发明申请
US20090273856A1 Timing insensitive method and apparatus for spectral analysis in a disk recording system
失效
磁盘记录系统中光谱分析的时序不灵敏的方法和装置
- 专利标题: Timing insensitive method and apparatus for spectral analysis in a disk recording system
- 专利标题(中): 磁盘记录系统中光谱分析的时序不灵敏的方法和装置
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申请号: US12150810申请日: 2008-04-30
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公开(公告)号: US20090273856A1公开(公告)日: 2009-11-05
- 发明人: Yawshing Tang , Carl Xiaodong Che , Na-Young Kim
- 申请人: Yawshing Tang , Carl Xiaodong Che , Na-Young Kim
- 申请人地址: KR Suwon City
- 专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人地址: KR Suwon City
- 主分类号: G11B5/09
- IPC分类号: G11B5/09
摘要:
A hard disk drive that includes a disk that contains at least one signal and a head that is coupled to the disk. The disk drive also contains a circuit that includes a data sampler that-generates a plurality of data samples from the signal, a harmonic sensor coupled to the data sampler and a spectral power accumulator coupled to the harmonic sensor. The harmonic sensor accumulates the data samples. The circuit includes a window generator that determines a window length of the data samples accumulated by the harmonic sensor. The spectral power accumulator accumulates the windows of sample data accumulated by the harmonic sensor. The sample data accumulated by the spectral power accumulator can be accessed by a processor that performs a spectral analysis of the data.