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US 2006/0143638 A1Published application
Optical disk drive and information processing apparatus
AssigneeToshiba Samsung Storage Technology Corporation
InventorsMakoto Yasukawa, Takafumi Tanaka
Life of this patent
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Abstract
An optical disk drive is provided with an optical pickup and an optical sensor. The optical pickup is used for reading main information from an optical disk. The optical sensor is located in the range of R17 to R23 and used for reading sub information from the optical disk. The optical sensor is provided in relation to the center of a spindle motor used for rotating the optical disk and is located within 120° with respect to the radius that is 180° opposite to the radius along which the optical pickup is movable.
Claims6
An optical disk drive comprising:
- first read means, movable in a radial direction of a rotating optical disk, for reading main information in a first recording area formed in the optical disk;
- and
- second read means, having a fixed read center position which is away from a center of the optical disk by a distance in the range of radius R17 to radius R23, for reading sub information in a second recording area formed in the optical disk,
- the second read means being provided in relation to the center of the optical disk and being located within 120° with respect to a radius that is 180° opposite to a radius along which the first read means is movable.
1 more element
Dependencies are inferred from the claim text.