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发表于 2011-5-28 03:01 · 上海
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场迎战主场迎战60赫兹的120Hz 240Hz 480Hz的对比 - LCD响应速度
Definitions Applications LCD TV Response Time 定义 应用程序 响应时间液晶电视
Applications应用
By: Robert Wiley and Jack Burden上传者： 罗伯特Wiley和杰克伯登
First, a note about why LCD TV manufacturers are attempting to increase the effective refresh rate (also called response rate) on their televisions.首先，注意的一个有效的液晶电视制造商为何试图提高刷新率回应率）在他们的电视（也称。 Well, it stands to reason that there would be no increase if there were not a problem of some sort to begin with.嗯，按理说，就不会有增加，如果有没有某种形式的问题开始。 For instance, you never hear of plasma TV manufacturers claiming increased Hz rate technology.例如，你永远不会听到更多的等离子电视制造商声称赫兹一流的技术。
120/240Hz Reviews 120/240Hz评论
See how these refresh rates perform in the real world in these 120 and 240Hz LCD TV Reviews.看看这些更新率在现实世界中履行上述120和240Hz液晶电视评论。
Samsung LN55C650 Review 三星LN55C650回顾
Sony KDL-52EX700 Review 索尼KDL - 52EX700回顾
LG 47LE8500 Review LG电子47LE8500回顾
Indeed there is a problem – motion lag.事实上，有一个问题 - 运动滞后。 Motion lag results when the images displayed on the screen are moving quickly, or in some cases panning side to side slowly.运动滞后的结果时，屏幕上显示的图像移动很快，或在某些情况下平移一边到另一边缓慢。 In the former, a subtle blur can be seen on the screen as the LCD TV frame rate conversion struggles to keep up with the speed of the programming content – sports action is a good example of this.在前者，一个微妙的模糊，可以在屏幕上看到的液晶电视帧速率转换的斗争，以配合节目内容的加快 - 体育动作是一个很好的例子。 In the second case, a jerky appearance called "judder" can appear as the LCD has a hard time accurately displaying the moving image even though it may be moving slowly.在第二种情况下，生涩的外观称为“抖动”可以出现的液晶有一个很难准确地显示动态影像，即使它可能会移动缓慢。 This results from a combination of the internal processing chips in the LCD TV and the response rate of the TV.从在液晶电视和电视机的响应率的内部处理芯片组合这样的结果。
So manufacturers are doing all they can to eliminate or lessen the effects of these problems.因此制造商都在竭尽所能，消除或减轻这些问题的影响。 They have recently increased the refresh rate or response time to 120Hz and 240Hz as a premium feature on some of the newest high end LCD TVs.他们最近增加了刷新率或响应时间， 120Hz和240Hz的液晶电视上的一些高端功能溢价的最新高。 How much does it help?多少帮助？
It does a great deal to cut down on motion induced artifacts – especially with fast motion scenes.它大量削减对运动诱导的文物 - 特别是快速运动的场景。 It decreases motion lag and judder.它减少运动滞后和抖动。 However, there are nasty side effects you should know about.但是，也有讨厌的副作用，你应该知道的。 When viewing film and broadcast programming in 120Hz/240Hz we see unwanted background noise introduced.当观看电影和电视节目中120Hz/240Hz我们看到不必要的背景噪音的介绍。 Many of the tricks movie producers and programmers employ to create depth and give background information a background look are unraveled and what results is a distracting lack of depth.电影制片人的技巧和程序员许多雇用创建深入的背景资料，让背景看，什么都解开结果是一个缺乏深度分心。 Cinematography is impaired.摄影受损。 In some film reproduction, the background set becomes so clear that you can see the cheap tricks used in the studio to create an effect of say stones in the background.在一些电影的复制，背景设置变得非常清楚，你可以看到在演播室说，创建一个在后台石头效果廉价把戏。 With 120Hz/240Hz you can see that they are plastic.随着120Hz/240Hz你可以看到他们是塑料的。 It causes unnatural appearance of the image popping out of the background especially in when foreground characters are moving slowly.它会导致出现不自然的形象突然出现的背景下，特别在前景字符时进展缓慢。
You might think this increase in detail of background information is a good thing, but it gives the content a kitschy, plastic, cardboard cutout look that is very unappealing.你可能认为这在详细背景资料的增加是一个好东西，但它给人的内容的俗气，塑料，纸板剪影看，这是非常吸引人。 This is why we only recommend using the 120Hz/240Hz feature for sports programming and gaming where the increased information works to the viewers advantage.这就是为什么我们只推荐使用体育节目和游戏的120Hz/240Hz的功能，使信息工程，以增加观众的优势。 Thankfully, thus far manufacturers have introduced the 120Hz/240Hz feature as an option that can be turned off and on (though not with a discrete button on the remote control).幸运的是，到目前为止，厂商纷纷推出了作为一个可开启和关闭（用遥控器上的按钮虽然不是离散）选项120Hz/240Hz功能。 In our recent reviews of the Samsung LN-52A850 , the LG 47LH55 , and the Samsung UN55B8000 we note instructions on how to turn the 120Hz/240Hz features off.在回顾了我们最近三星的LN - 52A850中， LG电子47LH55 ，而三星UN55B8000我们注意到了关于如何把120Hz/240Hz功能。
