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1. 发明授权

US07558171B2 Optical disc recording/playback apparatus 失效
标题翻译：光盘记录/播放装置
公开(公告)号：US07558171B2
公开(公告)日：2009-07-07
申请号：US11269586
申请日：2005-11-09
申请人： Youichi Ogura , Toshihiko Takahashi , Hiroaki Hayashi , Teruhiko Izumi , Dai Ichiryu , Shinichi Konishi
发明人： Youichi Ogura , Toshihiko Takahashi , Hiroaki Hayashi , Teruhiko Izumi , Dai Ichiryu , Shinichi Konishi
IPC分类号： G11B15/52
CPC分类号： G11B7/0053 , G11B7/00375 , G11B7/1263 , G11B7/24082 , G11B20/10009 , G11B20/1403 , G11B27/24 , G11B2220/2575
摘要： An optical disc recording/playback apparatus is provided with a first AD converter 35 for shaping a push-pull signal 14 detected from an optical disc medium 1 by a light difference signal shaping circuit 21, and converting the signal into a digital sampling signal 38 using a sampling clock 37 synchronized with a channel frequency; a series of means for detecting wobble amplitude information 77 during recording from the digital sampling signal 38; a series of means for detecting address polarity information 60 and address position information during playback; and a recording laser power control circuit 113 for controlling a recording laser power to a power suited for recording on the basis of the wobble amplitude information.
摘要翻译：光盘记录/重放装置设置有第一AD转换器35，用于通过光差信号整形电路21对从光盘介质1检测到的推挽信号14进行整形，并且将信号转换成数字采样信号38，使用与信道频率同步的采样时钟37; 用于在从数字采样信号38记录期间检测摆动幅度信息77的一系列装置; 用于检测地址极性信息60和播放期间的地址位置信息的一系列装置; 以及记录激光功率控制电路113，用于根据摆动振幅信息将记录激光功率控制到适于记录的功率。

2. 发明申请

US20060109770A1 Optical disc recording/playback apparatus 失效
标题翻译：光盘记录/播放装置
公开(公告)号：US20060109770A1
公开(公告)日：2006-05-25
申请号：US11269586
申请日：2005-11-09
申请人： Youichi Ogura , Toshihiko Takahashi , Hiroaki Hayashi , Teruhiko Izumi , Dai Ichiryu , Shinichi Konishi
发明人： Youichi Ogura , Toshihiko Takahashi , Hiroaki Hayashi , Teruhiko Izumi , Dai Ichiryu , Shinichi Konishi
IPC分类号： G11B7/00
CPC分类号： G11B7/0053 , G11B7/00375 , G11B7/1263 , G11B7/24082 , G11B20/10009 , G11B20/1403 , G11B27/24 , G11B2220/2575
摘要： An optical disc recording/playback apparatus is provided with a first AD converter 35 for shaping a push-pull signal 14 detected from an optical disc medium 1 by a light difference signal shaping circuit 21, and converting the signal into a digital sampling signal 38 using a sampling clock 37 synchronized with a channel frequency; a series of means for detecting wobble amplitude information 77 during recording from the digital sampling signal 38; a series of means for detecting address polarity information 60 and address position information during playback; and a recording laser power control circuit 113 for controlling a recording laser power to a power suited for recording on the basis of the wobble amplitude information.
摘要翻译：光盘记录/重放装置设置有第一AD转换器35，用于通过光差信号整形电路21对从光盘介质1检测到的推挽信号14进行整形，并且将信号转换成数字采样信号38，使用与信道频率同步的采样时钟37; 用于在从数字采样信号38记录期间检测摆动幅度信息77的一系列装置; 用于检测地址极性信息60和播放期间的地址位置信息的一系列装置; 以及记录激光功率控制电路113，用于根据摆动振幅信息将记录激光功率控制到适于记录的功率。

