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1. 发明授权

US6081485A Optical disc accessing apparatus capable of preventing error in the mirror signal 有权
标题翻译：能够防止镜像信号错误的光盘存取装置
公开(公告)号：US6081485A
公开(公告)日：2000-06-27
申请号：US189969
申请日：1998-11-10
申请人： Minoru Minase , Toru Miura , Hiroyuki Onda , Junichi Kanenaga
发明人： Minoru Minase , Toru Miura , Hiroyuki Onda , Junichi Kanenaga
IPC分类号： G11B7/00 , G11B7/005 , G11B7/085 , G11B7/09 , G11B17/22
CPC分类号： G11B7/08541 , G11B7/0945
摘要： An optical disc apparatus prevents an occurrence of an error in the mirror signal due to a change in a reproducing speed or usage of different kinds of optical discs. A mirror circuit generates a mirror signal by comparing a level of a bottom signal with a level of a reference level signal. The bottom signal is detected from a reflection signal obtained by optically scanning the optical disc. A reference level control circuit generates a reference level control signal based on the reproducing speed. A reference level signal setting circuit sets a level of the reference level signal in accordance with the reference level control signal.
摘要翻译：光盘装置防止由于再现速度的变化或不同种类的光盘的使用引起的镜像信号中的误差的发生。镜像电路通过将底部信号的电平与参考电平信号的电平进行比较来产生镜像信号。从通过光学扫描光盘获得的反射信号检测底部信号。参考电平控制电路基于再现速度产生参考电平控制信号。基准电平信号设定电路根据基准电平控制信号设定基准电平信号的电平。

2. 发明授权

US06310845B1 Optical disk device 有权
标题翻译：光盘装置
公开(公告)号：US06310845B1
公开(公告)日：2001-10-30
申请号：US09274921
申请日：1999-03-23
申请人： Junichi Kanenaga , Hiroyuki Onda
发明人： Junichi Kanenaga , Hiroyuki Onda
IPC分类号： G11B700
CPC分类号： G11B20/10009 , G11B7/0037 , G11B19/06 , G11B19/26 , G11B20/1816
摘要： An optical disk device has a unit for counting data read errors from an optical disk and a unit for reducing a playback speed of an optical disk. When a number of data read errors occurring in a predetermined period of time exceeds a predetermined value the playback speed reducing unit reduces the playback speed of the optical disk. As a result, repetition of error detection and consequent reduction in playback speed with each data read command when reading defective sectors of an optical disk can be prevented and the time required for error detection and speed reduction thereby eliminated, greatly improving overall average playback speed.
摘要翻译：光盘装置具有用于从光盘计数数据读取错误的单元和用于降低光盘的重放速度的单元。当在预定时间段内发生的多个数据读取错误超过预定值时，重放速度降低单元降低光盘的播放速度。结果，可以防止在读取光盘的缺陷扇区时利用每个数据读取命令重复错误检测和随之而来的重放速度的降低，从而消除了错误检测和速度降低所需的时间，从而大大提高了总体平均回放速度。

3. 发明授权

US06246651B1 Disk apparatus in which an improved current supply control is performed to effectively reduce a current consumption 有权
标题翻译：其中执行改进的电流供应控制以有效降低电流消耗的磁盘设备
公开(公告)号：US06246651B1
公开(公告)日：2001-06-12
申请号：US09187882
申请日：1998-11-06
申请人： Shigeru Fukinuki , Junichi Kanenaga
发明人： Shigeru Fukinuki , Junichi Kanenaga
IPC分类号： G11B2010
CPC分类号： G11B21/083 , G11B7/08505 , G11B19/20 , G11B20/10 , G11B2020/10916
摘要： A disk apparatus in which a control unit performs a seek control includes a disk motor which rotates a disk placed at a loaded position in the disk apparatus. A motor driver controls the disk motor such that the disk is rotated by the disk motor at a controlled speed. A read/write head reads information from or writes information to the disk when the disk is rotated by the disk motor at the controlled speed. A head shifting unit shifts the head in a radial direction of the disk to a target location thereof when a seek is performed. A current supply control unit controls current supplied to the disk motor during the seek. In the disk apparatus, the current supply control unit cuts off the current supply to the disk motor for a predetermined period after a start of the seek.
摘要翻译：其中控制单元执行寻道控制的盘装置包括盘放置在盘装置中的装载位置的盘的马达。电动机驱动器控制盘式电动机，使得盘以受控的速度由盘式电动机旋转。当磁盘由磁盘电机以受控的速度旋转时，读/写头从盘读取信息或向盘写入信息。当执行搜索时，头移动单元将磁盘的盘的径向方向移动到其目标位置。电流供应控制单元控制在寻道期间提供给磁盘电机的电流。在磁盘装置中，电源供应控制单元在搜索开始之后的预定时间段内切断对磁盘马达的电流供应。

