bluetooth power point

8/3/2019 Bluetooth Power Point

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BLUETOOTHTECHNOLOGY

PRESENTED BY

DEEPA PN ARCHANA


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Contents

1. Introduction2. Description3. Bluetooth Basics

4. Bluetooth Software5. Bluetooth Operations6. Bluetooth Keyboard7. Advantages

8. Disadvantages


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1. Introduction Bluetooth-Originally

started by Ericssoncompany.

It is named for Harald

Blaatand. Bluetooth-Wireless and

Automatic technologysimplifying art ofcommunication.

Frequency used is 2.45GHz, same used in ISMdevices.


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2. Description

Bluetooth-Wireless technology providinglink between mobile and electronicdevices.

It operates on 2.45 GHz radio signalsusing frequency hopping spread spectrum.

Technology of Bluetooth concentrates onshort range of communication.


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Applications

Laptops

PDAs

Headphones Wireless printer

adapter

Onboard Bluetooth

adapter.


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3. Bluetooth basics

Bluetooth is low powered and low cost.

All the devices follow a uniform structure

Devices Connect through network calledPico nets.

Strength lies in handling data and video

transmission simultaneously.


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Bluetooth Basics

Specification- Bluetooth specification givesdevelopers data link and application layerdefinitions

Spectrum-Bluetooth operates between 2.4and 2.485 GHz using a frequency hoppingspread spectrum.

Interference- is reduced using AdaptiveFrequency Hopping allowing a betterefficiency and greater performance.


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4. Bluetooth software

Bluesoleil can be installed onpersonal computer or onpersonal digital assistant also

On a PC, it provides a lot of

Extra wireless features. It also has a graphical user

interface (GUI).

On a PDA, provides basicBluetooth profiles such as

headset and hands free profile,personal networking (PAN)profile


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Bluetooth Software

Bluetooth software can be installed andused on Bluetooth capable devices.

There exists different software for differentdevices like PDA , personal computer.

Enables the device to use technology at itsfullest.

Best example is Bluesoleil.


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5.How Bluetooth works

?They normally operate at 2.45GHZ in licensefree globally available ISM radio band.

Advantage-worldwide availability andcompatibility.

Disadvantage- devices must share the bandwith other RF emitters including automobilesecurity systems, noise sources such as

Microwaves

Solution- Frequency Hopping SpreadSpectrum.


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Frequency Hopping SpreadSpectrum (FHSS)

Frequency hopping is jumping from onefrequency to another within the ISM radioband.

Efficient use of entire bandwidth.

Low Interference

Provides basic level of security.


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Working of FHSS

There exists a master-slave relation betweendevices.

A device in master mode can communicate withupto seven slave devices.

Bluetooth devices work in a short range to

conserve the battery power.


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Technical operations

High speed, low powered wireless technology.

Circuits are Contained on a 0.9 cm square.

This offers 1MB link with security.

Each device offers unique 48 bit address fromIEEE 802.15 standard.

Authentification is via a 128 bit key.

Supports up to 721KBps along with 3 voice

channels.


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6. Bluetooth Keyboard

Bluetooth keyboard is one of major applications ofBluetooth technology.

It was first developed by Microsoft in 2002.

Today most of companies offer this type ofkeyboard, some of which companies include Dell,Apple..

A Bluetooth keyboard and mouse combination will

allow the user to work at distances of up to 30 feet. There are mainly two types in this-wireless

keyboard and virtual keyboard.


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Wireless and Virtual keyboard

Wireless keyboard, calledOptical Desktop Eliteofferedby Microsoft work with 2.4 GHzBluetooth technology.

Apple wireless keyboard is a

sleek and compact design andmakes a secure, reliableconnection with Mac.

Foldable types are anothertype of Bluetooth keyboards.

It ranges in full size keyboardto mini keyboard.


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Virtual keyboard

Virtual keyboard is projectedon a flat, non reflective surfaceand keystrokes areaccompanied by key clickingsounds that are simulated.

The keyboard has 63 keys andit measures only 295*95 mmwith a height of 3.5 inches.

Keyboard works by producinga red diode laser light whenkeyboard is projected onsurface.


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7. Advantages

Wireless

Inexpensive

Automatic

Interoperability Low interference and energy consumption.

Share voice and data

Instant PAN

Upgradeable

Long lasting technology.


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8. Disadvantages

Data rate and security.

More susceptible to Interception andattack.

Less range.


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Thank You

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