Tuesday, July 26, 2011

Know better the HDMI

Know more closely with the technology owned by HDMI (High Definition Multimedia Interface)
When this feature is provided by the HDMI port on most electronic products in the world as an alternate digital function to replace the standard analog functions, such as coaxial cable, composite video, S-video, componet video, VGA, and so on. Then, what is HDMI own usefulness to the interests of users, including you.
HDMI port can be used to connect the entire source audio / video in digital form such as Blu-ray Disc Player, PC, video game console, computer monitors, and digital television. HDMI supports various video formats on your PC or TV formats including standard and high-definition video. It also supports up to 8 channel digital audio, and connection Consummer Electronics Controls (CEC). Uniquely, all that you can get by with just one cable. Compare if you use analog, there will be lots of different cables that should be used. CEC itself is used here so that the HDMI device is able to control each other if necessary, so that if users want to operate several different devices, simply use the existing facilities on the remote control only. The advantages of HDMI, because he has an electric current and the same signal as used by the DVI port (Digital Visual Ainterface), then if using a converter adapter from DVI to HDMI signal conversion is not required and most importantly no loss of video quality and sound.
Features HDMI
HDMI was first introduced in December 2002 known as HDMI 1.0. all the features we've mentioned previously existed at this HDMI 1.0. Currently HDMI is the latest HDMI version 1.3c, which certainly has the additional features lag. As support for Deep Color, auto lip sync, and High-definition multi-channel audio formats used in Blu-ray disc. Every version of HDMI cable using the same type, also still use the same connector pin 19. But every enhanced version, the bandwidth capacity always be improved and of course some new features are always included every new version of HDMI. HDMI 1.0 supports maximum pixel clock rate of 165 MHz (4.95 Gbit / s bandwidth), where he can display in 1080p resolution HDTV display pad and 60Hz refresh rate 1920x1200 WUXGA resolution, also at 60 Hz refresh rate. In addition to HDMI 1.1 kemempuan above, the added features that support DVD audio and the HDMI 1.2 added features that support Super Asudio CD. Meanwhile, the HDMI 1.3 capabilities further enhanced from previous versions. HDMI 1.3 has a pixel clock rates up to 340 Mhz 910.2 Gb / s bandwidth) capable of displaying much higher resolution such as WQXGA with a maximum resolution of 2560x1600. incredibly, still using a single digital link. On the HDMI 1.3 also supports Deep Color and xvYCC color space. Deep Color feature point is a method that uses shades, hues, Luminosity with the very large to increase the amount of color that can be displayed, from which had been sized million to billion. Deep color depth are using 30-bit, 36-bit or 48-bit compared to HDMI 1.0 which is only capable of 24-bit color depth. Features xvYCC color space itself is also known as xvColor which indicates that the full range of color (0-256) on 8-bit space is already owned, no longer using the RGB color that has a full range of color (16-235) on 8-bit space which is a limitation utuk analog monitor. Explanation of differences in the letters A, B, C itself is as follows. A, B, C is the difference in type connector. HDMI type A and C are currently widely used using a single link, whereas for type B using the dual links. However, due to use your Single links course, produced very high bandwidth, then the type B has not been necessary. Until recently type B HDMI berkonektor no one has produced.
Audio Capabilities
In addition to the visual capabilities of digital dimilik HDMI, of course not forgetting the digital audio capabilities. On the HDMI 1.0 supports 8-channel LPCM (linear pulse code modulation) at up to 192kHz sampling rate and 24-bit resolution. Meanwhile, the HDMI 1.3 added support for 8 channel surround-sound streams encoded using compression algorithms Dolby TrueHD and DTS-HD Master Audio. To note, all HDMI versions already support the features Dolby Digital and DTS lossily compressed bit streams. Processing complex enough to sometimes make the video audio signal comes before the video signal coming, so make like out of sync between the picture that appears with the audio (voice) who came later. For that, the HDMI 1.3 presented a new feature called auto lip sync, where with this feature, will automatically avoid the problems as above.
HDMI Device Selection
For the selection of multiple HDMI devices you want to buy, of course you also need to know what features offered by these devices. Features such as Deep Color, xvYCC, Color Space, Dolby TrueHD, and DTS-HD Master Audio adlah optional. So not all HDMI devices have a feature like this. Make sure before you buy. Similarly to the selection of purchasing an HDMI cable, HDMI 1.3 cable untuik where there are two types: standard or category 1 and category 2. for category 1 HDMI cable has been tested to work at 75 MHz, which is equivalent to a 1080i signal. Usually these cables have a maximum length of up to 5 meters and materials to use 26AWG copper wire materials. The second type is the High Speed ​​or category 2, which has been tested to work at a speed of 340 MHz is equivalent to a 1080p signal and also able to enhance the color depths. This cable type can also accommodate the higher display resolutions, eg 2560x1600. These cables are usually manufactured using a 26 or 24 AWG copper wire where the length is not restricted. So, know beforehand that the HDMI device you buy. Is it in accordance with your needs or not. If the seller will not understand the products you buy, find out beforehand about the HDMI device technology through a better understanding or information from the internet. Menghidarkan course for you from disappointment.

No comments:

Post a Comment

Klik 2 kali untuk keluar