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[Program doc] T_REC_H_264 DL : 0: ITU-T Rec H.264 文档, 2005年3月最新版.-ITU-T Rec H.264 documents, in March 2005 the latest version.
Date : 2025-12-16 Size : 1.5mb User : 李小钱
[Program doc] AVS.RAR DL : 0: 文章比较了H．264和AVS两个标准在运动补偿中运动矢量预测算法的差别，提出了一种实现H．264 中主档次(main pmille)下的第4级别(1evel 4)和AVS中的基准档次面向高清应用时运动矢量预测复用的硬件结构。提出了一种新颖的缓存管理更新机制．极限情况下用于运动矢量的片上缓存大小减少了75％。用FPGA验证结果表明资源占用情况是单独实现AVS的2．3倍，是单独同时实现两个标准的70％。能实现对1080i 30Hz高清图像实时解码。-Article compares the H. 264 and AVS standards in the two motion compensation algorithm in the motion vector prediction difference, a realization of H. 264 in the main level (main pmille) under section 4 level (1evel 4) and AVS in the benchmark grade of application-oriented high-definition motion vector prediction reuse the hardware structure. A novel cache management update mechanism. Limit used for motion vectors on-chip cache size reduction of 75. The results show that the use of FPGA resources to verify the occupancy of a separate AVS realize 2.3 times, both individually and at the same time realize the standard 70. Can realize high-definition images to 1080i 30Hz real-time decoding.
Date : 2025-12-16 Size : 269kb User : 宋恋
[Program doc] H323 DL : 0: 有关H323的相关技术参考资料 1、H0323协议书E.DOC 2、H.323与SIP的比较.pdf 3、基于H.323的MCU技术.doc 4、基于MPEG与H 323doc.doc-H323 on the relevant technical reference 1, H0323 agreement E.DOC2, H.323 and SIP comparison. Pdf3, the MCU-based H.323 technology. Doc4, based on the MPEG and H 323doc.doc
Date : 2025-12-16 Size : 390kb User : danis
[Program doc] JVT-X201 DL : 0: Joint Draft ITU-T Rec. H.264 | ISO/IEC 14496-10 / Amd.3 Scalable video coding JVT制定的H.264SVC扩展的建议标准-Joint Draft ITU-T Rec. H.264 | ISO/IEC 14496-10/Amd.3 Scalable video codingJVT developed recommended standards H.264SVC expansion
Date : 2025-12-16 Size : 5.13mb User : snazio
[Program doc] VIS2_DLL_Guider DL : 0: VIS H.323 version 2.0开发指南，此帮助文档总是随VIS H.323 DLL Library 一同发布的。-VIS H.323 version 2.0 to develop guidelines, with the help document is always VIS H.323 DLL Library released together.
Date : 2025-12-16 Size : 137kb User : 孟祥
[Program doc] H.264Recommendation(chs) DL : 0: ITU-T的H264建议书，2005年3月发布，中文翻译。-ITU-T H.462 Recommendation in Chinese, published in March 2005.
Date : 2025-12-16 Size : 3.57mb User : liuhuiyong
[Program doc] Chapter-three-and-18-program DL : 0: 本文件为（美）[7] William H．Tranter，K．Sam Shanmugan，Theodore S．Rappaport，Kurt L．Kosbar。通信系统仿真原理与无线应用[M]。北京，机械工业出版社，2005 中第3章至第18章仿真代码-This document (U.S.) [7] William H. Tranter, K. Sam Shanmugan, Theodore S. Rappaport, Kurt L. Kosbar. Theory and wireless communication system simulation application [M]. Beijing, Mechanical Industry Press, 2005 Chapter 3 to Chapter 18 of the simulation code
Date : 2025-12-16 Size : 68kb User : 高维廷
[Program doc] S7-200biancheng DL : 0: 模拟电位器 H–2 H.2 怎样使用高速计数器 H–6 H.3 自由通信口模式的简单应用 H–10 H.4 处理脉宽调制 H–13 H.5 可逆电动机起动器电路――适用于改变三相交流感应电动机旋转方向 H–16 H.6 步执行顺序（事件鼓定时器） H–19 H.7 S7-200用自由通信口模式和并行打印机连接 H–23 H.8 通过自由通信口模式接受条形码阅读器的信息 H–27 H.9 集成脉冲输出通过步进电机进行定位控制 H–31 H.10 SIMATIC S7-221通过自由通信口模式控制贺氏（Hayes）调制解调器 H–37 H.11 几台SIMATIC S7-200 PLC使用自由通信口模式连接在一个远程I/O网络上 H–43 H.12 S7-224与SIMOVERT电机驱动器之间的自由通信口通信接口 H-54 H.13 用S7-200 CPU 224 DC/DC/DC进行定位控制，并具有位置监视和位置校正 H-64 H.14 用S7-200实现PID控制 H-80 H.15 模拟量输入的处理 H-92 H.16 S7-200与PC之间的连接：从Windows应用程序中读数据 H-98-Analog potentiometers H-2 H.2 How to use high-speed counter H-6 H.3 Simple application of the Freeport mode H-10 H.4 Dealing with pulse width modulation H-13 H.5 Reversible motor starter circuit- to change the direction of rotation of three-phase AC induction motor H-16 H.6 Step sequence (drum event timer) H-19 H.7 S7-200 Freeport mode and parallel printer connection H-23 H.8 Freeport mode to accept the bar code reader H-27 H.9 Integrated pulse output by the stepper motor positioning control H-31 H.10 SIMATIC S7-221 modem Hayes (Hayes) Freeport mode to control H-37 H.11 Of SIMATIC S7-200 PLC to use the Freeport mode to connect a remote I/O network H-43 H.12 Freeport communication interface between the S7-224 and SIMOVERT motor drive H-54 H.13 S7-200 CPU 224 the DC/DC/DC positioning control and position monitoring and position correction H-64 H.14 S7-200 PID control H-80 H.15 Processing of analog input H-92 H.16 Connection between the S7-200
