Hdmi, Dvi and Component Cables Explained

Background:

As the Hdtv store continues to heat up, consumers are in need of being educated on the newest technology in order to make fascinating purchasing decisions. There are a plethora of articles explaining the technical pros and cons of the 3 dominant Hdtv display technologies namely: Lcd, Plasma, and Dlp. However, one all- important, but overlooked highlight in choosing a Hdtv set is the type of Hd video connection. The video connections available for Hdtv are: component video, Dvi (digital video interface) and Hdmi (high definition multi-media interface). We will discuss briefly the pros and cons of each.

Top HDMI Cables

Component video cable generally referred to as R, G, B (Red, Green, Blue) surely consists of 3 isolate cables because it distributes the 3 former color components to the display. All colors can be generated from weighted distribution of each Red, Green and Blue color components. Of the 3 Hd relationship technologies available today, analog component video is the most mature technology.

-Advantage: Analog component video cable is mature and cost effective.

-Disadvantage: component video cables are analog! All Hdtv sets are inherently digital therefore extra digital to analog and analog to digital conversion is needful in order to process the video. This extra conversion can introduce video artifacts. Since all Hdtv's are digital, it only makes sense to use an all- digital relationship such as Dvi or Hdmi.

Dvi (digital video interface)as the name suggests is an all-digital video connection. Unlike analog component cables the Dvi interface transports the former digitized R,G, B video signals from the Hd source to the Hd display. Since it is all digital, no artifacts or degradation will be incurred. You will get Exactly the photo that the video source supplies with no degradation. Dvi relationship is often found on Hdtv as well as Pc video cards.

-Advantage : Dvi is All-digital, so there is no photo degradation from source to display.

-Disadvantage : Digitizing R, G, B requires very high bandwidth. The compound data rate of the digital R, G, B signals is 1.65 Gbps! The high bandwidth means that cable quality is prominent and also the link length is limited. Typical link allocation for a Dvi is ~ 15 ft.

Hdmi (high definition multi-media interface) is the newest state of art audio and video connection. Technically, Hdmi is identical to Dvi with 3 supreme differences. 1) Hdmi is a much smaller connector (it looks like an U.S.B. Connector), 2) Hdmi utilizes copy security called Hdcp (high definition copy protection) and 3) Hdmi carries multi channel digital audio. Hdmi, like Dvi, is All-digital therefore photo quality is "perfect" from source to display.

-Advantage: Hdmi is a particular digital video and Audio connection. Only 1 particular cable is needed to vehicle both audio and video! This significantly reduces cable clutter behind your theater setup.

-Disadvantage: Like Dvi, the link length is little and a high quality cable is required because of the inherently high bandwidth required to vehicle digital R, G, B. Video.

Conclusion:

As the Hdtv store continues to mature, consumers will need to be educated on the Hdtv video connections available. We have outlined briefly the main features along with the pros and cons of each relationship solution, so the buyer can make fascinating a selection in choosing the Hdtv video connections.

Hdmi, Dvi and Component Cables Explained

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