Given the massive market penetration of this device and associated service, what do you know about your phone? Do you know how GSM works? No? How about terms like 3G or Edge networks? No? Ok, something simple, Bluetooth. Ah, at least you’ve heard of that one. Last term: SAR? Nothing? Well this one might be worth learning about: Specific Aborption Rate. SAR is the amount of radiation your body is exposed to from any given device.
Cell phones are largely taken for granted. There are a few who resist the technology either out of some fear of consequences to health or society, or out of a longing to maintain some distance or boundaries. With the exception of these remaining 2 or 3 people the rest of the world’s population, are eating it up. According to the International Telecommunications Union, in 2006 over 90% of the developed world’s population subscribed to a cellphone service. Oh, sure but no one in the developing world has a cell phone though, right? Well the ITU statistics estimate that in 2006 more than 1 in 3 people had a cellphone in the developing world.
Well all these people out there talking on their cellphones, the FCC is looking out for us with a rating that says whether a device can be sold in the US. In order to get FCC approval, a cellphone has to have meet a level deemed safe by the US, a level that corresponds to a SAR of 1.6W/kg. This measure of radiation is a measurement of how much energy from your mobile device is getting into your body. For comparison purposes Europe has the SAR capped at 2.0W/kg and Canada has the SAR capped at 1.6W/kg as in the US.
The level reported on the phone manual or a given website is likely to be the maximum value, with lesser values being possible on phones that offer multiple signal strength levels for battery performance issues, or based on how the phone is used. Even given this allowance, the maximum values for some of todays phones range from (10 lowest) .14-.4 to the 10 highest at 1.5-1.6. My phone, the Samsung Upstage falls in the high range of “safe” at 1.4W/kg.
The goodnews is that, if the FCC is right and 1.6 is a safe level, everyone in the US is safe, right? That assumes that the FCC is right on about what a safe level is. Whether I should or not, I trust that the FCC is making the most educated decision they can, however since cellular phones have not been around terribly long, anything they do is going to be best on projections, analysis of similar themes from previous knowledge bases, and other very scientific methods. The problem seems to be that we just don’t really know right now, and that we are making a very educated guess but it is ultimately a guess, a guideline.
For today’s cellphone users, you can either rest assured that any device sold is below the threshold of radiation that the FCC has deemed safe, or you can take a further step in considering the SAR of the various phones you are considering purchasing and weighing that data along with all the other. Another option is Bluetooth, again a new technology but similar in concept to cellular. You have a radio transmitter in your cellphone and one in the Bluetooth headset. The difference between cellular and Bluetooth is the distance and the associated power levels.
It takes significantly less power to send a radio wave 5 meters than it does 5 kilometers. As a result it shouldn’t be surprising that while the typical rating of the 10 lowest SAR values for cellphones is 0.2W/kg, the typical rating of a Bluetooth headset is closer to 0.002W/kg. That translates to a Bluetooth device having approximately 1/100th the SAR level of a “low” rated cell phone.
So save some money while avoiding the lunatic/cyborg look of the Bluetooth headset and rest assured that the FDA is doing their best to look out for you. Or, conversely, pick up a Bluetooth headset for anywhere from $20-$120 dollars and add a bit of peace of mind to your potentially paranoid arsenal of ways to live a longer happier life. I’m happy to have a Bluetooth headset now, and quite glad to have my wife using one.
Links
How Stuff Works – Cellular Radiation:
http://electronics.howstuffworks.com/cell-phone-radiation3.htm
FCC SAR Page:
http://www.fcc.gov/cgb/sar/
Cell Phone Radiation Levels Discusion and Charts:
http://reviews.cnet.com/4520-6602_7-5020355-1.html
ITU Statistics:
http://www.itu.int/ITU-D/ict/statistics/maps.html
Bluetooth SAR Information:
http://www.bag.admin.ch/themen/strahlung/00053/00673/03571/index.html?lang=en#sprungmarke3_5
Friday, May 30, 2008
Tuesday, May 20, 2008
Amon and Mike with Liberty Bell
Just got back from Philly seeing Patti, and the various sights. I think my favorite part was the food. Marathon Grille was a nicer place, Lemon Grass was the best curry I've ever eaten (and at a Prix Fixe $9.95 for appetizer, soup, and entree very reasonable), and the cheesesteak was decent.
