公开(公告)号：US5268914A

公开(公告)日：1993-12-07

申请号：US892772

申请日：1992-06-03

申请人： Mikio Yamamuro ,  Yutaka Saito

发明人： Mikio Yamamuro ,  Yutaka Saito

IPC分类号： G11B7/125 ,  H01S5/042 ,  H01S5/0683 ,  H01S3/13

CPC分类号： G11B7/126 ,  H01S5/06832

摘要： The laser beam control apparatus according to the invention having a photodiode for outputting a current consisting of high and low-frequency components in accordance with the amount of a laser beam emitted from a laser diode. The current output from the photodiode is separated into high and low-frequency components by a CR filter, and the separated low-frequency current is amplified by an amplifier. The current amplified by this amplifier is added to the high-frequency current separated by the CR filter. The resulting sum current is converted into a voltage by an amplifier, and the amount of the laser beam emitted from the laser diode is controlled in accordance with the voltage converted by this amplifier. With this operation, the laser beam output power of the laser diode can be stably controlled in a wide band.

摘要翻译： 根据本发明的激光束控制装置具有光电二极管，用于根据从激光二极管发射的激光束的量输出由高频和低频分量组成的电流。 来自光电二极管的电流输出由CR滤波器分离成高频和低频分量，分离的低频电流由放大器放大。 由该放大器放大的电流被添加到由CR滤波器分离的高频电流。 所得到的和电流由放大器转换为电压，并且根据由该放大器转换的电压来控制从激光二极管发射的激光束的量。 通过这种操作，可以在宽带内稳定地控制激光二极管的激光束输出功率。

公开(公告)号：US06031804A

公开(公告)日：2000-02-29

申请号：US208578

申请日：1998-12-10

申请人： Mikio Yamamuro

发明人： Mikio Yamamuro

IPC分类号： G11B20/10 ,  G11B7/00 ,  G11B7/004 ,  G11B20/12 ,  G11B20/18

CPC分类号： G11B20/1883 ,  G11B20/1258 ,  G11B20/1833 ,  G11B2220/20

摘要： An apparatus and method for detecting and replacing a defective sector on an optical disk. Recording data and error correction data are recorded on an optical disk at a manufacturing time or an initial time. The recorded data and the error correction data are reproduced in units of one sector. A defective sector is determined when address data in an address field cannot be reproduced or when a number of errors in at least one sector exceeds a specified value. Address data of the defective sector is recorded in a defect list on the optical disk. Recording data and error correction data are successively recorded on the optical disk in a plurality of successive block areas. Defective sectors are skipped and recording data and error correction data are recorded in a unit of one block beginning in a next sector area. When a defective sector is detected after recording the recording data and the error correction data at a time other that the initial time or the manufacturing time, the recording data and the error correction data are recorded in a block area being different than a block area containing the defective sector.

摘要翻译： 一种用于检测和替换光盘上的缺陷扇区的装置和方法。 记录数据和纠错数据在制造时间或初始时刻记录在光盘上。 记录数据和纠错数据以一个扇区为单位进行再现。 当地址字段中的地址数据不能被再现时或当至少一个扇区中的错误数超过指定值时确定缺陷扇区。 缺陷扇区的地址数据被记录在光盘上的缺陷列表中。 记录数据和纠错数据被连续记录在多个连续块区域的光盘上。 跳过有缺陷的扇区，并且记录数据和纠错数据以从下一个扇区区域开始的一个块的单位被记录。 当在初始时间或制造时间以外的时间记录记录数据和纠错数据之后检测到缺陷扇区时，记录数据和纠错数据被记录在与包含 有缺陷的部门。

