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Transcript

  • 1. DOWNLOADING
  • 2. The HistoryWhat We Download
  • 3. The Internet
    The origins of the Internet reach back to research in the 1960s
    It was commissioned by the United States government for military purposes.
    Commercialised in the mid 90’s
  • 4. Mp3
    Created in 1991 and released in 1993.
    Mp3 = MPEG-1 or MPEG-2 Audio Layer 3
    At 128 kbit/s – 11 times smaller than original source.
    Removes High and low frequency sounds undetectable by human hearing.
    Allowed music to be shared.
    Mp3 appeared on internet in 1994.
    Popularity increased with the creation of Winamp
  • 5. Nullsofts’s Winamp
    A Media player
    Created in 1997
    One of the first and most popular Mp3 player.
    Available for free.
    Its popularity, and ease of use aided in the file-sharing of Mp3.
  • 6. Napster
    Created in 1999
    Created by Shawn Fanning while attending Northeastern University in Boston.
    Software allowed music (Mp3) files to be shared between other users.
  • 7. Gnutella
    Gnutella works by having a large circle of users (called nodes),using the gnutella client software.
    On initial startup, the software must find at least one other node.
    When conducting a search, a request is sent to each node , who forwards the request to all its connected nodes, and on and on... (initially) up to 7 times, until the request is found
    If a search request turns up a result, the node that has the result contacts the searcher.
  • 8. BitTorent
    • BitTorrentis one of the most common protocols for transferring large files
    • 9. Created in 2001 by Bram Cohen
    • 10. It works by having the owner of a file, split and send each part of the file to whoever wants it.
    • 11. As the receivers all receive different parts of the file, they in turn share their part of the file to the others
    • 12. This results in higher speed possibilities as the file is then being sent from multiple computers.
  • Napster/Metallica controversy 2000 - 2001
    Metallica Discovers song “I Disappear” available on Napster along with all their songs.
    Legal action was initiated against Napster
    Violated three areas of the law: copyright infringement, unlawful use of digital audio interface device, and the Racketeer Influenced and Corrupt Organizations Act (RICO)
    Napster shuts down July 2001