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1. 发明申请

US20070025212A1 Optical disk apparatus and optical disk reproducing method 审中-公开
标题翻译：光盘装置和光盘再现方法
公开(公告)号：US20070025212A1
公开(公告)日：2007-02-01
申请号：US11493514
申请日：2006-07-27
申请人： Yukiyasu Tatsuzawa , Takahiro Nango , Hideyuki Yamakawa , Koichi Otake , Toshihiko Kaneshige , Hiroaki Morino
发明人： Yukiyasu Tatsuzawa , Takahiro Nango , Hideyuki Yamakawa , Koichi Otake , Toshihiko Kaneshige , Hiroaki Morino
IPC分类号： G11B15/52
CPC分类号： G11B20/1833 , G11B7/0053 , G11B20/1217 , G11B20/18 , G11B2020/122 , G11B2020/1287 , G11B2220/2537 , G11B2220/2579
摘要： According to one embodiment, there is provided an optical disk apparatus including a detecting unit which reads a reflective light from an optical disk and outputs a read signal, a decoder which decodes the read signal from the detecting unit, an extracting unit which extracts from the read signal the first and second specification information of the same content recorded in first and second areas on the optical disk, a processor which compares the first specification information with the second specification information and processes the specification information based on the comparison result, and a controller which controls the detecting unit or the decoder, based on the specification information processed by the processor.
摘要翻译：根据一个实施例，提供了一种光盘装置，包括：检测单元，其从光盘读取反射光并输出读取信号;解码器，其对来自检测单元的读取信号进行解码;提取单元，其从读取信号记录在光盘上的第一和第二区域中记录的相同内容的第一和第二规格信息;处理器，其将第一规格信息与第二规格信息进行比较，并根据比较结果处理规格信息;以及控制器其基于由处理器处理的规格信息来控制检测单元或解码器。

2. 发明申请

US20070030777A1 Digital data reproducing device 审中-公开
标题翻译：数字数据再现装置
公开(公告)号：US20070030777A1
公开(公告)日：2007-02-08
申请号：US11498072
申请日：2006-08-03
申请人： Hideyuki Yamakawa , Koichi Otake , Yukiyasu Tatsuzawa , Hiroyuki Moro , Toshihiko Kaneshige , Hiroaki Morino
发明人： Hideyuki Yamakawa , Koichi Otake , Yukiyasu Tatsuzawa , Hiroyuki Moro , Toshihiko Kaneshige , Hiroaki Morino
IPC分类号： G11B20/10
CPC分类号： G11B20/10 , G11B20/10009 , G11B20/10046 , G11B20/14
摘要： An optical disk device which decodes data recorded on an optical disk, comprises a first measuring unit which measure a cycle of a plurality of first synchronous signal regions VFO contained in a reproduction signal from an optical pickup, a cycle comparing unit which compares the measurement result of the first measuring unit with a first predetermined cycle, a second measuring unit which measures a cycle of a plurality of second synchronous signal regions SYNC which are contained in the reproduction signal from the optical pickup and have the cycle shorter than that of the plurality of first synchronous signal regions VFO, a cycle comparing unit which compares the measurement result of the second measuring unit with a second predetermined cycle, and an oscillator which generates a clock signal CKS for sampling the reproduction signal on the basis of the comparison results of the first and second cycle comparing units.
摘要翻译：一种对记录在光盘上的数据进行解码的光盘装置，包括测量来自光学拾取器的再现信号中包含的多个第一同步信号区域VFO的周期的第一测量单元，比较测量结果具有第一预定周期的第一测量单元，第二测量单元，其测量来自光学拾取器的再现信号中包含的多个第二同步信号区域SYNC的周期，并且具有比多个第一同步信号区域VFO，将第二测量单元的测量结果与第二预定周期进行比较的周期比较单元，以及基于第一预定周期的比较结果生成用于对再现信号进行采样的时钟信号CKS的振荡器和第二循环比较单位。

