Cuba Tourist Visa. Everyone wishing to enter Cuba as a Tourist is required to apply for a Tourist Visa-card. A tourist card is valid ONLY for leisure or recreational purposes. It is not valid for other travel purposes. A Tourist Card is valid only for one entry within 180 days after the date of issue.
HD-CVi & HD-TVi Technologies. HDTVI (High Definition Transport Video Interface) is the HD Video transmission Interface. HDTVI technology can be implemented in existing simulation on a transmission line reliable kop HD video signal transmission.
1 The DCI 4K standard has twice the horizontal and vertical resolution of DCI 2K.  UHD-1, or ultra-high-definition television (UHDTV), is the 4K standard for television and computer monitors. UHD-1 is also called 2160p since it has twice the horizontal and vertical resolution of 1080p. It has a resolution of 3840 x 2160 (16:9, or approximately a 1.78:1 aspect ratio). UHD-1 is used in consumer television and other media, e.g. video games.