CEA R4.3 WG 1 n Organized under CEA R4.3 Television Data Systems Subcommittee n Responsible for Digital Closed Caption Standards – EIA-708-B – CEB-8

Tasks n Task Group 1: Test Streams for DTV-CC n Task Group 2: EIA-708-B Implementation n Task Group 3: Standards Maintenance

Test Streams n A Brief explanation of our work

Requirements n Base-band video – Initially, 1080i, then 720p and so on. n Video Graphics – Standard Test Pattern – Printed Time Stamp – Descriptive Open Caption Box (WYSIWYSG) – Include Identification Title

Requirements n PSIP – Use Service Descriptors – Stuff EIT and ETT – Support 6 Services n Emphasis on Conformance – Test 128k byte buffer limit – Boundary Testing

Requirements n Distribution – CD-ROM n 4 Minutes and 20 second limit n Suite of Test Disks

Iteration 1 n Complete EIA-608 – CC1 and CC3 n Transcoded to EIA-708 – Service 1 and 2

Iteration 2 n Native EIA-708 – Service 1 through 6 – Prioritized Features Testing n Boundary Testing

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