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PDA 04 5/27/03 8:27 AM Page 33
Chapter 4 / Infrared Communications Overview
Optional IrDA Data Protocols
The optional IrDA data protocols include the following:
• Tiny TP provides flow control on IrLMP connections with an
optional segmentation and reassembly service.
• IrCOMM provides COM (serial and parallel) port emulation for
legacy COM applications, printing, and modem devices.
• OBEX™ provides object exchange services similar to hypertext
transfer protocol (HTTP).
• IrDA Lite provides methods of reducing the size of IrDA code,
while maintaining compatibility with full implementations.
• IrTran-P provides image exchange protocol used in digital image
capture devices/cameras.
• IrMC provides specifications on how mobile telephony and com-
munication devices can exchange information. This includes
phone book, calendar, and message data, as well as how call con-
trol and real-time voice are handled (RTCON) via calendar.
• IrLAN describes a protocol used to support IR wireless access to
local area networks.

IrDA Control
IrDA Control is an IR communication standard that allows cordless
peripherals such as keyboards, mice, game pads, joysticks, and point-
ing devices to interact with many types of intelligent host devices.
Host devices include PCs, home appliances, game machines, and tel-
evision/Web set-top boxes. IrDA Control is well suited to deal with
devices that leverage the USB HID class of device controls and home
appliances.
IrDA Control protocols consist of a mandatory set of protocols, including:

• PHY (Physical Layer)
• MAC (Media Access Control)

• LLC (Logical Link Control)

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