9results about How to "Fast data transfer" patented technology

The embodiment of the invention discloses a data transmission method and device based on a longitudinal encryption authentication device and a readable medium. A specific embodiment of the method comprises the following steps: carrying out dynamic identity confirmation on a target substation; generating a data transmission tunnel and transmission configuration information; carrying out data packet grouping on to-be-transmitted data packets in the to-be-transmitted data packet sequence; generating an identity verification label corresponding to the to-be-transmitted data packet group; according to the data security configuration information and the longitudinal encryption authentication device, performing data encryption on a data load in a to-be-transmitted data packet in the to-be-transmitted data packet sequence and the obtained identity verification tag sequence; and transmitting the encrypted data packet sequence to the target substation through the data master transmission tunnel, and transmitting the encrypted identity verification tag sequence to the target substation through the data slave transmission tunnel. According to the implementation, the data transmission logic is optimized, the data delay is reduced, and the data security of the data related to the power system in the data transmission process is ensured.

The application provides a CT stand, a signal transmission method of the CT stand, a CT device and a storage medium. The application can realize simple structure, low cost, low power consumption, stable data transmission and fast data transmission speed. The CT stand comprises a rotating part, an X-ray tube ball and a detector; a fixed part supporting the rotating part; a slip ring for power transmission and transmission of communication signals based on power line carrier communication between the rotating part and the fixed part; a parameter determination part for determining actual communication channel estimation parameters corresponding to the communication signals based on a channel estimation data model according to the rotating speed and rotating angle of the rotating part of the CT stand at the time when the communication signals are transmitted; and a signal transmission control part for controlling the transmission of the communication signals by modulating / demodulating the communication signals using the actual communication channel estimation parameters.

The application provides an array antenna cluster interference processing method, an electronic device and a storage medium. The method comprises the following steps: determining a virtual steering vector corresponding to a virtual interference source, and determining an interference steering vector corresponding to a previous interference source and an interference steering vector corresponding to a current interference source; determining an optimal weight vector corresponding to the previous interference source; determining an optimal weight vector corresponding to the current interference source according to the optimal weight vector corresponding to the previous interference source, the interference steering vector corresponding to the current interference source, a coefficient corresponding to the current interference source and a preset constraint condition; and determining a null level corresponding to the current interference source according to the virtual steering vector, the interference steering vector corresponding to the current interference source and the optimal weight vector corresponding to the current interference source. The application realizes accurate control of the level at a specific angle, and then realizes accurate suppression of cluster interference by a single radar.

The application provides a carrier frequency synchronization method applied to a frequency hopping data transmission system, the frequency hopping data transmission system comprising a transmitting end and a receiving end, and the method comprises the following steps: the transmitting end processes to-be-sent data into a data frame, adds a pilot head based on a ZC sequence to the data frame to form a frequency hopping data transmission frame, and sends a radio frequency signal carrying the frequency hopping data transmission frame to the receiving end; the receiving end acquires the radio frequency signal, processes the radio frequency signal into a digital signal; carrier synchronization processing is performed on the digital signal, carrier frequency scanning is performed on multiple frequency hopping points to screen effective communication frequency points; the starting position of the data frame is determined according to the effective communication frequency points, data demodulation and decoding are performed on the data frame, and original data is recovered. Through the application, the excellent autocorrelation characteristics of the ZC sequence and the intelligent double-peak detection mechanism are utilized to realize carrier frequency synchronization without strict time synchronization, and fast and anti-interference data transmission is completed.

A method at a first communication node side for wireless communication with a second communication node, at least one of the first communication node and the second communication node being in a reduced power consumption state for wireless communication related activities, the method has the following steps: transmitting a first data set to the second communication node in accordance with predefined or preconfigured control information; the control information is only arranged in a backspacing downlink control information format; or the control information is only arranged in a first simplified backoff downlink control information format; or the control information is arranged in a format selected from a plurality of fallback downlink control information formats and / or one or more second simplified fallback downlink control information formats.

The embodiment of the present application provides a data transmission method based on master-backup switching, which comprises the following steps: in the case of switching a target backup base station into a target master base station, sending reset request information to a target terminal; in the case of receiving reset completion information from the target terminal, using first communication data, second communication data and an uplink sequence number to perform data transmission on the target terminal for to-be-transmitted data. The method provided by the embodiment of the present application simplifies backup operation, saves resources for backing up the uplink sequence number, realizes fast and efficient backup, thereby further improving the efficiency of master-backup switching, and the data transmission for to-be-transmitted data can be quickly recovered.

The application discloses a Bluetooth transmission method and system, the method comprises the following steps: sending a plurality of Bluetooth data packets while detecting Bluetooth connection; after sending the Bluetooth data packet each time, judging whether the ACK response is correctly received; if yes, increasing the initial maximum transmission window of Bluetooth in response to the correct reception of the ACK response; if not, using dichotomy to find the optimal window size of the current transmission between the initial maximum transmission window and the transmission window threshold, the transmission window threshold being smaller than the initial maximum transmission window; repeatedly calculating the optimal window size of several transmissions, and determining the best Bluetooth transmission window based on the optimal window size of several transmissions for data transmission; the application can improve the efficiency of Bluetooth transmission data.

The invention provides a data transmission method and device, electronic equipment and a medium. The method comprises the steps that a command block package sent by an application in a cloud desktop is received, a command block is used for indicating a USB device to conduct read operation or write operation, and the data transmission amount in the command block package is larger than 0; sending a first command block reply packet corresponding to the command block packet to the application, and forwarding the command block packet to the USB device; if a data packet sent by the application is received and a second command block reply packet corresponding to the command block packet sent by the USB equipment is received, sending the data packet to the USB equipment; and if a data reply packet corresponding to the data packet sent by the USB device is received, forwarding the data reply packet to the application.

The invention discloses a compression representation method for fundamental wave parameters in alternating current parameters, and the method comprises the following steps: for each phase of electrical parameter of a three-phase alternating current, compressing sign bits of a real part and an imaginary part of a fundamental wave to the last 2 bits of corresponding power when a full wave is greater than a certain preset value, the sign bit of the fundamental current is compressed to the last two bits of the active power, and the sign bit of the fundamental voltage is compressed to the last two bits of the reactive power. The compression method is visual, rapid and convenient to use, and the comprehensive precision of three-phase alternating current signal measurement cannot be reduced.