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High definition multimedia Interface or HDMI as it is known is an audio video interface which transfers uncompressed digital streams over a single cable. The cables which are used to do this relay are HDMI cables. Available in two categories, category 1, tested at 74.5 MHz, known as standard and category 2 tested at 340 MHz and called high speed, these cables also fall in the two categories because of their specific lengths. Since both audio as well as video can be transferred over a single cable, it is also changing the face of the multi media and entertainment industry. A variant of this cable, the HDMI extension cable, supports standard HDMI video, enhanced HDMI video and high definition HDMI. Compatible with almost all digital display devices such as HDTV’s, plasma displays, LCD TV’s and projectors, these cables are referred to as the future of HDTV. Another variant is the DVI to HDMI cable.

If a user needs to convert video from a DVI source and present it on an HDMI monitor or display device and vice versa, they can make use of the DVI to HDMI cable. They perform the same action as the HDMI cable since they use the same encoding scheme. The only difference is that while HDMI uses a single connection to carry both digital video and audio, DVI can transfer only video. Equipped with either type of connectors, they are ideal for connecting DVD players, satellite set-top boxes and Blu-Ray players to Projectors, LCDs and Plasma HDTVs and HD displays. The cables used are known as the DVI to HDMI cables. These cables reduce EFI-EMI interference and provide crystal clear picture quality. Available in lengths ranging from 6 ft to 15 ft, they transmit HDTV at 2.2 Gbps. Supporting high resolutions of 24 bits/pixel; they are pin to pin compatible with DVI.

Since the DVI variants do not relay sound, they cannot be used for all multi- media applications. In such cases one can use the HDMI cable which delivers high frequency response and supports resolutions of 1080p using gold plated conductors. They also reduce cross talk and interference and isolate outside noise. Depending upon the distance between the source and display devices, HDMI cables with lengths ranging from 3ft to 75 ft can be used. Since more and more products supporting HDMI interface are being developed, these cables are gaining popularity.

HDMI video and audio signals can be simultaneously relayed to up to eight HDMI displays using a HDMI Splitter. Working on simple plug and play methodology, this device splits the input signals, duplicates it and then provides synchronized output on all displays connected to it. A single cable connects the HDMI output device to the splitter and then to each HDTV display and can transmit both video and audio over it thereby reducing clutter, cutting costs and saving space. Compatible with HDMI or DVI-D and HDCP-enabled HDTV, this splitter supports HDTV resolutions up to 1080p and computer resolutions up to 1920 x 1200. Available in 2, 4 and 8 port configurations, these devices can also be daisy chained together for achieving a greater configuration.

A category of video splitter, this device is a compact HDCP compliant audio/video unit supporting HDTV resolutions up to 1080p and computer resolutions up to 1920 x 1200. Equipped with agency approvals from CE, FCC and RoHS, it offers multi platform support. Control is exercised by Infra Red remote or the front-panel manual control buttons. Advanced models also use TCP/IP or RS232 methods. LEDs on the front indicate the status of the selected device. The main advantage of using this device is that signals need not be converted from digital to analog and back but all signals are relayed in uncompressed digital streams. Easy to install, the HDMI distribution amplifier does not require any additional software or device drivers for operation.

This unit works with Set-top boxes, DVD players, D-VHS players, play stations, and other high definition devices. Features common to all models include low power consumption and a video amplifier bandwidth up to 2.25 Gpbs/ 22.5 MHz. Newer models guarantee more synchronized in/out ports, high compatibility and high reliability. Since HDMI allows content providers to ensure that their intellectual property is protected through HDCP, more and more people are demanding these splitters as they ensure secure transmission.

Used in digital signage applications, conference and boardrooms, training and educational facilities, remote monitoring and surveillance centers, entertainment facilities etc, the HDMI splitter provides unmatched picture and audio clarity.

High definition video and audio can be replicated and relayed simultaneously to multiple HDMI outputs from a single source using a HDMI Splitter. A single cable connects the HDMI output device to the splitter and then to each HDTV display. Once powered on, the unit is ready to operate as it works on the principle of plug and play and does not require any additional software for operation. Since a single cable is used to transmit both audio and video, it avoids unnecessary clutter. Whereas some models are backward compatible with DVI-D, others work with HDMI or DVI-D, and HDCP-enabled HDTV’s. Compatible with devices such as Set-top boxes, DVD players, D-VHS players and play stations, these splitters work with almost all operating systems.

A type of video splitter, these HDMI units allow from 2 to 8 devices to be connected, and for larger configurations, they can be daisy chained. Supporting HDTV resolutions up to 1080p and computer resolutions up to 1920 x 1200, these devices are compact HDCP compliant audio video units. LED lights on the unit indicate power status, enabling clean, simultaneous distribution of one high-definition signal to multiple HDMI displays.

Since it is equipped with the ability to amplify and boost the video signals, this device is also known as a HDMI distribution amplifier. The video signals are first split, then duplicated and distributed to multiple displays without converting digital signals to analog and then back to digital thereby keeping all signals in an uncompressed digital format. RoHS, CE and FCC certified, these devices ensure that their intellectual property is protected through HDCP. Developed with the intention of replacing DVI as DVI did not support audio, the newer models of these splitters guarantee more synchronized in/out ports, high compatibility and high reliability. This device has set a standard in video/audio transmission due to the uncompromised picture and sound quality it provides.

A device used in the field of audio and video connectors, the HDMI splitter is the perfect solution for digital signage applications, classroom and training facilities, remote monitoring and command centers.

A compact audio/video interface for transmitting uncompressed digital data is the High-Definition Multimedia Interface best known as HDMI. The HDMI cables are ones which relay digital video, audio and control signals without any deterioration. All these signals are transmitted over a single cable and using these cables is a space saving solution. Used to connect a high-definition device to an HDTV, one end of the cable needs to be plugged into the HDTV’s HDMI input slot and the other end into the device’s HDMI output slot. Once this is done, signals can be transmitted and HDMI outputs received. These cables provide excellent results and enhance your home theater experience.

While purchasing these cables, one will come across many inexpensive and many expensive varieties. Inexpensive HDMI cables should be chosen over the latter as both offer identical performance. There is no loss in video quality. The only thing one should keep in mind while opting for inexpensive cables is that every HDMI cable has a rating which should comply with a specific revision of the HDMI standards. HDMI 1.2a rated cables meet the requirements of HDMI 1.0, 1.1, and 1.2 but may not comply with the standards for HDMI 1.3. There are two categories of these cables which are available. Category 1 support HDTV resolutions and frame rates whereas category 2 cables can be used for higher resolutions or higher frame rates.

The Best HDMI cables are those which reduce interference and cross talk. They are designed in a manner that they offer superior quality output by isolating outside noise. Supporting resolutions up to 1080p, these cables use gold plated conductors and offer high frequency response. They also maintain stronger signals that yield superior sonic and video accuracy with precision formulated polyethylene dielectric material. These cables can range from 5 meters to lengths of up to 15 meters. Since these cables carry digital information from your cable box, DVD player, computer, or other media device to high definition display devices, they are not as susceptible to radio frequency interference the way standard audio or speaker cables are. But for longer cables runs, there is a possibility of a difference in picture quality. In order to avoid this, good quality cables should be used.

HDMI cables find their use in applications such as cable, satellite, home theater or DVD connections. HDMI switcher is also play an important role to solve many kind of problem occurs during switching two or more devices.