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Certain hard real-time tasks demand precise timing of events, but the usual software solution of periodic interrupts driving a scheduler only provides precision in the millisecond range. NOP-insertion can provide higher precision, but is tedious to do manually, requires predictable instruction timing, and works best with simple algorithms. To achieve high-precision timing in software, we propose...
In this paper, we proposed a processor architecture that is suitable for next generation embedded applications, especially for personal information devices such as smart phones, PDAs, and handheld computers. Latest high performance embedded processors are developed to achieve high clock speed. Because increasing performance makes design more difficult and induces large overhead, architectural evolution...
In this paper, we proposed an image sharing method adopting (t, n) threshold scheme. The secret image goes through Vector Quantization (VQ) scheme and permutes the locations of indices to obtain permuted indexed secret image. We select t indices to form a (t-1)-degree polynomial by taking t indices as its coefficients. Then, the values of blocks’ indices in cover image are fed into the (t-1)-degree...
Event-driven, embedded applications that embody the composition of many disparate components are emerging as an important class of pervasive applications. For such applications, realizing solutions often requires a breadth of expertise. Consequently, managing the solution life cycle can be a very complex, time-intensive process. In this paper, we present a framework that eases the complexity of managing...
ASIPs are designed specifically for a particular application or a set of applications. Their instruction sets must be carefully tailored to provide high performance as well as to meet non-functional constraints such as silicon area and power consumption. Traditionally, evaluation of different candidate instruction sets is all carried out through simulation. However, the growing design complexity and...
Previous research shows that there are two architectures for speech-to-speech translation (S2ST) system implementation. One is client-server based systems that should be built on the server computer but not available anytime or anywhere. The other is to build portable stand-alone devices but lacks the real-time performance. Therefore, this work presents an embedded system design for portable S2ST...
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