59results about "Broadcast observation/testing/troubleshooting" patented technology

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

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.

The invention relates to a data acquisition method and device for radio station signals. The method comprises the following steps: acquiring serial port data corresponding to a test site, and determining a position parameter based on the serial port data; and acquiring radio station signals corresponding to the test site under each search frequency, and determining signal parameters based on the radio station signals corresponding to each search frequency. And storing the positioning parameters and the signal parameters according to a specified format. Through the mode, different test sites can be effectively distinguished based on the position parameters, and the signal parameters representing the signal state are determined based on the radio station signal, so that a tester visually knows the change rule of the radio station signal state, and the overall calibration efficiency is improved; besides, the position parameters and the signal parameters are stored, so that the storage data size is prevented from being too large, the continuity and integrity of data storage can be guaranteed, and data support is provided for development of radio calibration and subjective evaluation work.

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.

Various devices and techniques help to reduce the entry of unwanted radio waves into an enclosure and reduce the reflection of radio waves inside the enclosure. Such devices and techniques enable a test environment inside the enclosure that provides high-quality functionality and performance testing.

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.

Techniques are described that extend and / or improve the Advanced Television Systems Committee (ATSC) 3.0 television protocol in reliably delivering next-generation broadcast television services, where a receiver selects which frequency to tune to by considering not only the signal strengths and error rates of two frequencies carrying the same service, but also the relative location and direction of movement of the receiver with respect to each broadcast station, as well as parameters of the RF environment previously measured by an autonomous vehicle, such as a drone, in order to automatically switch from presenting the service on a first frequency to a second frequency, such as when a mobile receiver is moving through a boundary area between two broadcast stations.

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.

The invention discloses a radio stop sensitivity test method, device and equipment, and the method comprises the steps: receiving a test instruction, transmitting an initialization instruction to a vehicle terminal, and transmitting an initial transmission instruction to a signal generator; judging the program signal according to the test instruction to obtain a stop judgment result, and performing accumulation judgment on the stop judgment result according to a frequency judgment rule to obtain a frequency judgment result; if the frequency judgment result is met, obtaining a sensitivity test value corresponding to the current stop state as a test result; and if the frequency judgment result is not met, judging whether a signal strength adjustment condition is met, if the signal strength adjustment condition is met, sending a signal strength adjustment instruction to the signal generator and carrying out stop judgment again, and if the signal strength adjustment condition is not met, directly carrying out stop judgment again. According to the radio stop sensitivity test method, the signal strength of the radio signal can be automatically adjusted based on corresponding judgment, and the stop test result can be accurately and efficiently obtained.

The invention provides a frequency modulation broadcast signal monitoring system, which comprises a modulation domain anomaly detection module, a modulation distortion identification unit based on deep learning, an FM signal modulation index deviation analysis module, an output anomaly type and a confidence coefficient in real time; the distributed sensing network is a three-layer monitoring node composed of a miniature repeater in a tunnel, a vehicle-mounted mobile monitoring terminal and a fixed base station, and networking is carried out through a LoRaWAN protocol; the multi-source data fusion engine is used for correlation analysis of modulation domain data, spatial position data and environmental electromagnetic data; through three innovations of modulation domain depth analysis, distributed passive sensing and multi-source data collaboration, the bottleneck of a traditional monitoring technology is thoroughly broken through, global real-time guarantee is provided for broadcast signal safety, modulation domain analysis is improved, the modulation distortion recognition accuracy is improved, faults are early warned in advance, a distributed network eliminates monitoring blind spots of shielding areas such as tunnels, and the safety of broadcast signals is improved. The emergency response time is shortened, the interference source three-dimensional positioning is realized through multi-source data fusion, the positioning error is small, and the troubleshooting efficiency is improved.

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.

