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Unlike VGA – a purely IBM-defined standard – Super VGA was defined by the Video Electronics Standards Association , an open consortium set up to promote interoperability and define standards. When used as a resolution specification, in contrast to VGA or XGA for example, the term SVGA normally refers to a resolution of 800 × 600 pixels.
HDMI lacks VGA compatibility and does not include analog signals. DVI is limited to the RGB color model while HDMI also supports YCbCr 4:4:4 and YCbCr 4:2:2 color spaces, which are generally not used for computer graphics. In addition to digital video, HDMI supports the transport of packets used for digital audio.
Display Data Channel (DDC) is a collection of protocols for digital communication between a computer display and a graphics adapter that enable the display to communicate its supported display modes to the adapter and that enable the computer host to adjust monitor parameters, such as brightness and contrast.
The result was equivalent to VGA or even PGC—but with a wide palette—at a point simultaneous with the IBM launch of VGA. Later, larger monitors (15" and 16") allowed use of an SVGA-like binary-half-megapixel 832×624 resolution (at 75 Hz) that was eventually used as the default setting for the original, late-1990s iMac.
HDMI 1.4b was released on October 11, 2011, [110] containing only minor clarifications to the 1.4a document. HDMI 1.4b is the last version of the standard that HDMI LA is responsible for. All later versions of the HDMI Specification are produced by the HDMI Forum, created on October 25, 2011. [34] [111]
Other equipment with display functionality includes monitors with more advanced interfaces and connectors giving a better picture, including analog VGA, and digital DVI, HDMI, and DisplayPort; and television (TV) receivers which are self-contained, receiving and displaying video RF broadcasts received with an internal tuner.