| 摘要 |
<p>PROBLEM TO BE SOLVED: To automatically switch an incorporated pointing device and an external pointing device so as to improve operability. SOLUTION: A pointing device control part 9 is provided with a pointing device switch control function for monitoring the output states of the incorporated pointing device 4 and the external pointing device 13, preferentially managing the pointing device which outputs data earlier and inhibiting the output of the other pointing device. When the continuation time of output-off, when the effective pointing device is not operated, reaches reference time, the output inhibition of the other device is released and any pointing devices can be operated. The pointing device which executes an operation earlier is set to be effective. The arbitrary pointing device can alternately be used without executing a special switch operation.</p> |
