发明名称 |
Servo signal processing apparatus, recorded data reading apparatus and method for processing servo signal |
摘要 |
A servo signal processing apparatus for processing a servo signal corresponding to servo information from a servo area on a recording medium for controlling a head. The servo area includes a servo mark area for storing a servo mark indicative of a head of the servo area, a gray mark area for storing a gray mark indicative of a head of information for position control for the head, and a gray code area for storing information. An A-D converter converts the servo signal to digital data. A digital filter filters the converted data based on a sampling clock, and outputs the filtered digital data. A servo mark detector detects a servo mark based on a continuity of a first predetermined logical value. A gray code decoder detects a gray code based on a continuity of a predetermined logical value. The gray code decoder decodes information stored in a gray code area following the detected gray mark.
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申请公布号 |
US2003007273(A1) |
申请公布日期 |
2003.01.09 |
申请号 |
US20000526277 |
申请日期 |
2000.03.15 |
申请人 |
HARAGUCHI HIROKO;SAWADA MASARU |
发明人 |
HARAGUCHI HIROKO;SAWADA MASARU |
分类号 |
G11B5/55;G11B5/596;G11B19/247;G11B21/08;G11B21/10;(IPC1-7):G11B5/09;G11B21/02 |
主分类号 |
G11B5/55 |
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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