26 results about "Wireless broadcast" patented technology

The application provides a wireless broadcast service message enhanced transmission method, which comprises the following steps: S1, connecting a broadcast service server and at least one first broadcast service client to a switch network subsystem in wired communication; the switch network subsystem is in communication connection with a Wi-Fi subsystem; the Wi-Fi subsystem is in wireless communication connection with at least one second broadcast service client; S2, presetting the Wi-Fi subsystem; S3, when a broadcast service client is interested in a video, a user feeds back an IP address of the broadcast service client which needs to receive the video; S4, performing legality check on the minimum transmission rate of the at least one first broadcast service client and / or the at least one second broadcast service client; and S5, transmitting by the Wi-Fi subsystem according to the parameters preset in step S2. According to the requirements of different service clients, different processing procedures can be executed correspondingly, so that the requirements of real-time video transmission can be met.

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.

The utility model discloses a wireless broadcast interphone with GPS positioning and a system thereof. The wireless broadcast interphone comprises a wireless broadcast transmitting unit, a bidirectional wireless communication module, a GPS receiving unit, a position data transmission module, a battery and power management unit and a central control system. The wireless broadcast transmitting unit broadcasts audio information through radio waves, the two-way wireless communication module achieves real-time voice communication between devices, the GPS receiving unit obtains device position information and transmits the device position information to the central control system, and the central control system receives and processes the position information and voice feedback and sends broadcast information and instructions according to requirements. The battery and the power management unit provide power support and have a battery electric quantity monitoring function. The system can be widely applied to scenes of large-scale activities, emergency command, security management and the like, has the advantages of wide coverage range, accurate positioning, stable communication, intelligent battery management and the like, can effectively improve command and communication efficiency, and ensures reliable operation of the system in a complex environment.

The embodiment of the invention provides a communication configuration method of an intelligent terminal and a related device, and relates to the technical field of communication. Acquiring an NFC label signal of the intelligent terminal; if the communication type is point-to-point wireless communication, configuration information is sent to the intelligent terminal, so that the intelligent terminal carries out point-to-point wireless broadcasting, and a scanning instruction is sent to the vehicle machine system, so that the vehicle machine system establishes communication connection with the intelligent terminal and carries out communication configuration under the condition that the point-to-point wireless broadcasting of the intelligent terminal is scanned; if the communication type is network access communication, configuration information is sent to the intelligent terminal, equipment scanning is carried out, under the condition that point-to-point wireless broadcast of the intelligent terminal is scanned, communication connection with the intelligent terminal is established, and network access information corresponding to the vehicle machine system is sent to the intelligent terminal; therefore, the intelligent terminal establishes communication connection with the vehicle machine system based on the network access information and performs communication configuration, user operation is simplified, and automatic communication configuration of the intelligent device is realized.

The utility model provides a kind of FM modulation transmitting device, including the external interface group for receiving external signal, FM modulator for modulating received external signal, controller for controlling modulated signal and display component for displaying modulated signal.The utility model realizes wired or small range wireless broadcast type voice announcement, audio program broadcast etc. Operation, with small size, deployment quick, wide coverage and frequency adjustable range Large advantages such as range, solve the problem of insufficient communication coverage in remote and special areas, poor equipment adaptability in emergency communication scenarios and difficult to meet the signal conversion requirements of special equipment.

The invention discloses a wireless broadcast upgrading device and method. A master node slices firmware and then continuously broadcasts the firmware, slave nodes receive the firmware in parallel and locally reconstruct the firmware, and breakpoint resume, grouping upgrading, digital signature and version rollback are supported. According to the method, the upgrade time is shortened to a second level from a minute level of a traditional point-to-point mode while extremely low air port occupation is kept, and the method can be widely applied to scenes such as intelligent sound equipment needing large-scale, high-reliability and rapid upgrade. According to the invention, serial upgrading is changed into parallel upgrading in a wireless broadcast mode, so that the time cost of upgrading is reduced, the upgrading efficiency is improved, and the fault tolerance is improved. The problems of time cost, low efficiency and low fault tolerance of serial upgrading are solved.

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.

Systems and methods are provided for controlling electric and electronic devices. The devices may communicate with each other in a many-to-many, peer-to-peer network to provide control functionality without the need for a central controller. Device-to-device control messages may be implemented over short range, wireless broadcast messages.

