Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1994-04-12
1995-08-29
Psitos, Aristotelis
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 50, 369 53, G11B 700
Patent
active
054467110
ABSTRACT:
An apparatus for recording and/or reproducing information on and/or from a magneto-optical disk including an optical head for projecting a laser beam onto a magneto-optical disk and receiving the laser beam reflected by the disk, an up-down block arranged movably between a lower position and an upper position, an up-down motor for moving said up-down block up and down, a turntable for supporting the disk and a spindle motor secured to said up-down block and having a driving shaft coupled with said turntable for rotating the turntable, a position detecting device for detecting a position of said up-down block to derive a position signal when the up-down block is driven into the upper position, a rotation detecting device for detecting a rotation of said optical information record disk to derive a rotation signal when the optical information record disk is rotated at a predetermined revolving speed, and a control device for initiating a focus control for moving said objective lens and turntable relative to each other in accordance with said position signal and rotation signal.
REFERENCES:
patent: 4850695 (1989-07-01), Mikuriya et al.
patent: 4882723 (1989-11-01), Van Rosmalen
patent: 4918678 (1990-04-01), Dolby
Olympus Optical Co,. Ltd.
Psitos Aristotelis
Tran Thang V.
LandOfFree
Apparatus for recording and/or reproducing information and/or fr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for recording and/or reproducing information and/or fr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for recording and/or reproducing information and/or fr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1825050