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公开(公告)号：EP1191530A2
公开(公告)日：2002-03-27
申请号：EP01124943.0
申请日：1997-04-29
发明人： Okada, Isao , Hirabuki, Tsuyoshi
IPC分类号： G11B19/28
CPC分类号： H03L7/181 , E05Y2400/30 , G11B19/247 , G11B19/26 , G11B19/28 , G11B20/10 , G11B20/1025 , G11B20/1403 , G11B27/24 , G11B27/3027 , G11B2220/218 , G11B2220/2545 , H03L7/08 , H03L7/085 , H03L2207/50
摘要： An optical disk device, characterised in that said optical disk device comprises: a digital demodulation circuit (3026) for receiving a signal which is obtained as a result of reproducing from an optical disk and converting into a two-level signal, on which optical disk a digital modulated signal was previously recorded, said digital demodulation circuit performing digital demodulation on the received signal; a digital phase-locked loop circuit (3030) for generating a clock signal which is in phase synchronization with a demodulated signal output by said digital demodulation circuit; and a digital servo circuit (3034) for performing rotation control of said optical disk so as to correct a frequency error and a phase error between said clock signal and a reference clock signal.
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2.发明公开Servo circuit, digital PLL circuit and optical disk device 失效Servoschaltung，数字PLL-Schaltung和眼镜Plattengerät
公开(公告)号：EP0805438A3
公开(公告)日：1999-12-15
申请号：EP97302912.7
申请日：1997-04-29
发明人： Okada, Isao , Hirabuki, Tsuyoshi
CPC分类号： H03L7/181 , E05Y2400/30 , G11B19/247 , G11B19/26 , G11B19/28 , G11B20/10 , G11B20/1025 , G11B20/1403 , G11B27/24 , G11B27/3027 , G11B2220/218 , G11B2220/2545 , H03L7/08 , H03L7/085 , H03L2207/50
摘要： A speed error detecting portion (M1; 44, 50) detects a speed error which is a frequency difference between a reproduced clock signal which is reproduced from a recording medium and a reference clock signal. A first phase error detecting portion (M2; 74, 86, 88, 94) detects a phase error which is a phase difference between the reproduced clock signal and the reference clock signal. A servo signal generating portion (M3; 50, 54, 58, 60, 96, 98, 100, 64) generates a servo signal which is used for eliminating the speed error and phase error. A second phase error detecting portion (M4; 114, 120) detects a phase error which is a phase difference between a reproduced synchronization signal reproduced from the recording medium separately from the reproduced clock signal and a reference synchronization signal. A reference phase changing portion (M5; 72, 70) changes the phase of the reference clock signal based on the phase error detected by the second phase error detecting portion. A reference frequency changing portion (M6; 130, 46) changes the frequency of the reference clock signal based on the phase error detected by the second phase error detecting portion.
