68results about How to "Improve broadcast efficiency" patented technology

The invention relates to the field of satellite navigation, and discloses a satellite navigation positioning enhancing system in an indoor environment. The system comprises a reference unit, a centralized satellite navigation signal simulator and N transmitting antennas, the reference unit and the centralized satellite navigation signal simulator are connected successively, and the N transmitting antennas are connected with the centralized satellite navigation signal simulator, and emit N regenerated satellite navigation signals synchronously. The invention also discloses a satellite navigation positioning enhancing method in the indoor environment. Satellite navigation signals in an indoor area are received instantly or reference signals are obtained via the Internet, and navigation signals synchronized with signals of a real satellite navigation system in the indoor area are generated and broadcast in real time indoor. Indoor satellite navigation positioning is realized without change of a navigation terminal. The system of the invention is low in construction difficulty, low in cost and general and supports GNSS systems.

The invention discloses a broadcasting method and equipment of items to be done, and belongs to the field of the communication technology. The method comprises the following steps: obtaining an item to be done and a detection time slot corresponding to the item to be done; in the detection time slot, detecting the current state of a user; and judging whether the current state of the user meets a preset condition or not, broadcasting the item to be done if the preset condition is met, and stopping broadcasting the item to be done if the preset condition is not met. In the detection time slot, the current state of the user is detected, then, whether the current state of the user meets the preset condition or not is judged, and the item to be done is broadcast if the current state of the user is judged to meet the preset condition; and therefore, when the detection time slot is up, the item to be done is broadcast according to the current state of the user, for example, the user is under a motion state or the user is within a preset distance range, the item to be done is broadcast, broadcasting efficiency is improved, the omission of important items can be avoided when the user is under an emergency state or other states, and user experience is improved.

The embodiment of the invention provides a boot video playing method and device, relates to the technical field of software, and can shorten the playing time of a boot video. The method comprises the steps of: when a boot instruction is detected, starting a system initialization process, wherein the system initialization process comprises a process of starting a bootstrap and a Kernel, a process of guiding the initialization system, and a video playing process for providing a video playing service; judging whether a boot video file exists in the system or not; and, if the boot video file exists, loading a boot video player supporting at least one video format, and playing the boot video by using the boot video player.

The invention discloses a method for voice control broadcasting device and a broadcasting device. The method comprises the following steps: the broadcasting device detects whether voice information iscollected; when the voice information is collected, the broadcasting device analyzes the voice information to obtain the keywords included in the voice information; the broadcast device generates a control instruction corresponding to the voice information according to the keyword, and executes an operation corresponding to the control instruction. It can be seen that implementing the embodimentof the invention can realize the voice control of the broadcasting device, improve the efficiency of the operator in operating the broadcasting device, and further improve the broadcasting efficiencyof the broadcasting device.

The present invention discloses a real-time on-demand data broadcast scheduling adaptive channel split and allocation system and method. The system consists of a server and multiple users and includes an uplink channel and a plurality of downlink channels. A bandwidth of the uplink channel is smaller than bandwidths of the downlink channels. When the user needs a piece of data, a request is uploaded to the server by using the uplink channel; after the request is uploaded, the user monitors the downlink channels to acquire the data; the server is used for maintaining one request queue (RQ), one pending queue (PQ) and a plurality of broadcast queues (BQ), wherein i is greater than or equal to 0 and is less than or equal to N; the RQ is responsible for collecting user requests, and the server acquires data from a database according to the RQ and generates the PQ; and the server periodically extracts data organization broadcast from the PQ. The channel is adjusted dynamically according to a real-time data request environment, so that the channel can effectively adapt to the broadcast environment in which hotspot data is scattered, hotspots change rapidly and data items change rapidly. The broadcast efficiency of a real-time on-demand data broadcast system is improved effectively.

