| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a coordinate input device for precisely reading code symbols on a medium. SOLUTION: An image receiving part 106 obtains an image having passed lenses 104a and 104b, converts the obtained image to image data, and transmits the converted image data to a determining part 107. The determining part 107 receives the image data transmitted from the image receiving part 106, executes the operation based on the received image data, and transmits the result of the operation to a control part 108. The control part 108 receives the result of the operation obtained by the determining part 107 and transmits a control signal to a lens driving part 105 based on the received result of the operation. The lens driving part 105 receives the control signal transmitted from the control part 108, drives the lenses 104a and 104b based on the received control signal, and adjusts the focal points of the lenses 104a and 104b.</p> |
