數位相框介面模式對使用者操作績效之影響

The Effect of Interface Mode on Users Performance in a Digital Photo Frame

許淑貞(Shu-Chen Hsu)

指導教授 ： 劉弘章

大同大學/設計學院/工業設計學系所/碩士(2008年)

摘要

由於數位相機及照相手機愈來愈普遍，影像多以數位化的方式去儲存或顯示，數位相框取而代之傳統相框，為了滿足使用者的需求，各家廠商除不斷地加強產品的功能，也很著重於使用者介面的設計開發。本研究透過現有產品與使用者需求調查歸納出數位相框軟硬體介面研究的議題，再者選出市售三款數位相框以放聲思考法的方式進行操作實驗，找出影響介面操作使用性的問題，並歸納出數位相框介面設計時需注意的重點，進一步將其應用在本研究的模擬介面實驗上。本實驗探討「功能呈現方式」與「選項選取方式」兩組自變數，運用2 X 2雙因子變異數分析法探討這兩組變數對任務操作時間、介面使用性主觀感受與工作負荷的影響。研究結果如下：
(1)在任務操作時間的分析結果顯示，在五項任務操作時，觸控式操作時間明顯比按鍵式更快；在任務二旋轉照片與任務四刪除照片時，捷徑式的操作時間明顯比選單式更快。
(2)在系統使用性尺度量表(SUS)的分析結果顯示，受測者對觸控式之使用感受評價明顯較好；且受測者對四組測試介面皆給予正面的主觀感受評價。
(3)在工作負荷指標量表(NASA-TLX)的分析結果顯示，除了在時間負荷上沒有顯著差異外，觸控式的工作負荷明顯比按鍵式更低；且除了按鍵式會產生身體負荷，受測者對四組測試介面皆不感到有其他工作負荷存在。

關鍵字

主觀感受 ； 任務操作時間 ； 介面 ； 數位相框 ； 工作負荷

並列摘要

Digital cameras and camera cell phones are getting more and more popular and the images are stored and displayed in digital formats. Therefore, digital photo frames (DPF) are replacing traditional photo frames. In order to fulfill users’ requirements, all manufacturers not only make continuous efforts to improve the functionality of DPF but also put much emphasis on the research and development of user interface designs. In the beginning of this study, the researcher came up with research questions of the software and hardware interfaces of DPF based on existing products and survey of users’ requirements. Then three digital photo frames were selected from the marketplace for experiment, where Thinking Aloud method was applied to find out the inefficiencies of the user interfaces. Then the researcher concluded the key points that need attention when DPF interfaces are being designed. The key points were applied in the experiments on the simulated interfaces. This study applied two independent variables: “Function Display Mode” and “Selection Mode”. It used “Two-way ANOVA” to analyze the impacts of the two independent variables on task operating time, subjective feelings for different user interfaces and task load. The findings are as follows:
(1)The findings of “Task Operating Time” are:
a.Touch Screen was faster than Physical Buttons.
b.Based on the results of task 2 (Rotating A Photo) and task 4 (Deleting A Photo), Shortcut Key was faster than Menu-based Interaction.
(2)The findings of “System Usability Scale” (SUS) show that subjects obviously had a higher preference for Touch Screen and positive subjective feelings toward all four tested user interfaces.
(3)The findings of the NASA-Task Load Index (NASA-TLX) show that the task load of Touch Screen was obviously lower than that of Physical Buttons except for temporal demand, which showed no big difference. In addition, subjects had no other task load from using any of the four tested interfaces except for physical demand from using Physical Buttons.

並列關鍵字

Task operating time ； Interface ； Digital Photo Frame ； Subjective feelings ； Task load

參考文獻

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