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In thinking about wiring the One Laptop per Child countries for video-capable handheld devices, as a kind of humanitarian project (handheld devices are much more in use in the developing countries than are laptops) to make World University and School Wiki and related video-communication learning and teaching possible, here are a list of bandwidth speeds from Wikipedia.
Internet connection bandwidths
Below is a table showing the maximum bandwidth of common connection types to the internet. For a more detailed list see List of device bandwidths.
56 kbit/s | Modem / Dialup |
1.5 Mbit/s | ADSL Lite |
1.544 Mbit/s | T1 |
10 Mbit/s | Ethernet |
11 Mbit/s | Wireless 802.11b |
44.736 Mbit/s | T3 |
54 Mbit/s | Wireless-G 802.11g |
100 Mbit/s | Fast Ethernet |
155 Mbit/s | OC3 |
300 Mbit/s | Wireless-N 802.11n |
622 Mbit/s | OC12 |
1000 Mbit/s | Gigabit Ethernet |
2.5 Gbit/s | OC48 |
9.6 Gbit/s | OC192 |
10 Gbit/s | 10 Gigabit Ethernet |
http://en.wikipedia.org/wiki/Bandwidth_(computing)
And here's the last table in a list of device bandwidths (from Wikipedia):
[edit] Digital Video InterconnectsSpeeds given are from the video source (e.g. video card) to receiving device (e.g. monitor) only. Out of band and reverse signaling channels are not included. | ||
DisplayPort 1 pair[41] | 2.7 Gbit/s | 0.3375 GB/s |
LVDS Display Interface[42] | 2.8 Gbit/s | 0.35 GB/s |
Serial Digital Interface | 2.97 Gbit/s | 0.37125 GB/s |
Single link DVI | 3.96 Gbit/s | 0.495 GB/s |
HDMI v1.0[43] | 4.9 Gbit/s | 0.6125 GB/s |
DisplayPort 2 pairs[41] | 5.4 Gbit/s | 0.675 GB/s |
Dual link DVI | 7.92 Gbit/s | 0.99 GB/s |
HDMI v1.3[44] | 10.2 Gbit/s | 1.275 GB/s |
DisplayPort 4 pairs[41] | 10.8 Gbit/s | 1.35 GB/s |
HDMI Type B | 20.4 Gbit/s | 2.55 GB/s |
Might we do this through Bug Labs ~ buglabs.net ~ and open source hardware?
And start by making this available to disadvantaged groups in Birmingham, Alabama, vis-a-vis One Laptop Per Child?
[The text in this first section is from my first blog entry from March 16, 2009, which is long, and didn't stream to Google Reader - scott-macleod.blogspot.com/2009/03/internetity-bandwidth-world-university.html].
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Here's the patent for a hand held device capable of communicating audio and video data, which I found on the web:
(US Patent D581429 - Hand held device capable of communicating audio and video data)
http://www.patentstorm.us/patents/D581429/fulltext.html***
How long until we have video-capable handheld devices? And how long until they are available in the developing world? Will a company like DoCoMo, or Apple, make them? Or will it emerge as open source hardware?
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World University and School is ahead. How to prioritize the WUaS foundation, so it generates income, and it grows?
How to focus the project? Patiently, and by keeping the project broad.
And how to invite people to wiki - to contribute to and participate - in this group knowledge generating process? Let people know about it.
I continue to develop WUaS, adding Stanford Professor Leonard Susskind's 'Quantum Physics' course today, for example, as well as adding a 'subject' template in which to add courses and URLs (uniform resource locators - web addresses). I'm ready to move the current WUaS into a database, probably into a semantic Wiki, for which I'll need to collaborate.
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