供应三星55寸液晶监视器｜三星55寸监视器批发
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<div style="text-align: left; line-height: 18pt; word-break: break-all" align="left"><span style="letter-spacing: 0.4pt; color: black">监视器是</span><span style="letter-spacing: 0.4pt; color: black"><a target="_blank" href="http://baike.baidu.com/view/1646028.htm"><span style="color: #3366cc">闭路监控系统</span></a></span><span style="letter-spacing: 0.4pt; color: black">（</span><span style="letter-spacing: 0.4pt; color: black">cctv</span><span style="letter-spacing: 0.4pt; color: black">）组成部分，是监控系统的显示部分，是</span><span style="letter-spacing: 0.4pt; color: black"><a target="_blank" href="http://baike.baidu.com/view/130518.htm"><span style="color: #3366cc">监控系统</span></a></span><span style="letter-spacing: 0.4pt; color: black">的标准输出，有了监视器的显示我们才能观看前端送过来的图像。作为视频监控不可缺的</span><span style="letter-spacing: 0.4pt; color: black"><a target="_blank" href="http://baike.baidu.com/view/105503.htm"><span style="color: #3366cc">终端</span></a></span><span style="letter-spacing: 0.4pt; color: black">设备，充当着监控人员的</span><span style="letter-spacing: 0.4pt; color: black">“</span><span style="letter-spacing: 0.4pt; color: black">眼睛</span><span style="letter-spacing: 0.4pt; color: black">”</span><span style="letter-spacing: 0.4pt; color: black">，同时也为事后凋查起到关键性作用。监视器的发展经历了黑白到彩色，从闪烁到不闪烁，从</span><span style="letter-spacing: 0.4pt; color: black">CRT</span><span style="letter-spacing: 0.4pt; color: black">（阴极射线管）到</span><span style="letter-spacing: 0.4pt; color: black">LCD</span><span style="letter-spacing: 0.4pt; color: black">（液晶）的发展过程，每个过程都发生了很大的质的飞跃。从黑白到彩色，使得监控图像的单调世界迈向了五彩缤纷、色彩斑斓、图像逼真的世界；从闪烁到不闪烁，给监控工作人员带来了健康；从</span><span style="letter-spacing: 0.4pt; color: black">CRT</span><span style="letter-spacing: 0.4pt; color: black">（阴极射线管）到</span><span style="letter-spacing: 0.4pt; color: black">LCD</span><span style="letter-spacing: 0.4pt; color: black">（液晶）带来了环保，这是监视器的最终发展目标。监视器按尺寸分：</span><span style="letter-spacing: 0.4pt; color: black">5/8/10</span><span style="letter-spacing: 0.4pt; color: black">.4/12/15/17/19/20/22/26/32/37/40/42/46/52/57/65/70/82</span><span style="letter-spacing: 0.4pt; color: black">寸监视器等。按色彩分：彩色，黑白监视器</span><span style="letter-spacing: 0.4pt; color: black">。按材质分：</span><span style="letter-spacing: 0.4pt; color: black">CRT</span><span style="letter-spacing: 0.4pt; color: black">，</span><span style="letter-spacing: 0.4pt; color: black">LED</span><span style="letter-spacing: 0.4pt; color: black">，</span><span style="letter-spacing: 0.4pt; color: black">DLP,LCD</span><span style="letter-spacing: 0.4pt; color: black">等</span><span style="letter-spacing: 0.4pt; color: black">。按扫描方式分：纯平，逐行扫描等</span><span style="letter-spacing: 0.4pt; color: black">。按屏幕分：纯平，普屏，球面等。