120results about "Broadcast observation/testing/troubleshooting" patented technology

The invention relates to an intelligent emergency broadcast safe broadcast monitoring controller, which belongs to the technical field of emergency broadcast monitoring and comprises an emergency broadcast scheduling platform and a broadcast time plan management module. The emergency broadcast scheduling platform comprises a data acquisition module, a broadcast scheme monitoring and analysis module, a real-time audio stream monitoring and analysis module and an intelligent visual monitoring terminal management module, and the emergency broadcast scheduling platform is connected with a visual intelligent monitoring and control terminal. According to the intelligent emergency broadcast safe broadcast monitoring controller, broadcast task data, audio stream metadata of the IP broadcast microphone and equipment operation logs are integrated through the data acquisition module to carry out multi-dimensional dynamic monitoring on broadcast tasks, and if a certain broadcast task is triggered in an abnormal time period and the audio stream contains unauthorized content, the broadcast task is not triggered in the abnormal time period. The system can mark time violation and content abnormity at the same time and accurately position composite risks, so that the abnormity identification accuracy can be effectively improved, and the false report and missing report rate can be reduced.

The invention discloses railway train dispatching four-wire access equipment and an implementation method. The device comprises a first network transformer, a second network transformer, an audio coding and decoding chip, a modular connector, a PHY chip and a processor chip. The equipment is connected with a plurality of 450M analog train dispatching station radio stations through four-wire interfaces, and is connected with a digital train dispatching communication system central server through an Ethernet interface, so that the traditional 450M analog train dispatching station radio stations can be accessed to a digital train dispatching communication system, and dispatching communication and network management monitoring of the digital train dispatching system and the 450M analog train dispatching station radio stations are realized; a technical means is provided for upgrading transition compatibility of a railway wireless train dispatching system, and the method has important significance for guaranteeing railway train operation safety and improving transportation operation efficiency.

A method for controlling a radio apparatus for a vehicle, includes: determining of scanning determining whether to scan alternative broadcasts based on a signal quality of a listening broadcast; scanning the alternative broadcasts; determining of noise determining noise types of the alternative broadcasts based on a plurality of polarizations; comparing and determining comparing signal qualities of the listening broadcast and the alternative broadcasts based on a determination result of the determining of noise and determining whether to switch the listening broadcast to one of the alternative broadcasts; and switching the listening broadcast to the alternative broadcast based on a determination result of the comparing and determining.

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

An embodiment control method for a radio device for a vehicle includes determining whether to scan alternative broadcasts based on a signal quality of a listening broadcast, wherein each of the alternative broadcasts has a same content as the listening broadcast and is a radio broadcast having a frequency or a polarization that is different from the frequency or the polarization of the listening broadcast, scanning the alternative broadcasts, comparing the signal quality of the listening broadcast with signal qualities of the alternative broadcasts to determine to switch the listening broadcast to a selected one of the alternative broadcasts, and in response to a determination to switch the listening broadcast to the selected alternative broadcast, switching the listening broadcast to the selected alternative broadcast.

The present invention discloses an abnormal self-detection method, system, device and medium for a PIS broadcast system. The method includes controlling the first speaker and microphone to work, and according to the first preset sound acquisition strategy, controlling the microphone to collect the first sound signal, and judging whether the first broadcast device is abnormal according to the first sound signal; when the first broadcast device is abnormal, performing abnormal positioning according to the detected first line current of the first broadcast device; when the first broadcast device is normal, judging whether the second broadcast device is abnormal according to the detected second line current; when an abnormality occurs, controlling the second speaker and microphone to work respectively, and according to the second preset sound acquisition strategy, controlling the microphone to collect the second sound signal, and performing abnormal positioning on the second broadcast device according to the second sound signal. The present invention can respectively realize the abnormal self-detection and abnormal positioning of two kinds of broadcast devices, with high reliability and helpful for subsequent maintenance.

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.

A method of verifying display of primary visual information on a screen of an electronic visual display device in which primary visual information is displayed on the screen of the display device. Visual verification information is simultaneously displayed at a verification location of the screen. The verification location is monitored using an optical detector to determine if the visual verification information is displayed. Display of the primary visual information is verified if it is determined that the verification information has been displayed.

The invention relates to the technical field of broadcasting, and discloses an abnormity monitoring and warning system based on DRM digital amplitude modulation broadcasting signals, which comprises a control main board, a delay warning setting board, an audio amplitude display board, a tuning screen board and a power supply module, the control main board adopts a main control chip of a high-performance single-chip microcomputer for logic control; the delay alarm setting board is composed of a TM1637 LED drive control special circuit, an LED nixie tube and four function keys. The audio amplitude display panel monitors the audio amplitudes of the signal source signal and the tuning signal in real time through two independent signal processing channels; the tuning screen board comprises a high-precision display unit and a multifunctional control panel. The DRM digital amplitude modulation broadcast audio signal can be received and demodulated without changing a broadcast link of an original transmitting station, whether the signal source audio of the transmitting station and the received audio signal break down or not is monitored and analyzed, the corresponding audible and visual alarm information is sent out when the fault occurs, and the manual inspection intensity is effectively reduced.

