33results about "Broadcast observation/testing/troubleshooting" 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.

Ingress cancellation may be provided. A computing device may determine an Over-the-Air (OTA) signal. Next, the computing device may create a composite cancelation signal based on the OTA signal. The composite cancelation signal may be configured to cancel ingress noise created by the OTA signal. Then the computing device may combine the composite cancelation signal with a real-time upstream signal.

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 utility model discloses a radio and television monitoring all-in-one machine which comprises an audio board, a video board and a power supply module. Wherein the audio board is provided with a main control CPU, an FM / AM receiving monitoring module and a communication and positioning navigation module; the video board is provided with a decoding monitoring module, an IP code stream processing module, a communication interface module and a gigabit switching module. The radio and television monitoring circuit adopts a modular design and comprises an audio card and a video card, and the function of the radio and television monitoring all-in-one machine can be achieved by directly accessing the video card on the basis of the audio card. An original system which is divided into a main control board, a monitoring board and a transcoding board is integrated into two boards which can be disassembled and assembled, different functions are achieved, cost is greatly saved, and the resource utilization rate is improved.

To provide a technique for more preferably transmitting or receiving an advanced digital broadcasting service.SOLUTION: In a display control method in a broadcast receiving device that can receive a broadcast wave that are simulcast between a 4K broadcast service and a 2K broadcast service via a broadcast transmission line, the 4K broadcast service included in the broadcast wave is received, demodulated, a broadcast program of the 4K broadcast service is displayed, the 2K broadcast service which is a simulcast of the 4K broadcast service is received and demodulated when emergency broadcast information is received while a broadcast program of the 4K broadcast service is being displayed, the display screen of the broadcast receiving device is forcibly switched from the display of the broadcast program of the 4K broadcast service to the display of the screen of an emergency broadcast transmitted by the 2K broadcast service.SELECTED DRAWING: Figure 1

The invention discloses a self-starter for a frequency modulation broadcasting standby transmitter and a control method of the self-starter. The self-starter comprises a frequency modulation signal receiving module, an acousto-optic conversion module, a light-operated module, a delay processor and an alternating current contactor; the frequency modulation signal receiving module receives a main transmitter signal through an antenna, the main transmitter signal is converted into an optical signal through the acousto-optic conversion module, the delay processor is triggered after the optical signal is detected by the optical control module, and the alternating current contactor is driven to be connected with a standby transmitter power supply after delay control. The control method comprises the steps of signal receiving and processing, photoelectric conversion, delay judgment and power supply starting, full-automatic and quick starting of the standby transmitter when the signal of the main transmitter is interrupted is achieved, and manual testing, starting, stopping and adjusting can be achieved. The method has the characteristics of quick response, strong anti-interference and flexible operation, and can obviously shorten the broadcast stop time and improve the system reliability.

The utility model discloses a frequency modulation frequency band digital audio broadcast monitoring device which comprises an antenna, an FM tuning decoding module, a CDR digital audio decoding module, an audio switching module, an FPGA processing unit, a single-chip microcomputer, a remote communication module, an audio power amplifier, a loudspeaker, a buzzer and an LED button module. The FM tuning decoding module and the CDR digital audio decoding module output audio signals, and the audio switching module selects channels under the control of the FPGA and outputs the audio signals to the power amplifier driving loudspeaker. The FPGA analyzes the input audio and detects interruption and mute faults; the single-chip microcomputer receives the fault signal to control the buzzer and the LED to give an alarm, and uploads fault information through the remote communication module. The device supports analog and digital broadcast monitoring switching, has the functions of fault detection, alarm and remote monitoring, and improves the intelligent management and safe broadcast guarantee capability of the broadcast transmitting station.

A radio apparatus for a vehicle and a control method thereof is provided. The radio apparatus and control method may provide an occupant of a vehicle, who cannot listen to an Internet radio, to be able to easily listen to radio broadcasts, even when a reception condition of an analog radio transmitted by a radio broadcasting station is poor. When a vehicle whose occupant can listen to the Internet radio is adjacent to a vehicle whose occupant cannot listen to the Internet radio, the Internet radio to which the vehicle whose occupant can listen, may be converted into an analog radio, and the analog radio is transmitted to the vehicle whose occupant cannot listen to the Internet radio by using one or moddre frequencies.

This utility model discloses a novel wireless transmitter source switching system, comprising a loop control module, a signal output module, a signal detection module, a working indicator module, and a signal input module. The signal output module, signal detection module, working indicator module, and signal input module are electrically connected to the loop control module. A power control module is electrically connected to each of the loop control module, signal output module, signal detection module, and working indicator module, and is powered by AC mains electricity. This utility model relates to the field of automatic source switching for wireless broadcast transmitters, specifically a novel wireless transmitter source switching system.