Click through HERE to see my 32 favorite photos from the weekend.
Click through HERE to see my 32 favorite photos from the weekend.
Saturday, May 17, 2008
Amon Odessey
Got a picture of Amon so I could at least prove SHE was there ;)
It was her time to chaperone the 2008 Prom for her school. It was a good opportunity to get the camera out. You can see more pictures at my Flickr account:
Prom Kids
A few kids at the Prom. Thought the colors and ghostly images of the fluttering dresses were nice against the uniformity of the white rails.
Balcony scene by Night II
Amon was required to chaperone the 2008 Prom at her school. Fortunately the Prom was on a dinner cruise boat, giving me some opportunities to take some interesting photos.
Wednesday, April 16, 2008
Cooking Healthier
Audio quote of the day:
“Because I like to eat, is that such a crime?” – School of Rock (click above for audio)
Yeah, I’m sorta on a diet. I really want to go on a diet, but unfortunately, I’m at this point where I’ve really started loving to cook. I sit at work and when I’m not drafting in Autocad, writing up meeting minutes, or walking around the US Capitol, all I can think about or talk about is cooking. I just read Soul of a Chef, which was probably not the best book to read if you're wanting to stop cooking so much.
For the first time in my life I actually have good things to cook with AND someone to cook for. I had to have the basics of oven cooking and sautéing down from when I cooked for 50 guys every week in college. Now that I’m scaling back the cooking though, I’m learning about pan frying, starting things on the stove and finishing them in the oven, broiling, making pan sauces and gravies, seasoning, and all sorts of other fun activities.
Cooking is actually relaxing for me, assuming I’m not trying a recipe I made up for the first time with 20 people eating. I like that when I’m cooking my brain doesn’t start thinking about work, bills, or any of life’s other little attention grabbers. I’m focused on the done-ness of the meat, whether the water is boiling yet, when I should start steaming the vegetables and making sure the pasta isn’t going past al dente. The kitchen is full of the fragrance of onion, garlic, oregano, chilli powder, or whichever other aromatics are being used in the nights meal.
And absolutely best of all, when it's over I get to enjoy a nice meal and the satisfaction that “I made this.” Honestly, it’s a great feeling knowing that the meal your eating might cost you 20 or 30 bucks in a restaurant.
However, it’s also a great way to NOT lose weight. Originally, I would make too much, and then it would all get eaten because it tasted good and was there. The last few weeks though, I’ve started portioning out the “left overs” before I even plate up the meal, this makes it less tempting to eat too much.
Now, I’m trying to come up with recipes that are fun to cook (lots of chopping, cooking, seasoning, etc.) but are healthier. Amon isn’t a big fan of fish, which would be one easy method for making things healthier, but she does like quite a few vegetables so I’m going to start trying to feature the vegetables more prominently with the carbs as more of an accent and make sure to use chicken and turkey more than fatty cuts of beef. I noticed that ground turkey seems to be much cheaper than ground beef so we’ve been using more of that recently.
So now you all know, my evil secret’s out. I like to cook, is that such a crime? Now I just need to balance loving to cook, with cooking healthier.
“Because I like to eat, is that such a crime?” – School of Rock (click above for audio)
Yeah, I’m sorta on a diet. I really want to go on a diet, but unfortunately, I’m at this point where I’ve really started loving to cook. I sit at work and when I’m not drafting in Autocad, writing up meeting minutes, or walking around the US Capitol, all I can think about or talk about is cooking. I just read Soul of a Chef, which was probably not the best book to read if you're wanting to stop cooking so much.
For the first time in my life I actually have good things to cook with AND someone to cook for. I had to have the basics of oven cooking and sautéing down from when I cooked for 50 guys every week in college. Now that I’m scaling back the cooking though, I’m learning about pan frying, starting things on the stove and finishing them in the oven, broiling, making pan sauces and gravies, seasoning, and all sorts of other fun activities.
Cooking is actually relaxing for me, assuming I’m not trying a recipe I made up for the first time with 20 people eating. I like that when I’m cooking my brain doesn’t start thinking about work, bills, or any of life’s other little attention grabbers. I’m focused on the done-ness of the meat, whether the water is boiling yet, when I should start steaming the vegetables and making sure the pasta isn’t going past al dente. The kitchen is full of the fragrance of onion, garlic, oregano, chilli powder, or whichever other aromatics are being used in the nights meal.
