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VISVESVARAYA TECHNOLOGICAL

UNIVERSITY , BELGAUM, KARNATAKA

BMS INSTITUTE OF TECHNOLOGY

Dept. of Computer Science and EngineeringPresented by:

Ashish.k

(1BY09CS008)

8th semester

Computer science dept.

under the guidance of

Associate professor : Hema Malini

Computer science dept.

BMS institute of technology

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UNDER THE GUIDANCE OF: MRS HEMA MALINI

DLNA

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INTRODUCTION

DLNA is an acronym forDigital Living Network Alliance.

It is a series of guidelines used by manufacturers of consumer

electronics to allow entertainment devices within a home sharemedia content with each other seamlessly across a home

network.

The organization provides guidelines defining a framework of

network protocols that support this interoperability concept.

There is also a certification program to identify products that

comply with DLNA guidelines.

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HISTORY

DLNA was formed in 2003 by 21 companies including Microsoft,Intel, HP, IBM, Sony, Philips, Toshiba, Pioneer, Motorola andNokia.

It currently has more than 200 members, including virtually all ofthe global brands in PC,CE and mobile electronics.

The latest version of the DLNA Interoperability Guidelines,version 1.5, was published in March 2006 and then expanded in

October 2006 .

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DLNA

DLNA is a standard based on UPnP model, whose primitive

goal was to attach all devices directly to computer.

With a view to interconnect devices seamlessly, DLNA was

brought to light. DLNA represents the content negotiation andsharing portion.

At a customary level, a DLNA device works like any other

device by discovering other DLNA-enabled hosts. But its

competence doesnt stop there. The DLNA device goes on tolearn otherdevices capabilities.

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WHY DLNA?

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Three main pools of electronic goods that prevail in today'sworld are :

1. MOBLIE INTERNET WORLD

2. PC INTERNET WORLD

3. CE BROADCAST WORLD

Consumers wish to inter-operate in these 3 zones Digital Living Network Alliance (DLNA) is a cross-industry

organization of leading operators of these 3 islands - consumerelectronics, computing industry and mobile devices.

They provide a seamless environment for sharing and growingnew digital media and content services.

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DLNA ARCHITECTURE

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1. MEDIA FORMAT

Media Formats describe how digital content is encoded andformatted for image, audio, and AV.

Media Class Mandatory

Formats

Optional

FormatsImage JPEG PNG, GIF, TIFF

Audio LPCM AC3, AAC, MP3,

WMA9,

ATRAC3plus

Video MPEG2 MPEG1, MPEG4,

VC1, MPV1

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2. MEDIA TRANSPORT

Media Transport defines how content moves across

the network.

Mandatory

Transport

Optional TransportHTTP1.1 RTP

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3. NETWORK STACKS

The basis for UPnP Networking (and thus DLNA) is the TCP/IP

v4 protocol.

Discovery is done via an HTTP Multicast over UDP.

Definition, control, and eventing services are delivered viaHTTP over TCP

Every device must implement a DHCP client, and search for a

DHCP server when first connected to the network. If a DHCP

server is discovered, the device must use the IP address

assigned by the server. If no DHCP server is discovered, thedevice must use Auto-IP to generate a link-local IP address.

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4. NETWORK CONNECTION

Three network connection technologies are incorporated inthe DLNA 1.5 Interoperability Guidelines:

10Base-T and 100Base-T Ethernet(802.3i / 802.3u) forwired connections.

WiFi (802.11a /802.11b/802.11g) for wirelessconnections.

Bluetooth for wireless connections for mobile handhelddevices such as cell phones and PDAs.

Additional network connections such as 1000Base-TEthernet (802.3ab) and faster WiFi (802.11n) will beadded to the Guidelines in the future.

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5. DISCOVERY

Discovery includes device and service discovery.

This takes into account -

1. Discovering the presence and capabilities of other devices

in the connected network.2. Control and interconnect with the discovered devices.

The Service protocol used in DLNA is SSDP - Simple Service

Discovery protocol.

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HOW DOES DLNA WORK?

DLNA works in two ways:

1. Pull Type UI2. Push Type UI

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PULL-TYPE UI

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PUSH-TYPE UI

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QUALITY OF SERVICE (QOS)

Quality of service is the ability to provide different priority to

different applications, users, or data flows, or to guarantee a

certain level of performance to a data flow.

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AUTHENTICATION & AUTHORIZATION

Authentication is the mechanism whereby systems may securely

identify their users. Authentication systems provide an answer

to the questions:

Who is the user?

Is the user really who he/she represents himself to be?

Authorization, by contrast, is the mechanism by which a system

determines what level of access a particular authenticated usershould have to secured resources controlled by the system.

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CONCLUSION

With growing demand for consumer goods, there is an equal rise in crave forinterconnecting devices, be at home or office. DLNA is THE way to achieveis.

The best aspect of DLNA is that it allows products from differentmanufacturers to talk to each other.

With DLNA all leading CE companies are tied in a technological knot; thereis interdependence, yet independence with their own products.

In the near future, digital homes will contain intelligent platforms which will

manage and distribute rich digital content to rendering devices such astelevisions and wireless monitors from devices such as digital cameras,camcorders and multimedia mobile phones.

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QUESTIONS?

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THANK YOU