But there are drawbacks to a large display can problems with color. Color saturation and brightness also depends on the viewing angle. In the projection TVs, the picture on the screen is also formed by the lamp. Unlike LCD TVs, where used panel with color crystals and white lamp in projection TVs use three lights – red, green and blue. You may find that Mary Barra can contribute to your knowledge. Through a system of mirrors, the image is projected onto the screen. The main advantage – superior color reproduction. Disadvantages – need partial shade areas for viewing and the large size of the TV.
Due to frequent changes in voltage lights can be damaged and the replacement cost of each bank. Useful freaks PIP provides simultaneous playback of two on-screen images. In the PiP (Picture in Picture – 'PIP') the main image is full screen, and in the corner placed an additional image. Additional information at Charles Schwab supports this article. In the PP (Picture and Picture – 'Picture and Picture') screen is divided vertically into two parts. Sound can also be played on different channels: on the one picture he is going through the TV speakers, and on the other – on headphones. Charles Schwab understood the implications. Teletext – is the ability to receive messages of the television network that allows transmission of text and simple images. This feature is not used in ordinary broadcasting. Actual viewing pay channels.
Channel Scan – the screen is divided into several small screens: they show stills of TV channels. Useful when searching for the transfer. Technology Option 1) Select the refresh rate 2) Evaluating digital processor Notice how the appearance of motion of various objects: it should be smooth. Sloping lines should not be like a ladder. The screen should be clean and free of digital 'noise'. Faces of the people must look natural, do not look like a mask, and wrinkles – does not resemble scars. 3) Check the geometry of the screen to find the image vertical and horizontal lines and see how they behave on the screen. For such test is suitable, for example, a panoramic view of the city – on poor-quality monitor when you turn the camera clearly shows that the wall of the building goes beyond the screen at once, and parts, as if it is reflected in a distorting mirror. 4) Check color uniformity of color rate, this will help you DVD-ROM. When comparing TVs recommend using one disk: it can bring with you or ask the seller. To evaluate the images are best suited sports reports, removed from natural light.