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Encoding of Closed Caption in a Video Using Matlab

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Abstract:
CLOSED CAPTION Decoder presents the integration of several IPs to produce a system-on-chip (SoC) for digital television STB compliant to the SBTVD standard. The digital television (DTV) transport stream is planned to accommodate NTSC &DTV caption services DTVCC. The project report describes how services are inserted into and transported within the bit stream and the challenges that must be overcome in order to provide properly format and corresponding captioning. These service transmission starts at the caption encoding head end feeding the DTV encoder and ends at the decoding hardware in the DTV receiver. Obstacle to be overcome include ensure system integration, minimize codec latency and maintain synchronization. Consciousness of these concerns is essential for engineers and management in the digital video industry. Besides, those systems are built from heterogeneous processing units designed to perform specific tasks in order to maximize the on the whole system efficiency.
Keywords: ATSC, CEA-708, DTVCC, Line 21, PSIP

References:

  1. Benson,Jerry Whitaker, Television Engineering Handbook,1992.
  2. CEA-708,Digital television closed caption(2000).
  3. Candemir Toklu, Shih-Ping Liou, Madirakshi Das, “VideoAbstract: A New Hybrid Approach to Video Summary Generation”, 2000 IEEE Int. Conf. on Multimedia and Expo. ICME2000. vol.3, pp.1333-6
  4. EIA-608, Recommended Practice for Line 2 1 Data Service, (September, 1994). EIA-608, Recommended Practice for Line 2 1 Data Service, (September, 1994).
  5. For an explanation of Program and System Information Protocol (PSIP), see ATSC A/65, PSIP for Terrestrial Broadcast and Cable (1997). For descriptions of Program Association ‘I able (PAT), Program Map Table (PMT) and Program Clock Reference (PCR), see ATSC N53, ATSC Digital TelevisionStandard (1 995).
  6. H. Zhang, S Zheng, and J Yuan, “A Personalized TV Guide System Compliant with MHP,” IEEE Trans. On Consumer Electronics, vol. 51, no. 2, pp. 731- 737, May 2005.