The point still stands that you were confusing symmetric and asymmetric keys. The largest RSA symmetric key that has been cracked is 64 bits, and that took ten years of an organized distributed process. Even taking Moore's law into account, 128bit keys will be secure for about 100 years. Only an unexpected breakthrough (such as quantum computing or discovered serious flaw in the algorithm) would speed that up.
My computer uses 3w in standby. That corresponds to 2kWh/month. Which costs about 40cents. It's not worth that much effort to save 40cents/month.
Overall, I average 400w at home (~300kWh/month). Using a zero-watt standby computer would reduce my power consumption by less than 1%. That is not very significant.
I can see how this might help for business that have lots of computer, but in most cases, those companies don't even put their computers in standby when not in use currently, so a zero-watt standby mode won't help them either.
There are much better ways of saving power, like encouraging companies to put desktops in standby when not is use for any length of time. That would save much more than 3w per computer.
(Infrared == heat) This is not quite true. If (infrared == heat) then (visible light == even hotter heat). Every thing emits light. Things at normal environmental temperature (0-100 degC) emit primarily in the long-wave to mid-wave IR (about 10000nm or so). A typical IR LED emits in the near-ir (about 900nm or so) which corresponds to about 1000 degC or so. Red light, which is about 700nm, corresponds to about 3000 degC or so. So saying infrared == heat is very misleading. Caveat: the number are off the top of my head so they may be slightly off.
A bright enough near-ir LED can damage your eyes, just as a bright enough visible LED can damage your eyes. The difference is that you notice the visible LED long before it starts to damage your eyes, but you won't notice the IR LED until perhaps it's too late. People who work with lasers (such as myself) have similar issues, you have to be very careful around IR lasers because you won't know if they are damaging your eyes until it's too late.
Given that, I doubt these LEDs are bright enough to do any damage.
It hasn't been pushed back again. The 2009 and 2012 are two independent deadlines. The deadline for turning off analog OTA broadcasts is February 17, 2009. That deadline was set in place by a early 2006 law and has not changed since.
The 2012 date is exclusively for cable, and this is the first date set for cable. The requirement set forth by the FCC is that cable companies are required to send analog television until at least 2012 at which time the FCC will reevaluate.
In the article, they are not talking about IR cameras. They are talking about simple IR motion sensors. They are not imaging sensors. And, by the way, IR camera scan reveal identifiable facial detail. Particularly NIR and SWIR cameras.
I use MythTV with digital cable using a QAM tuner. I am able to get all channels (including hi-def) digitally except for the premium ones (which I don't subscribe to anyway).
A set-top DVR is the only choice for a more-than-minimally-functional system. That's just ridiculous. I'd like to see you remotely schedule show and stream video over the internet with a set-top DVR from your cable company. MythTV can do this and a lot more.
A MythTV box is the only choice for a more-than-minimally-functional system.
Cablecard is the only way for someone with cable to receive the digital channels (i.e. channels 60-1000) without using the cable company's own cable box. That is false. I use a QAM tuner (pcHDTV HD3000) to receive digital and HD channels from my cable company, including ones that aren't available analog (100+), plus about 100 digital music channels.
However I can't get the premium channels (HBO/Showtime), since those are encrypted. Though I don't really care about those channels.
Also, according to the FCC, cable boxes with firewire outputs must be available by your cable company. You can use these with MythTV. However, I tried to get one from my cable company with no luck. Most people I talked to had no clue what I was talking about, and when I finally got someone to deliver a box, they sent one without the firewire out. So I gave up on that and focused on the QAM solution.
There is a common misconception that there are only 2 HDTV formats (1080i and 720p) there are in fact 6 in the ATSC standard that vary by resolution and framerate:
It is most likely that HD movies will be released in 1080p24, since the source material is 24fps (film). Encoding it at 60fps would be a waste of bandwidth.
I've been using Opera for about 5 years now. I have actually paid for it. It is well worth the money. It has several features that I like about it better than FF.
A big one (though it may seem insignificant) is that when you hit the back button it goes back immediately. With FF and IE, there is an annoying delay when you hit the back button and when the page appears, but with Opera, there is no noticable delay.
I tried the simplest application I could think of: Putty. And it worked. I ran Putty within Wine within X-windows within Knoppix within QEMU within WinXP. I wonder how much further I could take it...
By the way, I am posting this message within Konqueror within X-windows within Knoppix within QEMU within WinXP.
