Author Archive: Mark Rejhon

About Mark Rejhon

Also known as Chief Blur Buster. Founder of Blur Busters. Inventor of TestUFO. Read more about him on the About Mark page.

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Biggest FreeSync 2 display at 49 inches! With HDR and Blur Reduction

Posted Jun 10, 2017 by Mark Rejhon in: FreeSync Monitors

Samsung announced the C49HG90, the world's biggest ultrawide FreeSync display, at whopping 49 inches with 144Hz, HDR, FreeSync 2, in a 32:9 aspect ratio, with a blur reduction...

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Apple’s new iPad supports 120Hz and Variable Refresh Rates

Posted Jun 5, 2017 by Mark Rejhon

At WWDC2017 today, Apple announces their new new iPad supports 120Hz and variable refresh rates: “The Most Advanced Display Featuring ProMotion: The stunning, redesigned Retina® display in iPad Pro features ProMotion, a new technology that delivers refresh rates of up to 120Hz for fluid...

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Adding Variable Refresh Rate Support to HTML 5.2

Posted May 11, 2017 by Mark Rejhon in: Web Browsers

Variable refresh rate technologies are getting standardized as VESA Adaptive-Sync, HDMI 2.1 VRR, FreeSync, in addition to G-SYNC. Microsoft’s Scorpio Project (the next XBox) is already planned to support variable refresh rate. Mark of Blur Busters is now an Invited Expert in...

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Strobe Crosstalk: Double-Image Effect

Posted May 4, 2017 by Mark Rejhon in: Display Motion Blur

Strobe crosstalk are double-image-effects during Motion Blur Reduction on gaming displays. We explain why this happens, and how this can be...

Strobe Crosstalk: Blur Reduction Double-Images

Posted May 3, 2017 by Mark Rejhon Area 51: Display Research

Strobe crosstalk are double-image-effects during Motion Blur Reduction on gaming displays. We explain why this happens, and how this can be...

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This is the vertical blanking interval. It allows displays to synchronize to the next refresh cycle. We used to see it on analog TVs in 1930s through 1980s when the picture rolled during lost sync. Known as vertical synchronization, aka VSYNC (it is also padded with Front Porch and Back Porch) This hidden sync signal still exists in digital signals, DVI, HDMI, DisplayPort, and is seen on PCs and Macs via Custom Resolution Utilities.

Photo of an analog VSYNC signal

Posted May 2, 2017 by Mark Rejhon in: FreeSync

Games and graphics card often have a VSYNC ON or VSYNC OFF setting. But have you ever wondered where VSYNC comes from? It stands for Vertical Synchronization. From the video signal perspective, it is a signal to the display to begin...

Blur Busters Working On Changes To HTML 5.2

Posted May 1, 2017 by Mark Rejhon Industry Standards

Mark Rejhon – aka Chief Blur Buster – is now W3C Invited Expert As creator of Blur Busters as well as TestUFO, I also have industry standards writing experience (XMPP extension XEP-0301) and a peer reviewed conference paper (display pursuit camera...

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New 2017 Strobe Utility Supports Zowie Monitors

Posted Apr 29, 2017 by Mark Rejhon in: Display Motion Blur

Blur Busters Strobe Utility is now Zowie compatible! In addition to several BenQ Z-Series monitors, the Zowie L2411, XL2420 and XL2720 are now supported....

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Engineering for High Quality Display Motion Blur Reduction

Posted Apr 21, 2017 by Mark Rejhon in: Area 51: Display Research Display Motion Blur

Some gaming monitor manufacturers are better than others in doing Motion Blur Reduction (e.g. LightBoost, ULMB, MOTION240, DyAC). We explain why this is a difficult engineering...

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High Speed Video of Strobe Backlight

Posted Apr 21, 2017 by Mark Rejhon in: Area 51: Display Research Display Motion Blur

Strobe backlights such as ULMB and LightBoost eliminate motion blur on LCD displays. Several 120 Hz+ monitors now have a refresh-synchronized strobe backlight feature (e.g. LightBoost, ULMB, etc) that can be enabled, to allow CRT crystal clear motion on LCD. This high-speed...

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Microsoft EDGE browser still stuck at 60Hz in W3C violation

Posted Apr 20, 2017 by Mark Rejhon in: Web Browsers

Unfortunately, the Microsoft EDGE web browser still does not support 120Hz+ on over 100+ gaming monitors. Chrome & FireFox teams purchased 120Hz+ monitors and fixed their browsers years ago. Why hasn't...

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Dell 30″ OLED 4K monitor has motion blur reducing strobe mode

Posted Apr 19, 2017 by Mark Rejhon in: Display Motion Blur OLED

The Dell U3017Q OLED monitor, while a 60Hz display, apparently has an optional motion blur reducing mode via a pulsed rolling-scan. A possible precursor to future Holy Grail gaming/eSports...

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