发明名称 |
Magnetic recording system. |
摘要 |
<p>A magnetic recording system includes a current- tapering circuit which gradually reduces the WRITE current in a magnetic recording head to zero over a time interval on the same order of magnitude as the characteristic relaxation time of the domain patterns in the magnetic recording head, rather than abruptly. Specific embodiments of the current-tapering circuit create a down-sloping ramp, a decaying exponential curve, and a high-frequency burst. The resultant magnetic recording system has reduced Barkhausen noise and reproducible READ performance as well as improved READ sensitivity following a WRITE operation. <IMAGE></p> |
申请公布号 |
EP0455438(A2) |
申请公布日期 |
1991.11.06 |
申请号 |
EP19910303831 |
申请日期 |
1991.04.26 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
KLAASSEN, KLAAS BEREND;VAN PEPPEN, JACOBUS CORNELIS LEONARDUS |
分类号 |
G11B5/09;G11B5/465;G11B5/55;G11B19/04 |
主分类号 |
G11B5/09 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|