发明名称 |
Optical disk replay device which varies a delay and frequency of a reproduced signal based on a position of an optical head |
摘要 |
An optical disk replay device for replaying information from an optical disk recorded in a modified constant angular velocity (MCAV) format. The optical disk replay device has an optical head to output a reproduced signal based on the information stored in the optical disk. The signal from the optical head is passed through a series of delay circuits which output delayed signals based on the reproduced signal. Thereafter, a calculating circuit sums, or subtracts, the delayed signals and outputs an intermediate reproduced signal to a band limiting circuit which attenuates the frequency of the intermediate reproduced signal. A control circuit changes the amount of delay imparted by the delay circuits and to adjust the frequency range of the band limiting circuit.
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申请公布号 |
US5715109(A) |
申请公布日期 |
1998.02.03 |
申请号 |
US19960723245 |
申请日期 |
1996.09.30 |
申请人 |
NIKON CORPORATION |
发明人 |
TANAKA, SHINICHI;INABA, NAOTO |
分类号 |
G11B20/10;G11B7/00;G11B7/005;G11B19/14;G11B20/12;(IPC1-7):G11B5/035 |
主分类号 |
G11B20/10 |
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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