Electronic Visualization for the Next Century

  • Ultra HD Blu-ray: Getting Closer

    May 19, 2015

    On May 12, the Blu-ray Disc Association announced it had completed the specifications for Ultra HD Blu-ray discs and concurrently released a new logo to go with the format. UHD BD supports a maximum image resolution of 3840x2160 pixels, refreshed at a variety of frame rates (including 60 Hz) with a maximum of 10 bits per pixel coding. The move to Ultra HD (or Quad HD) resolution is a big step forward for this optical disc format, which has been fighting to hold its place in the media landscape against video streaming and digital movie downloads, both of which can also handle 1080p/60 video with 8-bit color. One key component of the new format is support for high dynamic range (HDR) imaging, being touted as the next big thing by the likes of Dolby and Vizio. HDR imaging represents about 15 stops of light from deep shadows to bright white, and is an impressive tool in the arsenal of next-g..Read more

  • The Amazing, Shrinking LED Pixel Pitch

    May 20, 2015

    Not many years ago, if you went out to buy an LED sign you could choose between a pixel pitch of 6 mm (for viewing at large distances) and a pixel pitch of 12 mm (for viewing at very large distances). But over the the last few years, as seen at trades shows such as Infocomm and Digital Signage Expo (DSE), the minimum pixel pitch has been shrinking steadily. At the latest DSE, held March 11-12 in Las Vegas, Panasonic was showing signage modules with a pixel pitch of 1.1 mm, and other leading manufacturers were not far behind. For perspective, when plasma television sets first came on the market they had this same pixel pitch: 1.1 mm. LED signs are now suitable for a widely expanded range of applications -- and viewing distances far less than half the length of a football field. Most manufacturers build up signs from seamless or near-seamless modules measuring measuring between 12 and 24 inches on a side, although they are not necessarily square. Depending on size, pixel pitch, and..Read more