HDMI stands for High Definition Multimedia Interface and is the state of the art cabling method that transmits an all-digital signal combined over a single HDMI cable. The transmission of the traffic is uncompressed, therefore, giving higher bandwidth. Unlike DVI (Digital Video Interface) cables, HDMI is able to transmit both audio and video, whereas DVI only supports video. This is a great advantage as one cable carries all the media, therefore, reducing the number of cables required to connect your multimedia devices. HDMI was developed to substitute DVI.
Your home theater will probably consist of a number of components around your HDTV, including a DVD player, gaming system, personal computer and audio receiver. If your devices are reasonably close together within a point-to-point connection distance of about 5 meters or less, you will be able to use standard HDMI cables to connect the devices together. This type of cable is able to transmit 1020i or 720p video streams. These are the common standards between cable and satellite decoders, more advanced DVD players and digital broadcast DVD players.
You may decide to choose a DHMI cable with additional Ethernet support. This performs the same as a standard HDMI cable but adds an additional data channel for data traffic. Having the Ethernet support capability, it is possible to network additional devices, such as your PC or laptop. Take care if you are installing high definition video systems in your car, as you will need special automotive HDMI cables. These are needed to deal with the effect of vibration and disturbance from driving over uneven surfaces as well as the extremely high temperatures that can rise in your car if it left in the full glare of the sun.
If you have bought a Blu-Ray disc player you will need to make sure that you buy the necessary high-speed HDMI cable to support video resolutions of 1080p or higher. If you are not sure which one to choose, consult with the sales assistant who sold you the Blu-Ray DVD player. Take time to locate the HDMI port on your equipment that you are planning to connect. HDMI equipment ports are always female and those on the cables are always male. On your HDTV you can have 2 or more HDMI ports. Take a note of how many you have on each piece of equipment, as this will help you plan your wiring network.