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1. 发明授权

US07068588B2 Optical disk medium having a predetermined change in the tilt of the surface 失效
标题翻译：具有预定表面倾斜变化的光盘介质
公开(公告)号：US07068588B2
公开(公告)日：2006-06-27
申请号：US10429694
申请日：2003-05-06
申请人： Yutaka Yamanaka
发明人： Yutaka Yamanaka
IPC分类号： G11B7/95
CPC分类号： G11B7/0956
摘要： An optical disk medium and a drive system are provided that enable high density recording to be carried out. In the optical disk medium, recorded information tracks are formed in a concentric or spiral manner, and information is recorded and played back by irradiating the recorded information tracks with a laser beam through a transparent substrate or a transparent cover layer. A change in tilt of the optical disk medium over one circuit of each of the tracks is set equal to or less than an allowed value, a change in tilt over the entire surface of the optical disk medium is permitted to be larger than the allowed value, and low frequency bandwidth tilt control is carried out by the drive system.
摘要翻译：提供了能够进行高密度记录的光盘介质和驱动系统。在光盘介质中，以同心或螺旋方式形成记录的信息轨道，通过透明基板或透明覆盖层用激光照射所记录的信息轨迹来记录和重放信息。每个磁道的一个电路上的光盘介质的倾斜度的变化被设置为等于或小于允许值，允许光盘介质的整个表面上的倾斜变化大于允许值，并且驱动系统执行低频带宽倾斜控制。

2. 发明授权

US07145845B2 Optical disc player having a carriage control system relying upon a multiplied periodic signal and a tracking error signal 失效
标题翻译：具有依赖于相乘的周期信号和跟踪误差信号的滑架控制系统的光盘播放机
公开(公告)号：US07145845B2
公开(公告)日：2006-12-05
申请号：US09972574
申请日：2001-10-04
申请人： Masato Sakamoto , Yasutaka Suzuki
发明人： Masato Sakamoto , Yasutaka Suzuki
IPC分类号： G11B7/95
CPC分类号： G11B7/0953
摘要： For reproducing and/or recording information from/onto an optical disc, a pickup is used to detect a target track on the disc through an optical beam. In carriage servo control, movement of the pickup is servo-controlled in the radial direction of the optical disc. In this control, a tracking error signal is produced by a preamplifier. A pulse signal is produced, in which the period of the pulse signal is set to a constant amount corresponding to the accuracy of movement of the pickup. Based on the pulse signal and the tracking error signal, a carriage control signal to move the pickup is produced. The carriage control signal is then supplied to a carriage motor by a driver, so that the pickup is moved.
摘要翻译：为了从光盘上再现和/或记录信息，拾取器用于通过光束来检测盘上的目标轨迹。在托架伺服控制中，拾取器的移动在光盘的径向上被伺服控制。在该控制中，由前置放大器产生跟踪误差信号。产生脉冲信号，其中脉冲信号的周期被设置为对应于拾取器的移动精度的恒定量。基于脉冲信号和跟踪误差信号，产生用于移动拾取器的滑架控制信号。然后由驾驶员将滑架控制信号提供给滑架电动机，使得拾取器移动。

3. 发明授权

US07092323B2 Multi-stage focus control system and method 有权
标题翻译：多级聚焦控制系统及方法
公开(公告)号：US07092323B2
公开(公告)日：2006-08-15
申请号：US10246825
申请日：2002-09-19
申请人： Chin-Yin Tsai , Keng-Lon Lei
发明人： Chin-Yin Tsai , Keng-Lon Lei
IPC分类号： G11B7/95
CPC分类号： G11B7/0908 , G11B7/08511 , G11B7/0941
摘要： A focus control system for an optical pickup head is provided. The optical head generates an electronic signal in response to an optical signal. The focus control system comprises a focusing error signal generator, a focus control signal generator and an actuator. The focus control signal generator is electrically connected to the focusing error signal generator, and includes a first, a second and a third compensators with a first, a second and a third gains, respectively, for generating a focus control signal with one of the first, second and third gains in response to the focusing error signal according to a corresponding one of a first, a second and a third operating modes of the optical pickup head. A method for controlling movement of an optical pickup head is also provided.
摘要翻译：提供了一种用于光学拾取头的聚焦控制系统。光头根据光信号产生电子信号。聚焦控制系统包括聚焦误差信号发生器，聚焦控制信号发生器和致动器。聚焦控制信号发生器电连接到聚焦误差信号发生器，并且包括分别具有第一，第二和第三增益的第一，第二和第三补偿器，用于产生具有第一，第二和第三增益中的一个的聚焦控制信号根据光学拾取头的第一，第二和第三操作模式中的相应一个响应于聚焦误差信号的第二和第三增益。还提供了一种用于控制光学拾取头的运动的方法。

