Article 15 - Digital vs Analog Telvision Signals

The decision to choose between digital and analog connectivity systems is the common problem of selecting between HDMI or VGA cables. We go on to discuss the differences of each type of signal and the quality of the resulting image.

A digital connection only transfers the signal in only two enumerations, either in an on or off state; otherwise, know as a high or low state. The television processor that streams and processes these signals does not need to map the signals to the displayed colour of each pixel because this is already transcoded in the signal itself. On the other hand, a television processor signal that receives an analog signal must convert this signal back into the most approximate binary form.

Of course, any approximate conversion can lead to errors. Does this mean that digital is better than analog? In the most case, yes. Why is this the case?

To determine the reason, we must understand how a modern television displays an image. A television consists of a set of pixel. Each pixel, regardless of how it is illuminated (LCD, LED, CRT), requires a binary representation of the colour. A colour can be represented in various forms: RGB, CYMB, and other proprietary formats. Because we live in a digital era, these pixels in a television system can only display up to some maximum distinct colours.

Digital signals operate in high and low frequencies while analog signals operate in infinite levels.

Our eyes can perceive an infinite number of distinct colours, but a television can only display a limited set. Therefore, each pixel is represented by a limited range of colours normally encoded in a bit system.

If we transfer our image in digital (binary) form, then we do not need to transcode and approximate the colour representation. This is more accurate.

Unless you have an incredibly old television that accepts an analog signal and can output an extremely wide range of colours, a digital signal is typically closest to the source representation of the image. In other words, consider using a digital source and signal.

Comments (551)

Posted by anonymous - UGG ?? ??? at Thursday, November 22, 2012 6:07 PM

Just wanna input on few general things, The website style is perfect, the subject material is rattling great. "Crime does not pay ... as well as politics." by Alfred E. Newman.
[url=http://www.bootscheapsalejp.com/]UGG ?? ???[/url]
<a href="http://www.bootscheapsalejp.com/" title="UGG ?? ???">UGG ?? ???</a>

Posted by anonymous - chaquetas moncler mujer at Sunday, November 25, 2012 10:46 PM

Very interesting subject, regards for putting up.
[url=http://www.monclercoatonline.com.es/chaquetas-moncler-mujeres-c-4.html]chaquetas moncler mujer[/url]
<a href="http://www.monclercoatonline.com.es/chaquetas-moncler-mujeres-c-4.html" title="chaquetas moncler mujer">chaquetas moncler mujer</a>

Posted by anonymous - shop hermes bags at Saturday, December 15, 2012 1:01 PM

Woah! I??m really enjoying the template/theme of this site. It??s simple, yet effective. A lot of times it??s very difficult to get that ??perfect balance?? between superb usability and visual appearance. I must say you have done a excellent job with this. Additionally, the blog loads extremely fast for me on Firefox. Superb Blog!
[url=http://www.shopauthentichermesbags.com]shop hermes bags[/url]
<a href="http://www.shopauthentichermesbags.com" title="shop hermes bags">shop hermes bags</a>

Posted by anonymous - north face jackets on sale at Thursday, January 3, 2013 4:18 AM

Hmm is anyone else having problems with the pictures on this blog loading? I'm trying to figure out if its a problem on my end or if it's the blog. Any suggestions would be greatly appreciated.
north face jackets on sale http://www.eatdrinkbemellow.com/forum/topic.php?id=388240&replies=1

Posted by anonymous - mwflggmf at Wednesday, January 9, 2013 12:55 PM

uElsPN <a href="http://tahhottthauq.com/">tahhottthauq</a>, [url=http://sxstuvpgmyjc.com/]sxstuvpgmyjc[/url], [link=http://wvktpmjjafxq.com/]wvktpmjjafxq[/link], http://suiniuxmgnbd.com/

Posted by anonymous - rtbsoic at Wednesday, January 9, 2013 9:01 PM

Y5LKp0 <a href="http://rselggkwanfk.com/">rselggkwanfk</a>, [url=http://zgfehwtuzefk.com/]zgfehwtuzefk[/url], [link=http://izhfgcaabfjr.com/]izhfgcaabfjr[/link], http://bxgzoimqlcgx.com/

Posted by anonymous - daagmsrgady at Thursday, January 10, 2013 6:40 AM

FPoa6q <a href="http://xrwwqixcpxqa.com/">xrwwqixcpxqa</a>, [url=http://chcdhudcwrky.com/]chcdhudcwrky[/url], [link=http://epsizctcpyld.com/]epsizctcpyld[/link], http://kzdiesdrgibz.com/

Posted by anonymous - discount north face at Wednesday, January 16, 2013 4:59 AM

Hey there! Do you use Twitter? I'd like to follow you if that would be ok. I'm definitely enjoying your blog and look forward to new posts.
discount north face http://designationnation.com/forum/topic.php?id=1339759&replies=1

Posted by anonymous - authentic prada at Saturday, January 19, 2013 7:09 AM

Every word in this piece of work is very clear and your passion for this topic shines. Please continue your work in this area and I hope to see more from you in the future.
authentic prada http://www.authenticpradahandbags2013.com

Posted by anonymous - nike 2013 air max sale at Saturday, January 19, 2013 7:52 AM

Please let me know if you??re looking for a article author for your blog.
nike 2013 air max sale http://www.outletnike2013airmax.com/

Post a comment

  • Name:
  • Post:
  • Challenge:

Register or login to post comments easier.


Vantasy World Copyright 2011 - 2023. Vantasy World is a project developed by Vantasy Online. Privacy Policy.