DLNA 數位生活網路介紹明新科技大學資訊管理學系助理教授清華大學自強工業基金會通訊類講師工研院資通所無線通訊技術組顧問麟瑞科技顧問

DLNA數位生活網路介紹

明新科技大學資訊管理學系助理教授清華大學自強工業基金會通訊類講師工研院資通所無線通訊技術組顧問麟瑞科技顧問 & 摩鐵科技顧問林文宗博士E-mail: [email protected]: http://wtlin.csie.must.edu.tw/

All rights reserved by Assistant Professor Wen-Tsung Lin. 2

AgendaDLNA introductionDLNA home network architectureDLNA Device ModelGuideline Terminology and ConventionsUPnPConclusion


References Acquisition 85 reference items.

https://www.bluetooth.org/ IEEE (802.1D/1Q/802.3/802.11) http://www.wi-fi.org (Test Plan/Spec.) http://www.icea.net/ ISO/IEC, IETF RFCs http://www.upnp.org/ http://www.w3.org/ http://www.microsoft.com/ http://www.atsc.org/ http://www.3gpp.org/ http://thomas.loc.gov http://www.opengroup.org/

DLNA introduction

Digital Living Network Alliance

影片介紹


DLNA 源起


The DLNA Visions


Home Network


Digital Content Access


Accessing content with amobile device


A Connected Environment

ServicesServices

PCs, appliances, and PCs, appliances, and services interconnectservices interconnect

MultimediaMultimediainformationinformation

Technologies Technologies converge,converge,devices don’tdevices don’t


Interest in Networking Entertainment Content


Trends Consumers are acquiring, viewing and managing an

increasing amount of digital media on devices in the CE, mobile and PC domains (see Figure 1). They want to enjoy this content easily and conveniently – regardless of the source – across different devices and locations in the home.

This trend is fueled by the proliferation of digital media and IP networking and supported by several leading market indicators. Digital device sales: music players, cameras, camcorders, DVD

players, multimedia mobile phones and personal video recorders.

Broadband adoption: DSL and cable Home network adoption: wired and wireless; ad-hoc and

infrastructure configurations


Problem Three islands exist in the home

The PC Internet World where PC and PC peripherals communicate.

The CE Broadcast World of set-top boxes and traditional consumer electronics.

The Mobile World of multimedia mobile phones, personal digital assistants, MP3 players, laptop computers and similar devices provides unparalleled connectivity and freedom of movement into and out of the home environment.

Consumers want devices in these three islands to work together in the home, but expectations have largely been unfulfilled.


Consumer Challenges Consumer Challenges

Products designed for the home should be easy to install, provide obvious user value and be affordable.

Digital home products must interoperate with each other and with existing CE devices such as TVs and stereos.

Product Developer’s Dilemma Open industry standards are often too flexible – products built by

different vendors all too often fail to interoperate well. Design choices should be narrowed through industry consensus to better achieve interoperability.

Current end-to-end solutions based on proprietary vertical implementations bring products to market early but have little impact on rapidly establishing a new category of products.


DLNA Introduction The Digital Living Network Alliance (DLNA) is a cross-industry

organization of leading consumer electronics, computing industry and mobile device companies.

DLNA shares a vision of a wired and wireless interoperable network of Personal Computers (PC), Consumer Electronics (CE) and mobile devices in the home and on the road, enabling a seamless environment for sharing and growing new digital media and content services. DLNA is focused on delivering interoperability guidelines based on open industry standards to complete the cross industry digital convergence.

In the DLNA digital home, it will be common for consumers to: Easily acquire, store and access digital music from almost anywhere in

the home Effortlessly manage, view, print and share digital photos Take favorite content anywhere to share with family and friends Enjoy distributed, multi-user content recording and playback


DLNA Interoperability Guidelines


Introduction The DLNA Home Networked Device Interoperability Guidelines are

use case driven and specify the interoperable building blocks that are available to build platforms and software infrastructure. They are focused on interoperability between the devices for personal media uses involving imaging, audio and video.