And absolutely best of all, when it's over I get to enjoy a nice meal and the satisfaction that “I made this.” Honestly, it’s a great feeling knowing that the meal your eating might cost you 20 or 30 bucks in a restaurant.
However, it’s also a great way to NOT lose weight. Originally, I would make too much, and then it would all get eaten because it tasted good and was there. The last few weeks though, I’ve started portioning out the “left overs” before I even plate up the meal, this makes it less tempting to eat too much.
Now, I’m trying to come up with recipes that are fun to cook (lots of chopping, cooking, seasoning, etc.) but are healthier. Amon isn’t a big fan of fish, which would be one easy method for making things healthier, but she does like quite a few vegetables so I’m going to start trying to feature the vegetables more prominently with the carbs as more of an accent and make sure to use chicken and turkey more than fatty cuts of beef. I noticed that ground turkey seems to be much cheaper than ground beef so we’ve been using more of that recently.
So now you all know, my evil secret’s out. I like to cook, is that such a crime? Now I just need to balance loving to cook, with cooking healthier.
Saturday, April 05, 2008
Cherry Blossom Kiss
Yes, the pandamonium that is the yearly Cherry Blossom Festival is upon us. This means that it's time for people who never come into DC to break out the bikes, the strollers, and the group T-shirts and clog the metro system. Smithsonian is once again hung with the banner, "Abandon Hope All Ye Who Enter Here (have ticket ready when entering and exiting, stand back - doors closing)".
Little bit of cheesy romance for the sheer fun of it.
As usual, head over to my Flickr account (a link now lives permenantly over on the right hand side of this page with the other links) to see the rest of the pictures from this year's Cherry Blossom Festival outing, as well as all my other pics I've posted to Flickr.
CHEERS!
Jefferson Airplane II
I also never realized that the flight path from DCA (Regan International Airport) took the planes in such a great route. I'll have to keep this in mind for future night photographs.
Abstract Cherry Blossoms II
Ok, you don't say that, but when you see what you accidently did while playing around with the white balance settings, and you realize WHY it did it, you start tweaking things a bit and get the resulting picture. And now you've answered your original question. "There's at least one more way to photograph a cherry blossom."
Saturday, March 29, 2008
Family Fun
Amon and I had the pleasure of hosting my Dad in town a couple weekends back. Schedules being what they are I wasn't able to get around to posting any pictures until today, but it was a lot of fun having him here. He got a cross-country ride from our friends the Milsters (Thanks Mark!) and was in town Friday through Sunday morning. Early morning. We dropped him off with the Milsters at 6:00am on Sunday. They had the hard work though, driving from DC to St. Louis straight through. Ugh. I'm glad they were up to it, because I wouldn't have been.
It was entirely too short, but short's better than not at all. It was great having you out here Dad.
Mike
It was entirely too short, but short's better than not at all. It was great having you out here Dad.
Mike
Dad at the National Archives
The first place we went once Dad was in town was the National Archives. This is the building featured in the first National Treasure movie; it's where they store/display the Bill of Rights, Declaration of Independence, and other significant "archive-worthy" documents and artifacts of our country.
Library of Congress
Amon had the idea to go to the Library of Congress. If you know my Dad, the you know there couldn't be a better idea than that.
Amon in front of Supreme Court
Amon in front of the Supreme Court after we left the Library of Congress.
Monday, March 10, 2008
Experimental Photography Set
I've added a new set to my Flickr account for some experimenting I'm doing with my new camera. It's nothing new in the photography world so don't get excited. I could tell you were starting to. I'm just practicing some techniques that people have been doing for awhile but that I haven't tried before. The photos that are in the set right now are for motion tracking. I was encouraged to do this by checking out the Flickr account of an acquaintance from NCC, David Russel. He made some suggestions for this type of image and I thought I’d give it a go.
The images will likely be familiar to anyone who’s seen photos from a race or seen a single car advertisement. The idea is that while a subject is moving you pan with them. You are then able to use a slightly longer shutter speed because, relative to the frame, they aren’t moving much. However, because the background IS moving, relative to the frame, it gets blurred out. The result is an image where the main subject is relatively sharp, and the background gives a feel of movement.
