发明授权
US07830633B2 Amplitude level controller for head IC, read circuit and media storage device
失效
头IC，读取电路和媒体存储设备的幅度电平控制器
- 专利标题： Amplitude level controller for head IC, read circuit and media storage device
- 专利标题（中）： 头IC，读取电路和媒体存储设备的幅度电平控制器
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申请号： US12199329申请日： 2008-08-27
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公开(公告)号： US07830633B2公开(公告)日： 2010-11-09
- 发明人: Hajime Miura
- 申请人： Hajime Miura
- 申请人地址： JP Tokyo
- 专利权人： Toshiba Storage Device Corporation
- 当前专利权人： Toshiba Storage Device Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Greer, Burns & Crain, Ltd.
- 优先权： JP2007-309679 20071130
- 主分类号： G11B5/02
- IPC分类号： G11B5/02 ; G11B5/09
摘要：
A head IC adjusts an amplitude level of a read signal of a head and outputs to a read channel having an AGC amplifier, includes an AGC amplifier. The AGC amplifier has a feedback loop control type first amplifier and a feed-forward control type second amplifier. The precision of control with respect to a target value is improved, and an AGC amplifier with fast response can be configured. Further, increases in the AGC pull-in type can be prevented, stability can be assured, and erroneous AGC judgments can be prevented.
公开/授权文献
- US20090141386A1 HEAD IC, READ CIRCUIT AND MEDIA STORAGE DEVICE 公开/授权日：2009-06-04
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