disclosed is an optical disc drive sharing switching device , method and associated application system . the optical disc drive sharing switching device integrates a personal computer and an optical disc player together inside an information - processing appliance . the personal computer and the optical disc player share the use of an optical disc drive . the user is free to switch connections between the personal computer and the optical disc player with the optical disc drive . the device uses a simple switching program and the computer functions normally even if the optical disc drive is not under its control .