发明名称 |
Data track accessing apparatus |
摘要 |
A data-track accessing apparatus effectively eliminates external disturbance components from a track-deviation signal and correctly locates an objective track at an extremely fast speed. The apparatus includes an actuator which transfers a light beam in a direction of traversing tracks, a track-deviation detecting circuit which detects an amount of track deviation when the light beam traverses the tracks, a binary-coding circuit which converts the detected track-deviation signal into a binary-coded signal, an external-disturbance-component removal circuit which removes external disturbance components from the binary-coded track-deviation signal, and a speed-discriminating circuit which discriminates the moving speed of the light beam into multiple stages based on an output signal from the removal circuit.
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申请公布号 |
US5177719(A) |
申请公布日期 |
1993.01.05 |
申请号 |
US19890417426 |
申请日期 |
1989.10.05 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
YAMADA, SHINICHI;MORIYA, MITSURO;YAMAGUCHI, HIROYUKI |
分类号 |
G11B7/085 |
主分类号 |
G11B7/085 |
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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