JJ’s Now-and-Then Blog: The Use of a Bias Light when Viewing High Dynamic Range TVs John E. Johnson, Jr.April 13, 2015 In the realm of HDTV, we have 4K already here, but also, HDR (High Dynamic Range) images. One of the HDR codecs is contained in Dolby Vision, but there are competitors working night and day to have their versions ready when you decide... Blogs & Little Things