An acronym for High Definition closed circuit television. This is an emerging new standard for sending video over standard RG-59 coax cable. One purpose of the standard is to take advantage of HD monitors and provide the clearest live picture possible. The standard requires modified hardware in cameras, DVRs and monitors. This is expected to be available early 2010. This sounds like a local live improvement but recording and sending the data through the Internet will require compression to be effective. We’ll see the results when it is available at trade shows.