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LCD & OLED TV : 200 Hz, MCI, CMR, XR, PMR ...κ.λ.π.
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<blockquote data-quote="Yperion" data-source="post: 909822" data-attributes="member: 451"><p><strong>Re: Απάντηση: Re: Απάντηση: Re: LCD TV 200 Hz</strong></p><p></p><p><em>...<strong>However, only two LCD manufacturers are delivering true 240-Hz pixel performance. The rest are augmenting current 120-Hz technology with advanced backlight systems that, while improving picture quality beyond the capabilities of 120-Hz display systems, are not technically operating at 240-Hz pixel speeds</strong>. Call it pseudo-240-Hz, if you will. And there's a negative, too: one of the byproducts of pseudo-240Hz pixel tricks is a reduction in the overall brightness of the resulting picture...</em></p><p><em></em></p><p><em>The main reason why some manufacturers choose to use pseudo-240-Hz LCD technology is simple: cost. True 240-Hz LCD televisions currently require the use of two motion compensation/motion estimation (MCME) chips that help generate the interpolated frames used to enhance low frame rate video – particularly 24p video used to encode most movies – and the related costs are passed along to the consumer.</em></p><p><em></em></p><p><em>Sticking with a 120-Hz panel and utilizing such scanning backlight modules enables those manufacturers to keep prices low while improving picture performance. A significant downside to this method of LCD performance enhancement is a 50 percent decrease in overall picture brightness due to the pulsing nature of scanning backlight technology.... </em></p><p></p><p><a href="http://www.pcmag.com/article2/0,2817,2338779,00.asp" target="_blank">http://www.pcmag.com/article2/0,2817,2338779,00.asp</a></p></blockquote><p></p>
[QUOTE="Yperion, post: 909822, member: 451"] [b]Re: Απάντηση: Re: Απάντηση: Re: LCD TV 200 Hz[/b] [I]...[B]However, only two LCD manufacturers are delivering true 240-Hz pixel performance. The rest are augmenting current 120-Hz technology with advanced backlight systems that, while improving picture quality beyond the capabilities of 120-Hz display systems, are not technically operating at 240-Hz pixel speeds[/B]. Call it pseudo-240-Hz, if you will. And there's a negative, too: one of the byproducts of pseudo-240Hz pixel tricks is a reduction in the overall brightness of the resulting picture... The main reason why some manufacturers choose to use pseudo-240-Hz LCD technology is simple: cost. True 240-Hz LCD televisions currently require the use of two motion compensation/motion estimation (MCME) chips that help generate the interpolated frames used to enhance low frame rate video – particularly 24p video used to encode most movies – and the related costs are passed along to the consumer. Sticking with a 120-Hz panel and utilizing such scanning backlight modules enables those manufacturers to keep prices low while improving picture performance. A significant downside to this method of LCD performance enhancement is a 50 percent decrease in overall picture brightness due to the pulsing nature of scanning backlight technology.... [/I] [url]http://www.pcmag.com/article2/0,2817,2338779,00.asp[/url] [/QUOTE]
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