摘要翻译： 一种伺服电路，包括用于检测速度误差的速度误差检测装置（1044,1050），所述速度误差是从记录介质再现的再生时钟信号与基准时钟信号之间的频率差; 用于检测相位误差的相位误差检测装置（1078,1084,1092），所述相位误差是再现的时钟信号和参考时钟信号之间的相位差; 以及用于产生用于消除速度误差和相位误差的伺服信号的伺服信号产生装置（1052,1054,1057,1058,1060,1094,1046），其中所述相位误差检测装置包括：第一和第二分频 用于分别对再现的时钟信号和参考时钟信号进行分频的装置（1078,1048），其特征在于，分频比根据所述速度误差检测装置的速度误差增益的变化而改变; 以及用于检测分频再生时钟信号和分频基准时钟信号之间的相位误差的相位比较装置（1092）。
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3.发明公开
公开(公告)号：EP1610327A1
公开(公告)日：2005-12-28
申请号：EP05020394.2
申请日：1998-05-28
发明人： Okada, Isao , Hirabuki, Tsuyoshi
CPC分类号： G11B27/24 , G11B20/10009 , G11B20/1419 , G11B20/18 , G11B27/3027 , G11B2220/218 , G11B2220/2545 , H03M5/12
摘要： A decode circuit of an optical disc apparatus for decoding binary data from a biphase code signal which is reproduced from an optical disc and to be inverted at an end of each bit, said decode circuit being characterized by:
correction signal generating means for generating, when an inversion of said biphase code signal is not performed at an end of a bit, a correction signal for correcting the binary data immediately before or after said end of said bit; and
data correcting means for correcting the decoded binary data by using said correction signal.摘要翻译： 一种光盘装置的解码电路，用于从从光盘再现的双相码信号中对二进制数据进行解码，并在每个位的结尾进行反转，所述解码电路的特征在于：校正信号产生装置， 在比特结束时不执行所述双相码信号的反转，用于在所述比特结束之前或之后校正二进制数据的校正信号; 以及数据校正装置，用于通过使用所述校正信号来校正解码的二进制数据。
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公开(公告)号：EP1191530B1
公开(公告)日：2004-09-08
申请号：EP01124943.0
申请日：1997-04-29
发明人： Okada, Isao , Hirabuki, Tsuyoshi
IPC分类号： G11B19/247 , H03L7/08
CPC分类号： H03L7/181 , E05Y2400/30 , G11B19/247 , G11B19/26 , G11B19/28 , G11B20/10 , G11B20/1025 , G11B20/1403 , G11B27/24 , G11B27/3027 , G11B2220/218 , G11B2220/2545 , H03L7/08 , H03L7/085 , H03L2207/50
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5.发明公开A demodulation circuit and an optical disc apparatus 失效Demodulatorschaltung und optischesPlattengerät
公开(公告)号：EP1610328A1
公开(公告)日：2005-12-28
申请号：EP05020395.9
申请日：1998-05-28
发明人： Okada, Isao , Hirabuki, Tsuyoshi
CPC分类号： G11B27/24 , G11B20/10009 , G11B20/1419 , G11B20/18 , G11B27/3027 , G11B2220/218 , G11B2220/2545 , H03M5/12
摘要： A demodulation circuit of an optical disc apparatus performing an FSK demodulation by being provided with a binary signal which is obtained by binarizing a signal reproduced from an optical disc on which an FSK modulation signal is previously recorded, said demodulation circuit characterized by:
edge interval measuring means for measuring an edge interval of said binary signal;
subtracting means for obtaining an FSK modulation component from a difference between a measured edge interval value and a previously determined edge interval reference value;
first moving average means for obtaining a moving average of said FSK modulation component;
demodulation value calculating means for obtaining a demodulation value based on an average value output from said first moving average means;
second moving average means for obtaining a moving average of said demodulation value; and
comparing means for comparing an average value output from said second moving average means with a reference value so as to obtain a binary FSK demodulation signal.摘要翻译： 一种光盘装置的解调电路，其通过提供二进制信号来执行FSK解调，所述二进制信号是通过二值化从其上预先记录有FSK调制信号的光盘再现的信号而获得的，所述解调电路的特征在于：边缘间隔测量 用于测量所述二进制信号的边缘间隔的装置; 减法装置，用于从测量的边缘间隔值和预先确定的边缘间隔参考值之间的差获得FSK调制分量; 用于获得所述FSK调制分量的移动平均的第一移动平均装置; 解调值计算装置，用于根据从所述第一移动平均装置输出的平均值获得解调值; 第二移动平均装置，用于获得所述解调值的移动平均值; 以及比较装置，用于将来自所述第二移动平均装置的平均值输出与参考值进行比较，以获得二进制FSK解调信号。
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公开(公告)号：EP1191530A3
公开(公告)日：2002-06-26
申请号：EP01124943.0
申请日：1997-04-29
发明人： Okada, Isao , Hirabuki, Tsuyoshi
IPC分类号： G11B19/247 , H03L7/08
CPC分类号： H03L7/181 , E05Y2400/30 , G11B19/247 , G11B19/26 , G11B19/28 , G11B20/10 , G11B20/1025 , G11B20/1403 , G11B27/24 , G11B27/3027 , G11B2220/218 , G11B2220/2545 , H03L7/08 , H03L7/085 , H03L2207/50
摘要： An optical disk device, characterised in that said optical disk device comprises: a digital demodulation circuit (3026) for receiving a signal which is obtained as a result of reproducing from an optical disk and converting into a two-level signal, on which optical disk a digital modulated signal was previously recorded, said digital demodulation circuit performing digital demodulation on the received signal; a digital phase-locked loop circuit (3030) for generating a clock signal which is in phase synchronization with a demodulated signal output by said digital demodulation circuit; and a digital servo circuit (3034) for performing rotation control of said optical disk so as to correct a frequency error and a phase error between said clock signal and a reference clock signal.
