한국정보과학회논문지:시스템및이론 (Journal of KIISE:Computer Systems and Theory)

한국정보과학회 (Korean Institute of Information Scientists and Engineers)
권호 표지

지연 시간 및 화질 제약이 있는 비디오 응용을 위한 에너지 최적화 기법

An Energy Optimization Technique for Latency and Quality Constrained Video Applications

  • 임채석 (서울대학교 전기컴퓨터공학부) ;
  • 하순회 (서울대학교 컴퓨터공학부)
  • 발행 : 2004.10.01
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⟨ 이전 논문 다음 논문 ⟩

초록

이 논문은 지연 시간 및 화질 제약이 있는 비디오 응용을 위한 에너지 최적화 기법을 제안한다. 이는 두 가지 핵심 기법 - 프레임 생략 기법 및 버퍼링 기법 - 으로 구성되어있다. 버퍼링은 운영 체제 수준에서 유휴 시간 이용률을 증가시키고, 프레임 생략은 응용 수준에서 유휴 시간 자체를 증가시키며, 양쪽 모두 동적 전압 조절 기법의 효과를 향상시킨다. 이 논문에서는 제안한 기법을 적용하기 위해 H.263 부호기 응용을 사용한다. 실험에서는 제안한 기법이 주어진 지연 시간 및 화질 제약을 만족하면서 괄목할 만한 에너지 절감을 얻을 수 있음을 보인다.

This paper proposes an energy optimization technique for latency and quality constrained video applications. It consists of two key techniques: frame-skipping technique and buffering technique. While buffering increases the slack time utilization at the OS level. frame skipping Increases the slack time itself at the application level, and both enhance the effectiveness of the dynamic voltage scaling technique. We use an H.263 encoder application as a test vehicle to which the proposed technique is applied. Experiments demonstrate that the proposed technique achieves noticeable energy reduction satisfying the given latency and video quality constraints.

키워드

참고문헌

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