A provider equipment identification (ID) device includes a provider equipment with a plurality of output ports and an ID beacon device. The provider equipment is configured to perform a signal processing operation on an input signal and deliver an output signal to one or more of the output ports. The ID beacon device is coupled to the provider equipment. The ID beacon device is configured to output at least one pilot beacon signal which is receivable by each of the output ports to electrically excite each of the output ports such that the at least one pilot beacon signal is introduced in the output signal to generate an altered output signal capable of identifying the provider equipment.

The invention discloses a frequency modulation broadcast intelligent monitoring method based on deep learning, which relates to the technical field of broadcast monitoring, and comprises the following steps: setting a frequency modulation broadcast intelligent monitoring area, and carrying out broadcast spectrum acquisition in the set frequency modulation broadcast intelligent monitoring area; processing the acquired broadcast spectrum data in a data processing mode; after processing is completed, the processed broadcast spectrum data are analyzed through a data analysis method, meanwhile, spectrum classification is conducted on the analyzed broadcast spectrum data through a feature extraction algorithm, finally, the classified broadcast spectrum data are predicted through a model prediction method, and predicted broadcast spectrum data are obtained. Meanwhile, the illegal frequency in the frequency modulation broadcast is dynamically captured and forbidden according to the predicted broadcast spectrum data, so that the accuracy of intelligent monitoring of the frequency modulation broadcast is improved.

To suppress the lowering of the battery voltage of a plurality of slave stations arranged in the same area, and to extend the time when at least one slave station is turned to a broadcastable state in the area.SOLUTION: A broadcast instruction device (100) includes a storage unit (110) configured to store battery information transmitted from each of a plurality of slave stations arranged in the same area, a determination unit (120) configured to determine whether or not the battery information of each of the plurality of slave stations is equal to or less than a predetermined value, and a transmission unit (130) configured to transmit a broadcast instruction for preventing a slave station of which the battery information is equal to or less than the predetermined value among the plurality of slave stations from performing broadcasting.SELECTED DRAWING: Figure 1

This invention discloses a noise detection method. The method and readable storage medium include: digitizing the audio to be detected and normalizing it to form a time-domain audio vector; performing a Fast Fourier Transform on the time-domain audio vector data, adding each spectral vector to a queue, calculating the similarity index and power dispersion of the first spectral vector in the queue compared to other spectral vectors, and calculating a noise index; determining whether the noise index of the first spectral vector belongs to a noise range, and if so, identifying the audio corresponding to the first spectral vector as noise data. In this invention, based on the highly dispersed spectral distribution and temporal stability of noise, the similarity index and power dispersion are combined into a noise index that can distinguish noise from normal audio, thereby accurately identifying noise signals in broadcast signals.

To provide a rebroadcasting system capable of detecting a stop of rebroadcast audio in a non-interruption facility.SOLUTION: According to an embodiment, a rebroadcasting system includes a rebroadcasting device that receives broadcast radio waves and rebroadcasts the broadcast radio waves to a provision area, and a center device connected to the rebroadcasting device via a communication network. The rebroadcasting device includes a receiving unit, a retransmitting antenna, a disconnection detection unit, and a notification unit. The receiving unit receives the broadcast radio waves. The retransmitting antenna is installed in the provision area and rebroadcasts the broadcast radio waves received by the receiving unit. The disconnection detection unit detects a disconnection of the retransmitting antenna. When the disconnection detection unit detects a disconnection, the notification unit notifies the center device of the disconnection of the retransmitting antenna via the communication network.SELECTED DRAWING: Figure 2

To provide a display control method for more suitably receiving advanced digital broadcasting service.SOLUTION: In a display control method in a broadcast receiver capable of receiving a broadcast wave in which simultaneous broadcasting of a 4K broadcast service and a 2K broadcast service is performed via a broadcast transmission path and further capable of receiving IP simultaneous broadcasting of the 4K broadcast service via a communication transmission path, the broadcast receiver receives and demodulates the 4K broadcast service included in the broadcast wave and displays a broadcast program of the 4K broadcast service. When a failure occurs in receiving, demodulating, or displaying a 4K broadcast service, a first display switching process of receiving and demodulating a 4K broadcast service that is a simultaneous broadcast of a 2K broadcast service via a broadcast transmission path and displaying a broadcast program of the 2K broadcast service, and a second display switching process of receiving and demodulating an IP simultaneous broadcast that is a simultaneous broadcast of a 4K broadcast service via a communication transmission path and displaying a program of the IP simultaneous broadcast are selected and executed according to predetermined priorities.SELECTED DRAWING: Figure 16

