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1. 发明授权

US08451700B2 Optical pickup device and optical read/write apparatus 有权
标题翻译：光学拾取装置和光学读/写装置
公开(公告)号：US08451700B2
公开(公告)日：2013-05-28
申请号：US13609484
申请日：2012-09-11
申请人： Yasushi Kobayashi , Yohichi Saitoh , Kazuo Momoo
发明人： Yasushi Kobayashi , Yohichi Saitoh , Kazuo Momoo
IPC分类号： G11B7/00
CPC分类号： G11B7/00458 , G11B7/0901 , G11B7/0912 , G11B7/0916 , G11B7/1353 , G11B7/1381
摘要： In one embodiment, the optical pickup device includes: a light source that emits a light beam; a diffractive element that diffracts the light beam and generates a zero-order and ±first-order diffracted light beams; an objective lens that converges the diffracted light beams onto the same track on the storage medium; and a photodetector that receives the diffracted light beams reflected from the storage medium. If a distance from a light beam spot left by the zero-order diffracted light beam on the track to light beam spots left by the ±first-order diffracted light beams on that track is d [μm], the scanning linear velocity of the storage medium is v [m/s], and a time it takes for a phase-change material of the storage medium that has once been melted by the zero-order diffracted light beam to solidify is T [μs], vT≦d is satisfied.
摘要翻译：在一个实施例中，光学拾取装置包括：发射光束的光源; 衍射元件，衍射光束并产生零级和±一级衍射光束; 将衍射光束会聚在存储介质上的同一轨道上的物镜; 以及光接收器，其接收从存储介质反射的衍射光束。如果从光轨上的零级衍射光束留下的光束点与该轨道上±1级衍射光束留下的光束点的距离为d [m]，则存储器的扫描线速度介质是v [m / s]，并且由零级衍射光束一度熔化的存储介质的相变材料固化所花费的时间是T [mus]，vT @ d 。

2. 发明授权

US08121013B2 Optical pickup apparatus and optical disc apparatus 失效
标题翻译：光拾取装置和光盘装置
公开(公告)号：US08121013B2
公开(公告)日：2012-02-21
申请号：US12567299
申请日：2009-09-25
申请人： Kenji Nagatomi , Yoichi Tsuchiya
发明人： Kenji Nagatomi , Yoichi Tsuchiya
IPC分类号： G11B7/135
CPC分类号： G11B7/094 , G11B7/0901 , G11B7/0912 , G11B7/0943 , G11B7/133 , G11B7/1353 , G11B7/1378 , G11B2007/0013
摘要： An optical pickup apparatus changes a propagation direction of luminous fluxes, out of a laser light reflected by a disc, in four luminous flux regions set about a laser optical axis so as to mutually disperse these luminous fluxes. A signal light region in which only a signal light is present appears on a detection surface of a photodetector. A plurality of sensors for a signal light are placed at positions irradiated with the signal light within the region. When an arithmetic process is performed on a detection signal outputted from each sensor, a DC component occurring in a tracking error signal is suppressed.
摘要翻译：光拾取装置将由光反射的激光中的光束的传播方向改变为围绕激光光轴设置的四个光通量区域中，以便相互分散这些光通量。在光电检测器的检测表面上出现仅存在信号光的信号光区域。用于信号光的多个传感器被放置在用该区域内的信号光照射的位置处。当对从每个传感器输出的检测信号执行运算处理时，抑制在跟踪误差信号中出现的DC分量。

