High Density Optical Recording Media and Optical Pickup Apparatus For Reproducing The Media and Recording or Reproducing Apparatus Of The Media and Methods Thereof

摘要

The present invention relates to an optical pickup device and a recording or reproducing apparatus and reproducing method for an optical recording medium for reproducing a high density optical recording medium with it.; High-density optical recording medium and an optical pickup device and a recording or reproducing apparatus and reproducing method for an optical recording medium for reproducing it according to the invention the information is recorded in the track is at least alternately to two different track pitch of the structure, and the each other the optical recording medium has been that information to identify the different track pitch and the recording; Based on the track crossing direction with the optical pickup device to provide a super-resolution optical beam of the asymmetric; The side lobes of the asymmetric super-resolution optical beam to be placed the larger the track pitch of a wide width by controlling the light beam and focuses the light beam from a reproducing method and a light source for detecting a reproduction signal on the recording medium, the reflected light optical pick-up for receiving the beam; And a signal processing section for detecting and outputting processes the converted signal signal to the optical pickup, according to the signal outputted from the signal processing unit is composed of control unit for controlling the optical pickup, the signal processing section sinhojung detected by the optical pickup It said other information is detected, and the control unit to which to identify the track pitch is characterized by a recording or reproducing apparatus for an optical recording medium for controlling the optical pickup according to the detected information.; The optical recording medium of the present invention is that as well as having suitable cross-talk reduction in a high-density recording capacity, the reproducing method of the optical pickup device and optical recording media is possible to obtain the correct reproduction signal to effectively reduce cross talk.