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Usually the color is represented by all 16 bits, but some devices also support 15-bit high color. [1] In Windows 7, Microsoft used the term high color to identify display systems that can make use of more than 8-bits per color channel (10:10:10:2 or 16:16:16:16 rendering formats) from traditional 8-bit per color channel formats. [2]
In the EHB mode, when the sixth bit is set to on for any given pixel, the display hardware halves the brightness of said pixel. This allows the Amiga to display 64 colors instead of the standard 32, with the caveat being that the 32 extra colors cannot be arbitrarily selected, and must be darker versions of those already being displayed on screen
This chart shows the most common display resolutions, with the color of each resolution type indicating the display ratio (e.g., red indicates a 4:3 ratio).
Usually this is 10 bits each of red, green, and blue (10 bpc). If an alpha channel of the same size is added then each pixel takes 40 bits. Some earlier systems placed three 10-bit channels in a 32-bit word, with 2 bits unused (or used as a 4-level alpha channel); the Cineon file format, for example, used this.
Many manufacturers of projection screens thus define the viewing angle as the angle at which the luminance of the image is exactly half of the maximum. With LCD screens, some manufacturers have opted to measure the contrast ratio and report the viewing angle as the angle where the contrast ratio exceeds 5:1 or 10:1, giving minimally acceptable ...
(Early models used a 384×256 screen; both standards are cut down from the 720×364 of the preceding Lisa model) 512×342 (175k) 512 342 175,104 Very nearly 3:2 (to within 0.2%); 256:171 exact. Displayed with square pixels on a moderately wide-screen monitor (equivalent to 16:10.67 in modern terms). 1 bpp: Hercules
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The highest bit of the color attribute, which is also the highest bit of the background color can take over two functions. It can either have no influence on the background color making text blink when set, effectively limiting the available background colors to only eight, or if intensive background colors are enabled the full 16 colors become ...