Saturday, November 30, 2013
Thursday, November 28, 2013
Monday, November 25, 2013
Sunday, November 24, 2013
Friday, November 22, 2013
Thursday, November 21, 2013
From: TokBox Inc. <email@example.com>
Date: Thu, Nov 21, 2013 at 11:34 AM
Subject: Exciting OpenTok platform advancements
115 Stillman Ave, San Francisco, CA 94107
|Business: firstname.lastname@example.org||Support: tokbox.com/opentok/support||Feedback: OpenTok Survey|
Wednesday, November 20, 2013
an excellent essay by Deirdre Moen, wife of an excellent friend.
Deirdre is very nice person too.
(Same article in different places, each with a comment thread.)
Tuesday, November 19, 2013
Date: November 19, 2013, 10:05:13 AM PST
Subject: VITEC's HDM850+ for HEVC decoding over SDI HDMI - Available Now
Decode and display HEVC clips or stream over SDI/HDMI
To view this email as a web page, go here.
HEVC codec is on its way, be ready! Today, with the Stradis HDM850+ decoder board, it is possible to decode and display HEVC / H.265 clips or stream over SDI / HDMI.
HDM850+ is fully featured for professional broadcast applications such as content distribution, station/news automation, and quality control or simply for rendering/testing the latest video standards. Featuring unique frame accurate playback and compatible with HEVC, H.264 and MPEG-2 video standards (up to 4:2:2, 10 bits), HDM850+ is the most advanced and versatile decoder card available on the market.
HDM850+ is a PCIe based decoder for use by end users as well as integrators (SDK available). It decodes and displays video up to 1080p60 over 3G-SDI or HDMI in a standard PC platform.
Highlights of the HDM850+ broadcast decoder card
- 3G-SDI and HDMI outputs up to 1080p60
- HD/SD HEVC decode (compliant to HM reference decoder)
- HD/SD H.264 & MPEG-2 - 4:2:2 & 4:2:0
- Unique seamless frame accurate playback
- Hardware scaler from any to any resolution
- Genlock Input, RS-422 control, Full frame OSD
- Powerful end user application
- Livewire & Stradis SDK for integrators
- PCIe (4 lanes), multiboard support
Shipping Now - HDM850+ and HDM850 firmware upgrade are available now through the VITEC worldwide dealer network.
For more information on the Stradis HDM850+ or other VITEC products, visit www.vitecmm.com.
This email was sent by: VITEC
931 Benecia Avenue Sunnyvale, CA 94085 United States
Monday, November 18, 2013
Bjork Explaining Television Is Everything You'd Imagine Bjork Explaining Television to Be
An overview of the IEEE 802.11af or White-Fi proposal for Wi-Fi using the TV White spaces using cognitive radio technology.
Benefits of IEEE 802.11af, White-Fi
- Propagation characteristics: In view of the fact that the 802.11af white-fi system operating the TV white spaces would use frequencies below 1 GHz, this would allow for greater distances to be achieved. Current Wi-Fi systems use frequencies in the ISM bands - the lowest band is 2.4 GHz and here signals are easily absorbed.
- Additional bandwidth: One of the advantages of using TV white space is that additional otherwise unused frequencies can be accessed. However, it will be necessary to aggregate several TV channels to provide the bandwidths that Wi-Fi uses on 2.4 and 5.6 GHz, to achieve the required data throughput rates. It is possible that vacant channels in any given area will vary widely in frequency and this presents some challenges in managing the data sharing across the different channels, although this has been successfully achieved in technologies such as LTE.
IEEE 802.1af white-fi technologies
- Cognitive radio: One way in which a white-fi system would be able to operate is to use cognitive radio technology;
Using this technology, it will be possible for the white-fi, IEEE 802.11af system to detect transmissions and move to alternative channels.
- Geographic sensing: Another method that is favoured by many is geographic sensing. Although details are not fully defined, having a geographic database and a knowledge of what channels are available there is another way of allowing the system to avoid used channels.
|Operating frequency range||470 - 710MHz|
Sunday, November 17, 2013
Saturday, November 16, 2013
Friday, November 15, 2013
Monday, November 11, 2013
Mobile networks in Africa: Video accounts for less than 6% of traffic, but is expected to grow faster than in any other region - Report Blackberry email and BBM messaging accounts for over 13% of traffic across Africa - HispanicBusiness.com
Sunday, November 10, 2013
Saturday, November 09, 2013
Wednesday, November 06, 2013
Tuesday, November 05, 2013
Monday, November 04, 2013
Sunday, November 03, 2013
Saturday, November 02, 2013
Friday, November 01, 2013
This demonstration is 100% real. It's relatively simple to create your own.
Check out some extra footage here:
This video shows you how to create a secret LCD monitor.
From YouTube description:
The results are amazing. If you are going to try and make your own, there are a few things to keep in mind. First, I would recommed using a monitor that you don't care about. I bought mine from a pawn shop for $20 dollars. Once you remove the polarized layer, you've pretty much made the monitor useless as to normal use. If you are good with repairs and that sort of thing, I'm sure you could buy a replacement filter to fix the monitor. So basically, just make sure you are ok with modifying whatever monitor you've chosen to use for this project. Once you have your monitor you need to remove the top layer, which is the polarized layer. It helps to remove the plastic frame from the front but it's not 100% necessary. Once you remove the plastic front, use a hobby knife to cut on the edge around the whole monitor. Press hard enough to make the cut but don't press too hard. That's once thing to keep in mind during this whole process is that you can completely destroy the monitor by damaging the actual LCD part of the screen. Once you make the 4 cuts, then pick a corner to start peeling the polarized layer. I used a hobby knife to "dig" under the layer so I could get a big enough piece to grab onto. Now, every monitor is different so you may experience this part a little different than the next person. You want to peel slowly to try and get the biggest pieces possible and also not to put too much force on the screen. This part could take several minutes to get all of the polarized layer off. Most LCD monitors have an antiglare layer "attached" to the polarized layer and both of those layers are glued so the hard surface of the LCD. So you may see these extra layers as you are removing them. If you're lucky you will be able to remove all 3 layers by just pulling it off. But it's likely that some glue will be left over. It's also possible that you will lift the polarized and antiglare layer but leave most of the glue. If you look closely in my video, you can see a few spots where the contrast is different. These are spots where the glue came off. If there are a lot of glue spots and it bothers you, it is possible to remove the glue by using paint thinner. But you have to be very careful. If you use the paint thinner, apply it to the glue spots and use a piece of plastic to gently scrape it off. Don't press too hard or you will destroy the monitor. Overall, I would recommend to stay away from the paint thinner and just live with the glue spots.
Next you want to grab some glasses. I used a pair of the 3D glasses you get at the cinema. I never throw them in the recycle bin :). Anyway, you can open these glasses up and remove the "lenses".
I ordered 2 - 6" X 6" sheets of polarized filters from a popular online science store. I traced the shape of the area where the lenses on the polarized sheets. I cut them out and placed them inside the frames. Before you cut the shape, make sure to note the proper angle of the polarized sheet with the monitor. I had to turn my sheet 45 degrees to get the correct angle. So when I traced the lens shape on the sheet, I turned the sheet 45 degrees and cut them. (In the video the sheet wasnt turned 45 degrees, but that was just a video mistake)
So now you're ready for action. If you hook your monitor up to a computer and put on your glasses you should be able to see the screen just as normal. Anyone standing behind you will only be able to see a blank monitor. If you move far to the sides you can see a little bit of a negative image on the screen, but it's still very hard to make out.