TECHNICAL SEMINAR ON
Dept of computer science & engineering
Under the guidance of
prof.Lakshmi bai G
Dept of CS&E
WHAT IS DLNA?
DLNAARCHITECTURE a) pull type
b) push type
INTER-OPERABILITYAMONG VENDOR PRODUCTS
DLNA DEVICE CLASSES
DLNA is an acronym for Digital Living Network
Established by Sony in June 2003.
Interoperability guidelines for sharing digital media.
Example use cases include:
iii. Find and Play or “Play to…”
Figure 1a) Traditionally, displaying a video or photo from a
mobile phone on a TV involves such a tedious and time-
consuming process that consumers rarely attempt it.
Figure 1b) The value proposition of DLNA is seamless and
effortless sharing of content, enabling consumers to send a
copy of a video or photo directly to the TV in a single step.
What is DLNA?
DLNA is a standard based on UPnP model.
Main goal is to attach all devices to each other over a
UPnP is set of protocols for devices to discover each
other’s presence on a network.
Interconnecting of devices over a network.
Three main pools of electronic goods that prevail in today's
Consumers wish to inter-operate in these 3 zones
1) consumer electronics
2) computing industry and
3) mobile devices.
They provide a seamless environment for sharing and
growing new digital media and content services.
DLNA System Architecture
DLNA Pull-type architecture is suitable for desktop
The Pull-type Model has a
(1).Digital Media Player (DMP) which receives user
commands through a user interface (Pull-UI).
(2).The control server browses the Content Directory
Service (CDS) for the user’s query.
(3).Digital Media Server (DMS) detects the URL of the
target content and passes on to Transport client.
(4).The Transport client in DMP uses this URL to retrieve
the target content from the transport server in DMS.
(5).The play engine in DMP receives the content and
renders it on a display.
(6).Note that there is no user interface in the DMS.
The Push-type architecture is suitable for handheld mobile
This model has a
(1)Digital Media Renderer (DMR) is adopted as the
player. It has no user interface.
(2)The Play engine is controllable from outside.
(3)Push controller is added into the DMS which
provides push controlling functions (i.e. a user interface
and a player control function).
Inter-operability among vendor
The devices and software of DLNA devices should be
Vendors and manufacturer has to obey some of standards.
The building blocks in order to achieve interoperability are:
Networking and connectivity
Common media format and streaming protocols
DLNA Device Classes
Mobile Digital Media
Home Network Devices consist of:
1) Digital Media Server (DMS)
2) Digital Media Player (DMP)
3) Digital Media Renderer (DMR)
4) Digital Media Controller (DMC)
5) Digital Media Printer (DMPr)
Mobile Hand-held Devices category includes devices for
server, controller and player, with similar functionality as
in the Home Network Devices category.
Additionally, the class contains:
1) Mobile Digital Media Uploader (M-DMU)
2) Mobile Digital Media Downloader (M-DMD)
Home Interoperability Devices consists of:
1) Media Interoperability Unit (MIU)
2) Mobile Network Connectivity Function (M-NCF)
Digital Rights Management (DRM)
Content must be protected from unauthorized copying and use.
Today, there are several DRM technologies available to device
designers and content providers.
For example: (1)authentication
DLNA provides interconnecting of devices at home or
It operates within a range of 50 to 75 meters.
The best aspect of DLNA is that it allows products
from different manufacturers to talk to each other.
With DLNA all leading companies are tied in a
technological knot; there is interdependence, yet
independence with their own products.
 DLNA www.dlna.org
 UPnP www.upnp.org
 DLNA Overview and Vision White Paper, 2007
 DNS Based Service Discovery: Zero Configuration
Networking, 2007 http://www.zeroconf.org/
 Home Phone-line Networking Alliance
 Approaches to Home Connectivity, Marko Berg,
Helsinki University of Technology firstname.lastname@example.org