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1. 发明授权

US5572503A Correcting non-linear distortions of optical information with a non-linear equalizer 失效
标题翻译：用非线性均衡器校正光信息的非线性失真
公开(公告)号：US5572503A
公开(公告)日：1996-11-05
申请号：US358584
申请日：1994-12-13
申请人： Naoki Satoh , Takeshi Maeda , Atsushi Saito , Hisataka Sugiyama , Hirofumi Sukeda , Hiroyuki Tsuchinaga , Yasuhide Ouchi
发明人： Naoki Satoh , Takeshi Maeda , Atsushi Saito , Hisataka Sugiyama , Hirofumi Sukeda , Hiroyuki Tsuchinaga , Yasuhide Ouchi
IPC分类号： G11B7/00 , G11B7/004 , G11B7/0045 , G11B7/005 , G11B7/007 , G11B20/10
CPC分类号： G11B20/10046 , G11B20/10009 , G11B7/0045 , G11B7/005
摘要： An optical disk device which uses a light spot for reproducing data, including photodetector, a decoder, and a non-linear equalizer provided between the photodetector and the decoder for correcting non-linear distortions in a reproduced signal from an optical disk. The non-linear equalizer includes a linear equalizer and a decision feedback equalizer provided after the linear equalizer. The non-linear equalizer includes a detector for detecting a signal on the basis of the output of the linear equalizer with the output of the detector being input to the decision feedback equalizer, the output of which is input to the detector along with the output of the linear equalizer in an additive manner.
摘要翻译：一种光盘装置，其使用光点来再现数据，包括设置在光电检测器和解码器之间的光电检测器，解码器和非线性均衡器，用于校正来自光盘的再现信号中的非线性失真。非线性均衡器包括线性均衡器和在线性均衡器之后提供的判决反馈均衡器。非线性均衡器包括用于基于线性均衡器的输出来检测信号的检测器，其中检测器的输出被输入到判决反馈均衡器，其输出与检测器的输出一起输入到检测器线性均衡器。

2. 发明授权

US5848045A Method for recording and reading an optical disk 失效
标题翻译：记录和读取光盘的方法
公开(公告)号：US5848045A
公开(公告)日：1998-12-08
申请号：US968526
申请日：1997-11-12
申请人： Fumiyoshi Kirino , Tsuyoshi Toda , Hiroshi Ide , Hisataka Sugiyama , Atsushi Saito , Hiroyuki Tsuchinaga , Takeshi Maeda , Fumio Kugiya , Toshimitsu Kaku , Seiichi Mita , Kazuo Shigematsu , Yasuhide Ouchi
发明人： Fumiyoshi Kirino , Tsuyoshi Toda , Hiroshi Ide , Hisataka Sugiyama , Atsushi Saito , Hiroyuki Tsuchinaga , Takeshi Maeda , Fumio Kugiya , Toshimitsu Kaku , Seiichi Mita , Kazuo Shigematsu , Yasuhide Ouchi
IPC分类号： G11B7/0045 , G11B7/095 , G11B7/125 , G11B11/105 , G11B20/12 , G11B20/18 , G11B7/00
CPC分类号： G11B7/126 , G11B11/1053 , G11B11/10595 , G11B7/0045 , G11B7/0956 , G11B20/1258 , G11B20/182
摘要： A super high density optical disk apparatus is obtained by using an exchangeable recording medium having a recording capacity of at least 1.5 Gb/in.sup.2 in an optical recording and reading apparatus for recording or reading at least using a laser beam or by using one of means which can record on a recording medium only once and means which can record at least two times repeatedly as recording means to be used.
摘要翻译：通过在至少使用激光束进行记录或读取的光学记录和读取装置中使用具有至少1.5Gb / in2的记录容量的可交换记录介质来获得超高密度光盘装置，或者通过使用可以在记录介质上记录一次，并且可以重复记录至少两次作为要使用的记录装置的装置。

