本研究介紹我們所提出的一種新型游標控制方式 -氣球游標（Balloon Cursor），
並將其應用在小螢幕裝置遠端桌面操控個人電腦的場合中。一般來說，使用小螢
幕裝置遠端桌面操控個人電腦有兩種游標控制方式：一種是觸控操作，另一種則
是使用虛擬觸控板模式（Touchpad Mode）。不論是哪種方式，最常見的問題是無
法精確點選，或花了很多時間對準欲點選的目標物，增加使用者的不便與挫折感。

本研究主要改良自 Grossman 等學者們所提出的氣泡游標（Bubble Cursor）。
其原理是在一定距離內偵測最靠近游標的元件，將該元件以紅色橢圓形框起，並
以一線段連接游標與該元件，讓使用者不須將游標移至目標物上，即可進行控制。
根據我們的實驗結果，氣球游標可以改善小螢幕裝置遠端桌面操控電腦場合中使
用觸控操作的錯誤率整體達 86.67%，以及改善使用虛擬觸控板的完成時間平均達
14.97%，因此，氣球游標的控制方式確實可以改善小螢幕裝置遠端桌面操控電腦
的效率。

A new cursor control mode called Balloon Cursor is proposed in this research. This control mode is applied on small screen devices through remote desktop. Generally, there are two methods for controlling mouse cursor on remote desktop using small screen devices: touch operation and virtual touchpad. However, both methods have common problems: unprecise, time consuming, inconvenience, and frustrating.

This research is designed to improve Bubble Cursor technique conducted by Gross-
man. Balloon Cursor technique determines a target which is nearest to current cursor position, encircles it with red color, and connects it to the cursor using line. Thus, the users do not have to locate the cursor exactly over the target to control it. According to our experimental results, Balloon Cursor improves remote desktop control experience on small screen device. Specifically, Balloon Cursor decreases error rate by 86.67% on touch operation, and reduces task completion time by 14.97% on virtual touchpad. Therefore, the proposed Balloon Cursor can improve performance of remote desktop control for small screen devices.

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