152results 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.

To provide a display control method of appropriately receiving a high-digital broadcast service.SOLUTION: In a display control method in a broadcasting reception device that can receive a broadcast wave that a simultaneous broadcasting with a 4K broadcasting service and a 2K broadcasting service is performed via a broadcasting transmission path, and can receive an IP simultaneous broadcasting of the 4K broadcasting service via a communication transmission path, the broadcasting reception device receives and demodulates the 4K broadcasting service contained in the broadcast wave, and displays a broadcast program of the 4K broadcasting service. In the case where a failure occurs in the reception and demodulation of the 4K broadcasting service or the display, the broadcasting reception device selects a first display switching processing for receiving and demodulating the 2K broadcasting service as a simultaneous broadcasting of the 4K broadcasting service via the broadcasting transmission path, and displaying the broadcasting program of the 2K broadcasting service or a second display switching processing for receiving and demodulating the IP simultaneous broadcasting via the communication transmission path as a simultaneous broadcasting of the 4K broadcasting service, and displaying a program of the IP simultaneous broadcasting in accordance with a predetermined priority level, and executes them.SELECTED DRAWING: Figure 16

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 comprises: receiving a first audio stream that conveys audio content and a second audio stream that conveys the audio content and is delayed relative to the first audio stream by a time delay; one-sided filtering first audio segments of the first audio stream to pass only positive frequencies of the first audio segments to first filtered audio segments; one-sided filtering second audio segments of the second audio stream to pass only positive frequencies of the second audio segments to second filtered audio segments; cross correlating the first filtered audio segments against corresponding ones of the second filtered audio segments, to produce cross-correlation results; detecting a peak indicated by the cross-correlation results; and estimating the time delay based on a position of the peak, to produce an estimated time delay.

The invention discloses a monitoring equipment distribution method and system for a medium-wave broadcast transmitter, and the method comprises the steps: obtaining a signal coverage area of the medium-wave broadcast transmitter, and determining a distribution line of monitoring equipment; and carrying out monitoring equipment preset distribution based on the signal coverage area of the medium-wave broadcast transmitter. According to the invention, monitoring equipment can be intuitively arranged in a coverage area by using a digital twinborn technology for a worker to understand and analyze, a medium-wave broadcast transmitter is used for transmitting a signal to analyze the signal intensity of a monitoring equipment distribution position, and when a monitoring value is 0, two conditions exist: one condition is that normal signal attenuation causes 0, and the other condition is that normal signal attenuation causes 0; according to the method, the area with shielding interference can be intelligently analyzed through data, shielding removal optimization is carried out on the area with shielding interference, arrangement by workers is more convenient, and the arrangement efficiency of point locations in real life is also improved.

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.

The invention provides a radio and television program monitoring method and device, computer equipment and a medium, and the method comprises the steps: responding to a program signal of a radio and television program received by each monitoring point; determining a target monitoring point where an abnormal condition occurs, the abnormal condition, and an abnormal broadcast television program where the abnormal condition occurs at the target monitoring point; determining an abnormal link node based on the target monitoring point, the abnormal condition and an abnormal broadcast television program of the abnormal condition at the target monitoring point; and determining a disposal mode for the abnormal link node based on the abnormal link node and the abnormal condition of the abnormal broadcast television program. According to the embodiment of the invention, the state change of the broadcast television program can be quickly responded, the abnormal state can be found at the first time, the solution can be given at the first time, and the efficiency of program signal monitoring and abnormal state handling operation 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 utility model discloses a broadcast frequency channel switching controller, which comprises a channel selection module, a main controller, a channel jump module and an output driving module, wherein the channel selection module is connected with the main controller and is used for coding a broadcast frequency channel to be switched; the main controller is used for transmitting the sequence switching signal to the channel jump module and receiving a channel jump signal generated by the channel jump module in response to the sequence switching signal; the channel jump module is respectively connected with the output end and the input end of the main controller; and the output driving module is connected with the main controller and is used for driving to output a broadcast frequency program corresponding to the target broadcast frequency channel after receiving the channel jump signal or the channel switching signal. According to the embodiment of the utility model, the automatic switching of the broadcast frequency programs is realized, the manual switching cost of the broadcast frequency programs is reduced, and the user experience is improved.

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.

The present invention belongs to the technical field of broadcast data backup management, and specifically relates to a broadcast data backup system and method. The network transmission quality is periodically detected in each time period divided into a single day, thereby classifying the time period into a backup suitability level. At the same time, the backup demand situation of the current broadcast data to be backed up is evaluated, so as to plan the backup time period of each broadcast data according to the evaluation result and the backup suitability level corresponding to each time period, thereby realizing the decentralized backup of the broadcast data in the time period and avoiding the limitation caused by the backup of the broadcast data concentrated in non-peak time periods. Then, in the backup time period of each broadcast data, the backup operation of the corresponding broadcast data is performed using the master and slave backup devices. Not only can the running status of the master and backup devices be detected in real time, but also the detection of the connection status between the master and slave backup devices is added, so that the abnormal connection between the master and slave devices can be identified in time, which is conducive to ensuring the normal backup of the broadcast data.

Methods, apparatus, systems, and articles of manufacture are disclosed to determine performance of audience measurement meters. An example apparatus disclosed herein is to cause an audio output device of a meter to emit an audio signal into an environment, the audio signal based on a test pattern including a first plurality of watermarks and cause an audio input device of the meter to collect data from the environment during emission of the audio signal. Additionally, the example apparatus is to determine whether a second plurality of watermarks decoded from the data match the first plurality of watermarks and based on a difference between the first plurality of watermarks and the second plurality of watermarks indicative of a fault, cause an alert to be transmitted to a device associated with an audience measurement company that issued the meter.

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.

To improve usability of a user when another electric work machine is operated in conjunction with an electric work machine.SOLUTION: A communication unit 30 configured to be mounted on an electric work machine 1 includes a communication section 31 and a communication control section 32. The communication section 31 performs wireless communication. The communication control section 32 transmits information through the communication section 31. The communication control section 32 has at least one transmission mode as an operation mode. The at least one transmission mode includes an operation transmission mode in which operation information indicating an operation state of a work machine element in the electric work machine 1 is periodically transmitted through the communication section 31.SELECTED DRAWING: Figure 2

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