What are the differences between bluetooth and infrared?

Question

pros and cons, speed, ease of use, security.

Answer 1

(m)



Infrared technology is what most TV remotes use. The distance an infrared signal can travel varies based on the strength of the remote, but is usually less than 50 feet for household electronics. In order for an infrared signal to be detected, there must be a direct line of sight between the transmitter (remote) and the receiver (TV). If there is a wall or large object between them, the signal will not pass through it.



Bluetooth, on the other hand, uses a radio frequency, which allows transmission through walls and other objects. The standard range of a Class 3 Bluetooth device is about 30 ft., which makes it ideal for syncing PDAs with computers, using wireless cell phone headsets, and enabling handsfree cell phone use inside Bluetooth-enabled automobiles. Because Bluetooth technology is based on a standard 2.4 GHz frequency, different Bluetooth devices can typically communicate with each other, regardless of the manufacturer. Most infrared devices only work with proprietary equipment.



While Bluetooth is well on its way to replacing infrared in many different areas, the technology is not meant to be used for wireless networking. Instead, Wi-Fi technology, which has a larger range and higher bandwidth than Bluetooth, is the standard that most wireless networking equipment uses.

Answer 2

Infrared technology is what most TV remotes use. The distance an infrared signal can travel varies based on the strength of the remote, but is usually less than 50 feet for household electronics. In order for an infrared signal to be detected, there must be a direct line of sight between the transmitter (remote) and the receiver (TV). If there is a wall or large object between them, the signal will not pass through it.



Bluetooth, on the other hand, uses a radio frequency, which allows transmission through walls and other objects. The standard range of a Class 3 Bluetooth device is about 30 ft., which makes it ideal for syncing PDAs with computers, using wireless cell phone headsets, and enabling handsfree cell phone use inside Bluetooth-enabled automobiles. Because Bluetooth technology is based on a standard 2.4 GHz frequency, different Bluetooth devices can typically communicate with each other, regardless of the manufacturer. Most infrared devices only work with proprietary equipment.



While Bluetooth is well on its way to replacing infrared in many different areas, the technology is not meant to be used for wireless networking. Instead, Wi-Fi technology, which has a larger range and higher bandwidth than Bluetooth, is the standard that most wireless networking equipment uses.

Answer 3

Bluetooth is an industrial specification for wireless personal area networks (PANs), also known as IEEE 802.15.1. Bluetooth provides a way to connect and exchange information between devices like personal digital assistants (PDAs), mobile phones, laptops, PCs, printers, digital cameras and video game consoles via a secure, globally unlicensed short-range radio frequency.Bluetooth uses the SAFER+ algorithm for authentication and key generation. The E0 stream cipher is used for encrypting packets. This makes eavesdropping on Bluetooth-enabled devices more difficult.



IR data transmission is also employed in short-range communication among computer peripherals and personal digital assistants. These devices usually conform to standards published by IrDA, the Infrared Data Association. Remote controls and IrDA devices use infrared light-emitting diodes (LEDs) to emit infrared radiation which is focused by a plastic lens into a narrow beam. The beam is modulated, i.e. switched on and off, to encode the data. The receiver uses a silicon photodiode to convert the infrared radiation to an electric current. It responds only to the rapidly pulsing signal created by the transmitter, and filters out slowly changing infrared radiation from ambient light. Infrared communications are useful for indoor use in areas of high population density. IR does not penetrate walls and so does not interfere with other devices in adjoining rooms. Infrared is the most common way for remote controls to command appliances.



Last Word -- Bluetooth >>>>>> Infrared ... Njoy

Answer 4

Bluetooth is a technologies offering instantaneous own section networks (WPANs) for small gadgets as cellular telephones or PDAs. It operates on the unlicensed 2.4-GHz business-scientific-scientific (ISM) band, and has surely been common via Ericsson. The Bluetooth particular activity group (SIG) became then based with its unique promoters being Nokia, IBM, Intel, and Toshiba. on the instant, approximately 2000 contributors are counted, among them Agere, 3Com, Lucent, and Microsoft. The call "Bluetooth" became chosen of the Denish King Harald Bluetooth. The complementary of Bluetooth is the Infrared device of the Infrared archives association (IrDA). in the process the previous couple of months, it is been argued that Bluetooth has been created instead for Infrared. nevertheless, it quite is not particularly real: Bluetooth has been invented as an enhancement of Infrared, particularly in terms of low value, small quantity, low skill, and the accomplishment of Infrared's obstacles, such because of the fact the its unidirectional connections, the connectivity selection of purely meter or its obstacle to point-to-component connections. notwithstanding Bluetooth has easily coped with those constraints, e.g. via omnidirectional connections, the connectivity selection of as much as ten meters, or its skill for component-to-multipoint connections, the two technologies are particularly complementary. mutually as Bluetooth is rather applicative for networking, Infrared is extra perfect for the direct connections, e.g. for replacing corporation enjoying cards.

Answer 5

bluetooth works in radio waves

infrared works in infrared waves( lightspectrum invisible to human eye)

speed depends on the proximity of the devices.

it seems that bluetooth is faster.

both are easy to use.

security depends upon the user (don't enable it until you need it)

infrared device should be alined straight and device has to be close.

where as bluetooth has more range.but the rate of data transfer gets slower as you move away from the device.

Answer 6

Bluetooth is the technology, Infrared is the way it is transmitted.



It's kinda like a TV remote.