Wavelet transform coding for MCP error images using quadtree decomposition and ECVQ

This paper proposes a new wavelet transform video coder which employs motion compensation, wavelet decomposition, and entropy-constrained vector quantization (ECVQ), in sequence. Each of layered subimages obtained from wavelet decomposition is segmented into basic blocks, and then the blocks are selectively encoded by ECVQ according to the energy of the samples. We introduce an efficient method to encode the map representing which blocks are encoded, based on inter-band prediction followed by a quadtree encoding. The proposed coder uses a simple forward analyzer in order to optimize the encoding parameters and introduces a preprocessing of signals which normalizes the input vectors of ECVQ in order to reduce the image-dependency of ECVQ codebooks. Simulation results show that our video coder provides good PSNR (peak-to-peak signal-to-noise ratio) performance and efficient rate control.     

MAMA紫外探测器系统与高增益MCP（三）

介绍了多阳极微道板阵列（ＭＡＭＡ）紫外探测器系统的最新结构与性能，以及高增益ＭＣＰ工作的基本特性，并给出了对各类高增益ＭＣＰ测试的结果。     

一种CAN总线智能节点的设计

介绍基于MCP2510的CAN总线智能节点的硬件和软件设计.     

微通道板输出电极的最佳深度

本文给出了微通道板(MCP)输出电极的最佳深度表达式。在此最佳条件下,MCP输出电子能量分布(EDOE)曲线只有锐的低能主峰,它的半宽度达到极限值,能在极限空间分辨率下工作。解释了以前所报道的MCP的EDOE特性,那实际上是偏离最佳条件下的MCP的特性。     

天然放射性同位素产生的MCP噪声

本文计算了天然放射性同位素产生的MCP噪声(以A/cm2表示)。计算结果给出:Rb87产生的噪声最大,K40次之;最小为La138和V50。这表明:某些应用领域要求低噪声或超低噪声的MCP时,则该MCP的皮料中不能含有天然放射性同位素Rb87或K40。     

CAN总线扩充器MCP25050

介绍了MicroChip公司生产的CAN总线I/O扩充器MCP25050的主要特点、内部结构、引脚定义及工作原理 ,给出了用MCP25050扩充CAN节点的典型应用电路原理图     

The revisit of QoS routing based on non‐linear Lagrange relaxation

The development of efficient quality of service (QoS) routing algorithms in a high‐speed networking or the next generation IP networking environment is a very important and at the same time very difficult task due to the need to provide divergent services with multiple QoS requirements. Recently, a heuristic algorithm H_MCOP, which is based on a non‐linear Lagrange relaxation (NLR) technique, has been proposed to resolve the contradiction between the time complexity and the quality of solution. Even though H_MCOP has demonstrated outstanding capability of finding feasible solutions to the multi‐path constrained (MCP) problem, it has not exploited the full capability that an NLR‐based technique could offer. In this paper, we propose a new NLR‐based heuristic called NLR_MCP, in which the search process is interpreted from a probability's perspective. Simulation results indicate that NLR_MCP can achieve a higher probability of finding feasible solutions than H_MCOP. We also verify that the performance improvement of a MCP heuristic has a tremendous impact on the performance of a higher level heuristic that uses a MCP heuristic as the basic step. Copyright © 2006 John Wiley & Sons, Ltd.     

MCP2120型红外编码／译码器

MCP2120是1种低成本、高性能、完全静态红外编码／译码器。该器件位于1个通用异步接收／发射器(UART)与红外光收发器之间，调制／解调方法执行IrDA规范。本介绍MCP2120的特点、工作原理及应用。     

微通道板最佳倾斜角的设计

本文根据铅硅玻璃次级电子产额公式，计算了对应于不同入射能量的原初电子进入微通道板的最佳入射倾斜角。指出不同材料制作的微通道板（不同的微通道板皮玻璃料方），工作在不同的条件下（入射电子能量不同），就必须设计不同的倾斜角，否则微通道板的电子倍增潜力得不到充分发挥。     

带电粒子束聚焦装置中的图像信号采集与显示

本文介绍了带电粒子束聚焦装置中样品图像的采集与显示系统，着重介绍了国产ＭＣＰ的特点及其在信号接收中的应用经验，介绍了信号的放大与耦合，信号可同时送模拟显示器（ＣＲＴ）和计算机显示，一次扫描便可获得很清晰的图像。