Pointing device using two linear sensors and fingerprints to generate displacement signals
 The invention relates to a pointing device using two linear sensors and fingerprints to generate displacement signals. The pointing device comprises a housing, a linear image input device having first and second linear sensors parallel to each other and installed inside the housing for sensing a linear image and generating corresponding first and second linear image signals, and an image processing circuit installed inside the housing and connected to the two linear sensors for receiving and processing the first and second linear image signals generated by the two linear sensors. When a picture passes by the image input device along a predetermined direction, each of the first and second linear sensors will generate a series of linear image signals, and the image processing circuit will record the two series of the linear image signals respectively, calculate the displacement of the picture according to the two series of linear image signals and generate a displacement signal according to the two series of linear image signals. 
Primax Electronics Ltd.
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Wen-Hsiung
Liu