IrSimple enables rapid data transmission. The numbers of mobile phone and digital camera models equipped with IrSimple are continually increasing, making high-speed data transmission possible.
IrDA Communication Summary
A summary of standards for IrDA communication is defined in the "IrPHY" (IrDA Physical Layer Specification).
* Optical wireless communication using infrared light with a wavelength between 850 and 900nm
* Communication
distance |
Low Power 20cm
Standard 100cm |
* Communication
speed |
SIR : 2.4k, 9.6k, 19.2k, 38.4k, 57.6k, 115.2kbps
MIR : 0.576, 1.152Mbps
FIR : 4Mbps
VFIR : 16Mbps
UFIR : 100Mbps (Standards under formulation) |
* Communication
method |
Half -duplex
Modulation method
SIR,MIR(<1.152Mbps) RZI Modulation
FIR(4Mbps) 4PPM Modulation
VFIR(16Mbps) HHH(1,13)CODE |
Although various standards and products currently exist that enable wireless communication, IrDA, using infrared light, is integrated in a wide variety of products and possesses a number of advantages.
Features of infrared light
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Infrared light can be widely used for data communication in a number of applications, such remote controls.
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Because light is used for communication, there are no applicable legal regulations enacted, such as the Radio Law. It is therefore expected to become a common worldwide communication standard used for high-speed data transmission.
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Of course, you can also use it in the public places such as hospitals
and airplanes.The IrDA standard specifies a communication distance of within 1m and 30º, making transmission across long distances or angles of 60º or greater impossible. These physical limitations provide a greater level of security than either encryption or encoding methods. |
Originally, IrDA was used to facilitate communications between the PC and other equipment.
Today, IrDA is seeing widespread use in mobile phones in order to provide greater multifunctionality.
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| Actual examples of use: |
・Exchanging e-mail between a notebook computer and a PDA(Personal Digital Assistant).
・Exchange e-mail between mobile phones.
・Transmitting images for a mobile phone to a printer.
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| Other applications are currently under development, including the following: |
・Transmitting programs from a handy terminal to production facilities in a factory.
・Wirelessly setting the car TAG security or office entrance system code.
・Making a cashless payment at a vending machine or restaurant using infrared signals form a mobile phone.
・Wirelessly transmitting blood pressure or other physical conditions measured at home to a host PC for diagnosisi by a hospital physician.
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In addition to mobile phones and personal computers, IrDA adds infrared communication capability and unprecedented functionality to virtually any set.
3.5MB)
Uses