9results about "Broadcast system receiving" patented technology

The invention relates to a wireless broadcast connection system and method and a method for automatically configuring an emergency alarm area. The system comprises a wireless broadcast receiving device and an intelligent terminal, the wireless broadcast receiving device is configured to be used for receiving broadcast signals and wirelessly transmitting broadcast audio streams to the intelligent terminal, and the wireless broadcast receiving device comprises a broadcast receiving processing unit, a wireless communication module and a digital signal processing unit. The digital signal processing unit is connected with the broadcast receiving and processing unit and the wireless communication module, and is used for encoding the digital audio signal into an audio stream in a compressed format and carrying out transmission buffer management on the audio stream; wherein the digital signal processing unit is provided with a self-adaptive transmission control module, and the self-adaptive transmission control module has a bidirectional communication capability and is used for receiving a playing buffer area state feedback signal from the intelligent terminal and dynamically adjusting the transmission rate of sending the compressed audio stream to the intelligent terminal according to the feedback signal; therefore, synchronous control of buffer areas of a sending end and a receiving end is realized.

System for a real-time radio receiver network, wherein the system comprises: a remote digital antenna digital receiver (“RDADR”) with a processor; a first remote digital antenna (“RDA”) comprising a processor, at least one receiver and at least one antenna; a second RDA with a processor, at least one receiver and at least one antenna, an audio source that is coupled to the transmitter; and an audio output device coupled with the RDADR, where the RDADR, the first RDA and the second RDA are coupled to each other via a digital bus, wherein the first RDA and the second RDA attempt to receive one or more digital signals from a transmitter, and if the one or more digital signals are received without error by the first RDA or the second RDA, the RDA that has received the one or more error-free digital signals transmits the one or more error-free digital signals via the digital bus to the RDADR, where the audio source generates one or more digital signals, and where the audio source is at least a microphone or a musical instrument.

Aspects of the present invention relate to an outdoor emergency broadcasting device, an outdoor emergency broadcasting system, and a computer-implemented outdoor emergency broadcasting method. The outdoor emergency broadcasting device comprises: one or more speakers configured to provide an audible emergency message; a wireless receiver configured to receive an emergency alert from an external device; a controller; one or more batteries for providing power to the one or more speakers, wireless receiver and controller; and a device housing substantially enclosing the controller and the one or more batteries; wherein the controller is configured to: receive, from the external device via the wireless receiver, the emergency alert; determine audio output data in dependence on receiving the emergency alert; and transmit the audio output data to the one or more speakers for providing the audible emergency message.

The utility model provides a kind of sound mixing device of bluetooth FM radio function, including signal input unit, sound mixing processing unit, front-stage amplification unit, filter circuit unit, rear-stage power amplification unit, audio playback unit;At least one signal input unit input digital audio signal is mixed sound after being handled by sound mixing processing unit, amplifies by front-stage amplification unit, then is filtered by filter circuit unit, amplifies by rear-stage power amplification unit after entering audio playback unit and plays;The input unit includes bluetooth receiving module, digital FM radio unit and at least one microphone.The utility model uses digitization, high intelligentization, integrated chip, product volume is small, electrical performance is good.

The utility model relates to wireless early warning broadcast technical field, concretely relates to a wireless early warning broadcast equipment with protection structure, its core includes connecting screw cylinder and inside fixed insulating metal clamping piece, is used for clamping wire conductor to guarantee conduction, two groups of protection screw cylinders are installed through the thread outside connecting screw cylinder, and the sealing washer of screwing place is pressed to form axial seal, the front end of protection screw cylinder is fixed and sets up the insertion cylinder, and the adjacent position coaxially fixed outer screw clamping cylinder, its outside assembly locking screw cylinder, wire outer sheath inserts insertion cylinder and extends to the annular gap of insertion cylinder and outer screw clamping cylinder, and the locking screw cylinder is driven outer screw clamping cylinder radial elastic contraction clamping sheath, the utility model constructs the anti -tension frame through metal thread engagement, and sealing washer blocks axial invasion, and elastic clamping eliminates radial gap, and the persistent sealing of connecting point is realized, and the anti -tension reinforcement and non -destructive dismounting are strengthened, and the leakage and fracture defects of outdoor wire joint are radically cured.

The present disclosure relates to a broadcast receiving apparatus. The broadcast receiving apparatus according to an embodiment of the present disclosure includes an impedance matching circuit configured to adjust an input impedance value of the broadcast receiving apparatus; and a controller, wherein, the controller controls the impedance matching circuit so that the input impedance value is adjusted to a certain reference impedance value, when a mode of the broadcast receiving apparatus is a mode of receiving a broadcast signal through a cable, and controls the impedance matching circuit so that the input impedance value is adjusted to be less than the certain reference impedance value, when the mode of the broadcast receiving apparatus is not the mode of receiving the broadcast signal through the cable. Accordingly, it is possible to appropriately amplify a broadcast signal while satisfying a reference related to return loss, thereby reducing network management cost of a network operator and providing a broadcast image of better quality to a user. In addition, various embodiments are possible.

A development environment device comprises a software-defined radio that processes data from a target device and a device control unit that controls the operation of the target device based on an output from the software-defined radio. The software-defined radio is configured to decode data corresponding to an output signal from the tuner, transmitted by the device environment over the communication network, and to output the decoded data to the device control unit. The device control unit is configured to determine, based on the data transmission rate in the communication network, whether the output of data corresponding to an output signal from at least one of the multiple tuners should be stopped, and if it is determined that the output of data corresponding to an output signal from at least one of the multiple tuners should be stopped, to send a stop command to the device environment.

The utility model discloses an intelligent radio with a clock display screen, and relates to the technical field of radios. The radio comprises a radio body, an LED nixie tube display screen for displaying time is fixed at the side end of the radio body, a nickel-metal hydride battery electrically connected with the LED nixie tube display screen is arranged in the radio body, and a charging port for charging the nickel-metal hydride battery is arranged in the radio body; furthermore, in order to save resources, a containing groove is formed in the top end of the radio body, a photovoltaic panel used for charging the nickel-metal hydride battery is fixed in the containing groove, the photovoltaic panel is electrically connected with the nickel-metal hydride battery, and a cover plate used for protecting the photovoltaic panel is rotationally arranged in the containing groove; through the design of the positioning assembly and the extrusion assembly, the cover plate can be stably fixed in the containing groove, a user can conveniently open the cover plate by pressing the pressing plate on the handle, and operation is easy and convenient.

An outdoor emergency broadcasting device 300 comprises: one or more speakers 304 to provide an audible emergency message; wireless receiver 302 to receive an emergency alert from an external device; a