This is nice for two reasons. One reason is the aforementioned sense of motion. It’s great for giving a picture a sense of dynamics and energy. The second reason has to do with the blurring of the background. Just like using a large aperture (f/3.5-f/1.4) the motion tracking technique results in the desired subject being clear while everything else around it is blurry. Using aperture for this technique results in an out of focus background, puddles of color, while the motion tracking technique results in an environment that is, well, blurred, often with trails instead of puddles. It’s hard to describe, but definitely a different feel.
Mike's motion tracking experiment:
http://www.flickr.com/photos/mcolburn/sets/72157604088917873/
Also, note the difference between motion tracking blur…
And aperture/out of focus blur (lamps), (Amon)
The images will likely be familiar to anyone who’s seen photos from a race or seen a single car advertisement. The idea is that while a subject is moving you pan with them. You are then able to use a slightly longer shutter speed because, relative to the frame, they aren’t moving much. However, because the background IS moving, relative to the frame, it gets blurred out. The result is an image where the main subject is relatively sharp, and the background gives a feel of movement.
This is nice for two reasons. One reason is the aforementioned sense of motion. It’s great for giving a picture a sense of dynamics and energy. The second reason has to do with the blurring of the background. Just like using a large aperture (f/3.5-f/1.4) the motion tracking technique results in the desired subject being clear while everything else around it is blurry. Using aperture for this technique results in an out of focus background, puddles of color, while the motion tracking technique results in an environment that is, well, blurred, often with trails instead of puddles. It’s hard to describe, but definitely a different feel.
Mike's motion tracking experiment:
http://www.flickr.com/photos/mcolburn/sets/72157604088917873/
Also, note the difference between motion tracking blur…
And aperture/out of focus blur (lamps), (Amon)
Friday, March 07, 2008
Potent Potables for 1000
Wanted to share two examples of authors treating/dealing with words as powerful things. As we listen to sound-bite upon sound-bite from various Presidential candidates and endless commentators, it doesn't hurt to remember what powerful things words are.
"...we should become aware of what we are doing when we speak, of the ancient, fragile, and (well used) immensely potent instruments that words are." - Lewis, Studies in Words
"He chanted a song of wizardry,
Of piercing, opening, of treachery,
Revealing, uncovering, betraying.
Then sudden Felagund there swaying
Sang in answer a song of staying,
Resisting, battling against power,
Of secrets kept, strength like a tower,
And trust unbroken, freedom, escape;
Of changing and of shifting shape
Of snares eluded, broken traps,
The prison opening, the chain that snaps." - Tolkien, Silmarillion
"...we should become aware of what we are doing when we speak, of the ancient, fragile, and (well used) immensely potent instruments that words are." - Lewis, Studies in Words
"He chanted a song of wizardry,
Of piercing, opening, of treachery,
Revealing, uncovering, betraying.
Then sudden Felagund there swaying
Sang in answer a song of staying,
Resisting, battling against power,
Of secrets kept, strength like a tower,
And trust unbroken, freedom, escape;
Of changing and of shifting shape
Of snares eluded, broken traps,
The prison opening, the chain that snaps." - Tolkien, Silmarillion
Wednesday, March 05, 2008
Effects of Technology
As I was sitting at my desk trying to figure out the answer to this latest word problem one thought ran through my mind, I wish my teacher would let me use a calculator. In eighth grade, my teacher wouldn’t let us use a calculator to figure out the math problems because she had a firm grasp on a very important principle: when we no longer NEED to do a task ourselves, we typically don’t. At the very beginning I want to point out that I understand this is not a hard and fast rule and that I realize there will be eager souls that don’t fall for this laziness, and that there will be some who keep doing a task even after they could pawn it of on someone or something else purely because they enjoy it. The point is, those people are absolutely in the minority, they are the exception.
Calculators, the internet, and cell phones, have had dramatic impact to the progress of knowledge, the advancement of business, and the altering of the fundamentals of human interaction. Think about it, when was the last time you did long division or solved a quadratic equation by hand, went to the library to research the history of some topic of debate among friends, or dialed a number from memory? Maybe you’ve done one or two of these things, but most likely, thinking about it made you realize how much different it is now than when you were younger. The times they are a changing, and now even faster than ever before.
