63results about How to "Reduce transmission errors" patented technology

A display device is provided, including a signal transmission mechanism that makes it possible to reduce the number of pins on an FPC board connected to a TFT substrate or eliminate the necessity for the FPC board, and that can be readily applied to a compact device.The present liquid crystal display device includes light detectors, a receiver circuit, a display control circuit, a video signal line drive circuit, a scanning signal line drive circuit, and a display portion, which are formed on a TFT substrate of a liquid crystal display panel, and it also includes white LEDs, and an LED drive circuit, which are included in a backlight portion. The LED drive circuit drives the white LEDs, each emitting a light (modulation) signal LS in accordance with an externally-provided video signal VS. The receiver circuit generates (demodulates) the video signal VS based on a signal received via the light detector. Such an optical transmission mechanism makes it possible to reduce the number of pins on the FPC board or eliminate the FPC board.

A method for transmitting and receiving messages in a home appliance networking system, wherein a first home appliance connected to a network appends a unique message identification number to a header of a message and transmits the resulting message to a second home appliance connected to the network. Messages transmitted and received among a plurality of home appliances can be distinguished from one another, resulting in a reduction in message transfer errors. Moreover, as needed, a group code corresponding to a specific group of home appliances may be appended to a transmitter message for control of the specific group so that the home appliances can be conveniently and efficiently controlled at one time.

The invention relates to the field of shield machine monitoring technology, in particular to a monitoring and management method for shield machines. The method comprises the steps that S1, shield machine data on different engineering fields is collected and remotely transmitted to a field database of the engineering fields; S2, the shield machine data is extracted from the field database according to a data form in the field database and stored into a core database, data integration and data processing are performed on the stored shield machine data in combination with project data in a basic database and the field database, the operating state of the shield machines and progress of works are analyzed, and summarization is performed to generate a management data table and a data curve; and S3, the generated management data table and data curve are loaded to a display interface in the form of image-texts or lists so as to perform monitoring and management on each shield machine on different engineering fields. Therefore, construction time is shortened, a large quantity of manual links are reduced, engineering cost is lowered, working efficiency is improved, and finally real-time comprehensive intelligent management of the shield machines is realized.

The invention relates to a coding method and device and a display device, belonging to the panel manufacturing field. The method includes: encoding 8-bit data corresponding to bytes to be encoded of data to be transmitted into optional 10-bit data, wherein the data to be transmitted comprises at least one byte to be encoded; when the byte to be encoded is not the first byte of the data to be transmitted, detecting whether the first bit data of the alternate 10-bit data is the same as the first bit data adjacent to the first bit data; when the value of the first bit data is the same as that ofthe previous bit data, inverting the alternate 10-bit data to obtain the target 10-bit data; determining the alternate 10-bit data as target 10-bit data when the first bit data differs from a value ofthe previous bit data, wherein the target 10-bit data is binary data. The present application achieves compatibility of the PLL and the DLL. The present application is for channel coding of a signaltransmission system.

The invention discloses a coding method and device, a decoding method and device and a signal transmission system and belongs to the panel manufacturing field. The method comprises the following stepsof coding 8 bit data corresponding to the bytes to be coded of data to be transmitted into 9 bit data, wherein the data to be transmitted includes at least one byte to be coded; when the byte to be coded is not the first byte of the data to be transmitted, detecting the first bit data of the 9 bit data and previous bit data adjacent to the first bit data; when the value of the first bit data is the same with the value of the previous bit data, inverting the 9 bit data, and adding tenth bit data indicating that inversion operation is performed on the 9 bit data after the 9 bit data so as to obtain 10 bit data; and when the value of the first bit data is different from the value of the previous bit data, adding the tenth bit data indicating that inversion operation is not performed on the 9bit data after the 9 bit data so as to obtain the 10 bit data. In the invention, PLL and DLL compatibility is realized. The methods, the devices and the system are used for the channel coding of thesignal transmission system.

The invention discloses a method for MPPM constellation selection based on average symbol error rates in X-ray communication. The method includes the following steps of establishing an average symbol error rate model based on constellation selection, calculating the average symbol error rates under different MPPM constellation combination conditions for different MPPM constellations according to the obtained average symbol error rate model based on constellation selection, converting the constellation selection problem into the conditional constraint optimization problem, and obtaining the constellation selection scheme based on the minimum average symbol error rate condition by selecting the search strategy according to the average symbol error rate model based on constellation selection and according to the conditional constraint optimization problem. By means of the method, on one hand, the constellation selection problem is converted into the optimization problem and simplified, calculation amount is small and speed is high when search is conducted through the search strategy, and the method is suitable for engineering realization; on the other hand, constellation selection is conducted with the average symbol error rates as the standard, channel transmission accuracy is easily improved, and channel transmission errors are reduced.

