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Generic names include black frame insertion and scanning backlight. Philips created Aptura, also known as ClearLCD, to strobe the backlight in order to reduce the sample time and thus the retinal blurring due to sample-and-hold. [7] [8] Samsung uses strobed backlighting as part of their "Clear Motion Rate" technology. [9]
LED backlights are often dimmed by applying pulse-width modulation to the supply current, switching the backlight off and on more quickly than the eye can perceive. If the dimming-pulse frequency is too low or the user is sensitive to flicker, this may cause discomfort and eyestrain similar to the flicker of CRT displays at lower refresh rates ...
In 2008, Apple introduced the unibody MacBook and MacBook Pro, which are made with recyclable aluminum and glass enclosures with arsenic and mercury-free displays. [6] It is also made with PVC-free internal components. The MacBook Air was the first Mac to use Mercury free backlight technology with arsenic-free LCD display glass. Along with that ...
If the object appears blurry, the display either has a continuously illuminated backlight or is operating the backlight at a frequency higher than the brain can perceive. The flicker can be reduced or eliminated by setting the display to full brightness, though this may have a negative impact on image quality and battery life due to increased ...
The flicker of a CRT monitor can cause various symptoms in those sensitive to it such as eye strain, headaches [9] in migraine sufferers, and seizures in epileptics. [10]As the flicker is most clearly seen at the edge of our vision there is no obvious risk in using a CRT, but prolonged use can cause a sort of retinal shock where the flickering is seen even when looking away from the monitor.
The iOS mobile operating system developed by Apple has had a wide range of bugs and security issues discovered throughout its lifespan, including security exploits discovered in most versions of the operating system related to the practice of jailbreaking (to remove Apple's software restrictions), bypassing the user's lock screen (known as lock screen bypasses), issues relating to battery ...
LCDs can either be normally on (positive) or off (negative), depending on the polarizer arrangement. For example, a character positive LCD with a backlight has black lettering on a background that is the color of the backlight, and a character negative LCD has a black background with the letters being of the same color as the backlight.
As part of the Mac transition to Intel processors, Apple released a 13-inch laptop simply named "MacBook", as a successor to the PowerPC-based iBook series of laptops. . During its existence, it was the most affordable Mac, serving as the entry-level laptop that was less expensive than the rest of the Mac laptop lineup (the MacBook Pro portable workstation, and later the MacBook Air ultra-port