When technology comes along that makes our life easier, it is a simple thing to embrace that and thank the R&D firms for the wonderful gifts they’ve given us: we can listen to any song we own, instantly, wherever we are, find pictures and videos for free at home or on the go, talk to almost anyone we want to whether we are in a park, a car, or the bathroom, and the only time I’ve solved a complex equation by hand in the last 4 years was because I wanted to see if I still could.
It’s great that I no longer have to remember the phone numbers of every relative, friend, and random person I meet. However, it’s a bit frightening that the only 3 numbers I can think of right now are my personal cell number, my work number, and my parent’s home number. Two of those three are because they haven’t changed in 8 years and one because I have to give it out on a daily basis. Other than those three numbers I couldn’t tell you a single cell phone number, not even my wife’s and, personally, that scares me.
The future of “technology” reads more like a fantasy novel than a science fiction novel every day. In Hogwarts the pictures in the newspaper and in peoples frames move about – and advances in thin displays and flexible displays mean this type of technology is less than 10 years away; early adopter technology can be purchased today. Magic bought with money is called technology, and the bounds between science and science fiction is wearing thinner every day.
The question is, what consequences are we willing to live with, even embrace as the outcome of progress? Hopefully, we all enter into the new world only after having thought very carefully about what kind of life we want to have, and where our priorities are.
Contact Lenses for super human vision/real time information updates?
Flexible displays “printed” into the rest of the newspaper?
Calculators, the internet, and cell phones, have had dramatic impact to the progress of knowledge, the advancement of business, and the altering of the fundamentals of human interaction. Think about it, when was the last time you did long division or solved a quadratic equation by hand, went to the library to research the history of some topic of debate among friends, or dialed a number from memory? Maybe you’ve done one or two of these things, but most likely, thinking about it made you realize how much different it is now than when you were younger. The times they are a changing, and now even faster than ever before.
When technology comes along that makes our life easier, it is a simple thing to embrace that and thank the R&D firms for the wonderful gifts they’ve given us: we can listen to any song we own, instantly, wherever we are, find pictures and videos for free at home or on the go, talk to almost anyone we want to whether we are in a park, a car, or the bathroom, and the only time I’ve solved a complex equation by hand in the last 4 years was because I wanted to see if I still could.
It’s great that I no longer have to remember the phone numbers of every relative, friend, and random person I meet. However, it’s a bit frightening that the only 3 numbers I can think of right now are my personal cell number, my work number, and my parent’s home number. Two of those three are because they haven’t changed in 8 years and one because I have to give it out on a daily basis. Other than those three numbers I couldn’t tell you a single cell phone number, not even my wife’s and, personally, that scares me.
The future of “technology” reads more like a fantasy novel than a science fiction novel every day. In Hogwarts the pictures in the newspaper and in peoples frames move about – and advances in thin displays and flexible displays mean this type of technology is less than 10 years away; early adopter technology can be purchased today. Magic bought with money is called technology, and the bounds between science and science fiction is wearing thinner every day.
The question is, what consequences are we willing to live with, even embrace as the outcome of progress? Hopefully, we all enter into the new world only after having thought very carefully about what kind of life we want to have, and where our priorities are.
Contact Lenses for super human vision/real time information updates?
Flexible displays “printed” into the rest of the newspaper?
Monday, February 25, 2008
Emerging Technology
Being a good little cog in the machine, most of us have probably heard talk about "HDTV", "Digital TV", Blu-ray, HDMI, DVI, and all sorts of other terms fly around that seem to amount to "Buy more TVs and black boxes".
Thought I'd put together the following summary for anyone curious. Of course Wikipedia is a great place to go for these sorts of questions, regardles of how you feel about using it for higher brow subjects like literary criticism.
The "Idiot's Guide to Emerging AV technology" might read something like this (un-edited):
Difference between Digital and HD
HDTV is short for High Definition TV and can be either a digital or analog signal. You can send a "HD" signal over the same 15 pin cable that has been used to hook up computer monitors for the last umpteen years. This is analog HD. You can also send an "HD" signal over a digital cable, such as a DVI-d cable or an HDMI cable.
DIGITAL TV or a DIGITAL broadcast is simply a signal that is binary, 1/0, like computer information. This is different from standard, analog, TV simply by being digital. Standard TV was sent with waves of energy, lots of different frequencies. As the radio wave changed shape (taller, longer, etc.) the image on your TV changed shape. With Digital TV the information for each pixel is sent using binary information, data, and then your TV or monitor creates the image by setting each pixel to the desired color and brightness. It updates this image so many times per second that the image moves.
