33 results about "Effective data transfer rate" patented technology

Multi-drop communications channels can have significantly deep notches in their frequency response causing a corresponding limitation of the effective data transmission rate. A special time-ordered coding method is described which results in the emitted spectrum of the data stream transmitted into the channel having a notch at the same frequency as the notch in the channel frequency response, permitting channel receivers to successfully decode the transmitted data stream. The described coding method may be applied at various multiples of the channel notch frequency to support different throughput rates, and may be combined with other coding techniques such as group or vector signaling codes.

In accordance to one aspect, a method for optimizing the effective data transmission rate in a bus system, in particular in automation technology is provided. A data telegram used in higher-order data networks based on the Internet protocol, with at least one data telegram, at least one data segment and / or at least one data section being generated and / or modified and / or deleted by at least one slave. The topology of the bus system can hereby be selected according to the application and is taken into account in the configuration of the data contained in the data telegrams, without infringing the protocol characteristics of the higher-order data network. The number of data telegrams required is hereby significantly reduced, in particular on communication links with maximum loading.

This invention provides a data transfer device, data transfer system, and data transfer method.a transfer start / end detecting section detects timing at which a DMARQ signal becomes an H level or an L level. A transfer time-measuring section measures a transfer time during which data transfer is actually performed within a period in which a predetermined number of data blocks are transferred. A transfer byte count-measuring section measures a transferred byte count of data that have successfully been transferred. An effective data transfer rate-computing section computes an effective data transfer rate by dividing the transferred byte count by the transfer time. A transfer rate-comparing section compares the effective data transfer rate with a transfer rate that is one step slower than a current transfer rate output from a selectable transfer rate-storing section. If the former is slower, a transfer rate-switching section switches to the transfer rate that is one step slower. A large decrease in the effective data transfer rate caused by data corruption is prevented.

The invention discloses a system and a method for executing data transferring rate adjustment to improve the effective data transfer rate of a serial ATA storage apparatus. When the data is transferred, the insertion of an ALIGN primitive element reduces the data transferring rate. A receiving device only abandons the ALIGN primitive element. Thus a receiving data First-In First-Out (FIFO) is not filled in and a flow control sequence with less flow control demand prevents the data FIFO from overflow. The advantage of the ALIGN primitive element instead of the conventional flow control is that the ALIGN does not cause a roundtrip signal switching delay and discontinuation and later starts the data transfer.

The invention discloses a system and a method for executing data transferring rate adjustment to improve the effective data transfer rate of a serial ATA storage apparatus. When the data is transferred, the insertion of an ALIGN primitive element reduces the data transferring rate. A receiving device only abandons the ALIGN primitive element. Thus a receiving data First-In First-Out (FIFO) is notfilled in and a flow control sequence with less flow control demand prevents the data FIFO from overflow. The advantage of the ALIGN primitive element instead of the conventional flow control is thatthe ALIGN does not cause a roundtrip signal switching delay and discontinuation and later starts the data transfer.

This invention provides a data transfer device, data transfer system, and data transfer method.a transfer start / end detecting section detects timing at which a DMARQ signal becomes an H level or an L level. A transfer time-measuring section measures a transfer time during which data transfer is actually performed within a period in which a predetermined number of data blocks are transferred. A transfer byte count-measuring section measures a transferred byte count of data that have successfully been transferred. An effective data transfer rate-computing section computes an effective data transfer rate by dividing the transferred byte count by the transfer time. A transfer rate-comparing section compares the effective data transfer rate with a transfer rate that is one step slower than a current transfer rate output from a selectable transfer rate-storing section. If the former is slower, a transfer rate-switching section switches to the transfer rate that is one step slower. A large decrease in the effective data transfer rate caused by data corruption is prevented.

The invention relates to a hydraulic support frame data collecting method, a hydraulic support frame data collecting system and a hydraulic support frame centralized control system. The hydraulic support frame data collecting method comprises the following steps of: obtaining the number of a located hydraulic support frame of a coal mining machine; determining the number of an adjacent hydraulic support frame of the coal mining machine according to the number of the located hydraulic support frame of the coal mining machine; and collecting the support frame information data of the hydraulic support frames according to the number of the located hydraulic support frame of the coal mining machine and the number of the adjacent hydraulic support frame of the coal mining machine. The support frame information data of the located hydraulic support frame and the adjacent hydraulic support frame of the coal mining machine are collected, and the polling of the data of all of the hydraulic support frames is not needed, so that a remote control center can timely obtain the effective hydraulic support frame data; the effective data transmission speed of the remote control center and a fully mechanized coal mining face is accelerated; meanwhile, the effective data transmission effect is accelerated, so that the operation speed of the coal mining machine can be properly accelerated; the automatic mining efficiency is further improved; and the hydraulic support frame data collecting method, the hydraulic support frame data collecting system and the hydraulic support frame centralized control system can be widely applied to the automatic mining field.

The invention belongs to the technical field of radar, and relates to a CE-OFDM-based integrated radar communication system. The present invention proposes a CE-OFDM-based super-resolution radar communication integration solution through communication information compensation that can improve the effective data transmission rate and solve the problem of excessively high PAPR of OFDM signals based on the traditional OFDM communication radar integration solution. The sending end firstly converts the data to be sent into a CE‑OFDM symbol frame through QAM modulation, IFFT transformation and phase modulation, and replaces a single pulse in a pulse repetition period with a frame of CE‑OFDM symbols, thereby increasing the data transmission rate and solving the problem of Send signal PAPR too high problem. At the receiving end, after demodulating the received waveform pulse, the signal can be demodulated by the reverse process of the CE-OFDM system transmission process, and the data can be demodulated; and since the transmitted waveform is known, the pulse compression processing is performed on the received echo, and the communication After information compensation, the super-resolution estimation of the distance and speed of the target can be completed through decoherence processing and MUSIC algorithm.

The invention discloses a real-time online simulation system of an MMC type high-voltage frequency converter based on RT-Lab and WiGig. The system includes a host computer, a target machine, a controller, an MMC type high-voltage frequency converter, and a WiGig wireless communication module. The communication specification of the WiGig wireless communication module adopts the G.hn standard. Collect the output signal of the MMC high-voltage inverter control unit through the RT-LAB simulator, realize the capacitor voltage balance control and modulation of the MMC high-voltage inverter rectifier side and the inverter side converter, and simulate the MMC high-voltage inverter in real time The real-time wireless signal interaction between the real equipment of the control unit realizes the simulation control of the MMC type high-voltage inverter. The invention effectively improves the data transmission rate among various components in the system, provides a large amount of technical reference data for the real-time control of the MMC type high-voltage frequency converter, and can greatly shorten the research and development cycle and cost of the MMC type high-voltage frequency converter.