Abstract:In this paper, we propose a scalable distributed memory system with a low-cost hardware message-passing interface. The proposed interface improves the communication performance between nodes to decrease the overhead synchronization with a receiver reservation technique. The simulation results indicate that the performance is increased by 20% on 4x4 communications. The synthesis result of the proposed MPI indicates that the area was only 4.49% of each computing node. As a result, the proposed system is a useful embedded MPSoCs (Multiprocessor System on a Chip) for its low-cost implementation and scalability.

SUMMARYIn this letter, we evaluate the parasitic capacitance of an LCD touch panel, the description and implementation of a differential input sensing circuit, and an algorithm suitable for large LCDs with integrated touch function. When projected capacitive touch sensors are integrated with a liquid crystal display, the sensors have a very large amount of parasitic capacitance with the display elements. A differential input sensing circuit can detect small changes in the mutual capacitance from the touch of a finger. The circuit is realized using discrete components, and for the evaluation of a large-sized LCD touch panel, a printed circuit board touch panel is used.

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Single error correction, double error detection and double adjacent error correction (SEC-DED-DAEC) code without mis-correction of double non-adjacent error is proposed to achieve high reliability protection against soft errors in on-chip memory systems. To eliminate mis-correction among information bits, the orthogonality of orthogonal Latin square codes is engrafted in the Hmatrix of the proposed code. Experimental results show that there is no mis-correction for the proposed code and the overhead of implementation is lower than that of other SEC-DED-DAEC codes. The proposed SEC-DED-DAEC code is suitable for applications to on-chip memory with high reliability.

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