zhaozhongbo 发表于 2010-3-29 13:45:00

[分享]AV端口大全

<h2><font size="6">AV端口大全(包括音频与视频)</font></h2>
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<p>家庭影院中的音视频都是由不同的器材相互连接而组成的,而把这些影音器材连接起来的就是各种各样的线材,它们分别负责着视频和音频信号的传输,又或者同时传输<span lang="EN-US">AV</span>信号。因此可以这样认为,影音效果的好劣与否出了受到器材品质的影响之外,还取决于不同线材的使用。因为不同的线材出了外观和包装存在差异以外,从生产工艺、原材料的选择到各种新型技术的运用都使得线材破乃至有较大的差异。我们在这一期关于家庭影院标准的特别策划中,将详细地向大家介绍各种线材以及插口标准,方便读者进行不同的搭配和使用系统连接。</p>
<p><a href="http://www.1000bbs.com/UploadFiles/2010-03/admin/201003081407023104.jpg" target="_blank"></a></p>
<p><a href="http://www.1000bbs.com/UploadFiles/2010-03/admin/2010030814070987964.jpg" target="_blank"></a></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font face="宋体"><img src="http://www.fuhess.com/UploadFiles/2010-03/admin/201003081407023104.jpg"/></font></span></b></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font face="宋体"><img src="http://www.fuhess.com/UploadFiles/2010-03/admin/2010030814070987964.jpg"/></font></span></b></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font face="宋体">同轴音频线<span lang="EN-US"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></span></font></span></b></p>
<p style="TEXT-INDENT: 21pt; MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font size="3"><font face="宋体">同轴音频接口(<span lang="EN-US">Coaxial</span>),标准为<span lang="EN-US">SPDIF</span>(<span lang="EN-US">Sony / Philips Digital InterFace</span>),是由索尼公司与飞利浦公司联合制定的,在视听器材的背板上有<span lang="EN-US">Coaxial</span>作标识,主要是提供数字音频信号的传输。它的接头分为<span lang="EN-US">RCA</span>和<span lang="EN-US">BNC</span>两种。数字同轴接口采用阻抗为<span lang="EN-US">75</span>Ω的同轴电缆为传输媒介,其优点是阻抗恒定,传输频带较宽,优质的同轴电缆频宽可达几百兆赫。同轴数字传输线标准接头采用<span lang="EN-US">BNC</span>头,其阻抗是<span lang="EN-US">75</span>Ω,与<span lang="EN-US">75</span>Ω的同轴电缆配合,可保证阻抗恒定,确保信号传输正确。也就是说在传输的线材搭配上,应该是以适用于传输高频率数字讯号的<span lang="EN-US">75</span>欧姆同轴线材作为</font></font></span></p>
<p><a href="http://www.1000bbs.com/UploadFiles/2010-03/admin/2010030814080587403.jpg" target="_blank"></a></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font face="宋体"><img src="http://www.fuhess.com/UploadFiles/2010-03/admin/2010030814080587403.jpg"/></font></span></b></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font face="宋体">喇叭线<span lang="EN-US"><o:p></o:p></span></font></span></b></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font size="3"><font face="宋体">喇叭线是连接于功率放大器和喇叭之间,用来传送模拟音频信号,使喇叭发声的线材。主要有裸线连接,香蕉插头与<span lang="EN-US">Y</span>插头之分,不同的插头或者裸线都是为了方便不同用家连接习惯,同时又因为线材用料的不同而安装上不同的连接插头。喇叭线的链接主要是要求插头能够紧密接触到器材的插口上,从而提高传输性能和稳定性。</font></font></span></p>
<p>&nbsp;<img src="http://www.fuhess.com/UploadFiles/2010-03/admin/2010030814081337599.jpg"/></p>
<p><a href="http://www.1000bbs.com/UploadFiles/2010-03/admin/2010030814081337599.jpg" target="_blank"></a></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US"><font face="宋体">RS-232C<o:p></o:p></font></span></b></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><font size="3"><font face="宋体"><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US">RS-232C</span><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体">标准(协议)的全称是<span lang="EN-US">EIA-RS-232C</span>标准,是最为常见的串行接口。<span lang="EN-US">RS-232C</span>规标准接口有<span lang="EN-US">25</span>条线,包括<span lang="EN-US">4</span>条数据线,<span lang="EN-US">11</span>条控制线,<span lang="EN-US">3</span>条定时线,<span lang="EN-US">7</span>条备用和未定义线,常用的只有<span lang="EN-US">9</span>条线,常用于与<span lang="EN-US">25pin D-sub</span>端口一同使用,其最大传输速率为<span lang="EN-US">20kbps</span>,线缆最长为<span lang="EN-US">15</span>米。<span lang="EN-US">RS232C</span>端口被用于将计算机信号输入控制投影仪。<span lang="EN-US"><o:p></o:p></span></span></font></font></p>