3. 发明授权

US5703855A Optical disk apparatus and recording and reading method for an optical disk using the same 失效
标题翻译：光盘装置以及使用其的光盘的记录和读取方法
公开(公告)号：US5703855A
公开(公告)日：1997-12-30
申请号：US220428
申请日：1994-03-30
申请人： Fumiyoshi Kirino , Tsuyoshi Toda , Horishi Ide , Hisataka Sugiyama , Atsushi Saito , Hiroyuki Tsuchinaga , Takeshi Maeda , Fumio Kugiya , Toshimitsu Kaku , Seiichi Mita , Kazuo Shigematsu , Yasuhide Ouchi
发明人： Fumiyoshi Kirino , Tsuyoshi Toda , Horishi Ide , Hisataka Sugiyama , Atsushi Saito , Hiroyuki Tsuchinaga , Takeshi Maeda , Fumio Kugiya , Toshimitsu Kaku , Seiichi Mita , Kazuo Shigematsu , Yasuhide Ouchi
IPC分类号： G11B7/0045 , G11B7/095 , G11B7/125 , G11B11/105 , G11B20/12 , G11B20/18 , G11B7/00
CPC分类号： G11B7/126 , G11B11/1053 , G11B11/10595 , G11B7/0045 , G11B7/0956 , G11B20/1258 , G11B20/182
摘要： A super high density optical disk apparatus is obtained by using an exchangeable recording medium having a recording capacity of at least 1.5 Gb/in.sup.2 in an optical recording and reading apparatus for recording or reading at least using a laser beam or by using one of an element which can record on a recording medium only once and another element which can record at least two times repeatedly as recording elements to be used.
摘要翻译：通过在至少使用激光束的记录或读取的光学记录和读取装置中使用具有至少1.5Gb / in2的记录容量的可交换记录介质来获得超高密度光盘装置，或者通过使用元件其可以在记录介质上记录一次，另一个可以重复记录至少两次的元素作为要使用的记录元素。

4. 发明授权

US06661594B2 Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuit 有权
标题翻译：信号处理电路和使用该信号的信息记录/再现装置，以及用于优化均衡器电路的系数的方法
公开(公告)号：US06661594B2
公开(公告)日：2003-12-09
申请号：US10277695
申请日：2002-10-23
申请人： Naoki Satoh , Seiichi Mita , Shoichi Miyazawa , Terumi Takashi , Yosuke Hori , Yoshiju Watanabe , Akihiko Hirano , Satoshi Minoshima , Hideki Miyasaka , Toshihiro Nitta , Tomoaki Hirai , Ryushi Shimokawa , Koji Shida , Yasuhide Ouchi
发明人： Naoki Satoh , Seiichi Mita , Shoichi Miyazawa , Terumi Takashi , Yosuke Hori , Yoshiju Watanabe , Akihiko Hirano , Satoshi Minoshima , Hideki Miyasaka , Toshihiro Nitta , Tomoaki Hirai , Ryushi Shimokawa , Koji Shida , Yasuhide Ouchi
IPC分类号： G11B535
CPC分类号： G11B20/10055 , G11B5/035 , G11B5/09 , G11B20/10009 , G11B20/10481
摘要： A signal processing circuit for a magnetic recording/reproducing apparatus, including at least an AGC, a PLL, a LPF, an equalizer circuit and a detection circuit, wherein a coefficient compensation circuit is formed by defining a constitution of the equalizer circuit, an error detection circuit is provided which operates by receiving input from the detection circuit, and the LSI is formed by a plurality of analog and digital chips, and the analog and digital chips are connected by current-output type D/A converters connected to at least the AGC and the PLL.
摘要翻译：一种用于至少包括AGC，PLL，LPF，均衡器电路和检测电路的磁记录/再现装置的信号处理电路，其中通过定义均衡器电路的结构形成系数补偿电路，错误提供检测电路，其通过接收来自检测电路的输入而工作，并且LSI由多个模拟和数字芯片形成，并且模拟和数字芯片通过电流输出型D / A转换器连接至少至少 AGC和PLL。