The DLNA Home Networked Device Interoperability Guidelines has been created in a unique cross-industry effort that combined the efforts of over 100 Consumer Electronics, PC industry and Mobile Device companies from around the world who worked together with the aim of achieving the world's first substantial platform for true interoperability between personal computer and consumer electronic devices.

The Interoperability Guidelines provide product developers with a long-term architectural view, plus specific guidance for IP-networked platforms, devices and applications in the home.


Functional Components & Technology Ingredients


StrategyTo deliver interoperability in the digital

home, DLNA has focused on three key elements.Industry collaborationStandards-based interoperabilityCompelling products


The DLNA Guidelines Creation Process


Key Technology Components Networking and Connectivity Device and Service Discovery and Control Media Format and Transport Model Media Management, Distribution, and Control Digital Rights Management / Content Protection Manageability


DLNA Media Formats


DRM and Link Protection Link protection allows for secure play out of

premium content hosted in a DRM system. For example, a link protection enabled DMP (player)

can play DRM-protected content that is stored on a DMS (server).

Figure illustrates examples of devices that contain DRM and devices that only support link protection.

DLNA home network architecture


DLNA Home Network Architecture


DLNA Home Network Architecture

Networking and Connectivity Wired/Wireless IPv4 protocol suite Network Quality of Service

Device Discovery and Control UPnP Device Architecture

Media Management UPnP AV v1 Printer

Media Formats Image Audio XHTML Print documents

Media Transport HTTP 1.0/1.1 RTP

DLNA Device Model


DLNA Device Model These guidelines address the requirements of devices wi

th differing environmental characteristics. home network devices mobile handheld devices

Home Network Devices (HNDs) and Mobile Handheld Devices (MHDs) are Device Categories that have a differing set of requirements in media formats and network connectivity.

To support interoperability between Home Network Devices and Mobile Handheld Devices, a Home Network Device to meet all the requirements for the corr

esponding Mobile Handheld Device a Mobile Handheld Device to meet all the requirements for the c

orresponding Home Network Device


Device Categories In most cases that may not be feasible, so another way

to achieve interoperability is via a group of devices that will be able to provide bridging or content transformation services between these two Device Categories. Bridging network connectivity between the MHD and the HND

Device Categories Media format interoperability services between the MHD and the

HND Device Categories In summary,

Each is uniquely optimized for the requirements of a particular environment.

The device guidelines focus on interoperability of devices within a Device Category.

There are guidelines for devices which facilitate interoperability between Device Categories.

A device may choose to be a member of multiple Device Categories.


DLNA Device Model Terms Hierarchy


Device Model Elements (I) Device Category

An aggregation of device classes with common environmental characteristics (e.g. mobile devices) and sharing System Usages that enable home networking use case scenarios.

A single physical device may fall into multiple Device Categories. System Usage

describes a device interaction model between Device Classes and/or Device Capabilities. System Usages are derived when enabling home networking use case scenarios.

Device Class Device Functions (at least one) aggregated to be used in a

System Usage that enables home networking AV use case scenarios.


Device Model Elements (II) Device Function

A Device Function is an operational component at the Device Discovery and Control layer of the DLNA architecture such as a "UPnP Device".

Device Classes and Device Capabilities are composed of a set of Device Functions.

Device Capability is a set of Device Functions (at least one) aggregated to be used

in a System Usage that is enabling home networking AV use case scenarios.

Device Option Provides optional extensibility to an existing Device Class definiti

on, such as upload functionality added to a MediaServer Device (MSD), or it provides a new optional Device Function to the DLNA architecture, such as RTP.

A Device Option differs from a Device Class or Device Capability in that it normally enables a Device Class or Device Capability to perform an existing System Usage in a different way (e.g., RTP).


Device Functions IP Connectivity

Network Connectivity and Network stack (Section 7.1). UPnP Device and UPnP Control Point (UPnP CP)

Device Discovery and Control based upon the UPnP Device Architecture (Section 7.2).

