63results about "Broadcast circuit arrangements" patented technology

The utility model discloses an emergency broadcast alarm device for a digital conversation ship, which comprises a protective shell and a loudspeaker, the right end of the top of the inner cavity of the protective shell is movably connected with a rotating shaft through a bearing, the middle end of the rotating shaft is fixedly provided with a second synchronizing wheel, and the bottom of the rotating shaft is fixedly connected with a protective cover. The outer surface of the protective cover is movably connected to the right end of the inner cavity of the protective shell. According to the utility model, through the arrangement of the loudspeaker, sailors can conveniently play the alarm information of the emergency broadcast when the digital communication ship encounters an emergency situation, so that surrounding sailors can timely discover the emergency situation and take corresponding safety measures; through the arrangement of a driving motor, a rotating rod, a first synchronous wheel, a fixing frame, a synchronous belt, a second synchronous wheel, a rotating shaft, a protective cover and a protective shell, the loudspeaker can be effectively stored and protected in the non-use period, and the probability that the loudspeaker is damaged due to the influence of the external environment is effectively reduced.

A radio data receiving device includes a memory, and a processor operatively connected to the memory, wherein the processor is configured to receive a zeroth stream based on a first frequency band about a radio data system (RDS), receive a first stream based on a second frequency band in which the RDS is extended, receive a second stream based on a third frequency band in which the RDS is extended, receive a third stream based on a fourth frequency band in which the RDS is extended, and provide a service about RDS data based on at least one of the first stream, the second stream, or the third stream.

A device control method and apparatus, an electronic device, and a computer-readable storage medium. The method comprises: if device interaction information is detected, determining first interaction feature information corresponding to the device interaction information (101); broadcasting the first interaction feature information to at least one interaction device within a communication range, and receiving second interaction feature information broadcast by each interaction device, wherein each piece of second interaction feature information is determined by each interaction device on the basis of the device interaction information, and at least one device among a current device and the interaction devices is an unprovisioned device (102); determining a device response result on the basis of the first interaction feature information and each piece of second interaction feature information (103); and controlling response of the current device to the device interaction information on the basis of the device response result (104). In this way, screening of response devices in a multi-device scenario is implemented, and the interaction experience is improved.

To reduce the possibility that the audio from the previous audio source will be output from the speaker when switching audio source data used for broadcasting and outputting it through the speaker. [Solution] The processing unit 1 comprises a communication unit 12 and a control unit 10. The communication unit 12 can communicate with a distributed processing unit 2 which comprises an output unit 23. The output unit 23 outputs an audio signal to speaker SP2 of a broadcasting equipment system S1 which has a speaker SP2 for broadcasting. The control unit 10 causes the communication unit 12 to transmit first information and second information to the distributed processing unit 2. The first information is information about the sound source data selected from among a plurality of sound source data as the audio signal to be output to speaker SP1. The second information is information about the switching timing of the sound source data to be used as the audio signal.

A radio data receiving device includes a memory, and a processor operatively connected to the memory, wherein the processor is configured to receive a zeroth stream based on a first frequency band about a radio data system (RDS), receive a first stream based on a second frequency band in which the RDS is extended, receive a second stream based on a third frequency band in which the RDS is extended, receive a third stream based on a fourth frequency band in which the RDS is extended, and provide a service about RDS data based on at least one of the first stream, the second stream, or the third stream.

The utility model relates to the field of electronic information discloses a public broadcasting device convenient to installation, including bottom plate and public broadcasting body, both sides of bottom plate all are fixedly connected with shell, the one side of two shell bottom is equipped with two strip grooves, the top of two shell inner wall is inserted with the plug -in block, two plug -in blocks are fixedly connected respectively in the both sides of public broadcasting body bottom, the inner wall of plug -in block is equipped with the slot, both sides of shell inner wall bottom all are connected with the clamping piece of sliding, the middle part of shell inner wall bottom is fixedly connected with fixed block, both sides of fixed block all are fixedly connected with spring no.

