| 摘要 |
<p>PURPOSE:To prevent the loss of an unconnected coordinate input device which is separated from a computer device by an optional described distance by gener ating the sounds or beams through the computer device and the coordinate input device connected to each other via a transmitter-receiver. CONSTITUTION:The computer device 2 has transmitter-receiver 3 and a device 4 which emits the sounds or the beams built-in. A coordinate input device 1 also has the device 3 and the device 4 built-in. The device 4 contains either of the device 2 and 1. Then, the device 3 works when the power supply of the device 2 is turned off, and detects the distance between both devices 2 and 1. When a distance larger than an optional fixed level is set between both devices 2 and 1, the device 3 sends a signal to the device 4 and the device 1 emits the sounds or beams. Thus, the loss the device 1 can be prevented.</p> |