LED & LCD TVs Recommended By Size按尺寸LED及液晶电视推荐
15" LCD TV 15“液晶电视
26" LCD TV 26“液晶电视
42" LCD TV 42“液晶电视
19" LCD TV 19“液晶电视 32" LCD TV 32“液晶电视 46" LCD TV 46“液晶电视
20" LCD TV 20“液晶电视 37" LCD TV 37“液晶电视 52" LCD TV 52“液晶电视
In 2009 the 240Hz rate specification worked in two ways. 2009年，240Hz率规范工作在两个方面。 Some manufacturers used LED backlight manipulation as a mechanism which produced an "effective" 240Hz "appearance."一些制造商使用的LED背光作为一种机制，产生了“有效”240Hz操纵“的出现。” This was a somewhat ridiculed claim by those manufacturers that produced a true 240Hz refresh rate.这是一个由那些制造商，产生了真正的240Hz刷新率有点嘲笑索赔。 Those manufacturers produced a true 240Hz refresh rate by increasing the pixel activation speed in the LCD panels - thus redrawing the screen 240 times per second.这些厂家生产，增加在液晶面板像素触发速度真正240Hz刷新率 - 从而重绘屏幕每秒240次。 Though it seems that this improvement would cut motion blur in half, our testing shows only a marginal decrease in motion blur from 120Hz.虽然这似乎改善将减少运动模糊了一半，我们的测试显示，只有在从120Hz的运动模糊的轻微跌幅。 Some 120Hz, 240Hz, 480Hz technologies incorporate unwelcome background information into film based material and are only good for viewing fast motion sports programming.有些120Hz的，240Hz，480Hz的技术基础的材料纳入电影不受欢迎的背景资料，且仅限于观看快速运动的体育节目很好。 Fortunately, in all TVs that we have tested, the Hz rate feature may be turned off.幸运的是，我们测试的所有电视机上，Hz的频率功能可能被关闭。 We recommend this with certain manufacturers as of this writing.我们建议作为撰写本文某些制造商的。 (See our reviews to find out which manufacturers we recommend this for). （参见我们的检讨，以找出哪些制造商，我们推荐这个）。
"A higher Hz rate in the panel produces a picture with less motion artifacts during fast motion and side to side pannning" “较高赫兹在面板生产速度在快速运动和运动较少的一侧到另一侧pannning文物图片” Recently, at CES 2010 a couple of manufacturers have introduced a 480Hz specification on some LED-LCD TVs.最近，在2010年国际消费电子展的厂商夫妇介绍了关于一些LED液晶电视480Hz的规范。 As of this writing all of these specifications are of the LED backlight manipulation variety, as opposed to a true 480Hz refresh rate.在撰写本文所有这些规格的LED背光源的各种操作，而不是一个真正的480Hz的刷新率。 Thus the question, "Does the 480Hz specification offer an improvement in TV viewing or is it just a stated numerical improvement that has no bearing on the performance of the TV."这样的问题：“是否480Hz的规范提供了一个在电视收视改善或说是它只是一个数值改善，并没有对电视机的性能影响。” From our experience, unfortunately we will at this time will side with the latter stance.从我们的经验，很遗憾，我们会在这个时候将支持后者的立场。 We will certainly review this new specification with scepticism, meanwhile giving it a fair shot.我们一定会检讨这个新规范的怀疑，同时给它一个公平的机会。 We suspect it will have about as much impact on picture quality performance as say a contrast ratio specification going from 2 million to 1, to 4 million to 1 - which we have proven as specification eyewash (see article Contrast Ratio: Are Manufacturers Specifications Important ).我们怀疑它的质量方面也没有太大的影响表现在图片作为对比度规范说要200万至1，400万至1 -我们已被证明是规范洗眼文章（见对比度：是厂家标准重要 ） 。 Just because the specification is there, doesnt make it so.正因为有规范，doesn't这样做。
So just to sum it up.所以只是来概括。 In 2008 there was an increase from 60Hz rate to 120Hz rate in LCDs.在2008年有一个来自60Hz的速率提高到120Hz的LCD的速度。 In 2009 there were two varieties of Hz rate improvements to 240Hz, and in 2010 we saw a manipulated LED backlight specification to 480Hz inrtoduced.在2009年有两种频率为240Hz改善品种，并在2010年我们看到了一个操作规范，以480Hz的LED背光inrtoduced。 The improvement from 60Hz to 120Hz is the most significant of these and the one showing the most dramatic reduction in motion blue and a smoother side to side panning.从60赫兹提高到120Hz是这些和一个蓝色显示在运动最引人注目的减少，光滑的一面到另一侧平移最重要的。 The true 240Hz rate improvement in 2009/2010 gives a marginal increase of 30% better than the 120Hz.真正的改善率在2009/2010 240Hz给出了30％，比120Hz的更好的轻微升幅。 As of this writing we predict the 480Hz LED backlight manipulation specification will not yield an actual improvement in picture quality performance.在撰写本文时，我们预测的480Hz的LED背光操作规范将不可能产生出的图像质量性能的实际改善。 A true 480Hz refresh rate has not been introduced.一个真正的480Hz的刷新频率并没有被引入。 We believe this would improvement would result in a 15 to 20% improvement over the 240Hz rate spec.我们相信这将改善将导致利率比240Hz规格15至20％的改善。
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