The invention discloses a data broadcast ARQ method based on maximum-minimum network encoding. The method comprises the following steps: base stations broadcasting data packets; users decoding the data packets and feeding the correct decoding conditions of the data packets to the base station; the base stations performing maximum-minimum network encoding on lost original information to generate network encoding data packets and retransmitting the network encoding data packets, and the users feeding data packet conditions recovered at a retransmission stage back to the base stations; and repeating step 3) until all the users receive all the data packets correctly. The number of the network encoding packets formed by use of the maximum-minimum network encoding method provided by the invention is equal to the number of the lost data packets of the users losing the largest number of the data packets. Therefore, the maximum-minimum network encoding method can preferentially guarantee that the users losing the largest number of the data packets can obtain maximum network encoding gains. The method provided by the invention has the advantages of small average retransmission frequency, high broadcast efficiency and the like, thereby being able to be well applied to a wireless data broadcast scene.

The invention discloses a distributed file system directory quota method, system and device and a computer readable storage medium. The method comprises the steps of receiving a service processing instruction; judging whether the quota margin of a local directory meets the margin requirement for processing the service corresponding to the service processing instruction or not; if not, sending thequota application information to a metadata server; if yes, processing the service, and judging whether the accumulated quota usage amount of the local directory meets a preset reporting condition ornot during the last period for reporting of the quota margin of the local directory; if so, reporting the current quota margin of the local directory to the metadata server. According to the present invention, whether the quota margin of the local directory can meet the service processing requirement or not is actively judged before the service is processed, if not, the quota is applied to the metadata server, so that it is ensured that the situation that the quota is excessive after the service is processed is avoided, meanwhile, reporting is conducted only when the preset reporting conditionis met, the broadcasting frequency is reduced, and the broadcasting efficiency is improved.

The invention discloses an on-sea intermediate frequency digital broadcasting system, comprising: an information management sub-system used to collect and control various kinds of on-sea security information, to create the information files requiring to be transmitted, and to create the emission sequence according to the priorities and the repetitive requirement of the files; an offshore broadcasting and transmitting station to receive and convert the information files from the information management sub-system into an OFDM signal and broadcasting the RF signal to a ship through antenna radiations; and a ship mounted receiver to receive wireless electric signals, to modulate the OFDM signal, to re-create the information files, and according to the application classification of the information files, to display the information contents or provide the information files to a designated device. The information management sub-system and the offshore broadcasting and transmitting station are connected through an offshore network; the offshore broadcasting and transmitting station is connected with the ship mounted receiver through a wireless transmission channel. The on-sea intermediate frequency digital broadcasting system proposed by the invention is able to make the ship information system and the device connected in a seamless manner; and therefore, the broadcasting and transmitting efficiency is high; the coverage is wide and the requirement for broadcasting and transmitting various kinds of MSI data can be fulfilled.

The invention discloses a data broadcasting method based on the finite set network code ARQs and for large-scale receiving ends. The method comprises the following steps that (1) a base station broadcasts data packets; (2) the receiving ends conduct decoding and calculate the decoding gain of each preset network coding scheme according to the decoding satiations, and then the serial number of the scheme with the largest decoding gain is fed back; (3) the base station determines the network coding scheme adopted into the current retransmission by counting feedback information of the receiving ends. According to the data broadcasting method, the finite set network coding schemes need to be pre-set in the base station and at the receiving ends and the finite set network codes preset ARQs are introduced in broadcast communications, therefore, the amount of feedback information is reduced, the average number of retransmission times of the data packets is reduced, the broadcast communication efficiency is improved, and the problems that in an existing broadcast retransmission technology, the retransmission efficiency is low and the number of feedback information is too large under the condition that a large number of receiving ends exist are mainly solved.

The invention provides a low power consumption directional broadcasting method aiming at a wireless sensor network. The low power consumption directional broadcasting method comprises the following steps of: 1. initializing a network topology; 2. dividing a sector region; 3. determining a sensing radius; 4. broadcasting directionally; and 5. carrying out route discovery. The low power consumption directional broadcasting method adds a directional broadcasting idea into an AODV (Ad Hoc Ondemand Distance Vector) route discovering way in an original routing protocol, only aims at broadcasting partial nodes in the ruled sector region and performs packet loss treatment on the nodes outside the directional broadcasting sector, so that the energy of the sensor nodes subjected to the packet loss treatment can be stored for the next application; and multiple network performances of the wireless sensor network can be improved by analyzing a DB-AODV protocol through a simulation experiment.