UPnP AV MediaServers (MSD), UPnP AV MediaServer Control Point (MSCP), UPnP AV MediaRenderer (MRD), UPnP AV MediaRenderer Control Point (MRCP), UPnP Printer Device (PrD), and UPnP Printer Control Point (PrCP) Media Management (Section 7.3).

Media Transport Server and Media Transport Client Media Transport (Section 7.4).

Content Interoperability Guidelines Media Formats volume [77].


裝置種類裝置種類是用系統用法分享普通的環境特性（需求）的一個裝置班級的配列 .家庭網路裝置 (HNDs)移動的手提裝置 (MHDs)家庭下層構造裝置 (HID)


裝置類別和角色 (I)數位媒體伺服器 (DMS) (HND)

the 2-Box Pull System Usage 數位媒體播放器 (DMP) (HND)

the 2-Box Pull System Usage 數位媒體發訊器 (DMR) (HND) 數位媒體控制器 (DMC) (HND) 數位媒體印表機 (DMPr) (HND) 移動的數位媒體伺服器 (M-DMS) 移動的數位媒體播放器 (M-DMP) 移動的數位媒體上傳 (M-DMU) 移動的數位媒體下載 (M-DMD) 移動的數位媒體控制人員 (M-DMC)


裝置能力和角色 (II)推動控制人員 (+PU+)

推動當地內容到 DMR.

印刷控制人員 -1 (+PR1+)控制 DMPr 列印影像內容 .

印刷控制人員 -2 (+PR2+)控制 DMPr 列印影像內容 .

一個上傳控制人員 (+UP+)將內容送到 DMS 或 M － DMS 確認上傳 .

一個下載控制人員 (+DN+)本身下載來自 DMS 或 M － DMS 的內容 .


系統用法2-Box Pull System Usage2-Box Push System Usage3-Box System Usage2-Box Printing System Usage3-Box Printing System UsageDownload System UsageUpload System Usage


2-Box Pull System Usage

1. 喚起 UPnP 行動瀏覽而且選擇內容 .2. 請求錄音內容再生 .3. 運送內容到 DMP 或 M － DMP.


2-Box Push System Usage

1. 喚起 UPnP 行動建立錄音再生會議 .2. 請求錄音內容再生 .3. 運送內容到 DMR.


3-Box System Usage

1. 喚起 UPnP 行動瀏覽而且選擇內容 .2. 喚起 UPnP 行動查證 DMR 有能力提出挑選的內容然後建立一個為連接 DMR 和 DMS 之間挑選的內容或 M － DMS.3. 請求錄音內容再生 .4. 運送內容到 DMR.


2-Box Printing System Usage

1. 喚起對 DMPr 的 UPnP 行動藉由提供網址開始印刷工作 XHTML －印刷的文件 .2. DMPr 獲得來自印刷控制人員 -1 的 XHTML －印刷的文件 .3. DMPr 請求來自印刷控制人員 1 的影像內容 .4. 印刷控制人員 1 以影像內容回應 .


3-Box Printing System Usage

1. 喚起 UPnP 行動到瀏覽而且選擇影像內容 .2. 為此準備網址挑選的影像內容而且在 XHTML －印刷的參考網址証明 .3. 在 DMPr 上喚起 UPnP 行動藉由提供網址給 XHTML －印刷的文件開始印刷工作 .4. DMPr 獲得來自印刷控制人員 -2 的 XHTML －印刷的文件 .5. DMPr 請求來自 DMS 或 M － DMS 的影像內容 .6. DMS 或 M － DMS 以影像內容回應 .


Download System Usage

1. 喚起 UPnP 行動發現滿足的下載 .2. 請求需要被下載的內容 .3. 運送內容到下載控制人員或 M － DMD.


Upload System Usage

1. Invoke UPnP actions to create a CDS entry for the content to be uploaded.2. Transport the content being uploaded to the DMS or the M-DMS.


