Sony Ericsson T300 manual Infrared transceiver, Connection via infrared

Infrared transceiver

Infrared communication creates a data link between two communications devices through an infrared beam of light. On the T300/T302, this link is used to connect with desktop computers, PDAs, Sony Ericsson handheld computers, laptop PCs, other phones (for example, the T39), and other hardware supporting the standard. The Infrared Data Association (IrDA) has set the hardware and software standards that form the infrared communication links. The T300/T302 complies with the IrMC 1.1 specification, which defines how mobile telephony and communication devices can exchange information. Key benefits of using the T300/T302 with its built-in infrared transceiver:

•True wireless communication

•Low power consumption

•Secure data transmission with the IrDA DATA standard

•Ability to send and receive e-mail and data on the connected PC/PDA

•Ability to connect to the Internet or intra- net/LAN from the connected PC/PDA

•Ability to manage the phone book from a

PC

•Exchange of business cards with vCard compatible devices

•Exchange of ring signals between compati- ble phones

•Ability to attach a photo from a digital cam- era in outgoing e-mail

T300/T302

White Paper, August 2002

Connection via infrared

IrDA is a point-to-point communication link between two infrared ports. The infrared beam has to be directed towards the target infrared port and as long as the two infrared ports are within sight and range, the devices exchange data. For optimal performance, place the T300/T302 within a metre and at an angle of 30 degrees to the infrared port on the PC/PDA, or other phone. An advantage of the necessary proximity of devices is reduced risk of transmitting data to other nearby devices. An infrared link is a serial connection, which means that data bits are sent one after another in a long stream. The IrDA—SIR Data Link Standard is a protocol that makes transmission of data faultless. The standard provides a high level of noise immunity, which means that the connection is not affected by fluorescent light, sunlight and electromagnetic fields — making it suitable for the modern office environment.

25