Why is TruMotion so great?
The standard scanning rate for NTSC (North American standard) TV is 60 frames a second. Since 1080p is progressive scanning (where all odd and even lines of the picture are put onto the screen sequentially, that means that (with a standard refresh rate of 60Hz) the entire picture is displayed on the screen 60 times a second.
Higher refresh rates put the image onto the screen at the higher frequency (a refresh rate of 120 Hz will put the image onto the screen 120 times a second). But with standard increased refresh rate system, the image of the frame is displayed at time zero. At 1/120th of a second, that same image is regenerated and displayed. Then, at 2/120th (1/60th) of a second, the new picture image is displayed on the screen.
LG’s TruMotion system actually inserts a flash of a black screen in between the 1/120th of a second image and the 1/60th of a second image. This eliminates motion blur and picture artifacts (tearing) associated with other high refresh rate systems.
The end result?: eliminating motion blurring for fast moving images and enabling a realistic, crystal clear picture. The display also makes dark images even darker and bright images far brighter – providing unparalleled, vivid picture quality.
A few years ago, Sony spent a ton of money advertising their “Motionflow” technology which was categorically viewed by techies as being inferior to LG’s TruMotion technology and one big reason the Bravia was regarded as a bust.
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