The invention relates to a data packaging method capable of matching multiple transmission modes and a system. The method comprises steps: S1, service data are divided into fragmented files with fixed lengths; S2, according to a broadcasting plan, the fragmented files and auxiliary data are added in an interleaving mode in a broadcasting queue; S3, the fragmented files are packaged into a plurality of UMCP (Unit Multi-Cast Protocol) blocks and whether data check is added to the UMCP blocks according to the link quality condition; S4, one or more UMCP blocks is packaged into network protocol frames according to the needs of network adaptation. Through carrying out pre-treatment on the fragmented files with fixed lengths, the data dividing process is simplified, service data concurrence in multiple channels can be realized, the broadcasting efficiency is improved, reliability of transmission is improved through mixed broadcasting of service data and auxiliary data and the check function, selective data receiving is realized through service needs, service flexibility and receiving efficiency are improved, the method can be adapted to multiple kinds of data link layer network protocols, and cross network collaboration service in different network conditions can be realized.

The invention discloses a video broadcasting method and a video broadcasting device. The method and the device of the invention are used for transmitting video streaming to a broadcasting server with a live streaming output server via two network paths. The broadcasting server could select one network path for receiving the video streaming from the two network paths, thereby improving video downloading and playing efficiency. The method comprises the steps as follows: the live streaming output server transmits the video streaming to the broadcasting server; the broadcasting server receives the video streaming transmitted by the live streaming output server via a first network path or a second network path. The method is used for transmitting video streaming to the broadcasting server with the live streaming output server via two network paths. The broadcasting server receives the video streaming transmitted by the live streaming output server via the first network path or the second network path, thereby improving the downloading rate of the video streaming. The broadcasting server can be further used for broadcasting outward. The broadcasting efficiency could be improved simultaneously.

The invention discloses a message signal broadcasting method and device based on phase discontinuous R-CSK modulation. The method comprises the following steps: modulating a basic message on an in-phase I branch, and performing BPSK-DSSS direct sequence spread spectrum on the basic message to construct an in-phase I branch baseband signal; modulating the extended message on an orthogonal Q branch,and performing phase discontinuous R-CSK-DSSS direct sequence spread spectrum on the extended message to construct an orthogonal Q branch baseband signal; when the spread message is modulated, determining a pseudo-random spread spectrum sequence for each symbol to be modulated, and keeping a fixed phase interval between two symbols to be modulated with adjacent numerical values by adopting a cyclic shift mode on a basic pseudo-random spread spectrum sequence, wherein the fixed phase interval is at least greater than the chip phase of one pseudo-random spread spectrum sequence, i.e., the phaseinterval between the initial phases (taking the chip as a unit) of the pseudo-random spread spectrum sequence corresponding to two modulation symbols with any adjacent numerical values is a fixed value, and the difference is more than two chips; and carrying out IQ quadrature modulation on the basic message baseband signal of the in-phase I branch and the extended message baseband signal of the quadrature Q branch to form a dual-rate composite message signal, and broadcasting the dual-rate composite message signal.

A method for increasing data transmission efficiency is designed based on the customer / server structure mounted in the system in front of a digital T, which processes the connection of customers, delivers data packets transferred from the customer end to its own buffer and plays data packets based on the transmission strategy to form a transmission flow to be sent to a multiplexer. This invented method applies the way of multiple buffers. Advantage: every customer end corresponds to more than one buffer to reduce the time of waiting for entering into the buffer by the data packet.

