会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明授权
    • Characterizing head parameters of a disk drive by evaluating track profile of an overwritten track
    • 通过评估覆盖轨道的轨道轮廓来表征磁盘驱动器的磁头参数
    • US08717695B1
    • 2014-05-06
    • US13408921
    • 2012-02-29
    • Enhao LinShaoping Li
    • Enhao LinShaoping Li
    • G11B27/10
    • G11B5/455
    • A disk drive is disclosed comprising a disk comprising a plurality of tracks, and a head actuated over the disk. The head is positioned over a track while writing a first frequency pattern substantially centered on the track at a first frequency. After writing the first frequency pattern, a second frequency pattern is written substantially centered on the track at a second frequency, wherein the second frequency pattern is written over the first frequency pattern. After writing the second frequency pattern over the first frequency pattern, the head is scanned across the track while reading the disk to generate a read signal. A first frequency component is extracted from the read signal representing the first frequency.
    • 公开了一种磁盘驱动器,包括包括多个轨道的盘,以及在盘上致动的头。 当以第一频率写入基本上以轨道为中心的第一频率图案时,头部位于轨道上方。 在写入第一频率模式之后,第二频率模式以第二频率基本上以轨道为中心写入,其中第二频率模式被写入第一频率模式。 在第一频率图案上写入第二频率图案之后,在读取磁盘的同时扫描磁头以产生读取信号。 从表示第一频率的读取信号中提取第一频率分量。