按品牌分：</span><span style="letter-spacing: 0.4pt; color: black">TCL</span><span style="letter-spacing: 0.4pt; color: black">监视器，</span><span style="letter-spacing: 0.4pt; color: black">Hizor</span><span style="letter-spacing: 0.4pt; color: black">监视器，</span><span style="letter-spacing: 0.4pt; color: black">SONY</span><span style="letter-spacing: 0.4pt; color: black">监视器，</span><span style="letter-spacing: 0.4pt; color: black">JVC</span><span style="letter-spacing: 0.4pt; color: black">监视器，</span><span style="letter-spacing: 0.4pt; color: black">G&S</span><span style="letter-spacing: 0.4pt; color: black">，等</span><span style="letter-spacing: 0.4pt; color: black">，按照用途分：安防监视器，监控监视器，电视台监视器，工业监视器，</span><span style="letter-spacing: 0.4pt; color: black"><a target="_blank" href="http://baike.baidu.com/view/2067893.htm"><span style="color: #3366cc">电脑监视器</span></a></span><span style="letter-spacing: 0.4pt; color: black">等</span><span style="letter-spacing: 0.4pt; color: black">，按类型分：液晶监视器</span><span style="letter-spacing: 0.4pt; color: black">背投</span><span style="letter-spacing: 0.4pt; color: black"> CRT</span><span style="letter-spacing: 0.4pt; color: black">监视器</span><span style="letter-spacing: 0.4pt; color: black">等离子</span><span style="letter-spacing: 0.4pt; color: black">，液晶监视器清晰度高、省电、寿命长（可达</span><span style="letter-spacing: 0.4pt; color: black">8</span><span style="letter-spacing: 0.4pt; color: black">万小时）、维护费用低，缺点是拼接的时候有拼缝，现在</span><span style="letter-spacing: 0.4pt; color: black">40</span><span style="letter-spacing: 0.4pt; color: black">、</span><span style="letter-spacing: 0.4pt; color: black">42</span><span style="letter-spacing: 0.4pt; color: black">、</span><span style="letter-spacing: 0.4pt; color: black">46</span><span style="letter-spacing: 0.4pt; color: black">寸的液晶监视器拼接缝隙大概是</span><span style="letter-spacing: 0.4pt; color: black">20MM</span><span style="letter-spacing: 0.4pt; color: black">左右，现在已经发展到</span><span style="letter-spacing: 0.4pt; color: black">6.7mm</span><span style="letter-spacing: 0.4pt; color: black">；背投的特点是无拼缝，缺点是体积大、耗电、寿命短（一般</span><span style="letter-spacing: 0.4pt; color: black">5000</span><span style="letter-spacing: 0.4pt; color: black">小时要换灯泡）亮度低（中间亮四周暗）</span><span style="letter-spacing: 0.4pt; color: black"> CRT</span><span style="letter-spacing: 0.4pt; color: black">该产品正被其余三种产品所替代。</span><span style="letter-spacing: 0.4pt; color: black">等离子优点是亮度对比度高。缺点是不适合显示静态画面（容易造成屏幕灼伤），耗电大，拼接有拼缝。按厂家分：日本索尼监视器，日本</span><span style="letter-spacing: 0.4pt; color: black">JVC</span><span style="letter-spacing: 0.4pt; color: black">监视器，深圳虎将监视器，珠海石头监视器，广州响石监视器，深圳浪维监视器，中国</span><span style="letter-spacing: 0.4pt; color: black">Hizor</span><span style="letter-spacing: 0.4pt; color: black">监视器，苏州台电监视器，惠州</span><span style="letter-spacing: 0.4pt; color: black">TCI</span><span style="letter-spacing: 0.4pt; color: black">监视器、深圳乐博监视器等。</span><span style="letter-spacing: 0.4pt; color: black">监视器也有分辨率，同摄像机一样用线数表示，实际使用时一般要求监视器线数要与摄像机匹配。