The invention discloses an offshore high-frequency wireless chart updating system and method. The system comprises a broadcasting control terminal, a shore-based broadcasting station and a chart receiving terminal, wherein the broadcasting control terminal is connected to a data server; the shore-based broadcasting station is connected to a shore-based network; the broadcasting control terminal and the data server are both connected to the shore-based broadcasting station through the shore-based network; and the shore-based broadcasting station is connected to the chart receiving terminal through a wireless transmission channel. According to the system and the method, a chart file can be conveniently transmitted, the system and the method can be seamlessly connected to a ship information system and equipment, the broadcasting efficiency is high, and the coverage area is wide; electronic chart correction information is directly broadcast, and the middle link is reduced in a manner of often receiving the files on the ship, the workload of sailors is reduced, and the timeliness and the accuracy of chart correction are improved.

The invention discloses a broadcast method and a mobile terminal. The broadcast method comprises the following steps of receiving a broadcast request of a terminal system; determining whether a broadcast message corresponding to the broadcast request belongs to an emergency broadcast or not based on a preset emergency broadcast list; and if the broadcast message belongs to the emergency broadcast,sending the broadcast message to an emergency queue for processing. According to the scheme, whether the broadcast message corresponding to the broadcast request belongs to the emergency broadcast ornot is determined through the preset emergency broadcast list, and the broadcast message is sent to the emergency queue for processing under the condition that the emergency message is determined tobelong to the emergency broadcast, so that the emergency broadcast can be preferentially and timely sent to the emergency queue for processing, broadcast delay of the broadcast message belonging to the emergency broadcast due to congestion of the broadcast queue is avoided, and the broadcast efficiency is improved.

The invention discloses an outdoor loudspeaker based on broadcast and movie and television technology, and relates to the technical field of broadcast and movie and television. The outdoor loudspeaker comprises a mounting body, an adjusting mechanism is fixedly mounted at the bottom of the outer surface of the mounting body, and the middle of the outer surface of the mounting body is rotatably connected with the top of the outer surface of a U-shaped plate through a short rod; the middle of the bottom end of the outer surface of the U-shaped plate is welded to the top end of the outer surface of the rotating pipe. Through the arrangement of the first motor, the U-shaped plate and the mounting body and through the mutual cooperative use of the structures, the structures such as the sound amplifying body can rotate by an angle circumferentially, and the sound generator can slowly face different directions, so that the defects caused by fixed mounting can be avoided, and the trouble caused by unclear sound hearing is avoided; therefore, the device can avoid the problem that the sound transmission efficiency is low due to the fact that the direction of the broadcast loudspeaker is fixed, and a plurality of loudspeakers do not need to be installed at the same position, so the efficiency is improved.

The invention discloses a composite message signal broadcasting method and device based on bipolar CSK modulation, and the method comprises the steps: carrying out the modulation of a basic message onan in-phase I branch, carrying out the BPSK-DSSS direct sequence spread spectrum of a serial data flow on the I branch after channel coding, and constructing an in-phase I branch baseband signal; modulating the extended message on an orthogonal Q branch, randomly taking one bit from an extended message modulation symbol after channel coding to form a serial data stream on the Q branch, forming aparallel data stream on the Q branch by other bits, carrying out BPSK-DSSS direct sequence spread spectrum on the serial data stream on the Q branch, and carrying out CSKDSSS direct sequence spread spectrum on the parallel data stream on the Q branch; wherein the two jointly construct an orthogonal Q-branch baseband signal; and carrying out carrier IQ quadrature modulation on the basic message baseband signal of the in-phase I branch and the extended message baseband signal of the quadrature Q branch to form a multi-rate composite message signal, and broadcasting the multi-rate composite message signal.

