Patent ID: 7852739
Filing Date: 2010-12-14
Classification: B82Y,G11B

Abstract:
1. A probe memory device, comprising: a recording medium having a square shaped recording area including a plurality of data columns disposed in a predetermined data direction, a first area and a second area provided, respectively, outside of any two opposing sides in the recording area, and a positioning pattern representing feedback information for carrying out positioning and provided in each of the first and second areas; a probe head array disposed in opposite to the recording medium and having a plurality of first robes disposed in matrix for recording, reproducing, and erasing information in the recording area, and a second probe for generating a second reproduction signal that indicates a position of the data columns from the positioning pattern of the first and second areas; and an actuator which moves a relative position between the recording medium and the probe head array, wherein the positioning pattern provided in the first area and the second area includes: a first pattern in which a plurality of protrusions having top portions are continuous, the first pattern being arranged in a track direction orthogonal to the data direction; and a second pattern in which a plurality of continuous protrusions similar to the first pattern are arranged and top portions are disposed at intermediate positions between the top portions of the protrusions in the first pattern.