发明名称 |
Servo signal recording apparatus, information recording apparatus, and tracking servo method |
摘要 |
In the apparatus and method of the invention, a servo signal reproduction unit generates a PES from a servo signal reproduced from a magnetic tape, and a frequency conversion unit performs FFT processing of the PES to generate frequency component information. Then, a filter value generation unit generates filter values based on the frequency component information and writes these to a memory. When recording various data signals to the magnetic tape, the filter values are read from the memory and a control filter serving as a notch filter is incorporated into a feedback control for a tracking servo. This enables periodic and narrow-band noise to be removed from a PES, consequently reducing PESs. Accordingly, learning-type optimum notch filter control that allows a magnetic head to follow recording tracks at high speed and with high precision is possible even when the recording track width is reduced and the tape speed is increased. |
申请公布号 |
US8068308(B2) |
申请公布日期 |
2011.11.29 |
申请号 |
US20090476773 |
申请日期 |
2009.06.02 |
申请人 |
FUJITA MASAO;KAWAKAMI SHINJI;KAWAKITA TOSHIO;KUSE SADAMU;HITACHI MAXELL, LTD. |
发明人 |
FUJITA MASAO;KAWAKAMI SHINJI;KAWAKITA TOSHIO;KUSE SADAMU |
分类号 |
G11B5/584;G11B21/02 |
主分类号 |
G11B5/584 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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