I do not understand why anyone who could run an LCD display digitally would choose not to.
Digital signals do away with the considerable artifacts produced by twice converting the video signal before it is displayed, first from digital to analog in the video card and then from analog to digital in the LCD display.
Though a digital signal refreshes an LCD display only 60 times per second, flicker is not an issue as it would be with a CRT. The phosphors of CRT subpixels must be frequently excited to produce light; their intensity fades very quickly when not being bombarded by electrons, so that at a slow refresh rate, even 60Hz, the phosphors? excite-fade-excite is visible?as flicker. By contrast, LCD subpixels are either on or off, meaning there is no fading of the picture and consequently no flicker. At 60 frames per second, motion does appear fluid.
Finally, running an LCD display digitally, the matter of response time is very straight forward. The digital signal refreshes the display 60 times per second (60Hz), which means a new frame is displayed every 16.667 milliseconds. Therefore, for blur-free images, the monitor needs a response time of 16 milliseconds, no faster or slower. A faster refresh rate will not improve a digital signal?s picture.
With Hitachi?s newest LCD display, we have the response time we need. All we need now are LCD monitors that can reproduce color well . . .
Digital signals do away with the considerable artifacts produced by twice converting the video signal before it is displayed, first from digital to analog in the video card and then from analog to digital in the LCD display.
Though a digital signal refreshes an LCD display only 60 times per second, flicker is not an issue as it would be with a CRT. The phosphors of CRT subpixels must be frequently excited to produce light; their intensity fades very quickly when not being bombarded by electrons, so that at a slow refresh rate, even 60Hz, the phosphors? excite-fade-excite is visible?as flicker. By contrast, LCD subpixels are either on or off, meaning there is no fading of the picture and consequently no flicker. At 60 frames per second, motion does appear fluid.
Finally, running an LCD display digitally, the matter of response time is very straight forward. The digital signal refreshes the display 60 times per second (60Hz), which means a new frame is displayed every 16.667 milliseconds. Therefore, for blur-free images, the monitor needs a response time of 16 milliseconds, no faster or slower. A faster refresh rate will not improve a digital signal?s picture.
With Hitachi?s newest LCD display, we have the response time we need. All we need now are LCD monitors that can reproduce color well . . .
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