3. 发明授权

US07539097B2 Optical disk device 失效
标题翻译：光盘装置
公开(公告)号：US07539097B2
公开(公告)日：2009-05-26
申请号：US11234212
申请日：2005-09-26
申请人： Youichi Ogura , Toshihiko Takahashi , Teruhiko Izumi , Shinichi Konishi , Hironori Deguchi , Takamasa Sakai
发明人： Youichi Ogura , Toshihiko Takahashi , Teruhiko Izumi , Shinichi Konishi , Hironori Deguchi , Takamasa Sakai
IPC分类号： G11B20/00
CPC分类号： G11B20/10009 , G11B7/131 , G11B20/1403 , G11B2020/122 , G11B2020/1239 , G11B2020/1268
摘要： An optical disk device is provided with a first analog-to-digital converter for converting a push-pull signal detected from an optical disc medium into a digital sampling signal according to a sampling clock in the vicinity of a channel frequency. The optical disk device also includes an address polarity information detection circuit for detecting address polarity information from the digital sampling signal, and an address position information detection circuit for detecting address position information from the digital sampling signal while maintaining continuity.
摘要翻译：光盘装置具有第一模数转换器，用于根据通道频率附近的采样时钟将从光盘介质检测到的推挽信号转换为数字采样信号。光盘装置还包括用于从数字采样信号检测地址极性信息的地址极性信息检测电路，以及用于在保持连续性的同时从数字采样信号检测地址位置信息的地址位置信息检测电路。

4. 发明申请

US20060077828A1 Optical disk device 失效
标题翻译：光盘装置
公开(公告)号：US20060077828A1
公开(公告)日：2006-04-13
申请号：US11234212
申请日：2005-09-26
申请人： Youichi Ogura , Toshihiko Takahashi , Teruhiko Izumi , Shinichi Konishi , Hironori Deguchi , Takamasa Sakai
发明人： Youichi Ogura , Toshihiko Takahashi , Teruhiko Izumi , Shinichi Konishi , Hironori Deguchi , Takamasa Sakai
IPC分类号： G11B20/10
CPC分类号： G11B20/10009 , G11B7/131 , G11B20/1403 , G11B2020/122 , G11B2020/1239 , G11B2020/1268
摘要： An optical disk device is provided with a first analog-to-digital converter for converting a push-pull signal detected from an optical disc medium into a digital sampling signal according to a sampling clock in the vicinity of a channel frequency, an address polarity information detection circuit for detecting address polarity information from the digital sampling signal, and an address position information detection circuit 58 for detecting address position information from the digital sapling signal while maintaining continuity. Therefore, it is possible to detect the address polarity information and the address position information stably and accurately even during high-speed recording/playback.
摘要翻译：光盘装置具有第一模数转换器，用于根据通道频率附近的采样时钟将从光盘介质检测到的推挽信号转换为数字采样信号，地址极性信息用于从数字采样信号检测地址极性信息的检测电路，以及用于在保持连续性的同时从数字树苗信号中检测地址位置信息的地址位置信息检测电路58。因此，即使在高速记录/重放期间，也可以稳定且精确地检测地址极性信息和地址位置信息。

5. 发明申请

US20060208766A1 Jitter detection apparatus 失效
标题翻译：抖动检测装置
公开(公告)号：US20060208766A1
公开(公告)日：2006-09-21
申请号：US11372051
申请日：2006-03-10
申请人： Youichi Ogura , Toshihiko Takahashi , Shinichi Konishi
发明人： Youichi Ogura , Toshihiko Takahashi , Shinichi Konishi
IPC分类号： H03D13/00 , G01R25/00
CPC分类号： G11B20/10212 , G11B20/10037 , G11B20/10046 , G11B20/10194 , G11B20/10425 , G11B20/10481 , G11B20/14 , G11B20/22 , G11B2220/2537
摘要： In a jitter detection apparatus, a playback RF signal 3 detected from an optical disc medium 1 is subjected to waveform shaping, and thereafter, converted into a digital RF signal 6 with a sampling clock having a cycle twice as long as a cycle of a channel clock. Thereafter, an offset variation in a high-frequency band is corrected by an offset correction circuit 9, and data which are missing in the time direction are restored by a Nyquist interpolation filter 23. Then, positions where jitter is to be extracted are selected from an output signal of the Nyquist interpolation filter 23, by a jitter detection preprocessing circuit 28, according to the playback speed of the optical disc medium 1 and the arithmetic capacity of a digital signal operation circuit 29, whereby highly accurate jitters can be extracted by using the digital signal operation circuit 29.
摘要翻译：在抖动检测装置中，从光盘介质1检测到的重放RF信号3经受波形整形，然后被转换成具有采样时钟的数字RF信号6，采样时钟的周期是通道的周期的两倍时钟。此后，通过偏移校正电路9校正高频带中的偏移变化，并且通过奈奎斯特内插滤波器23恢复在时间方向上丢失的数据。然后，从提取抖动的位置选择奈奎斯特插值滤波器23的输出信号，通过抖动检测预处理电路28，根据光盘介质1的重放速度和数字信号操作电路29的运算能力，由此可以通过使用高精度的抖动来提取高精度的抖动数字信号运算电路29。

