Optical disc recording/reproducing device

Optical disc recording/reproducing device

  • CN 101,303,863 A
  • Filed: 05/31/2005
  • Published: 11/12/2008
  • Est. Priority Date: 11/11/2004
  • Status: Active Application
First Claim
Patent Images

1. an optical disc recording/reproduction device is characterized by, and has:

  • Light picker, this light picker have with beam condenser on CD, form luminous point object lens, detect the photodetector of the folded light beam of sending from described CD;

    The actuator that described object lens are moved;

    Spherical aberration correction element with the spherical aberration of proofreading and correct described object lens;

    From the output signal of the photodetector of described light picker, generate module as the reproducing signal and the tracking error signal of data;

    Drive the spherical aberration correction element drives module of the spherical aberration correction element of described light picker;

    In addition, in the optical disc recording/reproduction device of the actuator driver module with the actuator that drives described light picker, described tracking error signal generating apparatus can generate described tracking error signal by the push-pull signal based on the method for recommending at least;

    And then optical disc recording/reproduction device also has;

    According to the tracking error signal that described push-pull signal generates, adjust first adjusting module of the focus deviation of the spherical aberration correction amount of spherical aberration correction element of described light picker and object lens;

    WithAfter described first adjusting module is to spherical aberration and focus deviation adjustment, given data are recorded on the described CD, again according to the reproducing signal of described recorded data, adjust second adjusting module of the focus deviation of the spherical aberration correction amount of spherical aberration correction element of described light picker and object lens.

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