| 摘要 |
PROBLEM TO BE SOLVED: To provide a portable battery device enabling USB communication.SOLUTION: The portable battery device (2) includes: a first USB terminal (21) which can be connected to an electronic apparatus (1); and a second USB terminal (22) which can be connected to a USB device (4). The portable battery device (2) further includes USB selector switches (25A, 25B) and a control unit (23) capable of controlling a changeover operation of a signal path of the USB selector switches. The control unit controls the USB selector switches so as to form a signal path (B) between the control unit and the second USB terminal, a signal path (A) between the control unit and the first USB terminal, and a signal path (C) between the first USB terminal and the second USB terminal. Formation of the signal paths enables USB communication of the portable battery device. |