Slashdot Mirror
The point still stands that you were confusing symmetric and asymmetric keys. The largest RSA symmetric key that has been cracked is 64 bits, and that took ten years of an organized distributed process. Even taking Moore's law into account, 128bit keys will be secure for about 100 years. Only an unexpected breakthrough (such as quantum computing or discovered serious flaw in the algorithm) would speed that up.
My computer uses 3w in standby. That corresponds to 2kWh/month. Which costs about 40cents. It's not worth that much effort to save 40cents/month.
Overall, I average 400w at home (~300kWh/month). Using a zero-watt standby computer would reduce my power consumption by less than 1%. That is not very significant.
I can see how this might help for business that have lots of computer, but in most cases, those companies don't even put their computers in standby when not in use currently, so a zero-watt standby mode won't help them either.
There are much better ways of saving power, like encouraging companies to put desktops in standby when not is use for any length of time. That would save much more than 3w per computer.
A bright enough near-ir LED can damage your eyes, just as a bright enough visible LED can damage your eyes. The difference is that you notice the visible LED long before it starts to damage your eyes, but you won't notice the IR LED until perhaps it's too late. People who work with lasers (such as myself) have similar issues, you have to be very careful around IR lasers because you won't know if they are damaging your eyes until it's too late.
Given that, I doubt these LEDs are bright enough to do any damage.
"You MUST send your signal in unencrypted ATSC for the non-premium channels for your paying customers. They aren't doing that."
Not all cable companies. RCN sends all non-premium channels unencrypted over QAM.
It hasn't been pushed back again. The 2009 and 2012 are two independent deadlines. The deadline for turning off analog OTA broadcasts is February 17, 2009. That deadline was set in place by a early 2006 law and has not changed since.
The 2012 date is exclusively for cable, and this is the first date set for cable. The requirement set forth by the FCC is that cable companies are required to send analog television until at least 2012 at which time the FCC will reevaluate.
See http://en.wikipedia.org/wiki/Analog_television for more information.
According to http://memory-alpha.org/ Kirk was born 2233, and Spock was born 2232. They are only a year apart.
http://computer.howstuffworks.com/question238.htm
In the article, they are not talking about IR cameras. They are talking about simple IR motion sensors. They are not imaging sensors. And, by the way, IR camera scan reveal identifiable facial detail. Particularly NIR and SWIR cameras.
A MythTV box is the only choice for a more-than-minimally-functional system.
However I can't get the premium channels (HBO/Showtime), since those are encrypted. Though I don't really care about those channels.
Also, according to the FCC, cable boxes with firewire outputs must be available by your cable company. You can use these with MythTV. However, I tried to get one from my cable company with no luck. Most people I talked to had no clue what I was talking about, and when I finally got someone to deliver a box, they sent one without the firewire out. So I gave up on that and focused on the QAM solution.
There is a common misconception that there are only 2 HDTV formats (1080i and 720p) there are in fact 6 in the ATSC standard that vary by resolution and framerate:
l
720p24, 720p30, 720p60, 1080p24, 1080p30, 1080i60.
It is most likely that HD movies will be released in 1080p24, since the source material is 24fps (film). Encoding it at 60fps would be a waste of bandwidth.
See: http://www.hdtvprimer.com/ISSUES/what_is_ATSC.htm
Since the movie was shot at 24fps, they are almost definately using 1080p24 (24fps) which is lower bandwidth than 1080i (60 fields/sec).
DVDs are similar. Almost all DVD movies are stored as 480p24. It's the DVD player's job to convert it to 60i when playing back on an NTSC TV.
They may start with batteries charged with 5kWh of stored energy
a sses/solar/
http://www.wsc.org.au/2005/competition/vehicle.cl
There is an ad blocker available for Opera:
http://www.monroeworld.com/operafilter/
And it works very well.
I've been using Opera for about 5 years now. I have actually paid for it. It is well worth the money. It has several features that I like about it better than FF.
A big one (though it may seem insignificant) is that when you hit the back button it goes back immediately. With FF and IE, there is an annoying delay when you hit the back button and when the page appears, but with Opera, there is no noticable delay.
I also like the mouse gestures in Opera.
> Can it run WINE?
Yes, it can.
I tried the simplest application I could think of: Putty. And it worked. I ran Putty within Wine within X-windows within Knoppix within QEMU within WinXP. I wonder how much further I could take it...
By the way, I am posting this message within Konqueror within X-windows within Knoppix within QEMU within WinXP.
- pi