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White Paper T310/T312
6 January 2003
Early Ericsson mobile phones supported a
proprietary non-polyphonic format called eMelody.
Due to the musical limitations of eMelody, and as it
became popular to create, send and download ring
melodies, Ericsson and Sony Ericsson, together
with other manufacturers created the more
advanced non-polyphonic sound format - iMelody.
The development from the iMelody format to the
MIDI format means a revolution to the sound
quality. The MIDI files are small, and perfect for
mobile devices, which has limited storage capacity.
MIDI - Musical Instrument Digital Interface - is a
specification for a communications protocol
principally used to control electronic musical
instruments. MIDI is today a well known standard
used by musicians, composers, arrangers and so
forth.
A MIDI signal or file does not contain any music. It
contains text information as binary data about
what, when and how an instrument/melody is
played. When this data reaches a synthesizer, the
synthesizer translates it into music from the
following attributes:
• What instrument is to be selected and played by
the synthesizer.
• How a melody is played.
• When connected to an amplifier with speakers,
the sound becomes audible.
Please visit www.midi.org for more information.
Imaging
With a digital camera attached to your T310/T312,
you can take, view, store and send high-quality
pictures over the air to another mobile phone, as
MMS messages, or you can send them to an e-mail
address or Web photo album. Downloading images
from the Web is another alternative. Thousands of
on-line image collections already exist on the Web
and many sites are already gearing up to include
images for use in mobile phones.
There are various ways to incorporate images and
other multimedia into your communication. You can
attach pictures to people listed in your phone book
and have pictures or icons of the caller identifying
them in your display.
The pictures are stored in the picture browser in the
phone. From here, the user can select view,
thumbnail or full view, as well as keep track of the
number and size of the pictures stored in the
phone.
Digital Rights Managements
Digital Rights Management (DRM) is a technology
that enables secure distribution, promotion and
sale of Digital Media.
T310 includes implementation of EMS ODI (Object
distribution Indicator) and MMS limited forwarding
(Sony Ericsson proprietary forward lock for MMS
content).
When downloading via WAP, the T310 includes
support for OMA (Open Mobile Alliance) defined
DRM solution forward lock, meaning that Content
is packaged in a DRM package and delivered to
the device. The support of forward lock means that
it is not possible to forward the downloaded
content to any other device. Forward lock is useful
for all types of content that the provider wants to
charge for.
Related information such as the “OMA-Download-
DRM, v1.0” specification can be found at http://
www.openmobilealliance.org/documents.html.
Multimedia Messaging
Reacting to the enormous popularity of mobile
phone messaging, Sony Ericsson has incorporated
the latest messaging standard into the T310/T312,
along with a colour display for an enhanced
imaging experience.
Say it in words, say it with pictures, animate it, add
sound. Multimedia birthday and holiday greetings
are great fun to put together using the T310/T312.
On vacation, use your mobile phone and
accessories to send a digital postcard with stylized
text, digital pictures of where you are, and
authentic sound clips to friends and family back
home. If, when shopping, you find something a
friend might like, you can instantly send a digital
picture of the item and ask if they like it.
With MMS, the subscription applications get more
interesting, for example stock information, movie
trailers and weather reports.