Tata Sky HD is only providing 1080i HD signal. This is not true HD but only basic HD.
True HD is 1080p.
As of Now only Videocon D2H and Reliance Digital TV claim providing 1080p original hd.
Other DTH like Airtel, Dish TV, Sun Direct are providing just basic HD.
The reason they provide 1080i is it consumes less bandwidth compared to 1080p.
1080p vs. 1080i:
1080i, the former king of the HDTV hill, actually boasts an identical 1,920x1,080 resolution but conveys the images in an interlaced format (the i in 1080i). In a tube-based television, otherwise known as a CRT, 1080i sources get "painted" on the screen sequentially: the odd-numbered lines of resolution appear on your screen first, followed by the even-numbered lines--all within 1/30 of a second. Progressive-scan formats such as 480p, 720p, and 1080p convey all of the lines of resolution sequentially in a single pass, which makes for a smoother, cleaner image, especially with sports and other motion-intensive content. As opposed to tubes, microdisplays (DLP, LCoS, and LCD rear-projection) and other fixed-pixel TVs, including plasma and LCD flat-panel, are inherently progressive in nature, so when the incoming source is interlaced, as 1080i is, they convert it to progressive scan for display.
Hi,
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