The invention provides a distributed wireless meteorological encoding monitoring method, a device and a system, and relates to the technical field of meteorological monitoring. Meteorological data can be transmitted effectively in a severe meteorological environment, and the transmission efficiency is improved. The distributed wireless meteorological encoding monitoring method comprises the steps that sensor nodes perform RS (Remote Sensing) encoding encryption on the acquired meteorological data by an FPGA (Field Programmable Gate Array) chip; the encrypted meteorological data is transmitted to a monitoring station computer in a wireless manner; and the monitoring station computer is used for receiving the encrypted meteorological data, decoding the encrypted meteorological data, then performs data preprocessing and storage, and sending the data to a meteorological data center by the Ethernet. The distributed wireless meteorological encoding monitoring method is mainly used for a distributed meteorological automatic monitoring system.

The invention relates to a human-light interaction LED (Light Emitting Diode) landscape city building elevation light control system which comprises a centralized control terminal, a server terminal and a node terminal, wherein the node terminal is connected with the centralized control terminal through the server terminal; the centralized control terminal is in communication connection with the server terminal to implement linked control on the node terminal; the server terminal is used for integrating and simplifying linked control instructions transmitted from the centralized control terminal, and then transmitting the linked control instructions to the node terminal; and the node terminal is used for implementing specific linked control to switch light screens according to the linked control instructions transmitted from the server terminal. The system has the beneficial effects that graded zone control is carried out, a good linked control effect is achieved, the system is stable,high in expandability and good in human-light interaction, and multiple human-light interaction modes can be provided for users.

The invention discloses an analysis and test device for nodes in a wireless sensor network, belonging to the technical field of a wireless sensor network. The analysis and test device comprises multiple node communication modules, node power supply management and power consumption monitoring modules, on-line programming modules, processor modules, device configuration modules and node interface units. The analysis and test device also comprises graphical user interfaces and telecommunication modules which are connected with multiple nodes to be tested in a wired mode and communicate with a remote control computer in a serial-port or Ethernet mode to realize the analysis and test of the nodes in the wireless sensor network. The invention can simultaneously test and analyze multiple nodes in the wireless sensor network, and the test process does not influence the node ad hoc network and the working process; the invention can carry out on-line programming, simplified program update and program maintenance on the multiple nodes, thereby shortening the node debugging cycle; and the invention can acquire node information without depending on gateway nodes and multiple-hop transmission, thereby reducing information delay and transmission errors, and realizing accurate and fast information acquisition.

Embodiments of the present disclosure relate to data transmission in a wireless communication system. In an embodiment of the present disclosure, there are provided a method and apparatus of data transmission in a wireless communication system. The method comprises receiving information on assigned resources for the data transmission; and determining resources for respective data retransmissions based on the information on the assigned resources for the data transmission and a predetermined frequency hopping pattern. Particularly, a plurality of symbols are used to perform a radio frequency (RF) retuning and a time duration of the plurality of symbols is at least equal to a time interval required by the RF retuning. With embodiments of the present disclosure, there is provided a new solution for data transmission in which the RF retuning can be performed in a plurality of symbols, which might obtain the frequency diversity and at the same time can reduce transmission mistakes and improve the transmission efficiency.

The invention discloses an expressway weather monitoring system which belongs to the technical field of weather monitoring equipment. The expressway weather monitoring system comprises a signal collection unit and a wireless transmission unit disposed on an expressway as well as a wireless receiving unit and a monitoring center server which are disposed at a monitoring center, wherein the signal collection unit comprises a weather monitoring module, an environment monitoring module, a signal processing module and an FPGA module; and the monitoring center server comprises an RS decoding module, a data storage module and a display module. The system disclosed by the invention can improve effectiveness of transmission of weather data collected by the monitoring system in a severe weather environment.

The invention discloses a distributed weather monitoring system, which belongs to the technical field of weather monitoring systems. The distributed weather monitoring system comprises n weather monitoring subunits and a weather data monitoring center, wherein the n weather monitoring subunits are respectively connected with the weather data monitoring center; n is a natural number larger than 1; and each weather monitoring subunit comprises a weather sensor module, a signal processing module, an FPGA module, a wireless transmitting module, a wireless receiving module, an RS decoding module and a data processing module connected in sequence. Effectiveness of weather data transmission can be improved in a harsh weather environment.

