively carried out, and density is converted according to the area and normalized; giving danger scores according to functions and carrying out standardized registration; basic requirements are calculated according to density and danger, and events are superposed to trigger a complete requirement; summarizing the total amount, and respectively giving equal division, retention or on-demand normalization proportion at initial zero, continuous zero and non-zero; reading the total power and combining with the upper limit of a single region to execute amplitude limiting, set division and top freezing-remaining redistribution to convergence or scaling according to capacity; generating a voltage sequence according to the power and the load impedance and periodically and constantly outputting; data is periodically recorded and anomalies are identified by events and thresholds.

A broadcast network can use a pairing-based broadcast encryption scheme for N users with O(N 1 / 3) -sized parameters. A pairing-based ciphertext-policy attribute-based encryption (CP-ABE) scheme for the class of degree 3 polynomials can be implemented with compact parameters. The public key, ciphertext and secret keys comprise O(n) group elements, where n is input length for the function. The constructions achieve adaptive security against unbounded collusions, and rely on the (bilateral) k-Lin assumption in prime-order bilinear groups.

The present technology relates to an information processing apparatus, information processing method, transmission apparatus, and transmission method, capable of improving the convenience of a voice AI assistance service used in cooperation with content. The convenience of the voice AI assistance service used in cooperation with the content can be improved by providing an information processing apparatus including a control unit configured to control a timing of a voice response upon using a voice AI assistance service in cooperation with content on the basis of voice response time information indicating time suitable for the voice response to an utterance of a viewer watching the content. The present technology can be applied to a system in cooperation with a voice AI assistance service, for example.

To collect receiver data while securing confidentiality.SOLUTION: A digital television broadcast system according to an embodiment includes a broadcast signal receiver configured to receive a broadcast signal, an encryption key obtainer configured to obtain an encryption key from the broadcast signal, an encryptor configured to encrypt receiver data in the receiver using the encryption key based on a write command included in the broadcast signal to generate encrypted data, and an information writer configured to write the encrypted data into an information storage.SELECTED DRAWING: Figure 8

The invention relates to a method for communication between a server system (20) and a motor vehicle (40) via a digital radio transmitter (30). The method comprises the following steps: First, communication parameters are provided to the motor vehicle (40). Then, the server system (20) provides the communication parameters to the digital radio transmitter (30) via a communication unit (32) of the digital radio transmitter (30). The server system (20) also provides the communication content to be transmitted to the digital radio transmitter (30). A radio receiver (46) on the motor vehicle side is then configured according to the communication parameters. Finally, the digital radio transmitter (30) transmits the communication content to the motor vehicle (40) according to the communication parameters.

This invention discloses a method, apparatus, device, medium, and product for adaptive adjustment of broadcast volume. It includes: acquiring zoned sound signals and preprocessing the acquired sound signals to obtain zoned sound data; extracting features from the acquired zoned sound data, separating environmental noise and broadcast signals based on the extracted comprehensive features, and measuring the corresponding average sound pressure level of the separated environmental noise and broadcast signals; determining the corresponding optimal parameter strategy based on the acquired average sound pressure level, broadcast content type, and acquired environmental data using a reinforcement learning algorithm; and adjusting the broadcast parameters based on the optimal parameter strategy. This achieves adaptive adjustment of broadcast volume based on the optimal parameter strategy, ensuring a satisfactory listening experience for listeners in complex acoustic environments, ensuring optimal propagation of broadcast signals under different conditions, and guaranteeing listeners' access to key information.

To provide a digital broadcast receiver capable of performing functions with higher added value.SOLUTION: In a broadcast communication system, a broadcast receiving device 100 includes first and second receiving units with different transmission methods, an accumulation unit for received content, and an output unit for outputting the received content to an external apparatus. When the received content is protected so that it can be copied a predetermined multiple number of times, it is accumulated in a state where it can be copied nine times and moved once. When the accumulated received content is copied to the external apparatus, the content is protected using DTCP2, and when it is moved, a move processing function of DTCP2 is used.SELECTED DRAWING: Figure 8A

Broadcast networks have a bandwidth of O(N 1 / 3 A pairing-based broadcast encryption scheme for N users with parameters of size n can be used. A pairing-based ciphertext-prescribed attribute-based encryption (CP-ABE) scheme for a class of polynomials of degree 3 can be implemented with compact parameters. The public key, ciphertext, and private key contain O(n) group elements, where n is the input length of the function. This construction achieves adaptive security against unbounded collusion and relies on the (bilateral) k-Lin assumption on prime-order bilinear groups.