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Apr 19, 2023 www.fakengineer.com

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BLUETOOTHBLUETOOTH


Definition of BluetoothDefinition of Bluetooth Bluetooth is a low bandwidth Bluetooth is a low bandwidth

wireless networking technology wireless networking technology designed primarily to replace cables designed primarily to replace cables for communication between for communication between personal computing / personal computing / communication devices .communication devices .

It is intended to be used for both It is intended to be used for both voice and data communicationvoice and data communication


Why is it called Bluetooth?Harald Bluetooth was king of Denmark in the late 900s. He managed to unite Denmark and part of Norway into a single kingdom then introduced Christianity into Denmark. He left a large monument, the Jelling rune stone, in memory of his parents. He was killed in 986 during a battle with his son, Svend Forkbeard. Choosing this name for the standard indicates how important companies from the Baltic region (nations including Denmark, Sweden, Norway and Finland) are to the communications industry, even if it says little about the way the technology works.

Apr 19, 2023www.fakengineer.com

BLUETOOTH TECHNOLOGYBLUETOOTH TECHNOLOGY

Bluetooth is a complicated technology internally consists of the following parts

1. Radio2. Link manager3. Base band controller4. L2CAP5. HCI6. API


RadioRadio The bluetooth radio The bluetooth radio

converts the digital converts the digital baseband data to and baseband data to and from a 2.4Ghz analog from a 2.4Ghz analog signal .signal .

It’s range is from 2.4 It’s range is from 2.4 Ghz to 2.483 Ghz .Ghz to 2.483 Ghz .



HCIHCI Host Controller Host Controller

InterfaceInterface It provides a command It provides a command

interface to the interface to the baseband link controller baseband link controller and link manager , and and link manager , and access to hardware access to hardware status and control status and control register .register .



BLUETOOTH TECHNOLOGYBLUETOOTH TECHNOLOGY APIAPI (Application Program (Application Program

interface)interface) These are software modules These are software modules

which connect the host which connect the host application program to the application program to the bluetooth communication bluetooth communication system .system .

As such they reside and As such they reside and execute on the same execute on the same processing resource as the processing resource as the host system applicationhost system application . .


L2CAPL2CAP Logical Link Control And Logical Link Control And

Adaptation protocolAdaptation protocol It manages the high level It manages the high level

aspects of each connection aspects of each connection that is who is connected to that is who is connected to who .who .

Format of data.Format of data. Implemented in softwareImplemented in software..



Link ManagerLink Manager It is responsible for It is responsible for

managing the physical managing the physical details for Bluetooth details for Bluetooth connection .connection .

Creating the link, Creating the link, monitoring their health, monitoring their health, terminating them .terminating them .



BASE BANDBASE BAND The digital engine of a Bluetooth The digital engine of a Bluetooth

system .system . Constructing and decoding.Constructing and decoding. Encoding and managing error Encoding and managing error

correction .correction . Encrypting and decrypting for secure Encrypting and decrypting for secure

communicationcommunication Calculating radio transmission Calculating radio transmission

frequency patternfrequency pattern Maintaining synchronizationMaintaining synchronization Controlling the radioControlling the radio



COMPREHENSIVE BLUETOOTH COMPREHENSIVE BLUETOOTH TUTORIALSTUTORIALS

Bluetooth is Bluetooth is unique wireless unique wireless technology technology intended to realize intended to realize 3 objects3 objects


COMPREHENSIVE BLUETOOTH COMPREHENSIVE BLUETOOTH TUTORIALTUTORIAL

Eliminate the Eliminate the connection of wires connection of wires associated with most associated with most consumer and consumer and computer equipment .computer equipment .

Allow a collection of Allow a collection of products to function as products to function as an intelligent whole .an intelligent whole .

Make a location centric Make a location centric connectivity seamlessconnectivity seamless . .


BLUETOOTH OPERATIONBLUETOOTH OPERATION

The devices can The devices can Bluetooth is a dynamic Bluetooth is a dynamic standard .standard .

automatically find each automatically find each other .other .

Establish connection Establish connection within themselves .within themselves .

And discover what they And discover what they can do for each other .can do for each other .

BLUETOOTH BASICSBLUETOOTH BASICS Bluetooth is a standard developed Bluetooth is a standard developed

by a group of manufacturer that by a group of manufacturer that allows any sort of electronics allows any sort of electronics equipment –equipment –

From computers and cell phones to From computers and cell phones to keyboards and headphones –to keyboards and headphones –to make it’s own connection , without make it’s own connection , without wires .wires .

Here the electronics equipment talk Here the electronics equipment talk to each otherto each other . .


