| 摘要 |
<p>A read/tracking system of an optical tape recorder for optically reading a data signal on light sensitive recording media (108) during a read function. A read beam is shaped to illuminate on the recording media a plurality of recorded data channels within a data track comprising the data signal. The read beam is modulated by data marks within the plurality of data channels to generate a reflected data modulated read beam. This reflected data modulated read beam is detected by detector (142) to recover the recorded data. The data image in the reflected data modulated read beam is detected to recover the recorded data. The data image in the reflected data modulated read beam is also used to generate an auto tracking control signal for electronics (156) which automatically adjusts the positioning of the objective lens (152) for proper positioning of the read beam on the recording media. The data track is, therefore, automatically tracked while the data track is being read during a read function.</p> |