4. 发明授权

US07280458B2 Optical pickup apparatus and optimal light spot focusing method 有权
标题翻译：光拾取装置和最佳光点聚焦法
公开(公告)号：US07280458B2
公开(公告)日：2007-10-09
申请号：US10120786
申请日：2002-04-12
申请人： Yong-jae Lee , Sung-ro Go , Pyong-yong Seong , Chang-jin Yang , Gi-bong Song , Byung-in Ma , Jong-koog Lee
发明人： Yong-jae Lee , Sung-ro Go , Pyong-yong Seong , Chang-jin Yang , Gi-bong Song , Byung-in Ma , Jong-koog Lee
IPC分类号： G11B7/95
CPC分类号： G11B7/131 , G11B7/00718 , G11B7/094 , G11B7/0941 , G11B7/0943 , G11B7/0946 , G11B7/0956 , G11B7/1275 , G11B7/1353 , G11B7/1367 , G11B7/139 , G11B7/13922 , G11B2007/0006
摘要： An optical pickup apparatus includes a first light source to emit a first light beam having a predetermined wavelength, a first optical path changer to change a proceeding path of the first light beam, an objective lens to focus the first light beam on a recording medium, a diffraction member to divide the first light beam reflected by the recording medium into five light regions, the diffraction member having a first diffraction region having a wide width in a direction corresponding to a tangential direction of the recording medium and second through fifth diffraction regions sequentially arranged around the outside of the first diffraction region in a direction corresponding to a radial direction of the recording medium, and a first photodetector having first through fifth light receiving portions to receive the first light beam reflected by the recording medium.
摘要翻译：一种光拾取装置包括：发射具有预定波长的第一光束的第一光源;改变第一光束的行进路径的第一光路改变器;将第一光束聚焦在记录介质上的物镜; 衍射构件，用于将由记录介质反射的第一光束分成五个光区域，衍射构件具有在与记录介质的切线方向对应的方向上具有宽宽度的第一衍射区域和第二至第五衍射区域在与所述记录介质的径向对应的方向上围绕所述第一衍射区域的外侧布置;以及第一光电检测器，具有第一至第五光接收部分，以接收由所述记录介质反射的所述第一光束。

5. 发明授权

US07092322B2 Calibration of focus error signal offset in a focus servo system 有权
公开(公告)号：US07092322B2
公开(公告)日：2006-08-15
申请号：US09950392
申请日：2001-09-10
申请人： Ron J. Kadlec , Hans B. Wach , Christopher J. Turner
发明人： Ron J. Kadlec , Hans B. Wach , Christopher J. Turner
IPC分类号： G11B7/95
CPC分类号： G11B7/0945 , G11B7/0908 , G11B7/094
摘要： A focus error signal offset calibration is presented. The focus error signal offset can be calibrated by varying the focus error signal offset to optimize an operating characteristic of the optical disk drive. In some embodiments, the operating characteristic can be a servo function. In some embodiments, the operating characteristics can be a read function.