The communication method according to the present invention is developed for reducing energy consumption of the IoT terminals. The method comprises the process steps of recording and updating the orbital data of the satellite, periodically broadcasting a Beacon signal, determining the coverage area of the next Beacon signal, determining the next passage times of the satellite over the coverage area, determining the next passage of the satellite over the coverage area with an elevation angle above the threshold elevation angle value, transmitting a Beacon signal containing the detected passage data performed by the satellite and the process steps of receiving the Beacon signal, planning transitions between a low-power sleep mode and an awake mode using the passage data performed by the IoT terminals.

The utility model discloses a circuit used for frequency modulation broadcast newly-added service, and relates to the technical field of broadcast communication. The circuit comprises an interface module, a first FPGA module, a first ADC module, a second FPGA module and a signal output module. The interface module is used for acquiring new business data; the first FPGA is used for performing channel coding modulation processing on the new service data according to the channel characteristics of the new service data to obtain new service modulation data; the first ADC module is used for acquiring an original radio frequency signal and performing analog-to-digital conversion processing to obtain an original radio frequency digital signal; the second FPGA module is used for adding the new service modulation data to one side or two sides of a frequency modulation signal channel corresponding to the original radio frequency digital signal to obtain a first combined signal; and the signal output module is used for converting the first combined signal into a first radio frequency emission signal and outputting the first radio frequency emission signal. According to the utility model, the utilization efficiency of frequency resources can be improved, the demand for newly added frequency resources is reduced, and the problem of frequency resource shortage is relieved.

The invention discloses a communication device for terminal emergency broadcast, and relates to the technical field of communication, the scheme comprises a digital mainboard module, a configuration interface, an antenna interface and a communication interface, the digital mainboard module is connected with the communication interface, the configuration interface and the antenna interface; the configuration interface is used for receiving an emergency broadcast configuration message and transmitting the message to the digital mainboard module; the communication interface is used for receiving external access data and sending the external access data to the digital mainboard module; the digital mainboard module is used for processing the emergency broadcast configuration message, generating an emergency broadcast signal based on external access data and sending the emergency broadcast signal to the antenna interface; and the antenna interface is used for sending the emergency broadcast signal to a terminal. The method does not need to depend on existing network element upgrading of an operator, service broadcast time delay is reduced, rapid deployment in an emergency scene can be achieved, a large amount of manpower and material resources do not need to be consumed, and the requirement of the emergency scene is met.

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 broadcast prompt system which comprises a broadcast console, a networked power amplifier module, a broadcast loudspeaker and a wearable intelligent device. The broadcast console is used for sending audio signals, the network audio decoding module with the MCU chip generates superaudio signals when receiving the audio signals, the superaudio signals and the audio signals are mixed and output to the post-stage power amplifier module, and the post-stage power amplifier module amplifies the received signals and then sends the signals to the broadcast loudspeaker for playing. The pickup microphone of the wearable intelligent device carries out pickup on environmental audio, and when superaudio signals are detected to exist in the environment, the controller controls the vibration module to vibrate, so that broadcast alarm prompt is carried out on personnel in a tactile mode, dependence on the vision of the personnel is not needed, and the working efficiency is improved. The defect that the mode of receiving the alarm prompt depending on vision is limited by the installation position of the indicator lamp is avoided, and the technical problem that broadcast alarm prompt equipment adopted in an existing broadcast system is not high in reliability is solved.

Method and system for conveying a plurality of component signals transmitted from a multi-waveform transmitter to a ground hub having or coupled to an equal plurality of receivers as a combined signal in a common frequency band. For each of the component signals respective adjusted signals are generated by adjusting at least one inherent characteristic of the respective component signals based on waveform-specific constraints so as to allow discrimination of the adjusted signals by a respective one of the receivers based solely on the at least one inherent characteristic without requiring additional signal information and without requiring encoding of the component signals by the transmitter. The adjusted signals are combined in a common frequency band to form a combined signal. and transmitted to the ground hub.

