Effect of Control-Display Gain on Remote Pointing Performance
Hsu, Shang H.
|關鍵字:||人因工程;遙指;增量;人機介面;human factors;romote pointing;control-display gain;human-computer interface|
而定。速度C-D gain對遙指機制也有顯著的影響，速度C-D gain愈高會使第一副移動時間
Control-display gain of pointing devices is an important factor in determining the performance effectiveness. The control-display gain (C-D gain ) is usually defined as either the relationship between control displacement and display displacement (i.e., first order) or the relationship between control velocity and display velocity (i.e., second order). The purpose of this study is to investigate the effects of the velocity control-display gain on the performance of discrete remote pointing task based upon hand input device. Seventy-five students of National Chiao Tung University were randomly assigned to one 5 (velocity C-D gain)×3(remote distance) experimental situations to perform cursor positioning tasks by using a remote pointing device. The results showed that velocity C-D gain, movement amplitude, target width, and remote distance had a significant effect on task completion time. In addition, target width and remote distance also had a significant effect on selection error rates. High velocity C-D gain made tasks faster and less accurate. Moreover, the optimal level of velocity C-D gain depended on the characteristics of the task required. Velocity C-D gain also had a significant effect on mechanism of remote pointing. At last, the author offered suggestions for the remote pointing interface design at the end of the paper.
|Appears in Collections:||Thesis|