From 676b516d9b2de83ae21216d5fcfdd1a1056df9e5 Mon Sep 17 00:00:00 2001 From: Sonja Stage Date: Sat, 20 Sep 2025 08:15:00 +0800 Subject: [PATCH] Add As it Strikes across the Screen --- As-it-Strikes-across-the-Screen.md | 9 +++++++++ 1 file changed, 9 insertions(+) create mode 100644 As-it-Strikes-across-the-Screen.md diff --git a/As-it-Strikes-across-the-Screen.md b/As-it-Strikes-across-the-Screen.md new file mode 100644 index 0000000..76a8d00 --- /dev/null +++ b/As-it-Strikes-across-the-Screen.md @@ -0,0 +1,9 @@ +
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The video signal tells the CRT beam what its depth must be as it moves throughout the display screen. You possibly can see in the next figure the way in which that the video sign carries the intensity information. The initial five-microsecond pulse at zero volts (the horizontal retrace sign) tells the electron beam that it's time to begin a brand new line. The beam starts painting on the left facet of the screen, and zips throughout the display screen in 42 microseconds. The various voltage following the horizontal retrace sign adjusts the electron beam to be brilliant or dark as it shoots across. The electron beam paints lines down the face of the CRT, and then receives a vertical retrace sign telling it to start out once more on the higher right-hand nook. A colour display screen does the identical thing, but uses 3 separate electron beams and 3 dots of phosphor (red, inexperienced and [EcoLight LED](https://wiki.fuzokudb.com/fdb/The_GeoBulb_LED_Light_Bulb) blue) for every pixel on the screen.
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A separate coloration signal signifies the coloration of every pixel because the electron beam moves across the show. The electrons in the electron beam excite a small dot of phosphor [EcoLight LED](https://freekoreatravel.com/index.php/User:RichGormly) and the display screen lights up. By rapidly painting 480 lines on the display screen at a rate of 30 frames per second, the Tv screen permits the eye to combine every little thing right into a clean moving image. CRT expertise works nice indoors, [EcoLight LED](https://sakumc.org/xe/vbs/2452431) but as quickly as you put a CRT-based mostly Tv set outside in shiny sunlight, you cannot see the show anymore. The phosphor on the CRT simply is just not shiny sufficient to compete with sunlight. Also, CRT shows are limited to a couple of 36-inch display. You want a unique expertise to create a large, outdoor display that is bright sufficient to compete with sunlight. It is perhaps 60 ft (20 meters) high as an alternative of 18 inches (0.5 meters) excessive. It is incredibly vivid so that individuals can see it in sunlight. To accomplish these feats, virtually all massive-screen outdoor shows use mild emitting diodes (LEDs) to create the image.
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Fashionable LEDs are small, extraordinarily vivid and use comparatively little power for the sunshine that they produce. Different places you now see LEDs used outdoors are on visitors lights and automobile brake lights. In a jumbo Television, pink, inexperienced and blue LEDs are used as a substitute of phosphor. A "pixel" on a jumbo Tv is a small module that can have as few as three or 4 LEDs in it (one crimson, one green and one blue). In the largest jumbo TVs, each pixel module could have dozens of LEDs. Pixel modules usually vary from four mm to 4 cm (about 0.2 to 1.5 inches) in dimension. To build a jumbo Tv, you take hundreds of those [EcoLight LED](http://jicc.kr/bbs/board.php?bo_table=hosung3&wr_id=588228) modules and arrange them in a rectangular grid. For [EcoLight dimmable](http://chunzee.co.kr/bbs/board.php?bo_table=free&wr_id=140970) example, the grid might contain 640 by 480 LED modules, or 307,200 modules. To manage a huge LED display screen like this, [EcoLight](https://tnij.uk/manueledward31) you use a pc system, a power management system and quite a lot of wiring.
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The computer system looks on the incoming Television sign and decides which LEDs it'll activate and the way brightly. The pc samples the intensity and [EcoLight](https://hwekimchi.gabia.io/bbs/board.php?bo_table=free&tbl=&wr_id=976948) coloration signals and interprets them into intensity information for the three completely different LED colours at every pixel module. The power system supplies power to all of the LED modules, and [energy-efficient bulbs](https://santo.kr:443/bbs/board.php?bo_table=free&wr_id=131215) modulates the ability so that each LED has the best brightness. Turning on all of these LEDs can use a variety of energy. A typical 20-meter jumbo Tv can eat as much as 1.2 watts per pixel, or roughly 300,000 watts for the total display. Several wires run to each LED module, so there are a whole lot of wires running behind the display. As LED prices have dropped, jumbo Television screens have began to pop up in all kinds of locations, and in all types of sizes. You now discover LED TVs indoors (in places like buying malls and workplace buildings) and [EcoLight LED](http://zhadanchaoren.dhlog.com/viewthread.php?tid=97517&extra=) in all types of out of doors environments -- particularly areas that attract a number of vacationers. For extra info on LED screens and associated subjects, try the hyperlinks on the following page. The large screens at concerts are known as jumbotron or generally jumbovision.
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