The utility model discloses a main transmitting station, a broadcast-on-behalf transmitting station and an automatic broadcast-on-behalf frequency modulation transmitting system. The main transmitting station at least comprises at least one main station transmitter used for receiving a corresponding frequency information source; the power detection module is connected with at least one master station transmitter and is used for acquiring level signals of all master station transmitters and sending the level signals corresponding to all master station transmitters to the audio switching module; and the audio switching module is connected with the power detection module, and is used for receiving information sources with different frequencies, selecting the information source with the corresponding frequency through each level signal when the level signal indicates that the main station transmitter has a fault, and sending the information source with the corresponding frequency to a broadcasting transmitting station. The main transmitting station obtains the level signal of the main station transmitter through the power detection module, and the audio switching module selects the information source of the corresponding frequency according to the level signal, so that the information source can be automatically sent to the substitute broadcasting transmitting station when the main station transmitter fails, and the substitute broadcasting transmitting station performs substitute broadcasting.

The invention relates to the technical field of rail transit communication and broadcast control, and discloses an integrated passenger alarm which comprises a noise detection module and an existing passenger emergency alarm module. Wherein the noise detection module is used for acquiring a passenger room environment noise volume under a preset condition; the existing passenger emergency alarm module comprises an alarm triggering unit and a sound pickup unit. As the noise detection function is integrated into the passenger alarm, when emergency talkback is carried out, the passenger room broadcast volume automatic adjustment function is closed, and after emergency talkback is finished, the passenger room broadcast volume automatic adjustment function is recovered. And broadcast adjustment closed-loop logic is constructed, so that the integration of an equipment structure and the intelligentization of broadcast control are realized, and the response speed and deployment flexibility of compartment voice are 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.

The utility model discloses a networked broadcast system, which comprises a networked broadcast host server, an Ethernet and a broadcast playing terminal, and the broadcast playing terminal is in communication connection with the networked broadcast host server through the Ethernet. The broadcast playing terminal comprises a networked outdoor partition explanation column loudspeaker, a network visual talkback terminal, a network visual LED screen terminal and an intelligent broadcast lamp post. The networked outdoor partition explanation sound post, the network visual talkback terminal, the network visual LED screen terminal and the intelligent broadcast lamp post communicate with the networked broadcast host server through the Ethernet, and broadcast playing, talkback and LED screen display functions are achieved under the control of the networked broadcast host server. The technical problem that an existing networked broadcasting system is difficult to meet diversified requirements of users is solved.

A method and apparatus for automatically switching the frequency of a vehicle radio. The method includes: receiving, by a first tuner, a first signal at a frequency being listened in the vehicle; determining whether an electric field condition of a second signal received at the alternative frequency satisfies a first criterion; when it is determined that the electric field condition of the second signal meets the first standard, determining whether the similarity between the first signal and the second signal meets a second standard; and when it is determined that the similarity between the first signal and the second signal satisfies a second criterion, automatically switching the reception frequency of the vehicle radio to the alternative frequency. The first criterion and the second criterion are changed in consideration of noise caused by an electric power steering system of the vehicle.

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 provides an all-optical ring network IP broadcast system, which is characterized by comprising a multi-link network broadcast server, a multi-link network broadcast inter-cut box, a multi-link network audio collector, a multi-link network fire-fighting linkage device, a multi-link optical fiber loudspeaker box, a multi-link optical fiber ceiling loudspeaker, a multi-link optical fiber sound post and a core ring network optical switch, the multilink network broadcast server, the multilink network broadcast inter-cut box, the multilink network audio collector, the multilink network fire-fighting linkage device, the multilink optical fiber loudspeaker box, the multilink optical fiber ceiling loudspeaker and the multilink optical fiber sound post are all internally provided with optical fiber data core boards. The system has the characteristics of streaming media transmission interconnection and intercommunication of a network broadcasting system, and also has the characteristic of no transmission delay of an audio optical transmitter and receiver; normal operation of equipment of the whole system is not affected when any optical fiber node is disconnected.

