Signal detection method of staggered two-dimensional bit-patterned media, recording medium and apparatus for performing the method

A non-transitory computer-readable recording medium having thereon a computer program for performing a signal detection method of staggered two-dimensional bit-patterned media in which a first plurality of pixels arranged at equal distances along down-track are arranged in a staggered manner with a second plurality of pixels arranged along adjacent down-track, wherein the first plurality of pixels and the second plurality of pixels are arranged in turn, the signal detection method of the staggered two-dimensional bit-patterned media comprising:

• a down-track detection step of detecting a horizontal signal through a horizontal direction (x) path along the down-track;
• a first cross-track detection step of detecting a first signal through a first vertical direction (z1) path that allows for passing through a cross-track plurality of pixels of the first plurality of pixels, wherein the cross-track plurality of pixels are arranged on a same line along a cross-track perpendicular to the down-track and a first vertical direction plurality of pixels of the second plurality of pixels arranged in a staggered manner toward the horizontal direction (x) path with respect to the cross-track;
• and
• a second cross-track detection step of detecting a second signal through a second vertical direction (z2) path that allows for passing through the cross-track plurality of pixels of the first plurality of pixels, wherein the cross-track plurality of pixels are arranged on the same line along the cross-track and a second vertical direction plurality of pixels of the second plurality of pixels arranged in a staggered manner toward an opposite path to the horizontal direction (x) path with respect to the cross-track.

A signal detection apparatus of staggered two-dimensional bit-patterned media in which a first plurality of pixels arranged at equal distances along down-track are arranged in a staggered manner with a second plurality of pixels arranged along adjacent down-track, wherein the first plurality of pixels and the second plurality of pixels are arranged in turn, the signal detection apparatus of the staggered two-dimensional bit-patterned media comprising:

• a processor and a memory;
• a down-track detector which detects a horizontal signal through a horizontal direction (x) path along the down-track;
• a first cross-track detector which detects a first signal through a first vertical direction (z1) path that allows for passing through a cross-track plurality of pixels of the first plurality of pixels, wherein the cross-track plurality of pixels are arranged on a same line along a cross-track perpendicular to the down-track and a first vertical direction plurality of pixels of the second plurality of pixels arranged in a staggered manner toward the horizontal direction (x) path with respect to the cross-track;
• and
• a second cross-track detector which detects a second signal through a second vertical direction (z2) path that allows for passing through the cross-track plurality of pixels of the first plurality of pixels, wherein the cross-track plurality of pixels are arranged on the same line along the cross-track and a second vertical direction plurality of pixels of the second plurality of pixels arranged in a staggered manner toward an opposite path to the horizontal direction (x) path with respect to the cross-track.