| Summary: | 碩士 === 國立臺北科技大學 === 創新設計研究所 === 102 === Digital TV has become home entertainment center. However, to allow users of different ages to quickly get started with increasingly complex digital TV has become an issue. the analysis of existing audio-visual products interface and remote control devices revealed that the complexity of the user interface is hard to get started.
Apply real-life digital TV using scenarios for the new interface usability evaluation, using visual search and human-computer interfaces theory, This study proposes a stacked half-pie menu with a scrolling wheel remote control to simplify the operation of digital TV. Employing visual search theory, this study paired stacked half-pie menu with (1) stationary focus selection and (2) moving focus selection, and conducted usability tests.
Firstly, three different tasks were designed to evaluate both stationary focus and moving focus on screen menu operation of stacked half-pie menu. Secondly, SUS(System Usability Scale) and NASA-TLX(National Aeronautics And Space Administration Task Load Index) scale were submitted to evaluate satisfaction and mental-workload. Three main conclusions are as follows:
(1) Operating stacked half-pie menu on digital TV, users no longer need to switch their focus between television screen and the remote controller. This is especially can benefits aging population.
(2) &;quot;Moving focus&;quot; on screen menu operation delivered higher performance; subjects considered &;quot;moving focus&;quot; complied with their experience.
(3) &;quot;Stationary focus&;quot; on screen menu operation takes much time to complete the selection task and reported to increase mental workload.
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