The invention discloses a handheld emergency broadcasting device convenient to use, which comprises a handheld handle and an emergency broadcasting body, a movable groove is formed in the handheld handle, a supporting rod is movably mounted in the movable groove through a height adjusting mechanism, and a first supporting block is fixedly connected to the top end of the supporting rod. According to the invention, the emergency broadcast body can rotate forwards and backwards along the circumferential direction only by holding the handle, so that the emergency broadcast body swings forwards and backwards at an elevation angle and is used for emergency broadcast during lifting, the propagation range of the whole emergency broadcast is expanded, the limitation in broadcast use is smaller, and the service life of the broadcast is prolonged. The emergency broadcasting device can be realized only by holding the handheld handle at one position, so that the situation that the broadcasting range is changed by holding the broadcasting device and swinging the arm back and forth in the prior art is avoided, the difficulty in emergency broadcasting is greatly reduced, the overall using effect is better, the structure is simple, great convenience is brought to people to use, and the emergency broadcasting device is worthy of popularization and application. The method is suitable for popularization.

The invention relates to a digital regeneration-based static orbit satellite broadcast forwarding system, which is characterized in that a demodulation receiver receives uplink data of a ground station through a receiving antenna, completes data demodulation and transmits the data to a rear-end data processor; the data processor judges whether the uplink data needs to be fused with the real-time remote sensing data or not according to the identifier of the uplink data, and if the uplink data is the data needing to be fused, fusion processing of the uplink data and the remote sensing data is completed in the data processor; if the uplink data does not need to be fused, directly storing the uplink data into the solid-state memory; reading broadcast distribution data from the solid-state memory, and forwarding the broadcast distribution data to the broadcast modulator through the data processor; the broadcast modulator encodes and modulates broadcast downlink data into a radio frequency signal, and the radio frequency signal is broadcast and distributed to a designated area through the transmitting antenna after being subjected to filtering and power amplification. And the use efficiency of broadcast distribution of the geostationary orbit remote sensing satellite is effectively expanded.

The invention provides a global sound amplification device, method and system, and the device comprises a plurality of global sound amplification microphones which are used for wirelessly transmitting audio signals in a preset frequency band range; the plurality of global sound reinforcement receivers are used for receiving and demodulating the audio signals and carrying out networked transmission on the demodulated audio signals and corresponding signal intensity data through an AES67 network protocol; and the global sound reinforcement management host is used for receiving and detecting the demodulation audio signals of the global sound reinforcement receivers and the corresponding signal intensity data, and when the offline signal intensity of the global sound reinforcement receivers is lower than a preset threshold value, the global sound reinforcement receiver with the highest online signal intensity performs audio output. On the basis, continuity and stability of sound amplification signals can be achieved in a large-range scene, the problem of audio interruption or interference caused by signal difference of receivers is avoided, meanwhile, system wiring is simplified in a networked transmission mode, installation and maintenance cost is reduced, and therefore seamless coverage sound amplification in the whole scene range is achieved.

The utility model belongs to the technical field of broadcast substations, in particular to a mining intrinsic safety type broadcast communication substation, which comprises a shell with a communication interface on one side, a vent hole is arranged on one side of the shell, and a dustproof component is arranged on one side of the shell, which is positioned on the vent hole and comprises a protective cylinder fixedly connected onto the outer wall of the shell; and the sealing plate is matched with a cavity groove correspondingly formed in the protective cylinder, two clamping seats are fixedly connected to one side of the sealing plate, and a filtering plate is arranged between the two clamping seats. The dustproof component is arranged on the side, located on the ventilation hole, of the shell, the dustproof component is mainly composed of the protection barrel, the sealing plate, the clamping base, the filter plate, the locking mechanism, the pretreatment mechanism and the like, the filter plate can be rapidly replaced due to the arrangement of the locking mechanism, and the dustproof effect of the device can be improved through the arrangement of the pretreatment mechanism; the problems that a broadcast communication substation at the present stage is not good enough in dustproof effect and a filter plate is not easy to replace are solved.

