Weak current College】 【demand analysis from the use of projectors buy --- Power By】 【China power house network.

For many people to buy digital projector is a big investment, but does not have a lot of people think that this is a headache. For many people, the projector is good or bad depends entirely on what they need to do what the projector, and you need to play the video data. Digital projector is data transferred to your own storage information and light sources, focal length and at least one RGB or computer input images. Although most of the projector is used to play the computer display screens, most projectors also need to handle additional video information including VCR and DVD player. So now the projector more important trend is that more and more projector is no longer used for Office and for families.

Because the family projector products users more and more, household projector on the market of the products will be more and more. These products not only in the size smaller and better mobility and performance, the luminance and the resolution is also getting better and better. Projector though for big-screen TV or LCD monitor, can be described as very large investment. However in the family use the projector also has a very obvious benefits:

Space: projector can drape on the ceiling or in the back of the watch area, so you can rest on the floor and make more room.

Cost: compared to the relatively high grade of widescreen TV, projector cost or you can get the user's approval.

Mobility: is the projector has an advantage, the projector can easily move from the room to another room without disrupting your existing room layout.

Viewing area: you can reach the 30-inch diagonal angle of view, you can play for different position adjustment lens and focal length.

Additional options: you can connect the device to the DVD player, VCR, home computers, video game device to the projector.

Easy to use: projector equipment are usually very easy, you only need to insert the power supply and data connector you can easily use.

Definition: as a very broad vision range allows the projector to watch with unprecedented clarity.

From the projector works up analysis, and indeed the projector in a line of very small pixel to form what we have to watch to the image. Your projector can display the details of the image, and you can observe the clarity, depends on the projector can provide pixel. This is what we used to say of the resolution, we want to know is:

Resolution is usually multiply by two data comes as 800 * 600, the first number refers to the horizontal straight line on the screen which contains the number of pixels; the second number refers to the vertical line on the screen that contains the number of pixels; the more pixels on the projector, the higher the resolution, you can see the drop shadow effect becomes more clear.

For resolution of requests and you want to use the projector's environment-related, if you mainly use the projector's aim is to play slide show, art clip and simple charts, then under 800 x 600 SVGA resolution of can meet your needs, if you are using an external video data such as a VCR or DVD, this is also the main household projector using a channel, you will need the WVGA 854 * 480 resolution on it, if you need to display a report that is similar to Excel or very detailed charts (such as in construction engineering required display), then we need XGA, 1024 * 768 resolution of, if you need a CAD or ultra high-definition display of the chart, you need to SXGA 1280 * 1024 under this top-level resolution.

However it is important to note that the projector's effect in the resolution of the projector and the computer matching of resolution will achieve the best results, so this is also the use of the projector. In Windows you only need to view the relevant option in the display you can get the current computer resolution data.

Data input/output port

The more expensive the projector has an input/output port will be more. The following summary describes the most projectors equipped with various ports and their functions.




Luminance

For wide room and large group activities often require larger images. If the output of the projector (luminance) and not strong enough to cover large areas, it may cause more trouble. Light intensity is calculated in accordance with lumens. The higher the number the lumens indicate higher brightness projector, but the higher brightness will let you get a clearer image. The following lists the different numerical terms of lumens:

700 lumens: small room, the audience is small, light and relatively dark

700 to 1600 lumens: normal business meeting rooms and training rooms, a medium-sized audience, less brightness

1200 to 2000 lumens or more: a large conference room or classroom, the normal room light

2500 lumens: more space, including the Hall, very bright light

Location and mobility

Although there is no handheld projectors, but the market still has a lot of very good mobile projector. Here we show the most common products. However need clear those lightweight products usually brings more functionality, if you are willing to put up with is the weight of the projector, you will find that your investment will change to better performance.

Focal length adjustment

Focal length adjustment allows the user to freely control the size of the image, if you need to convert the position of the projector is often so sure there will be this focal length adjustment function. If the projector can provide pendant ceiling mounted playback features, so this is even able to give the user save space, but the user needs to be noted that this is not a standard feature, now and in the ceiling using the adjust image need to be carefully, and always mobile.

Remote control

Remote control allows the user to any location in the room can adjust projector, projector pendant in the ceiling is very convenient for users to use, most projectors in menu settings can directly control the projector's many features, but also the projector also has many with button controls commonly used functionality, such as the power switch and the choice of video data sources. Before you buy you should think carefully about what the fuselage on the projector, so that there will not be operational problems.

In addition users to purchase digital projector should also be compared to the importance of standards is the contrast, contrast is the image in the brightest and the most contrast between the dark areas. The higher the contrast ratio, the image will become clear. Of course the room of light contrast image to a projector, lighting more room should be configured very high contrast of the projector (for example, in a conference room to play, but many people want to take notes with light, so the projector must be high contrast)

Expanding image feature allows the user to expand a specific area of the image for a specific area, which play the hordes of details such as the report is useful, in addition many projector also provides mouse operation function, so you can play the computer's display can be directly with the mouse.