Patent ID: 6728811
Filing Date: 2004-04-27
Classification: G06F,Y02D

Abstract:
A control device capable of connecting and disconnecting with an expansion device, comprising:a connection monitoring section to establish connection status of the expansion device to a connection status register when the expansion device is connected, and to output an interrupt signal based on the established connection status; a connection determination section to output a connection signal based on the interrupt signal and a predetermined condition; an operating instruction section to form close information to close an open/close control element to control signal transmission of electric circuits in the expansion device based on the connection signal and interrupt signal, and to output the close information; and an open/close section comprising an open/close control register to store control information of the open/close control element, wherein the operating instruction section establishes the close information to the open/close control register of the open/close section, and wherein the open/close section outputs the established close information to the connected expansion device.