公开(公告)号：JPH1116166A

公开(公告)日：1999-01-22

申请号：JP16707797

申请日：1997-06-24

Applicant: SONY CORP

Inventor： ISHIMOTO TSUTOMU ,  ARAI MASAYUKI

IPC: G11B7/00 ,  G11B7/0045

Abstract: PROBLEM TO BE SOLVED: To enable recording with higher density in an RPR(radial partial response) disk. SOLUTION: Data generated by an information source 1 are recorded on a glass original disk 5 and an RPR disk 7 is prepared based on the data. The prepared RPR disk 7 is actually reproduced and at first a co-channel interference is calculated in a record compensating amount calculator 9. At this time, the data from which the influence of disk defects is removed are used. The data being used taken the influence of at least two adjacent edges and of at least two adjacent edges on the adjacent tracks into consideration. A pre- emphasis compensating amount corresponding to the calculated co-channel interference is calculated and the calculated result is stored in a ROM 10. The data of the compensating amount recorded in the ROM 10 are recorded on a compensating amount table present in a record compensating circuit 3. The record compensating circuit 3 processes the recorded data from the information source 1 corresponding to the calculated compensating amount and performs a cutting operation again.

公开(公告)号：JP2011258281A

公开(公告)日：2011-12-22

申请号：JP2010132743

申请日：2010-06-10

Applicant: Sony Corp ,  ソニー株式会社

Inventor： ISHIMOTO TSUTOMU ,  HORIGOME JUNICHI

IPC: G11B7/0045 ,  G11B7/007 ,  G11B7/09 ,  G11B20/10

CPC classification number: G11B7/0065 ,  G11B7/0045

Abstract: PROBLEM TO BE SOLVED: To increase recording capacity by increasing the recording density of marks on a recording layer of an optical recording medium having a reference plane, which carries information recorded by CAV system, and a recording layer formed at a depth different from the reference plane.SOLUTION: Marks are recorded on the recording layer based on recording clocks which are generated by modifying the frequency of a reference signal corresponding to radius position information recorded on the reference plane. Compared to a case where recording is simply made by CAV on the recording layer according to the rotation of an optical recording medium driven at a constant speed, the recording density of marks on the recording layer is increased by carrying out the mark recording based on the recording clocks in which the frequency is modified in accordance with the radius position.

Abstract translation: 要解决的问题：通过增加具有参考平面的光记录介质的记录层上记录密度的记录密度来提高记录容量，该参考平面携带由CAV系统记录的信息，以及形成在深度不同的记录层 从参考平面。

解决方案：基于通过修改对应于记录在参考平面上的半径位置信息的参考信号的频率而产生的记录时钟，将标记记录在记录层上。 与通过根据以恒定速度驱动的光学记录介质的旋转在记录层上简单地由记录层进行记录的情况相比，记录层上的标记的记录密度通过基于 根据半径位置对频率进行修改的记录时钟。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011238315A

公开(公告)日：2011-11-24

申请号：JP2010108999

申请日：2010-05-11

Applicant: Sony Corp ,  ソニー株式会社

Inventor： ISHIMOTO TSUTOMU ,  HORIGOME JUNICHI

IPC: G11B7/005 ,  G11B7/09 ,  G11B20/10

Abstract: PROBLEM TO BE SOLVED: To provide an optical drive device and a signal generation method which can accurately detect amplitude values at pit and mark parts, with respect to an optical recording medium on which pits or marks are position recorded, even when sampling timing indicated by a clock relatively varies due to the influence of jitters of reproduction signals and the like.SOLUTION: Reproduction signals are sampled at leading edge timing and trailing edge timing of a pit or a mark, and the sampling values are averaged. Averaging the sampling values sampled at both of the leading and trailing edge timing prevents detected amplitude values (namely, the values obtained by the averaging) from varying even when the sampling timing indicated by a clock varies with the reproduction signals. That is, the same amplitude value can be properly detected for a part where the same amplitude value is to be detected normally.

