| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a portable digital assistance by which a missing input pen can be found out immediately. SOLUTION: This pen input portable digital assistance that has at least the personal digital assistance main body and a cordless data input pen for inputting, by handwriting, characters to the portable digital assistance main body is constituted such that the portable digital assistance and the data input pen are individually provided with means for transmitting and receiving a specific signal, the specific signal is transmitted with the transmission means provided with the data input pen, the specific signal is received with the reception means provided with the portable digital assistance, the reception of the specific signal is confirmed with a signal detection means, a reception confirmation signal is transmitted with the transmission means, the reception confirmation signal transmitted from the portable digital assistance is received with the reception means provided with the data input pen, the reception of the reception confirmation signal is confirmed with a signal controlling means provided with the data input pen, and, if the reception confirmation signal is not confirmed with the signal controlling means of the data input pen, an annunciation signal is generated from the data input pen side.</p> |
