HDMI enables the high quality transmission of digital information from one device to another. HDMI or the high definition multimedia interface is now an essential line of communication between all your digital devices. They are a superior alternative to the traditional S-video and coaxial cables. To understand HDMI cables, you first have to know what they are not.
S-video, coaxial and HDMI cables
A little peek at the back panel of your TV or DVD player will reveal a tangle of cables. You might see an S-video cable connected to its roundish connector, or a coaxial connection, which has a metal connector that screws in a pin. Coaxial connections are also known as aerial connectors, and are used to connect radio frequencies and cable television. Both these cables allow you to connect your media using an analogue transmission. The downside of these cables are that not only is the transfer quality inferior to HDMI, but they also clutter your space.
An HDMI cable is a must when using an HDTV. The high quality digital signals are lost when you do not use an HDMI cable for an HDTV.
Another edge that HDMI cables have is that there is just one cable for both audio and video. You can minimize all the cable clutter behind your devices.
Opting for an HDMI cable can be tricky and confusing. This is because of the various technical aspects involved. The importance of HDMI (High Definition Multimedia Interface) has grown rapidly over the past few years. The various features offered by these cables are usually attributed to this rise in popularity.
Factors to be considered prior to opting for HDMI cables
It is important to understand there are a number of factors to be considered when it comes to choosing HDMI cables. Some of the common ones include:
• Length of the cable
• HDMI capable device
• Cable category
The aforementioned factors are extremely important when it comes to purchasing HDMI cables.
Length of the cable
More often than not, the length of the HDMI cables does not affect the overall quality of the video. However, there have been cases in which owners have complained about distorted sound or video which was then sorted out with the help of shorter HDMI cables. It is for this reason that you need to consider the length of the cable before your purchase it. Note that the length of most HDMI cables varies from 3′ to 50′.
HDMI cable category
There are two main categories that you need to consider when it comes to purchasing HDMI cables. Category 1 cables involve enhanced the frame rate and resolution while category 2 supports a 1080i frame rate and resolution.
HDMI capable devices
Most modern devices such as LCD and plasma TV sets are HDMI compatible. However, it is still advisable to refer to the instruction manual. It is important to note that there are many different versions of HDMI cables available in the market. While the modern devices might be HDMI capable, certain devices might not support a particular version.
Have you recently purchased an upgrade to your TV set? If yes then you might want to convert your TV into high definition by using an HDMI cable. Note, that this will allow you to transmit sharper image and sound files from the storage unit to the display device. With the help of these cables, you can enjoy the high definition channels offered by your cable company.
Things you will need
Mentioned below are some of the basic things that you will need when it comes to the conversion of cable TV to HDMI.
• HDMI converter box
• HDMI compatible high definition TV (HDTV)
• HDMI cable
Step 1: Contact your cable operator for an upgrade to the existing set top box. Optionally you can also purchase the coaxial HDMI converter. However, it is advisable to opt for a coaxial HDMI converter as it offers you the option of reverting back to the cable TV.
Step 2: Connect the coaxial cable that delivers the cable signal to the ‘video in’ port located at either sides of the cable receiver and the HDMI converter box.
Step 3: Connect the coaxial cable to the ‘video in’ port after which you can connect the cable to the ‘video out’ port located on either sides of the HD receiver and/or the converter box.
There are many different kinds of HDMI cables in the market. It is important to opt for one according to your needs and requirements.
Television has become an almost inseparable part of our lives, but have you wondered about the intricacies that go in channelling your favourite shows to your TV?
A clearer picture
An important component, involved in the process of transporting audio/video digital data, is HDMI leads. They are the new and more preferred connections for HDTVs. It is important to glean as much as one can about the uses and importance of HDMI leads as they are the cables bringing home a clear picture quality.
Why are they leading the market today?
HDMI basically means High Definition Multimedia Interface that transmits audio/video digital data in an uncompressed format and thus HDMI leads are turning out to be more popular than the other option to use a SCART lead, as the number of cables connected back to your TV is much fewer. HDMI leads as compared to analogue are much more advanced in terms of their audio and video display. Not only do they support the current technology such as Dolby Digital and DTS but still have bandwidth remaining to accommodate future enhancements in digital technology.
However, one must keep in mind that the HDMI leads you purchase need to be of the highest quality. Thus, it is important that you purchase the HDMI leads from reputable dealers.
HDMI leads are definitely new and improved and are currently the number one choice in the market.
HDMI is short for the high definition multimedia interface. It is one of the most recently developed technologies in information analysis and communication systems. When it comes to television equipment, HDMI cables have gained in popularity. This technology is specially developed to offer extremely precise and lucid graphics.
The clarity and resolution of the images on screen has seen massive improvements after the use of HDMI cables. Buying the right HDMI cable for your multimedia equipment is important if you want to enjoy the high definition audio and video experience. In fact, there are a number of different things you need to consider while looking for HDMI cables.
Top considerations when selecting HDMI cables
The HDMI cable length varies from 3′ to 50′. To enjoy the best viewing experience, the cable length should be of an optimum value. If you choose to use a long HDMI cable, the transmission may suffer from signal and quality loss.
As far as possible, try to get an HDMI cable that has larger resistance to external conditions. They should also be made from advanced materials that go well with standard specified cables. As different connectivity cables offer different quality of service, it is always suggested to buy high quality cables.