<p><a href="http://www.1000bbs.com/UploadFiles/2010-03/admin/2010030814081943153.jpg" target="_blank"></a></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US"><font face="宋体"><img src="http://www.fuhess.com/UploadFiles/2010-03/admin/2010030814081943153.jpg"/></font></span></b></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US"><font face="宋体">USB<o:p></o:p></font></span></b></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><font size="3"><font face="宋体"><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US">USB</span><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体">是英文<span lang="EN-US">Universal Serial BUS</span>的缩写,中文含义是“通用串行总线”。它是一种应用在<span lang="EN-US">pc</span>领域的新型接口技术。标准的<span lang="EN-US">USB2.0</span>端口可以将设备之间的数据传输速度增加到了<span lang="EN-US">480Mbps</span>,比<span lang="EN-US">USB1.1</span>标准块<span lang="EN-US">40</span>倍,速度的提高对于用户的最大好处就是意味着可以使用到更高效的外部设备,<span lang="EN-US">USB2.0</span>标准已成为下一代周边设备接口的标准配置。一般的影音器材都可以通过这个<span lang="EN-US">USB</span>端口连接外部存储器,并播放存储器内的影音文件。<span lang="EN-US"><o:p></o:p></span></span></font></font></p>
<p><a href="http://www.1000bbs.com/UploadFiles/2010-03/admin/2010030814082612007.jpg" target="_blank"></a></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font face="宋体"><img src="http://www.fuhess.com/UploadFiles/2010-03/admin/2010030814082612007.jpg" width="165" height="242"/></font></span></b></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font face="宋体">光纤音频接口<span lang="EN-US"><o:p></o:p></span></font></span></b></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font size="3"><font face="宋体">光纤音频接口<span lang="EN-US">TosLink</span>,全名<span lang="EN-US">Toshiba Link</span>,这是日本东芝(<span lang="EN-US">TOSHIBA</span>)公司较早开发并设定的技术标准,在视听器材的背板上以<span lang="EN-US">Optical</span>作标识。现在几乎所有的数字影音设备都具备这种格式的接头。<span lang="EN-US">TosLink</span>光纤曾大量应用在普通的中低档<span lang="EN-US">CD</span>、<span lang="EN-US">LD</span>、<span lang="EN-US">MD</span>、<span lang="EN-US">DVD</span>机及组合音箱上。光纤连接可以实现电气隔离,阻止数字噪音通过地线传输,有利于提高<span lang="EN-US">DAC</span>的信噪比,但是,实际误差是影响音质的重要因素,所以衡量数字音响设备传输接口性能的好坏,应以引起实际误差的大小为标准。光纤连接的信号要经过发射器和接收器的两次转换,会产生严重影响音质的实际抖动误差(<span lang="EN-US">jitter</span>)。制造光纤常用的材料有塑料、石英、玻璃等,玻璃光纤(<span lang="EN-US">ST</span>)是最昂贵的一种。</font></font></span></p>
<p><a href="http://www.1000bbs.com/UploadFiles/2010-03/admin/201003081408324994.jpg" target="_blank"></a></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><font face="宋体"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US"><img src="http://www.fuhess.com/UploadFiles/2010-03/admin/201003081408324994.jpg"/></span></b></font></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><font face="宋体"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US">RCA</span></b><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体">模拟音频<span lang="EN-US"><o:p></o:p></span></span></b></font></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><font size="3"><font face="宋体"><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US">RCA</span><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体">线缆传输模拟信号,是目前最普遍的音频连接方式,通常用于连接信号源与功率放大器之间,如果你是使用前后级设备的,那么前级与后级之前同样是使用这种线材来进行连接。每一根<span lang="EN-US">RCA</span>线缆负责传输一个声道的音频信号,所以通常这种线材是一对出售的。对于多声道系统,就要根据实际的声道数量配以想同数量的<span lang="EN-US">RCA</span>线材,立体声<span lang="EN-US">RCA</span>音频接口的右声道一般使用红色标注,左声道则使用蓝色或者白色标注。<span lang="EN-US"><o:p></o:p></span></span></font></font></p>
