The best selling of video projectors today are which have high definition modes in 720p, 1080i, and 1080p types. We meet many series from many manufacturers in these classes, such are Mitsubishi HD1000U HD 720P DLP, Optoma HD20 DLP, ViewSonic PJD6531w, Vivitek H1080FD, and Epson PowerLite Home Cinema 8100. But what is the differences about these numbers?
The 720p bit is amount which refers to the image resolution. This means are 1,280 and 720 frame size in pixels and equals with 921,600 pixels per image. The frame rate (Hz) in 720p is commonly 23.976, 24, 25, 29.97, 30, 50, 59.94, 60, and 72. The p in 720p refers to progressive scanning type. When broadcast at 60 frames per second, 720p features the highest temporal (motion) resolution possible under the ATSC (Advanced Television Systems Committee) and DVB (Digital Video Broadcasting) standards. The 720p has higher vertical resolution than 1080i, cause it better viewing for sporting events such are football and auto racing.
In this class, we meet various types from several brands, such are Epson PowerLite Home Cinema 705 HD 720P, Optoma HD71 DLP, Mitsubishi HD1000U, FAVI RioHD LED 2 Mini Projector, and Panasonic PTAX200U. The range of price is $220 (Mediawise) to $2,700 (NEC NP3250). The average price is about $200-$400.
The term 1080i assumes a widescreen aspect ratio of 16:9, implying a frame size of 1920 x 1080 pixels. The i – which means interlaced – is a technique of increasing the image quality of a video signal without consuming extra bandwidth. This technique video was designed for display on earlier CRT televisions. Regurarly frame rate in this class are 25 (50 fields/s), 29.97, (59.94 fields/s), and 30 (60 fields/s).
The 1080p is video modes equals 1080i in pixels but differs in scanning type. The p means progressive, the newest video mode. The frame rate are 23.976, 24, 25, 29.97, 30, 50, 59.94, and 60.
To reduce confusing in choice the best video projector, before buying a one you must consider five tips below:
First, choose a one which support 1080P/1080i/720P signals.
Second, the projector also can be used with television, Sky, X-box, X-box 360, PS2, PS3, Wii, PC, laptop, and satellite/cable.
Third, the lamp life is more than 6000 hours on average.
Fourth, support various input jacks such are HDMI, VGA, Audio, TV analog, compatible with DVI and component video.
Fifth, can be used the eco mode to reduce overall noise and lower power consumption electricity.