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Distributed file systems enable the reliable storage of exabytes of information on thousands of servers distributed throughout a network. These systems achieve reliability and performance by storing multiple copies of data blocks in different locations across the network. The management of these copies of data is commonly handled by intermediate servers that track and coordinate the placement of data...
Galois Field arithmetic forms the basis of Reed-Solomon erasure coding techniques to protect storage or communication systems from failures. Most recent implementations of Galois Field arithmetic rely on 128-bit vector instructions, such as Intel's Streaming SIMD Extensions, which allows us to perform fast Galois Field computations. However, these implementations are not optimized for multi-threaded...
Over the last years, video streaming has become one of the most dominant Internet services. A trend now is that due to the increased availability of high-speed internet access, multimedia services are becoming more interactive and immersive. Examples of such applications are both cloud gaming and systems where users can interact with high-resolution content. Over the last few years, hardware video...
Despite current obstacles, smart camera networks that offload computationally intensive tasks to remote servers could allow energy-efficient 3D and multiview video encoding and delivery yet still ensure high-quality multiple-device video streaming.
Remote access to plant/machine HMIs has always been an area of great interest. A broad range of well-established solutions is available to fulfill the various tasks from remote operation to remote maintenance (e.g., VNC). Depending on the regarded solution, there are more or less strong demands on the respective client device. In the course of the gaining popularity of cloud computing-especially the...
This paper describes the design and implementation of a remote video monitoring system. The system adopts ARM11 as the main processor, and uses hard-coding to compress the video data with H.264. In the embedded environment of Linux, server adopts V4L2 interface technology, the latest H.264 video coding technology, and RTP/RTCP Real-Time Transport Protocol to complete video capture, encoding and transmission...
In order to integrate stereo garage devices in a network and realize information sharing, a communication network based on RS485 is designed. The network is simple but stable and useful. Both hardware design and software design are introduced. In hardware design, some primary schematics are proposed. In software design, communication protocols and data structures are discussed. At last, the service...
In this paper, we introduce two methods to implement clock synchronization in fiber channel. One is based on ELS (extended link service) transmission and the other is based on primitive signal transmission. Compared with the method based on ELS transmission, the primitive method is at least 20 times faster and consumes less power. Furthermore, we propose an area efficient method to implement encoding...
A gdb-based debugging system for OpenRISC1200 Processor based on IEEE1149.1 JTAG interface is developed. Unlike usual gdb-based embedded debugging systems, this system uses the hardware debugging modules in OpenRISC1200 Processor to extend GDB. Its debugging agent doesnpsilat work on the target but on the host computer, so it can work well without any target operating system support. In this paper,...
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