Apparatus for reading a line marking

Details Apparatus for reading a line marking Apparatus for reading a line marking

G - Physics

06

K

352/53.7

G06K 9/58 (2006.01) B07C 5/34 (2006.01) G06K 7/016 (2006.01) G06K 7/10 (2006.01)

Patent

CA 1223959

Abstract Apparatus for reading a line marking The apparatus comprises a reading surface which is formed by a plurality of photo-diodes. Each photo-diode is connected to an input of an AND-gate. The AND-gates each have another input which receives pulses from a scanner which distributes pulses to the inputs of the AND-gates in turn. The AND-gates are actuated in turn and, if the associated photo-diode is illuminated by the image of a marking element passes a signal to a counter. A decoder connected to the counter produces a signal indicating how many of the photo-diodes are illuminated and, thus, the length of the marking element.

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