JP2000306246A5 - - Google Patents

Description

Patent application title: Optical disc recording and reproducing apparatus and recording and reproducing method

[0001]
Field of the Invention
The present invention relates to an optical disc recording and reproducing apparatus for reading recorded information from an optical disc on which information is recorded on a disc-shaped recording medium and recording the information on the optical disc, and in particular, such an optical disc recording and reproducing apparatus comprises an optical disc alone and a cartridge. The present invention relates to an optical disc recording and reproducing apparatus and recording and reproducing method capable of determining the state and type of an insertion disc in the optical disc recording and reproducing apparatus corresponding to the recording and reproducing of the optical disc stored in the above.

Claims (8)

A rotation driving device of an optical disk, there is provided an optical disk recording and reproducing apparatus including a microcomputer that includes a plurality of kinds of laser optical system having different wavelengths, a pair objective lens, an optical pickup for recording and reproducing information for the optical disc, the drive controller ,
The access processing to be executed after the setup processing includes the steps of: setting the disk rotational speed to the maximum rotational speed set in the setup processing; detecting out-of-focus and out-of-tracking; and detecting whether the address could be reproduced. There is a step of detecting whether the optical pickup has reached the target address, and in the case of out-of-focus, out-of-tracking, address reproduction not possible and target address non-attainment, the equalizer characteristics of the reproduction signal are changed to each step and retry is performed. An optical disk recording and reproducing apparatus comprising a step of performing rezeroing processing if normal reproduction can not be performed even after the retry processing is performed . 2. The optical disk recording and reproducing apparatus according to claim 1, wherein the means for changing the equalizer characteristic into each step is a means for changing the step to lower the double speed after the step of increasing the equalizer boost amount . 3. The optical disc recording and reproducing apparatus according to claim 2, wherein the means for changing the equalizer characteristic into each step is a means for changing the equalizer cutoff frequency to a step of decreasing the double speed after the step of changing. 3. The optical disk recording and reproducing apparatus according to claim 2, wherein the means for changing the equalizer characteristic to each step is a means for changing the equalizer cutoff frequency after the step of increasing the equalizer boost amount and thereafter reducing the double speed to change it to the step. . The optical disk recording according to claim 1 , wherein the rezeroing process comprises the steps of moving the optical pickup to the innermost periphery with respect to the optical disk, drawing in the focus, and adjusting the amplitude of the focus error signal while performing the focus sweep operation. Playback device. An optical disk recording and reproducing apparatus comprising a rotational drive device of an optical disk, plural kinds of laser optical systems having different wavelengths, an objective lens, an optical pickup for recording and reproducing information on the optical disk, and a microcomputer including drive control.
The setup process performed immediately after the optical disk is inserted includes a step of determining the type of the inserted optical disk, a step of pulling in focus, a step of detecting the amount of eccentricity of the optical disk, and a maximum rotation of the optical disk corresponding to the amount of eccentricity. An optical disc recording and reproducing apparatus comprising the steps of setting a speed and pulling in tracking . A recording and reproducing method in an optical disk apparatus comprising a microcomputer for driving an optical disk, a plurality of laser optical systems having different wavelengths, an objective lens, an optical pickup for recording and reproducing information on the optical disk, and a drive control. ,
The access processing to be executed after the setup processing includes the steps of: setting the disk rotational speed to the maximum rotational speed set in the setup processing; detecting out-of-focus and out-of-tracking; and detecting whether the address could be reproduced. There is a step of detecting whether the optical pickup has reached the target address, and in the case of out-of-focus, out-of-tracking, address reproduction not possible and target address non-attainment, the equalizer characteristics of the reproduction signal are changed to each step and retry is performed. And an optical disc recording and reproducing method comprising the step of performing a rezeroing process if normal reproduction can not be performed even if the retrying process is performed. A recording and reproducing method in an optical disk apparatus comprising a microcomputer for driving an optical disk, a plurality of laser optical systems having different wavelengths, an objective lens, an optical pickup for recording and reproducing information on the optical disk, and a drive control. ,
  The setup process performed immediately after the optical disk is inserted includes a step of determining the type of the inserted optical disk, a step of pulling in focus, a step of detecting the amount of eccentricity of the optical disk, and a maximum rotation of the optical disk corresponding to the amount of eccentricity. An optical disc recording and reproducing method comprising the steps of setting a speed and pulling in tracking.