<p><a href="http://www.1000bbs.com/UploadFiles/2010-03/admin/2010030814083843080.jpg" target="_blank"></a></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><font face="宋体"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US"><img src="http://www.fuhess.com/UploadFiles/2010-03/admin/2010030814083843080.jpg"/></span></b></font></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><font face="宋体"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US">RJ-45</span></b><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体">接口<span lang="EN-US"><o:p></o:p></span></span></b></font></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><font size="3"><font face="宋体"><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US">RJ-45</span><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体">端口主要是用于连接计算机的以太网。以太网中也主要采用双绞线作为传输介质。所以根据端口的传输速率不同,<span lang="EN-US">RJ-45</span>端口又可分为<span lang="EN-US">10Base-T</span>网<span lang="EN-US">RJ-45</span>端口和<span lang="EN-US">100Base-TX</span>网<span lang="EN-US">RJ-45</span>端口两类。<span lang="EN-US"><o:p></o:p></span></span></font></font></p>
<p style="TEXT-INDENT: 21pt; MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font size="3"><font face="宋体">其中<span lang="EN-US">10Base-T</span>网的<span lang="EN-US">RJ-45 </span>端口在路由器中通常是标识为“<span lang="EN-US">ETH</span>”,而<span lang="EN-US">100Base-TX </span>网的<span lang="EN-US">RJ-45</span>端口则通常标识为“<span lang="EN-US">10/100bTX</span>”,这主要是现在快速以太网路由器产品多数还是采用<span lang="EN-US">10/100Mbps</span>带宽自适应的。许多影音播放器材可以通过这个端口来连接到网络中去访问,浏览和播放各种影音文件。<span lang="EN-US"><o:p></o:p></span></font></font></span></p>
<p><a href="http://www.1000bbs.com/UploadFiles/2010-03/admin/2010030814084350331.jpg" target="_blank"></a></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><font face="宋体"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US"><img src="http://www.fuhess.com/UploadFiles/2010-03/admin/2010030814084350331.jpg"/></span></b></font></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><font face="宋体"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US">BNC</span></b><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体">端口<span lang="EN-US"><o:p></o:p></span></span></b></font></p>
<p style="TEXT-INDENT: 21pt; MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font size="3"><font face="宋体">通常用于工作站和同轴电缆连接的连接器,标准专业视频设备输入、输出端口。<span lang="EN-US">BNC</span>电缆有<span lang="EN-US">5</span>个连接头用于接收红、绿、蓝、水平同步和垂直同步信号。<span lang="EN-US">BNC</span>接头有别于普通<span lang="EN-US">15</span>针<span lang="EN-US">D</span>-<span lang="EN-US">SUB</span>标准接头的特殊显示器接口。由<span lang="EN-US">R</span>、<span lang="EN-US">G</span>、<span lang="EN-US">B</span>三原色信号及行同步、场同步五个独立信号接头组成。主要用于连接工作站等对扫描频率要求很高的系统。<span lang="EN-US">BNC</span>接头可以隔绝视频输入信号,使信号相互间干扰减少,且信号频宽较普通<span lang="EN-US">D</span>-<span lang="EN-US">SUB</span>大,可达到最佳信号响应效果。<span lang="EN-US"><o:p></o:p></span></font></font></span></p>
<p><a href="http://www.1000bbs.com/UploadFiles/2010-03/admin/2010030814084957169.jpg" target="_blank"></a></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US"><font face="宋体"><img src="http://www.fuhess.com/UploadFiles/2010-03/admin/2010030814084957169.jpg"/></font></span></b></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US"><font face="宋体">S-Video<o:p></o:p></font></span></b></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font size="3"><font face="宋体">俗称<span lang="EN-US">S</span>端子,其全称是<span lang="EN-US">Separate Video</span>,也称为<span lang="EN-US"> SUPER VIDEO</span>。<span lang="EN-US">S-Video</span>连接规格是由日本人开发的一种规格,<span lang="EN-US">S</span>指的是“<span lang="EN-US">SEPARATE</span>(分离)”,它将亮度和色度分离输出,避免了混合视讯讯号输出时亮度和色度的相互干扰。<span lang="EN-US">S</span>端子实际上是一种五芯接口,由两路视亮度信号、两路视频色度信号和一路公共屏蔽地线共五条芯线组成。<span lang="EN-US"><o:p></o:p></span></font></font></span></p>
<p style="TEXT-INDENT: 21pt; MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font size="3"><font face="宋体">同<span lang="EN-US">AV </span>接口相比,由于它不再进行<span lang="EN-US">Y/C</span>混合传输,因此也就无需再进行亮色分离和解码工作,而且使用各自独立的传输通道在很大程度上避免了视频设备内信号串扰而产生的图像失真,极大地提高了图像的清晰度。</font></font></span></p>
