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看了这篇文章,作者对sony的xr后面所标数字的解释也是很不满,文章还说sony已经开始(应该是好几年前了)在网站上取消了真实刷新率,只标xr数字了。
Sony uses the term Motionflow XR followed by a 240, 480 or 960 depending on the model. We contacted Sony to explain what these numbers mean. A spokesperson cited three functions to determine the “XR” number:
“Frame insertion (interpolation), LED backlighting blinking (line blinking), and Image Blur reduction via signal processing. So, for example, a Motionflow XR 960 can be found by multiplying the native refresh times four (240 x 4=960) or as Sony told us: “With frame interpolation, four distinct images in the same time period of 1/60th of a second. 240 Hz times 4 = 960″
We don’t understand this explanation as it implies the TV creates at least 15 frames for every native frame, and we know of no TV signal processor with that kind of capability. 240 Hz is the most interpolation of any signal processors we are aware of available in any HDTV. Sony would not supply us with any type of test procedure used to determine how the Motionflow XR rate is created.
Sony has begun removing the true refresh rate in its specifications on the Sony website and substituting its proprietary a Motionflow XR number. For example its new KDL55EX640 only lists the TV as Motionflow XR240. Is this a 60 HZ model with backlight blinking and image blur processing, or a 120 Hz model with just backlight blinking? There is no way to tell unless you do what we did: We called Sony customer service. They revealed this series has a native refresh rate of just 120 Hz. |
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