5. 发明授权

US5818655A Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuit 失效
公开(公告)号：US5818655A
公开(公告)日：1998-10-06
申请号：US506635
申请日：1995-07-25
申请人： Naoki Satoh , Seiichi Mita , Shoichi Miyazawa , Terumi Takashi , Yosuke Hori , Yoshiju Watanabe , Akihiko Hirano , Satoshi Minoshima , Hideki Miyasaka , Toshihiro Nitta , Tomoaki Hirai , Ryushi Shimokawa , Koji Shida , Yasuhide Ouchi
发明人： Naoki Satoh , Seiichi Mita , Shoichi Miyazawa , Terumi Takashi , Yosuke Hori , Yoshiju Watanabe , Akihiko Hirano , Satoshi Minoshima , Hideki Miyasaka , Toshihiro Nitta , Tomoaki Hirai , Ryushi Shimokawa , Koji Shida , Yasuhide Ouchi
IPC分类号： G11B5/035 , G11B5/09 , G11B20/10
CPC分类号： G11B20/10055 , G11B20/10009 , G11B20/10481 , G11B5/035 , G11B5/09
摘要： A signal processing circuit for a magnetic recording/reproducing apparatus, including at least an AGC, a PLL, a LPF, an equalizer circuit and a detection circuit, wherein a coefficient compensation circuit is formed by defining a constitution of the equalizer circuit, an error detection circuit is provided which operates by receiving input from the detection circuit, and the LSI is formed by a plurality of analog and digital chips, and the analog and digital chips are connected by current-output type D/A converters connected to at least the AGC and the PLL.

6. 发明授权

US06496316B1 Magnetic recording and reproduction apparatus 失效
标题翻译：磁记录和再现设备
公开(公告)号：US06496316B1
公开(公告)日：2002-12-17
申请号：US09721988
申请日：2000-11-27
申请人： Yosuke Hori , Yasuhide Ouchi , Naoki Satoh
发明人： Yosuke Hori , Yasuhide Ouchi , Naoki Satoh
IPC分类号： G11B5035
CPC分类号： G11B20/182 , G11B5/02 , G11B5/09 , G11B20/10009 , G11B20/10194 , G11B20/1833
摘要： A magnetic recording and reproduction apparatus, includes a circuit for changing a reference amplitude value of a Viterbi detector. The circuit is used to record and reproduce data with the reference amplitude value displaced from a reference value, thereby measuring the data error rate. Displacement of the reference amplitude from a reference value increases the data error rate, and therefore the data error rate can be measured within a short time. A data error rate with the reference amplitude equal to a reference value is estimated from the data error rate measurement, thereby making it possible to evaluate the degree of accuracy of a magnetic recording and reproduction apparatus. The data error rate is measured with the reference amplitude of the Viterbi detector displaced from a reference value while changing the equalization coefficient value of a waveform equalizer, the cut-off frequency of a low-pass filter and the write precompensation amount of a write precompensation circuit. In this way, the effect of the reproduction channel parameter or the write precompensation amount on the degree of accuracy of the magnetic recording and reproduction apparatus is evaluated, and the optimum value of the reproduction channel parameter or the write precompensation amount can thus be determined.
摘要翻译：磁记录和再现装置包括用于改变维特比检测器的参考幅度值的电路。该电路用于记录和再现参考振幅值从参考值偏移的数据，从而测量数据错误率。参考幅度从参考值的位移增加了数据错误率，因此可以在短时间内测量数据错误率。从数据误差率测量来估计参考幅度等于参考值的数据错误率，从而可以评估磁记录和再现装置的精度。在改变波形均衡器的均衡系数值，低通滤波器的截止频率和写入预补偿的写入预补偿量的同时，维特比检测器的参考幅度从参考值偏移来测量数据错误率电路。以这种方式，评估再现频道参数或写入预补偿量对磁记录和再现装置的精度的影响，从而可以确定再现频道参数的最佳值或写入预补偿量。