6. 发明授权

US07433286B2 Jitter detection apparatus 失效
标题翻译：抖动检测装置
公开(公告)号：US07433286B2
公开(公告)日：2008-10-07
申请号：US11372051
申请日：2006-03-10
申请人： Youichi Ogura , Toshihiko Takahashi , Shinichi Konishi
发明人： Youichi Ogura , Toshihiko Takahashi , Shinichi Konishi
IPC分类号： G11B7/00
CPC分类号： G11B20/10212 , G11B20/10037 , G11B20/10046 , G11B20/10194 , G11B20/10425 , G11B20/10481 , G11B20/14 , G11B20/22 , G11B2220/2537
摘要： In a jitter detection apparatus, a playback RF signal 3 detected from an optical disc medium 1 is subjected to waveform shaping, and thereafter, converted into a digital RF signal 6 with a sampling clock having a cycle twice as long as a cycle of a channel clock. Thereafter, an offset variation in a high-frequency band is corrected by an offset correction circuit 9, and data that are missing in the time direction are restored by a Nyquist interpolation filter 23. Then, positions where jitter is to be extracted are selected from an output signal of the Nyquist interpolation filter 23, by a jitter detection preprocessing circuit 28, according to the playback speed of the optical disc medium 1 and the arithmetic capacity of a digital signal operation circuit 29, whereby highly accurate jitters can be extracted by using the digital signal operation circuit 29.
摘要翻译：在抖动检测装置中，从光盘介质1检测到的重放RF信号3经受波形整形，然后被转换成具有采样时钟的数字RF信号6，采样时钟的周期是通道的周期的两倍时钟。此后，通过偏移校正电路9校正高频带中的偏移变化，并且通过奈奎斯特内插滤波器23恢复在时间方向上丢失的数据。然后，根据光盘介质1的重放速度和数字信号操作的运算能力，由抖动检测预处理电路28从奈奎斯特插值滤波器23的输出信号中选择要提取抖动的位置电路29，由此可以通过使用数字信号操作电路29提取高精度的抖动。

7. 发明授权

US07525887B2 Playback signal processing apparatus and optical disc device 失效
标题翻译：播放信号处理装置和光盘装置
公开(公告)号：US07525887B2
公开(公告)日：2009-04-28
申请号：US10871062
申请日：2004-06-21
申请人： Youichi Ogura , Toshihiko Takahashi , Kazutoshi Aida , Kouji Okamoto
发明人： Youichi Ogura , Toshihiko Takahashi , Kazutoshi Aida , Kouji Okamoto
IPC分类号： G11B15/52
CPC分类号： G11B20/10425 , G11B20/10009 , G11B20/10037 , G11B20/10055 , G11B20/10222 , G11B20/1403 , G11B20/22 , G11B2020/1288 , G11B2220/2541
摘要： When generating a sampling clock of an A/D converter for digitizing a playback signal from an optical disc, an over sampling clock generated by a PLL is used. Further, zerocross position information and reference information of a playback digital signal that is obtained by A/D conversion using the over sampling clock are converted into those synchronized with the channel bit clock by an operation cycle conversion unit, and then supplied to a PRML signal processing unit and a level judgement binarization unit.
摘要翻译：当产生用于数字化来自光盘的重放信号的A / D转换器的采样时钟时，使用由PLL产生的过采样时钟。此外，通过使用过采样时钟的A / D转换获得的重放数字信号的零交叉位置信息和参考信息被转换为与通道位时钟同步的操作周期转换单元，然后被提供给PRML信号处理单元和级别判断二值化单元。

