| 发明名称 | Determination of reader to writer crosstrack offset via a magnetic disk | ||
| 摘要 | A pattern is written to only a portion of a test track of a magnetic disk. The pattern written to the portion of the test track is read using a read head. A cross-track offset between the read head and a write head is determined at a position on a disk based on reading the pattern. | ||
| 申请公布号 | US9093091(B1) | 申请公布日期 | 2015.07.28 |
| 申请号 | US201414492876 | 申请日期 | 2014.09.22 |
| 申请人 | SEAGATE TECHNOLOGY LLC | 发明人 | Chu Alfredo Sam;Chow Siew Kin |
| 分类号 | G11B11/00;G11B5/48;G11B5/31;G11B5/60;G11B5/012;G11B13/08;G11B5/00 | 主分类号 | G11B11/00 |
| 代理机构 | Hollingsworth Davis, LLC | 代理人 | Hollingsworth Davis, LLC |
| 主权项 | 1. A method comprising: writing a pattern to only a portion of a test track of a magnetic disk, the magnetic disk comprising a heat-assisted magnetic recording (HAMR) medium, wherein writing the pattern to only the portion of the test track reduces a duty cycle of a laser and near-field-transducer (NFT) during the writing; reading the pattern written to the portion of the test track using a read head; and determining a cross-track offset between the read head and a write head at a position on a disk based on reading the pattern. | ||
| 地址 | CUPERTINO CA US | ||