Apparatus for monitoring a reading position for use in a disc pl

Details Apparatus for monitoring a reading position for use in a disc pl Apparatus for monitoring a reading position for use in a disc pl

1991-02-01

1992-07-14

Levy, Stuart S.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 32, 369 55, 369219, 369215, G11B 700, H04N 576

Patent

active

051309688

ABSTRACT:
An apparatus for monitoring a reading position for use in a disc player includes a positional information generating device for generating positional information of an information reading point in a direction of disc radius in accordance with the movement of the information reading point. The apparatus is configured to perform operations of detecting a condition that the information reading point is in one of at least lead-in and lead-out areas on the disc, storing each positional information by the positional information generating device at the time of the detection, comparing the positional information by the positional information generating device during the movement of the information reading point, and monitoring the position of the information reading point with respect to the lead-in and lead-out areas on the basis of a result of the comparison.

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