A digital signal processing (DSP) circuit of a system for blending audio signals executes a trained machine learning model to extract audio parameters associated with audio blocks of two received audio signals and generates audio quality scores. Each audio quality score indicates an audio quality of the audio block. Upon analyzing the corresponding audio quality scores of the two audio signals, the DSP circuit outputs an audio block of one of the audio signals based on a previous blended block or blends one of the audio blocks of the two audio signals to output a blended block that includes a composition of the corresponding audio blocks of the two audio signals. The system thus outputs an audio output signal that includes such audio blocks that are associated with at least one of the two audio signals.

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.

To suppress a drop in the battery voltage of a plurality of slave stations located in the same area, and to extend the time during which at least one slave station is in the state of being able to broadcast in the area.SOLUTION: A broadcast instruction device (100) includes a storage unit (110) that stores battery information transmitted from each of a plurality of slave stations located in the same area, a determination unit (120) that determines whether the battery information of each of the plurality of slave stations is less than or equal to a predetermined value, and a transmitting unit (130) that transmits a broadcast instruction to prevent slave stations whose battery information is less than or equal to the predetermined value among the plurality of slave stations from broadcasting.SELECTED DRAWING: Figure 1

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.

To evaluate the audio quality of radio broadcasts and appropriately switch radio audio in a radio device, such as an in-vehicle radio device.SOLUTION: A radio device includes: a receiving unit that receives digital radio signals which are radio signals of digital radio broadcasts, analog radio signals which are radio signals of analog radio broadcasts, and IP radio signals which are radio signals of IP radio broadcasts, which are simultaneously broadcasted; an evaluation unit that evaluates the sound quality of the analog radio audio using the digital radio audio based on the digital radio signals and the analog radio audio based on the analog radio signals; and a switch unit that switches the audio output of the digital radio audio to either the analog radio audio or the IP radio audio based in the IP radio signals, on the basis of the sound quality evaluation.SELECTED DRAWING: Figure 1

The utility model relates to the field of power amplifier equipment, in particular to four-way networked digital power amplifier broadcasting equipment, a plurality of modules are integrated in a 2U case to form an integrated structure, and each module comprises an input module used for receiving an input signal; the power amplifier module is used for amplifying the decoded signal; the backup module is used for outputting 100V constant-voltage backup broadcast signals; the input end of the network decoding module is connected with the input module, the output end of the network decoding module is connected with the power amplifier module and the backup module, and the network decoding module is used for decoding signals, judging whether the network state is normal or not, enabling the network decoding module to output decoded signals to the power amplifier module when the network state is normal, and outputting the decoded signals to the backup module when the network state is normal. And when the network state is off, the decoding module is switched to output the decoded signal to the backup module. According to the equipment, the cost can be reduced, the installation process is simplified, and the reliability of broadcast equipment is improved.

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.

There is provided fiber-coaxial amplifier device (10) comprising at least one output (14) and a test point (26) associated with the at least one output (14), wherein alternative first and second electrical paths (36, 38) are connectable to the at least one output (14), the first path (36) connectable to the at least one output (14) whilst bypassing the test point, the second path (38) connectable to both the at least one output (14) and the test point (26), and a relay (30) operable to connect one of the first path or the second path to the at least one output (14). The fiber-coaxial amplifier device (10) is configured for signals complying with Extended Spectrum DOCSIS.

The invention provides a DAB link optimization method, device and equipment, and the method comprises the steps: scanning all audio broadcasting frequencies according to the identification coding information of a current radio station when monitoring that a radio station list is updated, and obtaining candidate radio stations; after the candidate radio stations are stored in a preset audio buffer area, whether the coding formats of the candidate radio stations are target coding formats or not is judged; if not, performing code conversion on the candidate radio station according to a target coding format to obtain a first preprocessed radio station; performing timestamp alignment on the current audio stream and the candidate audio stream to obtain a second preprocessed radio station; and when monitoring that the broadcast signal parameter of the current radio station is sharply degraded, immediately starting the second preprocessed radio station. According to the method, candidate radio stations are scanned and screened in advance, and preprocessing of code conversion and timestamp alignment is completed; and when the broadcast signal parameters are sharply degraded, the radio station realizes rapid switching after the second preprocessing is immediately started, so that auditory interruption can be eliminated, and the switching reliability 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.