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44results about How to "Reduce connection complexity" patented technology

Non-blocking extended system and method based on multiple non-intersected unidirectional fiber ring networks

The invention discloses a non-blocking extended system and method based on multiple non-intersected unidirectional fiber ring networks, and the system comprises an input stage, a central stage, and an output stage, wherein the input stage and the output stage respectively consists of a space division switching modules. The central stage consists of a plurality of non-intersected wavelength division switching modules comprising unidirectional fiber ring networks, and allows any mapping from input to output. The connection of unidirectional fiber rings of the central stage accords with the basic features of a Clos network, and the central stage is in one-one connection with the input and output stages through fiber ports. The number n of module ports of the input is consistent with the number n of module ports of the output stages, wherein n is not greater than the number M of switching modules of the central stage. The invention also provides a specific implementation method for completing the non-blocking extension through employing the system. The method and system increase the network capacity efficiently at low cost, employs all fiber link resources flexibly and effectively, improve the utilization rate of wavelength resources in a network, reduce the blocking rate of the network, and facilitate the implementation of a high-performance optical network in the future.
Owner:SHANGHAI JIAO TONG UNIV

Two-dimensional code-based transaction method and system

The invention provides a two-dimensional code-based transaction method and a two-dimensional code-based transaction system. The method comprises the steps of receiving a first request from a first acceptance mechanism, wherein the first request is generated based on a two-dimensional code, and the two-dimensional code is generated by a second acceptance mechanism; obtaining a second request basedon the first request, wherein the second request includes an account mechanism of a payer, account information of the payer, account information of a payee and deduction amount information; and sending the second request to the account mechanism of the payer. In the two-dimensional code-based transaction method and the two-dimensional code-based transaction system, through indirection connection between the acceptance mechanism and the account mechanism, the indirection connection of different payment systems is realized, the connection complexity between multiple payment systems can be effectively reduced and the cost is lowered; and meanwhile, through the indirect connection, the two-dimensional codes of the unconnected payment systems can be recognized, thereby realizing a two-dimensional code-based payment transaction.
Owner:LAKALA PAYMENT CO LTD

Computer series course experimental platform device based on dynamic part reconfigurable FPGA

The invention relates to a computer series course experimental platform device based on a dynamic part reconfigurable FPGA. The device comprises a hardware circuit system and a PC. The hardware circuit system comprises a dynamic part reconfigurable FPGA module, a clock module, an input module, a displaying module, a communication interface module and a power supply module. The dynamic part reconfigurable FPGA module comprises a control module, a storage module and an experimental area module. The clock module and the input module are connected with the I / O of the FPGA directly. The displaying module is connected with the I / O of the FPGA through a buffer. Parts of functions in the dynamic part reconfigurable FPGA can be changed dynamically during system working operation, and the fact that the functions of other parts are not affected is guaranteed. According to the computer series course experimental platform device, the connecting line complexity of a computer combination principle and a system structure experimental platform hardware circuit can be effectively lowered, occupied space is saved, system stability is improved, and improving and upgrading of the experimental platform can be well achieved.
Owner:SHANDONG UNIV

Energy balance based series-wound lithium battery pack protection apparatus

The invention relates to the technical field of lithium battery pack management equipment, and specifically discloses an energy balance based series-wound lithium battery pack protection apparatus. The protection apparatus is characterized in that the protection apparatus is provided with a controller, an energy equalization circuit connected with the controller and a protection circuit connected with the controller; the energy equalization circuit comprises a voltage sampling circuit, a rectifying filter circuit, an A/D switching circuit, and an equalization switch circuit; the voltage sampling circuit collects the voltage value between adjacent two serially-connected single lithium batteries; the output end of the voltage sampling circuit is connected with the rectifying filter circuit; the output end of the rectifying filter circuit is connected with the controller through the A/D switching circuit; the control end of the equalization switch circuit is connected with the controller; and the equalization switch circuit is serially connected between the adjacent two single lithium batteries that are in mutual series connection. Compared with the prior art, the energy balance based series-wound lithium battery pack protection apparatus has the obvious advantages of reasonable structure, stable operation, capability of effectively improving the operation safety of the lithium battery pack, and the like.
Owner:HEFEI GUOSHENG BATTERY TECH