Abstract translation: 要解决的问题：为了提供一种光驱动装置和信号产生方法，其可以相对于其上记录有凹坑或标记的光记录介质来精确地检测凹坑和标记部分的振幅值，即使在采样 由时钟指示的定时由于再现信号的抖动等的影响而相对变化。 解决方案：在凹坑或标记的前沿定时和后沿时序采样再现信号，并对采样值进行平均。 对在前沿和后沿时序采样的采样值进行平均，即使当由时钟指示的采样定时随着再现信号而变化时，也可防止检测到的振幅值（即，由平均值获得的值）变化。 也就是说，对于要正常检测相同幅度值的部分，可以适当地检测相同的幅度值。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011146090A

公开(公告)日：2011-07-28

申请号：JP2010005735

申请日：2010-01-14

Applicant: Sony Corp ,  ソニー株式会社

Inventor： ISHIMOTO TSUTOMU ,  HORIGOME TOSHIHIRO

IPC: G11B7/09 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/007 ,  G11B7/085 ,  G11B7/125 ,  G11B7/24

CPC classification number: G11B7/0908 ,  G11B7/0065 ,  G11B7/00781 ,  G11B7/0938 ,  G11B7/1275 ,  G11B2007/0009

Abstract: PROBLEM TO BE SOLVED: To prevent an error (residual error) on a focus servo system side of the recording/reproducing laser beam from being applied to a focus servo system of a servo laser beam as disturbance, by focus servo control during reproduction. SOLUTION: A first focus error signal obtained by receiving a first light beam is subtracted from a second focus error signal obtained by receiving reflected light of the second light. Based on the second focus error signal obtained by subtracting the first focus error signal, second focus servo control is performed by driving the second focus mechanism. Residual error components in a first focus servo control system is prevented from being superimposed on a second focus servo control system. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：为了防止记录/再现激光束的聚焦伺服系统侧的误差（残余误差）被施加到伺服激光束的聚焦伺服系统作为干扰，通过聚焦伺服控制在 再生产。 解决方案：通过接收第一光束获得的第一聚焦误差信号从通过接收第二光的反射光获得的第二聚焦误差信号中减去。 基于通过减去第一聚焦误差信号而获得的第二聚焦误差信号，通过驱动第二聚焦机构执行第二聚焦伺服控制。 防止第一聚焦伺服控制系统中的残余误差分量叠加在第二聚焦伺服控制系统上。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2010176775A

公开(公告)日：2010-08-12

申请号：JP2009020916

申请日：2009-01-30

Applicant: Sony Corp ,  ソニー株式会社

Inventor： KIN YOSHITOSHI ,  ISHIMOTO TSUTOMU

IPC: G11B25/04

Abstract: PROBLEM TO BE SOLVED: To provide a disk device, wherein the position and parallelism of a stabilizing plate are adjusted to a predetermined position and a predetermined parallelism with high accuracy, using a simple constitution. SOLUTION: The disk device includes an optical pickup, a rotational driving portion 30, the stabilizing plate 10, a transport portion, and a base 20. The stabilizing plate 10 has a stabilizing plate body 11 and three support portions 12-14, arranged in the vicinity of an outer periphery of the stabilizing plate body, and the three supporting portions 12-14 are placed with 90° or more angular distances among one another, with respect to a rotational axis 31 of a flexible optical disk. Also the base 20 has three positioning portions 22-24, and the three positioning portions 22-24 respectively fit in the three support portions 12-14, when the stabilizing plate 10 is transferred with the transport portion in such a way that the distance between the stabilizing plate 10 and the flexible optical disk becomes the predetermined distance. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种盘装置，其中使用简单的构造将稳定板的位置和平行度以高精度调节到预定位置和预定平行度。 解决方案：盘装置包括光学拾取器，旋转驱动部分30，稳定板10，输送部分和基部20.稳定板10具有稳定板主体11和三个支撑部分12-14 布置在稳定板体的外周附近，并且三个支撑部12-14相对于柔性光盘的旋转轴线31彼此成90°以上的角距离。 此外，当稳定板10与传送部分一起传送时，底座20具有三个定位部分22-24，并且三个定位部分22-24分别装配在三个支撑部分12-14中， 稳定板10和柔性光盘变为预定距离。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2010135028A

公开(公告)日：2010-06-17

申请号：JP2008311641

申请日：2008-12-05

Applicant: Sony Corp ,  ソニー株式会社

Inventor： ISHIMOTO TSUTOMU

IPC: G11B7/09

CPC classification number: G11B20/10009 ,  G11B20/10037 ,  G11B20/10222 ,  G11B20/10425 ,  G11B20/1403