<p><a href="http://www.1000bbs.com/UploadFiles/2010-03/admin/2010030814091227605.jpg" target="_blank"></a></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><font face="宋体"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US"><img src="http://www.fuhess.com/UploadFiles/2010-03/admin/2010030814091227605.jpg"/></span></b></font></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><font face="宋体"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US">HDMI</span></b><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体">接口<span lang="EN-US"><o:p></o:p></span></span></b></font></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><font size="3"><font face="宋体"><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US">HDMI</span><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体">是新一代的多媒体接口标准,该标准由日立、松下、飞利浦、索尼、汤姆逊、东芝和<span lang="EN-US">Silicon Image</span>等七家公司在<span lang="EN-US">2002</span>年<span lang="EN-US">4</span>月开始发起。为了取代传统的<span lang="EN-US">DVD</span>碟机,电视及其他视频输出设备的已有接口,统一并简化用户终端接线,提供更高带宽的数据传输速度和数字化无损传送音视频信号,<span lang="EN-US">2006</span>年<span lang="EN-US">5</span>月<span lang="EN-US">22</span>日,<span lang="EN-US">HDMI</span>标准组织限定了<span lang="EN-US">1.3a</span>版本,新标准将带宽和速率都提升了<span lang="EN-US">2</span>倍以上,达到了<span lang="EN-US">240MHz</span>的带宽和<span lang="EN-US">10.2Gbps</span>速率,以满足最新的<span lang="EN-US">1440p/WAGA</span>分辨率和无压缩<span lang="EN-US">7.1</span>声道的影音数据传输要求。去年最新推出的<span lang="EN-US">HDMI 1.3b</span>版本的线材产品<span lang="EN-US"><o:p></o:p></span></span></font></font></p>
<p><a href="http://www.1000bbs.com/UploadFiles/2010-03/admin/2010030814091743755.jpg" target="_blank"></a></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font face="宋体"><img src="http://www.fuhess.com/UploadFiles/2010-03/admin/2010030814091743755.jpg"/></font></span></b></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font face="宋体">复合视频<span lang="EN-US"><o:p></o:p></span></font></span></b></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font size="3"><font face="宋体">复合视频端子也叫<span lang="EN-US">AV</span>端子或者<span lang="EN-US">Video</span>端子,是目前最普遍的一种视频接口,它是声,画分离的视频端子,一般由三个独立的<span lang="EN-US">RCA</span>插头(又叫梅花接口<span lang="EN-US">RCA</span>端子)组成,其中的黄色插口连接混合视频信号,彩色插口连接左声道声音信号,红色插口连接右声道声音信号。它是一种混合视频信号,没有经过<span lang="EN-US">PF</span>射频信号那些调制,放大,检波,解调等过程,信号保真度相对较好。图像品质受所用的材质影响较大,分辨率一般可达<span lang="EN-US">350-450</span>线,需要一个模拟转数字的过程,会损失不少信噪比。<span lang="EN-US"><o:p></o:p></span></font></font></span></p>
<p><a href="http://www.1000bbs.com/UploadFiles/2010-03/admin/20100308140923329.jpg" target="_blank"></a></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><font face="宋体"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US"><img src="http://www.fuhess.com/UploadFiles/2010-03/admin/20100308140923329.jpg"/></span></b></font></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><font face="宋体"><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US">VGA</span></b><b style="mso-bidi-font-weight: normal"><span style="FONT-SIZE: 15pt; mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体">端口<span lang="EN-US"><o:p></o:p></span></span></b></font></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font size="3"><font face="宋体"> <span lang="EN-US">VGA</span>端子也叫<span lang="EN-US">D-Sub</span>接口。<span lang="EN-US">VGA</span>接口是一种<span lang="EN-US">D</span>型接口,上面共有<span lang="EN-US">15</span>针,分成三排,每排五个。<span lang="EN-US">VGA</span>接口是显卡上应用最为广泛的接口类型,绝大多数的显卡都带有此种接口。影碟机拥有<span lang="EN-US">VGA</span>接口就可以方便的和计算机的显示器连接,用计算机的显示器显示图像。<span lang="EN-US"><o:p></o:p></span></font></font></span></p>