</span><span style="letter-spacing: 0.4pt; color: black">另外，有些监视器还有</span><span style="letter-spacing: 0.4pt; color: black"><a target="_blank" href="http://baike.baidu.com/view/66105.htm"><span style="color: #3366cc">音频</span></a></span><span style="letter-spacing: 0.4pt; color: black">输入、</span><span style="letter-spacing: 0.4pt; color: black"><a target="_blank" href="http://baike.baidu.com/view/189661.htm"><span style="color: #3366cc">S-video</span></a></span><span style="letter-spacing: 0.4pt; color: black">输入、</span><span style="letter-spacing: 0.4pt; color: black"><a target="_blank" href="http://baike.baidu.com/view/17423.htm"><span style="color: #3366cc">RGB</span></a></span><span style="letter-spacing: 0.4pt; color: black">分量输入等，除了音频输入监控系统用到外，其余功能大部分用于</span><span style="letter-spacing: 0.4pt; color: black"><a target="_blank" href="http://baike.baidu.com/view/14662.htm"><span style="color: #3366cc">图像处理</span></a></span><span style="letter-spacing: 0.4pt; color: black">工作。</span></div>
<div style="text-align: left; line-height: 18pt; word-break: break-all" align="left"><b><span style="letter-spacing: 0.4pt; color: black">[<a href="http://baike.baidu.com/view/45702.html##"><span style="color: #3366cc">编辑本段</span></a>]</span></b></div>
<div style="text-align: left; line-height: 18pt; word-break: break-all" align="left"><b><span style="letter-spacing: 0.4pt; color: black; font-size: 18pt">监视器与电视区别</span></b></div>
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<div style="text-align: left; line-height: 18pt; word-break: break-all" align="left"><span style="letter-spacing: 0.4pt; color: black"> 监视器在功能上要比电视机简单但在性能上，却要求比</span><span style="letter-spacing: 0.4pt; color: black"><a target="_blank" href="http://baike.baidu.com/view/8625.htm"><span style="color: #3366cc">电视机</span></a></span><span style="letter-spacing: 0.4pt; color: black">要求高，其主要区别反映在三个</span><span style="letter-spacing: 0.4pt; color: black">“</span><span style="letter-spacing: 0.4pt; color: black">度</span><span style="letter-spacing: 0.4pt; color: black">”</span><span style="letter-spacing: 0.4pt; color: black">。</span></div>
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<div style="text-align: center; line-height: 13.5pt; margin: 2.25pt 0cm 0pt; word-break: break-all" align="center"><span style="letter-spacing: 0.4pt; color: #666666; font-size: 9pt">导演监视器图片</span></div>
<div style="text-align: left; line-height: 18pt; word-break: break-all" align="left"><span style="letter-spacing: 0.4pt; color: black"> </span><span style="letter-spacing: 0.4pt; color: black">1. </span><span style="letter-spacing: 0.4pt; color: black">图像清晰度</span></div>
<div style="text-align: left; line-height: 18pt; word-break: break-all" align="left"><span style="letter-spacing: 0.4pt; color: black"> 由于传统的电视机接收的是电视台发射出来的射频信号，这一信号对应的视频图像带宽通常小于</span><span style="letter-spacing: 0.4pt; color: black">6M</span><span style="letter-spacing: 0.4pt; color: black">，因而电视机的清晰度通常大于</span><span style="letter-spacing: 0.4pt; color: black">400</span><span style="letter-spacing: 0.4pt; color: black">线，要求监视器具有较高的图像清晰度，故专业监视器在通道电路上比起传统电视机而言应具备带宽补偿和提升电路，使之通频带更宽，图像清晰度更高。</span></div>