Digital TV doesn't NECESSARILY equal better image or higher resolution. Digital TV can be either standard definition (what you see on DVDs or cable TV right now) or high definition (see below).
Digital TV Switchover - In February 2009 the federal government has mandated that all broadcasters switch over to purely digital signals. Don't worry. This means absolutely nothing for you unless you get your TV "off the air", which is fancy language for "I use an antenna". If you use an antenna, then you WILL be affected. People who only have an antenna will have to use a digital tuner to get the signal. If you purchased a TV in the last 2 years, chances are you have this tuner. If not, you can get a coupon from the government for $40.00 off the price of a digital tuner. If you have a TV capable of displaying HD content, the good news is that the switch to digital broadcasts means you can now pick up HD content for free off the air, when the broadcaster chooses to send it.
The old "off the air" system was refered to by the acronym NTSC and the new system is called ATSC. That is what you're looking for on your TV to know whether or not you'll need a separate tuner after Feb. 2009 to view TV with an antenna. Keep in mind that if you get cable or satellite, then the provider and their set top box will take care of this switch over for you.
My new TV has a digital (ATSC) tuner and with a basic set of rabbit ears I've been able to watch glorious HD content, for free, from PBS and networks like ABC...including Lost in HD. PBS has some of the most gorgeous free HD content out there. They have an entire channel dedicated to HD that includes beautiful on-site travel programs, science, and lots of other stuff.Blu-ray - Yes, Blu-ray has won this current format war. What does that mean? If you have an HD capable TV (at least 720p) then you can purchase a Blu-ray player, re-purchase all your movies (or just start buying Blu-ray), and watch better looking movies. Yes it's a noticeable difference, mostly on larger TVs. If you have a TV less than 25", it probably won't be an earth shattering experience. Keep in mind that with the pace technology is evolving, the next "Big" shift in technology will likely be streaming or downloaded HD, and unless you are chomping at the bits to have the latest in HD home entertainment, you're probably better suited to wait a year or so. If nothing else, prices should come down from over $400.00 for a player to closer to the $150-$200 mark.
Emerging Technologies - What's coming in the next few years? Well, the early adopter technology is out now which means that, if successful, more widespread devices should be out within 2 years (right around the time Blu-ray COULD be hitting its stride). I'm talking about streaming HD. The benefits? Imagine being able to sit down on your couch and, with access to the entire Netflix or Blockbuster library, pick what movie you want to rent/buy. In less time than it takes to heat up the popcorn, the movie is at your TV and ready to watch. Yes, in HD and with all the control (play/pause/FF/RW/Chapters/Etc) that DVD has spoiled you with. Right now this takes the form of either a TiVo box or AppleTV, however with Blockbuster and Netflix both wanting in on the action, it's likely there will be significantly more options within 2 years.
Essentially, you would be downloading the movie either permenantly (buying), or temporarily (renting) to a hard drive in a box sitting under your TV. The key here is interface. Most consumers don't want to have to operate a computer while watching a movie. They want any computer involved to be as transparent as possible. They want to sit down with a remote, and watch a movie. Period. If the companies involved can grasp this, it will make Blu-ray a moot point as people won't have to go out and buy a physical disc whenever they want to watch a movie.
-edit 3/5/08-
Apply here for a DTV Tuner if you have an old TV AND use an antenna.
-end edit-
Wikipedia on Blu-ray
Wikipedia on HD-TV
Wikipedia on Digital TV
Thought I'd put together the following summary for anyone curious. Of course Wikipedia is a great place to go for these sorts of questions, regardles of how you feel about using it for higher brow subjects like literary criticism.
The "Idiot's Guide to Emerging AV technology" might read something like this (un-edited):
Difference between Digital and HD
HDTV is short for High Definition TV and can be either a digital or analog signal. You can send a "HD" signal over the same 15 pin cable that has been used to hook up computer monitors for the last umpteen years. This is analog HD. You can also send an "HD" signal over a digital cable, such as a DVI-d cable or an HDMI cable.
