Author Archive: Mark Rejhon
ARCHIVES: This is an older 2012 FAQ Frequently asked questions about flashing backlight technologies (scanning backlights, strobed backlights, black frame insertion), including how they work. Click the questions to see the answers. For info on ULMB / LightBoost / etc,...
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Prebuilt high-power switch for Arduino
Found a pre-made Arduino-compatible MOSFET switch for $18 each. Four of these 4-channel switches will be suitable for a 16-segment Arduino scanning backlight. These can switch well over 100 watts per segment, and at frequencies up to 200,000Hz; fast and...
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TestUFO & Motion Tests
This is a list of software and hardware benchmark tools available for testing ghosting and motion blur on LCD displays. We Recommend the Blur Busters UFO Motion Tests: www.testufo.com Other Motion Test Software Tests your browser’s support for VSYNC www.vsynctester.com...
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Arduino Photodiode Input Lag Tester
I have a breakthrough in a millisecond-accurate input lag tester, that is as almost as accurate as using as an oscilloscope and a photodiode. I am creating photographs on how you can construct your own inexpensive Arduino input lag meter....
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Existing HDTV Scanning Backlights
Some manufacturers have added scanning backlights to their high-end HDTV’s to reduce perceived motion blur. From Sony website (sony.com): “The model also features Sony’s MotionFlow XR 960 featuring a precise backlight control that is synchronized with the liquid crystal movement from frame to...
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Benchmark electronics prototyping
The Arduino and initial components for prototyping have been purchased and assembled. The prototype circuit for an upcoming 16-segment scanning backlight is currently being tested with simple LED’s (LED ribbons will be used instead in the near future). Arduino tests...
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Schematic diagram for scanning backlight
NOTE: This is a very old article. Newer article is Electronics Hacking: Creating a Strobe Backlight. This is a simplified schematic diagram for a home-made scanning backlight driven by an Arduino, an open-source electronics prototyping platform.The Arduino monitors the VSYNC...
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Arduino scanning backlight is viable
Positive comments have been received about the viability of my Arduino scanning backlight project on the various discussion forums, and from industry professionals including from John Carmack of iD Software on twitter! Mark Rejhon @mdrejhon @ID_AA_Carmack I’m researching home-made Arduino...
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Welcome!
Welcome! This blog records Mark Rejhon’s progress on a self-made scanning backlight modification for an existing LCD computer monitor, to reduce motion blur. This blog was born from the Arduino Scanning Backlight Project post made within threads on 120hz.net, Overclock.net, avsforum.com, and...
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