Abstract: PROBLEM TO BE SOLVED: To stably perform a repetitive servo control with a simple configuration without needing an encoder synchronized with rotation of a disk and a PLL (Phase-Locked Loop) circuit.
SOLUTION: A disk drive includes a main control part 2 controlling an object to be controlled and a repetitive control part 3 sampling error signals and obtaining a repetitive signal component. The main control part 2 controls the object to be controlled based on the error signals calculated from target signals of the object to be controlled necessary for recording or playback of a disk medium and observed signals of the object to be controlled. The repetitive control part 3 samples the error signals by using a sampling clock and obtains a repetitive signal component synchronized with the rotation of the disk medium from the sampled error signals. A sampling clock generating part 4 resets a timing of generation of the sampling clock by a rotation detection pulse and limits generation of the sampling clock at a timing directly before generation of the rotation detection pulse.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了稳定地执行具有简单配置的重复伺服控制，而不需要与盘和PLL（锁相环）电路的旋转同步的编码器。 解决方案：磁盘驱动器包括控制被控制对象的主控制部分2和重复控制部分3采样错误信号并获得重复信号分量。 主控制部分2基于从磁盘介质的记录或重放所需要的被控制对象的目标信号计算的误差信号和被控制对象的观测信号来控制被控制物体。 重复控制部分3通过使用采样时钟对误差信号进行采样，并从采样的误差信号中获得与盘介质的旋转同步的重复信号分量。 采样时钟产生部分4通过旋转检测脉冲重置采样时钟的产生定时，并且在直接生成旋转检测脉冲之前的定时限制采样时钟的产生。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009158007A

公开(公告)日：2009-07-16

申请号：JP2007335080

申请日：2007-12-26

Applicant: Sony Corp ,  ソニー株式会社

Inventor： ISHIMOTO TSUTOMU

IPC: G11B7/095 ,  G11B7/135

CPC classification number: G11B7/1387 ,  G11B7/0908 ,  G11B7/0956

Abstract: PROBLEM TO BE SOLVED: To control accurately gap between a converging optical system and an information recording medium with comparatively simple device constitution when recording and reproduction are performed by irradiating an information recording medium with proximity field light. SOLUTION: The device has a light source 1, a converging optical system 10 in which the information recording medium is irradiated with light from the light source 1 as proximity field light, a photo-detecting part 9 detecting whole reflected return light quantity from an information recording medium 20, a control part 15 generating a control signal based on the detected signal obtained from the photo-detecting part 9, and a driving part 11 driving the converging optical system 10 to the prescribed position on the information recording medium 20. Then, in the control part 15, a gap servo signal GES is generated by performing feedforward of a push-pull signal Rpp in the direction crossing a relative running direction for the information recording medium 20 for a gap error signal obtained from the photo-detecting part 9. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：通过用具有近场光的信息记录介质进行记录和再现来精确地控制会聚光学系统和信息记录介质之间的间隙，以相对简单的装置结构来控制。 解决方案：该装置具有光源1，会聚光学系统10，信息记录介质以来自光源1的光作为近场光照射，光检测部9检测全反射返回光量 从信息记录介质20，基于从光检测部分9获得的检测信号产生控制信号的控制部分15以及将会聚光学系统10驱动到信息记录介质20上的规定位置的驱动部分11 然后，在控制部15中，通过在从信息记录介质20获得的间隙误差信号的信息记录介质20的交叉相对运动方向的方向上执行推挽信号Rpp的前馈来产生间隙伺服信号GES， 检测第9部分。版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008140421A

公开(公告)日：2008-06-19

申请号：JP2006322496

申请日：2006-11-29

Applicant: Sony Corp ,  ソニー株式会社

Inventor： ISHIMOTO TSUTOMU

IPC: G11B7/095

Abstract: PROBLEM TO BE SOLVED: To provide a servo device capable of enhancing tracking or focusing (gap) accuracy after sufficiently assuring stability without raising a servo band. SOLUTION: Eccentricity servo is performed by an eccentricity signal to perform rough tracking servo in a step S1. Next, tracking servo is performed (step S2). A head is made to follow up a recording pit train by the tracking servo. Thence, a tracking residue error Δe is compared with a preset threshold α (for example, 60 nmpp in a CD) in a step S3. If Δe α in the step S3, the specifications are not satisfied and therefore, the rotation synchronous component (repeating signal component) of the tracking error signal is learned and the repeating servo is performed in the step S4. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供一种能够在不提高伺服带的情况下充分确保稳定性之后能够增强跟踪或聚焦（间隙）精度的伺服装置。 解决方案：在步骤S1中通过偏心信号执行偏心伺服以执行粗略跟踪伺服。 接下来，执行跟踪伺服（步骤S2）。 通过跟踪伺服机构来追踪记录坑列车。 因此，在步骤S3中将跟踪残留误差Δe与预设阈值α（例如CD中的60nmpp）进行比较。 如果在步骤S3中Δe<α，则规格是满足的，因此，目前的跟踪伺服机构最终是可行的。 此外，如果步骤S3中的Δe>α，则不满足规格，因此在步骤S4中学习跟踪误差信号的旋转同步分量（重复信号分量），并执行重复伺服。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2008140420A

