we travel to the international show in las vegas and conical troy wolverton -- and caught up with troywolverton. mckinney.ith phil >> an hd television is generally defined as one half -- that has 1080p. that means you have about 1080 lines of resolution by about 2000 columns of revolution -- resolution. on a 4k tv, you have double that. columns ofut 4000 resolution on a 4k tv. the resolution because both sides are doubled of the length and columns, you get four times the rebels -- the resolution. useful on a big-screen tv. most experts would say it is useful on a 60 inch and above tv. tv, particularly if you're sitting up close to it, you can definitely tell the difference. there was a display on the other side of this wall where they were demonstrated -- demonstrating a newspaper text on the screen and they were showing what it looked like on a 1080p tv and a 4k tv. you can tell the difference. it is much sharper and clearer on a 4k tv than it is on a 1080p tv. the problem right now is that these tvs are very expensive. sony came out with its first 4k about they start off at $25,000.

we travel to the ces international show in las vegas and caught up with troy wolverton of personal technowledge acondas for the "san jose mercury news" and we also speak with phil mckinney president and ceo of cable -- for the cable industry. >> guest: right now hd television is generally defined as one that has 1080p so what 1080p means is you have 1080 line resolution by columns of resolution. on a fort ktvu have doubled that so you have double the lines of resolution and double the columns of resolution so you get about 4000 resolution on a fort ktv. it's actually both sides are doubled but the length and the columns you actually have four times the resolution of a regular television. so it's useful on a big-screen tv. most would say it's useful on a 60-inch and above tv. if you are setting up close to a large screen tv you could definitely tell the difference. the numbers displayed on the other side of this wall here where they are demonstrating newspaper text on a screen and showing what it looks like on it 1080p and what it looks like on a four ktv and you can definitely tell the

we traveled to the ces international show in las vegas and caught up with troy wolverton, personal technology columnist for the "san jose mercury news". we also speak with phil mckinney, president and ceo of cablelabs with the cable industry. >> guest: right now an hd television is generally defined as one that has 1080p. what that means is you've got 1,080 lines of resolution by about 2,000 what's called columns of resolution. on a 4k tv, you have double that. so you have double the lines of resolution, and you have double the columns of resolution. so you get about 4,000 columns of resolution on a 4k the. it's actually the resolution -- because both sides are doubled, both the eleventh and -- lengthd the columns, you actually get four times the resolution of a regular television. so it's useful on a big screen tv. most experiments will say it's useful on like a 60-inch and above be tv. below 60 inches you can't tell the difference. but particularly if you're sitting up close to a large screen tv, you can definitely tell the difference. there was a display on the other side of this wall here