White paper
Sony Ericsson P1
47
May 2007
operator approved software from the Web
(www.sonyericsson.com/support) and have the
phone updated.
The user is guided smoothly through the update
process and no user data will be lost.
DRM
The Digital Rights Management (DRM) technology
enables the secure distribution, promotion, and
sale of digital media. Examples of such content
include screen savers, themes, ringtones, and
branded games (currently restricted to java games/
midlets only). In other words, content providers can
control how users may use different types of
content in devices, such as, mobile phones,
computers or PDAs. Content providers can also
control the use of content in related services, such
as MMS and download.
Sony Ericsson is actively focusing on technology
standardization for the DRM concept, and supports
the ongoing standardization work and activities of
the Open Mobile Alliance (OMA). Sony Ericsson is
fully committed to open standard solutions in the
mobile environment and is a principal driver of
many open standard initiatives. This will ensure the
interoperability of mobile phones in the DRM area
and also result in a strong, competitive DRM
standard.
Sony Ericsson P1 supports the OMA DRM v1
standard.
FWL – Forward Lock
Sony Ericsson P1 supports OMA DRM Forward
Lock. It is the simplest OMA use case, with no
special licences defined. The content is provided in
a single DRM packaged file, thus protecting the
content from being distributed by the user. It
enables a secure means for the content provider to
deliver/provide content which incurs a charge.
Forward Lock content will normally be received by
Sony Ericsson P1 as part of an MMS message or
via HTTP download. Sony Ericsson P1 supports
OMA Download. More information is available at
www.sonyericsson.com/developer.
CD – Combined Delivery
Sony Ericsson P1 supports OMA DRM Combined
Delivery/Forward Lock. Content and associated
licences are downloaded or delivered to the user
as a single DRM packaged file. This means that the
content or licence issuer controls to which extent
the content can be used. As with pure Forward
Lock, the user will be unable to distribute this
content for use on another device.
SD – Separate Delivery
Sony Ericsson P1 supports OMA DRM Separate
Delivery. Content and associated licences are
received as separate DRM packages, either
simultaneously or at different points in time. This
enables the distribution of content to other users –
with the same possibilities to control the use of the
content as exist with Combined Delivery/Forward
Lock. Distribution of content to other users will
require them to obtain licences from the licence
issuer.
Protection properties
Content that is protected according to the OMA
DRM standard is given special properties.
Content with Forward Lock protection cannot be
further distributed since the “Send to” option is
disabled.
All three types of protected content (FWL, CD and
SD) packages can be transferred to a Memory
Stick Micro™ (M2™) memory card, thereby
enabling storage of large amounts of content.
OMA DRM Combined Delivery/Forward Lock
protected content on a Memory Stick Micro™
(M2™) cannot be used in another device other than
the device it was saved on. Only Separate Delivery
packages can be used on another device, after
obtaining licences to use the content on the new