公开(公告)号：US5991253A

公开(公告)日：1999-11-23

申请号：US195229

申请日：1998-11-18

申请人： Mikio Yamamuro

发明人： Mikio Yamamuro

IPC分类号： G11B20/10 ,  G11B7/00 ,  G11B7/004 ,  G11B20/12 ,  G11B20/18

CPC分类号： G11B20/1883 ,  G11B20/1258 ,  G11B20/1833 ,  G11B2020/183 ,  G11B2220/20

摘要： In this invention, in an optical disk on which data is to be recorded in units of one ECC block constructed by 16 sectors, dummy data is recorded at the manufacturing time or at the initial time such as the application starting time, then the dummy data is reproduced to determine a sector with primary defect, the address of the sector which is determined to have the primary defect is recorded on the optical disk, and at the time of data recording, data recording is effected in units of one ECC block while skipping over the sector with the primary defect. The determining condition for the primary defect is a case where address data of the address field cannot be reproduced, or where the number of rows in which the number of error bytes is four or more is five or more. Further, in the optical disk on which data is to be recorded in units of one ECC block, data is recorded at the time of data recording other than the initial time, then the data is reproduced to determine an ECC block having a sector with secondary defect, and data of the ECC block which is determined to have the sector with secondary defect is recorded in an ECC block which is separately prepared. The determining condition for the secondary defect is a case where address data of the address field cannot be reproduced (first condition), where the number of rows in which the number of error bytes is four or more is five or more (second condition), where the number of rows in which the number of error bytes is four or more is not larger than five, the number of rows in which the number of error bytes is four or more is three or more and the number of rows in which the number of error bytes in one block area is four or more is ten or more, or where at least two sector areas in which the number of rows in which the number of error bytes is four or more is five or less and the number of rows in which the number of error bytes is four or more is three or more are present in one block area.

公开(公告)号：US5956309A

公开(公告)日：1999-09-21

申请号：US100492

申请日：1998-06-22

申请人： Mikio Yamamuro

发明人： Mikio Yamamuro

IPC分类号： G11B20/10 ,  G11B7/00 ,  G11B7/004 ,  G11B20/12 ,  G11B20/18

CPC分类号： G11B20/1883 ,  G11B20/1258 ,  G11B20/1833 ,  G11B2220/20

摘要： An apparatus and method for detecting and replacing a defective sector on an optical disk. Recording data and error correction data are recorded on an optical disk at a manufacturing time or an initial time. The recorded data and the error correction data are reproduced in units of one sector. A defective sector is determined when address data in an address field cannot be reproduced or when a number of errors in at least one sector exceeds a specified value. Address data of the defective sector is recorded in a defect list on the optical disk. Recording data and error correction data are successively recorded on the optical disk in a plurality of successive block areas. Defective sectors are skipped and recording data and error correction data are recorded in a unit of one block beginning in a next sector area. When a defective sector is detected after recording the recording data and the error correction data at a time other that the initial time or the manufacturing time, the recording data and the error correction data are recorded in a block area being different than a block area containing the defective sector.

摘要翻译： 一种用于检测和替换光盘上的缺陷扇区的装置和方法。 记录数据和纠错数据在制造时间或初始时刻记录在光盘上。 记录数据和纠错数据以一个扇区为单位进行再现。 当地址字段中的地址数据不能被再现时或当至少一个扇区中的错误数超过指定值时确定缺陷扇区。 缺陷扇区的地址数据被记录在光盘上的缺陷列表中。 记录数据和纠错数据被连续记录在多个连续块区域的光盘上。 跳过有缺陷的扇区，并且记录数据和纠错数据以从下一个扇区区域开始的一个块的单位被记录。 当在初始时间或制造时间以外的时间记录记录数据和纠错数据之后检测到缺陷扇区时，记录数据和纠错数据被记录在与包含 有缺陷的部门。

公开(公告)号：US5018121A

公开(公告)日：1991-05-21

申请号：US290339

申请日：1988-12-27

申请人： Mikio Yamamuro

发明人： Mikio Yamamuro

IPC分类号： G11B7/085 ,  G11B7/09

CPC分类号： G11B7/0908

摘要： An apparatus for focusing a light beam onto an object includes a directing element for directing the light beam onto the object, a first detector for detecting the light beam from the object so as to generate a focus signal representing a distance of the directing element with respect to the object. The apparatus further includes a generator for generating a reproduced signal representing the data from the focal signal generated by the first detector. An adjuster adjusts the location of the directing element with respect to the object in accordance with the envelope of the reproduced signal generated by the generator.

摘要翻译： 用于将光束聚焦到物体上的装置包括用于将光束引导到物体上的引导元件，用于检测来自物体的光束的第一检测器，以便产生表示引导元件的距离的聚焦信号 对象。 该装置还包括发生器，用于根据由第一检测器产生的焦点信号产生表示数据的再现信号。 调节器根据由发生器产生的再生信号的包络来调整定向元件相对于物体的位置。

公开(公告)号：US20080080348A1

公开(公告)日：2008-04-03

申请号：US11837125

申请日：2007-08-10

申请人： Hiroshi KUBOTA ,  Mikio Yamamuro

发明人： Hiroshi KUBOTA ,  Mikio Yamamuro

IPC分类号： G11B20/18 ,  G11B19/04 ,  G11B7/00

CPC分类号： G11B7/00718 ,  G11B7/00745 ,  G11B7/0908 ,  G11B7/094

摘要： By a controller, land and groove areas of an optical disc are tracked, two focus error signals are detected in PID portions in the respective land and groove areas, a difference of focus offset is calculated on the basis of the detection, and the two focus error signals are corrected so as to set the difference to zero.

