Abstract: A bridge controller connects to an integrated drive electronics (IDE) slave interface and a universal serial bus (USB) host or a USB on-the-go (OTG) controller. The bridge controller includes an IDE slave interface for connecting a first system, a USB interface for controlling a USB device, and a control unit electrically connected to the IDE slave interface and the USB interface for transforming IDE transmission data, commands, or status inputted from the IDE slave interface into USB transmission data, commands, or status, and outputting them to the USB interface, and transforming USB transmission data, commands, or status inputted from the USB interface into IDE transmission data, commands, or status, and outputting them to the IDE slave interface.

Abstract: A method and related hardware for changing operational modes of a Universal Serial Bus (USB) device includes having a detection circuit monitor the connection status of the device port or ports of the USB device. The detection circuit monitors each device port for the presence of a host computer system or a terminator. A control circuit utilizes the output from the detection circuit to determine the correct operational mode for the USB device. The control circuit initiates a USB function reset when changing the mode of the device, such that the host computers can detect the new mode.

Abstract: A portable peripheral apparatus with an embedded storage module. The apparatus is connected to a computer via a communication interface, such as a USB interface or an IEEE 1394 interface. The portable peripheral apparatus includes a main device and an embedded storage module. The embedded storage module connects to the computer via the communication interface and has a storage device. The storage device stores peripheral data. If the storage device is a rewritable memory, then when receiving a specific instruction from the computer, the embedded storage module receives and updates the peripheral data stored in the storage device.