Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1995-01-18
1996-05-14
Young, W. R.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 4434, 369 4435, 369 54, G11B 709
Patent
active
055174752
ABSTRACT:
An optical information processing apparatus includes an optical head for irradiating a light beam onto an optical recording medium, an objective lens, mounted on the optical head, for condensing the light beam onto the recording medium, a photodetector for receiving a light beam from the recording medium and for generating a tracking error signal indicative of a positional deviation between a light beam irradiated position and a track, a tracking actuator for moving the objective lens in a direction intersecting tracks of the recording medium, a tracking controller for driving the tracking actuator in accordance with the tracking error signal so as to correct the positional deviation, a position detector for detecting a relative position of the objective lens with respect to the optical head in the direction intersecting the tracks, a measuring device for measuring a relationship between an offset of the tracking error signal and a position of the objective lens from the tracking error signal and an output of the position detector, a memory for storing the relationship measured by the measuring device and a correction device for correcting the offset of the tracking error signal in accordance with the stored relationship, in response to the position detector output signal.
REFERENCES:
patent: 4051329 (1977-09-01), Blondet et al.
patent: 4093961 (1978-06-01), Kanamaru
patent: 4162398 (1979-07-01), Kayanuma
patent: 4363116 (1982-12-01), Kleuters et al.
patent: 4549190 (1985-10-01), Ohara
patent: 4631712 (1986-12-01), Matsubayashi et al.
patent: 4698797 (1987-10-01), Komatsu
patent: 4707817 (1987-11-01), Yoshio
patent: 4853917 (1989-08-01), Koyama et al.
patent: 5039202 (1991-08-01), Koyama et al.
patent: 5067117 (1991-11-01), Shimizu et al.
patent: 5121374 (1992-06-01), Barton et al.
patent: 5197058 (1993-03-01), Bell, Jr. et al.
patent: 5228018 (1993-07-01), Rokutan
patent: 5260923 (1993-11-01), Baba
patent: 5343454 (1994-08-01), Watanabe et al.
Ando Hirotake
Baba Hisatoshi
Kato Tadashi
Koyama Osamu
Nakajima Hideo
Canon Kabushiki Kaisha
Young W. R.
LandOfFree
Optical information processing apparatus in which the offset of does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical information processing apparatus in which the offset of , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical information processing apparatus in which the offset of will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1902059