System for creating, reading and writing on rotatable informatio

Details System for creating, reading and writing on rotatable informatio System for creating, reading and writing on rotatable informatio

1998-02-13

2000-07-11

Tran, Thang V.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4425, G11B 709

Patent

active

060883081

ABSTRACT:
A photodetector and a threshold detector are employed to determine from which side (left or right) of an embedded track light is being reflected from. This information is encoded in the light signal reflected from a rotatable storage medium by oscillatorily moving a laser beam back and forth across an edge of the embedded track. A waveform detector provides a signal, based on the output of the photodetector, which provides an indication of distance away from the edge of a subject track. The output of the threshold detector and waveform detector drive an up-down counter which thus associates a unique binary number with each information track.

REFERENCES:
patent: 3848095 (1974-11-01), Wohlmut et al.
patent: 3946367 (1976-03-01), Wohlmut et al.
patent: 4021714 (1977-05-01), Jones et al.
patent: 4074312 (1978-02-01), van Rosmalen
patent: 4100577 (1978-07-01), Naruse et al.
patent: 4190775 (1980-02-01), Sakurai et al.
patent: 4241423 (1980-12-01), Burke et al.
patent: 4271334 (1981-06-01), Yardy
patent: 4301445 (1981-11-01), Robinson
patent: 4337531 (1982-06-01), Willemsen
patent: 4352981 (1982-10-01), Sugiyama et al.
patent: 4358774 (1982-11-01), Wilkinson
patent: 4397010 (1983-08-01), Nabeshima
patent: 4445209 (1984-04-01), Mickleson et al.
patent: 4460977 (1984-07-01), Shimada et al.
patent: 4475179 (1984-10-01), Geyer
patent: 4481550 (1984-11-01), Miller et al.
patent: 4507763 (1985-03-01), Kato
patent: 4531206 (1985-07-01), Kimura
patent: 4700336 (1987-10-01), Yoshida et al.
patent: 4953151 (1990-08-01), Imanaka
patent: 4972397 (1990-11-01), Zurbrick et al.
patent: 5016233 (1991-05-01), Morimoto et al.
patent: 5022021 (1991-06-01), Ito
patent: 5029023 (1991-07-01), Bearden et al.
patent: 5031165 (1991-07-01), Fujita
patent: 5070496 (1991-12-01), Ogawa et al.
patent: 5077719 (1991-12-01), Yanagi et al.
patent: 5161040 (1992-11-01), Yokoyama et al.
patent: 5251198 (1993-10-01), Strickler
patent: 5386409 (1995-01-01), Yokota et al.
patent: 5408453 (1995-04-01), Holtslag et al.
patent: 5436880 (1995-07-01), Eastman et al.
patent: 5473587 (1995-12-01), Hamaguchi et al.
patent: 5495466 (1996-02-01), Dohmeier et al.
patent: 5506826 (1996-04-01), Kobayashi
patent: 5511059 (1996-04-01), Brazas, Jr.
patent: 5521895 (1996-05-01), Miura et al.
patent: 5617400 (1997-04-01), Fuji
patent: 5623466 (1997-04-01), Itonaga
patent: 5638350 (1997-06-01), Fuji
patent: 5663939 (1997-09-01), Kase
patent: 5677903 (1997-10-01), Holtslag et al.
patent: 5715157 (1998-02-01), Kuhn
patent: 5715218 (1998-02-01), Ikeda
patent: 5757743 (1998-05-01), DeCusatis et al.
patent: 5768221 (1998-06-01), Kasami et al.
patent: 5828639 (1998-10-01), Kobayashi et al.
patent: 5844871 (1998-12-01), Maezawa
patent: 5854781 (1998-12-01), Kurihara
patent: 5872723 (1999-02-01), DeCusatis et al.
patent: 5903537 (1999-05-01), Gage et al.

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