DDC commands to customize response-time acceleration, to allow third party software to create custom lookup tables for the monitor). By applying a voltage higher than the input signal to speed up response (overdrive) for the first image, and then drawing the second image with the original input signal, the liquid crystals are stabilized. For example, many G-SYNC monitors come with a 'ULMB' setting that can be turned ON/OFF. A strobed backlight remains off for a MUCH longer time with PWM than without PWM, and on for a shorter time, and strobing is synched to the refresh rate itself. At this time, these motion tests run with full VSYNC ON fluidity in Google Chrome browser on a GPU-accelerated system during full screen mode (F11). A 480fps+ camera is ideal (e.g. If you factor in 240hz backlight strobing, the msi 251rx is clearer than the 240hz acer predator. Many of our readers crave perfect motion clarity. A stationary camera is good for photographing pixel transitions statically. Amplified inversion artifacts, as seen in Lagom pixel-walk and TestUFO: Inversion. 2013 ADDED NOTE: This idea/research is being offered to any party for FOR FREE – Credit is only asked for (Name Mark Rejhon & website Blur Busters) for this idea, in someplace permanent, such as the references section of a subsequent patent application, or Credits section of a monitor manual, etc. For ultra-low persistence OLED’s, a rolling scan of about 1ms could be achieved, to produce ultra-low motion blur (useful for virtual reality applications as well). Published Jul 14, 2013 by Chief Blur Buster in: Area 51: Display Research Homebrew. The higher the refresh rate the better. Once pixel transitions completely fit within the “OFF” period, there’s no upper limit to motion clarity of LCD — motion is as clear as how briefly you flash the backlight. Motion Blur Reduction for displays (ULMB, LightBoost, DyAc, ELMB, etc) are now very common on modern 120Hz+ gaming monitors. Software-based response time acceleration prototyping: Some versions of the AMD Radeon drivers have had a GPU-based LCD Overdrive feature built in. With 250 watts of LED’s, it only gets about double the brightness of a 25 watt edgelight already built into a typical modern panel. on-off only or off-on only). Such older LCD’s should be avoided for strobe backlight conversion projects. “X” is the persistence value, for the length of the off-on-off cycle (not transition time, e.g. And you will get a LOT more flicker, because it’s 60Hz flicker, not 120Hz flicker. The backlight strobing is actually above average(yes, you can strobe at 240hz). Bear in mind that GPU buffering for response time acceleration can add input lag (especially during software-based prototyping), especially if you also use lookforward (overdrive calculations based on next refresh). The XL2546 is one of ZOWIE’s newer offerings, featuring a native 240hz panel along with their proprietary DyAc backlight strobing algorithm. One of the techniques discussed, was the use of strobing to reduce persistence. Screen seems fairly uniform and has no backlight bleed. However, it is not a complete representation of commonly perceived display motion blur and motion artifacts, because stationary camera excludes tracking-based motion blur. Example: 10fps@10Hz — PWM-free backlight 30fps@30Hz — PWM-free backlight 45fps@45Hz — PWM-free backlight 60fps@60fps — Minor backlight brightness undulations (bright / dim / bright / dim) 80fps@80Hz — Sharper backlight brightness undulations (very bright / very dim) 100fps@100Hz — Starts to resemble rounded-square-wave (fullbright / fulloff) 120fps@120Hz and up — Nearly square-wave strobing like original LightBoost. This will be reduced with a higher refresh rate, but can worsen ghosting. You can then keep things simple for an outsourced factory, while shifting most of the complexity to a firmware programmer located somewhere else (e.g. At the monitor’s maximum framerate, the strobing more resembles a square wave with large totally-black-gaps between strobes. Strobing Overview. Even local dimming found in high-end LCD televisions (contrast enhancement via turning off individual backlight LED’s behind the LCD panel), often only succeed in getting approximately about ~10:1 or 20:1 real-world contrast ratio amplification. Articles cite 240hz backlight strobing Busters, because it ’ s close to the LCD ’ s 60Hz flicker not... 72Hz LightBoost with potentially better color quality ( higher boost voltages ) 3 sine/gaussian-wave creates. Overall perceived motion blur reduction strobe backlight s maximum framerate, the flashes between between adjacent backlight! Gtg transitions more resemble a square wave, and experimenting with high refresh rate strobing motion! 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