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Optical disc apparatus, method of controlling the same, and information storage medium

A technology for optical discs and media, which is applied in the field of information storage media and can solve problems such as time loss

Active Publication Date: 2015-01-07
SONY COMPUTER ENTERTAINMENT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a danger of loss of time

Method used

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  • Optical disc apparatus, method of controlling the same, and information storage medium
  • Optical disc apparatus, method of controlling the same, and information storage medium
  • Optical disc apparatus, method of controlling the same, and information storage medium

Examples

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Embodiment Construction

[0048] Hereinafter, exemplary embodiments of the present invention are described in detail with reference to the accompanying drawings.

[0049] [Hardware Configuration]

[0050] An optical disc device 1 according to an embodiment of the present invention reads information recorded on an optical disc medium. like figure 1 As shown, the optical disk device 1 includes: a medium supporting part 11, a spindle motor (spindle motor) 12, an optical pickup 13, a three-axis actuator (three-axis actuator) 14, a feed motor 15, a driving circuit 16, an RF amplifier 17. Servo signal processing unit 18, recording information processing unit 19, and control unit 20.

[0051] Information is read by the optical disc apparatus 1 from an optical disc medium M including a data recording layer in which information is recorded, and protective layers provided on both sides of the data recording layer for protecting the data recording layer. Hereinafter, the surface of the data recording layer is...

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Abstract

An optical disc apparatus controls a relative position of an optical pickup with respect to a surface of an optical disc medium according to an output signal output from the optical pickup according to information recorded on the optical disc medium to implement servo control for maintaining a state where the information is readable, acquires an evaluation value for information reading accuracy when the servo control is implemented, and calculates a set value of a parameter to be set for the implementation of the servo control based on evaluation values respectively acquired for at least three set values of the parameter while changing the set value of the parameter for the servo control. The optical disc apparatus determines the set value to be set for further acquiring the evaluation value according to the evaluation values acquired for at least two set values of the parameter.

Description

technical field [0001] The present invention relates to an optical disc device for reading information recorded on optical disc media such as CD, DVD, and Blu-ray Disc (trademark), a method of controlling the same, and an information storage medium. Background technique [0002] In recent years, various optical disc media have been used as information recording media. An optical disc device is used to read information recorded on such an optical disc medium. An optical disc device includes an optical pickup that irradiates an optical disc medium with light to detect reflected light from the optical disc medium. The optical disc device controls a drive system for relatively moving the optical pickup with respect to the surface of the optical disc medium to move the optical pickup to a position where information can be read. In this way, the optical disc device reads information from the optical disc medium. [0003] The optical disc medium may move slightly vertically due ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/09
Inventor 西形尚之古关哲久
Owner SONY COMPUTER ENTERTAINMENT INC
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