HDMI enables delivery of both uncompressed, all-digital, high-definition video and uncompressed, multichannel, digital audio through just one cable. HDMI enables full digital surround sound and is ideal for connecting digital display devices and digital source devices.

There is no set definition for the maximum length an HDMI cable should be, cables from 10 to 20 metres have passed compliance testing, however that said, the length achieved without loss of picture, is dependent on the quality of the cable and the resolution.

An increase in bandwidth allows for deeper colour, up-to 48-Bit, over one billion colours. A broader colour space means that HDMI 1.3 is able to deliver any colour viewable by the human eye and reduce colour banding in images .

Also, unique to the 1.3 standard is a mini format connector for use with HD camcorders and other portable devices.

A specialised Lip Sync function has been included in HDMI 1.3, which allows for a device to sync audio and video flawlessly every time without fail.

Finally HDMI 1.3 includes a new HD lossless audio format, in addition to the current high-bandwidth uncompressed audio space; HDMI 1.3 also includes space for TrueHD and DTS-HD Master Audio sound.

Deep colour allows an HDTV to display billions of colours instead of millions.

HDCP stands for High-bandwidth Digital Content Protection. HDCP is a technology created by a company called "Digital Content Projection LLC" (a subsidiary of Intel.) This technology helps protect digital content, using a combination of encoding and encryption.