<div style="text-align: left; line-height: 18pt; word-break: break-all" align="left"><span style="letter-spacing: 0.4pt; color: black"> </span><span style="letter-spacing: 0.4pt; color: black">2. </span><span style="letter-spacing: 0.4pt; color: black">色彩还原度</span></div>
<div style="text-align: left; line-height: 18pt; word-break: break-all" align="left"><span style="letter-spacing: 0.4pt; color: black"> 如果说清晰度主要是由视频通道的幅频特性决定的话，还原度则主要由监视器中有红（</span><span style="letter-spacing: 0.4pt; color: black">R</span><span style="letter-spacing: 0.4pt; color: black">）、绿（</span><span style="letter-spacing: 0.4pt; color: black">G</span><span style="letter-spacing: 0.4pt; color: black">）、蓝（</span><span style="letter-spacing: 0.4pt; color: black">B</span><span style="letter-spacing: 0.4pt; color: black">）三基色的色度信号和亮度信号的相位所决定。由于监视器所观察的通常为静态图像，因而对监视器色彩还原度的要求比电视机更高，故专业监视器的视放通道在亮度、色度处理和</span><span style="letter-spacing: 0.4pt; color: black">R</span><span style="letter-spacing: 0.4pt; color: black">、</span><span style="letter-spacing: 0.4pt; color: black">G</span><span style="letter-spacing: 0.4pt; color: black">、</span><span style="letter-spacing: 0.4pt; color: black">B</span><span style="letter-spacing: 0.4pt; color: black">处理上应具备精确的补偿电路和延迟电路，以确保亮</span><span style="letter-spacing: 0.4pt; color: black">/</span><span style="letter-spacing: 0.4pt; color: black">色信号和</span><span style="letter-spacing: 0.4pt; color: black">R</span><span style="letter-spacing: 0.4pt; color: black">、</span><span style="letter-spacing: 0.4pt; color: black">G</span><span style="letter-spacing: 0.4pt; color: black">、</span><span style="letter-spacing: 0.4pt; color: black">B</span><span style="letter-spacing: 0.4pt; color: black">信号的相位同步。</span></div>
<div style="text-align: left; line-height: 18pt; word-break: break-all" align="left"><span style="letter-spacing: 0.4pt; color: black"> </span><span style="letter-spacing: 0.4pt; color: black">3. </span><span style="letter-spacing: 0.4pt; color: black">整机稳定度</span></div>
<div style="text-align: left; line-height: 18pt; word-break: break-all" align="left"><span style="letter-spacing: 0.4pt; color: black"> 监视器在构成闭路监控系统时，通常需要每天</span><span style="letter-spacing: 0.4pt; color: black">24</span><span style="letter-spacing: 0.4pt; color: black">小时，每年</span><span style="letter-spacing: 0.4pt; color: black">365</span><span style="letter-spacing: 0.4pt; color: black">天连续无间断的通电使用（而电视机通常每天仅工作几小时），并且某些监视器的应用环境可能较为恶劣，这就要求监视器的可靠性和稳定性更高。与电视机相比而言，在设计上，监视器的电流、功耗、温度及抗电干扰、电冲击的能力和裕度以及平均无故障使用时间均要远大于电视机，同时监视器还必须使用全屏蔽金属外壳确保电磁兼容和干扰性能；在元器件的选型上，监视器使用的元器件的耐压、电流、温度、湿度等各方面特性都要高于电视机使用的元器件；而在安装、调试尤其是元器件和整机老化的工艺要求上，监视器的要求也更高，电视机制造时整机老化通常是在流水线上常温通电</span><span style="letter-spacing: 0.4pt; color: black">8</span><span style="letter-spacing: 0.4pt; color: black">小时左右，而监视器的整机老化则需要在高温、高湿密闭环境的老化流水线上通电老化</span><span style="letter-spacing: 0.4pt; color: black">24</span><span style="letter-spacing: 0.4pt; color: black">小时以上，以确保整机的稳定性。</span></div>
<div style="text-align: left; line-height: 18pt; word-break: break-all" align="left"><span style="letter-spacing: 0.4pt; color: black"> 由上面的分析可见，如果使用电视机作为监控系统的终端监视器，除了可能感觉到图像较为模糊（清晰度较低、色彩还原度较差）之外，电视机使用的元器件也不适合无间断连续使用的要求。如果强行使用电视机作为监视器。轻则易于产生故障，严重时可能会由于电视机的工作温度过高而引起意外事故。</span></div>
