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What is HDMI - Review - Specifications

HDMI

HDMI (High-Definition Multimedia Interface) is the first and only industry-supported, uncompressed, all-digital audio/video interface. By delivering crystal-clear, all-digital audio and video via a single cable, HDMI dramatically simplifies cabling and helps provide consumers with the highest-quality home theater experience.

HDMI provides an interface between any audio/video source, such as a set-top box, DVD player, or A/V receiver and an audio and/or video monitor, such as a digital television (DTV), over a single cable.

HDMI supports standard, enhanced, or high-definition video, plus multi-channel digital audio on a single cable. It transmits all ATSC HDTV standards and supports 8-channel, 192kHz, uncompressed digital audio and all currently-available compressed formats (such as Dolby Digital and DTS), HDMI 1.3 adds additional support for new lossless digital audio formats Dolby® TrueHD and DTS-HD Master Audio™ with bandwidth to spare to accommodate future enhancements and requirements.

HDMI 1.3 NEW FEATURES

x.v.color

Future proof your purchase with HDMI 1.3, it supports Deep Color ™ to display 1.07 billion or more colors (x.v.color) without colour banding artifacts.

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sRGB vs. x.v.color
  • x.v.color vs. sRGB
    See 1.8 times the number of colours of
    previous YCC colour standard (sRGB).

Deep Colour for Displays

  • HDMI 1.3 supports 10-bit, 12-bit and 16-bit (RGB or YCbCr) color depths, up from the 8-bit depths in previous versions of the HDMI specification, for stunning rendering of over one billion colors in unprecedented detail. This is Deep Colour.
  • Broader color space: HDMI 1.3 adds support for “x.v.Color™” (which is the consumer name describing the IEC 61966-2-4 xvYCC color standard), which removes current color space limitations and enables the display of any color viewable by the human eye. This is x.v.Colour.
  • HDMI 1.3 adds additional support for new lossless compressed digital audio formats Dolby TrueHD and DTS-HD Master Audio™. |Source|
  • HDMI 1.3 supports video resolutions up to 1440p and 120Hz+ frame rate and 10.2 Gbps ( gigabits per second) data rate.

The new HDMI 1.3 in 12-bit can mix together any one of 4,096 shades of each primary color for 68.7 billion possible colours. These different shades help decrease artifacts (like color banding) and increase color fidelity. |link| Here is an interesting page on 100/120Hz with simulations |link|

Q: What is the difference between “Deep Color” and “xvYCC?”
A: Deep Color increases the number of available colors within the boundaries defined by the RGB or YCbCr color space, while xvYCC expands the available range (limits) to allow the display of colors that meet and exceed what human eyes can recognize.

You need HDMI 1.3

If you have both “Deep Color” and “xv.color” you can access all the colours the eye can see, there are virtually no limitations on what colour can be mapped. This is why you hear the term future proof, companies will be making more devices that can record or display x.v.color with Deep Color.

You may find it surprising that you can in 2009 buy a 1080HD projector that does not have this "future proof" capability so be sure to read the specifications. For example the BenQ W5000 does not support HDMI 1.3.

While conventional CRT TVs reproduce content within the standard color range "sRGB", some of recent televisions such as flat panel LCD TV are capable to reproduce content exceeding it drastically. "xvYCC" (IEC61966-2-4), a standard with approximately twice the color range of sRGB. In January 2006 "xvYCC" was recognized by the International Electrotechnical Commission (IEC) as an international standard. Products which conform to "xvYCC" will be able to faithfully reproduce natural object surface colors with contents that also conforms to "xvYCC" is capable of reproducing color that is closer to nature. (Sony)

HDMI 1.2 could transfer 8 bits per channel. So, there were only 256 shades of each color to choose from and fewer colors overall (256 x 256 x 256 = 16.7 million).

You don't really need it?

Some people may say you just don't need 1.3/Deep Colour/x.v.color, arguments being the eye can only see X number of colours. A wider colour gamut means you're more lightly to display the correct colour if you have twice as many to choose from and the choices encompass almost every possible visible colour.

Put another way why not get the latest future proof options? This new technology is here for a reason.

Colour Depth bits (Per Channel)
24 (8)
30 (10)
36 (12)
Possible Colours (Improvement)
17m
1B (64 X)
69B (64 X)

Sanyo TapozReal HD technology with 14-bit digital processing and Sanyo's real-focus HD lens system. The TopazReal technology can handle changes in color phase and level and deliver roughly 216 billion different color combinations.

Z3000
The Sanyo PLV-Z3000 has
HDMI 1.3 - Deep Colour - x.v.color - 120Hz - included.

Info Projectors here

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