DETACHABLE DEVICE, CONTROL CIRCUIT, CONTROL CIRCUIT FIRMWARE PROGRAM, INFORMATION PROCESSING METHOD AND CIRCUIT DESIGN PATTERN IN CONTROL CIRCUIT, AND LOG-IN METHOD

摘要

The present invention relates to a compact removable device that automatically executes or installs programs. The device includes a male connector 15, a control unit 30, and a flash memory 40 as its main storage, and USB port 25 (female connector) for connecting another peripheral device (herein, a digital camera 5). Moreover, the control unit 30 has a hub division function and a recognition control function. The hub division function sets up all or a part of the flash memory 40 as a first unit device and the other peripheral device as a second unit device and allocates data exchange with the computer to each of these unit devices. Upon connection to the USB port, the recognition control function first sends a signal simulating a CD-ROM on account of the first unit device to the computer 1 and then, at a specified timing, sends the computer a specified signal used for accepting recognition on account of the digital camera 5.