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<div style="text-align: left; line-height: 18pt; word-break: break-all" align="left"><b><span style="letter-spacing: 0.4pt; color: black; font-size: 18pt">监视器磁化处理</span></b></div>
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<div style="text-align: left; line-height: 18pt; word-break: break-all" align="left"><span style="letter-spacing: 0.4pt; color: black"> 监视器为什么较易受磁化？如果监视器被磁化应如何处理？</span></div>
<div style="text-align: left; line-height: 18pt; word-break: break-all" align="left"><span style="letter-spacing: 0.4pt; color: black"> 地磁场和监视器显像管周边的带磁物质，如金属机柜的漏磁等均会使电子枪电子束产生附加偏转，影响色纯度和电子枪</span><span style="letter-spacing: 0.4pt; color: black">R</span><span style="letter-spacing: 0.4pt; color: black">、</span><span style="letter-spacing: 0.4pt; color: black">G</span><span style="letter-spacing: 0.4pt; color: black">、</span><span style="letter-spacing: 0.4pt; color: black">B</span><span style="letter-spacing: 0.4pt; color: black">三叔电子束的运动轨迹精度。另外，彩色显像管内部金属阴罩板及其支架以外部的防爆环等金属部件，在彩色监视器移动时将改变与地磁场的取向，地磁场间磁化这些部件，直接或间接地影响显像管的色纯度和会聚，在屏幕上将会造成某一局部的偏色。故此建议监视器摆放是尽可能南北摆放（屏幕垂直南北向）且远离磁性物体，尽可能减弱地磁场的影响。</span></div>
<div style="text-align: left; line-height: 18pt; word-break: break-all" align="left"><span style="letter-spacing: 0.4pt; color: black"> 监视器中设有自动消磁电路，监视器在每次开机使用时可以消除通常情况下</span><span style="letter-spacing: 0.4pt; color: black">CRT</span><span style="letter-spacing: 0.4pt; color: black">内部金属部件被外来磁场磁化的影响。</span></div>
<div style="text-align: left; line-height: 18pt; word-break: break-all" align="left"><span style="letter-spacing: 0.4pt; color: black"> 如果监视器被磁化（表现为色纯不良）现象较轻微的，多次开关机即可使被磁化的金属部件消磁；如果磁化严重即使多次开关机仍色纯不良的，则只好使用外部消磁的方法了。</span></div>
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<div style="text-align: left; line-height: 18pt; word-break: break-all" align="left"><b><span style="letter-spacing: 0.4pt; color: black; font-size: 18pt">CRT</span></b><b><span style="letter-spacing: 0.4pt; color: black; font-size: 18pt">监视器与</span></b><b><span style="letter-spacing: 0.4pt; color: black; font-size: 18pt">LCD</span></b><b><span style="letter-spacing: 0.4pt; color: black; font-size: 18pt">监视器性能区别</span></b></div>
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<div style="text-align: left; line-height: 18pt; word-break: break-all" align="left"><span style="letter-spacing: 0.4pt; color: black"> 使用阴极射线显像管（</span><span style="letter-spacing: 0.4pt; color: black">CRT</span><span style="letter-spacing: 0.4pt; color: black">）的彩色监视器和使用液晶显示屏（</span><span style="letter-spacing: 0.4pt; color: black">LCD</span><span style="letter-spacing: 0.4pt; color: black">）的彩色监视器在图像重现原理上是由区别的，前者采用磁偏转驱动实现行场扫描的方式（也称模拟驱动方式），而后者采用点阵驱动的方式（也称数字驱动方式）。因而前者往往使用电视线来定义其清晰度，而后者则通过像素数来定义其分辨率。</span><span style="letter-spacing: 0.4pt; color: black"> CRT</span><span style="letter-spacing: 0.4pt; color: black">监视器的清晰度主要有监视器的通道带宽和显像管的点距和会聚误差决定，而后者则由所使用</span><span style="letter-spacing: 0.4pt; color: black">LCD</span><span style="letter-spacing: 0.4pt; color: black">屏的像素数决定。