公开(公告)号：US20120044103A1

公开(公告)日：2012-02-23

申请号：US13287617

申请日：2011-11-02

Applicant: Rie Kaihara ,  Masakazu Shigemori ,  Youichi Ogura ,  Junichi Naka ,  Tsuyoshi Matsushita

Inventor： Rie Kaihara ,  Masakazu Shigemori ,  Youichi Ogura ,  Junichi Naka ,  Tsuyoshi Matsushita

IPC: H03M1/36

CPC classification number: H03M1/204 ,  H03M1/365

Abstract: A parallel interpolation A/D converter includes a reference voltage generation circuit configured to generate (m+1) different reference voltages VR1-VRm+1, where m is a positive integer, and VR1

Abstract translation: 并行内插A / D转换器包括：参考电压产生电路，被配置为产生（m + 1）不同的参考电压VR1-VRm + 1，其中m是正整数，VR1

公开(公告)号：US08022847B2

公开(公告)日：2011-09-20

申请号：US12666722

申请日：2008-06-16

Applicant: Rie Kaihara ,  Youichi Ogura

Inventor： Rie Kaihara ,  Youichi Ogura

IPC: H03M1/06

CPC classification number: G11B20/10009 ,  G11B20/10027 ,  G11B20/10037 ,  G11B20/10046 ,  G11B20/10203 ,  G11B2220/216 ,  G11B2220/2562 ,  G11B2220/2575

Abstract: A signal processing device, even when a steep difference in DC level is included in a signal read from a disc such as a DVD-RAM format, cuts off the DC level and pulls the read signal into an appropriate A/D input level. A steep difference in DC level between a data section and a CAPA section is absorbed by a first offset unit, and an asymmetry which occurs due to variations in the disc manufacturing stage is corrected by a second offset unit. Further, a control signal for operating the two offset units exclusively is generated by a controller, thereby controlling both offset units.

Abstract translation: 信号处理装置即使当从诸如DVD-RAM格式的盘读取的信号中包括DC电平的陡峭差异时，切断DC电平并将读取的信号拉至适当的A / D输入电平。 数据部分和CAPA部分之间的直流电平的急剧差异由第一偏移单元吸收，并且由于盘制造阶段的变化而发生的不对称性被第二偏移单元校正。 此外，用于仅由控制器产生用于操作两个偏移单元的控制信号，从而控制两个偏移单元。

公开(公告)号：US20100188275A1

公开(公告)日：2010-07-29

申请号：US12666722

申请日：2008-06-16

Applicant: Rie Kaihara ,  Youichi Ogura

Inventor： Rie Kaihara ,  Youichi Ogura

IPC: H03M1/12

CPC classification number: G11B20/10009 ,  G11B20/10027 ,  G11B20/10037 ,  G11B20/10046 ,  G11B20/10203 ,  G11B2220/216 ,  G11B2220/2562 ,  G11B2220/2575

Abstract: It is an object of the present invention to provide a signal processing device which, even when a steep difference in DC level is included in a signal read from a disc such as a DVD-RAM format, cuts off the DC level and pulls the read signal into an appropriate A/D input level with an attempt to cost reduction. A steep difference in DC level between a data section and a CAPA section is absorbed by a first offset unit 1, and an asymmetry which occurs due to variations in the disc manufacturing stage is corrected by a second offset unit 2. Further, a control signal for operating the two offset units exclusively is generated by a controller 7, thereby to control the both offset units.

Abstract translation: 本发明的目的是提供一种信号处理装置，即使当从诸如DVD-RAM格式的盘读取的信号中包括DC电平的陡峭差异时，切断DC电平并拉出读取 信号转换成适当的A / D输入电平，试图降低成本。 数据部分和CAPA部分之间的直流电平的陡峭差异由第一偏移单元1吸收，并且由于盘制造阶段的变化而发生的不对称性被第二偏移单元2校正。此外，控制信号 用于仅由控制器7产生两个偏移单元的操作，从而控制两个偏移单元。

公开(公告)号：US20100027398A1

公开(公告)日：2010-02-04

申请号：US12519938

申请日：2007-12-20

Applicant: Takahiro Ichikura ,  Hideo Sakon ,  Yorikazu Takao ,  Daigo Senoo ,  Youichi Ogura