6. 发明授权

US07079456B2 Optical recording head capable of correcting spherical aberration 失效
标题翻译：能够校正球面像差的光学记录头
公开(公告)号：US07079456B2
公开(公告)日：2006-07-18
申请号：US10613672
申请日：2003-07-03
申请人： Hidenori Wada , Yasuhiro Tanaka , Hideki Hayashi , Sadao Mizuno
发明人： Hidenori Wada , Yasuhiro Tanaka , Hideki Hayashi , Sadao Mizuno
IPC分类号： G11B7/95
CPC分类号： G11B7/1378 , G11B7/1392 , G11B7/13925 , G11B7/13927 , G11B2007/0006
摘要： An optical element having a high capture efficiency and rim intensity is provided. The optical element includes a central axis, a first curved surface extending in the transverse direction with respect to the central axis, a second curved surface extending in the transverse direction with respect to the central axis, and a peripheral surface extending between the first curved surface and the second curved surface. Light is refracted from the time light is incident on the first curved surface to the time the light is emitted from the second curved surface. Thereby, a light intensity distribution of the light emitted from the second curved surface and a light intensity distribution of the light incident on the first curved surface are different from each other, and a rim intensity improvement rate R, which is a rate of the rim intensity of the emitted light with respect to the rim intensity of the incident light is 1.07 or more and 1.5 or less, in which the rim intensity represents a ratio of the central intensity to the peripheral intensity.
摘要翻译：提供具有高捕获效率和边缘强度的光学元件。光学元件包括中心轴线，相对于中心轴线在横向方向上延伸的第一弯曲表面，相对于中心轴线沿横向方向延伸的第二弯曲表面，以及在第一弯曲表面和第二曲面。光从第一弯曲表面入射到光从第二弯曲表面发射的时间被折射。由此，从第二曲面发出的光的光强度分布和入射在第一曲面上的光的光强度分布彼此不同，作为轮缘的速度的轮辋强度提高率R 相对于入射光的边缘强度的发射光的强度为1.07以上且1.5以下，其中边缘强度表示中心强度与周边强度的比率。

7. 发明授权

US07050367B1 Optical information recording method and apparatus, and recorded medium where optical information recording control program is recorded 失效
标题翻译：光信息记录方法和装置，以及记录光信息记录控制程序的记录介质
公开(公告)号：US07050367B1
公开(公告)日：2006-05-23
申请号：US09719501
申请日：2000-04-28
申请人： Akira Negishi , Ryuichi Sunagawa
发明人： Akira Negishi , Ryuichi Sunagawa
IPC分类号： G11B7/45 , G11B7/95 , G11B7/125
CPC分类号： G11B7/126 , G11B7/0956
摘要： An optical information recording method and a device which can record information with a laser light irradiating direction kept constant even if an information recording surface of an optical information recording medium is inclined and, a recording medium having a program therefor recorded thereon are provided. When performing OPC, a relational expression between a recording power and asymmetry (a standard expression), a relational expression between a differential light intensity value and a recording power (a first detection expression), a relational expression between a recording power and a difference between a differential light intensity value and a reflected light amount ratio (a second detection expression), a relational expression between a reflected light amount ratio and a recording power (a third detection expression), a differential light intensity value with which optimum asymmetry can be obtained, a recording power, a reflected light amount ratio and the like are determined and stored. When information is actually recorded, the above expressions are used to correct the recording power so as to obtain optimum asymmetry at all times, whereby a decreased portion of the irradiated light amount per unit area caused with the inclination of the information recording surface can be corrected without correcting the irradiating direction of the laser light.
摘要翻译：即使光信息记录介质的信息记录表面倾斜，光信息记录方法和能够记录激光照射方向的信息保持恒定的光信息记录方法和装置，并且提供其上记录有程序的记录介质。当执行OPC时，记录功率和不对称性（标准表达式）之间的关系表达式，差分光强度值和记录功率（第一检测表达式）之间的关系表达式，记录功率与记录功率之间的关系表达式差分光强度值和反射光量比（第二检测表达式），反射光量比和记录功率之间的关系式（第三检测表达式），可获得最佳不对称性的差分光强度值，记录功率，反射光量比等被确定和存储。当实际记录信息时，使用上述表达式来校正记录功率，以便始终获得最佳不对称性，从而可以校正由信息记录表面的倾斜引起的每单位面积的照射光量的减少部分而不校正激光的照射方向。

