algoshift

Reaching a mass of people via Facebook is, to some degree, relatively easy. If you have 50 to 100 people you can reach directly and they, in turn, reach out to their direct connections you'll "touch" a pile of people quickly.

However, from that to getting people to take action --be it install and app, vote for a cause, visit a website-- that's an entirely different matter.

In our case one of the things we came across is a demographic that simply does not use Facebook. Older parents of the very kids we are trying to help.

The next issue was triggered by a dialog that pops-up when you click on the vote button. Facebook tells you that you are about to share your profile and your friends list. Of course a lot of people recoiled at that immediately. The last thing parents of children with special needs want to do is open the doors to their facebook account. I get it. I absolutely do. We probably lost hundreds of potential supporters this way. It is perfectly understandable. I don't understand why facebook would not have the option to be able to simply log in or vote on something as a means of identifying yourself yet without granting access to your life (or projecting the fear of this happening).

I suppose the efficacy of trying to build an audience through facebook depends on your demographic. If your audience lives on facebook it is probably a great channel. If you audience does not or if they are concerned about their privacy there could be issues.

I guess the point of the short comment was lost: How can anyone say that any of the current crop of OS's is "wonderful"? Wonderful? Really?

Whether you use Windows or OSX (or both, as is my case) you can probably rattle off a sizable list of how these OS's have gotten screwed-up by their respective publishers. Someone saying "<OS name> is wonderful" and then going on about the reason it actually isn't is very funny.

Again, the comment was OS agnostic even though the thread is about OSX.

> OS X is wonderful

ROFL

Can a privately launched satellite in orbit be considered free from control from any one nation? Would my satellite be sovereign territory?

Might this be an idea for the future of DNS and highly-independent web hosting in some form? No cooling problems for shure!

Of course, there's the minor issue of a connection to the wired internet...

I want a .orbital TLD!

Forget the "cloud" how about "space"?

Hmmmm, isn't there a prominent web entrepreneur who's building a rocket company?

Prompted by an offline discussion I thought it'd be a good idea to talk about the other effects. I focused my post around the power requirements of the image processor circuitry. However, there are two additional components to an LCD display system: Display logic and Backlight power.

Display logic is, as the name implies, all of the circuitry required to drive the pixels. This is everything from the data connector on the raw LCD panel up to and including the TFT transistors on the glass itself and the transparent interconnects (also on the glass). The on-glass circuitry has complex parasitics and capacitive loading that also causes a fluctuation of drive current based on the randomness of the images.

Here's sample data from a 24 inch 1920 x 1200 LCD:

  24 inch, 1920 x 1200
  Idd  for full black screen = 1,700mA
  Idd for a black/white dot pattern = 3,050mA

As you can see, a pattern with maximal excursions in the data causes the display logic current (and therefore, power) to nearly double.

In very (very!) rough terms this current is also a function of display resolution: Twice as many pixels will demand double the current. Going back to the iPad 2 vs 3 example, the the new iPad has exactly four times the pixels of the iPad 2 display, therefore, it should require four times more display logic current than the older model under all uses cases.

The backlight may or may not demand more current as display resolution increases. Comparisons of displays of equal physical size but vastly different resolutions do not reveal a this effect to be an absolute rule. A lot depends on the design of the panel and the internal optics.

You are right, of course, however, I have built quite elaborate LED-based backlight systems and have metrics on this too. A few years ago we did a custom system with a 1,000 Watt (yes, one thousand) custom liquid-cooled RGB LED backlight. Performance depends on many things, from aperture ratios to the spectral transmission characteristics of the filters as well as how they match the emission spectra of the backlight elements.

With regards to getting in touch, email me at martin_05 the domain is rocketmail and TLD is .com