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P800 Smartphone
White Paper, May 2002
32
An MMS message can contain one or more of the following:
Text
As with SMS and EMS, an MMS message can consist of normal text. The length of the text is
unlimited, and it is possible to format the text. The main difference between an EMS and MMS
message is that in an MMS message, text can be accompanied not only by simple pixel images
or melodies but by photographic images, graphics, audio clips and in the future, video sequences.
Audio
MMS provides the ability to send and receive full sound (iMelody, WAV and AMR) messages. Not
only can users share a favourite song or ring signal with a friend, they can also use the mobile
phone to record sound and send it along with a message. Because sound includes speech as
well as music, this extra dimension of an MMS message makes for enhanced immediacy of
expression and communication. Rather than sending a downloaded birthday jingle in EMS, for
example, a user can send a clip of his or her own personal rendition of “Happy Birthday”.
Pictures
With the built-in CommuniCam, users can take a snapshot and immediately send it using the
‘Send As MMS’ facility. The ability to send pictures is one of the most exciting attributes of MMS,
as it allows users to share meaningful moments with friends, family and colleagues.
Mobile picture transmission also offers inestimable utility in business applications, from sending
on-site pictures of a construction project to capturing and storing an interesting design concept for
later review. Editing a picture by adding text allows users to create their own electronic postcards,
an application that is expected to substantially cut into the traditional postcard-sending market.
The P800 supports the following image formats for MMS: GIF, JPEG, WBMP and BMP.
PIM Objects
With MMS in the P800, it is easy to send and receive business cards (vCard), Calendar and
Tasks entries (vCal) and Jotter notes (text content is added to a slide). Received PIM objects are
listed under the ‘Attachments’ tab.
SMIL presentations
SMIL stands for Synchronized Multimedia Integration Language and is pronounced “smile”. SMIL
in the P800 allows the user to the create and transmit multiple-slide style presentations on the
mobile device. SMIL is an advanced XML-based protocol, and Sony Ericsson MMS supports a
subset of this protocol. Using a simple media editor, users can incorporate audio and animated
GIFs along with still images, animations and text to assemble full multimedia presentations. The
idea of SMIL is to allow the user to customize the page timing in slide presentations. The user
can decide in which order the image and text will be displayed, as well as for how long the
images and text lines are to be shown in the display. The user never sees the underlying SMIL
code and does not need to understand it.
The P800 has an implementation of SMIL 2.0 Basic Profile. Messages created by the P800 use a
subset of SMIL as defined in the Conformance Specification (see below).
Timing of individual media objects must be inside the time-to-display for an individual slide. This
provides plenty of flexibility and greatly reduces the complexity of building a presentation.