A method for equalizing an audio frequency signal broadcast in a broadcasting environment. Such a method includes: estimating a frequency profile of a noise signal representing a background noise present in the broadcasting environment, based on, on the one hand, a signal captured by at least one microphone implemented in the broadcasting environment and, on the other hand, the audio frequency signal; determining a desired frequency profile for the broadcast audio frequency signal; determining an acoustic frequency mask representing, for each frequency component, a difference between the frequency profile of the noise signal and the desired frequency profile; and equalizing the audio frequency signal via a weighting of a spectrum of the audio frequency signal by applying a frequency weighting mask that is a function of the acoustic frequency mask, delivering the equalized audio frequency signal.

Ingress cancellation may be provided. A computing device may determine an Over-the-Air (OTA) signal. Next, the computing device may create a composite cancelation signal based on the OTA signal. The composite cancelation signal may be configured to cancel ingress noise created by the OTA signal. Then the computing device may combine the composite cancelation signal with a real-time upstream signal.

A control method of a vehicle radio device includes: confirming a broadcast name of an internet radio being listened; searching for a frequency at which a first analog radio having the broadcast name is being transmitted; determining whether the signal quality of the first analog radio received at the frequency is good; when it is determined that the signal quality of the first analog radio is poor, determining whether the Internet radio and the first analog radio are the same broadcast; and when it is determined that the Internet radio and the first analog radio are the same broadcast, converting the Internet radio into a second analog radio, and transmitting the second analog radio.

The invention relates to apparatus provided for the reception and transmission of data signals at one or more user locations. The data signals are received from and transmitted to remote locations typically via a satellite or cell phone transmission system. The operating condition of the apparatus at the user location selectively adaptable such as to take into account the particular format in which the data signals are received or are to be transmitted to thereby allow the apparatus to be used in different locations and adapted for use at the time of installation or at a time after installation with no, or minimal, intervention or skilled technical personnel attendance being required at the user location to allow the operation of the apparatus to be adapted.

The invention discloses an audio broadcast playing method, system and device and a readable storage medium, and relates to the technical field of communication broadcast. The method comprises the following steps: respectively acquiring an initial digital broadcast signal and an initial frequency modulation broadcast signal; performing parallel decoding on the initial digital broadcast signal and the initial frequency modulation broadcast signal to obtain a first broadcast signal corresponding to the decoded initial digital broadcast signal and a second broadcast signal corresponding to the decoded initial frequency modulation broadcast signal; and switching and playing the first broadcast signal and the second broadcast signal based on a preset quality standard. In this way, digital broadcast signal and frequency modulation broadcast signal programs can be obtained simultaneously through a single terminal device, and inconvenience in carrying and operation is avoided; through parallel decoding and seamless switching playing of the digital broadcast signal and the frequency modulation broadcast signal, listening continuity is improved.

The invention provides a radio device for a vehicle and a control method thereof. The radio device and the control method thereof can enable a vehicle occupant who cannot listen to an internet radio station to listen to broadcast content conveniently even if the analog radio reception condition transmitted by a broadcast station is poor. When a vehicle in which an occupant can listen to a network radio is adjacent to a vehicle in which an occupant cannot listen to the network radio, the network radio received by the vehicle in which the occupant can listen to the network radio can be converted into analog radio and transmitted to the vehicle in which the occupant cannot listen to the network radio through one or more frequencies.

The utility model discloses a broadcast monitoring circuit and a broadcast monitoring all-in-one machine. The broadcast monitoring circuit comprises a master control CPU, a power supply module, an FM / AM receiving and monitoring module, and a communication and positioning navigation module. Wherein the power supply module comprises an AC-DC conversion unit, a lithium battery and a power management unit; the FM / AM receiving and monitoring module comprises a plurality of FM / AM receiving chips and is used for sending the received stereo audio to the main control CPU for processing; the communication and positioning navigation module is used for sending a remote monitoring control signal to the main control CPU and sending the working state information of the broadcast monitoring circuit to a remote monitoring system; the positioning navigation module obtains positioning and clock information; and the gigabit exchange module is used for processing the communication data. The broadcast monitoring circuit adopts a modular design, each power signal is provided with an interface, and the broadcast monitoring circuit can be used after being configured through a connector or a direct wire according to needs, so that the cost is saved, and the resource utilization rate is improved.