The present subject matter discloses an optimal range-assisted adaptive wireless broadcast communication. The disclosed system dynamically determines real-time position information and the best quality reception range of a broadcast transmitter generates correlated broadcast beacon packets embedded with spatial aware information. The system further generates chains of assistive beacon batches including the correlated broadcast beacon packets and transmits it by interleaving with the main adaptive broadcast stream. A broadcast receiver extracts the spatial aware information from the main adaptive broadcast streams and determines an optimal position of the broadcast transmitter with reference to self-position and co-relates this information with the extracted spatial aware information to further determine the best quality reception region for the multi-stream broadcast contents.

The embodiment of the invention discloses a dynamic sliding window data frame association coding method and device, a dynamic sliding window data frame recovery method and device and electronic equipment, and the data frame recovery method comprises the following steps: reading corresponding data frames and association frames from L sub-cache regions in a receiving cache under the condition that a lost data frame exists currently, carrying out recovery operation on the lost data frame; wherein a data frame corresponding to the broadcast time slot and a corresponding association frame are stored in each sub-cache region, the association frame is obtained by performing association coding on at least two of K data frames including the data frame before the data frame by the wireless broadcast sending end, and K is a coding association length.

The invention relates to the technical field of photovoltaic distributed energy storage, and provides a photovoltaic separable battery pack mounting and testing method and device. The method comprises the following steps: respectively issuing corresponding wireless broadcast instructions to equipment in a plant assembly stage and a field installation stage through a gateway or a platform; the equipment enters a broadcast monitoring state after being powered on, receives the wireless broadcast instruction, and executes a test of a corresponding stage according to the wireless broadcast instruction; after the equipment completes the test, generating a structured test report and uploading the test report to the platform through a wireless network; and the platform judges the current state of the equipment according to the test report and provides visual feedback for technicians. The problem that a traditional testing method highly depends on manual operation and is poor in practicability is solved.

The invention provides a self-powered equipment fault detection device based on a piezoelectric energy harvesting resonance characteristic, and the device comprises a piezoelectric energy harvesting unit which is used for converting the vibration of detected equipment into a piezoelectric signal; the self-powered piezoelectric circuit is used for converting the piezoelectric signal into a power supply signal; the detection control circuit is used for keeping or lowering the power supply signal through a first control signal output end and outputting a normal state signal or an abnormal state signal through a second control signal output end; and the state broadcast circuit is jointly controlled by the self-powered piezoelectric circuit and the detection control circuit, and sends a wireless broadcast signal when the state of the detected equipment is normal, otherwise, does not send the wireless broadcast signal. According to the self-powered equipment fault detection device provided by the invention, the judgment of the state of the detected equipment and the sending of the judgment result can be realized without any external power supply and sensor.

The invention discloses a vehicle motor control method and device, a storage medium and a vehicle. The method comprises the steps that the current running state of vehicle-mounted audio receiving equipment is determined; and under the condition that the vehicle-mounted audio receiving equipment is in the running state of outputting the wireless broadcast audio, a vehicle motor is driven to work in a driving mode of continuously outputting driving signals. The running state of the vehicle-mounted audio receiving equipment is detected in real time, and when the vehicle-mounted receiving equipment is recognized to be in a working state, the driving mode of a vehicle motor is automatically switched into a continuous output (full-voltage output) driving mode, so that a high electromagnetic interference signal generated by the action of a high-frequency switch is fundamentally eliminated, and intelligent avoidance of an interference source is realized; the same-frequency interference on the wireless broadcast signal is completely eliminated, and the suppression effect on the interference of the wireless broadcast signal is effectively improved. In addition, the method does not need to change or add any hardware circuit, the method is completely realized through an embedded software module, and the overall cost is remarkably reduced.

This application provides a dual-mode wireless broadcast obstacle warning system and method. It includes: an optical warning module for placement at the obstacle and outputting aviation warning flashing light signals; a data acquisition module for automatically acquiring the obstacle's position, altitude, and current time data; a configuration module for setting obstacle type information, influence range information, and occupancy time information; a data processing module for generating a structured signal containing obstacle identification and status information, and performing spatial encoding processing on the influence range information; a wireless broadcasting module for periodically broadcasting the structured signal; a receiver module for decoding, extracting data, and verifying the structured signal to obtain obstacle analysis results; and a post-processing module for generating visual display data, flight path planning data, or conflict resolution data. This application can improve the integrity of obstacle warnings, increase the efficiency of airspace information utilization, and reduce the risk of low-altitude flight collisions.

