Journal of Broadcast Engineering (방송공학회논문지)

The Korean Institute of Broadcast and Media Engineers (한국방송∙미디어공학회)
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Assessment of the Usability of Digital TV Remote Control Pointing Methods

Digital TV 리모컨의 포인팅 방식에 대한 사용성 평가

  • Cheong, Kyeong-Kyun (Dept. of Electronics and Computer Engineering, Hanyang University) ;
  • Kim, In-Soo (Division of Information Management Engineering, Korea University) ;
  • Park, Sung-Kwon (Dept. of Electronics and Computer Engineering, Hanyang University) ;
  • Park, Yong-Jin (Dept. of Electronics and Computer Engineering, Hanyang University)
  • 정경균 (한양대학교 융합전자공학부) ;
  • 김인수 (고려대학교 정보경영공학부) ;
  • 박승권 (한양대학교 융합전자공학부) ;
  • 박용진 (한양대학교 융합전자공학부)
  • Received : 2011.05.23
  • Accepted : 2011.06.24
  • Published : 2011.07.31
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Abstract

Along with the development of communication technology, DTV is gradually evolving into media that provide diverse services and information. This study is related with remote controls that control DTV interfaces and assessed the usability of remote pointing device. To this end, pointing devices using three different interaction methods that have been attempted recently by the industry were selected to conduct empirical experiments. The usability assessment was conducted centering on the existing directional task on straight tracks presented in ISO 9241-Part 9 and the steering tunnel task on curved tracks proposed in this study. The measurement variables included movement time, accuracy, throughput, subjective satisfaction and user behaviors. Based on the results of the assessment, in the case of movements on straight tracks, the GyroPoint method showed better implementing time but lower accuracy compared to the Hall Mouse and OFN methods while in the case of assessment on curved tracks, all of the GyroPoint method, Hall Mouse and OFN methods showed excellent results on both implementing time and accuracy. Besides, differences in efficiency and subjective satisfaction were shown among individual pointing devices. Based on these results, it is considered that individual pointing methods have different advantageous and disadvantageous characteristics. In this study, the usability of remote control pointing methods was assessed and diagnosed reflecting environments where DTVs are used through assessments considering the aspect of straight tracks along with curved tracks. Among others, this study is considered to be meaningful in that it provides assessment criteria and basic data for the development of remote controls suitable for the evolving DTV environments.

DTV는 통신기술의 발전과 더불어 다양한 서비스와 정보를 제공하는 매체로 점차 진화되고 있다. 본 연구는 DTV의 인터페이스를 제어하는 리모컨에 관한 연구로 Remote Pointing에 대한 사용성 평가를 수행하였다. 이를 위해 업계에서 최근 시도되고 있는 3개의 서로 다른 인터렉션 방식의 Pointing Device 선정하여 경험적 실험을 실시하였다. 사용성 평가는 기존의 ISO 9241-Part 9에 제시하고 있는 직선궤도상의 Directional Task와 본 연구에서 제안한 곡선궤도상의 Steering Tunnel Task를 중심으로 진행하였다. 측정변수로는 수행시간, 정확도, 효율성, 주관적 만족도, 그리고 사용자 행위를 포함하였다. 평가결과, 직선궤도 상의 움직임에서 GyroPoint 방식이 Hall Mouse와 OFN 방식에 비해 높은 수행시간을 보였으나 정확도는 낮게 나타났고, 곡선궤도상의 평가에서는 GyroPoint 방식 Hall Mouse와 OFN방식 수행시간과 정확도 모두 우수한 결과를 보였다. 그 밖의 효율성, 주관적 만족도는 각 Pointing Device에 따라 차이를 보였다. 이와 같은 결과 Pointing 방식에 따라 서로 장단점의 특징이 있는 것으로 분석된다. 본 연구에서는 직선궤도 측면과 더불어 곡선궤도를 함께 고려한 평가로 DTV 사용 환경을 반영한 사용성 진단과 평가가 이루어졌다. 무엇보다 진화되는 DTV 환경에 적합한 리모컨 개발을 위한 평가기준과 기초 데이터를 제공하는데 그 의미가 있을 것으로 기대한다.

Keywords

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