3. 发明申请

US20070025224A1 Optical disk drive 审中-公开
标题翻译：光盘驱动器
公开(公告)号：US20070025224A1
公开(公告)日：2007-02-01
申请号：US11493831
申请日：2006-07-27
申请人： Yukiyasu Tatsuzawa , Hideyuki Yamakawa , Koichi Otake , Toshihiko Kaneshige , Hiroaki Morino
发明人： Yukiyasu Tatsuzawa , Hideyuki Yamakawa , Koichi Otake , Toshihiko Kaneshige , Hiroaki Morino
IPC分类号： G11B20/10
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10222 , G11B20/10425 , G11B2020/1863
摘要： According to one embodiment, a frequency detector detects a frequency error between a frequency of a reproduction signal supplied from an analog to digital converter and a frequency of a clock for conversion. A loop filter controls an oscillation frequency of a voltage control oscillator based on the frequency error and a phase error detected by a phase comparator. An adaptive equalizer equalizes a waveform of the reproduction signal supplied from the analog to digital converter to obtain a response of a predetermined PR class. A Viterbi decoder decodes the waveform equalized signal into binary data by maximum likelihood sequence estimation. A clock supply control circuit stops supply of a clock to at least the phase comparator, the adaptive equalizer and the Viterbi decoder in a case where the frequency error is larger than a designated error.
摘要翻译：根据一个实施例，频率检测器检测从模数转换器提供的再现信号的频率与用于转换的时钟频率之间的频率误差。环路滤波器基于频率误差和由相位比较器检测到的相位误差来控制压控振荡器的振荡频率。自适应均衡器对从模数转换器提供的再现信号的波形进行均衡以获得预定PR类的响应。维特比解码器通过最大似然序列估计将波形均衡信号解码为二进制数据。在频率误差大于指定误差的情况下，时钟供给控制电路停止向至少相位比较器，自适应均衡器和维特比解码器提供时钟。

4. 发明申请

US20070025213A1 Information reproducing apparatus and information reproducing method 审中-公开
标题翻译：信息再现装置和信息再现方法
公开(公告)号：US20070025213A1
公开(公告)日：2007-02-01
申请号：US11493793
申请日：2006-07-27
申请人： Hiroaki Morino , Toshihiko Kaneshige , Koichi Otake , Hideyuki Yamakawa , Yukiyasu Tatsuzawa
发明人： Hiroaki Morino , Toshihiko Kaneshige , Koichi Otake , Hideyuki Yamakawa , Yukiyasu Tatsuzawa
IPC分类号： G11B15/52
CPC分类号： G11B20/10 , G11B7/0053 , G11B7/0908 , G11B27/24 , G11B2220/2579
摘要： An information reproducing apparatus according to the present invention is capable of reproducing an information storage medium storing BCA information recorded in a first area and RF information recorded in a second area on an outer side of the first area. The information reproducing apparatus includes an optical pickup to radiate laser light onto the first and second areas and detect reflected light thereof; a reproducing system unit to reproduce an RF signal and a BCA signal on the basis of the reflected light; and a focus control unit to control focusing by setting a focus position to a signal layer of the optical disc when the RF signal is to be reproduced and control defocusing by displacing the focus position from the signal layer when the BCA signal is to be reproduced, thereby equivalently suppressing a high-frequency component of the BCA signal.
摘要翻译：根据本发明的信息再现装置能够再现存储记录在第一区域中的BCA信息和记录在第一区域外侧的第二区域中的RF信息的信息存储介质。该信息再现装置包括一个光学拾取器，用于将激光照射到第一和第二区域上并检测其反射光; 再现系统单元，用于基于反射光再现RF信号和BCA信号; 以及聚焦控制单元，用于当要再现RF信号时通过将聚焦位置设置到光盘的信号层来控制聚焦，并且当BCA信号将被再现时通过从信号层移位聚焦位置来进行散焦控制，从而等效地抑制BCA信号的高频分量。