4. 发明申请

US20080130437A1 Optical disk apparatus and land-pre-pit reproducing method 审中-公开
标题翻译：光盘装置和地预制凹坑再现方法
公开(公告)号：US20080130437A1
公开(公告)日：2008-06-05
申请号：US11801387
申请日：2007-05-09
申请人： Junichi Kanenaga , Kensuke Fujimoto
发明人： Junichi Kanenaga , Kensuke Fujimoto
IPC分类号： G11B15/52
CPC分类号： G11B7/0053
摘要： In an optical disk apparatus using an optical disk having groove tracks and land tracks alternately arranged therein and land pre-pits indicating position information defined in the land tracks, the optical disk is irradiated with a light beam and light reflected from the optical disk is received on divisional light-receiving surfaces to generate a light detection signal for each of the light-receiving surfaces. A pre-pit component signal corresponding to the land pre-pits is generated based on the light detection signals. A binarization-level signal is output. A pre-pit detection signal is generated by comparing the pre-pit component signal with the binarization-level signal. The position information is obtained using the pre-pit detection signal. Pulses of the pre-pit detection signal are counted in units of a period that is based on the position information. The signal level of the binarization-level signal is controlled based on the count values.
摘要翻译：在使用具有交替布置在其中的凹槽轨道和脊迹区域的光盘的光盘装置中，并且在脊迹道中指定定位的位置信息的前置凹坑，光盘被光束照射并且从光盘反射的光被接收在分开的光接收表面上，以产生每个光接收表面的光检测信号。基于光检测信号生成与陆地预制凹坑对应的预凹坑分量信号。输出二进制级信号。通过将前置凹坑分量信号与二进制级信号进行比较来产生预凹坑检测信号。使用预凹坑检测信号获得位置信息。预处理坑检测信号的脉冲以基于位置信息的周期为单位进行计数。二进制级信号的信号电平根据计数值进行控制。

5. 发明授权

US07551526B2 Disk drive apparatus and spherical aberration correcting method 失效
标题翻译：磁盘驱动装置和球面像差校正方法
公开(公告)号：US07551526B2
公开(公告)日：2009-06-23
申请号：US11278572
申请日：2006-04-04
申请人： Junichi Kanenaga
发明人： Junichi Kanenaga
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G11B7/0941 , G11B2007/0013
摘要： A disk drive apparatus includes: an optical pickup irradiating a laser beam onto an optical disk having one or more recording layers through an objective lens and receiving the laser beam reflected from the optical disk; a driving unit moving the objective lens in an optical axial direction of the laser beam to the optical disk in accordance with a driving signal; an interlayer distance measuring unit measuring interlayer distances of a plurality of recording layers of the optical disk; and a spherical aberration correcting unit obtaining a spherical aberration correction value for correcting a spherical aberration due to the objective lens to one of the recording layers of the optical disk. A spherical aberration correction value to another one of the recording layers is obtained on the basis of the measured interlayer distances and the obtained spherical aberration correction value to the one recording layer.
摘要翻译：磁盘驱动装置包括：通过物镜将激光束照射到具有一个或多个记录层的光盘并接收从光盘反射的激光束的光学拾取器; 驱动单元，其根据驱动信号将激光束的光轴方向的物镜移动到光盘; 测量所述光盘的多个记录层的层间距离的层间距离测量单元; 以及球面像差校正单元，其获得用于将由于物镜导致的球面像差校正到光盘的记录层之一的球面像差校正值。基于测量的层间距离和所获得的一个记录层的球面像差校正值，获得对另一个记录层的球面像差校正值。

