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http://dx.doi.org/10.5909/JEB.2011.16.4.657

Assessment of the Usability of Digital TV Remote Control Pointing Methods  

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)
Publication Information
Journal of Broadcast Engineering / v.16, no.4, 2011 , pp. 657-668 More about this Journal
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.
Keywords
Digital TV (DTV); Usability; Remote Control Unit (RCU); Pointing Devices; ISO 9241-Part;
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