5. 发明申请

US20080019249A1 APPARATUS FOR REPRODUCING DATA ON RECORDING MEDIUM AND METHOD FOR REPRODUCING DATA ON THE MEDIUM 审中-公开
标题翻译：用于在记录介质上再现数据的装置和用于在介质上再现数据的方法
公开(公告)号：US20080019249A1
公开(公告)日：2008-01-24
申请号：US11771906
申请日：2007-06-29
申请人： Yukiyasu Tatsuzawa , Hideyuki Yamakawa , Koichi Otake , Norikatsu Chiba , Yasuhiro Kanishima , Toshifumi Yamamoto , Toshihiko Kaneshige
发明人： Yukiyasu Tatsuzawa , Hideyuki Yamakawa , Koichi Otake , Norikatsu Chiba , Yasuhiro Kanishima , Toshifumi Yamamoto , Toshihiko Kaneshige
IPC分类号： G11B5/09
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10055 , G11B20/10212 , G11B20/10296
摘要： An apparatus for reproducing digital data recorded on a recording medium by a Partial Response Maximum Likelihood method, the digital data being recorded in a code pattern in which the same code continuously appears at least two times, includes an analog-to-digital converting unit that samples an analog reproduction signal recorded on the recording medium and converts the sampled analog reproduction signal into a digital signal; a sampling rate switching unit that adaptively switches the sampling rate in the analog-to-digital converting unit from a higher rate to a lower rate; and a data demodulating unit that reproduces and demodulates the digital signal subjected to the analog-to-digital conversion in the analog-to-digital converting unit by the Partial Response Maximum Likelihood method in accordance with the switching between the higher rate and the lower rate.
摘要翻译：一种用于通过部分响应最大似然方法再现记录在记录介质上的数字数据的装置，所述数字数据以相同代码连续出现至少两次的代码模式被记录，包括模数转换单元，模数转换单元采样记录在记录介质上的模拟再现信号，并将采样的模拟再现信号转换为数字信号; 采样率切换单元，其自适应地将模数转换单元中的采样率从较高速率切换到较低速率; 以及数据解调单元，其通过部分响应最大似然方法根据较高速率和较低速率之间的切换再现和解调在模数转换单元中经受模数转换的数字信号。

6. 发明申请

US20050141373A1 Optical disk apparatus, method of recording information, and information recording medium 失效
标题翻译：光盘装置，记录信息的方法和信息记录介质
公开(公告)号：US20050141373A1
公开(公告)日：2005-06-30
申请号：US11017703
申请日：2004-12-22
申请人： Toshihiko Kaneshige , Koichi Otake , Hideyuki Yamakawa , Yukiyasu Tatsuzawa , Hiroyuki Moro
发明人： Toshihiko Kaneshige , Koichi Otake , Hideyuki Yamakawa , Yukiyasu Tatsuzawa , Hiroyuki Moro
IPC分类号： G11B20/10 , G11B7/0045 , G11B7/007 , G11B20/12 , G11B20/14 , G11B27/19 , G11B27/24 , G11B27/30 , G11B5/09
CPC分类号： G11B27/24 , G11B7/24082 , G11B20/1217 , G11B20/1403 , G11B2020/1239 , G11B2020/1269 , G11B2020/1476 , G11B2220/216 , G11B2220/2537 , G11B2220/2562 , G11B2220/2575
摘要： A recorded stream generator generates a data block stream in synchronism with the phase of a recording clock, from the input data. The recorded stream generator further generates, for each predetermined data unit constituting the data block stream, a data phase reference pulse indicative of the phase of the data unit. An inserting section inserts a VFO signal into a predetermined amount (32 sectors) of the data block stream, the VFO signal having a length of time corresponding to a difference in phase between an wobble address phase signal and a data phase reference pulse. The inserting section thus provides a data stream DST consisting of the VFO signals and the data block streams. An LD uses light beams to record the data stream on an optical disk.
摘要翻译：记录流生成器根据输入数据与记录时钟的相位同步地生成数据块流。对于构成数据块流的每个预定数据单元，记录的流生成器还产生指示数据单元的相位的数据相位参考脉冲。插入部分将VFO信号插入到数据块流的预定量（32个扇区）中，VFO信号具有与摆动地址相位信号和数据相位参考脉冲之间的相位差相对应的时间长度。因此，插入部分提供由VFO信号和数据块流组成的数据流DST。 LD使用光束将数据流记录在光盘上。

