| 摘要 |
<p>An apparatus for reading optically-recorded cards, which reads through a line sensor (10) the data of sub-tracks Ts recorded optically on a card (1) in which a main track TM, which consists of a plurality of sub-tracks Ts parallel with each other, is formed in the lengthwise direction of the card substrate (1A), and in which each sub-track Ts consists of a plurality of optical dots. Address marks t corresponding to the sub-tracks Ts are formed along the edge of the main track TM of the card (1), and are detected by an optical detector (11). Mark detect signals are then counted by an address counter (12) to detect the position of the sub-track Ts. Relying upon the counted value of the address counter (12), relative motion is controlled in the direction of the main track among the line sensor (10), optical detector (11) and card (1). With this invention, it is possible to selectively read the data recorded in any desired sub-track Ts of the optically-recorded card (1).</p> |