The invention discloses a data broadcasting method combing maximum degree opportunity transmission and network coding ARQ. The method comprises the following steps that a base station broadcasts a data packet; a receiving end decodes the data packet and feeds a correct decoding situation of the data packet back to the base station; the base station performs maximum degree network coding on lost original information in order to generate a network coding data packet, retransmits the network coding data packet by using maximum degree opportunity retransmission strategy, and the receiving end feeds a data packet recovered in the retransmission phase back to the base station; repeating the step 3 until all receiving ends correctly receive all data packets. The data broadcasting method guarantees that the data packet subjected to network coding may provide as many decoding opportunities as possible for the receiving ends, does not retransmit the data packet which cannot provide many decoding opportunities for the receiving ends, and retransmits the network codes in the next round. The method has characteristics of low number of average retransmission times and high broadcast efficiency and can be well used in a wireless data broadcast scene.

The invention relates to a payment data processing system based on response information, and the system comprises a receiving module which is used for receiving payment request information from a first party, the receiving module comprises a receiving unit and a sending unit, the receiving unit is used for receiving the payment request information, and the receiving unit is connected with a central control module; the sending unit is connected with the central control module, the extraction module is connected with the receiving module, and the central control module is used for constructing response information according to information in the receiving module and information extracted by the extraction module; and the broadcasting module is used for broadcasting the response information and completing processing of payment data of the first party and the second party. The central control unit constructs the response information based on the information obtained by the receiving module and the extraction module, and broadcasts the response information, so that feedback information of two transaction parties, namely the first party and the second party, is realized, the payment information processing process is further completed, and the information exchange of the two transaction parties is improved.

The invention discloses a task distribution and task delivery method, a device and a system and relates to the field of logistics storage. One specific embodiment of the task separate sowing method comprises the following steps: recommending a sowing position for an article to be separately sown so as to put the article to be separately sown on a separate sowing wall according to the sowing position; judging whether the shelving articles of the sub-sowing wall meet the type and quantity of target articles specified by the task or not, If so, binding the storage equipment identifier, the task identifier of the task and the corresponding sowing position; and determining the sowing position of the target article of the task bound to the current storage device in the sub-sowing wall, so as toput the to-be-sub-sown article of the corresponding sowing position into the current storage device according to the number specified by the bound task. According to the method, the to-be-separately-sown articles of the same type are put on the same sowing position of the separately-sowing wall, the storage equipment, the task and the sowing position are automatically bound subsequently, and thenthe target article is put into the storage equipment, so that the operation procedures are reduced, and the separately-sowing efficiency is improved.

The invention discloses an index coding based vehicle-mounted network data broadcasting protocol. The protocol is implemented by the following steps: step 1, for each transmission node, generating edge information through distributed feedback; step 2, looking for a maximum clique in the edge information; and step 3, performing index coding by applying the maximum clique, coding a message and broadcasting the message. According to the protocol, the index coding is applied to the vehicle-mounted network information broadcasting, so that more efficient information distribution is realized, a least transmission frequency can be effectively reduced, the wireless channel bandwidth is reduced, the broadcasting efficiency is improved, and the problem that broadcast information cannot correctly arrive and cannot be correctly received caused by vulnerability of a wireless channel and high mobility of a vehicle in a vehicle-mounted network in the prior art is solved.

The invention discloses a multiple-scene station search playing method. The method comprises the following steps: when the channel searching operation of the current television is finished, confirmingthe signal type of the current television signal; acquiring a channel search list of the signal type at a channel search result, and confirming a default broadcast channel of the channel search list;calling the component interface of the preset TV component manager to play the confirmed default playing channel. The invention also discloses a multiple-scene station search playing device, a computer-readable storage medium. At the time of confirming the current station searching operation, Depending on the type of signal applied to the current search operation, the default broadcast channel directly be obtained in the search channel list corresponding to the signal type in the channel search result, so as to avoid the operation of switching the tuner to broadcast the TV program after the channel search, realize the beneficial effect of simplifying the TV channel broadcast flow after the channel search, and improve the efficiency of the broadcast station.

