Abstract: A projection keyboard for a portable communication device includes a main body having a HDMI input hole; a battery unit disposed in the main body; a connection module connected with the main body and electrically connected with the battery unit, the connection module communicating with an external portable communication device by means of a wireless or wired connection way; a micro projection device pivotally connected to a front central portion of the main body and electrically connected with the battery unit and the HDMI input hole; and a wireless AV receiver electrically connected with the battery unit and the micro projection device. The micro projection device projects the image data to a front screen or on the wall directly like a computer. The present invention has a simple structure and is small in size, without a traditional screen, so the cost is lowered greatly and can be used conveniently.

Abstract: A capacitive touch control pen is disclosed. The capacitive touch control pen includes a hollow conductive tube, having an open end and a closed end; a conductive touch control member, fastened at the open end of the conductive tube, one part of the conductive touch control member is exposed outside the conductive tube and the other part of the conductive touch control member is arranged inside the conductive tube; a circuit board, disposed at an inner wall of the conductive tube; and a conductive connection unit, electrically connected with the circuit board and the conductive tube to make the circuit board, the tube, the conductive connection unit, and the conductive touch control member become a circuit loop.

Abstract: A projection keyboard for a portable communication device includes a main body having a HDMI input hole; a battery unit disposed in the main body; a connection module connected with the main body and electrically connected with the battery unit, the connection module communicating with an external portable communication device by means of a wireless or wired connection way; a micro projection device pivotally connected to a front central portion of the main body and electrically connected with the battery unit and the HDMI input hole; and a wireless AV receiver electrically connected with the battery unit and the micro projection device. The micro projection device projects the image data to a front screen or on the wall directly like a computer. The present invention has a simple structure and is small in size, without a traditional screen, so the cost is lowered greatly and can be used conveniently.

Abstract: A wireless mouse signal transferring device having a wireless mouse, a wireless receiver, a computer mainframe, an antenna, a keyboard connected to a computer mainframe. The wireless receiver is hidden in a predetermined position of a keyboard and is connected with an antenna, the antenna is hidden in an edge of the keyboard; thereby, the antenna is near the wireless mouse, thereby, the space for locating the wireless mouse is saved and thus less power is required in signal transmission.

Abstract: A wireless mouse induction power supply comprises a wireless mouse and a mouse pad. The wireless mouse is installed with a first induction coil which is connected to a first capacitor of a power supply circuit in parallel as an oscillating circuit. The oscillating circuit is connected to a charging capacitor through a diode. A second coil is embedded in the mouse pad; the second coil being connected to a power wire. When power is inputted into the second coil in the mouse pad for generating electromagnetic wave, the electromagnetic wave is received by the first induction coil in the wireless mouse. The induction coil will generate an electromotive potential so as to oscillate with the first capacitor; then the potential will charge the capacitor through the diode. Then, power is outputted to a transmitter in an interior of the wireless mouse; thereby, the wireless mouse remotely controlling a computer.