发明名称 |
Tracking apparatus for sampled servo system which performs tracking control using signals identifying tracks as even or odd numbered |
摘要 |
A tracking apparatus for a sampled servo system, wherein a tracking servo loop is opened when a jump command is generated by ceasing to supply a tracking error signal to a tracking control circuit, which is instead supplied with a kick pulse to start a track jump operation. Thereafter the tracking control circuit is reset to relay the tracking error signal when a read track is switched causing a change in value of an odd/even determining signal to close the tracking servo loop. Finally a brake pulse is supplied to the tracking control circuit for terminating the track jump operation. This enables an irradiating spot to be stably led into a target track when the track jump operation is switched back to the tracking servo operation even if the track pitch of the disk being read is variable.
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申请公布号 |
US5532988(A) |
申请公布日期 |
1996.07.02 |
申请号 |
US19940328000 |
申请日期 |
1994.10.24 |
申请人 |
PIONEER ELECTRONIC CORPORATION |
发明人 |
YOKOGAWA, FUMIHIKO |
分类号 |
G11B7/007;G11B7/085;(IPC1-7):G11B7/095 |
主分类号 |
G11B7/007 |
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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