The invention discloses a real-name verification method for an anchor identity in live broadcast. The method specifically comprises the following steps: (1) constructing a human face model and an eyebrow shape model of an anchor: separating human faces in video data to form human face model data of machine learning, and learning and further extracting the video data to make eyebrow shape model data; (2) when the third-party real-name verification system carries out verification, if the verification succeeds, ending the verification; after the verification fails, performing increased weight reasoning verification on the part above the eyebrows by using the video data, and if the verification succeeds, ending the verification; after the verification fails, verifying the eyebrow shape, and ifthe verification succeeds, ending the verification; entering the next step after the verification fails; and (3) establishing a face database of the anchor through manual confirmation, and correctinga machine learning model. The beneficial effects of the method are that the method greatly improves the recognition rate, reduces the cost of manual real-name check, and improves the broadcast starting efficiency of an anchor.

The invention relates to a multi-task intelligent voice alarm system, relates to the technical field of wireless communication, and solves the problems that arbitrary partition and grouping broadcastcontrol cannot be really realized at any time, different partition groups cannot be broadcasted at the same time according to requirements, and remote adjustment of grouping or partition broadcastingcannot be truly achieved. The system comprises a host server, a monitoring module, an RDS coding controller, a frequency modulation broadcast transmitter, an information publishing module and a loudspeaker terminal; a database is preset in the host server, and the host server receives the monitoring signal and matches the monitoring signal with the database to output a processing signal. Alarm broadcasting is carried out on all safety monitoring, arbitrary partition and grouping broadcast control at any time is achieved, and different zones can be broadcasted at the same time according to thegrouping of all the partitions according to needs; and remote adjustment of grouping or partition broadcasting is realized.

The invention discloses a limited flooding forwarding method for data packets in an unmanned aerial vehicle ad hoc network. According to the method, the forwarding delay is determined by calculating the signal-to-interference-noise ratio (SINR) when a data packet is received, and a delay forwarding queue is established in a network node, so that forwarding conflicts are reduced, and flooding is limited. The method specifically comprises the following steps: calculating delay time according to an SINR value after neighbor nodes except a source node receive a data packet; inserting the data packet into a delay queue according to the delay time; when the timer is overtime, forwarding the data packet; if the same data packet is received before timeout of the timer, deleting the data packet in the queue, and canceling forwarding at the same time. According to the method, redundant transmission during flooding of the data packet can be effectively reduced, and the purpose of improving the delivery success rate of the data packet is achieved.

The invention relates to a voice broadcast device. The voice broadcast device comprises a controller module, a voice synthesis module and a broadcast module, and the controller module and the voice module are respectively in communication connection with the broadcasting module. A turnout information request signal sent by any user handheld equipment in a target area is received through a broadcast module and sent to a controller module; and the controller module acquires turnout information locally stored by the voice broadcaster according to the turnout information request signal, then converts the turnout information into a voice format through the voice synthesis module and sends the voice format to the broadcasting module, and the broadcasting module sends the turnout information in the voice format to each user handheld equipment in a target area. Compared with a traditional turnout information broadcasting mode, the voice broadcast device has the advantages that the turnout information can be broadcasted to workers in the target area through the voice broadcaster, the problem that broadcasting is not clear due to noise in a platform when the turnout information is broadcasted manually is solved, and the turnout information broadcasting efficiency is improved.

The invention discloses a data broadcast ARQ method based on maximum-minimum network encoding. The method comprises the following steps: base stations broadcasting data packets; users decoding the data packets and feeding the correct decoding conditions of the data packets to the base station; the base stations performing maximum-minimum network encoding on lost original information to generate network encoding data packets and retransmitting the network encoding data packets, and the users feeding data packet conditions recovered at a retransmission stage back to the base stations; and repeating step 3) until all the users receive all the data packets correctly. The number of the network encoding packets formed by use of the maximum-minimum network encoding method provided by the invention is equal to the number of the lost data packets of the users losing the largest number of the data packets. Therefore, the maximum-minimum network encoding method can preferentially guarantee that the users losing the largest number of the data packets can obtain maximum network encoding gains. The method provided by the invention has the advantages of small average retransmission frequency, high broadcast efficiency and the like, thereby being able to be well applied to a wireless data broadcast scene.