4K resolution
As noted above, DCI 4K is 40962160, while 4K UHD is 38402160, producing a slight difference in aspect ratio rather than a significant difference in resolution. Traditional displays, such as LCD or OLED, are 3840 pixels across the screen, with each pixel being 1/3840th of the screen width. They do not overlap—if they did, they would suffer reduced detail. The diameter of each pixel is basically 1/3840th of the screen width or 1/2160th of the screen height - either gives the same size pixel. That 38402160 works out to 8.3 megapixels, the official resolution of 4K UHD (and therefore Blu-ray UHD discs).
DirecTV-14
Michael White, chairman, president and CEO of DirecTV, was skeptical of the prospects for 4K in the past but was determined to stay on the bleeding edge of broadcast technologies. The 6,300 kg DirecTV 14 satellite uses Ka-band and Reverse Band Direct Broadcast Satellite (DBS) spectrum. DBS is expected to provide ample room for delivering 4K programs and other advanced services to customers.