摘要翻译： 通过控制器跟踪光盘的平面和凹槽区域，在相应的凹槽和凹槽区域中的PID部分中检测到两个聚焦误差信号，基于检测计算聚焦偏移的差异，并且两个焦点 校正误差信号，以将差值设定为零。

公开(公告)号：US5883867A

公开(公告)日：1999-03-16

申请号：US826753

申请日：1997-03-24

申请人： Mikio Yamamuro

发明人： Mikio Yamamuro

IPC分类号： G11B20/10 ,  G11B7/00 ,  G11B7/004 ,  G11B20/12 ,  G11B20/18

CPC分类号： G11B20/1883 ,  G11B20/1258 ,  G11B20/1833 ,  G11B2020/183 ,  G11B2220/20

摘要： An apparatus and method for detecting and replacing a defective sector on an optical disc. Recording data and error correction data is recorded on an optical disk at a manufacturing time or an initial time. The recorded data and the error correction data are reproduced in units of one sector. A defective sector is determined when address data in an address field cannot be reproduced or when a number errors in at least one sector exceeds a specified value. Address data of the defective sector is recorded in a defect list on the optical disk. Recording data and error correction data are successively recorded on the optical disk in a plurality of successive block areas. Defective sectors are skipped and recording data and error correction data are recorded in a unit of one block beginning in a next sector area. When a defective sector is detected after recording the recording data and the error correction data at a time other that the initial time or the manufacturing time, the recording data and the error correction data are recorded in a block area being different than a block area containing the defective sector.

摘要翻译： 一种用于检测和替换光盘上的缺陷扇区的装置和方法。 记录数据和纠错数据在制造时刻或初始时刻被记录在光盘上。 记录数据和纠错数据以一个扇区为单位进行再现。 当地址字段中的地址数据不能被再现时或当至少一个扇区中的数字错误超过指定值时，确定缺陷扇区。 缺陷扇区的地址数据被记录在光盘上的缺陷列表中。 记录数据和纠错数据被连续记录在多个连续块区域的光盘上。 跳过有缺陷的扇区，并且记录数据和纠错数据以从下一个扇区区域开始的一个块的单位被记录。 当在初始时间或制造时间以外的时间记录记录数据和纠错数据之后检测到缺陷扇区时，记录数据和纠错数据被记录在与包含 有缺陷的部门。

公开(公告)号：US5835459A

公开(公告)日：1998-11-10

申请号：US736235

申请日：1996-10-23

申请人： Tamane Takahara ,  Masahiko Tanaka ,  Mikio Yamamuro

发明人： Tamane Takahara ,  Masahiko Tanaka ,  Mikio Yamamuro

IPC分类号： G11B7/007 ,  G11B7/085 ,  G11B7/09

CPC分类号： G11B7/08517 ,  G11B7/00718 ,  G11B7/094

摘要： In a case where tracking control is carried out by a lens actuator in performing a tracking pull-in operation in which tracking control is started in the state where tracking control is out of operation, the tracking control circuit brings control into stable tracking control by moving the light spot onto a groove on the optical disc. After that, when tracking onto a land is needed, the tracking control circuit moves the light spot onto the land. This enables a pull-in action toward a stable tracking operation.

摘要翻译： 在跟踪控制在跟踪控制不工作的状态下执行跟踪控制开始的跟踪引入操作的情况下，由镜头致动器执行跟踪控制的情况下，跟踪控制电路通过移动来控制到稳定的跟踪控制 光点到光盘上的凹槽上。 之后，当需要跟踪到陆地时，跟踪控制电路将光点移动到地面上。 这使得能够进行稳定跟踪操作的拉入动作。