A printing apparatus includes an omitting processor that performs an omitting process in which dots are not printed at one or more of the main scanning passes. The omitting processor performs the omitting process by selecting a combination of the first and second main scanning passes such that a difference between the first main scanning pass number and the second main scanning pass number is lower than for other possible combinations of the first and second main scanning pass numbers; utilizing the selected combination of the first and second main scanning passes to print the dots; and omitting at least one other possible first or second main scanning pass. Also disclosed are a printing method and computer program product.

The embodiment of the invention provides a fuzzy period length determination method, a terminal and network side equipment. The method comprises: a terminal determines a fuzzy period length, the fuzzyperiod length corresponds to a physical downlink control channel (PDCCH) processing time, or the fuzzy period length corresponding to a media access control unit (MAC CE) processing time; and the terminal determines whether to send an uplink signal at the current moment according to the received control message, and the difference between the receiving time of the control message and the currentmoment is greater than or equal to the length of the fuzzy period. According to the method of the invention, the communication performance of the wireless communication system can be improved, and unnecessary blind detection of network side equipment is avoided.

A method for managing a segment threshold includes determining whether a packet has been transmitted to a predetermined terminal, receiving from the predetermined terminal a response message indicating that the predetermined terminal has received the packet without any errors, if a packet has been transmitted to the predetermined terminal, receiving signal intensity data of a current packet transmitted from the predetermined terminal, and adjusting the segment threshold using the received signal intensity data of a current packet, if the response message has been received.

A transmitter incorporates a table (TBL1) for assigning the frame lengths of 560 μs and 600 μs to the code “0” in a binary system and assigning the frame lengths of 600 μs and 560 μs to the code “1” in the binary system. The transmitter refers to the table (TBL1) and assigns the two frame lengths of 560 μs and 600 μs and the two frame lengths of 600 μs and 560 μs to the codes “0” and “1”, respectively, in the code sequences [0,0], [0,1], [1,0] and [1,1] representing the transmission information “0” to “3” represented using the binary system, and sequentially transmits four radio signals having the assigned four frame lengths.

The invention provides an RS code-based distributed wireless meteorological monitoring method, monitoring station and system and belongs to the meteorological monitoring technical field. The objective of the invention is to solve problems of low effective transmission efficiency and low reliability of data in an existing distributed wireless meteorological monitoring system under harsh meteorological environments. The meteorological monitoring method provided by the invention includes the following steps that: a sensor node is adopted to acquire meteorological information requiring monitoring, process the meteorological information, and perform RS code encryption on the meteorological information so as to obtain encrypted ciphertext of meteorological data, and transmit the ciphertext of meteorological data to a monitoring station computer; and the monitoring station computer receives the ciphertext of meteorological data, and decodes the ciphertext of meteorological data, and thereafter pre-processes and stores the decoded ciphertext of meteorological data, and transmits the ciphertext to a meteorological data center through the Ethernet. According to the above technical scheme, an RS code mode is applied to wireless meteorological data transmission, and therefore, the RS code-based distributed wireless meteorological monitoring method has the advantages of high data transmission efficiency and high reliability.

The present invention provides a shift control device of a vehicle mounted to a body of a vehicle and having a gearbox, a shift actuator, a base, a gearshift lever, and a gearshift detector. The gearshift lever is disposed on the base. The gearshift detector is electrically connected to the shift actuator. The gearshift lever has a shift pedal, the shift pedal has a pivot portion, and the shift pedal is connected pivotally to the base by the pivot portion. The gearshift detector has a rotating element, and the rotating element is rotated coaxially with the pivot portion of the shift pedal. In the shift control device of a vehicle of the present invention, a signal wire will not be wrapped with other components, so transmission errors of mechanisms are reduced, and the structure is simple.

The invention discloses a train approaching alarm terminal for railway construction. The train approaching alarm terminal comprises a mounting housing. A circuit mounting board is provided in the mounting housing. The circuit mounting board is provided with a circuit of the train approaching alarm terminal, which comprises a LoRa communication module, an external clock module, and a microcontroller. The microcontroller receives alarm information and polling information, and processes the information, and then controls the LoRa communication module to send a polling response message. The microcontroller also outputs a control signal to control a vibrator module and a LED module for alarming. The microcontroller also controls a communication module and a data collector to establish a connection relationship for data collection and upload, and synchronizes time through the data collector and a background supervision platform. The terminal solves many uncertainties caused by the communication environment and distance factors on the communication of walkie-talkies in the current railway construction. As a result, the timeliness of the train approaching alarm is improved, the false alarmrate of the train approaching alarm is reduced, the informationization degree of the field railway protection is improved, and the waste of human resources is reduced.