The utility model belongs to the technical field of emergency broadcast, and discloses a high-reliability emergency broadcast active publishing terminal, which comprises a master control intelligent processor, a communication module, a camera shooting assembly, a sensor assembly, an FM module, an audio coding and decoding chip and an audio power amplifier module, the communication module is in signal connection with the master control intelligent processor; signal input ends of the camera component and the sensor component are connected with a signal output end of the master control intelligent processor; the master control intelligent processor is in signal connection with the FM module and the audio coding and decoding chip. The signal output end of the FM module is connected with the signal input end of the audio coding and decoding chip; the signal output end of the audio coding and decoding chip is connected with the signal input end of the audio power amplifier module. According to the utility model, on the basis of an environment perception target identification technology, different sensors are matched to communicate with the master control intelligent processor according to scene requirements, so that the surrounding environment can be accurately identified.

A method of receiving a Bluetooth Low Energy (BLE) audio broadcast and a Bluetooth Low Energy audio broadcast receiver are described. The BLE broadcast audio receiver receives a broadcast isochronous stream (BIS) intended for playback by the receiver. The BLE broadcast audio receiver receives a further BIS intended for playback by a different BLE broadcast audio receiver. The further BIS is retransmitted by the BLE broadcast receiver.

The conversion circuit adapts a legacy radio to play digital broadcasts using a sensing circuit coupled to a control device of the legacy radio to produce a control device position signal. A processor detects changes in this position signal and interprets a pattern of predetermined changes in position signals to generate at least digital radio broadcast scan command. The conversion circuit also includes a digital radio receiver that performs a scan operation in response to the scan command and supplies the processor with a channel list of detected digital stations. The processor associates each of the detected digital stations to a different positional setting of the control device. The processor also interprets different positional settings of the control device as a content selection commands, which it uses to cause the receiver to select a particular content component for playback through an audio amplifier.

The utility model relates to the field of broadcast transmitters, and discloses an all-solid-state short-wave AM20kW broadcast transmitter, which comprises a signal source, an exciter, a pre-stage amplifier, a power divider, a plurality of power amplification systems, a synthesizer, a filter and a directional coupler, the output end of the power divider is respectively connected with the input ends of the plurality of power amplification systems, the output ends of the plurality of power amplification systems are connected to the synthesizer, the output end of the synthesizer is sequentially connected with the filter and the directional coupler, and the output end of the directional coupler is connected to a load. Excitation signals are divided into a plurality of power amplification systems in proportion through a power divider, and uniform distribution of the signals in a wide frequency range is achieved. High-power output is guaranteed, good frequency band consistency is maintained, stable transmission of broadband signals is achieved, and the application requirement of a complex short-wave communication environment is met.

A method and apparatus automatically switch a vehicle radio frequency. The method includes: receiving, by a first tuner, a first signal at a current frequency at which listening is being performed in a vehicle; determining whether an electric field condition of a second signal received at an alternative frequency meets a first requirement; determining whether a similarity between the first signal and the second signal meets a second requirement in response to a determination that the electric field condition of the second signal meets the first requirement; and automatically switching a reception frequency of the vehicle radio to the alternative frequency in response to a determination that the similarity between the first signal and the second signal meets the second requirement. The first requirement and the second requirement are changed in consideration of noise caused by an electric power steering system of the vehicle.

According to embodiments, a radio data receiving method includes receiving radio data in a specific frequency band by a vehicle, and displaying information related to the radio data, and in this case, the radio data includes emergency information, the emergency information indicates an event related to a specific location on a road, and the emergency information is received based on a receivable range of the emergency information.