摘要翻译： 1，一种光盘装置，其特征在于，所述光盘装置包括：数字解调电路（3026），用于接收从光盘再现并转换成两电平信号而获得的信号，光盘 预先记录数字调制信号，所述数字解调电路对接收信号进行数字解调; 数字锁相环电路（3030），用于产生与由所述数字解调电路输出的解调信号相位同步的时钟信号; 以及数字伺服电路（3034），用于对所述光盘进行旋转控制，以便校正所述时钟信号与参考时钟信号之间的频率误差和相位误差。
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7.发明公开Servo circuit, digital PLL circuit and optical disk device 失效Servoschaltung，数字PLL-Schaltung和眼镜Plattengerät
公开(公告)号：EP0805438A2
公开(公告)日：1997-11-05
申请号：EP97302912.7
申请日：1997-04-29
发明人： Okada, Isao , Hirabuki, Tsuyoshi
CPC分类号： H03L7/181 , E05Y2400/30 , G11B19/247 , G11B19/26 , G11B19/28 , G11B20/10 , G11B20/1025 , G11B20/1403 , G11B27/24 , G11B27/3027 , G11B2220/218 , G11B2220/2545 , H03L7/08 , H03L7/085 , H03L2207/50
摘要： A speed error detecting portion (M1; 44, 50) detects a speed error which is a frequency difference between a reproduced clock signal which is reproduced from a recording medium and a reference clock signal. A first phase error detecting portion (M2; 74, 86, 88, 94) detects a phase error which is a phase difference between the reproduced clock signal and the reference clock signal. A servo signal generating portion (M3; 50, 54, 58, 60, 96, 98, 100, 64) generates a servo signal which is used for eliminating the speed error and phase error. A second phase error detecting portion (M4; 114, 120) detects a phase error which is a phase difference between a reproduced synchronization signal reproduced from the recording medium separately from the reproduced clock signal and a reference synchronization signal. A reference phase changing portion (M5; 72, 70) changes the phase of the reference clock signal based on the phase error detected by the second phase error detecting portion. A reference frequency changing portion (M6; 130, 46) changes the frequency of the reference clock signal based on the phase error detected by the second phase error detecting portion.
摘要翻译： 速度误差检测部分（M1,44,50）检测速度误差，该速度误差是从记录介质再现的再生时钟信号与基准时钟信号之间的频率差。 第一相位误差检测部分（M2; 74,86,88,94）检测作为再现的时钟信号和参考时钟信号之间的相位差的相位误差。 伺服信号产生部分（M3; 50,54,58,60,96,98,100,64）产生用于消除速度误差和相位误差的伺服信号。 第二相位误差检测部分（M4; 114,120）检测作为从再现的时钟信号分离的从记录介质再现的再现的同步信号与参考同步信号之间的相位差的相位误差。 参考相位改变部分（M5; 72,70）基于由第二相位误差检测部分检测到的相位误差来改变参考时钟信号的相位。 参考频率改变部分（M6; 130,46）基于由第二相位误差检测部分检测到的相位误差来改变参考时钟信号的频率。
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