Hard Disk Drive. Although usually associated with computers, Panasonic's top-ranging DVD recorders also feature hard disks. Their enormous capacity can store huge amounts of video and images which can be archived or edited before transferring to a 'soft' disk such as a blank DVD-RAM or DVD-R.
HDMI
HDMI stands for High-Definition Multimedia Interface and offers an easy and convenient way of interconnecting digital audio-video components. With HDMI, digital signals are not compressed - transmission is direct. And because the signal stays in the digital domain, it is free from the degradation and noise that occurs with analogue signal transmission. HDMI is especially suitable for displays which use all-digital image processing (such as plasma screens, LCDs, etc), DVD-Audio, DVD-Video and other high-quality digital formats.
HDTV
HDTV stands for High-Definition Television. This highest-resolution subset of Digital Television offers filmlike picture quality with impressive surround sound. With twice the vertical and horizontal picture resolution, the picture of HDTV is approximately twice as sharp as that of NTSC. HDTV has widescreen aspect ratio of 16:9 and Dolby Digital sound system.
HEPA Clean filtration System High Efficiency Particulate Air
Panasonic's HEPA filter removes most allergens, irritants and pollutants like pollen, spores, dust mites, bacteria. It offers perfect protection for allergy and asthma sufferers and guarantees you a clean and fresh home every time you vacuum
HighMAT
Panasonic DVD players equipped with HighMAT (High-performance Media Access Technology - a joint development with Microsoft) can handle discs with a mixture of data (such as different types of picture and sound files) more quickly, smoothly and easily. HighMAT benefits include quicker disc start-up, rapid data access, and easier track navigation thanks to playlist menus.