发明授权
- 专利标题: Thermal asperity compensation in perpendicular recording
- 专利标题(中): 垂直记录中的热凹凸补偿
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申请号: US10754325申请日: 2004-01-09
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公开(公告)号: US07286311B1公开(公告)日: 2007-10-23
- 发明人: Mats Oberg , Pantas Sutardja , Runsheng He
- 申请人: Mats Oberg , Pantas Sutardja , Runsheng He
- 申请人地址: BM Hamilton
- 专利权人: Marvell International Ltd.
- 当前专利权人: Marvell International Ltd.
- 当前专利权人地址: BM Hamilton
- 主分类号: G11B5/02
- IPC分类号: G11B5/02
摘要:
A data detection circuit includes a transient detector that senses transient events in data. A first data detector path applies a first equalization target to generate a first bit stream from the data. A second data detector path applies a second equalization target to generate a second bit stream from the data. A baseline correction circuit generates a baseline correction signal using the first bit stream when the transient detector does not sense the transient events and the second bit stream when the transient detector senses the transient events. The first equalization target is a non-DC free equalization target and the second equalization target is a DC-free equalization target. When transients are detected during a sector, the detection circuit continues using the DC-free equalization target until the sector ends.
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