RGBLink VSP 729 - Manual (Page 22)

1. Introduction
Terms and Definitions
VSP 729 User Manual 22
number of devices being designed for USB continues to grow, from
keyboards, mice, and printers to scanners, digital cameras, and ZIP
drives.
 “VESA”: Video Electronics Standards Association. A nonprofit number
organization dedicated to facilitating and promoting personal computer
graphics through improved standards for the benefit of the end-user.
www.vesa.org
 “VGA”: Video Graphics Array. Introduced by IBM in 1987, VGA is an
analog signal with TTL level separate horizontal and vertical sync. The
video outputs to a 15-pin HD connector and has a horizontal scan
frequency of 31.5 kHz and vertical frequency of 70 Hz (Mode 1, 2) and
60 Hz (Mode 3). The signal is non-interlaced in modes 1, 2, and 3 and
interlaced when using the 8514/A card (35.5 kHz, 86 Hz) in mode 4. It
has a pixel by line resolution of 640×480 with a color palette of 16 bits
and 256,000 colors.
 “YCrCb”: Used to describe the color space for interlaced component
video.
 “YPbPr”: Used to describe the color space for progressive-scan
(non-interlaced) component video.