Transporting device for moving a reproducing head of an informat

Details Transporting device for moving a reproducing head of an informat Transporting device for moving a reproducing head of an informat

1998-12-23

1999-11-30

Young, W.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

G11B 700

Patent

active

059954647

ABSTRACT:
A reproducing head is moved by a moving stand along the diameter at a constant speed. At this time, an in-focus detecting circuit waits until the cancellation of the focus control. The time to the cancellation of the focus control is counted by a microprocessor. Based on the time, the microprocessor discriminates the radius of an information recorded disk.

REFERENCES:
patent: 4868805 (1989-09-01), Hanami et al.

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