发明名称 |
SLEW RATE LIMITING CIRCUIT AND OPTICAL DISC APPARATUS |
摘要 |
In a slew rate limiter, a slew rate is limited so as not to pass a signal varying more abruptly than a wobble signal included in a difference signal generated by a differential amplifier, and this limited slew rate is used to process the difference signal to be outputted. That is, the slew rate limiter removes a signal varying more abruptly than a wobble signal included in a difference signal DIFO, and then outputs only the wobble signal. A DAC generates an offset voltage. An adder is used to add this offset voltage to the wobble signal from the slew rate limiter. The signal obtained by this addition as a slice level is compared by a comparator with the difference signal, thereby reproducing an LPP signal.
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申请公布号 |
WO03098798(A1) |
申请公布日期 |
2003.11.27 |
申请号 |
WO2003JP06145 |
申请日期 |
2003.05.16 |
申请人 |
ASAHI KASEI MICROSYSTEMS CO.,LTD.;KOBAYASHI, MAKOTO;TOMIOKA, KOJI;SASAKI, KAZUNARI |
发明人 |
KOBAYASHI, MAKOTO;TOMIOKA, KOJI;SASAKI, KAZUNARI |
分类号 |
G11B7/005;G11B7/007;G11B20/20;(IPC1-7):H03G11/00;G11B7/095 |
主分类号 |
G11B7/005 |
代理机构 |
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代理人 |
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地址 |
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