公开(公告)日：2008-06-19

申请号：JP2006322495

申请日：2006-11-29

Applicant: Sony Corp ,  ソニー株式会社

Inventor： ISHIMOTO TSUTOMU

IPC: G11B7/095

Abstract: PROBLEM TO BE SOLVED: To provide a tracking servo device capable of enhancing tracking accuracy after sufficiently assuring stability without raising a servo band.
SOLUTION: An eccentricity signal generation section 4 generates the eccentricity signal ES based on the tracking error signal obtained in the state of not applying tracking servo from a tracking actuator 12 which performs tracking for the information tracks of a disk-shaped optical recording medium. An eccentricity servo section 14 performs the eccentricity servo based on the eccentricity signal ES generated by the eccentricity signal generation section 4. A tracking servo section 15 performs the tracking servo in the amount remaining after servo taking by the eccentricity servo section 14.
COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供一种能够在不提高伺服带的情况下充分确保稳定性之后能够提高跟踪精度的跟踪伺服装置。 解决方案：偏心线信号产生部分4基于在跟踪致动器12不施加跟踪伺服的状态下获得的跟踪误差信号产生偏心信号ES，跟踪致动器12执行盘形光学记录的信息轨道的跟踪 中。 偏心伺服部分14基于由偏心线信号产生部分4产生的偏心信号ES执行偏心伺服。跟踪伺服部分15以由偏心伺服部分14进行的伺服取出之后剩余的量执行跟踪伺服。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007193894A

公开(公告)日：2007-08-02

申请号：JP2006011329

申请日：2006-01-19

Applicant: Sony Corp ,  ソニー株式会社

Inventor： SAITO KIMIHIRO ,  TAKAGI KATSUJI ,  ISHIMOTO TSUTOMU

IPC: G11B7/09 ,  G11B7/135

CPC classification number: G11B7/1353 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/094 ,  G11B7/0943 ,  G11B7/0953 ,  G11B7/0956 ,  G11B7/131 ,  G11B7/1356 ,  G11B7/1387 ,  G11B11/10543 ,  G11B11/10576

Abstract: PROBLEM TO BE SOLVED: To provide an optical recording/reproducing device suited to near field light recording/reproducing. SOLUTION: The optical recording/reproducing device is provided with: a beam splitter BS102 for reflecting both of P and S polarized components among reflected light from an optical recording medium 90; a separation section such as Wollaston prism for separating both polarized components reflected by the BS102; and a detection section 120 for individually detecting both polarized components separated by the separation section. The detection section 120 detects a polarized component same as polarized light entering the optical recording medium 90 and a polarized component orthogonal to the polarized component among reflected light from the optical recording medium 90, and first and second detection sections 121 and 122 having two or more light receiving areas divided at least in a direction corresponding to the extending direction of the recording track of the optical recording medium 90 are provided. Offset information is obtained from the difference signal of the light receiving areas of the second detection section, and an offset-corrected tracking error control signal is obtained. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供适合于近场光记录/再现的光学记录/再现装置。 光学记录/再现装置设置有：分光器BS102，用于在来自光学记录介质90的反射光中反射P和S偏振分量; 诸如Wollaston棱镜的分离部分，用于分离由BS102反射的两个偏振分量; 以及用于分别检测由分离部分分离的两个极化分量的检测部分120。 检测部分120检测与来自光记录介质90的反射光中相同的入射到光记录介质90的偏振光和与偏振分量正交的偏振分量的偏振分量，以及具有两个或更多个的第一和第二检测部分121和122 提供了至少在与光学记录介质90的记录轨道的延伸方向对应的方向上划分的光接收区域。 从第二检测部分的光接收区域的差分信号获得偏移信息，并且获得偏移校正的跟踪误差控制信号。 版权所有（C）2007，JPO＆INPIT