发明名称 |
Disk clock system with up-sampler to generate frequency offset |
摘要 |
A system reads data from a magnetic storage media. A read head reads data from the magnetic storage media and produce an analog signal. A variable gain amplifier amplifies the analog signal. An offset adjust module substantially centers the amplified analog signal to a midscale. A Magneto Resistive Asymmetry (MRA) correction module MRA corrects the amplified analog signal. A Continuous Time Filter (CTF) compensation module processes the amplified analog signal. An Analog to Digital Converter (ADC) samples the amplified analog signal based upon a control signal to produce a digital signal. A Disk Lock Clock (DLC) system produces the control signal to the ADC. The control signal is representative of a frequency offset caused by at least one servo wedge rate error. A Finite Impulse Response (FIR) filter module filters the digital signal. A sequence detector processes the digital signal and detects a bit sequence from the digital signal.
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申请公布号 |
US7864464(B2) |
申请公布日期 |
2011.01.04 |
申请号 |
US20090648746 |
申请日期 |
2009.12.29 |
申请人 |
BROADCOM CORPORATION |
发明人 |
BLISS WILLIAM GENE;SOUVIGNIER THOMAS V. |
分类号 |
G11B5/02 |
主分类号 |
G11B5/02 |
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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