43 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 present invention discloses a method for identifying vehicle paths on highways, which belongs to the field of electronic communication technology for highways. The method comprises the following steps: S1, a vehicle enters the highway through an ETC gantry at a highway entrance, the ETC gantry transmits path identification point information to an OBU via an RSU radio frequency device, and transmits the information to an on-board path identification system via the OBU; S2, a message broadcast receiving module and a comparison broadcast receiving module on the on-board path identification system respectively receive broadcast signals of a message broadcast base station and a comparison broadcast base station in a broadcast system, and an on-board broadcast device normally plays audio converted from the broadcast signals transmitted by the message broadcast base station; the method can calculate the precise driving route of the vehicle according to the positions of the message broadcast base station 11 and the comparison broadcast base station 12, and utilizes the existing wireless broadcast system, thereby greatly reducing cost investment, improving the accuracy of calculation of the ETC charging system, and ensuring the interests of users.

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 invention relates to the technical field of wireless broadcast frequency adjustment, in particular to a target equipment wireless broadcast frequency dynamic adjustment method and device, a medium and equipment. The method comprises the steps of obtaining smooth environment temperature data of an environment where target equipment is located once every time a preset temperature collection time point is reached; if Tcu-Tcu-1 is greater than delta T, and tcu-tcu-1 is greater than delta t, skipping to determine an algorithm according to Tcur and a preset wireless broadcast frequency, and updating the wireless broadcast frequency of the target equipment; and otherwise, skipping to continue working at the wireless broadcast frequency currently corresponding to the target equipment. According to the invention, the normal operation of equipment and the stability of wireless communication are ensured. The frequent switching of the wireless broadcast frequency is avoided; and the energy consumption optimization is realized.

This application discloses a digital car key, a vehicle communication system, and a method. The digital car key may include a power supply module, a sensor, and a first wireless communication module. The sensor is coupled to the power supply module and the first wireless communication module to collect movement data of the digital car key and send the movement data to the first wireless communication module. The movement data includes movement speed and movement direction. The first wireless communication module is used to scan a first wireless broadcast signal emitted by a target vehicle and pair with the target vehicle to send movement data to the target vehicle, thereby determining the current distance between the digital car key and the target vehicle. Implementing the method of this application, by using the movement data of the digital car key to assist in determining the distance between the digital car key and the vehicle, helps to solve the problem of inaccurate distance measurement caused by obstacles in the transmission path of the wireless broadcast signal or sudden changes in the measured distance within a short period of time.

The embodiment of the invention discloses a communication method and device, temperature measuring equipment, a distribution box and a system. In the embodiment of the invention, the temperature measuring equipment acquires the communication connection state with the first distribution terminal after determining the temperature data packet every time, and sends the wireless broadcast information carrying the temperature data packet when the communication connection state between the temperature measuring equipment and the first distribution terminal is disconnected; and sending the temperature data packet to the server by the second distribution terminal in the broadcast range of the temperature measuring equipment. Wherein the first distribution terminal is a distribution terminal bound with the temperature measuring device, and the second distribution terminal is a distribution terminal belonging to the same distribution group with the first distribution terminal. Therefore, the second distribution terminal helps the first distribution terminal to send the temperature data packet to the server when the communication connection between the first distribution terminal and the temperature measurement device is disconnected, and the embodiment of the invention can ensure the real-time performance and integrity of the temperature data sent to the server by the temperature measurement device, thereby better guaranteeing the user experience.

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 invention provides a new wireless broadcast optimization method, device and equipment, a storage medium and a program product, and belongs to the technical field of wireless communication, and the method comprises the steps that an application function AF is internally provided with an error code corresponding table, and the error code corresponding table is used for storing the corresponding relation between the error rate and the forward error correction FEC coding proportion; receiving a real-time transmission control protocol packet reported by each multicast terminal, wherein the real-time transmission control protocol packet comprises an error rate; performing bit error rate statistics based on the geographic areas to obtain area bit error rates corresponding to the geographic areas; and determining the FEC coding proportion of each geographic area based on the bit error rate of each area and the bit error coding corresponding table. The broadcast channel state is indirectly estimated by means of feedback of the multicast terminal so as to obtain channel measurement, FEC coding is guided according to the corresponding relation between the bit error rate and the FEC coding proportion, and reliability is improved and data transmission efficiency and transmission quality are balanced on the basis of ensuring large capacity and short time delay of broadcast services.

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.

To provide a remote unlocking system which enables a management box for storing keys for opening a facility such as an evacuation shelter to be unlocked by remote control and opened quickly.SOLUTION: A remote unlocking system includes a master station 10 and individual household receivers 11 that receive wireless broadcasts transmitted from the master station at facility 1. A management box 20 is installed outside the facility and stores keys for locking / unlocking the facility. The management box includes a box body for storing the keys, a door, a door locking / unlocking unit for locking / unlocking the door, and an operating unit for operating the door locking / unlocking unit. Following the wireless broadcast, the master station 10 transmits an unlocking signal in the form of a DTMF signal that unlocks door 22 of management box 20, and individual household receiver 11 outputs the DTMF signal received following the wireless broadcast as an audio signal. The management box 20 includes a detector for the DTMF signal output from the individual household receiver 11. If the DTMF signal detected by the detector is an unlocking signal for unlocking the door of the management box, the operating unit operates the door locking / unlocking unit based on the unlocking signal to unlock the door.SELECTED DRAWING: Figure 1

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 provides live subtitling system for subtitling a series of people while they are speaking to a series of clients, in particular the series of people performing in a theatre, for instance playing in a play, singing in a musical, opera or operetta, with the clients forming part of a live audience. The live subtitling system comprising at least one speech-to-text conversion system and a wireless broadcast system.

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 invention relates to a diagnostic method (16) for a wireless broadcast reception system (1) of a motor vehicle (8), having two transmit-receive paths (2a, 2b). The invention also relates to the wireless broadcast receiving system (1) and to a motor vehicle (8) having the wireless broadcast receiving system (1).

An endpoint (EP) device can communicate with multiple gateways via wireless signals, such as wireless broadcast signals. The EP device is controlled under the direction of a control server, such as an application server, to communicate via a single gateway. The control server associates the EP device with a single target gateway and / or uses EP transmission power control training iterations to reduce the EP transmission power level until the EP device can only successfully transmit its wireless signals to the single gateway.

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 invention discloses a photovoltaic optimizer rapid turn-off system based on wireless relay communication, which relates to the field of photovoltaic optimizers and comprises a three-layer hardware architecture including a collector serving as a main control layer, a repeater serving as a transmission layer and an optimizer serving as an execution layer. According to an active command triggering path, a turn-off instruction is generated from a collector, transmitted to a repeater through an RS-485 bus, then subjected to protocol conversion and sent through 2.4 G wireless broadcast, an optimizer receives and decodes the instruction, and turn-off is completed by controlling the duty ratio of a switch; according to the passive disconnection protection path, a 10-30 s countdown timer is arranged in the optimizer, and the heartbeat packet is reset to be 0 every time the heartbeat packet is received; after timeout, interruption is triggered, and the relay is forcibly disconnected. The dual power-off mechanism realizes triple breakthrough of quick response, independence, reliability and cost optimization through hierarchical design of active control and passive self-rescue, and improves the survivability and personnel protection ability of the photovoltaic system in an emergency scene.

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.