6. 发明申请

US20060221782A1 DISK DRIVE APPARATUS AND SPHERICAL ABERRATION CORRECTING METHOD 失效
标题翻译：磁盘驱动装置和球形异常校正方法
公开(公告)号：US20060221782A1
公开(公告)日：2006-10-05
申请号：US11278572
申请日：2006-04-04
申请人： Junichi Kanenaga
发明人： Junichi Kanenaga
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G11B7/0941 , G11B2007/0013
摘要： A disk drive apparatus includes: an optical pickup irradiating a laser beam onto an optical disk having one or more recording layers through an objective lens and receiving the laser beam reflected from the optical disk; a driving unit moving the objective lens in an optical axial direction of the laser beam to the optical disk in accordance with a driving signal; an interlayer distance measuring unit measuring interlayer distances of a plurality of recording layers of the optical disk; and a spherical aberration correcting unit obtaining a spherical aberration correction value for correcting a spherical aberration due to the objective lens to one of the recording layers of the optical disk. A spherical aberration correction value to another one of the recording layers is obtained on the basis of the measured interlayer distances and the obtained spherical aberration correction value to the one recording layer.
摘要翻译：磁盘驱动装置包括：通过物镜将激光束照射到具有一个或多个记录层的光盘并接收从光盘反射的激光束的光学拾取器; 驱动单元，其根据驱动信号将激光束的光轴方向的物镜移动到光盘; 测量所述光盘的多个记录层的层间距离的层间距离测量单元; 以及球面像差校正单元，其获得用于将由于物镜导致的球面像差校正到光盘的记录层之一的球面像差校正值。基于测量的层间距离和所获得的一个记录层的球面像差校正值，获得对另一个记录层的球面像差校正值。

7. 发明授权

US06181652B2 Method and apparatus for reading CD-ROMs or the like at matching speeds determined by disk eccentricities 有权
标题翻译：用于通过盘偏心度确定的匹配速度读取CD-ROM等的方法和装置
公开(公告)号：US06181652B2
公开(公告)日：2001-01-30
申请号：US09177024
申请日：1998-10-22
申请人： Noriyuki Katou , Junichi Kanenaga , Shigeru Fukinuki
发明人： Noriyuki Katou , Junichi Kanenaga , Shigeru Fukinuki
IPC分类号： G11B709
CPC分类号： G11B19/04 , G11B7/0037 , G11B7/005 , G11B7/0953 , G11B19/26
摘要： A CD-ROM drive is disclosed which is for use with disks having various degrees of spindle hole eccentricity and data track eccentricity. The hole eccentricity of each disk manifests itself during disk rotation as periodic vibration of the disk and, in consequence, periodic departures of the light beam spot from the track to an extent proportional to the speed of disk rotation, whereas the track eccentricity manifests itself during disk rotation as periodic departures of the beam spot from the track to a constant extent regardless of the speed of disk rotation. Therefore, on being loaded into the disk drive, each disk has its hole eccentricity and track eccentricity measured at two different disk eccentricity check speeds in terms of, for example, the amplitude of an eccentricity-caused periodic component of a tracking error signal. The hole eccentricity of the disk is ascertainable by subtracting the eccentricity measurement at the lower check speed from that at the higher check speed. A speed suitable for reading the disk, at which speed the disk will cause no inconvenient vibration, is determined on the basis of the thus ascertained hole eccentricity thereof.
摘要翻译：公开了一种CD-ROM驱动器，其用于具有不同程度的主轴孔偏心度和数据磁道偏心率的磁盘。每个磁盘的孔偏心度在磁盘旋转期间表现为盘的周期性振动，结果是光束点从轨道的周期性偏移到与盘旋转速度成比例的程度，而轨道偏心度在磁盘旋转作为光束点从轨道的周期性偏移到恒定的程度，而与盘旋转的速度无关。因此，在装载到磁盘驱动器中时，每个磁盘的偏心距离和轨道偏心度在两个不同的磁盘偏心检查速度下测量，例如在跟踪误差信号的偏心引起的周期分量的振幅方面。通过以较低的检查速度从较低的检查速度减去偏心率测量值来确定盘的孔偏心度。基于这样确定的孔偏心率来确定适于读取盘的速度，盘以不会引起振动的不便。

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