7. 发明申请

US20050117484A1 Disk device and disk reproduction method 失效
标题翻译：磁盘设备和磁盘再现方法
公开(公告)号：US20050117484A1
公开(公告)日：2005-06-02
申请号：US10994529
申请日：2004-11-23
申请人： Yukiyasu Tatsuzawa , Koichi Otake , Hideyuki Yamakawa , Hiroyuki Moro , Toshihiko Kaneshige
发明人： Yukiyasu Tatsuzawa , Koichi Otake , Hideyuki Yamakawa , Hiroyuki Moro , Toshihiko Kaneshige
IPC分类号： G11B7/005 , G11B20/10 , G11B20/18 , G11B27/36 , G11B5/09
CPC分类号： G11B20/10027 , G11B20/10009 , G11B20/10046 , G11B20/10481 , G11B27/36 , G11B2220/2562
摘要： A disk device includes a reading section which reads reflected light and outputs a read signal according to the read reflected light, a processing section which calculates an adjustment value from the read signal, performs predetermined processing on the read signal based on the adjustment value, and outputs a process signal, a detecting section which detects a reading defect in the reading section based on the read signal, a determining section which determines signal quality of the process signal output from the processing section, a storage section which stores the adjustment value calculated by the processing section, in a memory area, based on a result output from the determining section, and a controller which, when the detecting section detects the reading defect, performs control so that the adjustment value is read out of the storage section and is supplied to the processing section.
摘要翻译：磁盘装置包括读取部分，其读取反射光并根据读取的反射光输出读取信号;处理部分，根据读取的信号计算调整值;根据调整值对读取的信号执行预定的处理;以及输出处理信号，检测部，其基于读取信号检测读取部中的读取缺陷;确定部，确定从处理部输出的处理信号的信号质量;存储部，存储由所述处理部分在存储区域中基于从所述确定部分输出的结果，以及控制器，当所述检测部分检测到所述读取缺陷时，进行所述调整值从所述存储部分读出并被提供的控制器到处理部分。

8. 发明申请

US20080002541A1 RECORDING APPARATUS AND RECORD LEARNING METHOD 审中-公开
标题翻译：记录装置和记录学习方法
公开(公告)号：US20080002541A1
公开(公告)日：2008-01-03
申请号：US11766398
申请日：2007-06-21
申请人： Hiroaki MORINO , Koichi Otake , Yukiyasu Tatsuzawa , Hiroyuki Moro , Takahiro Nango , You Yoshioka
发明人： Hiroaki MORINO , Koichi Otake , Yukiyasu Tatsuzawa , Hiroyuki Moro , Takahiro Nango , You Yoshioka
IPC分类号： G11B5/09
CPC分类号： G11B7/00456
摘要： There is provided a recording apparatus which modulates record data by a predetermined modulation method and records record patterns corresponding to the record data on an optical disk, including a random data generator which generates random data as the record data, a data exchange processor which performs exchange processing on the random data so as to equalize a frequency of appearance of each of the record patterns relative to the entire record patterns on the optical disk corresponding to the respective random data, a modulator which modulates the random data subjected to the exchange processing by the predetermined modulation method, an optical head which records record patterns corresponding to the modulated random data on the optical disk, and reproduces the modulated random data from the recorded record patterns, and a record learning unit which calculates correction amounts for recorded positions of the respective record patterns based on the reproduced random data.
摘要翻译：提供了一种记录装置，其通过预定的调制方法对记录数据进行调制，并将与记录数据相对应的记录模式记录在光盘上，该光盘包括产生作为记录数据的随机数据的随机数据发生器，执行交换的数据交换处理器对随机数据进行处理，以便相对于与各个随机数据相对应的光盘上的整个记录图形来均衡每个记录图案的出现频率，调制器，其通过由该随机数据进行交换处理的随机数据进行调制预定的调制方法，记录与光盘上调制的随机数据相对应的记录图形的光头，并从所记录的记录图形中再现调制的随机数据;以及记录学习单元，计算各个记录的记录位置的校正量基于再现的随机数据的图案。

