CE html structure - vkevent


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some industry real cases implement CEA-2014(Web4CE) standard

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CE html structure - vkevent

  1. 1. CE-HTML structure &several CE real case &virtual keyboard event Chen Jing Fung (Grace @ III) May 3th, 2011
  2. 2. CEA -2014 & CE-HTMLCEA-2014 – Much more than an HTML browser & Web Server Version History: Version A: Hitachi home electronics (~2007/7/5) Version B: Philips Intellectual Property & standards (~2010/12/21) CE-HTML: XML UI Listing on some electric appliances Such as their capability profile exchangeReal case: Motorola (China) and Wistron ITS joint effort on: (2009) Interactive Video Delivery with CEA-2014 Remote UI solution Implementation: • PC • STB • Android phones 第2頁
  3. 3. Motorola: Interactive Video Delivery - Problems and SolutionProblems: Video delivery to different devices Display capabilities (e.g. resolution, overlay) A/V capabilities (e.g. MPEG2, MPEG4) User input (keyboard) Interaction with UI for video delivery Standardized A/V control interface C/S interaction: push vs. poll, in/out session notification Media and UI mobility for seamless experiences Standardized protocol requiredSolution: CEA2014 based Remote UI technology and standard Defines necessary mechanisms to allow a UI & content to be hosted, located (on server), and displayed on and controlled by remote devices. It provides a structured way of accessing CE friendly content (in CE-HTML). CEA-2014 is not just about UI, but interacting with UI for video delivery Superior to other standards such as RVU which transmit the UI in bit-maps 第3頁
  4. 4. Multi-device connection structure Share common UI presentation data(logo, color scheme…) Content File-based (same provider service creator) @ 2010 Germany Different devices university lab’s work 第4頁
  5. 5. Building of an HbbTV demonstrator DAE @ 2010 (May-June) French university lab’s 第5頁 work
  6. 6. CEA-2014: LG NetCast TV (2010) – Virtual Key Identifiers for TV Input key code property (keydown & keyup events)Virtual key constants mapping (Qwerty ) LG TV sets generate key events at every 108 ms = 9.26 times/sec 第6頁
  7. 7. CEA 2014 communcation The CEA 2014 framework lets a user interface be remotely displayed on--and controlled by--devices or control points other than the hosting device. The most well-known UI update technique, XMLHttpRequest, is difficult to adopt in an audiovisual home-network domain, according to Samsung. Samsung researchers apply a plug-in object, NotifSocket, for dynamic Web UI updates using a persistent TCP connection to support burst event notifications. NotifSocket can share event notifications whenever a UI server needs to inform the UI client of a change of state or event. CEA 2014 now stipulates that XMLHttpRequest be defined for simple UI updates over the Internet, while NotifSocket is mandated to transfer burst UI updates.http://www.eetimes.com/electronics-news/4068490/Home-net-papers-key-on-delivery-biometrics-item-1 第7頁
  8. 8. A case for NotifSockethttp://thedailyreviewer.com/dotnet/view/send-message-to-net-process-104567138 第8頁
  9. 9. RVU protocol The RVU protocol (RVU=DLNA+RUI) is a Application Layer protocol, is intended to allow an RVU enabled client, such as a TV, to receive a pixel accurate display of the User interface available on an RVU server.• The RVU protocol has beendeveloped with a focus onpassing broadcast videocoming from a Multichannelvideo programmingdistributor through aresidential gateway ordedicated media server toother consumer electronicdevices in the home.• However the protocol has amuch broader applicationsthat just this. http://en.wikipedia.org/wiki/RVU_protocol 第9頁
  10. 10. RVU alliance There are 5 founding members: Broadcom, Cisco Systems, DIRECTV, Samsung Electronics and Verizon. (2009/8) -> 2010/12 18 promoter members + 16 contributor members RVU can provide more than 19.1 million DIRECTV subscribers with the ability to watch live broadcast and stored content from their DVR on Samsung smart TVs, without the need for additional set-top boxes.The published aims of the RVU Alliance are toexpand the use of the RVU Protocol to enableusers to:Receive the same experience at every TVthrough the same look and feelProvide access to high-definition programmingfrom any TV in the homeRecord and playback HD programming from anyTV in the homeAccess to personal media content (e.g., videosand photos) from any TV in the homeInteract with weather, enhanced sports, andother interactive applications from any TV inthe homeAccess content available on more devices(including personal media players and PCs) 第 10 頁