The application discloses a terminal and household appliance connection method, which comprises the following steps: receiving a wireless broadcast signal of a household appliance; if the wireless broadcast signal contains preset information, displaying an available device list; the available device list comprises device information of all household appliances which are currently allowed to establish a wireless connection with a terminal; marking device information of a target household appliance in the available device list of the terminal, so that the device information of the target household appliance is displayed in a manner different from other device information in the available device list; wherein the preset information is sent by the household appliance in response to a preset trigger operation, and the target household appliance is the household appliance which sends the preset information. The application also discloses a terminal, a household appliance and a computer readable storage medium. The application aims to enable a user to accurately identify a household appliance which needs to be connected to a terminal, and improve the efficiency of wireless connection between the terminal and the household appliance required by the user.

The utility model discloses a vehicle-mounted emergency communication device, a vehicle auxiliary instrument desk assembly and a vehicle, the vehicle-mounted emergency communication device comprises a function control panel and a plurality of function control modules, the function control panel is arranged on an auxiliary instrument desk and comprises a display screen and function keys; the plurality of function control modules are integrated on the function part control panel, and the plurality of function control modules comprise an air conditioner control module and an analog signal radio module; the function key is reused for operation control of the air conditioner control module and the analog signal reception module, and the display screen is reused for operation parameter display of the air conditioner control module and the analog signal reception module. The analog signal reception module can receive emergency information of a wireless broadcast station in an emergency. The air conditioner control module and the analog signal reception module are both hidden in the auxiliary instrument desk, and space utilization can be optimized. The air conditioner control module and the analog signal reception module share a display screen and function keys, so that the cost can be saved.

The invention provides a Bluetooth beacon tracking method and system, and the method comprises the steps: sensing peripheral networking nodes with the same networking identifier in a tracking state through configuring operation parameters comprising the networking identifier of a Bluetooth beacon; and dynamically adjusting the signal transmitting power of the wireless broadcast signal of the Bluetooth beacon according to the sensed number of the networking nodes with the same networking identifier at the periphery, so that at least one networking node exists in the receiving range of the wireless broadcast signal corresponding to the signal transmitting power, and transmitting a wireless broadcast signal carrying the networking identifier by adopting the signal transmitting power, so as to transmit the position information of the Bluetooth beacon to a positioning center through a networking node in a receiving range of the wireless broadcast signal corresponding to the signal transmitting power, and the positioning center tracks the position of the Bluetooth beacon according to the position information, so that the cruising ability and the positioning range of the Bluetooth beacon can be greatly improved, and the application advantages of the Bluetooth beacon in the asset management field are effectively improved.

Provided in the present invention are a Halow-WiFi-based wireless broadcast method and apparatus, a device and a storage medium, which can reduce the number of devices by means of a Halow-WiFi ad hoc networking mode, thereby achieving efficient broadcast coverage. On the basis of a network topology, devices can intelligently adjust a transmission path therebetween, thereby improving communication efficiency and reducing the risks of delay and interruption. Moreover, by means of using the Halow-WiFi technology, the present invention can effectively expand the coverage of wireless broadcast; and especially in a non-occluded environment, the transmission distance of an audio signal can reach 3 kilometers, and an effective transmission distance of about 1 kilometer can still be maintained in an urban occluded environment, thereby achieving relatively small signal attenuation and a relatively strong anti-interference capability, and ensuring signal stability and clarity in different environments.

1. Name of the product in this design: Broadcast Transmitter and Receiver Equipment. 2. Purpose of this design: For receiving wireless broadcast signals. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The application provides an identity authentication method and device, electronic equipment and storage medium. When receiving an authentication request from a user terminal, a wireless broadcast signal containing a first random number and a first timestamp is broadcast to the user terminal; an encrypted beacon based on a connectionless low-power wireless communication protocol and / or a Bluetooth low-power broadcast extension protocol is received from the user terminal, the encrypted beacon being a beacon frame encrypted by a temporary key generated by the user terminal based on the first random number and the first timestamp; an identity authentication attribute is determined based on a time difference between a receiving time and a sending time of the encrypted beacon, a wireless signal strength of the encrypted beacon and a decryption verification result of the encrypted beacon; when the identity authentication attribute is a successful verification, a verification pass confirmation information is returned to the user terminal through an established wireless communication connection. The scheme improves the overall security, attack resistance and authentication reliability of near-field wireless identity authentication in complex environments.

