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Library Technology – Reviews, Tips, Giveaways, Freeware

Receiving Video Signals from a Video Player through Digital Receiver: Overview

Posted In Technology Reviews, Products Review - By Mike on Monday, March 18th, 2013 With No Comments »

A video projector, also known as a digital projector is basically a digital receiver that receives video signals from a video player before transferring the signals onto a projection screen as images. To ensure that images projected on the screen are of good quality, the projector makes use of extremely bright light while projecting images. Unlike those produced in the past, you are likely to come across a modern projector with functionalists that you can use to correct such inconsistencies as blurriness and curves. The use of this device has become very popular in many institutions including homes, theaters  conference rooms and educational/training institutions.

What are the different types of Projection Technologies?

One of the most important factors that you will need to consider when shopping for a video projector is a projector’s projection technology. Note that there are such technologies as Talaria, Eidophor, LIA and Schmidt-CRT technologies that are now obsolete. You will most likely find a modern projector with any of the technologies below:

  • CRT or Cathode Ray Tube technology – A projector designed with this technology projects images through three blue, red and green tubes. Although still in use, digital devices designed with this technology are gradually becoming less popular owing to the fact that they are bulky and adjusting image quality can also be difficult.
  • LCD or Liquid Crystal Display technology – Digital devices designed with this technology are the most popular across the globe. This type of projector is used for displaying images, data and video on a flat screen. This is mainly because they are not only affordable, but also suitable for use in home theatres. They are also simple and therefore very easy to use.
  • DLP or Digital Light Processing technology – Video projectors designed with this technology make use of digital micro mirror devices, which can be one, two or three in number. They determine the quality of images projected on a screen.

Although most of the popular digital projection devices are designed with the above technologies, there are those that are designed with such technologies as LED, LED/Laser diode and Laser diode.

Projection resolution: What it is?

Apart from a projector’s technology, another important aspect of this device that you should know is its display resolution. Most modern devices come with any of the following four display resolutions:

  • SVGA (800 X 600 pixels) resolution
  • XGA (1024 X 768 pixels) resolution
  • 720P (1280 X 720 pixels) resolution
  • 1080P (1920 X 1080 pixels) resolution

The cost of the device is mainly determined by the device’s resolution and technology as well as the amount of light that it produces. A device with high light output can be used in a room with too much ambient light and this will cost more than the one with less light output. The increased need for home entertainment has made video projection devices very popular. They are sold in the local and online stores that deal with entertainment devices. But, it is cheaper online than offline.

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