8. 发明授权

US07428195B2 Information reproduction apparatus and information reproduction method 失效
标题翻译：信息再现装置和信息再现方法
公开(公告)号：US07428195B2
公开(公告)日：2008-09-23
申请号：US10530276
申请日：2004-05-14
申请人： Kazutoshi Aida , Youichi Ogura , Toshihiko Takahashi
发明人： Kazutoshi Aida , Youichi Ogura , Toshihiko Takahashi
IPC分类号： G11B7/005
CPC分类号： G11B20/10194 , G11B7/005
摘要： An information reproduction apparatus and method according to the present invention are provided so as to solve the problem that signal quality is degraded in a normal signal part when always performing a correction of a transient in reproducing information recorded in a medium, and the sag cancellation controller (103) detects whether the pickup output signal (S101) is normal or abnormal, and the sag cancellation part (104) performs a correction of a transient only during a period when the pickup output signal (S101) is detected as abnormal, thereby preventing degradation of signal quality, which is caused by performing a correction of a transient on a normal signal part, and an appropriate correction of a transient can be performed on an abnormal signal part, thereby enabling a stable reproduced signal (S104) to be obtained.
摘要翻译：提供了根据本发明的信息再现装置和方法，以解决在总是执行对记录在介质中的再现信息中的瞬态的校正时的正常信号部分中的信号质量下降的问题，以及下垂消除控制器（103）检测拾取输出信号（S101）是正常还是异常，并且下垂消除部分（104）仅在检测到输出信号（S101）被检测到异常的时段期间执行瞬变的校正，从而防止由于对正常信号部分进行瞬变的校正而引起的信号质量的劣化，并且可以对异常信号部分进行适当的瞬变校正，从而使得稳定的再现信号（S104）能够得到。

9. 发明申请

US20060062118A1 Information reproduction device and information reproduction method 失效
标题翻译：信息再现装置和信息再现方法
公开(公告)号：US20060062118A1
公开(公告)日：2006-03-23
申请号：US10530276
申请日：2004-05-14
申请人： Kazutoshi Aida , Youichi Ogura , Toshihiko Takahashi
发明人： Kazutoshi Aida , Youichi Ogura , Toshihiko Takahashi
IPC分类号： G11B7/00 , G11B20/00
CPC分类号： G11B20/10194 , G11B7/005
摘要： An information reproduction apparatus and method according to the present invention are provided so as to solve the problem that signal quality is degraded in a normal signal part when always performing a correction of a transient in reproducing information recorded in a medium, and the sag cancellation controller (103) detects whether the pickup output signal (S101) is normal or abnormal, and the sag cancellation part (104) performs a correction of a transient only during a period when the pickup output signal (S101) is detected as abnormal, thereby preventing degradation of signal quality, which is caused by performing a correction of a transient on a normal signal part, and an appropriate correction of a transient can be performed on an abnormal signal part, thereby enabling a stable reproduced signal (S104) to be obtained.
摘要翻译：提供了根据本发明的信息再现装置和方法，以解决在总是执行对记录在介质中的再现信息中的瞬态的校正时的正常信号部分中的信号质量下降的问题，以及下垂消除控制器（103）检测拾取输出信号（S101）是正常还是异常，并且下垂消除部分（104）仅在检测到输出信号（S101）被检测到异常的时段期间执行瞬变的校正，从而防止由于对正常信号部分进行瞬变的校正而引起的信号质量的劣化，并且可以对异常信号部分进行适当的瞬变校正，从而使得稳定的再现信号（S104）能够得到。

10. 发明申请

US20050018578A1 Playback signal processing apparatus and optical disc device 失效
标题翻译：播放信号处理装置和光盘装置
公开(公告)号：US20050018578A1
公开(公告)日：2005-01-27
申请号：US10871062
申请日：2004-06-21
申请人： Youichi Ogura , Toshihiko Takahashi , Kazutoshi Aida , Kouji Okamoto
发明人： Youichi Ogura , Toshihiko Takahashi , Kazutoshi Aida , Kouji Okamoto
IPC分类号： G11B3/00 , G11B5/09 , G11B20/10 , G11B20/14 , G11B20/22
CPC分类号： G11B20/10425 , G11B20/10009 , G11B20/10037 , G11B20/10055 , G11B20/10222 , G11B20/1403 , G11B20/22 , G11B2020/1288 , G11B2220/2541
摘要： When generating a sampling clock of an A/D converter for digitizing a playback signal from an optical disc, an over sampling clock generated by a PLL is used. Further, zerocross position information and reference information of a playback digital signal that is obtained by A/D conversion using the over sampling clock are converted into those synchronized with the channel bit clock by an operation cycle conversion unit, and then supplied to a PRML signal processing unit and a level judgement binarization unit.
摘要翻译：当产生用于数字化来自光盘的重放信号的A / D转换器的采样时钟时，使用由PLL产生的过采样时钟。此外，通过使用过采样时钟的A / D转换获得的重放数字信号的零交叉位置信息和参考信息被转换为与通道位时钟同步的操作周期转换单元，然后被提供给PRML信号处理单元和级别判断二值化单元。

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