| Summary: | 碩士 === 國立臺北科技大學 === 創新設計研究所 === 99 === This research intended to improve channel switching operation that is the most frequently used function at a television remote controller. When surfing the channels, a pair of up/down keys (navigation key) are used on the television remote controller, while numeric keypad is used for the destination channel switching. In the pilot study, problems of using numeric keypad for channel switching were found, including error number operation and frequent shifting of vision focus between television screen and remote controller.
In order to improve the operation efficiency of channel switching, a pair of dedicated keys was utilized for fast channel switching. Two dedicated keys were set respectively near up/down keys (navigation key) and were design for the function of forward/backward 10 channels for every pushing down. A feasibility test was carried out to examine the dedicated keys’ operation efficiency and error rate against original numeric keypad. The results of experiment revealed that dedicated key operation performed less error rate than numeric keys did. Frequency of vision focus between television screen and remote controller was significantly reduced when using dedicated keys especially in the 40-60 age group. As a result, the proposed dedicated keys operation requires less cognitive effort which benefits older age group and all other users as well.
In addition, the concept of multi-layer interface was introduced to utilize a user friendly interface for both novice and expert users. The physical multi-layer interface of TV remote controller was design to hide most of infrequent used keys in the second layer, while 11 frequently used keys remained on the first layer.
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