In a linear image sensing device with image matching function, a linear
sensors array senses a finger, which is moving over it, to obtain
fragment image analog signals, which are amplified, by a programmable
gain amplifier, into amplified signals. An analog-to-digital converter
sequentially converts the amplified signals into digital image signals.
An image matching module sequentially receives and processes adjacent two
of the digital image signals, and outputs continuous non-overlapped
fragment images through an input/output interface. A control logic
controls operations and communications of the above-mentioned components.
A terminal system receives the non-overlapped fragment images and
assembles the non-overlapped fragment images into a complete fingerprint
image in a manner of stacking the images side by side.