At first glance, the mobile phone looks exactly like a conventional cell phone. On the side of the housing there is a swivel bracket that holds the projector unit.
The light source is a tiny semiconductor laser that emits monochrome light to project a real-time image of the display. Depending on the position of the bracket, the image can be projected onto a surface in front of the phone or onto a wall. The projector system can even be used to give presentations and slide shows for small groups.
The pen for writing and telephoning is kept in the side of the bracket and features a built-in microphone and speaker. The signals are transmitted via Bluetooth. A distance sensor recognizes when a user is holding the pen to his or her ear and automatically reduces the volume.
To write with the virtual keypad, the user simply “types” with the pen on the projected image. Sophisticated sensor technology recognizes the pen’s position in real time.
Read the complete story @ PhysOrg.com News
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