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White Paper T290i/T290c
7 October 2004
Key functions and features
Multimedia Messaging - Digital
greetings
Reacting to the enormous popularity of mobile
phone messaging, Sony Ericsson has incorporated
the latest messaging standards into the T290i/
T290c phone, 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 your phone. 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.
With MMS, the subscription applications get more
interesting, for example stock information, movie
trailers and weather reports.
Speakerphone
Speakerphone is a feature that allows the user to
utilize the phone in “Public Mode” where the phone
routes audio to the loudspeaker. With speaker
-
phone, the user can place the phone at a greater
distance away than normally is possible and still
communicate effectively. Multiple individuals in
close proximity can also participate in a phone call.
The speakerphone functionality works with all
accessories except those that inherently modify
audio behaviour such asa PHF, a car kit, or a desk
speakerphone.
Chinese phonebook sorting
You can look up and call a contact in your phone-
book by entering the first letter of the name you
want to call. Chinese phonebook sorting makes it
possible to look up and call contacts not only by
entering Latin letters but also by using Chinese
characters.
Polyphonic ring signals
Pleasing to the ear, polyphonic ring signals play
several tones simultaneously making a more musi
-
cal sound. The word “polyphony” means playing
with several tones at the same time. Almost all
music that we listen to consists of polyphonic mel
-
odies. Polyphonic sounds and ring signals are
widely used in GSM mobile phones.
The T290i/T290c will contain several polyphonic
ring signals. Users can share ring signals, and
download them from the Web.
Early Ericsson mobile phones supported a proprie-
tary 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 qual
-
ity. The MIDI files are small, and perfect for mobile
devices which have limited storage capacity.
MIDI - Musical Instrument Digital Interface - is a
specification for a communications protocol princi
-
pally used to control electronic musical instru-
ments. 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,
but instead it contains binary data (information) of
how a melody is played. When these data reach a
synthesizer, the synthesizer will translate the binary
data to music, when connected to an amplifier with
speakers so that the sound becomes audible.
Please visit www.midi.org for more information.
Downloadable games
Gaming is already a very popular feature in Sony
Ericsson phones. In addition to pre-installed
games, now the mobile Internet portal offers the
possibility of downloading games. Network opera
-
tors may also offer downloadable games to their
customers as an added value offer. Users can add
new games and skill levels to further enhance the
entertainment value of Sony Ericsson phones.
Downloading of games on T290i/T290c is made
possible by a true virtual machine. The Sony Erics
-
son portal for downloading of free games is acces-