Optical pickup apparatus capable of reducing cross talk by adjacent tracks and a method therefor

An optical pickup apparatus for an optical disk, comprising:

• a light source which emits a first light beam;
• an optical arrangement which transmits the first light beam from the light source to the optical disk as a focused spot and transmits light reflected from the optical disk as a second light beam, the second light beam including first, second and third beam segments reflected respectively from first, second and third areas along a radial line of the optical disk;
• a detector which receives the second light beam and in response generates first, second and third electrical signals corresponding respectively to the first, second and third beam segments;
• and
• an operation unit which operates of the first, second and third electrical signals to provide an information signal with reduced cross talk, said operation unit comprising:
• a first adder which adds the first and third signals to provide a summed signal;
• a multiplier which multiplies the summed signal by a constant to provide a multiplied signal;
• and
• a second adder which adds the second signal and the multiplied summed signal to provide the information signal with reduced cross talk.

An optical pickup apparatus which reduces cross talk in an information signal caused by adjacent tracks of a recording medium of an optical disk, the optical pickup apparatus comprising:

• a light source which emits a first light beam;
• an optical arrangement which transmits the first light beam from the light source to the optical disk as a focused spot and transmits light reflected from the optical disk as a second light beam,
• a detector which divides the reflected light beam into a center portion and a side portion and generates a first signal corresponding to the center portion and a second signal corresponding to the side portion, the center portion and side portion corresponding respectively to light reflected from first and second areas along a radial line of the optical disk;
• and
• an operation unit which receives the first and second signals, adjusts the amplitude of one of the first and second signals, and adds the adjusted signal with the other of the first and second signals to provide the information signal of a desired track having reduced cross talk caused by a track adjacent to said desired track.