Umbriferous technology details solves analyse of have a bowel movement of interf

As the fall of projector price, and the ceaseless development of umbriferous technology, the projector application in daily life is wider and wider, with still apply at high-end photograph to compare only a few years ago, numerous now medium and small businesses and domestic user also used projector, as a result of projector professional, believe a lot of friends to just have a simple knowledge to projector, and do not be not comprehensive understanding projector, understand the simple application of projector only, be not the relevant setting that understands projector truly, the author is everybody introduction how to know the phyletic and various interface of projector truly today.

Projector interface basically has input interface, output interface and control interface 3 parts composition, but be not all projector to own this 3 shares, have partial low end recreational projector has input interface only, for better control cost, the output with not common user of entertainment of leave out family and control interface also are understandable.

Inputting interface is the port with the most principal projector, basically all projector included the input interface such as D-Sub, S-Video, Video, Audio, the author is everybody below one by one analytic the application of interface of each kinds of signal in daily life.

One, D-Sub (VGA) interface

D-Sub namely the VGA interface that we often say, its are very common also on common monitor, its are used asymmetrical the 15Pin join means that distributing, can transmit imitate signal only, its job principle: It is to will be shown put inside the image that stores with digital format (frame) signal becomes imitate through imitate modulation in RAMDAC high frequency signal, next reexport is become to projector picture, such VGA signal are carried in the input (inside projector) , with respect to the conversion that need not pass matrix decipher circuit even in that way like other video signal. It is the shortest that the video that becomes knowable like the principle VGA from the video in front transmits a process, so VGA interface has a lot of advantages, if do not have string of faze,synthesize detached loss to wait without circuit. D-Sub interface is in the daily application of projector, basically use at joining with table machine or jotter photograph, realize the input of imitate signal.

2, DVI interface

DVI is received taste cent to be DVI-D and DVI-I two kinds, in in compare in high-end projector common, its basically are used at be linked together with the computer that has a number to display output function to receive, the RGB signal DVI of indication computer (Digital Visual Interface) the number shows interface, be by in September 1998, the number that holds water on Intel developer forum shows working party (DDWG of abbreviation of Digital Display Working Group) , the number that makes shows interface level.

3, standard video (RCA) interface