1080i: An HD presentation format consisting of 1,080 vertical lines of display resolution in an interlaced scan. Most HD programming in the U.S. (terrestrial & satellite) is transmitted in the 1080i format.
1080p:An HD presentation format consisting of 1,080 vertical lines of display resolution in a progressive scan. While a growing number of HDTV monitors are capable of displaying 1080p content, 1080p sources are relatively limited.
1440p: An HD presentation format consisting of 1,440 vertical lines of display resolution in a progressive scan. Currently, this level of resolution is limited to PC applications (i.e. QXGA displays), but future generations of HDTVs may feature 1440p capability.
3D:Versions 1.4 and 1.4a of the HDMI Specification add support for three-dimensional (3D) video formats, establishing a foundation for 3D broadcast, movie, and gaming applications. Both the source device and the display need to support 3D functionality. The 3D formats supported include frame packing, top and bottom, and side by side (full and half)
4K & 4KX2K:Advanced display technologies that will deliver roughly four times the screen resolution of a 1080p monitor.
CAT-5/CAT-6 Cable :Category 5 and Category 6 cabling is used in Ethernet and Fast Ethernet networks, and has also been adapted to transmit an HDMI signal. Both cables feature four twisted-pair copper wires and an RJ-45 connector, with the main difference being that CAT-6 has tighter tolerances for line noise and crosstalk. CAT-5/CAT-6 has been successfully used to transmit HDMI over extremely long cable runs, i.e. 40-50 meters.
Standard HDMI Cable :A Standard HDMI cable is one that is tested to performance standards that satisfy the requirements of most consumers. It is performance tested to 74.5 MHz, and can reliably transmit a 1080i or 720p signal up to 15 meters. Standard HDMI Cables are referred to as Category 1 cables in the HDMI specification.
High Speed HDMI cables are tested to a more rigorous performance standard, aimed at meeting the needs of high-end home theater systems. It is performance tested to 340 MHz, and can reliably transmit a 1080p signal (and more) up to 7.5 meters. High Speed HDMI Cables are referred to as Category 2 cables in the HDMI specification.
HDMI 1.4:The HDMI technical Specification has been updated since its inception, and HDMI 1.4 was released in 2009. While all versions of the spec are backward-compatible, devices built to the 1.4 standard may feature extended capabilities not found in earlier devices. For instance, newer TVs and disc players might take advantage of HDMI 1.4's support for 3D video, but would still be fully compatible with older devices in non-3D applications.
HDMI 1.4a: A recent release of the HDMI Specification, Version 1.4a adds support for some additional 3D video formats (broadcast), making the interface more widely compatible with emerging 3D technologies.