This invention discloses a wireless time synchronization and sampling method and system for a high-precision waveform recording fault indicator. The method includes: a collection unit periodically transmitting a wireless broadcast time synchronization frame sequence containing a preparatory frame and a synchronization trigger frame; each acquisition unit entering an extended listening state upon receiving the preparatory frame, and recording the write index of its local sampling buffer and the current count value of the sampling timer at the moment of hardware interruption upon receiving the synchronization trigger frame; a designated master reference unit wirelessly broadcasting its time stamp; slave units calculating the deviation and dynamically adjusting the automatic reload register value of their local sampling timers to align the sampling pulse phase with the master reference unit; and slave units also fine-tuning the sampling timer based on the cumulative synchronization error over multiple time synchronization periods to compensate for crystal oscillator frequency deviations and achieve long-term synchronization maintenance. This invention achieves high-precision synchronous sampling of multi-phase distributed acquisition units in a purely wireless manner, requiring no GPS or wired transmission, and is suitable for recording fault waveforms in power distribution lines.

Systems and methods include a medical device that scans for wireless broadcasts based upon received input or satisfying a scanning criterion. The medical device, based upon the scan, identifies data wirelessly broadcast from a control device. The medical device outputs information to the interface identifying the control device. The medical device receives input from the interface selecting the control device. The medical device receives a command from the control device. The medical device physically interacts with a user based upon the command received from the control device. The medical device sends wireless confirmation of pairing to the control device. The medical device subsequently sends wireless confirmation of unpairing to the control device. The medical device performs a scan for wireless broadcasts in response to the unpairing, based upon received input or satisfying the scanning criterion.

To provide a radio broadcasting system capable of detecting abnormality other than a phenomenon that the voice of a speaker can not be heard at all SOLUTION: The radio broadcasting system 100 of the present invention includes a transmission unit 12 that transmits radio broadcast information, a reception unit 21 that receives the radio broadcast information, an output unit 22 that outputs a sound wave based on the radio broadcast information, a recording unit 23 that records the sound wave output from the output unit, and a determination unit 242 that determines whether a broadcast is normal or abnormal by comparing recorded data recorded by the recording unit 23 with basic data included in the broadcast to be originally broadcasted.SELECTED DRAWING: Figure 1

The invention discloses a multi-language synchronous broadcasting system and method based on Auracast. The method comprises the steps that a pickup processing module is configured to output a voice signal to be translated; the energy detection module is configured to trigger a translation request when the voice segment starts; the cloud translation module is configured to generate a target language voice stream in response to the translation request; the broadcast transmitting module is configured to distribute an independent BIS channel for a target language voice stream and an original voice stream through a wireless broadcast signal based on an Auracast protocol, and add a network time-based protocol for each voice data packet in each voice stream; and the audience terminal module is configured to respond to a selection request of a user for a target language and output audio according to the voice data packet in the target BIS channel corresponding to the target language. Therefore, synchronous, real-time and on-demand broadcasting of multi-language content is realized through real-time pickup, segmented uploading, cloud streaming translation, synchronous broadcasting and on-demand selection playing of a user.

This invention relates to the field of display module technology and discloses a wireless multi-card synchronous control method for display modules and a display screen. The method includes: acquiring a first frame timestamp through a master control card and encapsulating the first frame timestamp into a frame synchronization broadcast packet for wireless broadcast within the time slot corresponding to the dedicated transmission time slot offset; acquiring a second frame timestamp through multiple slave control cards and performing step correction on the first local frame period until the frame phase error converges to within the phase-locked steady-state threshold to obtain the second local frame period; each slave control card drives its subordinate display module with the second local frame period, and the master control card reports the frame phase-locked state status response packet according to the time slot corresponding to the dedicated transmission time slot offset of each slave control card. This invention ensures that the entire network continuously maintains phase-locked steady state under dynamic disturbances, thereby realizing reliable wireless synchronous refresh control of large-scale multi-card display modules without external synchronization cables.

The utility model discloses a pipeline line patrol detection abnormity identification positioning alarm device, which comprises a flight line patrol structure, a speaking anti-attack structure is arranged below the flight line patrol structure, the flight line patrol structure comprises an unmanned aerial vehicle body serving as a body, and a control box is fixedly arranged at the bottom of the unmanned aerial vehicle body. Meanwhile, a battery, a wireless controller, a remote GPS positioning alarm, a data transmission module, a data receiving module, a wireless broadcast module and a wireless network module are fixedly installed in the control box through a circuit board, and gas detection modules are fixedly installed on the two sides of the control box; the battery, the wireless controller, the remote GPS positioning alarm, the data transmission module, the data receiving module, the line broadcasting module, the wireless network module and the gas detection module are electrically connected, and the pipeline line patrol detection abnormity identification positioning alarm device plays a role in real-time remote positioning through the arranged remote GPS positioning alarm.