32results about How to "Implement dynamic changes" patented technology

The invention discloses a dynamic adaptive code rate selection method based on a MPEG-DASH (MPEG-Dynamic Adaptive Streaming over HTTP) protocol. The dynamic adaptive code rate selection method comprises the steps of: firstly, establishing a HTTP connection between a server and a client; by the client, sending a HTTP Get request to the server, requesting to download a MPD file and storing the MPD file; after the server receives the request of the client, by the server, responding to the client and sending the MPD file, and by the client, downloading the MPD file and parsing the downloaded MPD file; according to an URL address obtained by parsing the MPD file, firstly downloading one part of a slice at the minimum code rate, placing the slice into a cache region, carrying out calculation, statistics and recording on a network bandwidth when the video slice is downloaded, and predicting a network bandwidth when a next video slice is downloaded; and by combining a current residue condition of video slices of the cache region, selecting a code rate for downloading the next video slice until the end. An effect of improving video quality to the greatest extent in the premise of smoothly carrying out playing is achieved, and viewing experience of a user is greatly enhanced.

This invention discloses a relay amplification device with the TR control function including: a coupling unit and a working state control unit, in which, the coupling unit couples the RF signals from the base station to a first TR switch unit and a working state control unit separately, which controls the conduction of the up-link of the relay amplifying device based on the RF signal received from the base station, its power amplification, cut-off and close of the power amplifier of the down-link or controls the down-link conduction and its power amplifier, the cut-off of the up link and shut of its power amplifier, besides, this invention also provides a control method for TR signals of the relay amplification device.

The invention discloses an electronic commerce implementation method and system based on a grid, and belongs to the technical field of geographic information and electronic commerce. The method is based on the following scheme: on the basis of obstacle characteristics including population density, areas of region, streets, rivers and the like, generating the grid, and injecting a positioning function and electronic commerce functions including publishing and the like for the grid, wherein the grids are associated and cover a certain region; utilizing a grid positioning tool to position the grid where a merchant is positioned, and on the basis of own abilities, utilizing a grid publishing tool by the merchant to select one or a plurality of grids to publish own stores to realize the association of the merchant and the grid; utilizing the grid positioning tool by a buyer to position the gird where the merchant is positioned to realize a purpose that the store, the commodity or service in the grid are visible; and carrying out transaction by the merchant and the buyer through the electronic commerce on the grid. The method can be used for the fields including the electronic commerce and the like.

An embodiment of the invention discloses an Android animation execution method, a device, a terminal and readable medium. The method includes receiving a target value change message, defining an end value of a second animation according to the target value change message, defining a start value of the second animation according to the end value of the first animation, and setting an open value ofthe second animation according to the start value of the second animation, wherein the open value of the second animation is smaller than the start value of the second animation; Invoking an animationconstruction method to construct a second animation according to a start value of the second animation and an end value of the second animation; The first animation listening function is called to determine the execution animation value of the first animation, and when the execution animation value is equal to the start value of the second animation, the animation start method is called to startthe second animation. The embodiment of the invention provides an Android animation execution method, a device, a terminal and a readable medium, which realize the dynamic change of the animation target value in the animation execution process, enable the animation execution to be more smooth, and improve the user experience.

The invention provides a method for realizing automatic zoned constant pressure in field rotation irrigation by utilizing a frequency converter, and belongs to the field of automatic control on large-scale irrigation. According to the method, on the basis of an existing variable-frequency speed-regulation constant-pressure irrigation system, the frequency converter is connected with a communication module by using a frequency converter serial port in a wired manner; the frequency converter is configured to be in a serial port communication state; the frequency converter is controlled by a communication interface; the communication module is connected with remote configuration software; and the configuration software reads pressure configuration information, and remote configuration is performed with the cooperation of the executing process of a rotation irrigation unit through the communication module to realize a dynamic change to keep pressure constant. The method solves the problemthat control over water supply pressure of large-area irrigation is not reasonable.

The invention discloses a micro-service-based back-end splitting strategy, and relates to the technical field of micro-service splitting. The micro-service is split into an upper side and a lower sidewhich comprise a portal layer and a core layer; the portal layer provides an interface for the outside and is used for receiving an input parameter called by the interface, returning processing dataand performing simple service logic processing; the core layer is a base layer, is responsible for main service logic processing, provides support of a portal layer interface for calling of a lower layer interface, and is responsible for interaction with a database. According to the method, the micro-service is split into the portal layer and the core layer, so that the micro-service becomes lighter and thinner in structure, and overall maintenance, upgrading and reconstruction of the system are better facilitated; the core layer serves as a base layer, the interface can provide rich and comprehensive data, the portal layer can be changed and packaged into different interfaces according to needs, and dynamic change of the portal layer is achieved.

The invention relates to a method and system for changing extension display identifier data information. The method comprises the following steps: firstly obtaining attributes and attribute parameters of to-be-modified contents, searching an address of the to-be-modified contents in the extension display identifier data information according to the attributes of the to-be-modified contents, then when extension display identifier data corresponding to the to-be-modified contents can be modified, converting the attribute parameters of the to-be-modified contents into binary numerical values according to an extension display identifier data standard, writing the binary numerical values in the address corresponding to the extension display identifier data, and supplementing the extension display identifier data information to obtain the changed extension display identifier data information. By adoption of the method and system for changing the extension display identifier data information, the extension display identifier data information can be modified dynamically, and users can conveniently modify the extension display identifier data information.

