Doyeon Kim

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• By
• Doyeon Kim

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Index

• 1

What is Bluetooth?
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How it works
3
Applications
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Facts
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Future of Bluetooth
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References
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Bluetooth is a wireless technology standard for
connecting devices, set to replace cables.
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• ? The Swedish telecom giant Ericsson originally
  invented and introduced Bluetooth in 1998, but
  now the Bluetooth SIG (Special Interest Group) is
  responsible for encouraging and supporting
  research and development in Bluetooth technology
• ? Its intended basic purpose was to be a wire
  replacement technology in order to rapidly
  transfer voice and data
• ? The word Bluetooth is taken from the 10th
  century Danish King Harald Bluetooth. He had been
  influential in uniting Scandinavian Europe during
  an era when the region was torn apart by wars.
  The founders of the Bluetooth SIG felt the name
  was fitting because

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1) Bluetooth technology was first developed in
Scandinavia, and 2) It is able to unite
differing industries such as the cell phone,
computing, and automotive markets, just like King
Harald united the region. ? It allows any sort
of electronic equipment from computers and cell
phones to keyboards and headphones to make its
own connections, without wires, cables or any
direct action from a user ? Distinctive
advantage for this wireless technology is its low
power consumption, enabling extended operation
for battery powered devices like cell phones,
personal digital assistants, and so on.

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• ? Bluetooth uses a radio link to connect devices
  instead of a cable.
• ? This radio link is radio frequencies in the
  2.45 gigahertz range (which is the same as WiFi,
  cordless phones or various other wireless
  devices) to transmit information over short
  distances of generally 33 feet (10 meters) or
  less. By embedding a Bluetooth chip and receiver
  into products, cables that would normally carry
  the signal can be eliminated
• ? Ex) Sending pictures from a digital camera to
  a laptop PC by using Bluetooth, a wireless
  technology.

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• ? The signal is also capable of passing through
  the walls in your home, making it useful for
  controlling several devices in different rooms.
• ? Data can be transferred at a rate of up to 1
  Megabyte per second (Mbps)
• ? During the process, Bluetooth is able to share
  the same frequency band without experiencing any
  interference because it utilizes various key
  technologies.
• ? One of the ways Bluetooth avoids interference
  is through the use of low power signals (around 1
  milliwatt).

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• ? Devices using the Bluetooth Core Specification
  Version 1.1 or later are able to avoid
  interference with other wireless devices because
  their signal is so weak.
• ? Even though the signal is weaker, it works
  well.
• ? Also, by using a technique known as
  spread-spectrum frequency hopping, Bluetooth
  devices avoid interference with other wireless
  devices

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• ? Wireless headsets
• -You can talk on the phone while in motion
• without the hassle of wires

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• ? Hands-free Car Kits
• - You can use your voice to operate the phone,
  and talk on the phone via the cars built-in
  audio system.

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• ? Keyboards and mice
• -This helps the office desk tidy. Some work with
  smartphones and PDAs
• ? Printing
• -You can print photos or documents directly from
  a digital camera, a camera phone, or a laptop.
  Ideal for busy professionals
• ? File transfer
• -You can transfer photos from a camera phone to
  a computer, install smartphone applications from
  a computer, or exchange documents between laptops
  in a conference room

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• ? Social networking
• -Bluetooth devices can discover and communicate
  with nearby devices, enabling strangers who
  happen to be in the proximity to communicate with
  each other.
• Nearby sensor users can view profiles on
  their smartphones, and if they find an
  interesting profile, they can message that
  person, or simply walk over to strike up a
  conversation.

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• Bluetooth is automatic
• - When two or more Bluetooth devices enter a
  range (up to 30 feet) of one another, they
  automatically begin to communicate without you
  having to do anything.
• 2. Bluetooth consumes low energy
• - Since Bluetooth uses low power signals, it
  requires little energy and will therefore use
  less battery or electrical power
• 3. Bluetooth uses instant PAN (Personal Area
  Network)
• -Up to seven compatible Bluetooth devices can
  connect to one another within a proximity of up
  to 30 feet, forming a PAN or piconet. Multiple
  piconets can be automatically set up for a single
  room

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• 4. Health risks
• -Since Bluetooth radio is extremely low power,
  it pushes less power than a cell phone. But an
  investigation as to the potential health risks is
  an ongoing concern with Bluetooth.
• 5. Compatibility
• -different brands of Bluetooth products are
  compatible. The Bluetooth Logo Certification
  program requires Bluetooth products to
  interoperate with products manufactured by other
  vendors those products that dont interoperate
  will not be allowed to use the Bluetooth logo.

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• ? Bluetooth SIG has been given the task of
  working on the new Bluetooth version, which
  offers several new advantages. The Bluetooth
  standard is totally upgradeable.
• (cf. Newer versions of Bluetooth can have a range
  over 100 feet)
• ? Market research studies at several leading
  companies involved with Bluetooth technology
  expect a total of 250 million Bluetooth-enabled
  devices.
• ? More practical and feasible ideas of using
  Bluetooth technology will be constantly emerging,
  and the number of consumers will continue to
  increase.

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reReferences

• http//www.palowireless.com/infotooth/whatis.asp
• http//www.macdevcenter.com/pub/a/mac/2005/11/18/w
  hat-is-bluetooth.html
• http//www.bluetomorrow.com/content/section/11/38/
  
• http//archive.devx.com/wireless/articles/Bluetoot
  h/BtoothFAQ.asp
• http//www.mobileinfo.com/Bluetooth/FAQ.htm
• http//www.broadcom.com/products/bluetooth_faq.php
  

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