3. 发明授权

US07903006B2 Automatic power control system for optical disc drive and method thereof 有权
标题翻译：用于光盘驱动器的自动功率控制系统及其方法
公开(公告)号：US07903006B2
公开(公告)日：2011-03-08
申请号：US12273601
申请日：2008-11-19
申请人： Bing-Yu Hsieh , Ming-Jiou Yu , Kuo-Jung Lan , Shu-Hung Chou , Chih-Ching Chen , Chia-Wei Liao
发明人： Bing-Yu Hsieh , Ming-Jiou Yu , Kuo-Jung Lan , Shu-Hung Chou , Chih-Ching Chen , Chia-Wei Liao
IPC分类号： H03M1/00
CPC分类号： H03M1/1225 , G11B7/0903 , G11B7/0912 , G11B7/0941 , G11B7/1263 , H03M1/129
摘要： An automatic power control system, a down sampling circuit and a down sampling method. The automatic power control system is incorporated in an optical disc drive comprising a laser diode for receiving a control signal to generate a laser beam; and a photodetector for detecting the laser beam to generate an analog input signal. The automatic power control system comprises an analog-to-digital converter, a down sampling circuit, a comparator, and a digital-to-analog converter. The analog-to-digital converter converts the analog input signal to digital data. The down sampling circuit, coupled to the analog-to-digital converter, comprises a down sampler, a counter, and a controller. The down sampler receives a predetermined amount of digital data to generate representation data. The counter, coupled to the down sampler, calculates the amount of digital data, and resets the down sampler when the amount equals or exceeds the predetermined count. The controller, coupled to the counter, disables the counter when the digital data is invalid. The comparator, coupled to the down sampling circuit, compares the representation data with predetermined target data to generate error data. The digital-to-analog converter, coupled to the comparator, converts the error data to analog to generate the control signal.
摘要翻译：自动功率控制系统，下采样电路和下采样方法。自动功率控制系统结合在包括用于接收控制信号以产生激光束的激光二极管的光盘驱动器中; 以及用于检测激光束以产生模拟输入信号的光电检测器。自动功率控制系统包括模数转换器，下采样电路，比较器和数 - 模转换器。模数转换器将模拟输入信号转换为数字数据。耦合到模数转换器的下采样电路包括下采样器，计数器和控制器。下采样器接收预定量的数字数据以产生表示数据。耦合到下采样器的计数器计算数字数据量，并且当量等于或超过预定计数时重置下采样器。耦合到计数器的控制器在数字数据无效时禁用计数器。耦合到下采样电路的比较器将表示数据与预定目标数据进行比较以产生误差数据。耦合到比较器的数模转换器将误差数据转换成模拟以产生控制信号。

4. 发明申请

US20100271926A1 OPTICAL PICKUP DEVICE AND OPTICAL DISC DEVICE 失效
标题翻译：光学拾取装置和光盘装置
公开(公告)号：US20100271926A1
公开(公告)日：2010-10-28
申请号：US12768510
申请日：2010-04-27
申请人： Kenji Nagatomi
发明人： Kenji Nagatomi
IPC分类号： G11B7/135
CPC分类号： G11B7/1378 , G11B7/0903 , G11B7/0912 , G11B7/094 , G11B7/133
摘要： An optical pickup device imparts different astigmatisms from each other to light fluxes in four light flux areas formed around an optical axis of laser light, out of the laser light reflected on a disc. The optical pickup device also changes the propagating directions of the light fluxes in the light flux areas to separate the light fluxes in the light flux areas each other. A signal light area where only signal light exists is defined on a detection surface of a photodetector. Eight sensing portions are arranged at a position corresponding to the signal light area. According to this arrangement, only the signal light is received by the sensing portions to thereby suppress deterioration of a detection signal resulting from stray light. Further, a push-pull signal, whose DC component is suppressed, is obtained by computing an output from the eight sensing portions by a predetermined formula.
摘要翻译：光拾取装置将不同的散光彼此分配给在光盘上反射的激光中形成在激光的光轴周围的四个光通量区域中的光通量。光学拾取装置还改变光束区域中的光束的传播方向，以分离光束区域中的光束。仅在信号光存在的信号光区域被限定在光检测器的检测表面上。八个感测部分布置在对应于信号光区域的位置处。根据这种布置，只有信号光被感测部分接收，从而抑制由杂散光引起的检测信号的劣化。此外，通过以预定公式计算来自八个感测部分的输出，获得DC分量被抑制的推挽信号。

