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Generation and Evaluation of Power Model for Mobile AMOLED Display Using RGB Color Space Partitioning Method Considering Power

전력을 고려한 RGB 색 공간 분할 기법 및 이를 활용한 AMOLED 디스플레이의 소모 전력 모델 생성 그리고 평가

  • 백두산 (아주대학교 전자공학과) ;
  • 최유림 (아주대학교 전자공학과) ;
  • 이병정 (서울시립대학교 컴퓨터과학부) ;
  • 이정원 (아주대학교 전자공학과)
  • Received : 2018.03.07
  • Accepted : 2018.03.27
  • Published : 2018.09.30

Abstract

The power model is needed to handle the power consumption of mobile AMOLED display at the software level. However, the existing studies to generate the power model have required the experimental environment and equipment for the power measurement activity. In addition, the combination of RGB values used for modeling was imprudent and small, so it was difficult to reflect the mutual influence between the RGB values into the model. To solve these problems, we propose an RGB color space partitioning method, which is used to prudently sample the combinations of the RGB values based on the color or the power. We also propose a process for generating a mapping table composed of . We analyzed the characteristics of the samples generated according to the proposed partitioning methods, taking into account the color and the power, and generated the mapping table for the AMOLED display. Furthermore, we confirmed the reusability of the mapping table by utilizing one mapping table multiple times in evaluating different power models. These mapping tables are provided to researchers and can be used to generate and evaluate power models without power measurement activities.

모바일 AMOLED 디스플레이의 소모 전력을 소프트웨어 수준에서 참조하기 위해서는 소모 전력에 대한 모델이 필요하다. 하지만, 전력 모델을 얻기 위한 기존 연구들은 전력 측정 활동을 위한 실험 환경 및 장비가 필수적으로 요구되었다. 또한, 모델링을 위해 사용된 RGB 값의 조합이 무분별하고, 매우 적어 RGB 값들 간의 상호 영향을 모델에 반영하기 어려웠다. 본 연구는 이러한 문제점을 해결하기 위해 RGB 색 공간분할 기법 및 으로 구성된 맵핑 테이블 제공 방법을 제안한다. 제안된 분할 기법을 통해 색과 함께 전력을 고려하며 RGB 조합들을 샘플링하고, 제안된 맵핑 테이블 제공 방법에 따라 샘플링된 RGB 조합들로 구성된 맵핑 테이블을 생성한다. 실험을 통해 색 차원과 전력 차원에서의 분할 기법에 따른 샘플들의 특징을 분석하였고, 이를 바탕으로 AMOLED 디스플레이에 대한 맵핑 테이블을 생성하였다. 더불어, 맵핑 테이블을 활용하여 각기 다른 4개의 전력 모델을 평가함으로써 맵핑 테이블의 재사용 가능성을 확인하였다. 이러한 맵핑 테이블은 연구자들에게 제공되어 전력 측정 활동 없이도 전력 모델을 생성하는데 활용될 수 있다.

Keywords

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