Sunday, 29 April 2012

Unique Content Article on HDMI cables,home entertainment

How Do HDMI Cables Work


by Kihoha Layinda


Electronics require connections to transfer content between themselves. Monitors require VGA connectors to attach to video card and SCART cables connect older televisions to DVD players. However, there are so many more connections that improve the quality and compatibility between them all. High-Definition Multimedia Interface connections have become a mainstream connector for new, high-end electronics, such as televisions. The basic explanation of HDMI is that it converts analog signals to digital, allowing for much better image quality. Let's look and see how do HDMI cables work.

The HDMI Innards

All connectors are made up of a certain number of pins. The High-Definition Multimedia Interface connection has 19 pins. These pins provide a number of purposes, such as power, compatibility, data transfer, etc. The first nine pins focus on analog to digital conversion. The three data channels each have a respective pin to control them. Two further pins control the data flow for the nine pins, while the remaining pins control power and communications between the connected electronics.

Versions

HDMI has been updated several times through its nine-year long existence. Originally, the basics were supported, such as standard RGB and YCbCr, 8 channel LPCM, 192 kHz, 24 bit audio capabilities, blu-ray and HD DVD at full resolution and Consumer Electronic Control. There are four main version upgrades with minor fixes inserted in. Version 1.1 provided DVD-Audio support. This form of audio is similar to the Super Audio CD, a method of delivering audio content at much higher qualities than traditional CDs. Version 1.2 and 1.2a added in Super Audio CD support.

Version 1.3 was the biggest update and provided Deep Color (more than 16.7 million colors), xvYCC (Extended color gamut), auto lip-sync, Dolby TrueHD and DTS-HD Master Audio. The minor update to 1.3 added in an updated Consumer Electronic Control command list. Version 1.4 allows for use of the ethernet, audio return, 4k x 2k resolutions and 3D video. A minor update to 1.4 allowed for 3D at a higher quality.




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