| 摘要 |
A cordless digitizer with a cordless cursor/pen having a power supply of the battery type and comprising a winding-type transducer coil (11,12), a tablet with a winding-type sensor winding coil (21) provided parallelly on or under a plurality of conductive loops (22,23), a thin-filmed key-pad, and a signal-processing circuit (31) connected to the tablet to obtain the key-in state and the location of the cursor/pen. The cordless digitizer further comprises a touch control switch which can automatically switch the power on or off according to whether or not the user's hand is touching the contact points of the touch control switch for extending the battery life when the cordless cursor/pen is not in use (see Figure 4).
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