Kye Systems Corporation

Jeffrey Lee

Po-Hsun Hsien

Kenny Chien

An apparatus is provided for the wireless capture of coordinate-shift information. The apparatus includes a pulse generator that generates a pulse signal and simultaneously distributes the pulse signal into a first signal along the first path and a second signal along the second path. The apparatus further includes a working area defined by a plurality of crossing X-axis signal lines and Y-axis signal lines, and at least one coil surrounding the working area for generating a magnetic field. The apparatus also includes a scanning circuit coupled to the working area, and a synchronic determination circuit coupled to the pulse generator and the scanning circuit for receiving the first and second signals, and for determining the time delay between the receipt of the first and second signals. The apparatus further includes a signal processing circuit coupled to the scanning circuit and the synchronic determination circuit. The first signal passes through the working area and the scanning circuit to the synchronic determination circuit, and contains coordinate shift information. The position indicator can include a resonance circuit that receives signals from the magnetic field, and then re-transmits resonance signals having different pulse widths to the working area.

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Panchiao, Taiwan

Jeffrey Lee