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layers

  • osi layers approach study

    osi layers approach study

    標(biāo)簽： approach layers study osi

    上傳時(shí)間： 2017-06-14

    上傳用戶：qw12

  • 芯片系統(tǒng)架構(gòu)技術(shù)及開發(fā)平臺研究之推動

    摘要 本研究計(jì)劃之目的，在整合應(yīng)用以ARM為基礎(chǔ)的嵌入式多媒體實(shí)時(shí)操作系統(tǒng)于H.264/MPEG-4多媒體上。由于H.264是一種因應(yīng)實(shí)時(shí)系統(tǒng)(RTOS)所設(shè)計(jì)的可擴(kuò)展性串流傳輸(scalability stream media communication)的編碼技術(shù)。H.264主要架構(gòu)于細(xì)細(xì)粒可擴(kuò)展(Fine Granula Scalability,FGS)的壓縮編碼機(jī)制。細(xì)粒度可擴(kuò)展壓縮編碼技術(shù)是最新MPEG-4串流式傳輸標(biāo)準(zhǔn)，能依頻寛的差異來調(diào)整傳輸?shù)姆绞健＜?xì)粒度擴(kuò)展縮編碼技術(shù)以編入可選擇性的增強(qiáng)層(enhanced layers)于碼中，來提高影像傳輸?shù)馁|(zhì)量。本計(jì)劃主要在于設(shè)計(jì)一種簡單有效的實(shí)時(shí)階層可擴(kuò)展的影像傳輸系統(tǒng)。在增強(qiáng)層編碼及H.264的基本層(base layer)編碼上使用漸進(jìn)的細(xì)粒度可擴(kuò)展編碼(Progressive Fine Granularity Scalable,PFGS)能直接使用H.264的格式特色來實(shí)現(xiàn)FGS。同時(shí)加入了LB-LLF(Layer-Based Least-Laxity-Fir stscheduling algorithm)的排程算法，來增 進(jìn)網(wǎng)路傳輸影像的質(zhì)量。由實(shí)驗(yàn)結(jié)果顯示本系統(tǒng)在串流影像質(zhì)量PSNR值上確有較佳的效能。

    標(biāo)簽： 芯片系統(tǒng) 架構(gòu) 開發(fā)平臺

    上傳時(shí)間： 2014-12-26

    上傳用戶：mpquest

  • 基于CAN總線的綜自通訊規(guī)約設(shè)計(jì)

    介紹一種基于CAN總線的牽引變電站自動化系統(tǒng)通訊規(guī)約的設(shè)計(jì)，CAN通訊規(guī)約采用標(biāo)準(zhǔn)幀，報(bào)文采用主動發(fā)送和發(fā)送查詢兩種處理形式。該設(shè)計(jì)在城市輕軌與地鐵牽引變電站中的應(yīng)用表明：可實(shí)現(xiàn)間隔層和通訊處理層的數(shù)據(jù)快速、可靠的交換，提高牽引變電站的安全性和穩(wěn)定性 。 Abstract:  This paper firstly presents a kind of design dealing with communicational protocol to the traction substation automation system based on CAN bus,and then comes up with the ideas that all frames of CAN communicational protocol should adopt the standard frame,and that messages be processed by two ways:sending initiatively and sending quiries.Subway and light rail application shows that the use of the CAN bus is possible to exchange data quickly and reliably between the layers of the middle and the communicational processing,hence to improve the safety and stability of traction substations.

    標(biāo)簽： CAN 總線 通訊規(guī)約

    上傳時(shí)間： 2013-11-07

    上傳用戶：bs2005

  • 場效應(yīng)管產(chǎn)品指南

    The super-junction structure, which has P-type pillar layers as shown left, realizes high withstand voltage and ON-resistance lower than the conventional theoretical limit of silicon.

    標(biāo)簽： 場效應(yīng)管 產(chǎn)品指南

    上傳時(shí)間： 2014-12-31

    上傳用戶：qwer0574

  • This Delphi 4.0 example uses the MapX Ver 4.0 OCX Control. The main goal of this example is to sho

    This Delphi 4.0 example uses the MapX Ver 4.0 OCX Control. The main goal of this example is to show the use of the new object editing capabilities in MapX Ver 3.51. The program show how to perform functions such as adding a new layer adding lines and points, and editing a layers data.

    標(biāo)簽： example 4.0 Control Delphi

    上傳時(shí)間： 2015-04-10

    上傳用戶：lhc9102

  • Using a holistic approach to teaching developers the ins-and-outs of GNU/Linux programming using API

    Using a holistic approach to teaching developers the ins-and-outs of GNU/Linux programming using APIs, tools, communication, and scripting, this book introduces programmers to the environment from the lowest layers to the user layers.

    標(biāo)簽： ins-and-outs programming developers holistic

    上傳時(shí)間： 2013-12-23

    上傳用戶：kristycreasy

  • The Unisoft software module GERBER CONNECTION (CNC-BRIDGE). GERBER CONNECTION has all the features o

    The Unisoft software module GERBER CONNECTION (CNC-BRIDGE). GERBER CONNECTION has all the features of VIEW-MARKUP and adds the ability to open multiple gerber file layers and add information to components. It is always the preference to use the CAD data vs. gerber data. If you do not have the CAD data then GERBER CONNECTION can help.

    標(biāo)簽： CONNECTION GERBER CNC-BRIDGE software

    上傳時(shí)間： 2014-01-21

    上傳用戶：13681659100

  • DirectFB is a thin library that provides hardware graphics acceleration, input device handling and a

    DirectFB is a thin library that provides hardware graphics acceleration, input device handling and abstraction, integrated windowing system with support for translucent windows and multiple display layers on top of the Linux Framebuffer Device.

    標(biāo)簽： acceleration DirectFB hardware graphics

    上傳時(shí)間： 2014-06-30

    上傳用戶：wangchong

  • A Cross-browser JavaScript DHTML Library which adds Drag Drop functionality and extended DHTML capab

    A Cross-browser JavaScript DHTML Library which adds Drag Drop functionality and extended DHTML capabilities to layers and to any desired image, even those integrated into the text flow.

    標(biāo)簽： DHTML Cross-browser functionality JavaScript

    上傳時(shí)間： 2014-01-07

    上傳用戶：xmsmh

  • IEEE 802.16e-2005 IEEE Standard for Local and metropolitan area networks Part 16: Air Interface for

    IEEE 802.16e-2005 IEEE Standard for Local and metropolitan area networks Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems Amendment for Physical and Medium Access Control layers for Combined Fixed and Mobile Operation in Licensed Bands.

    標(biāo)簽： IEEE metropolitan Interface for

    上傳時(shí)間： 2016-10-02

    上傳用戶：litianchu

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