Home Infrastructure Device (HID) System Usage (I)

2-Box Pull System Usage Interaction Model Between Device Categories


Home Infrastructure Device (HID) System Usage (II)

M-NCF Bridging the Network Connectivity gap between MHD and HND Device Categories


Home Infrastructure Device (HID) System Usage (III)

Media Interoperability Between Device Categories


Guideline Terminology and Conventions

Guideline Font Usage Conventions Hyperlinks to reference citations are indicated as

[number]. For example [1], [20], … HTTP headers and methods are always in bold font,

such as CACHE-CONTROL. UPnP action names are indicated as: [Service

acronym]:[action name], such as CDS:Browse. Special terms may be italicized. Sometimes a

guideline requirement will define a term for use within that guideline and the term will be italicized.



Guideline Syntax Notation Conventions Linear whitespace (LWS) characters, such as

carriage returns, spaces, tabs, or line feeds, are not implied anywhere in any of the syntax (BNF) definitions used within the Interoperability Guidelines.

The use of LWS characters is restricted within the DLNA Interoperability Guideline unless explicitly specified in any of the syntax definitions with reference to UPnP HTTP communications.



Guideline Normative and Informative Text ConventionsNormative text includes introductory text

before guideline requirement tables, but testable requirements are only contained within guideline requirement table entries.



DLNA XML Namespaces & Schemas


Appendix Network Infrastructure Device (NID) Tuner Representation UPnP Devices with Multiple Network Interfaces Printer Support Example Applications of the Uniform Client Data

Availability Model Auto-IP Developer Guidance Mobile Network Connectivity and Power Saving

Operation Principles RTP Protocol Stack and SDP/RTSP/RTCP Parameters

UPnP


Abstract UPnP is a distributed computing framework based on

Web technologies that is intended for use in local area networks -- especially home networks.

Over the years, valuable lessons have been learned from the efforts of various companies to develop and deploy products based on this technology.


Introduction Digital Content: audio, images, MP3, web content, etc. Games and entertainment Home automation (remote controls, security, environmen

tal controls, etc.) Communication: VOIP, video calls, instant messaging, te

le-presence, ambient presence Home office applications Health Care in place (assisted living and care-giving) Education Automobiles as an integrated, though mobile, part of ho

mes


IntroductionOur vision of ubiquitous or pervasive

computing is captured by the following quote from the IEEE Pervasive Computing Magazine…


Challenges Consumers make bad network and security

administrators Security issues are not limited privacy or

confidentiality, they include physical safety Access control must be flexible enough to

accommodate different roles including owner, family, friend, visitor, maintenance/support, hostile, unknowns

Smart homes will be incrementally deployed and their configuration will be moderately dynamic


Challenges Transient connectivity will be a recurring

problem Whenever possible no infrastructure services

should be assumed Legacy products need to be supported and new

products should be future proof Third party interoperability is essential Components will fail – someone has to figure out

what is broken and how to fix it


UPnP forum UPnP – Universal Plug and Play

is a technology intended for smart homes, small offices and other types of local area networks.

It was originally created by Microsoft Corporation in 1999. UPnP is now under the control of the UPNP forum (htt

p://www.upnp.org), an independent organization with over 770 members.


DLNA The Digital Living Network Alliance (DLNA)

a consortium of over 240 consumer electronics companies whose goal is to develop the standards needed for interoperable networked products for Digital Homes.


Protocol Stack


Brief summery Discovery is Step 1 in UPnP networking.

Discovery comes after addressing (Step 0) where devices get a network address. Through discovery, control points find interesting devices.

Discovery enables description (Step 2) where control points learn about device capabilities,

control (Step 3) where a control point sends commands to devices

eventing (Step 4) where control points listen to state changes in devices

presentation (Step 5) where control points display a user interface for devices.


UPnP 0. Addressing

IPv4 and IPv6 auto-configuration protocols 1. Discovery

SSDP (Simple Service Discovery Protocol) 2. Description

XML, data types, device and service descriptions 3. Control

SOAP (Simple Object Access Protocol) 4. Events

GENA (General Event Notification Architecture) 5. Presentation

HTML and vendor extensions


A Connected Environment

ServicesServices

PCs, appliances, and PCs, appliances, and services interconnectservices interconnect

MultimediaMultimediainformationinformation

Technologies Technologies converge,converge,devices don’tdevices don’t


The Reality

Tough problems…Tough problems…

ConnectivityConnectivitySimplicitySimplicity

ReliabilityReliability

PrivacyPrivacy

Making it meaningful to Making it meaningful to consumers?consumers?

