| Presentation | 2002/10/31 Improvement of Read Back Properties in HDD with PRML Signal Processing Method Xiaobing Liang, Dan Wei, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A series of micromagnetic models are utilized to study the recording performance in hard disk drives (HDD) at extremely high densities, including simulations of the 3D thin film write head field, the GMR read head, the thin film media and channel codes. By these models the read & write process in longitudinal magnetic recording media of HDD are analyzed. The (0, 4/4) encoder and the corresponding decoder are utilized to translate the user data into (0, 4/4) constrained codes, before the write process is performed. The write current is achieved from the constrained code in the NRZ format. The read back voltage is equalized to PR-IV signal and the viterbi detector is utilized to recover the data. In a medium of 10 nm grains, the recording density limits with PRML method are about 1000kfci, which is 1.5 times of those with PD method, indicating that PRML is an useful approach to improve the read back properties of HDD. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | PRML signal processing / HDD / read back properties |
| Paper # | MR 2002-47 |
| Date of Issue |
| Conference Information | |
| Committee | MR |
|---|---|
| Conference Date | 2002/10/31(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Magnetic Recording (MR) |
|---|---|
| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Improvement of Read Back Properties in HDD with PRML Signal Processing Method |
| Sub Title (in English) | |
| Keyword(1) | PRML signal processing |
| Keyword(2) | HDD |
| Keyword(3) | read back properties |
| 1st Author's Name | Xiaobing Liang |
| 1st Author's Affiliation | Lab of Advanced Materials, Dept. of Materials Science and Engineering, Tsinghua University() |
| 2nd Author's Name | Dan Wei |
| 2nd Author's Affiliation | Lab of Advanced Materials, Dept. of Materials Science and Engineering, Tsinghua University |
| Date | 2002/10/31 |
| Paper # | MR 2002-47 |
| Volume (vol) | vol.102 |
| Number (no) | 423 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |