| 20110063140 | Portable Electronic Device and External Keyboard Thereof - The present invention relates to a portable electronic device and an external keyboard thereof. The portable electronic device comprises a first port comprising a circular earphone plug and a keyboard plug. The external keyboard comprises a main body, a keyboard array and a second port. The keyboard array is disposed on the main body and comprises a plurality of scan signal lines. The second port is electrically coupled to the scan signal lines of the keyboard array, and is capable of inserting into the first port of the portable electronic device so as to electrically couple to the keyboard plug. Therefore, the external keyboard can be connected to an earphone jack in a plug-and-play fashion without necessarity to add a new port such that the external keyboard is convenient to use and carry and can be freely rotated in any angle. | 03-17-2011 |