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.

The utility model discloses a broadcast transmission controller, which comprises: a main controller, a main identification module, a substitute identification module, a switch detection module and a switch control module; the main identification code output end of the main identification module is connected to the main identification code input end of the main controller, the enable output end of the main identification module is connected to the enable input end of the main controller, the output end of the switch detection module is connected to the first state input end of the main controller, the substitute identification code output end of the main controller is connected to the substitute identification code input end of the substitute identification module, and the control output end of the main controller is connected to the input end of the switch control module; the broadcast transmission controller of the utility model is helpful to realize a highly intelligent and highly automated backup transmission system through the connection and coordination among the main controller, the main identification module, the substitute identification module, the switch detection module and the switch control module, reduces the work intensity and improves the efficiency of the substitute broadcast failure frequency.

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.

Remote handling of signal integrity is described. Specifically, remote monitoring of audio and video signals for multiple broadcast channels is described. The goal of the described remote monitoring system is to be a single point solution for a broad range of monitoring needs for the customer. As a result, the solution described here can scale across a broad range of signals that needs to be monitored from any physical locations across the globe. The remote monitoring system comprises a plurality of probes, various backend servers and user interface for dedicated personnel to ensure compliance of signals with broadcast standards.

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 belongs to the technical field of signal monitoring, and provides a communication broadcast satellite uplink and downlink signal parallel monitoring method, which adopts a dual-channel receiver design, and receives an uplink transmitting signal and a downlink receiving signal of a communication broadcast satellite in parallel by the same equipment; by adopting the design of the dual-channel receiver, the uplink transmitting signal and the downlink receiving signal of the communication broadcast satellite are received by the same equipment in parallel, so that the number of monitoring equipment is remarkably reduced, the investment demand, the occupied space and the energy cost are reduced, and meanwhile, the maintenance pressure is also reduced.

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

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.

A method and system of verifying display of primary visual information on a screen of an electronic visual display device. Primary visual information is combined with visual verification information to create combined primary and verification visual information in a computer-usable format. The combined primary and verification visual information is rendered on the screen of the visual display device. The screen is monitored using an optical detector to detect display of the visual verification information on the screen thereby verifying display of the primary visual information. Preferably, wherein said combining involves creating a computer file containing data representing said combined primary and verification visual information. Preferably the data is rendered on the screen a media player. Preferably, said rendering involves rendering said primary visual information using a visual media editor. The invention relates to verifying that adverts have been displayed on an electronic display as scheduled. Preferably quality of the visual information is assessed based on a comparison of a measured visual characteristic with a corresponding desired visual characteristic. The visual characteristic may be one or more of illuminance, luminance, brightness and / or colour.

The utility model discloses a medium wave transmission system. The system includes a main transmitter, a first backup transmitter, a second backup transmitter, a first coaxial switch, a first controller, a second coaxial switch, a second controller, a first load, a second load, an antenna feed network and an antenna; wherein the main transmitter is connected to the first coaxial switch, the first backup transmitter and the first load are connected to the first coaxial switch; the second backup transmitter and the second load are connected to the second coaxial switch; the first coaxial switch and the second coaxial switch are connected; the second coaxial switch is connected to the antenna feed network, and the antenna feed network is connected to the antenna; the first coaxial switch is connected to the first controller, and the second coaxial switch is connected to the second controller. Through the above technical solution, in the case of failure of the main transmitter and the first backup transmitter, the second backup transmitter can be enabled to shorten the off-air time and ensure the stability of safe broadcasting.

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.

To assist in identifying a cause when a video is not played back normally.SOLUTION: A video routing device according to an embodiment includes an input / output interface that inputs a video stream from the outside or outputs the video stream to the outside, an analysis unit configured to analyze whether there is an error in syntax regarding the video stream input or output by the input / output interface, and a notification unit configured to notify a predetermined notification destination of the input / output interface that inputs or outputs a video stream having an error in the syntax when there is a video stream with an error in the syntax as a result of the analysis by the analysis unit.SELECTED DRAWING: Figure 1

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 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 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.

The invention relates to the technical field of broadcasting systems, in particular to an FM and IP combined intelligent self-checking campus foreign language listening examination broadcasting system. The system comprises an FM and IP main control module, a plurality of branch control modules, a TCP / IP network module and a classroom module, wherein each module comprises a plurality of units. Wherein the FM detection radio unit is used for carrying out radio test on test signals sent by the FM and IP main control module; the IP sound box is used for playing IP broadcast voice; and the detection pickup unit is used for acquiring feedback sounds of FM and IP broadcasts by virtue of a pickup head for detection. According to the system, through combined use of FM and IP broadcast, mutual complementation and mutual backup of a wireless technology and a wired technology are realized, and the requirement that an education management department must configure an emergency standby system for a hearing test can be better met; meanwhile, FM and IP broadcasts can be monitored in real time, monitored audios are intelligently analyzed, the final sound quality is accurately judged, and the monitoring efficiency is greatly improved.