Presentation:Irda & BlueTooth Mikhail Sabyanin

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Bluetooth and IrDA Both IrDA and Bluetooth technologies compete with each other, each have their own advantages and disadvantages as well. IrDA is a point-to-point (points being in the line of sight), narrow angle (300 cone), ad-hoc data transmission standard designed to operate in a range of 0 to 1 meter and at speeds of 9600 bps to 16 Mbps. IrDA is widely available on laptop computers, peripherals etc. with about 50 million units already installed worldwide. Bluetooth however is a Radio Frequency (RF) point-to-multipoint voice and data transfer protocol with a link range of 10 cm to 100 m and data transfer rate of 721 Kbps. Security features are built-in the Bluetooth specification while IrDA has no options for link level security implementations.

What Is Infrared? Infrared is an energy similar to visible light, but with a longer wavelength. Infrared energy is invisible to the human eye, however, while visible light energy is emitted by objects only at a very high temperature, infrared energy is emitted by all objects at ordinary temperatures. Infrared is an energy similar to visible light, but with a longer wavelength. Infrared energy is invisible to the human eye, however, while visible light energy is emitted by objects only at a very high temperature, infrared energy is emitted by all objects at ordinary temperatures.

INFRARED CONECTION

Data Exchange In a common data exchange scenario two people meet to exchange business cards, face to face, in a large conference room or convention center. Many other people with wireless devices are also attempting to do the same thing. In such a situation IrDA excels because of its narrow angle, clear sight point-and-shoot type of implementation while the Bluetooth device with its omni- directional characteristics has problems pin pointing the intended target. However, in data exchange situations where there is no line-of-sight between devices, and/or where one device is mobile, Bluetooth is the obvious choice within the piconet.

IrDA and Bluetooth technologies provide complementary implementations for data exchange. For some devices, having both Bluetooth and IrDA will provide the best short- range wireless solution. For other devices, the choice of adding Bluetooth or IrDA will be based on the applications and intended usage models. IrDa

Near infrared waves are not hot at all - in fact you cannot even feel them. These shorter wavelengths are the ones used by your TV's remote control. Irda

The image at the left,shows a cat in the infrared. The orange areas are the warmest and the white-blue areas are the coldest. This image gives us a different view of a familiar animal as well as information thatwe could not get from a visible light picture. The image at the left,shows a cat in the infrared. The orange areas are the warmest and the white-blue areas are the coldest. This image gives us a different view of a familiar animal as well as information that we could not get from a visible light picture.

What is Infrared Radiation? The light we see with our eyes is really a very small portion of what is called the "Electromagnetic Spectrum." The Electromagnetic Spectrum includes all types of radiation - from the X-rays used at hospitals, to radio waves used for communication, and even the microwaves you cook food with. The light we see with our eyes is really a very small portion of what is called the "Electromagnetic Spectrum." The Electromagnetic Spectrum includes all types of radiation - from the X-rays used at hospitals, to radio waves used for communication, and even the microwaves you cook food with. Radiation in the Electromagnetic Spectrum is often categorized by wavelength. Short wavelength radiation is of the highest energy and can be very dangerous - Gamma, X-rays and ultraviolet are examples of short wavelength radiation. Longer wavelength radiation is of lower energy and is usually less harmful - examples include radio, microwaves and infrared. A rainbow shows the optical (visible) part of the Electromagnetic Spectrum and infrared (if you could see it) would be located just beyond the red side of the rainbow. Radiation in the Electromagnetic Spectrum is often categorized by wavelength. Short wavelength radiation is of the highest energy and can be very dangerous - Gamma, X-rays and ultraviolet are examples of short wavelength radiation. Longer wavelength radiation is of lower energy and is usually less harmful - examples include radio, microwaves and infrared. A rainbow shows the optical (visible) part of the Electromagnetic Spectrum and infrared (if you could see it) would be located just beyond the red side of the rainbow.

Why study Infrared Radiation from space? Astronomers have found that infrared radiation is especially useful when trying to probe areas of our universe that are surrounded by clouds of gas and dust. Because of infrared's longer wavelength, it can pass right through these clouds and reveal details invisible by observing other types of radiation. Especially interesting are areas were stars and planets are forming and the cores of galaxies where it is believed huge black holes might reside. Astronomers have found that infrared radiation is especially useful when trying to probe areas of our universe that are surrounded by clouds of gas and dust. Because of infrared's longer wavelength, it can pass right through these clouds and reveal details invisible by observing other types of radiation. Especially interesting are areas were stars and planets are forming and the cores of galaxies where it is believed huge black holes might reside.

About Bluetooth Bluetooth is an industry-standard protocol that enables wireless connectivity for a multitude of devices, including computers, printers, mobile phones, and handheld devices.

Bluetooth isnt only for cell phone headsets. There are Bluetooth audio headphones, keyboards, mice, printers, GPS navigation devices and much more.

ThinkOutside Stowaway Bluetooth Keyboard:

What is Bluetooth? Bluetooth is the name for a short-range radio frequency (RF) technology that operates at 2.4 GHz and is capable of transmitting voice and data. The effective range of Bluetooth devices is 32 feet (10 meters). Bluetooth transfers data at the rate of 1 Mbps, which is from three to eight times the average speed of parallel and serial ports, respectively.

Why is the technology called Bluetooth? The heart of the Bluetooth brand identity is the name, which refers to the Danish king Harald "Bluetooth" Blaatand who unified Denmark and Norway. In the beginning of the Bluetooth wireless technology era, Bluetooth was aimed at unifying the telecom and computing industries.

How is Bluetooth used? Bluetooth can be used to wirelessly synchronize and transfer data among devices. Bluetooth can be thought of as a cable replacement technology. Typical uses include automatically synchronizing contact and calendar information among desktop, notebook and palmtop computers without connecting cables. Bluetooth can also be used to access a network or the Internet with a notebook computer by connecting wirelessly to a cellular phone.

What is the future direction of the Bluetooth standard? At this time, we anticipate the Bluetooth SIG to evolve the Bluetooth technology to provide greater bandwidth and distances, thus increasing the potential platforms and applications used in the emerging personal area networking marketplace

What is the range of Bluetooth transmitter/receivers? Bluetooth is designed for very low power use, and the transmission range will only be 10m, about 30ft. High-powered Bluetooth devices will enable ranges up to 100m (300ft). Considering the design philosophy behind Bluetooth, even the 10m range is adequate for the purposes Bluetooth is intended for. Later versions of the Bluetooth spec may allow longer ranges.