公开(公告)号：US5805547A

公开(公告)日：1998-09-08

申请号：US822490

申请日：1997-03-24

申请人： Mikio Yamamuro

发明人： Mikio Yamamuro

IPC分类号： G11B20/10 ,  G11B7/00 ,  G11B7/004 ,  G11B20/12 ,  G11B20/18

CPC分类号： G11B20/1883 ,  G11B20/1258 ,  G11B20/1833 ,  G11B2220/20

摘要： In this invention, in an optical disk on which data is to be recorded in units of one ECC block constructed by 16 sectors, dummy data is recorded at the manufacturing time or at the initial time such as the application starting time, then the dummy data is reproduced to determine a sector with primary defect, the address of the sector which is determined to have the primary defect is recorded on the optical disk, and at the time of data recording, data recording is effected in units of one ECC block while skipping over the sector with the primary defect. Further, in the optical disk on which data is to be recorded in units of one ECC block, data is recorded at the time of data recording other than the initial time, then the data is reproduced to determine an ECC block having a sector with secondary defect, and data of the ECC block which is determined to have the sector with secondary defect is recorded in an ECC block which is separately prepared. Further, in the optical disk on which data is to be recorded in units of one ECC block constructed by 16 sectors, dummy data is recorded at the manufacturing time or at the initial time such as the application starting time, then the dummy data is reproduced to determine a sector with primary defect, the address of the sector which is determined to have the primary defect is recorded on the optical disk, data recording is effected in units of one ECC block while skipping over the sector with the primary defect at the time of data recording, data is recorded at the data recording time other than the initial time, the data is reproduced to determine an ECC block having a sector with secondary defect, and data of the ECC block which is determined to have the sector with secondary defect is recorded in an ECC block which is separately prepared.

摘要翻译： 在本发明中，在由16扇区构成的一个ECC块的单位记录数据的光盘中，在制造时刻或初始时刻（例如应用开始时刻）记录虚拟数据，然后虚拟数据 被再现以确定具有主要缺陷的扇区，将被确定为具有主要缺陷的扇区的地址记录在光盘上，并且在数据记录时，以跳过的方式以一个ECC块为单位进行数据记录 在主要缺陷的部门。 此外，在以一个ECC块为单位记录数据的光盘中，在初始时间以外的数据记录时记录数据，然后重现数据，以确定具有次级扇区的ECC块 确定为具有次要缺陷的扇区的ECC块的缺陷和数据被记录在单独准备的ECC块中。 此外，在以16个扇区构成的一个ECC块为单位记录数据的光盘中，在制造时刻或初始时刻如应用开始时刻记录虚拟数据，然后再现虚拟数据 为了确定具有原始缺陷的扇区，将被确定为具有主要缺陷的扇区的地址记录在光盘上，则以一个ECC块为单位进行数据记录，同时跳过具有主要缺陷的扇区 的数据记录时，数据在初始时刻以外的数据记录时刻被记录，再现数据以确定具有次级缺陷的扇区的ECC块，以及被确定为具有次级缺陷的扇区的ECC块的数据 被记录在单独准备的ECC块中。

公开(公告)号：US5684774A

公开(公告)日：1997-11-04

申请号：US727136

申请日：1996-10-08

申请人： Mikio Yamamuro

发明人： Mikio Yamamuro

IPC分类号： G11B7/0037 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/013 ,  G11B19/12 ,  G11B20/10 ,  G11B20/12 ,  G11B20/14 ,  G11B27/19 ,  G11B27/30 ,  G11B5/09

CPC分类号： G11B20/10009 ,  G11B19/12 ,  G11B20/1258 ,  G11B20/1403 ,  G11B27/19 ,  G11B27/3027 ,  G11B7/0037 ,  G11B7/0045 ,  G11B7/00745 ,  G11B7/013 ,  G11B2220/20 ,  G11B7/007

摘要： An apparatus for recording data on an M-CAV-formatted optical disk. The disk has a plurality of substantially concentric tracks grouped into a plurality of zones arranged in a radial direction of the disk. Each of the zones is divided into the same number of sectors, each used as a unit area, and has a different assigned frequency at which to read read data from the sectors. Header information is recorded in the start region of each sector and identifies the sector. Provided next to the start region is a data field in which data is to be recorded. The apparatus is designed to record data in the data field by using a master clock signal having a specific frequency assigned to the zone including that data field. The apparatus has a master clock setting circuit for setting the frequency assigned to any zone to which the zone will be switched from the zone in which data is being recorded. When the zone is switched to that zone, the gain of the master clock setting circuit is increased temporarily, thereby switching the frequency of the master clock signal within a short time.

摘要翻译： 一种用于在M-CAV格式的光盘上记录数据的装置。 盘具有多个基本上同心的轨道，其分组成沿盘的径向方向布置的多个区域。 每个区域被划分为相同数量的扇区，每个区段用作单位区域，并且具有不同的分配频率，以从扇区读取读取数据。 标题信息被记录在每个扇区的开始区域中并且识别扇区。 提供在开始区域旁边的是要记录数据的数据字段。 该设备被设计为通过使用具有分配给包括该数据字段的区域的特定频率的主时钟信号在数据字段中记录数据。 该设备具有主时钟设置电路，用于设置分配给区域将从其中记录数据的区域切换到的区域的频率。 当该区域切换到该区域时，主时钟设置电路的增益被临时增加，从而在短时间内切换主时钟信号的频率。