Dynaverse.net
Off Topic => Engineering => Topic started by: The Bar-Abbas Anomaly on July 21, 2006, 11:09:43 pm
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http://uncyclopedia.org/wiki/IPoL
IPoL: Internet Protocol over Lighthouse
Internet Protocol over Lighthouse was an internet data transmission standard popular in the 1990s. The lighthouse would turn on or off periodically and the condition of the light would be sampled every 5 seconds, indicating a single binary bit. Somewhat counter-productively, if the light was off a 1 was being sent, if it was on, the bit was a 0. An observer would write down the bits in sequence and decode the message by hand. Also counter-productively, IPoL transmitters were often solar-powered, limiting their use to the daytime.
IPoL typically allows for a data rate around 0.2 bits per second and is often praised for its efficient packet acrhitecture. A typical packet consisted of a header, which contained the name, longitude, latitude, local time, color, height of the transmitting lighthouse, and name of the recieving lighthouse, along with a 1-bit payload.
A sample packet is shown below:
Nova_Scotia_Lighthouse 44 -63 08:23:02.00 blue 100m Nova_Scotia_Lighthouse_#2 H
The hexadecimal data:
4E6F76615F53636F7469615F4C69676874686F757365203434202D36332030383A32333A30322E303020626C7565203130306D204E6F76615F53636F7469615F4C69676874686F7573655F2332204800
History
Internet protocol over lighthouse was originally theorized by Al Gore in 1982. This is thought to be the reasoning behind Gore's claim that he invented the internet. Scientists at Nova Scotia and New England were successfully able to implement it after just 5 months of R&D. The first message, sent on a foggy October morning in 1984, consisted of the words "Hello, world!" The message took 11 hours, 8 minutes, 24 seconds to transmit, setting a data rate record which held strong until the 1-baud modem was created later that year.
This technology was popular from 1988 to 1994, and proponents insist it is still the best data transmission standard available to date.
Future
While it is now largely considered a legacy protocol IPoL is still used in several applications, such as routing ships. A small, dedicated fan base has adapted IPoL for public use with the open-source OpenIPoL.
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Hey Bar! I have the perfect mod for it: guys on land can play chess with guys on tugboats or freighters without tying up the radio.
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These guys should have been using that protocol:
This is the transcript of a radio conversation of a US naval ship with Canadian authorities off the coast of Newfoundland in October, 1995. Radio conversation released by the Chief of Naval Operations 10-10-95.
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Americans: Please divert your course 15 degrees to the North to avoid a Collision.
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Canadians: Recommend you divert YOUR course 15 degrees to the South to avoid a collision.
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Americans: This is the Captain of a US Navy ship. I say again, divert YOUR course.
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Canadians: No. I say again, you divert YOUR course.
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Americans: This is the aircraft carrier USS Lincoln, the second largest ship in the United States' Atlantic fleet. We are accompanied by three destroyers, three cruisers and numerous support vessels. I demand that YOU change your course 15 degrees north, that's one five degrees north, or countermeasures will be undertaken to ensure the safety of this ship.
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Canadians: This is a lighthouse. Your call.
:rofl:
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That's actually a made up story =) Funny, but never happened.
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That's actually a made up story =) Funny, but never happened.
Naturally Americans claim that.
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Funny, considering the ship was in the Gulf of arabia at the time.
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Funny, considering the ship was in the Gulf of arabia at the time.
Of course it was.