Understanding HDMI

Understanding HDMI

The HDMI standard was created by many of the leading manufacturers, these include: Panasonic, Hitachi, Philips, Sony, Thomson (RCA), Silicon Image and Toshiba. HDMI is not just a used in video transfer, it also has embedded multi-channel audio support.
A lot of people out there find all these new "options" that have come with HD technology very confusing (i.e. Deep colour and DVD audio). So below is a brief guide to some of the options that are available below.

Deep colour: This in simple terms allows you HD television to go from a display using millions of colours to a display of billions of colours. It also increases the contrast ratio, therefore allowing more grey shades between white and black. Colour banding lines are completely eliminated and this gives the viewer unrivalled colour accuracy and vividness due to the smooth transitions and grading between colour and tone.

How much better is 1080p than 720p: In purely technical terms it's 225%. The sound quality is also improved by a further 50% with the new totally lossless, bit-for-bit Dolby True HD and DTS Master HD multi channel audio content.

xvYCC / xv Colour: This is a new standard brought in with HDMI 1.3 (IEC 61966-2-4, more commonly known as xvYCC, the shorthand term for "Extended YCC Colorimetry for Video Applications". This standard has the brand name "x.v.Colour"). This new standard has 1.8 times more display colours than the previous standard, enabling a more pleasurable viewing experience.

DVD audio: This digital format allows a range of audio channels from single through 5.1 channel surround sound. The audio quality of a DVD Audio disc can be substantially higher than a standard audio CD. DVD Audio supports bit depths up to 24-bit and sample rates up to 192 kHz, CD audio can only reach 16-bit and 44.1 kHz.

Cabling has always been an issue with recent electronic advances, for example you need this type of cable and can't go over a certain length, etc, etc. HDMI technology has been designed to use a standard copper cable construction. In order to allow cable manufacturers to improve their products through the use of new and emerging technologies, the HDMI standard specifies the required performance of a cable but does not specify a maximum cable length. Cables are now available in lengths of up to 15 meters.

In summary; HDMI digital interconnectivity provides a superior, uncompressed digital video and audio quality. A popular interface enabling the transmission of high definition data and various content, with a simple, user friendly connector that replaces the maze of cabling behind you television.

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Will My HDMI 1.3 Cable I Use For My PS3 Handle Full HD 1080p For 3DTV?

Will My HDMI 1.3 Cable I Use For My PS3 Handle Full HD 1080p For 3DTV?

The new 3D technology is coming at us fast and furious. So it is not surprising that it is bringing a lot of confusion and uncertainty, especially when it comes it older hardware and it's ability to handle 3D pictures. Many believe if you want to enjoy 3D at Full 1080p video resolution, the new HDMI 1.4 cable is required. And that the HDMI 1.3 cable will only produce a video resolution of 1080i for 3D.

If this was the case, older Blu-ray Player's like PlayStation 3, which will become 3D capable in September 2010 and has a HDMI 1.3 output, will not be sufficient to produce images of 1080p when playing a 3D Blu-ray Disc. As of now, Sony's PS3 is the only older Blu-ray Player that will support 3D Blu-rays. All other 3D Blu-ray Players are 2010 models and come equipped with the necessary hardware and codec already on board.

The truth is, that HDMI 1.3 cables can handle 3D output. As long as the HDMI cable you are using is rated "High Speed" or better it will support Blu-ray 3D output at Full HD 1080p resolution. Two key components for a source device to handle 3D output are codec and meta data. Sony will have to includes these enhances via their 3D Firmware upgrade. Judging by pass upgrades, such as providing support for internal decoding of DTS-HD Master Audio, Sony should have no problems accomplishing this task.

The codec used to store 3D is Multiview Video Coding or MVC. It produces a Full 1080p frame for each eye and using only 50 percent more storage space than a 2D disc. The PS3 was created before the MVC codec, so Sony has to implement MVC support without changing any hardware. Also required from the PlayStation 3 is the ability to produce and receive, from the 3D display, the correct meta data in the communication which happens between any HDMI-equipped devices.

This communication is done via Extended Display Identification Data or EDID. It transfers information sent from a video display to a source over E-DDC lines to describe its capabilities. A 3DTV will used the EDID to see if they are 3D capable, and if the PlayStation 3 will work with the TV. Basically the PS3 must be capable to understand and react to this new EDID value sent by the 3DTV.

Once Sony has made the firmware available for you to upgrade your PlayStation 3 with the new 3D technology, you should have no issues with using a HDMI 1.3 cable. According to most experts, a HDMI cable should not be a great concern for consumers in regards to 3D. Mainly due to the fact HDMI cables and hardware are not being marketed with version numbers (1.3,1.4) anymore. When purchasing a HDMI cable you should come across one of the following: HDMI Standard, HDMI High Speed, HDMI Standard with Ethernet, HDMI High Speed with Ethernet, and HDMI Standard Automotive.

Instead of deciding what HDMI version number you need, your focus should be on what feature you require support for. Whether it be for Deep Color, Audio Return Channel or 3D. A High Speed HDMI cable will be able to transfer the signal from your PS3 to a 3DTV. Finding a High Speed HDMi cable should not be a problem since the vast majority of HDMI cables manufactured and sold during the past 3 years have been High Speed HDMI cables.

*** One thing to be aware of is that you will not be able to transfer a Blu-ray 3D signal through to a non 3D Audio/Video receiver. Because these older HDMI 1.3 A/V receiver do not have the HDMI EDID language for 3D display capabilities, they are unable to transfer information from display to the source device (3D Blu-ray Player). A good work around to this problem would be to purchase Blu-ray Players with dual HDMI outputs, such as Panasonic's DMP-BDT350 or Samsung's BD-C7900. ***

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