附註:Cover -- Acknowledgments -- Permissions -- Trademarks -- Table of contents -- Introduction -- Intended Audience -- Book Organization -- Versions -- 1 The Middleware Market -- Why Do We Need Open Standards? -- Driving Forces Behind Open Standard Middleware -- Standards in DTV -- Correcting the Fragmented ITV Market -- What Are DVB and CableLabs? -- The Digital Video Broadcasting Project -- DVB-MHP: The Multimedia Home Platform -- CableLabs -- OpenCable Applications Platform (OCAP) -- A History Lesson: The Background of MHP and OCAP -- The MHP Family Tree -- JavaTV: A Common Standard for DTV -- Harmonization: Globally Executable MHP -- The Difficult Part of Standardization -- Intellectual Property and Royalties -- Where Do We Go from Here? -- Open Versus Proprietary Middleware -- 2 An Introduction to Digital TV -- The Consumer Perspective -- Customizable TV -- Understanding DTV Services -- Producing DTV Content -- Elementary Streams -- Transport Streams -- The Multiplexing Process -- Carrying Transport Streams in the Network -- Energy Dispersal -- Error Correction -- Modulation -- Cable, Satellite, and Terrestrial Broadcasting -- Broadcasting Issues and Business Opportunities -- Subscriber Management and Scrambling -- Access Issues -- The Subscriber Management System -- The Return Channel: Technical and Commercial Considerations -- 3 Middleware Architecture -- MHP and OCAP Are Not Java -- They Are Not the Web, Either -- Working in the Broadcast World -- The Anatomy of an MHP/OCAP Receiver -- The Navigator -- Differences in OCAP -- A New Navigator: The Monitor Application -- Modules in the Execution Engine -- Architectural Issues for Implementers -- Choosing a Java VM -- Sun's JVM or a Clean-room Implementation? -- The Impact of the Java Community Process -- Portability -- Performance Issues -- 4 Applications and Application Management -- An Introduction to Xlets -- Xlet Basics -- Xlet Contexts -- Writing Your First Xlet -- Dos and Don'ts for Application Developers
摘要:For any digital TV developer or manager, the maze of standards and specifications related to MHP and OCAP is daunting-you have to patch together pieces from several standards to gather all the necessary knowledge you need to compete worldwide. The standards themselves can be confusing, and contain many inconsistencies and missing pieces. Interactive TV Standards provides a guide for actually deploying these technologies for a broadcaster or product and application developer. Understanding what the APIs do is essential for your job, but understanding how the AP.
