Device for detecting traveling speed of pickup

Details Device for detecting traveling speed of pickup Device for detecting traveling speed of pickup

1994-08-15

1996-06-18

Epps, Georgia Y.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 44320, 360 78040, G11B 700

Patent

active

055285686

ABSTRACT:
In a disk reproducing device of this invention for reading out data from a disk by means of a pickup element, a speed signal proportional to the speed of relative movement between the disk and the pickup element is created in a case where the pickup element is moved in the radial direction of the disk according to a high frequency signal (RF) read out from the disk and a tracking error signal (TE) derived from the high frequency signal (RF).

REFERENCES:
patent: 4788421 (1988-11-01), Ogawa et al.
patent: 4896310 (1990-01-01), Wacki

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