5. 发明授权

US07787347B2 Optical head device and optical information processor 失效
标题翻译：光头设备和光信息处理器
公开(公告)号：US07787347B2
公开(公告)日：2010-08-31
申请号：US11918426
申请日：2006-04-10
申请人： Tatsuo Itoh , Teruhiro Shiono , Seiji Nishino
发明人： Tatsuo Itoh , Teruhiro Shiono , Seiji Nishino
IPC分类号： G11B7/00
CPC分类号： G11B7/1356 , G11B7/0901 , G11B7/0912 , G11B7/0938 , G11B7/123 , G11B7/131 , G11B7/133 , G11B7/1353 , G11B2007/0013
摘要： A laser beam 32 reflected by an information layer of a multilayer optical disc 26 is reflected and split by reflecting surfaces 31a′, 31b, 31c and 31d to be incident on a photodetector element 36 as laser beams 33, 34 and 35. The laser beam 34 is collected on a light receiving region 38 for RF detection to generate an RF signal. The laser beams 33, 35 are incident on light receiving regions 37a, 37b for focus detection, and a focus error signal is generated by an SSD method. A laser beam 65 reflected by an information layer adjacent to the above information layer partially transmits through the reflecting surface 31a′ to be imaged on a light receiving region 66 for tracking detection, and a tracking error signal is generated.
摘要翻译：由多层光盘26的信息层反射的激光束32被作为激光束33,34,35的入射到光电检测元件36的反射面31a'，31b，31c，31d反射并分割。激光束 34被收集在用于RF检测的光接收区域38上以产生RF信号。激光束33,35入射到受光区域37a，37b上进行焦点检测，通过SSD方法产生聚焦误差信号。由与上述信息层相邻的信息层反射的激光束65通过反射面31a'进行部分透射，以被成像在用于跟踪检测的光接收区域66上，并产生跟踪误差信号。

6. 发明申请

US20090010118A1 OPTICAL DISK UNIT 有权
标题翻译：光盘单元
公开(公告)号：US20090010118A1
公开(公告)日：2009-01-08
申请号：US12066869
申请日：2006-09-13
申请人： Akihiro Arai , Takeharu Yamamoto
发明人： Akihiro Arai , Takeharu Yamamoto
IPC分类号： G11B5/09
CPC分类号： G11B7/0912
摘要： To provide an optical disc drive that can shift the focal point steadily to a focus controllable range.An optical disc drive includes: an optical branching element for splitting light from a light source into main and sub-beams; a condenser element for condensing the main and sub-beams; a photodetector section including photodetectors to receive reflected portions of the main and sub-beams, each photodetector having photosensitive areas, each of which outputs a signal representing the intensity of light received there; and a computing section for generating a first focus signal, representing where the focal point of the main beam is located with respect to the storage layer, based on the reflected light of the main beam, and a second focus signal based on the reflected light of the main and sub-beams. The drive performs a first type of control to shift the focal point toward the storage layer, switches the first type into a second type based on a result of comparison to the first focus error signal and then performs a second type of control to make the focal point keep up with the storage layer.
摘要翻译：提供可将焦点稳定地转移到焦点可控范围的光盘驱动器。光盘驱动器包括：光分路元件，用于将来自光源的光分成主光束和子光束; 用于冷凝主光束和副光束的聚光元件; 光电检测器部分包括用于接收主光束和副光束的反射部分的光电检测器，每个光电检测器具有感光区域，每个光电检测器输出表示在那里接收的光的强度的信号; 以及计算部分，用于基于主光束的反射光产生表示主光束的焦点相对于存储层位于何处的第一聚焦信号，以及基于主光束的反射光的第二聚焦信号主梁和副梁。驱动器执行第一类型的控制以将焦点移向存储层，基于与第一聚焦误差信号的比较结果将第一类型切换为第二类型，然后执行第二类型的控制以使聚焦跟上存储层。