7. 发明授权

US06175460B1 Magnetic recording and reproduction apparatus 失效
标题翻译：磁记录和再现设备
公开(公告)号：US06175460B1
公开(公告)日：2001-01-16
申请号：US09435779
申请日：1999-11-08
申请人： Yosuke Hori , Yasuhide Ouchi , Naoki Satoh
发明人： Yosuke Hori , Yasuhide Ouchi , Naoki Satoh
IPC分类号： G11B509
CPC分类号： G11B20/182 , G11B5/02 , G11B5/09 , G11B20/10009 , G11B20/10194 , G11B20/1833
摘要： A magnetic recording and reproduction apparatus: includes a circuit for changing a reference amplitude value of a Viterbi detector. The circuit is used to record and reproduce data with the reference amplitude value displaced from a reference value, thereby measuring the data error rate. Displacement of the reference amplitude from a reference value increases the data error rate, and therefore the data error rate can be measured within a short time. A data error rate with the reference amplitude equal to a reference value is estimated from the data error rate measurement, thereby making it possible to evaluate the degree of accuracy of a magnetic recording and reproduction apparatus. The data error rate is measured with the reference amplitude of the Viterbi detector displaced from a reference value while changing the equalization coefficient value of a waveform equalizer, the cut-off frequency of a low-pass filter and the write precompensation amount of a write precompensation circuit. In this way, the effect of the reproduction channel parameter or the write precompensation amount on the degree of accuracy of the magnetic recording and reproduction apparatus is evaluated, and the optimum value of the reproduction channel parameter or the write precompensation amount can thus be determined.
摘要翻译：磁记录和再现装置包括用于改变维特比检测器的参考振幅值的电路。该电路用于记录和再现参考振幅值从参考值偏移的数据，从而测量数据错误率。参考幅度从参考值的位移增加了数据错误率，因此可以在短时间内测量数据错误率。从数据误差率测量来估计参考幅度等于参考值的数据错误率，从而可以评估磁记录和再现装置的精度。在改变波形均衡器的均衡系数值，低通滤波器的截止频率和写入预补偿的写入预补偿量的同时，维特比检测器的参考幅度从参考值偏移来测量数据错误率电路。以这种方式，评估再现频道参数或写入预补偿量对磁记录和再现装置的精度的影响，从而可以确定再现频道参数的最佳值或写入预补偿量。

8. 发明授权

US5659309A Data recording/reproducing apparatus having viterbi decoder and method thereof 失效
标题翻译：具有维特比解码器的数据记录/再现装置及其方法
公开(公告)号：US5659309A
公开(公告)日：1997-08-19
申请号：US389773
申请日：1995-02-16
申请人： Terumi Takashi , Yasuhide Ouchi , Seiichi Mita , Akihiko Hirano , Naoki Satoh
发明人： Terumi Takashi , Yasuhide Ouchi , Seiichi Mita , Akihiko Hirano , Naoki Satoh
IPC分类号： G11B20/18 , G11B20/10 , H03M13/23 , H03M13/41 , H03M7/00
CPC分类号： H03M13/6343 , G11B20/10009 , H03M13/41
摘要： A data recording/reproducing apparatus and method therefor having a Viterbi decoder which stores operation result values of an inputted reproduced signal and the reference value when the peak value of the reproduced signal is updated, compares this value with the reproduced signal in amplitude, updates the stored value when the result satisfies the predetermined condition, detects a change in the polarity of the comparison result, controls the clock counter depending on the status of the peak value updating signal, sets 1 in the shift register at the position indicated by the counter according to the detected polarity inversion signal when the peak value is updated, and accordingly makes the updating and detecting operations independent of operations of addition and subtraction of the current reproduced signal and reference value and operations of addition and subtraction of amplitude comparison.
摘要翻译：一种数据记录/再现装置和方法，其具有维特比解码器，其在再现信号的峰值被更新时存储输入的再现信号的运算结果值和参考值，将该值与振幅的再现信号进行比较，更新当结果满足预定条件时，存储值检测比较结果的极性的变化，根据峰值更新信号的状态来控制时钟计数器，根据计数器指示的位置在移位寄存器中设置1 当更新峰值时检测到的极性反转信号，并且因此使得更新和检测操作与当前再现信号的加法和减法操作无关，参考值和幅度比较的相加和减法操作。

