1. DLNA Technology Kevin Liu Advisor Hsing Mei Web Computing Laboratory Graduate Institute of Applied Science and Engineering, Fu Jen Catholic University March 15, 2008

2. 2 2 Outline Introduction DLNA System Overview Conclusion Reference

3. 3 About DLNA DLNA ： Digital Living Network Alliance –first set of Interoperability Guidelines in June 2004 –The latest version of the DLNA version 1.5, was published in March 2006 and then expanded in October 2006. –DLNA certification program requires Universal Plug and PlayUniversal Plug and Play –There are more than 3000 DLNA CERTIFIED™ products from 36 different manufacturers –Registered as of September 2008, out of which about 900 are publicly listed on the DLNA website.

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5. 5 DLNA DLNA is popularized slowly according to four steps ： –Apt to set up and use –Digit Right Management –The network encrypting –QoS

6. 6 Introduction Streaming AV content on home networks has become a hot topic in the Consumer Electronic industry. DLNA defined two 2-box streaming models ： –Pull-type –Push-type

7. 7 DLNA System Architecture

8. 8 DLNA System Overview Pull-type –Usually applied to desktop devices. –It is natural for a user to browse a content directory locally on a desktop player. e.g. a digital TV –Whereas the server may be placed in another room.

9. 9 DLNA System Overview Pull-type Model –Digital Media Player (DMP) receives user commands through a user interface (Pull-UI). –Browses the Content Directory Service (CDS) –Digital Media Server (DMS) Detect the URL of the target content. –Transport client in DMP uses this URL to retrieve the target content from the transport server in DMS. The play engine in DMP receives the content Renders it on a display. Note that the play engine here is private, i.e. it does not accept controls from outside the DMP. There is no user interface in the DMS. –Not support push-type streaming.

10. 10 DLNA System Overview Push-type –Suitable for handheld mobile devices –Provides direct control methods on content servers.

11. 11 DLNA System Overview Push-type Model –Digital Media Renderer (DMR) Adopted as the player No user interface Play engine is public (i.e. controllable from outside). –Push controller is added into the DMS. Which provides push controlling functions (i.e. a user interface and a player control function). –Not support pull-type streaming.

12. 12 DLNA System Overview –In a network consisting of desktop and mobile devices. Both pull-type and push-type are needed. –DLNA does not provide

13. 13 Conclusion DLNA 屬於一個封閉性的架構 Digital Transmission Content Protection over Internet Protocol (DTCP-IP) – 主旨在於保護優質付費內容在家庭網路中進行 傳輸時的安全 數位版權管理 (DRM) 互通性的建議，以訂 定一個能使各種 DRM 產品相容的開放性標 準。

14. 14 Reference Digital Living Network Alliance, "DLNA Networked Device Interoperability Guidelines," Oct. 2006. UPnP Forum, "MediaServer V1.0 and MediaRenderer V1.0," Jun. 2002. UPnP Forum, "UPnP Device Architecture 1.0," Jul. 2006. Wikipedia