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White Paper W950
32 June 2006
Preliminary version - PA4
IrDA
IrDA (Infrared Data Association) 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 can
exchange data.
Object Exchange via infrared (IrObex) supports
transferring objects between compatible phones.
You can use W950 to control electrical devices that
have an infrared port, such as, a television or DVD
player.
USB
W950 is USB 2.0 (Universal Serial Bus) compliant.
The idea of the USB is to allow easy connection of
a mobile phone to a PC. USB is designed to be
“completely Plug and Play”, meaning that devices
will be correctly detected and configured automati
-
cally as soon as they are attached.
USB in a mobile phone means convenient data
transfer between the phone and a PC.
Synchronisation of PIM applications with a PC
using the PC Suite, uses the USB Full Speed mode
at 12 Mb/s.
For transferring large amounts of data, the user can
select USB 2.0 High speed up to 480 Mb/s. This
greatly reduces the time needed to transfer, for
example, a large number of music files.
W950 supports USB charging, however, not in con-
junction with High speed mode.
Data storage
W950 is divided into two parts:
• A phone memory with a phone part, and an
'Organizer' part running Symbian OS. The ‘orga
-
nizer’ part consist of a RAM (Random Access
Memory) that is controlled by the Symbian OS
operating system, and a 128 MB flash memory.
The flash memory is split into 48 MB for operat
-
ing purposes and up to 80 MB for storage of
user data, additional languages and settings
such as the active theme. This part behaves just
like a normal disk drive. The folders can be
viewed and managed from the File manager
application or from a connected PC.
• A 4 GB flash Media memory for user file stor-
age, primarily intended for music files. This
memory behaves like a normal disk drive. It can
be accessed as a USB mass storage device
from a PC, allowing the fast transfer of files.
Flash memory retains data even with no power
applied. Unlike some PDA devices, W950 does not
require a small 'memory backup' battery. Data
stored on W950 is therefore not subject to loss due
to such a battery running down.