The present invention discloses a signal adaptor, which applies as a switching device between an endoscopic tube and at least one display device. A wireless module wirelessly connects with the endoscopic tube to receive video signals captured by a camera unit of the endoscopic tube also, the wireless module wirelessly connects with a first display device to transmit the analog video signals. A first electrical interface and a composite video connector connect with the first display device and the second display device respectively to transmit the analog video signals. An analog to digital converter converts the analog video signals to digital video signals. A second electrical interface connects with a third display device to transmit the digital video signals. Therefore, the digital video signals of the endoscopic tube can conveniently and variously be transmitted to different display devices.本發明係揭露一種訊號轉接裝置,係適用於內視管與至少一顯示裝置間之影像訊號轉接。此訊號轉接裝置包含無線傳輸模組無線連結內視管,以接收內視管之攝像單元所拍攝之影像訊號,並無線傳輸模組無線連結第一顯示裝置,以無線傳送類比影像訊號。第一電接口與視訊端子係各自對應電性連接到第一顯示裝置與第二顯示裝置,以傳送類比影像訊號。訊號轉換單元係將類比影像訊號轉換成數位影像訊號。第二電接口係電性連接到第三顯示裝置,以傳送數位影像訊號。如此,將使內視管內之數位影像訊號有更便捷且多元的外接顯示方式。
