Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Patent
1992-11-04
1995-05-16
Epps, Georgia Y.
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
369 4414, 369 4428, 369 4435, G11B 700
Patent
active
054167566
ABSTRACT:
A lens actuating system for an optical disk drive has an objective lens movably mounted in a movable frame with orthogonal X-, Y-, and Z-axes. A seeking servo moves the frame in the X-direction. A tracking servo moves the objective lens in the X-direction. A focusing servo moves the objective lens in the Z-direction. An optoelectronic sensor detects the relative position of the objective lens and frame in the X-direction, so that the tracking servo can maintain a fixed relative position during track-seeking, or in the Z-direction, to establish a neutral point on the Z-axis for the focusing servo. Force applied by the focusing servo or tracking servo to move the objective lens in one direction can be opposed by an equal and opposite force applied to a driven mass, so that a net zero force is transmitted to the frame.
REFERENCES:
patent: Re33548 (1991-03-01), Kime
patent: 4032776 (1977-06-01), van Rosmalen
patent: 4387452 (1983-06-01), Bricot et al.
patent: 4425043 (1984-01-01), van Rosmalen
patent: 4641020 (1987-02-01), Iwai
patent: 4759005 (1988-07-01), Kasahara
patent: 4767187 (1988-08-01), Gijzen et al.
patent: 4769803 (1988-09-01), Yamamiya
patent: 4792935 (1988-11-01), Kime et al.
patent: 4796248 (1989-01-01), Ozaki et al.
patent: 4838649 (1989-06-01), Ichikawa et al.
patent: 4907098 (1990-03-01), Ohkoda et al.
patent: 4956833 (1990-09-01), Kokado et al.
patent: 5001694 (1991-03-01), Lee et al.
patent: 5018124 (1991-05-01), Ogasawara et al.
patent: 5078471 (1992-01-01), Takishima
patent: 5090001 (1992-02-01), Ito et al.
patent: 5103438 (1992-04-01), Masunaga et al.
patent: 5111339 (1992-05-01), Hagiwara
patent: 5132850 (1992-07-01), Hagiwara
patent: 5164936 (1992-11-01), Kagami
patent: 5168486 (1992-12-01), Yanagawa
patent: 5182738 (1993-01-01), Yoshikawa
patent: 5195074 (1993-03-01), Tanoshima et al.
patent: 5218597 (1993-06-01), Yabe
International Symposium on Optical Memory 1991, Oct. 1-4, 1991, Sapporo, Japan, Technical Digest.
Irie Mitsuru
Karaki Morihiro
Kobachi Hideaki
Takeshita Nobuo
Epps Georgia Y.
Hindi Nabil
Mitsubishi Denki & Kabushiki Kaisha
LandOfFree
Lens actuating system with improved frequency response for optic does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lens actuating system with improved frequency response for optic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lens actuating system with improved frequency response for optic will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-643535