CommunityCommunityConvenienceConvenience

CommunicationCommunication

Personal securityPersonal security


UPnP: Invisible Networking

Enable devices to be automatically configured when they…Connect to a network Communicate their capabilities Control information to any appropriate control

application

Devices Just “Work” When They are Connected


802.11

PowerLine

Internet

HomePNA*

Bluetooth**

1394

Complex networking! Powerful, Invisible networking!

UPnP Network

Internet

Vision Create a Plug and Play experience for consumers to:

Easily share an Internet connection Enjoy digital multimedia content on preferred devices Securely access content in the home from anywhere


What is Universal Plug and Play Technology?

Provides invisible home networkingArchitectural framework for self-

configuring, self-describing devicesLeverages existing Internet technologiesEnables dynamic peer-to-peer networking

Key to making the connected home experience Affordable, mainstream reality for usersSignificant opportunity for the industry


UPnP StrategyJust send data over the network

No executablesMinimize version issuesMinimize security issues

Allows implementation to be platform & vendor specific

Be agnostic re: programming language, OSUpdate implementation w/o (without) affecting interop

Improve performanceReduce footprintImprove capabilities

Agree on meaning / format of dataChoose substrate of proven protocolsDefine device (service) specific protocols in a Forum


Business Opportunities: Huge Growth!

Non-PC devices (4 billion embedded microprocessors in 1999)Rapidly increasing Internet adoption ratesStrong uptake in Internet broadband deployments64% of U.S. PC homes have television and PC in the same room34% of U.S. PC homes have 2 or more computersBy 2004

27MM networks installed48.5MM nodes / year run rateServices a $3BB / yr business

0

10000

20000

30000

1999 2000 2001 2002 2003 2004

Home Network Install Base

ROWAsiaEuropeNorth America

Source: Cahners-Instat


IP telephony application listens for IP telephony application listens for incoming callsincoming calls

UPnP Residential Gateway Example

End User Benefits: Automates real-time setup and configuration of Internet applicationsMulti-player gaming, streaming audio/video, VoIPEnables software to automatically setup and configure the NAT and Firewall End user no longer needs to configure network

Service Provider Benefits: Eliminates support calls for NAT, firewall, gaming configuration Enables customer self-provisioning for enhanced servicesReduces barriers to deploy voice, video, gaming, etc.

Application re-configures, Internet Application re-configures, Internet Gateways, NAT and Firewall on a Gateways, NAT and Firewall on a per-call basisper-call basis

Internet


Audio & Video Example

Media Server

1. Discovery of devices and services2. Browsing of content3. Selection of streaming protocols4. Streaming and Playback (out of band*)

InternetContent

CDs, DVDs, Flash Cards

LocalContent

End User Benefits:Discover A/V content on all UPnP devices and PCs and share across home networkStream content easily from any device to any device on home networkControl point offers rich, easy to use interface for creating and managing mediaSupports DVD, CD, play list, photo album, live broadcast, etc

Manufacturer and Service Provider Benefits:Highly extensible – any data type, any transfer protocol, any combination of server, render, and control pointHighly scalable – ultra low resource devices (cameras, EPF) up to high-end servers (PCs, media servers, Internet, broadcasts, PVR).

Stereo

TV

Picture Frame

Remote Control

* Out of band = not UPnP Constrained

UPnP devices added to network and discovers

media content


End User BenefitsNo need to install or share printer on the PC or and manually connect all devices to the network (no networking knowledge needed)Automatically discover printer/scanner and no need to search for new imaging devices added to the network.