Inventor： Takahiro Ichikura ,  Hideo Sakon ,  Yorikazu Takao ,  Daigo Senoo ,  Youichi Ogura

IPC: G11B7/00

CPC classification number: G11B7/00458 ,  G11B7/00454 ,  G11B7/0053 ,  G11B20/10009 ,  G11B20/10222 ,  G11B20/1403 ,  G11B2020/1274 ,  G11B2020/1287 ,  G11B2220/215 ,  G11B2220/2562

Abstract: There is provided an optical disc device which can evaluate in a short time as to whether an optical disc is recorded with satisfying the standard or not.An optical disc device for measuring a recording deviation amount of data recorded on an optical disc on which physical addresses are previously provided, includes an address detection circuit which detects the physical address and outputs a physical address detection signal, a timer which is operated in synchronization with reproduced data from the optical disc, a recording deviation amount measurement circuit which measures the recording deviation amount of data recorded on the optical disc by using the physical address detection signal and the count value of the timer, a memory which stores the measured recording deviation amount, and a data transfer circuit which transfers the recording deviation amount to the memory.

Abstract translation: 提供了一种能够在短时间内评估光盘是否满足标准的光盘的光盘装置。 用于测量记录在预先提供了物理地址的光盘上的数据的记录偏差量的光盘装置包括检测物理地址并输出物理地址检测信号的地址检测电路，同步操作的定时器 来自光盘的再现数据，记录偏差量测量电路，其通过使用物理地址检测信号和计时器的计数值来测量记录在光盘上的数据的记录偏差量;存储器，其存储测量的记录偏差 以及将记录偏差量传送到存储器的数据传送电路。

公开(公告)号：US07558171B2

公开(公告)日：2009-07-07

申请号：US11269586

申请日：2005-11-09

Applicant: Youichi Ogura ,  Toshihiko Takahashi ,  Hiroaki Hayashi ,  Teruhiko Izumi ,  Dai Ichiryu ,  Shinichi Konishi

Inventor： Youichi Ogura ,  Toshihiko Takahashi ,  Hiroaki Hayashi ,  Teruhiko Izumi ,  Dai Ichiryu ,  Shinichi Konishi

IPC: G11B15/52

CPC classification number: G11B7/0053 ,  G11B7/00375 ,  G11B7/1263 ,  G11B7/24082 ,  G11B20/10009 ,  G11B20/1403 ,  G11B27/24 ,  G11B2220/2575

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07310292B2

公开(公告)日：2007-12-18

申请号：US11405589

申请日：2006-04-18

Applicant: Youichi Ogura

Inventor： Youichi Ogura

IPC: G11B20/10

CPC classification number: G11B20/10111 ,  G11B20/10 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/10055 ,  G11B20/10166 ,  G11B20/10212 ,  G11B20/10222 ,  G11B20/10296 ,  G11B20/10425 ,  G11B20/1403 ,  G11B20/1496 ,  G11B20/225 ,  H03H17/06

Abstract: A data demodulation process rate is varied according to a reproduction state, thereby reducing power consumption while maintaining a reading performance in a favorable state. A channel rate process data demodulation device performs a data demodulation process by employing channel bit frequency. Further, a half rate process data demodulation device performs a data demodulation process by employing frequency half as high as the channel bit frequency. These devices demodulate digital data from an optical recording medium. A process rate switching device switches a process rate at data demodulation, whereby demodulation is performed by switching between the data demodulation devices according to a quality of a reproduction signal, so as to reproduce the digital data recorded on the optical recording medium.

Abstract translation: 数据解调处理速率根据再现状态而变化，从而在保持读取性能的同时保持良好的状态，从而降低功耗。 信道速率处理数据解调装置通过采用信道比特频率进行数据解调处理。 此外，半速率处理数据解调装置通过使用频率一半与信道位频率一样高的数据解调处理。 这些设备从光学记录介质解调数字数据。 处理速率切换装置在数据解调时切换处理速率，由此通过根据再现信号的质量在数据解调装置之间切换来进行解调，以便再现记录在光学记录介质上的数字数据。

公开(公告)号：US20060187799A1

公开(公告)日：2006-08-24

申请号：US11405589

申请日：2006-04-18

Applicant: Youichi Ogura

Inventor： Youichi Ogura

IPC: G11B7/00

CPC classification number: G11B20/10111 ,  G11B20/10 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/10055 ,  G11B20/10166 ,  G11B20/10212 ,  G11B20/10222 ,  G11B20/10296 ,  G11B20/10425 ,  G11B20/1403 ,  G11B20/1496 ,  G11B20/225 ,  H03H17/06

