H.264解码器中多码流解码功能的实现

H.264视频压缩标准以其优异的性能在广播、电视及多媒体领域得到越来越广泛的应用。同时,对H.264解码器的性能和功能的要求也随之越来越高。为了节约资源,为了满足数字电视主副画面、多路视频会议和监控设备等应用的需求,本文提出了在基于SoC的H.264解码器中支持多码流解码的设计方案,包括软件、硬件和软硬件协同设计。通过仿真和FPGA验证表明,该设计稳定可靠,满足预期功能要求。     

H.264解码器的ASIC解决方案及其FPGA验证平台

论述了H.264解码器的ASIC(专用芯片)解决方案及其FPGA验证平台.该方案比常见DSP解决方案有更快的解码速度和更低的能耗,解决了H.264解码器由于算法复杂性增大带来的速度和能耗问题.鉴于大规模SoC芯片验证的复杂性,还比较详细地介绍了该芯片基于FPGA的验证平台.     

H.264/AVC硬件解码器设计及其验证策略

提出了一种H.264/AVC硬件解码器的SOC/ASIC设计方案,并在实现电路的基础上,重点分析了基于文中的硬件设计方案的验证策略。该设计方案已经在基于FPGA的验证平台上通过功能原型验证,结果证明,这是一个完全可行的H.264/AVC硬件解码设计方案。     

H.264解码器的设计与优化

介绍了一种H.264(JVT)解码器的软件设计及其优化方法。以H.264测试模型jm50c为参考重新设计H.264解码器，为解码器的设计及优化提供了一种方法。试验结果表明，本方法与jm50c相比，解码速度提高了10-25倍。     

H．264/AVC解码器中去块效应滤波系统

本文介绍了H．264/AVC编解码器中块效应产生的原因及去块效应滤波的算法原理,提出了基于FPGA平台实现的H．264/AVC解码器中的去块效应滤波系统的硬件设计方法,并通过了仿真验证。     

H.264/AVC解码中帧内预测的硬件实现

根据H．264／AVC的特点，设计出一种适合于帧内预测解码的硬件实现方式，并且引入了帧场自适应模式，有利于提高解码效率，并将该结构配合其他设计好的解码器模块，在FPGA上实现了标准清晰度的H．264视频的实时解码。     

H.264解码在ADDSP-BF533上的实现和优化

首先介绍了H.264解码器结构和解码实现流程;然后重点阐述了H.264解码器在ADDSP-BF533上的实现和优化策略.实验结果表明,H.264解码器的实现方法和优化策略较为有效,能够满足DSP实时解码的需求.     

帧间预测在支持MBAFF的H.264解码器中的实现

本文主要介绍了H.264解码器中关于宏块级帧场自适应(MBAFF)模式在P帧和B帧中的预测算法,并提出了相应的组织结构和实现方法.通过仿真和功能验证,证明该设计功能稳定,能够满足H.264标准框架下的解码要求.     

新产品

<正> 全新4K与三维H.264数字视频解码器美国矽映公司日前推出其IP核系列最新成员cineramIC 4K与三维H.264数字视频解码器。cineramIC IP核具有高性能、低成本和高质量的视频成像功能,可集成到系统级芯片上,用于新一代数字电视、机顶盒和摄像机应用以及专业视频编辑、广播、医疗和监控FPGA应用当中。在消费类高清电视风靡全球的当下,三维视频技术在影院中得到长足发展,并日渐走入消费类数字电视市场。随着专业级4K分辨率照相机和显示器在近期的推出,超高清分辨率的商业化也是指日可待。cineramIC IP核具有高性能、低成本的多制式数字视频解码器设计,拥有以下特点:1、利用单视频管线技术,在30帧/秒的情况下可呈     

H.264高清解码器帧率控制显示系统的SOC实现

H.264视频压缩技术是压缩比很高的技术,且在同等压缩比下有较高的质量,H.264解码器的应用也越来越广泛,而显示控制系统在H.264解码器中是一个关键单元,本文讨论在H.264解码器中通过应用程序设定帧率,从而控制解码器解码速度的显示控制系统。     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks     

Call for Papers—Feature Topic,Vol.12,No.7,2015

正Information Centric Networking Information-Centric Networking(ICN) is an emerging direction in Future Internet architecture research,gaining significant tractions among academia and industry.Aiming to replace the conventional host-to-host communication model by a data-centric model,ICN treats data content as the first     

JOURNAL OF ELECTRONICS(CHINA)

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NEXT GENERATION WIRELESS NETWORKS–ESPECIALLY THE USE OF MILLI-MICROWAVE BANDS

The global bandwidth shortage of wireless communications has motivated the exploration of the naillimeter wave （ram-wave） frequency spectrum for the next generation wireless communications. Recent advances in RF CMOS technology and high speed baseband signal processing technologies have enabled tile extensive research and development of turn-wave wireless communications. The multi gigabit per second data rate of ram-wave system will lead to applications in many important scenarios, such as WPAN, WLAN,back-haul for cellular system. And the frequency bands include 28 GHz, 38 GHz, 45GHz, 60GHz, E-BAND and even beyond 100 GHz. The propagation and the imitation of the RF circuits design in these frequency bands make the directional antennas be inevitable for mm-wave communications.