Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1993-11-18
1994-09-13
McElheny, Jr., Donald E.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369116, G11B 700
Patent
active
053475038
ABSTRACT:
An optical information processing apparatus includes a light source for radiating a light beam onto an optical information recording medium. A first photosensor is provided for partially receiving the light beam emitted from the light source and generating an output, and a second photosensor is provided for receiving either a light beam reflected by the recording medium or a light beam transmitted through the recording medium and generating an output. A control circuit controls power of the light beam emitted from the light source using the output from the first photosensor, and a correction circuit automatically corrects linearity of the output of the first photosensor with respect to the power of the light beam emitted from the light source in accordance with the output from the second photosensor.
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.
Ando Hirotake
Baba Hisatoshi
Kato Tadashi
Koyama Osamu
Nakajima Hideo
Canon Kabushiki Kaisha
McElheny Jr. Donald E.
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