Abstract: A data demodulation process rate is varied according to a reproduction state, thereby reducing power consumption while maintaining a reading performance in a favorable state. A channel rate process data demodulation device performs a data demodulation process by employing channel bit frequency. Further, a half rate process data demodulation device performs a data demodulation process by employing frequency half as high as the channel bit frequency. These devices demodulate digital data from an optical recording medium. A process rate switching device switches a process rate at data demodulation, whereby demodulation is performed by switching between the data demodulation devices according to a quality of a reproduction signal, so as to reproduce the digital data recorded on the optical recording medium.

Abstract translation: 数据解调处理速率根据再现状态而变化，从而在保持读取性能的同时保持良好的状态，从而降低功耗。 信道速率处理数据解调装置通过采用信道比特频率进行数据解调处理。 此外，半速率处理数据解调装置通过使用频率一半与信道位频率一样高的数据解调处理。 这些设备从光学记录介质解调数字数据。 处理速率切换装置在数据解调时切换处理速率，由此通过根据再现信号的质量在数据解调装置之间切换来进行解调，以便再现记录在光学记录介质上的数字数据。

公开(公告)号：US06792063B1

公开(公告)日：2004-09-14

申请号：US09601796

申请日：2000-09-22

Applicant: Youichi Ogura

Inventor： Youichi Ogura

IPC: H03D324

CPC classification number: G11B20/10222 ,  G11B20/10009 ,  G11B20/10037 ,  G11B20/10046 ,  G11B20/1403 ,  G11B27/3027 ,  G11B2220/2562 ,  H03L7/087 ,  H03L7/113

Abstract: The present invention has an object to perform phase synchronization pull-in at high speed and with good stability. A predetermined frequency band of a reproduced signal is emphasized by a waveform equalization means 1. Its output signal is sampled by an A/D converter 2 using a reproduction clock. Low-band noises of a sampled signal are suppressed by a low-band noise suppression means 3. Then, cycle information is detected from a specific pattern length or pattern interval using a cycle detection means with high precision and high efficiency. The obtained cycle information is converted into a frequency error by a frequency error detector 9. On the other hand, a phase error is detected by a phase error detector 10 from the output of the low-band noise suppression means 3. The frequency error and the phase error are passed through loop filters and thereafter added, whereby an oscillator 15 which generates a reproduction clock is controlled.

Abstract translation: 本发明的目的是以高速和高稳定性进行相位同步拉入。再现信号的预定频带被波形均衡装置1强调。其输出信号由A / D转换器2 使用再现时钟。 通过低频带噪声抑制装置3抑制采样信号的低频带噪声。然后，使用具有高精度和高效率的周期检测装置，从特定图案长度或图案间隔检测周期信息。 所获得的周期信息由频率误差检测器9转换成频率误差。另一方面，相位误差由相位误差检测器10从低频噪声抑制装置3的输出检测。频率误差和 相位误差通过环路滤波器，然后加入，从而控制产生再现时钟的振荡器15。

公开(公告)号：US07433286B2

公开(公告)日：2008-10-07

申请号：US11372051

申请日：2006-03-10

Applicant: Youichi Ogura ,  Toshihiko Takahashi ,  Shinichi Konishi

Inventor： Youichi Ogura ,  Toshihiko Takahashi ,  Shinichi Konishi

IPC: G11B7/00

CPC classification number: G11B20/10212 ,  G11B20/10037 ,  G11B20/10046 ,  G11B20/10194 ,  G11B20/10425 ,  G11B20/10481 ,  G11B20/14 ,  G11B20/22 ,  G11B2220/2537

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07428195B2

公开(公告)日：2008-09-23

申请号：US10530276

申请日：2004-05-14

Applicant: Kazutoshi Aida ,  Youichi Ogura ,  Toshihiko Takahashi

Inventor： Kazutoshi Aida ,  Youichi Ogura ,  Toshihiko Takahashi

IPC: G11B7/005

CPC classification number: G11B20/10194 ,  G11B7/005

Abstract: 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.

Abstract translation: 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。