Input device and control method thereof

The present disclosure provides an input apparatus and a control method thereof. The control method comprises the following steps: acquiring current angle data output by an absolute encoder according to a target phase of at least one signal output by a relative encoder; acquiring a current position number corresponding to the current angle data according to the current angle data; calculating a serial number difference value according to the current position serial number and the previous position serial number; and outputting the serial number difference value. 本公开内容提供一种输入装置及其控制方法。该控制方法包括下列步骤：根据相对型编码器所输出的至少一信号的目标相位，获取绝对型编码器所输出的当前角度数据；根据该当前角度数据，获取对应于该当前角度数据的当前位置编号；根据该当前位置编号与先前位置编号，计算编号差值；以及输出该编号差值。