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FPGA offers major advantages when using them forcryptographic applications. It is effective way to useFPGA as a cryptographic engine co-operating withgeneral-purpose CPU system to implement cost-efficientsecurity systems. In this paper, we implement a encryptsystem using Xilinx virtex-4 FPGA device. The core of thesystem is two widely used cryptographic algorithm core:SHA256 and AES128. These two...
The area of robots contains various kinds of computing requirements. For motion planning or path finding, one of the key issues is to implement the mechanism of collision detection for avoiding contact in the robot trajectory between the robot and surrounding objects. Based on some basic geometric models, this paper presents the preliminary analysis for collision detection at first, and then envelopes...
Wireless Sensor Networks have been researched for years. The paper analyzes the implementation for environmental monitoring from both the hardware and software aspects. The framework of the programming in TinyOS-2.x has also been mentioned. Then we describe the data collection module in two ways, single-hop and multi-hop networking. The article presents the details of the implementation and describes...
Backpacking seeks the most amusement of travel only with small amount of money. Low-cost airlines help to gain this goal with the implementation of B2C e-commerce. In current Web society, backpackers can communicate with each other more than before, and there are much more information about low-cost airlines in the Web. Therefore, now the Web helps backpackers a lot to achieve low-cost airlines to...
In the paper, a novel network communication model based on Cell, which is a multi-core processor system, is presentment. And the I/O data transmission performance of the novel system will be showed in the paper too. In order to meet the high computation capacity request, the multicore platform has been adopted in the software radio system. But the research result presents that the data I/O transmission...
The paper will present a new intensive-computing environment for education. The environment is different from the conventional high-performance platforms which are very expensive and isnpsilat fit for normal education, especially from the poor area. It adopts Cell system to build low level cluster, and the operating system for the cluster is Gentoo Linux OS, and the Cell SDK is used to build the development...
Multi-function solar-wireless network server is adding solar and WLAN together. The most important development technology for multi-function solar-wireless network server is using solar energy to be the power supply and customized multi-function wireless net services. With all of this the purpose is giving us an easy using, cheap, clean and convenient wireless net server. In the paper, we will show...
In the past decade researchers have been interested in building system based on the open source software (OSS) or commercial-off-the-shelf (COTS) more and more. Since most of functions are provided by the OSS/COTS how to choose the suitable components has to be the first issue. Now there are some models targeted this problem but we think most of existing models are impractical. Finally, in this paper...
In the paper, a new parallel LZW-Like algorithm, bi-directory LZW algorithm (BD-LZW) will be interpreted. The new algorithm can be used in data compression/decompression system which runs on multi-microprocessor system, such as CELL, which the algorithm will be implemented on. Different from the conventional parallel LZW algorithm with one input directory, BD-LZW algorithm allows two threads reading...
In this paper we improve on the original model with integrating service in embedded system with using Web service. The new one is developed as the appearance of many organizations providing web service interface for common people. In detail we drop the work of maintaining data source in the building web service infrastructure. In other words in the 3 layer structure we only focus the business layer...
Cell microprocessor is a new multi-processors system, which has been used for consumer electronics, multimedia decoding/encoding, compress or uncompressing area. One important development technology for multi-processor system is barrier synchronization, which can improve the system performance if the appreciated barrier is adopted. Based three different communication mechanisms (mailbox, dma, and...
With the development of the broadband Internet, heterogeneous multimedia service or protocols have been widely deployed, however, to monitor their quality of service (QoS) has become an important job. There are two traditional strategies: one is server-based QoS monitor depending on the specific multimedia server, such as Helix. Another is tcpdump-based, for example mmdump, which can measure the nature...
In this paper we design the heterogeneous network instead of homogeneous one to reduce the load of single node and as a result it could eliminate probability of wireless sensor network (WSN) overload. For wide feasibility in China northwestern area we choose the Global System for Mobile Communications (GSM) to transmit monitoring data to server and implement a protocol stack like TCP to get a reliable...
A remote data acquisition and control system for Mossbauer spectroscopy based on an embedded computer with the Mini Real-Time Linux operating system is presented. This system can be accessed by an Internet browser or a Java application program, which is designed especially for this purpose. So controlling this system is simple and the interface is user friendly. The components of this system can easily...
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