Manufacturer and Retailer BenefitsReduce customer and service support with driver questions and how to network printer on home networkAbility to print and scan from an extended range of devices not support previously (Pocket PCs, Cell Phones, Web Tablets)

UPnP Imaging Example

UPnP NetworkUPnP Network

Plug Printer/Scanner directly into any available network port

Imaging devices are discovered and can

immediately be used (no drivers or setup needed)

New wireless devices enter network and have

instant access to printer/scanner

WiFi (802.11b)WiFi (802.11b)


End User BenefitsCustomizable and easy control of heating, venting, AC unit, motion sensors, lighting and security (personal environment presets)Save money on energy bills (set temperature automatically from occupancy or depending on outside temperature)Synchronize home settings with PC programs (Outlook calendar, Internet weather)Enable secure remote access into the home via the Internet and control UPnP devices.

Manufacturer and Retailer BenefitsUPnP enabled automation systems add much more functionality over existing proprietary control panels (more desirable over existing technology)New opportunities for manufacturers to extend additional features available to the PC, Internet, or other devices (more revenue with new business models, software and service offerings)

UPnP Automation Example

HVAC Unit Thermostat

UPnP NetworkUPnP Network

UPnP bridge connects non-UPnP devices to network

Synchronize temperature settings with Outlook, the Internet (a weather

web site) or other UPnP devices (UPnP alarm clock)

Use wireless device (Pocket PC) to control

HVAC system from anywhere in the home


Benefits of UPnPWidely supported networking specification

No device configuration, just Plug and Play

Small footprint software component on the device

Utilizes standard Internet protocols to talk to LAN

Independent of OS, language, or physical connectivity

Robust and dependable

Growing value of UPnP logo

UPnP simplifies device connectivity for makers and users of devices

Advantages


UPnP is Cost Effective

Lightweight by Today’s StandardsTCP/IP stack is about 35K bytes of x86 code and 29K gates

Embedded HTTP Web server is about 25K bytes of x86 code and 64K gates

An entire OS can fit into one Read Only Memory (ROM)

No Royalties for Basic UPnP InteroperabilityOther proprietary solutions require significant royalties

UPnP Enables Remote User Interface Via Browser

Cheaper than integrated LCD panels and keypads

Authored with HTML, XML, and scripting

For Appliances and Smart Objects

Advantages


Bottom Line Impact

Improve customer experience = repeat sales

Enhance interop between your devices and others

Expand relationships with other Forum members

Reduce $$ spent on customer support

Reduce your time to market UPnP adds value to your bottom line

Improving Your Business


UPnP Control Point vs. DeviceThree Classes of UPnP Entity

User Control Point

Controlled Device

Bridge

ControlledDevice

User ControlPoint

• User Control Point• Controlled Device• Bridge

Non-UPnPDevice

How UPnP Works


Steps to UPnP Networking

0 Control point and device obtain an address to participate in the network

1 Control point finds all devices and device advertises its availability2 Control point learns about device capabilities3 Control point invokes actions on device4 Control point listens to state changes of device5 Control point controls device and/or views device status using an

HTML UI

0 Addressing0 Addressing

1 Discovery1 Discovery

2 Description2 Description

5 Presentation5 Presentation4 Eventing4 Eventing3 Control3 Control

How UPnP Works


UPnP ArchitectureUPnP Architecture





UPnP NetworkSearchRequest

DeviceReply

How UPnP Works

Discovery: SSDPDiscovery: SSDP







UPnP Network

DeviceAdvertisement

How UPnP Works

Discovery: SSDPDiscovery: SSDP


Description: XMLDescription: XML





UPnP NetworkGet

Description

Device DescriptionXML Document

UPnP ArchitectureUPnP Architecture How UPnP Works


Control: SOAPControl: SOAP





UPnP NetworkAction:

SetPowerOn

Action ResultVCR

Turns On

UPnP ArchitectureUPnP ArchitectureHow UPnP Works


Eventing: GENAEventing: GENA





UPnP Network

Subscribe

UPnP ArchitectureUPnP ArchitectureHow UPnP Works







UPnP Network

Action:SetPowerOn

Notify:PowerOn = True

VCRTurns On

Eventing: GENAEventing: GENA

How UPnP Works







UPnP Network

HTML UI

GetPresentation

Web Browser

How UPnP Works

Presentation: HTMLPresentation: HTML


Control & EventingNetworking stack

Discovery server

Description server

Presentation server

Control & Eventing Services

IP

TCPUDP

HTTPMU HTTP

Discovery Presentation

Description

Anatomy of a UPnP DeviceHow UPnP Works


Microsoft Windows® UPnP Support

Windows ME First operating system to include UPnP support Control Point API

Rich set of interfaces for discovering, controlling and receiving events from devices.

