Like other ways of transmitting video, there are two different regions: the active region, where pixel data is sent, and the control region, where synchronization signals are sent. The active region is encoded using transition-minimized differential signaling, where the control region is encoded with a fixed 8b/10b encoding. As the two schemes yield different 10-bit symbols, a receiver can fully differentiate between active and control regions.

Docter, Quentin; Dulaney, Emmett; Skandier, Toby (2012). CompTIA A+ Complete Deluxe Study Guide: Exams 220-801 and 220-802. Indianapolis, Indiana: John Wiley & Sons, Inc. ISBN 978-1118324066.This adapter doesn’t convert the video signal from analog to digital; it simply changes the interface from VGA to DVI. With this knowledge in mind, you’ll be able to make informed decisions when selecting the right cable for your setup. Can DVI cables transmit 3D video signals? Fortunately, DisplayPort is compatible with DVI; you just need to buy the correct cable or adapter. DVI-A connectors have 17 (12+5) pins, do not have a dual-link option, and only carry analog signals. These signals are identical to VGA signals but are presented as an altered configuration. A VGA to DVI adapter is necessary to connect a VGA video card to a DVI-A monitor or a DVI-A video card to a VGA monitor. Due to VGA being the dominant connector for analog monitors and DVI as a standard for digital signals, DVI-A connectors are quite rare; instead, DVI-I and DVI-D connectors are more common. DVI-A cables will work with both DVI-A and DVI-I connectors. Male DVI-D cables may fit in a female DVI-A connector, but will not work as they do not carry any analog signals. Digital signals of 1920 x 1200p for single-link and 2560 x 1600p for dual-link. Analog signals can be up to 2048 × 1536p

Delving into the world of DVI cables, you may come across terms like dual-link and single-link. But what’s the difference in quality? HDMI has caught up to DVI in recent versions, as both can now output 144hz at 1080p. HDMI is now regarded as the superior option because the cable simply supports more advanced technology than DVI-D. The item(s) are returned within 30 days of cancellation. The 30 days start the day after you have notified us of the cancellation

Kruegle, Herman (2006). "8". CCTV Surveillance: Analog and Digital Video Practices And Technology. Butterworth-Heinemann. p.268. ISBN 0-7506-7768-6. However, unlike HDMI, DVI cables cannot carry audio data. So, using DVI means you still need a separate analog or digital audio connection between your source device and speakers or receiver. Specifications [ edit ] A passive DVI-to-VGA adapter. This adapter will not work with a DVI-D output. It requires a DVI-I or DVI-A output to get the analog signal to a VGA input (even if the adapter looks like a DVI-D). A more expensive active adapter (or converter) is required to connect DVI-D to VGA. Digital [ edit ] Overall, if you want the best possible digital image quality and have newer devices that are compatible with it, choosing a DVI- D cable is an excellent choice. DVI-A: Analog Signals Only