9. 发明授权

US6046873A Magnetic recording and reproducing apparatus including a viterbi detector having a variable reference amplitude value 失效
标题翻译：磁记录和再现装置包括具有可变参考振幅值的维特比检测器
公开(公告)号：US6046873A
公开(公告)日：2000-04-04
申请号：US529400
申请日：1995-09-18
申请人： Yosuke Hori , Yasuhide Ouchi , Naoki Satoh
发明人： Yosuke Hori , Yasuhide Ouchi , Naoki Satoh
IPC分类号： G11B5/02 , G11B5/09 , G11B20/10 , G11B20/18 , G11B15/12
CPC分类号： G11B20/182 , G11B20/10009 , G11B5/02 , G11B5/09 , G11B20/10194 , G11B20/1833
摘要： A magnetic recording and reproduction apparatus, includes a circuit for changing a reference amplitude value of a Viterbi detector. The circuit is used to record and reproduce data with the reference amplitude value displaced from a reference value, thereby measuring the data error rate. Displacement of the reference amplitude from a reference value increases the data error rate, and therefore the data error rate can be measured within a short time. A data error rate with the reference amplitude equal to a reference value is estimated from the data error rate measurement, thereby making it possible to evaluate the degree of accuracy of a magnetic recording and reproduction apparatus. The data error rate is measured with the reference amplitude of the Viterbi detector displaced from a reference value while changing the equalization coefficient value of a waveform equalizer, the cut-off frequency of a low-pass filter and the write precompensation amount of a write precompensation circuit. In this way, the effect of the reproduction channel parameter or the write precompensation amount on the degree of accuracy of the magnetic recording and reproduction apparatus is evaluated, and the optimum value of the reproduction channel parameter or the write precompensation amount can thus be determined.
摘要翻译：磁记录和再现装置包括用于改变维特比检测器的参考幅度值的电路。该电路用于记录和再现参考振幅值从参考值偏移的数据，从而测量数据错误率。参考幅度从参考值的位移增加了数据错误率，因此可以在短时间内测量数据错误率。从数据误差率测量来估计参考幅度等于参考值的数据错误率，从而可以评估磁记录和再现装置的精度。在改变波形均衡器的均衡系数值，低通滤波器的截止频率和写预补偿的写预补偿量的同时，维特比检测器的参考幅度从参考值偏移来测量数据错误率电路。以这种方式，评估再现频道参数或写入预补偿量对磁记录和再现装置的精度的影响，从而可以确定再现频道参数的最佳值或写入预补偿量。

10. 发明授权

US5467232A Magnetic recording and reproducing method using phase discrimination and apparatus therefor 失效
标题翻译：使用相位鉴别的磁记录和再现方法及其装置
公开(公告)号：US5467232A
公开(公告)日：1995-11-14
申请号：US36280
申请日：1993-03-24
申请人： Yasuhide Ouchi , Naoki Sato , Hideki Sawaguchi , Yosuke Hori
发明人： Yasuhide Ouchi , Naoki Sato , Hideki Sawaguchi , Yosuke Hori
IPC分类号： G11B5/09 , G11B20/10 , H04L7/02 , H04L25/03 , G11B5/035 , G11B27/10 , H03H7/30
CPC分类号： H04L25/03038 , G11B20/10009 , G11B5/09
摘要： In a phase discrimination signal processing system in the signal reproduction of a magnetic recording and reproducing apparatus, instead of differentiation of a reproduced signal, amplitude discrimination automatic equalization is effected for an isolated waveform at a phase discrimination point corresponding to an isolated magnetization reversal reproduced by a magnetic head such that an amplitude at each discrimination time other than a peak point is zero to effect phase discrimination of the signal waveform.
摘要翻译：在磁记录和再现装置的信号再现中的相位鉴别信号处理系统中，代替再生信号的区分，对相应于与由磁头，使得除了峰值点之外的每个鉴别时间的振幅为零，以实现信号波形的相位识别。

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