Does anyone how a TV works?

Question

How a TV works confuses me. Can someone explain to me how it works without those huge words!

Answer 1

Heres how a basic (picture tube) color TV works:

The tube has 3 electron guns in it, one for each color (red, green, and blue). They are aimed at the inside of the front of the picture tube, which has been coated with phosphorus that has chemicals added to it such that it makes a dot (pixel) glow either red, green, or blue when the stream of electrons hits it. If there is no electron stream for a given pixel, there is no glow and that pixel is black. If all of the streams are on at the same intensity, all 3 colors are on simultaneously for that pixel and it glows white. All other colors are determined by varying the intensity of the different color electron streams and combining them together. And, the streams are varied by the information in the TV signal to determine what color and how bright each pixel is.

These electron streams are deflected by plates on the sides of the electron guns that cause the stream to move back and forth across the picture tube. As the electron stream moves across the screen, it leaves a line of pixels that make up a tiny fraction of the whole picture. Then the electron stream is turned off and repositioned to begin another line of the picture.

To make a picture, the lines that are formed by the electron streams hitting the picture tube are first all of the odd lines that make up the picture (this is called a frame) and then it goes back to form all of the even lines of the picture. A frame (odd or even) is generated 60 times a second. So, the complete picture (both the odd and even frames) is generated 30 times a second.

The odd and even frames are used to prevent the picture from having a flickering effect. If the whole picture was put up on the screen at one time, the time it would take to refresh the screen (have the electron guns go back to the top and start making another picture) would be so long that it would look like those old movies where the picture flickers. But, by having the odd and even frames, each frame can be created fast enough that your eye can't detect the flickering (this is called persistence of vision - the eye's ability to see an image and hold it there for a split second).

The TV signals that contain all of the picture and sound information is modulated onto a radio frequency (RF) carrier or channel that is 6 MHz (megahertz) wide. Each channel has its own frequency band (channel 2 is from 54 MHz to 60 MHz, channel 3 is from 60 MHz to 66 MHz, and so on). These channels can either be broadcast separately as over-the-air TV channels, or they can be combined together as one broad spectrum of channels and transmitted through coaxial cables in a cable TV system.

Answer 2

In the most simple terms, it works like this....

At a TV station, cameras takes the pictures. In fact, they take 15 pictures a second. Then, they take ONE of those pictures and send it to you in the way I am going to describe.

You take this picture and write 525 (I think) lines across it. If you follow one of the lines, you will notice, color and darkness will vary along the line. If you start from line 1 (at the top) to the line 525 (at the bottom) and go in zig-zag fashion, you can create a loooooong thread with varying colors. You mark the beginning of the thread, and every beginning of the line.

Now, transmit this information in the following manner:


....

....


Now, on the recieving end (your TV), you start from the left top and lay the thread exactly as what marking says. Now, you just reconstructed the picture. Do this 15 times a second.

That's BASICALLY what happens. I omitted lots of technical details such as interlacing, but it takes way too much space to explain all the aspect of how TV works, and you asked to put this in simple terms.

Answer 3

NO. AppleTv in undemanding terms connects making use of a HDMI connection (digital), or a area video connection (analog). you could besides the shown fact that purchase an iPod docking station that helps video. those often sell for around $a hundred, and connect on your television via composite a/v (crimson, white, yellow), or s-video. you're taking your iPod that would carry video, dock it, and track your television to the in simple terms right enter- completed. the only seize to this form of doing issues is that it demands a video enabled iPod. human beings additionally accomplish a similar feat by making use of making use of an Xbox360 with homestead windows Media center to observe information on the computer on the television via a under pressure out or on the spot community...

Answer 4

Send an email to [e-mail]

Answer 5

you gotta have that remote thing to get it to work