8. 发明授权

US07050364B2 Optical scanning device 失效
标题翻译：光学扫描装置
公开(公告)号：US07050364B2
公开(公告)日：2006-05-23
申请号：US10213423
申请日：2002-08-06
申请人： Rene Verbecque , Petrus Theodorus Jutte
发明人： Rene Verbecque , Petrus Theodorus Jutte
IPC分类号： G11B7/95
CPC分类号： G11B7/1359 , G11B7/12 , G11B7/127 , G11B7/1362 , G11B2007/0006 , G11B2007/0013
摘要： An optical pickup unit for scanning an optical disk includes a first optical branch including a first radiation source for emitting a first radiation beam of a first wavelength, and a dichroic mirror (8) located in the path of the first radiation beam for reflecting the first beam towards the disk, and a second optical branch including a second radiation source for emitting a second radiation beam of a second wavelength, different to said first wavelength, and a folding mirror (28) located in the path of the second radiation beam for reflecting the second beam towards the disk. The first and second branches are stacked in the axial direction of the disk, and are arranged substantially perpendicularly when viewed along the axial direction.
摘要翻译：用于扫描光盘的光学拾取单元包括：第一光学分支，包括用于发射第一波长的第一辐射束的第一辐射源和位于第一辐射束的路径中的分色镜（8），用于反射第一波长以及第二光学分支，其包括用于发射与所述第一波长不同的第二波长的第二辐射束的第二辐射源，以及位于所述第二辐射束的路径中以用于反射的折射镜（28）第二个光束朝向磁盘。第一和第二分支沿圆盘的轴向堆叠，并且当沿着轴向方向观察时大致垂直地布置。

9. 发明授权

US5740147A Phase compensation of optical elements by tilting a half wave plate in a magneto-optic disk head 失效
标题翻译：通过在磁光盘头中倾斜半波片来对光学元件进行相位补偿
公开(公告)号：US5740147A
公开(公告)日：1998-04-14
申请号：US685973
申请日：1996-07-22
申请人： Toshiyuki Kase , Hiroshi Nishikawa
发明人： Toshiyuki Kase , Hiroshi Nishikawa
IPC分类号： G11B11/10 , G11B7/135 , G11B11/105 , G11B7/95 , G11B19/02
CPC分类号： G11B7/1365 , G11B11/10543
摘要： A laser beam emitted from a laser diode passes through a first polarization beam splitter to form a spot on a magnetic film of a magneto-optic disk. The plane of polarization of the laser beam reflected at the magneto-optic disk rotates, due to the Kerr effect, in a fixed direction in accordance with the direction of magnetization of the magnetic film. The laser beam then passes through a half-wave plate. The half-wave plate is attached on a base plate and tilted with respect to the optical axis of the laser beam so that its phase difference along the optical axis compensates the phase difference of the entire optic system. The laser beam passed through the half-wave plate is separated by the second beam splitter into a P polarization component and S polarization component, which are respectively detected by photodiodes.
摘要翻译：从激光二极管发射的激光束通过第一偏振分束器以在磁光盘的磁性膜上形成点。在磁光盘反射的激光束的偏振平面由于克尔效应而沿固定方向旋转，这与磁性膜的磁化方向一致。然后激光束通过半波片。半波片安装在基板上并相对于激光束的光轴倾斜，使得其沿光轴的相位差补偿整个光学系统的相位差。通过半波片的激光束由第二分束器分离成分别由光电二极管检测的P偏振分量和S偏振分量。

10. 发明授权

US5550797A Optical reproduction signal processing circuit for producing an RF signal and a servo signal with a high signal to noise ratio even though the RF signal component and the servo signal component partially overlap in frequency distribution 失效
标题翻译：即使RF信号分量和伺服信号分量在频率分布中部分重叠，也用于产生RF信号的光再现信号处理电路和具有高信噪比的伺服信号
公开(公告)号：US5550797A
公开(公告)日：1996-08-27
申请号：US344842
申请日：1994-11-23
申请人： Motoi Kimura , Shunji Yoshimura , Kyoko Suzuki
发明人： Motoi Kimura , Shunji Yoshimura , Kyoko Suzuki
IPC分类号： G11B7/005 , G11B7/09 , G11B7/95
CPC分类号： G11B7/0943 , G11B7/0941 , G11B7/005
摘要： A processing circuit for an optical reproduction signal provided with a signal generating unit for dividing an optical reproduction signal output from a photo detector and including a plurality of signal components into a plurality of signals having frequency regions corresponding to the respective plurality of signal components and performing current/voltage conversion on the divided optical reproduction signals and a correcting unit for adding the results of the current/voltage conversion of the signal components to correct the results of the current/voltage conversion.
摘要翻译：一种用于光学再现信号的处理电路，其具有信号产生单元，用于将从光检测器输出的光再现信号分离并包括多个信号分量，成为具有对应于多个信号分量的频率区域的多个信号，并且执行对分割后的光再现信号进行电流/电压转换，以及校正单元，用于将信号分量的电流/电压转换结果相加，以校正电流/电压转换的结果。

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