9. 发明申请

US20080002533A1 Information recording and reproducing apparatus, and information recording and reproducing method 审中-公开
标题翻译：信息记录和再现装置以及信息记录和再现方法
公开(公告)号：US20080002533A1
公开(公告)日：2008-01-03
申请号：US11821207
申请日：2007-06-22
申请人： Takahiro Nango , Koichi Otake , Yukiyasu Tatsuzawa , Hiroyuki Moro , Toshifumi Yamamoto , You Yoshioka , Hiroaki Morino
发明人： Takahiro Nango , Koichi Otake , Yukiyasu Tatsuzawa , Hiroyuki Moro , Toshifumi Yamamoto , You Yoshioka , Hiroaki Morino
IPC分类号： G11B20/18
CPC分类号： G11B20/10009 , G11B20/10027 , G11B20/10046 , G11B20/10055 , G11B20/10222 , G11B20/10296 , G11B20/1426 , G11B2020/1287 , G11B2020/1469
摘要： According to one embodiment, in an information recording and reproducing apparatus, a record data correction unit generates correction data for correcting a record waveform generated according to record data. Further, the information recording and reproducing apparatus generates discrimination data for use in pattern discrimination performed to generate the correction data, using decoded data outputted from a PRML signal processing unit and the record data, and outputs the generated discrimination data to the record data correction unit.
摘要翻译：根据一个实施例，在信息记录和再现装置中，记录数据校正单元产生用于校正根据记录数据产生的记录波形的校正数据。此外，信息记录和再现装置使用从PRML信号处理单元输出的解码数据和记录数据产生用于产生校正数据的模式识别中使用的鉴别数据，并将产生的鉴别数据输出到记录数据校正单元。

10. 发明申请

US20080151716A1 OPTICAL DISC RECORDING AND REPRODUCING APPARATUS AND OPTICAL DISC RECORDING AND REPRODUCING METHOD 审中-公开
标题翻译：光盘记录和再现设备和光盘记录和再现方法
公开(公告)号：US20080151716A1
公开(公告)日：2008-06-26
申请号：US11964511
申请日：2007-12-26
申请人： Yukiyasu TATSUZAWA , Koichi Otake , Hideyuki Yamakawa , Toshihiko Kaneshige
发明人： Yukiyasu TATSUZAWA , Koichi Otake , Hideyuki Yamakawa , Toshihiko Kaneshige
IPC分类号： G11B7/00 , G11B20/18 , G11B27/36
CPC分类号： G11B20/10009 , G11B7/00375 , G11B7/00456 , G11B7/1267 , G11B20/10055 , G11B20/10083 , G11B20/10092 , G11B20/10101 , G11B20/10425 , G11B20/18
摘要： An optical disc recording and reproducing apparatus which reproduces data by the PRML scheme includes a recording waveform generating unit for generating a recording waveform, a reproducing unit for reproducing the recorded data to generate reproduction data, a defect determining unit for determining whether or not a defect is included in a reproduction signal, a reproduction state determining unit for determining whether or not the reproduction state is stable, and a recording learning unit for performing recording learning for determining a parameter of a recording waveform on the basis of the reproduction data. The recording learning unit performs the recording learning on the basis of the reproduction data acquired when the reproduction state is stable.
摘要翻译：通过PRML方式再现数据的光盘记录和再现装置包括用于产生记录波形的记录波形生成单元，用于再现记录数据以产生再现数据的再现单元，用于确定缺陷的缺陷确定单元被包括在再现信号中，再现状态确定单元，用于确定再现状态是否稳定;以及记录学习单元，用于根据再现数据执行用于确定记录波形的参数的记录学习。记录学习单元基于再现状态稳定时获取的再现数据执行记录学习。

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