智慧型手機應用程式：具方向性的無線遙控

Abstract

近年來由於智慧型手機(smartphone)興起，發展出許多整合服務的智慧型手機應用程式(smartphone application)。 其中有一項整合服務是以手機來當做遙控器(remote controller)使用－ 智慧型手機可透過電信網路或Wi-Fi網路來遙控家電。 為了在眾多家電用品當中，準確地遙控所選的目標家電，一套有邏輯的判定及選擇機制是不可或缺的。在 此論文中，我們提出了一個稱為Point-and-Control (PnC)的演算法，只要使用者將智慧型手機指向任一個目標家電，透過手機內建的電子羅盤功能(electronic compass) 及PnC的判定即可輕易地遙控所選家電。 我們設計出PnC演算法，並對它進行效能分析。 研究結果顯示，PnC可有效地且精準地選擇家電，達到遙控家電的功能。

Recently, smartphones have been used as remote controllers for home appliances through connectivity of mobile telecom network or Wi-Fi. To control several home appliances in a room, a mechanism is required for a smartphone to correctly select the target appliance. Through the built-in electronic compass function in the smartphone, we propose a scheme called {\it Point-and-Control} (PnC) that allows a user to select a home appliance by pointing the smartphone to that home appliance. In this thesis, we design the PnC and show the performance of this solution. Our study indicates that the PnC can effectively achieve the remote control function.