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In the medium frequency voltage source paralleled inverters, the paralleled diodes in IGBTs run as rectifier before the inverter starts, and the DC capacitor could be damaged by over voltage because of the transient of the circuit. This paper analyzed the characteristics of medium-frequency inverter in parallel operation, compared to the 50Hz inverter. The simplified system model is setup, and the...
Cochlear implant is one of the most promising medical applications aiming to utmost restore deaf patients hearing. How to improve voice quality by using effectively algorithms has become a bottleneck. In our research, a new speech signal processing scheme is given based on Bark Wavelet Transform (BWT). This signal-processing strategy can non-uniformly separates the time-frequency space, which is similar...
This paper presents a configurable CONCORD platform for Multi-Project System-on-a-Chip (MP-SoC) implementation. The multi-projects platform was created for integrating heterogeneous SoC projects into a single chip. The total silicon prototyping cost for these projects can be greatly reduced by sharing the common SoC platform. A configurable SoC prototyping platform CONCORD is created as a verification...
Based on OGC Web Service (OWS) code, the article describes that a gross structure of Web-based Spatial Decision Support System (WebSDSS) is designed, and model service and data service are both encapsulated into Web Service program and registered through UDDI to form virtual model library and database respectively. Model service management system is used for searching for and managing model service;...
Embedded processors are ubiquitous in today's system-on-chip design. In addition to designing digital signal processors (DSPs) for various applications, developing efficient test methods with little overhead and desired fault coverage for DSPs are also crucial and practical. Compared with the scan-based test methods, the software-based self-test (SBST) method does not suffer from area overhead and...
Geographical GRID system is of great importance in fields such as public security, military action, emergency response etc. The homogenizing distributed geographic environment system requires the same geographical information for operations in each node. The bottle neck is how to reliably and accurately synchronize the great volume geographical data. This paper solves the problem in three ways. First,...
A novel Hybrid-Carry-Selection (HCS) approach used for deriving an efficient modulo 2n-1 addition is presented in this study. Its resulting adder architecture which is mainly built by modified carry look-ahead adder (MCLA), carry prediction unit and simple multiplexer (MUX) is simple and regular for all n values. For VLSI implementation based on 180nm standard-cell technology, the HCS-based modulo...
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