The invention discloses a switching value acquisition circuit and method. The circuit comprises a control power supply state detection loop, an MCU signal acquisition control loop and at least one switching value acquisition loop. The switching value acquisition loop comprises a main acquisition optocoupler and an auxiliary acquisition optocoupler; and the MCU signal acquisition control loop is used for responding to the level signal detected by the control power supply state detection loop, controlling to disconnect the auxiliary acquisition optocoupler to acquire the switching value signal only through the main acquisition optocoupler, or controlling to start the auxiliary acquisition optocoupler and the main acquisition optocoupler to acquire the switching value signal together. According to the invention, different power supply voltage levels can be controlled; one group of optocoupler outputs or two groups of optocouplers are selected in parallel to output; the transmission gain of an acquisition loop is dynamically changed by acquiring the voltage of a control power supply, noise suppression thresholds required by different control power supply voltages can be met, the reliability of a circuit system is improved on the basis of the design of a passive device on a high-potential side, and meanwhile, the engineering debugging cost is reduced.

A method for controlling a transmitter, comprising: awaking and initiating the transmitter by a trigger signal generated by a timer; detecting whether the transmitter receives an input control parameter from outside of the transmitter, and if yes, updating an input control parameter stored in the transmitter by using the received input control parameter; reading the input control parameter currently stored in the transmitter; performing operations based on the read input control parameter so as to control the transmitter to select one sensor signal from a plurality of sensor signals, amplify the selected sensor signal with a gain within a first gain range, and output the amplified sensor signal; and after determining that the transmitter has accomplished a task specified by the read input control parameter, resetting the timer, and entering into a sleeping state until the timer generates the trigger signal.

The present disclosure discloses a transmitter and a monitoring system using this transmitter, the transmitter includes: a multi-to-one multiplexing switch configured to receive a plurality of sensor signals of a plurality of channels through a plurality of input terminals, select one sensor signal from the plurality of sensor signals, and output the selected sensor signal through a output terminal; a first variable gain amplifier configured to receive the selected sensor signal, amplify the selected sensor signal with a gain within a first gain range, and output the amplified sensor signal; a control parameter input terminal configured to receive an input control parameter from outside of the transmitter; and an operating and switching selector configured to perform operations according to the input control parameter, so as to control the multi-to-one multiplexing switch to select the one sensor signal and control the gain of the first variable gain amplifier.

The invention relates to a service monitoring system and method based on random numbers, including a distributed random number generator for generating random numbers, combined with the connection relationship between monitoring nodes and monitoring and management servers, through a hash-based message authentication code algorithm HMAC Complete monitoring node identity authentication and monitoring node collection and reporting of monitoring information. The present invention utilizes the characteristics of the distributed random number generator to effectively solve the problem of the security identification of the monitoring node by the monitoring management server and prevent replay attacks. Effectively limit the rate, thereby improving the security of the service monitoring system and improving the efficiency of collecting information and reporting.

The invention provides a video data processing method and a video data processing system. The video data processing method is characterized in that whether a current first video instruction is to-be-processed video data can be determined; when the first video instruction is the to-be-processed video data according to the determining result, a second object can be acquired according to the first object of the first video instruction; a second video instruction can be generated according to the first video instruction and the second object; the second video picture corresponding to the second video instruction can be drawn according to the second video instruction. By adopting the technical scheme provided by the invention, the problem of the prior art of the inability of dynamically changing the object of the video picture can be solved.

The invention relates to the field of lake management, in particular to a lake management system based on a LoRa technology, which comprises ecological environment monitoring nodes arranged around a lake area and a management terminal communicated with the ecological environment monitoring nodes through a LoRa-based wireless sensor network, the ecological environment monitoring nodes are fixedly arranged in a lake basin to be monitored based on monitoring anchor rods, the ecological monitoring nodes in the same monitoring basin form different monitoring rings based on preset monitoring targets, and lake ecological environment parameters are collected; data collected by the ecological environment monitoring nodes are transmitted to the management terminal through the LoRa-based wireless sensor network, and a corresponding lake state analysis report is generated and transmitted to the remote server in real time after being analyzed and processed by a built-in data processing system. According to the invention, online continuous automatic monitoring analysis of the lake ecological environment can be realized, the data visualization degree is high, and managers can find abnormal conditions in the lake ecological environment in time.

The invention provides a cloud integrated Wi-Fi equipment ad-hoc networking method, and belongs to the technical field of protocol communication control. The method comprises the following steps that:S100, a cloud server specifies a server under an SSDP protocol, specifies a client under the SSDP protocol, completes topological structure configuration of the Internet of Things, generates configuration information, and pushes the configuration information to a Wi-Fi router through the Internet, wherein the configuration information comprises at least one stage of topology structure layer of the Internet of Things, and a superior Internet of Things node identifier and a plurality of subordinate Internet of Things node identifiers correspondingly associated with the superior Internet of Things node identifier are specified in each stage of topology structure layer; and S200, when the server is offline or the server is updated, the cloud server re-designates one networking device as a newserver. According to the scheme, the dynamic change of the identity of the equipment in the network can be realized, the ad-hoc networking among a plurality of pieces of equipment is facilitated, theflexibility is improved, and meanwhile, the network paralysis caused by offline of the server is avoided.

The network data encryption and decryption device comprises a first key generation unit, an encryption unit, a second key generation unit and a decryption unit, the first key generation unit is used for extracting a feature field in the message, generating a first key according to the feature field and outputting the first key to the encryption unit; the encryption unit is used for encrypting a transport layer load of the message by using the first key according to an encryption algorithm agreed between the source address and the destination address, and transmitting the encrypted message to a network; the second secret key generation unit is used for extracting a feature field from the network message to form a second secret key and outputting the second secret key to the decryption unit; and the decryption unit is used for decrypting the transport layer load of the message from the network by using the second key according to a decryption algorithm agreed between the source address and the destination address, and outputting the decrypted message to the application equipment of the destination address. The encryption and decryption key used in the invention realizes dynamic change, the security is improved, and the cost is low.