ITX E-Globaledge Corporation, NTT DoCoMo, Inc., Sharp Corporation and Waseda University have jointly developed IrSimple, a high-speed wireless communications protocol using infrared.
IrSimple refers to simple communications using a high-speed
infrared-based wireless communications protocol.
IrDA (Infrared Data Association), an industry organization that
develops and standardizes specifications for infrared communications,
has decided to formally adopt the protocol as its standard.
IrSimple achieves faster data transmission speeds (at least 4 to 10
times faster than at present) by improving the efficiency of the
current infrared IrDA protocol embedded in many mobile devices such
as mobile phones. In addition, the IrSimple protocol also maintains
backward compatibility with the existing IrDA protocols.
Incorporating IrSimple in digital consumer electronics devices and
home appliances is expected to lead to a significant expansion in
applications for this new communications protocol. For example,
high-resolution photographs taken with a mobile phone or digital
camera can be instantly transferred to a flat-panel TV or printer
through a simple operation, similar to that of using a remote control
Main Features of IrSimple:
- Faster data transmission speeds (at least 4 to 10 times faster than
- Improved efficiency of the protocol by reducing latency until a
receiver/transmitter pair is ready to communicate
- Implementing IrSimple can be done by adding and/or upgrading
software for existing IrDA protocols
- Backward compatiblity with existing IrDA-enabled communications
incorporated into devices or equipment
Below you can see a comparison of the currently available IrDA
protocols with IrSimple. The transfer times where measured when
transferring a 2-megapixel image (approximately 500K bytes).
IrSimple - 4M protocol
--- Approx. 1 second
IrDA - 4M protocol
--- Approx. 1 to 11 seconds
IrDA - 115K protocol
--- Approx. 50 to 100 seconds
Note that both IrSimple 4M and IrDA 4M protocols use the FIR (Fast
IrDA) specification for the speed of the physical layer (up to 4
Also the IrDA 115K protocol uses the SIR (Serial Infrared)
specification for the speed of the physical layer (up to 115.2 kbps),
which is currently incorporated in many mobile phones.