TV Technology - January 7, 2009 - (Page 13)

NEWS Standard CONTINUED FROM PAGE 12 as a Candidate Standard. The Open Mobile Video Coalition (OMVC) has announced plans to conduct field trials of the ATSC Mobile DTV system and the Consumer Electronics Association has launched a complimentary special interest group for manufacturers interested in building products to the Candidate Standard. DOCUMENTATION tics defines the AVC and SVC Video System in the ATSC Mobile DTV system. Additional elements covered in this Part included closed captioning (CEA 708) and Active Format Description (AFD). Part 8—Audio System Characteristics defines the HE-AAC v2 Audio System in the ATSC Mobile DTV system. An additional Part focusing on con- tent protection is planned for later release. While the basic capability for sending files is defined in Part 3, it is very general and broad. A constrained set of interoperability points is being defined in a separate ATSC activity (in TSG S/13, the Specialist Group on Data Broadcasting) where non-realtime file delivery requirements are being documented for use in both the ATSC Mobile DTV system and the current DTV (8-VSB) system. The ATSC Mobile DTV Candidate Standard document set can be downloaded from the Candidate Standard page on the ATSC Web site: www.atsc.org. Jerry Whitaker is vice president of standards development for the ATSC. You can reach him via TV Technology. In a tip of the hat to the core ATSC DTV Standard—document A/53—the final ATSC Mobile DTV standard will be known as A/153. Like A/53, A/153 is modular in concept, with the specifications for each of the modules contained separate Parts, (see Fig. 1). The individual Parts of A/153 are as follows: Part 1—Mobile/Handheld Digital Television System describes the overall ATSC Mobile DTV system and explains the organization of the standard. It also describes the explicit signaling requirements that are implemented by data structures throughout the other Parts. Part 2—RF/Transmission System Characteristics describes how the data is processed and placed into the VSB frame. Major elements include the Reed-Solomon (RS) Frame, a Transmission Parameter Channel (TPC), and a Fast Information Channel (FIC). Part 3—Service Multiplex and Transport Subsystem Characteristics covers the service multiplex and transport subsystem, which comprises several layers in the stack. Major elements include Internet Protocol (v4), UniDirectional Protocol (UDP), Signaling Channel Service, FLUTE over Asynchronous Layered Coding (ALC)/ Layered Coding Transport (LCT), Network Time Protocol (NTP) time service, and Real Time Protocol (RTP)/ Real Time Transport Control Protocol (RTCP). Part 4—Announcement covers the Part where services can optionally be announced using a Service Guide. The guide specified in Part 4 is based on an Open Mobile Alliance (OMA) broadcast (BCAST) Service Guide, with constraints and extensions. Part 5—Application Framework defines the Part which enables the broadcaster of the audio-visual service to author and insert supplemental content to define and control various additional elements of the Rich Media Environment. Part 6—Service Protection refers to the protection of content, either files or streams, during delivery to a receiver. Major elements include the Right Issue Object and Short-Term Key Message (STKM). Part 7—Video System Characteris- MORE or LESS ALL THE GOOD THINGS IN LIFE MORE Features MORE Reliable LESS EXPENSIVE! Artisan An audio console for On Air, Trucks and now Edit Suites! The Artisan features: • Multiple frame sizes with drop-in modules for easy customization of the control surface • Two master and eight sub mix busses • 4 Aux busses • All channels can be mono, stereo or 5.1 • Flexible monitor controls including easy selection of mix minus outputs and talkback destinations • Frame delay and blend controls at every fader • Now interfaces directly with EDLs for edit room operations Console Router Systems Logitek Electronic Systems 5622 Edgemoor Drive Houston, TX 77081 713.664.4470 / 800.231.5870 CALL 800-231-5870 FOR AN ON-SITE DEMO! www.logitekaudio.com ©2007 Logitek Electonic Systems, Inc. www.tvtechnology.com • TV Technology • January 7, 2009 13 http://www.atsc.org http://www.logitekaudio.com http://www.logitekaudio.com http://www.tvtechnology.com

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TV Technology - January 7, 2009 NFL Enters a New Dimension Mobile DTV Looms Large in 2009 Contents A ‘Flexible Framework’ Doing More With Less ‘X’tra-Streamlined Finish Line in Sight for BAS Transition Ahead of the Relocation Curve DTV Transition Survival Guide ENG and the Lines of Communication DTV Transition Survival Guide Who Do We Really Work For? Obama to Expand Internet Access The Wizard Takes a Holiday The Solid-State Disk Revival To Light the Ear... or Not Hulu Gets It Right—the First Time User Reports—Video Servers & Recording/Controllers Reference Guide Product Showcase Classifieds Marketplace TV Tech Business

TV Technology - January 7, 2009

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