Cordlessly connect your camera to your mobile phone or any wire-bound connection. Add comments with your mobile phone, a notebook or your portable PC and send them instantly to a receiver anywhere in the world. Suitable for professional as well as personal use.


When your portable PC receives an e-mail, you'll get an alert on your mobile phone. You can also browse all incoming e-mails and read those you select in the mobile phone's display.


Automatic synchronization of your desktop, portable PC, notebook (PCPDA) and your mobile phone. For instance, as soon as you enter your office the address list and calendar in your notebook will automatically be updated to agree with the one in your desktop, or vice versa.

(www.bluetooth.com)


VOICE & DATA COMMUNICATIONVOICE & DATA COMMUNICATION

Connect cordless headsets to your portable PC and use the portable PC as a speakerphone regardless of whether you're in your office, in your car or at home.


Jabra Free Speak BT200Jabra Free Speak BT200 JABRA FREE SPEAK is the JABRA FREE SPEAK is the

ultimate hands free and wire-ultimate hands free and wire-free solution that connects free solution that connects your mobile phone to your your mobile phone to your headset via Bluetooth radio headset via Bluetooth radio technology instead of a wire .technology instead of a wire .

Works upto 30 feet away .Works upto 30 feet away . Talk freely across the room .Talk freely across the room .


Cordless connection of your desktop or laptop to printers, scanners and to the LAN. Increase your sense of freedom in everyday work by cordless connection of your mouse and keyboard to your PC.


Bluetooth enables Bluetooth enables sharing of sharing of information ,synchroniinformation ,synchronization of data, access to zation of data, access to the internet and the the internet and the possibility of wireless possibility of wireless application protocol .application protocol .

OTHER BLUETOOTH FEATURES

LOW COSTLOW COST LOW POWER CONSUPTIONLOW POWER CONSUPTION LOW COMPLEXITYLOW COMPLEXITY CAN HANDLE RAPIDLY CHANGING CAN HANDLE RAPIDLY CHANGING

ENVIORNMENTENVIORNMENT CAN DISCOVER SERVICES WITHIN CAN DISCOVER SERVICES WITHIN

RANGESRANGES


Bluetooth ::How it works ?Bluetooth ::How it works ?

Unlike infrared which uses a Unlike infrared which uses a beam of light to transmit data beam of light to transmit data and is found in many remote and is found in many remote controls , wireless keyboards , controls , wireless keyboards , Bluetooth uses a radio frequency Bluetooth uses a radio frequency (2.4 Ghz) to communicate.(2.4 Ghz) to communicate.

The biggest advantage that The biggest advantage that Bluetooth has over IR is that one Bluetooth has over IR is that one device doesn’t need to be in the device doesn’t need to be in the line of sight of the device that it’s line of sight of the device that it’s communicating with ,so it can communicating with ,so it can work through walls and floors .work through walls and floors .


Bluetooth ::How it works ?Bluetooth ::How it works ?

Bluetooth enabled devices can Bluetooth enabled devices can find each other without the find each other without the user’s having to do anything .user’s having to do anything .

When two Bluetooth devices When two Bluetooth devices come within range of each come within range of each other , they immediately begin a other , they immediately begin a series of negotiations to series of negotiations to determine if they have data to determine if they have data to share or need to make a share or need to make a connection , and they form a connection , and they form a small network known as a small network known as a piconet or a personal area piconet or a personal area network (PAN) .network (PAN) .

Bluetooth SIG Bluetooth SIG (Special Interest Group)(Special Interest Group)

In February 1998 ,the Bluetooth SIG was founded In February 1998 ,the Bluetooth SIG was founded by a small core of major companies – IBM, Intel, by a small core of major companies – IBM, Intel, Nokia, Toshiba, and Ericsson – to work together to Nokia, Toshiba, and Ericsson – to work together to develop the technology . develop the technology .

The Bluetooth SIG is a trade association comprised The Bluetooth SIG is a trade association comprised of telecommunication , computing and network of telecommunication , computing and network industry companies that is driving the development industry companies that is driving the development of a low cost short range wireless specification for of a low cost short range wireless specification for connection of mobile products .connection of mobile products .


Bluetooth systemBluetooth system

Currently teletronics and Currently teletronics and it’s strategic partners are it’s strategic partners are jointly developing Home jointly developing Home Appliance Remote Access Appliance Remote Access system which allow remote system which allow remote control of home security control of home security alarms , doors, windows, alarms , doors, windows, refrigerators, washing refrigerators, washing machine, dryer, steam machine, dryer, steam cooker etc .cooker etc .

All these are remotely All these are remotely activated by mobile activated by mobile telephones .telephones .

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