<p style="TEXT-INDENT: 21pt; MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><font size="3"><font face="宋体"><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US">VGA</span><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体">接口传输的仍然是模拟信号,对于以数字方式生成的显示图像信息,通过数字<span lang="EN-US">/</span>模拟转换器转变为<span lang="EN-US">R</span>、<span lang="EN-US">G</span>、<span lang="EN-US">B</span>三原色信号和行、场同步信号,信号通过电缆传输到显示设备中。对于模拟显示设备,如模拟<span lang="EN-US">CRT</span>显示器,信号被直接送到相应的处理电路,驱动控制显像管生成图像。<span lang="EN-US"><o:p></o:p></span></span></font></font></p>
<p><a href="http://www.1000bbs.com/UploadFiles/2010-03/admin/2010030814092835381.jpg" target="_blank"></a></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font size="3"><font face="宋体"><strong><img src="http://www.fuhess.com/UploadFiles/2010-03/admin/2010030814092835381.jpg"/></strong></font></font></span></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font size="3"><font face="宋体"><strong>分离视频<span lang="EN-US"><o:p></o:p></span></strong></font></font></span></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体"><font size="3"><font face="宋体">又称作视频色差端子,是在<span lang="EN-US">S</span>端子的基础上,把色度(<span lang="EN-US">C</span>)信号里的蓝色差(<span lang="EN-US">b</span>)、红色差(<span lang="EN-US">r</span>)分开发送,其分辨率可达到<span lang="EN-US">600</span>线以上。它通常采用<span lang="EN-US">YPbPr</span>和<span lang="EN-US">YCbCr</span>两种标识,前者表示逐行扫描色差输出,后者表示隔行扫描色差输出。目前仍有一部分的电视类产品使用色彩输入来提高输入信号的品质,而且透过色差端子,可以输入多种等级信号,包括<span lang="EN-US">480p</span>、<span lang="EN-US">720p</span>、<span lang="EN-US">1080i</span>等等,都是要通过色差输入才有办法将信号传送到电视当中。我们只需知道<span lang="EN-US">Y</span>、<span lang="EN-US">Cr</span>、<span lang="EN-US">Cb</span>的值就能够得到<span lang="EN-US">G</span>(绿色)的值,所以在视频输出和颜色处理过程中就统一忽略绿色差<span lang="EN-US">Cg</span>而只保留<span lang="EN-US">Y</span>、<span lang="EN-US">Cr</span>、<span lang="EN-US">Cb</span>。<span lang="EN-US"><o:p></o:p></span></font></font></span></p>
<p><a href="http://www.1000bbs.com/UploadFiles/2010-03/admin/2010030814093460216.jpg" target="_blank"></a></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><font size="3"><font face="宋体"><strong><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US"><img src="http://www.fuhess.com/UploadFiles/2010-03/admin/2010030814093460216.jpg"/></span></strong></font></font></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><font size="3"><font face="宋体"><strong><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US">DVI</span><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体">端口<span lang="EN-US"><o:p></o:p></span></span></strong></font></font></p>
<p style="MARGIN: 0cm="0cm"0cm="0cm"0pt" class="MsoPlainText"><font size="3"><font face="宋体"><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体" lang="EN-US">DVI</span><span style="mso-bidi-font-family: 宋体; mso-hansi-font-family: 宋体">全称为<span lang="EN-US">Digital Visuai Interface</span>,它是<span lang="EN-US">1999</span>年由<span lang="EN-US">Silicon Image</span>,<span lang="EN-US">Intel</span>,<span lang="EN-US">Compaq</span>(康柏),<span lang="EN-US">IBM</span>,<span lang="EN-US">HP</span>,<span lang="EN-US">NEC</span>,<span lang="EN-US">Fujitau</span>(富士通)等公司共同组成<span lang="EN-US">DDWG</span>(<span lang="EN-US">Digital Display Working Group</span>,数字显示工作组)推出的接口标准。目前的<span lang="EN-US">DVI</span>接口分为两种,一个事<span lang="EN-US">DVI-D</span>接口,只能接收数字信号,接口上只有<span lang="EN-US">3</span>排<span lang="EN-US">8</span>列共<span lang="EN-US">24</span>个针脚,其中右上角的一个针脚为空,不能兼容模拟信号。另外一种则是<span lang="EN-US">DVI-I</span>借口,可同时兼容模拟和数字信号。兼容模拟信号并不意味着模拟信号的<span lang="EN-US">D-Sub</span>接口可以连接在<span lang="EN-US">DVI-I</span>接口上,而是必须通过一个转换接头才能使用,一般采用这种接口的显卡都会带有相关的转换接头。</span></font></font></p></div></div><img src="http://www.fuhess.com/UploadFiles/2010-03/admin/2010030814094177794.jpg"/>