The invention discloses a single-chip microcomputer upgrading method, a single-chip microcomputer and a storage medium, the single-chip microcomputer upgrading method comprises the following steps: monitoring and receiving an upgrading command and an upgrading sub-file of a serial port or an internet access, wherein the upgrading sub-file is obtained by slicing an upgrading file, and the upgrading sub-file comprises first verification information; verifying the data of the upgrading sub-file to obtain second verification information; and when the first verification information is consistent with the second verification information, sending a success instruction to an upper computer and storing the upgrading sub-file in an upgrading program partition. According to the single-chip microcomputer upgrading method, the problems of upgrading errors and error codes in the transmission process can be effectively reduced, and remote upgrading is supported.

In a wireless communications system in which a mobile node seeks a communication session with a correspondent node by first signaling for initialization of the communication session through a first data path via an intermediate node. Thereafter, contents of the communication is established through a second data path in which the mobile node and the correspondent node communicate straightforwardly without going through the intermediate node.

The invention provides a distributed MU-MIMO channel estimation algorithm and a transmission method in a LoRa uplink system, and the method comprises the steps: when signals y transmitted by K nodes arrive at a receiving end at the same time, enabling the receiving end to firstly detect a lead code in the received signals, and after the lead code is detected, continuously detecting whether symbol edges of different nodes are aligned or not; when symbol edges are aligned, calculating a pre-stored Hadamard matrix order K', enabling the chiirp symbol number N in the signal y to be equal to K', sampling the signal y at a sampling rate B / 2SF, traversing a Hadamard sequence, and multiplying the Hadamard sequence by each signal to solve hji; when symbol edges are not aligned, starting the sampling at a sampling rate B / 2SF, and establishing an equation to solve hji. The number of unknown numbers in a transmission equation is reduced through a special sampling rate, a method for solving channel information is provided based on a Hadamard sequence, and mixed signals are separated by adopting a channel equalization algorithm after the channel information is acquired, so that the problem of realizing MU-MIMO transmission in the same-frequency asynchronous transmission LoRa network is solved.

This document relates to a method capable of reducing transfer errors of a sled motor for moving an optical pickup to the outer circumference when labels are recorded on a disc. An optical disc recording method may comprise checking a step pattern having a small transfer error in the sled motor, and recording labels on a label plane of an optical disc while driving the sled motor based on the checked step pattern. Step patterns can be classified based on a structure of the sled motor or a unit for driving the sled motor. The step patterns having a small transfer error can be detected in a process of manufacturing an optical disc apparatus and stored in memory of the optical disc apparatus.

The invention discloses an SPI asynchronous communication scheduling method and device, equipment and a storage medium. The method comprises the steps that when an asynchronous transmission task is detected, calling an in-column operation instruction to put a task number corresponding to the asynchronous transmission task into a task queue, and adjusting the task state to be a waiting state; when the periodic trigger signal is received, calling a column-out operation instruction to obtain a target task number and a target task state corresponding to the to-be-transmitted task from the task queue; when the target task state is a waiting state and the current SPI transmission channel is in an idle state, entering an execution state; and executing an SPI asynchronous transmission operation on the to-be-transmitted task according to a target execution function corresponding to the target task number. Through the above mode, scheduling management can be performed on a plurality of SPI asynchronous transmission requests generated in a short time, so that transmission errors are reduced, SPI asynchronous communication is realized, and time delay in a communication process is reduced.

A method, base station, and terminal employing time division duplex and carrier aggregation are disclosed. The method by the base station includes transmitting, to a terminal, scheduling information on a control channel of a first cell, and transmitting, to the terminal, data on a shared channel of a second cell based on the scheduling information. The scheduling information is transmitted in a first downlink subframe or a first subframe including downlink pilot time slot (DwPTS) based on first subframe configuration information of the first cell. The data is transmitted in a second downlink subframe or a second subframe including DwPTS corresponding to the first downlink subframe or the first subframe. The first subframe configuration information of the first cell is different from second subframe configuration information of the second cell.