Search found 66 matches
- 29 Dec 2014, 16:35
- Forum: Input Lag / Display Lag / Network Lag
- Topic: Inherent click delay found in mice.
- Replies: 47
- Views: 47459
Re: Inherent click delay found in mice.
This part is what threw me off: In mice, debounce has to be of the "call state stable after Xms" type as opposed to the "call state unstable for Xms after event" type sometimes found in keyboards. I interpreted this as the mouse waiting until it gets multiple like reads of the button before reportin...
- 29 Dec 2014, 14:00
- Forum: Input Lag / Display Lag / Network Lag
- Topic: Inherent click delay found in mice.
- Replies: 47
- Views: 47459
Re: Inherent click delay found in mice.
Debounce doesn't have to delay the initial pressed status, and if the button is held by the user for more than 10-20ms, then release doesn't have to be delayed by debounce either. In both cases, the controller waits for a button state change, immediately reports it, and then ignores changes for 10ms...
- 22 Dec 2014, 17:33
- Forum: General — Displays, Graphics & More
- Topic: Laser projectors general? [zero lag & zero blur!!!]
- Replies: 241
- Views: 227114
Re: Laser projectors general? [zero lag & zero blur!!!]
As I understand it, VGA, DVI, HDMI, DisplayPort, etc. all send the image in the usual scanline fashion, thus there is no need for any lag for any format. The display buffer size determines lag. If it only buffers one scanline at most, then added display lag is at most a fraction of a millisecond. Pa...
- 22 Dec 2014, 14:30
- Forum: General — Displays, Graphics & More
- Topic: Laser projectors general? [zero lag & zero blur!!!]
- Replies: 241
- Views: 227114
Re: <
I imagine that a multi-faceted (e.g. polygonal) mirrored spinning cylinder would easily be able to scan a laser beam back and fourth 135,000 times a second while spinning far more slowly. i'm not so sure about the "far more slowly" part. even with a six sided prism/mirror you'd need 135000/6 = 2250...
- 16 Dec 2014, 12:17
- Forum: Area 51: Display Science, Research & Engineering
- Topic: Pixel behaviour in sample and hold, in unchanging image.
- Replies: 24
- Views: 22206
Re: Pixel behaviour in sample and hold, in unchanging image
The alternating polarity is to avoid migration of the ionic substances to one electrode and damage as a result (electroplating).
- 16 Dec 2014, 01:30
- Forum: Area 51: Display Science, Research & Engineering
- Topic: Pixel behaviour in sample and hold, in unchanging image.
- Replies: 24
- Views: 22206
Re: Pixel behaviour in sample and hold, in unchanging image
My obvious google search found something describing TN operation that makes sense. My understanding of that page: Normally the crystals form a twist, which twists the polarization of the light. When a field is applied, the crystals align end-to-end between the two electrodes, eliminating the polariz...
- 15 Dec 2014, 14:29
- Forum: Area 51: Display Science, Research & Engineering
- Topic: Pixel behaviour in sample and hold, in unchanging image.
- Replies: 24
- Views: 22206
Re: Pixel behaviour in sample and hold, in unchanging image.
There's a stepped behavior in LCD response. Each voltage pass (LCD scanout) is a kick of momentum that pushes the LCD pixel closer to its final color value. Doesn't the LCD hold the voltage between passes? What causes there to be a kick each pass if the same voltage is held each time? Perhaps the a...
- 13 Dec 2014, 14:43
- Forum: BENQ Zowie Tweaking — Strobe Utility / Blur Reduction / DyAc
- Topic: XL2411Z V2, my findings so far [settings, VT1500 trick, etc]
- Replies: 120
- Views: 160170
Re: XL2411Z V2, my findings so far [settings, VT1500 trick,
Higher VT allows a longer strobe without increasing top/bottom LCD artifacts, so in a way it makes things brighter. It doesn't of course mitigate the inherent tradeoff between strobe length and eye-tracking-induced motion blur (only higher LED backlight current can escape this tradeoff).
- 12 Dec 2014, 21:59
- Forum: General — Displays, Graphics & More
- Topic: Laser projectors general? [zero lag & zero blur!!!]
- Replies: 241
- Views: 227114
Re: Laser projectors general?
Laser technology also seems such that it's quite approachable by the hobbyist. You need some laser diodes, a brightness modulator circuit (high bandwidth so perhaps tricky), an X/Y mirror (also pretty high speed), and an FPGA and CPU combination for the controlling software. It's nothing like trying...
- 12 Dec 2014, 21:54
- Forum: Offtopic Lounge
- Topic: Motion blur in old photography - long exposures 19th century
- Replies: 3
- Views: 8923
Re: Motion blur in old photography - long exposures in 1800s
Oh nice, this sets up a continuum between that image above of the eerily empty city, and a monitor with strobing. As the strobe gets longer, things get blurry (more faint at the edges). As persistence lengthens, the blurry edge consumes the object and thus the whole object gets more faint. Keep incr...