Date : 2025-12-16 Size : 761kb User : 李明
[Program doc] s7-200bcc DL : 0: 模拟电位器 H–2 H.2 怎样使用高速计数器 H–6 H.3 自由通信口模式的简单应用 H–10 H.4 处理脉宽调制 H–13 H.5 可逆电动机起动器电路――适用于改变三相交流感应电动机旋转方向 H–16 H.6 步执行顺序（事件鼓定时器） H–19 H.7 S7-200用自由通信口模式和并行打印机连接 H–23 H.8 通过自由通信口模式接受条形码阅读器的信息 H–27 H.9 集成脉冲输出通过步进电机进行定位控制 H–31 H.10 SIMATIC S7-221通过自由通信口模式控制贺氏（Hayes）调制解调器 H–37 H.11 几台SIMATIC S7-200 PLC使用自由通信口模式连接在一个远程I/O网络上 H–43 H.12 S7-224与SIMOVERT电机驱动器之间的自由通信口通信接口 H-54 H.13 用S7-200 CPU 224 DC/DC/DC进行定位控制，并具有位置监视和位置校正 H-64 H.14 用S7-200实现PID控制 H-80 H.15 模拟量输入的处理 H-92 H.16 S7-200与PC之间的连接：从Windows应用程序中读数据 H-98-Analog potentiometers H-2 H.2 How to use high-speed counter H-6 H.3 Simple application of the Freeport mode H-10 H.4 Dealing with pulse width modulation H-13 H.5 Reversible motor starter circuit- to change the direction of rotation of three-phase AC induction motor H-16 H.6 Step sequence (drum event timer) H-19 H.7 S7-200 Freeport mode and parallel printer connection H-23 H.8 Freeport mode to accept the bar code reader H-27 H.9 Integrated pulse output by the stepper motor positioning control H-31 H.10 SIMATIC S7-221 modem Hayes (Hayes) Freeport mode to control H-37 H.11 Of SIMATIC S7-200 PLC to use the Freeport mode to connect a remote I/O network H-43 H.12 Freeport communication interface between the S7-224 and SIMOVERT motor drive H-54 H.13 S7-200 CPU 224 the DC/DC/DC positioning control and position monitoring and position correction H-64 H.14 S7-200 PID control H-80 H.15 Processing of analog input H-92 H.16 Connection between the S7-200
Date : 2025-12-16 Size : 766kb User : 李明
[Program doc] H_264-decode-chip DL : 0: 目前, 基于各种芯片的 H.264 解决方案相继推出,在实现 H.264HP@L4 级别实时解码的芯片当中, 主要有以下几种方案: 基于专用芯片的结构( SoC+ASIC) 基于DSP+ARM的结构基于 x86 的结构。但低成本、低功耗以及高计算能力一直是方案中互相冲突的因素, 在这 3 个因素的相互制约下, 各方案有其不同的效果。-Solutions based on a variety of chip H.264 launched real-time decoding of H.264HP @ L4 level chips, which are mainly the following options:-based the dedicated chip structure (SoC+ASIC) DSP+ARM structure x86-based structure. Low cost, low power consumption and high computing power has been conflicting factors in the program, and mutual restraint in these three factors, each program has a different effect.
Date : 2025-12-16 Size : 284kb User : Guo Lin
[Program doc] HW4 DL : 0: A 16-QAM signal X, whose power is normalized as unity, is transmitted with OFDM over the discrete-time channel model h which has been used in Homework #2 and #3. As depicted in the below figure, the transmitter (TX) is now equipped with an N-point IDFT and the receiver (RX) with an N-point DFT, along with adding cyclic prefix (CP) and removing CP removal, respectively. The complex AWGN n is set with 20 dB SNR. Suppose that N=256 and the length of CP is 64. Assuming the OFDM system works with perfect synchronization. -Generate two pseudo random (PN) sequences for X, each with a length of 256 samples which are taken {+1,-1}, and add them before the 16-QAM data with a proper CP. The OFDM frame is depicted in the following figure. PN1 and PN2 are used for channel estimation now. Suppose the PN patterns are known at RX. Use the least squares (LS) method to estimate the channel by averaging the results obtained individually PN1 and PN2. (When perfoming the DFT window for the received signal at RX, you need to notice that the channel results in a delay of 22 samples.)
Date : 2025-12-16 Size : 206kb User : 淘爱57