To understand the difference between interlaced and progressive scanning, you must understand how television images are typically composed. Two fields create one frame. Each field is interlaced so that when combined together, they create a full image called a frame. In television, 30 frames are shown per second, or 60 fields per second. 1080i indicates a picture’s resolution using interlaced. This results into a high resolution image with television-like quality.

Progressive images dispense with the fields and display progressive, multiple full frames. 1080p indicates a high resolution image that appears more like film. Blu-ray disc offers the higher quality 1080p video resolution. In fact, this HDTV video quality is the premier option available far surpassing any other medium or broadcast format currently on the market.

Blu-ray players and Blu-ray recorders also feature up to 54 Mbps bandwidth which is about twice that of a normal HDTV broadcast making the video … Read the rest

Atomic

I’m sure your heard about atomic clock, this kind of clock is very accurate. Why not have atomic clock at your desktop. If it works properly you will be able to synchronize your computer clock with atomic time servers. If you do decide to operate a timeserver, be sure to calibrate your atomic clock regularly. If you don’t have an atomic clock, build one. The atomic clock signal will penetrate almost all buildings, except typically commercial steel buildings that have few windows. Conventional personal computers are required to be connected to the Internet in order to obtain an atomic clock signal that can update a clock of the personal computer (PC). Current operating system software permits access to the atomic clock broadcast to update the PC clock as long as there is an Internet connection for broadcasting the atomic clock signal to the computer. Also, heat can have an … Read the rest