11results 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.

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

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.

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

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.

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.

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

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.