54results about "Broadcast systems control" patented technology

A transmission system includes encoding and modulation means for encoding and mapping a plurality of frames. Each frame encapsulates a set of information bits of the data traffic, and is associated with a first modulation order and a coding rate, to a plurality of frames of encoded and modulated symbols; physical layer framing means arranged for inserting synchronization symbols taken from a second modulation order into at least one frame of encoded and modulated symbols of said plurality, to obtain a plurality of physical layer frames. The transmission system has expansion means to replace, if the second modulation order is smaller than the first modulation order, at least a subset of the synchronization symbols inserted by the physical layer framing means by symbols from the same constellation as the modulated symbols in the frames of encoded and modulated symbols.

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.

To provide a broadcast receiver which can execute a further highly value-added function.SOLUTION: A broadcast receiver 40100 which can output data to an external apparatus includes: a receiver unit which receives a digital broadcast signal including a first data flow; a communication unit 121 which acquires a second data flow, associated with the first data flow, from a server device through a communication line; and a digital interface 40125 which can output data to the external apparatus through a cable having a plurality of transmission lines in the same cable. As data output control states by the digital interface, there are a first output control state which outputs only data included in the first data flow, and a second output control state which outputs data included in both of the first and the second data flow. In the second output control state, data included in the first and second data flows are output through different transmission lines among a plurality of transmission lines.SELECTED DRAWING: Figure 29A

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 relates to the technical field of medium-wave broadcast, and discloses a medium-wave broadcast audio signal intelligent switching output method, which comprises the following steps: S1, initializing configuration; s2, performing real-time detection; s3, intelligent switching is carried out; s4, alarming and logging in a grading manner; and S5, state backward reading and updating. According to the method and the system for intelligently switching and outputting the medium-wave broadcast audio signals, an AD9850 clock detection unit, an AD8232 and ADS1115 amplitude detection unit, an LM311 peak detection unit, an STM32F103 phase detection unit and an AD637 THD detection unit of a multi-parameter detection module are used for cooperatively detecting AES clock skew, signal amplitude, peak, left and right sound channel phase difference and total harmonic distortion; a power supply detection circuit composed of an LM339 comparator and a TL431 reference source is matched to monitor power supply voltage deviation, each unit is judged to be abnormal according to preset logic, key parameters which are not involved in the prior art are covered, judgment rules are clear, potential faults are comprehensively and accurately recognized, and missed judgment and misjudgment are avoided.

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 present invention relates to a transmission system arranged for generating data traffic to be transmitted. The transmission system comprises : - encoding and modulation means for encoding and mapping a plurality of frames whereby in each frame a set of information bits of the data traffic is encapsulated, each frame being associated with a first modulation order and a coding rate, to a plurality of frames of encoded and modulated symbols, - physical layer framing means arranged for inserting synchronization symbols taken from a second modulation order into at least one frame of encoded and modulated symbols of said plurality, so obtaining a plurality of physical layer frames. The transmission system is characterized by comprising expansion means to replace, if the second modulation order is smaller than the first modulation order, at least a subset of the synchronization symbols inserted by the physical layer framing means by symbols from the same constellation as the modulated symbols in the frames of encoded and modulated symbols.

The present invention relates to a transmission system arranged for generating data traffic to be transmitted in a satellite communication system. The transmission system comprises : - encoding and modulation means for encoding and mapping a plurality of baseband frames of information bits, each baseband frame associated with a modulation and coding type, to a plurality of frames of encoded and modulated symbols, - generator means to generate one or more values to determine a superframe length, - framing means arranged for inserting synchronization symbols and preambles into frames of the plurality of frames of encoded and modulated symbols, so obtaining a plurality of superframes, each preamble indicating the start of a superframe, - spreading means arranged to receive the plurality of superframes (or a version thereof), and to spread each symbol in the plurality of superframes with a spreading sequence to a chip sequence, so obtaining a plurality of spread superframes, wherein the generated one or more values determine for a current superframe a frame length different from the frame length of the preceding superframe.

A platform enables a user of a smart radio device to select a music channel for playback through a loudspeaker coupled to the smart radio device. The smart radio is configured for two-way communication and belongs to a group of smart radio devices associated with a facility. The platform sets parameter(s) for playback of music at the smart radio device in accordance with rule(s) that are implemented for the facility and cause the smart radio device to respond to an event detected at the smart radio device by performing an action. The event is based on a location of the smart radio device relative to a geofenced area of the facility or presence of a device, equipment, or machine in a threshold vicinity of the smart radio device. The action can include modifying value(s) of the parameter(s) of playback of music.