A method of testing video streaming and apparatus for the same is shown and described. The method of testing video streaming capabilities of a video streaming device includes streaming a predetermined content to via a video streaming device. Where the predetermined content is a 7 / 8 color bar display. Capturing the streamed content. comparing the streamed content to predetermined expected results of the stream capture. Determining if the capture matches the expected results by comparing step compares each color bar in the capture to the color bar of the stream to determine streaming capabilities.

The present invention suppresses a drop in battery voltage of a plurality of slave stations arranged in the same area, thereby extending the time during which at least one slave station in the area is in a state where it can broadcast. [Solution] The broadcast instruction device (100) comprises a memory unit (110) that stores battery information transmitted from each of a plurality of slave stations located in the same area, a judgment unit (120) that judges whether the battery information of each of the plurality of slave stations is below a predetermined value, and a transmission unit (130) that transmits a broadcast instruction to a slave station among the plurality of slave stations whose battery information is below the predetermined value not to broadcast.

The present invention provides a video comparison and monitoring device that can restore synchronization and perform video comparison and monitoring even when synchronization is lost between the active system and the backup system. [Solution] The video comparison monitoring device 10 includes a delay unit 11 that sequentially stores and outputs the video signal of the active system, a delay unit 12 that sequentially stores and outputs the video signal of the backup system, a difference evaluation value calculation unit 13 that calculates the difference evaluation value at the pixel level between the active system frame and the backup system frame, a fault detection unit 14 that detects faults from the distribution of occurrence of difference evaluation values ​​and detects a synchronization outage when the duration of the fault has elapsed to a predetermined time length, and a synchronization control unit 15 that synchronizes the active system frame and the backup system frame when a synchronization outage is detected.

The invention discloses a short-wave broadcast coverage simulation method based on a short-wave analysis technology, and relates to the technical field of short-wave broadcast, and the method comprises the steps: defining a target geographic region, a target time period and transmitting system parameters based on a test demand; acquiring short-wave propagation environment data of the target geographic area in the target time period; constructing a time-varying probabilistic propagation environment field based on the short-wave propagation environment data; generating a space-time coverage probability data volume based on the probabilistic propagation environment field; performing dynamic region division and tracking on the space-time coverage probability data body based on a preset reliability threshold value to obtain an evolution sequence, and identifying a key event in an evolution process; generating a dynamic frequency switching strategy and a transmitting parameter adjusting strategy based on the evolution sequence; a simulation result is displayed based on the interactive visual decision-making interface; according to the method, through probabilistic simulation and dynamic evolution analysis, the accuracy of short-wave broadcast coverage simulation and the intelligent level of operation and maintenance are effectively improved.

A control method of a vehicle radio apparatus includes: confirming a broadcast name of an Internet radio being listened to; searching a frequency at which a first analog radio having the broadcast name is being transmitted; determining whether a signal quality of the first analog radio received at the frequency is good; determining whether the Internet radio and the first analog radio are the same broadcast when it is determined that the signal quality of the first analog radio is not good; and converting the Internet radio into a second analog radio and transmitting the second analog radio when it is determined that the Internet radio and the first analog radio are the same broadcast.

To switch a broadcast signal in proper switching unit with respect to an output transmission method in the time of abnormality detection.SOLUTION: Format conversion units 251, 252 convert one frame designated with reference time information included in a broadcast signal into a plurality of output transmission frames with a frame configuration according to an output transmission method, and add the reference time information included in the broadcast signal as individual time information to the plurality of output transmission frames. A read-out unit 281 specifies and selects a slot in another broadcast signal in the plurality of broadcast signals corresponding to a slot where an abnormality is detected on the basis of an offset amount to the slot where the abnormality is detected from the individual time information of the output transmission frame including the slot where the abnormality is detected when the abnormality is detected in any of the plurality of slots in the broadcast signal being selected. An output unit 282 outputs the selected slot in a prescribed output transmission method.SELECTED DRAWING: Figure 2

A device may be configured to cause application based features corresponding to a service provided by a service provider to execute based on one or more determined user settings.

This invention relates to the field of emergency warning broadcasting technology, specifically an intelligent emergency warning broadcasting system, comprising: a data fusion module for receiving and parsing raw warning data streams to generate composite warning event objects; an impact range analysis module for spatially overlaying the object with a static geographic feature layer to dynamically identify target broadcasting units; a content generation module for matching templates based on event types and generating formatted warning text; an instruction scheduling module for allocating resources and generating broadcast instruction sets based on the real-time online status and channel load of the target broadcasting units; and an instruction execution module for issuing the instruction set to trigger emergency broadcasting. This system achieves accurate determination of the warning range based on real-time geospatial calculations and reliable instruction issuance adaptively based on network status, improving the accuracy and timeliness of warning delivery.