Shell integration UPnP device icons displayed in My Network Places folder Double clicking on the device permits Web-based control

Windows XP Expands UPnP support beyond Windows ME Provides UPnP-enabled NAT traversal support Complements other extensive home networking support

How UPnP Works


Windows UPnP Users Interface

How UPnP Works


Non-profit industry standards consortium

Framework for efficient industry collaboration

Develop Device Control Protocols (DCPs) for a broad class of devices

Provide for the test qualification and interoperability of UPnP devices

A market development organizationPromotion, evangelism and marketing activities to promote UPnP brand recognition worldwide

PragmaticOpen to all

No cost to participate in Forum

Simple intellectual property policies

The UPnP ForumUPnP Forum


UPnP Resources – Tool kits to build products

UPnP Forum www.upnp.org

Allegro Software www.allegrosoft.com

Gatespace www.gatespace.com

Intel www.intel.com/ial/upnp

Metro link www.metrolink.com

Microsoft www.microsoft.com/hwdev/upnp www.microsoft.com/homenet

Virata www.virata.com/products/upnp.htm

Advantages


Universal Plug and Play Forum Steering Committee

Provide leadership Introduce working groups, appoint chairpersons, and monitor

progress Help accelerate schedules and resolve any working committee

logjams Approve standardization of device schema submitted by working

groups

Working Groups Groups consist of: A/V, Appliances, Home Automation &

Security, Imaging, and Internet Gateway Create device schema Submit device schema for standardization

Participant Roles

UPnP Forum


Universal Plug and Play Forum Technology Committee

Works directly with the various working groups to produce efficient standards for each class of device

Assists in the development and guidance of developing UPnP technology for new working groups

Marketing Committee Builds the brand of UPnP for logo’s products Creates programs for UPnP Forum Member

companies to become involved through various activities.

UPnP Forum

Participant Roles


Discovery


Discovery: Protocol stack


Discovery: Protocol stack


Description


Description: Protocol stack


Control


Control: Protocol stack


Eventing


Eventing: Protocol stack


Presentation


Presentation: protocol stack

UPnP AV Architecture


Introduction This document describes the overall UPnP AV

Architecture, which forms the foundation for the UPnP AV Device and Service templates.

The AV Architecture defines the general interaction between UPnP Control Points and UPnP AV devices.

It is independent of any particular device type, content format, and transfer protocol. It supports a variety of devices .

The following sections describe the AV Architecture and how the various UPnP AV devices and services work together to enable various end-user scenarios.


Goals To support arbitrary transfer protocols and content

formats. To enable the AV content to flow directly between

devices without any intervention from the Control Point. To enable Control Points to remain independent of any

particular transfer protocol and content format. This allows Control Points to transparently support new protocols and formats.

Scalability, i.e. support of devices with very low resources, especially memory and processing power as well as full-featured devices.


Overview (I)


Overview (II)


Playback architecture


Playback architecture (cont’d)Media Server

Content Directory Service ConnectionManager Service (Optional) AVTransport Service(Optional)

Media Renderer RenderingControlService ConnectionManager Service AVTransport Service (Optional)

Control Point

Conclusion


ConclusionsDLNA guidelines

architecturedevice model

UPnPdevice architectureSSDPGENASOAPHTTP

UPnP AV architecture

Documents

DLNA 數位生活網路介紹 明新科技大學資訊管理學系助理教授 清華大學自強工業基金會通訊類講師 工研院資通所無線通訊技術組顧問 麟瑞科技顧問

DLNA 數位生活網路介紹明新科技大學資訊管理學系助理教授清華大學自強工業基金會通訊類講師工研院資通所無線通訊技術組顧問麟瑞科技顧問