zblzblfz 发表于 2010-3-31 17:54:00

很全面,想补充一下,都想不出

duwuyu 发表于 2010-4-13 14:31:00

很好

yark123 发表于 2010-5-11 20:51:00

不错

lihua19901021 发表于 2010-5-14 16:27:00

<p>好</p>

patrioter 发表于 2010-5-19 10:50:00

太全面了 好好学习中.............<br/>

njbt 发表于 2010-6-28 16:11:00

<p>全了</p>
<p>&nbsp;</p>

金维智能 发表于 2010-6-30 11:30:00

太全面了 好好学习中.............

m123 发表于 2010-7-29 15:32:00

基本都见过 不过还是谢谢!!!

yjtxgt 发表于 2010-7-29 16:17:00

学习学习学习

net021 发表于 2010-7-30 14:22:00

<p>全面!相当全面!</p>

HmbOp 发表于 2010-8-7 14:02:00

学习了,谢谢楼主

yh1908 发表于 2010-8-12 08:16:00

<div id="textstyle_8" style="FONT-SIZE: 9pt; OVERFLOW: hidden; WORD-BREAK: break-all; TEXT-INDENT: 24px; WORD-WRAP: break-word">太全面了 好好学习中............. </div>

okmll 发表于 2010-8-13 14:41:00

mkyyk 发表于 2011-2-21 12:20:00

很好的资料,学习一下。

我是陈超 发表于 2012-6-26 15:18:00

<p>说的挺齐全的。挺好的。</p>

路过天堂 发表于 2012-6-27 12:24:00

好资料&nbsp;&nbsp; 学习一下&nbsp;

吴为 发表于 2012-7-26 11:00:00

长见识,非常感谢!

yupla2 发表于 2012-8-16 10:01:00

初学者提高用

学者的徒弟 发表于 2012-8-24 10:35:00

有用的,学习了
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