DIGITAL TV or a DIGITAL broadcast is simply a signal that is binary, 1/0, like computer information. This is different from standard, analog, TV simply by being digital. Standard TV was sent with waves of energy, lots of different frequencies. As the radio wave changed shape (taller, longer, etc.) the image on your TV changed shape. With Digital TV the information for each pixel is sent using binary information, data, and then your TV or monitor creates the image by setting each pixel to the desired color and brightness. It updates this image so many times per second that the image moves.
Digital TV doesn't NECESSARILY equal better image or higher resolution. Digital TV can be either standard definition (what you see on DVDs or cable TV right now) or high definition (see below).
Digital TV Switchover - In February 2009 the federal government has mandated that all broadcasters switch over to purely digital signals. Don't worry. This means absolutely nothing for you unless you get your TV "off the air", which is fancy language for "I use an antenna". If you use an antenna, then you WILL be affected. People who only have an antenna will have to use a digital tuner to get the signal. If you purchased a TV in the last 2 years, chances are you have this tuner. If not, you can get a coupon from the government for $40.00 off the price of a digital tuner. If you have a TV capable of displaying HD content, the good news is that the switch to digital broadcasts means you can now pick up HD content for free off the air, when the broadcaster chooses to send it.
The old "off the air" system was refered to by the acronym NTSC and the new system is called ATSC. That is what you're looking for on your TV to know whether or not you'll need a separate tuner after Feb. 2009 to view TV with an antenna. Keep in mind that if you get cable or satellite, then the provider and their set top box will take care of this switch over for you.
My new TV has a digital (ATSC) tuner and with a basic set of rabbit ears I've been able to watch glorious HD content, for free, from PBS and networks like ABC...including Lost in HD. PBS has some of the most gorgeous free HD content out there. They have an entire channel dedicated to HD that includes beautiful on-site travel programs, science, and lots of other stuff.Blu-ray - Yes, Blu-ray has won this current format war. What does that mean? If you have an HD capable TV (at least 720p) then you can purchase a Blu-ray player, re-purchase all your movies (or just start buying Blu-ray), and watch better looking movies. Yes it's a noticeable difference, mostly on larger TVs. If you have a TV less than 25", it probably won't be an earth shattering experience. Keep in mind that with the pace technology is evolving, the next "Big" shift in technology will likely be streaming or downloaded HD, and unless you are chomping at the bits to have the latest in HD home entertainment, you're probably better suited to wait a year or so. If nothing else, prices should come down from over $400.00 for a player to closer to the $150-$200 mark.
Emerging Technologies - What's coming in the next few years? Well, the early adopter technology is out now which means that, if successful, more widespread devices should be out within 2 years (right around the time Blu-ray COULD be hitting its stride). I'm talking about streaming HD. The benefits? Imagine being able to sit down on your couch and, with access to the entire Netflix or Blockbuster library, pick what movie you want to rent/buy. In less time than it takes to heat up the popcorn, the movie is at your TV and ready to watch. Yes, in HD and with all the control (play/pause/FF/RW/Chapters/Etc) that DVD has spoiled you with. Right now this takes the form of either a TiVo box or AppleTV, however with Blockbuster and Netflix both wanting in on the action, it's likely there will be significantly more options within 2 years.
Essentially, you would be downloading the movie either permenantly (buying), or temporarily (renting) to a hard drive in a box sitting under your TV. The key here is interface. Most consumers don't want to have to operate a computer while watching a movie. They want any computer involved to be as transparent as possible. They want to sit down with a remote, and watch a movie. Period. If the companies involved can grasp this, it will make Blu-ray a moot point as people won't have to go out and buy a physical disc whenever they want to watch a movie.
-edit 3/5/08-
Apply here for a DTV Tuner if you have an old TV AND use an antenna.
-end edit-
Wikipedia on Blu-ray
Wikipedia on HD-TV
Wikipedia on Digital TV
Wednesday, February 20, 2008
Amon at Discovery Building II
Went for a walk with Amon and our wonderful friend Katherine around Silver Spring. Walking by the Discovery building, I wanted to use the great colors of the mural as a backdrop. Amon agreed.
More pictures from the film camera posted on my Flickr account.
More pictures from the film camera posted on my Flickr account.
Thursday, February 14, 2008
Frozen Tree through the Living Room Window this Morning
Wanted to try the Flickr "Blog This" feature out and thought I'd share this photo I took out my window a couple mornings ago when I was getting ready for work.
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