한국방송∙미디어공학회:학술대회논문집 (Proceedings of the Korean Society of Broadcast Engineers Conference)

한국방송∙미디어공학회 (The Korean Institute of Broadcast and Media Engineers)
권호 표지

실시간처리 운영체계 환경에서 Hybrid 방식을 이용한 디지털 DBS 위성수신기 성능개선

Performance Enhancement of a DBS receiver using Hybrid Approaches in a Real-Time OS Environment

  • 성영락 (국민대학교 전기전자공학부) ;
  • 정경훈 (국민대학교 전기전자공학부) ;
  • 강동욱 (국민대학교 전기전자공학부) ;
  • 김기두 (국민대학교 전기전자공학부) ;
  • 김성훈 (한국전자통신연구원(ETRI) 디지털방송연구단 방송시스템 연구그룹)
  • Seong, Yeong-Rak (Department of Electronic & Electrical Engineering, Kookmin University) ;
  • Jung, Kyeong-Hoon (Department of Electronic & Electrical Engineering, Kookmin University) ;
  • Kang, Dong-Wook (Department of Electronic & Electrical Engineering, Kookmin University) ;
  • Kim, Ki-Doo (Department of Electronic & Electrical Engineering, Kookmin University) ;
  • Kim, Sung-Hoon (Digital Broadcasting Research Division, Broadcasting System Dept., ETRI)
  • 발행 : 2005.11.05
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초록

A Digital Broadcasting Satellite (DBS) receiver converts digital A/V streams received from a satellite to analog NTSC A,/V signals in real-time. Multi-tasking is an efficient way to improve the utilization of the processor core in real-time applications. In this paper, we propose a hybrid approach with a balanced trade-off between hardware kernel and multi-tasking programming to increase a system throughput. First, the schedulability of the critical hard real-time tass in the DBS receiver is verified by using a simple feasibility test. Then. several soft real-time tasks are thoughtfully programmed to satisfy functional requirements of the system.

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