</span><span style="letter-spacing: 0.4pt; color: black">CRT</span><span style="letter-spacing: 0.4pt; color: black">监视器具有价格低廉、亮度高、视角宽、使用寿命较高的优点，而</span><span style="letter-spacing: 0.4pt; color: black">LCD</span><span style="letter-spacing: 0.4pt; color: black">监视器则有体积小（平板形）、重量轻、图像无闪动无辐射的优点，但是</span><span style="letter-spacing: 0.4pt; color: black">LCD</span><span style="letter-spacing: 0.4pt; color: black">监视器的主要缺点是造价高、视角窄（侧面观看时图像变暗、彩色飘移甚者出现反色）、使用寿命短（通常</span><span style="letter-spacing: 0.4pt; color: black">LCD</span><span style="letter-spacing: 0.4pt; color: black">屏幕在烧机</span><span style="letter-spacing: 0.4pt; color: black">5000</span><span style="letter-spacing: 0.4pt; color: black">小时之后其亮度下降为正常亮度的</span><span style="letter-spacing: 0.4pt; color: black">60%</span><span style="letter-spacing: 0.4pt; color: black">以下，但</span><span style="letter-spacing: 0.4pt; color: black">CRT</span><span style="letter-spacing: 0.4pt; color: black">的平均寿命可达</span><span style="letter-spacing: 0.4pt; color: black"> 3</span><span style="letter-spacing: 0.4pt; color: black">万小时以上）等缺点。应该肯定的是：价格、视角和使用寿命是影响</span><span style="letter-spacing: 0.4pt; color: black">LCD</span><span style="letter-spacing: 0.4pt; color: black">监视器普及的三大瓶颈。当然，</span><span style="letter-spacing: 0.4pt; color: black">LCD</span><span style="letter-spacing: 0.4pt; color: black">作为平板显示器件的一项最为成熟的前沿产品，已越来越受到国内外有关厂家的重视，其技术正在不断地进步。目前新型采用面内切换技术的薄膜品体（</span><span style="letter-spacing: 0.4pt; color: black">TFT</span><span style="letter-spacing: 0.4pt; color: black">）工艺的</span><span style="letter-spacing: 0.4pt; color: black">LCD</span><span style="letter-spacing: 0.4pt; color: black">屏的水平视角已可达到</span><span style="letter-spacing: 0.4pt; color: black">160°</span><span style="letter-spacing: 0.4pt; color: black">、垂直视角已可达到</span><span style="letter-spacing: 0.4pt; color: black">140°</span><span style="letter-spacing: 0.4pt; color: black">；与此同时，</span><span style="letter-spacing: 0.4pt; color: black">LCD</span><span style="letter-spacing: 0.4pt; color: black">屏的价格将随着产品的逐步普及和产量的逐步上升而逐渐下降；</span><span style="letter-spacing: 0.4pt; color: black">LCD</span><span style="letter-spacing: 0.4pt; color: black">的使用寿命也将随着</span><span style="letter-spacing: 0.4pt; color: black">LCD</span><span style="letter-spacing: 0.4pt; color: black">背光源及液晶材料技术的不断进步而提高。因此无可置疑的是若干年后（可能是</span><span style="letter-spacing: 0.4pt; color: black">5</span><span style="letter-spacing: 0.4pt; color: black">年或</span><span style="letter-spacing: 0.4pt; color: black">10</span><span style="letter-spacing: 0.4pt; color: black">年之后）</span><span style="letter-spacing: 0.4pt; color: black">LCD</span><span style="letter-spacing: 0.4pt; color: black">监视器完全有可能取代</span><span style="letter-spacing: 0.4pt; color: black">CRT</span><span style="letter-spacing: 0.4pt; color: black">监视器成为监视器市场的主流产品。</span></div>
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