High-performance and low-complexity LDPC decoder based on randomized computation

The invention belongs to the technical field of wireless digital communication and broadcasting, and particularly provides a high-performance and low-complexity LDPC decoder based on randomized computation. The decoder supports an IEEE802.16 (WiMAX) standard and structurally comprises a look up table (LUT) array of NDS coefficients suitable for a (576 and 480) check matrix in the IEEE802.16 (WiMAX) standard, a VN array with the EM initialization function and a saturating counter with computation posteriori information and SM. An information spreading decoding algorithm based on randomized computation is adopted in the decoder, and the wiring complexity of the decoder can be effectively lowered and the area utilization rate of a chip can be increased while the requirement for a current communication standard throughput rate is met; meanwhile, the decoder selects proper NDS parameters and improves a randomized computation hardware structure according to the specific check matrix, initialization time is shortened, the convergence speed is increased, the decoding performance of randomized computation of the decoder is improved, decoding time is shortened, and the throughput rate is increased.
Owner:FUDAN UNIV

Multi-interface high-speed optical fiber transmission device and method

The invention discloses a multi-interface high-speed optical fiber transmission device and method. The multi-interface high-speed optical fiber transmission device comprises a digital signal processing module, an optical module, an optical fiber cable and a data processing server, the digital signal processing module is used for completing digital beam forming and parameter measurement of the received baseband signal; a result of the signal processing module is accessed to a data processing server through an optical module and an optical fiber cable for further signal identification; the optical module completes electro-optical conversion between the electric signal sent by the digital signal processing module and the optical signal transmitted in the optical fiber cable, and photoelectric conversion between the optical signal transmitted in the optical fiber cable and the electric signal received by the data processing server; according to the invention, on the premise of not changing the architecture of the back-end data processing server, the receiving front-end module is expanded; and meanwhile, on the premise of not losing data, multiple channel outputs are combined into one channel for transmission, so that the system redundancy is reduced, the hardware resource utilization rate is improved, and the hardware cost and the system unit design complexity are effectively reduced.
Owner:CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST

Non-blocking expansion system and method based on multiple disjoint unidirectional optical fiber ring networks

A non-blocking expansion system and method based on multiple disjoint unidirectional optical fiber ring networks, the system includes three stages: an input stage, an intermediate stage and an output stage, wherein both the input stage and the output stage are composed of space division switching modules; The intermediate stage is composed of multiple disjoint WDM switching modules including the unidirectional optical fiber ring network, allowing arbitrary input-to-output mapping; the connection of the intermediate stage unidirectional optical fiber ring conforms to the basic characteristics of the Clos network, and is logically consistent with the input The output stages are connected one by one through optical fiber ports; the number n of the input and output stage module ports should be consistent, and the number should not be greater than the number M of the intermediate stage switching modules. At the same time, a specific implementation method of using the system to complete non-blocking expansion is provided. The invention increases network capacity at low cost and high efficiency, flexibly and effectively utilizes all optical fiber ring link resources, improves the utilization rate of wavelength resources in the network, eliminates network blocking rate, and is beneficial to the realization of future high-performance optical networks.
Owner:SHANGHAI JIAOTONG UNIV

Multi-guiding signal conversion device

The invention discloses a multi-guiding signal conversion device, which comprises a conversion box body, at least one 25-pin parallel interface and at least one Bnc interface array group, wherein a containing space is arranged in the conversion box body; the 25-pin parallel interface is arranged on the back panel of the conversion box body; the Bnc interface array group is arranged on the front panel of the conversion box body; the amount of the Bnc interface array group corresponds to the 25-pin parallel interface; each Bnc interface array group comprises a plurality of rectangular-arrangement Bnc interfaces; the Bnc interfaces are connected to the corresponding pin of the corresponding 25-pin parallel interface; and the ground wire of each Bnc interface of the Bnc interface array group is connected to the 25th pin of the corresponding 25-pin parallel interface. By use of the multi-guiding signal conversion device, connection interface diversification is realized so as to adapt to theconnection use requirements of equipment of different form specifications, meanwhile, signal triggering synchronization is realized, and systematized use efficiency is greatly improved.
Owner:JIANGHAN UNIVERSITY
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