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 present application relates to a public broadcasting method, system, intelligent terminal and storage medium, belonging to the field of broadcasting, wherein the method comprises obtaining a data packet to be played; selecting a preset playback mode based on the data packet to be played; obtaining object identification information when the playback mode is an object mode; obtaining monitoring data containing the object identification information based on the object identification information and monitoring data, and marking the corresponding monitoring data as valid monitoring data; obtaining the device position of the corresponding monitoring device based on the valid monitoring data, and marking the corresponding device position as the target device position; transmitting the data packet to be played to a broadcast module whose broadcast range covers the target device position, so that the corresponding broadcast module plays the data packet to be played. The present application has the effect of facilitating the improvement of the intelligence and playback effect of public broadcasting.

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 invention provides a program playing method, system and device of a vehicle-mounted radio and a medium, and belongs to the technical field of radios, and the program playing method comprises the following steps: starting a second tuner to search a radio station in response to a radio station search request of a user side received in the process of playing a first program by a first tuner; and keeping the first tuner to play the first program in the radio station searching process of the second tuner. According to the invention, the listening of the program is not interrupted when the user searches the radio station, and the listening experience of the vehicle-mounted digital radio can be effectively prevented from being reduced due to long-time search waiting of the user.

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.

A transmission system includes encoding and modulation means for encoding and mapping a plurality of baseband frames of information bits, each baseband frame associated with a modulation and coding type, to a plurality of frames of encoded and modulated symbols; generator means to generate one or more values to determine a superframe length; framing means arranged for inserting synchronization symbols and preambles into frames of the plurality of frames of encoded and modulated symbols, so obtaining a plurality of superframes, each preamble indicating the start of a superframe; spreading means arranged to receive the plurality of superframes (or a version thereof), and to spread each symbol in the plurality of superframes with a spreading sequence to a chip sequence, so obtaining a plurality of spread superframes. One or more values determine for a current superframe a frame length different from the frame length of the preceding superframe.

An audio device arrangement system (4) for sound diffusion technology, the audio device arrangement system having an audio signal processing device (5) and a configuration device (6), wherein the audio signal processing device (5) has a first number of multiple audio signal input terminals (10), a second number of multiple signal output terminals (11) and a third number of multiple signal paths (9), wherein the signal paths (9) connect the audio signal input terminals (10) with the signal output terminals (11), wherein the audio signal input terminals (10) are designed to receive a provided audio signal, wherein the configuration device (6) is designed to control, regulate and / or configure the audio signal processing device (5), characterized in that the configuration device (6) is designed to close, in particular, unused and / or undesired signal paths (9).

The invention provides a self-adaptive closed-loop control method and system for a passenger station group, and the method comprises the steps: a central control station receives the monitoring information of a plurality of passenger stations for executing a broadcast task and a guide task, recognizes the abnormal state of each passenger station, obtains an abnormality type, and selects an abnormality handling method from a plan library, the method comprises the following steps: determining exception handling content and priority thereof in the method to obtain a broadcast time period and a display time period required in the exception handling content, and determining availability of the broadcast time period and the display time period required according to a broadcast plan and a display plan fed back by a related station, and carrying out content consistency matching on the generated broadcast instruction and the generated guide instruction to generate a target instruction packet, receiving a plurality of effect evaluation indexes fed back by a related station, calculating a collaborative efficiency value, comparing the collaborative efficiency value with a preset threshold value, and then selecting to continue to execute the target instruction packet or adjusting an exception handling method in a plan library and updating the target instruction packet. And a self-adaptive closed-loop control process is formed to realize cross-station cooperative linkage operation of a broadcast task and a guide task.

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.

Devices, systems, and computer-implemented methods for subscription management are provided. An example method includes receiving user information and identifying a plurality of subscriptions and a corresponding plurality of subscribed service provider based on the user information. Each one of the plurality subscriptions is established between the user and the corresponding subscribed service providers. The method further includes obtaining authentication data associated with each one of the plurality of subscribed service provider, obtaining subscription data including subscription cost of each one of the identified subscriptions, presenting simultaneously the subscription data of the identified subscriptions to the user through a user interface of the subscription hub, and linking each one of the plurality of subscribed service providers to the subscription hub.

To provide a digital broadcasting receiver which can execute a function with a higher additional value.SOLUTION: A broadcasting receiving device for receiving content includes: a reception unit for receiving content; an interface for outputting the received content; and a control unit for controlling an output state of the content. The control unit determines the output state of the content according to a combination of control information which shows a copy control state of the content, control information which specifies necessity of protection of the content when the content is output, information which shows resolution of a picture of the content, and information which shows transmission characteristics of the picture of the content, all the information being received with the content by the reception unit. When the control information which shows the copy control state of the content shows presence of copy limitations or when the control information which specifies the necessity of protection of the content when the content is output shows protection at the time of output, the control unit applies output protection on the content.SELECTED DRAWING: Figure 7A

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.