Look for HDMI standard compatibility
Compatibility of HDMI cables with your HD multimedia device is another thing to look for. Each HDMI cable has a specific standard to suit your device. Thus, you must ensure that you are aware of the ratings prior to making your purchase.
High definition TV has changed the course of TV viewing in a big way. The invention of LCD TVs has had a major impact on today’s generation. LCD TVs gives you a theatre like experience from the comfort of your own home.
How do HDMI cables work?
The old analogue cables used to convert the digital signals into digital signals and then back into analogue signals to produce the images on your TV screen. The HDMI leads on the other hand carry the original digital signal which helps present a clear picture on your TV screen. The superior quality of the audio and visual presentation is maintained by the HDMI lead.
Conversion of signals often results in distorted or no signal. HDMI leads are thus a wise option as the images viewed on the TV screen are clear and the sound is crisp.
HDMI leads support high definition as well as standard and enhanced video, which make them connection devices.
HDMI leads are far superior to the analogue leads used previously. They support 8 channels, with uncompressed digital audio and other available compressed formats like Dolby Digital. They have the capacity to accommodate additional enhancements because of their large bandwidth.
Recent times have seen a revolution in high definition media. New digital devices like Blu-ray players, high definition LCD and LED TVs, laptops and their 3D counterparts all use HDMI cables for best output performance. High definition media interface or HDMI ports are now a standard fixture in all new generation devices. To connect these devices we use HDMI cables. These come in many types, from cheap cables to gold plated HDMI cables.
How does HDMI work?
A full HD output screen has 1080 lines of pixels. These pixels are scanned one after the other repeatedly. This is known as progressive scanning and can be done only when the image data is transferred very quickly. The old audio-video leads and SCART cables cannot transmit all this data. The old dual lead cables, which had separate leads for sound and picture, can carry only analogue signals. Hence the digital data had to be first converted into analogue and then converted back to digital on reception by the output device. This time lag can cause your picture quality to reduce and can also introduce noise.
The next generation cables
HDMI 1.4 cable can transfer digital data at high speed. This is due to the fact that an HDMI cable is capable of transferring digital data directly without analogue conversion. It is also a single lead for both audio and video, making it hassle free and saving space. It is ideally suited to the latest 3D LCD TVs, which bring the latest picture viewing technology to your living rooms.
More and more people have started to use High Definition technology. HDMI cables have thus become very popular due to the increasing use of high definition gadgets. HDMI cables come with many benefits. HDMI cables help you get better audio and video quality out of your high definition device. HDMI cables carry digital data without any loss or distortion. HDMI cables perform better than any other cable and provide you with the perfect high definition experience.
HDMI vs. DVI cables
HDMI and DVI cables are somewhat similar; the only difference is that HDMI cables carry both video and audio signals. DVI cables carry only video signals. The encoding scheme used in both cables is however somewhat similar. HDMI cables come in different versions, from 1.0 to 1.4, so provide flexibility in terms of reach and quality.
HDMI cable length
No matter how good your HDMI cable is, the length of the HDMI cable might affect the video and sound quality. HDMI cables might not perform so well if you are using a very long cable to connect your high definition appliances. You can purchase boosted or amplified cables if you need them to be very long.
HDMI cables can be used to connect anything; right from computers and DVD/Blu-ray players to PS3 gaming consoles.
HDMI devices were first introduced to the consumer market in 2003 when HD televisions were first introduced.
Connecting HDMI cables
HDMI cables connect to media sources like cable boxes, personal computers, DVD players and video gaming consoles and also radios and televisions. They carry digital signals from one device to another.
HDMI cable layout
Generally HDMI cables have 19 pins, each one having a different function. Nine of the pins convert the data received into a digital format while three of them are used to channelise data. Three other pins are used to continuously convert and transmit data.
Transmission of data
HDMI cables have a pair of twisted wires which first convert the data and encode it to ensure that the data does not get degraded in the course of sending it from one device to another. The other device receives the data sent via the cable and decodes the information. The cable relays two types of data; one wire sends the data in a true form while the other wire sends data in the inversed form. The receiving device decodes both sets of data and compares the two to check for any degradation and the better of the two is used for the output.
There is no specific length of an HDMI cable. The cable should not be too short as it might damage your devices by pulling on it. But a long length of a cable can be prone to signal degradation.
Darwin’s theory of the ‘fittest shall survive’ can be used in every field, be it science, medicine or communication.
The cable battle
Evolution in technology is easily visible with new products becoming available all the time. Television cables too fight to be the fittest to survive. And the likely current winner of the battle seems to be HDMI cables.
Let the battle begin…
HDMI cables can bring out the best of your equipment’s audio and video capabilities. HDMI cables also transmit digital data and thus neither is there distortion nor loss of signal. If statistics are to be believed, HDMI is clearly more advanced and more suited for everyday use and professional use than DVI (Digital Visual Interface) or Component Video cables.
The major stand out point for a HDMI cable is that it can carry both audio and video signals while DVI carries video only. Also, HDMI cables are upgraded all the time, with the latest HDMI 1.4 version being made with extended functionality, which can support a much higher resolution than ever before.
Thus, if there ever was a battle between the different cables, we know who would win.