发明名称 |
Resonance-frequency measuring method determining a resonance frequency by counting the number of off-track occurrences |
摘要 |
A resonance-frequency measuring method is used for measuring a resonance frequency of an information recording/reproducing device reproducing information recorded on a medium by driving a mechanism unit. The resonance-frequency measuring method comprises the measuring step of applying sine-wave oscillations at different frequencies one by one to the mechanism unit, and counting the number of times information reproduced upon application of each of the sine-wave oscillations differs from information indicating an aimed location, and the resonance-frequency determining step of determining the resonance frequency according to the number of times counted in the measuring step.
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申请公布号 |
US6774615(B2) |
申请公布日期 |
2004.08.10 |
申请号 |
US20020056865 |
申请日期 |
2002.01.25 |
申请人 |
FUJITSU LIMITED |
发明人 |
YOSHIDA SUSUMU;HASHIMOTO SHUICHI;KUBOHARA RYUKI;KOSUGI TATSUHIKO;HARA TAKEYORI;KAGAMI YOSHIYUKI |
分类号 |
G11B21/02;G11B21/10;(IPC1-7):G06M1/10;G11B17/00;G01M1/00 |
主分类号 |
G11B21/02 |
代理机构 |
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