7. 发明申请

US20080298181A1 OPTICAL DISC APPARATUS AND OPTICAL DISC APPARATUS CONTROL METHOD 审中-公开
标题翻译：光盘设备和光盘设备控制方法
公开(公告)号：US20080298181A1
公开(公告)日：2008-12-04
申请号：US12128208
申请日：2008-05-28
申请人： Masashi Ueno , Teruyoshi Kogure
发明人： Masashi Ueno , Teruyoshi Kogure
IPC分类号： G11B7/00
CPC分类号： G11B7/0945 , G11B7/00736 , G11B7/0912 , G11B7/094 , G11B7/0941 , G11B7/1267
摘要： According to one embodiment, a control method, includes moving a pickup head to an adjustment position adjusting the quantity of adjustment of focus balance measuring the amplitude of an RF signal in the adjustment position adjusting the focus balance adjustment quantity and measuring the RG signal amplitude a plurality of times estimating the focus balance adjustment quantity at which the RF signal amplitude is maximized from the measured focus balance adjustment quantities and RF signal amplitude moving the pickup head to a different adjustment position estimating the focus balance adjustment quantity at which the RF signal amplitude is maximized in the different adjustment position by adjusting the focus balance adjustment quantity and measuring the RF signal amplitude a plurality of times and adjusting the focus balance adjustment quantity to the focus balance adjustment quantity estimated in the different adjustment position.
摘要翻译：根据一个实施例，一种控制方法包括将拾取头移动到调节位置的调整位置的调整位置，调节聚焦平衡的调整量，在调节聚焦平衡调节量的调整位置中测量RF信号的幅度，并测量RG信号振幅a 从测量的聚焦平衡调节量估计RF信号幅度最大化的聚焦平衡调节量和将拾取头移动到不同调节位置的RF信号的多次，估计RF信号振幅为的聚焦平衡调节量通过调整聚焦平衡调节量并且测量RF信号幅度多次并将焦点平衡调节量调整到在不同调节位置中估计的焦距平衡调节量，使不同调节位置最大化。

8. 发明申请

US20080232223A1 OPTICAL PICKUP APPARATUS AND BEAM SPLITTER 有权
标题翻译：光学拾取装置和光束分离器
公开(公告)号：US20080232223A1
公开(公告)日：2008-09-25
申请号：US12048036
申请日：2008-03-13
申请人： Shinzoh MURAKAMI
发明人： Shinzoh MURAKAMI
IPC分类号： G11B7/00
CPC分类号： G11B7/0903 , G11B7/0912 , G11B7/131 , G11B7/1353 , G11B2007/0013
摘要： There is provided an optical pickup apparatus and a beam splitter which are capable of suppressing an adverse effect resulting from light reflected by a non-light-condensed layer that is different from a light-condensed layer. In respective TES light-receiving sections, interposed light-receiving elements are disposed so as to be adjacent to first sub beam-receiving elements. The interposed light-receiving elements are disposed away from both of positions where a main beam reflected by a light-condensing recording layer is condensed and where respective sub beams reflected by the light-condensing recording layer are condensed, and disposed so as to be adjacent to the first sub beam-receiving elements. The interposed light-receiving elements receive the main beam reflected by a non-light-condensing recording layer In a compensating section, results of light received by the first sub beam-receiving elements are compensated based on results of light received by the interposed light-receiving elements.
摘要翻译：提供了一种光学拾取装置和分束器，其能够抑制由与光聚集层不同的非光聚集层反射的光产生的不利影响。在相应的TES光接收部分中，插入的光接收元件设置成与第一子光束接收元件相邻。所插入的光接收元件被设置为远离由聚光记录层反射的主光束被聚集的位置，并且由聚光记录层反射的各个子光束被冷凝，并且被设置为相邻到第一子光束接收元件。插入的光接收元件接收由非聚光记录层反射的主光束。在补偿部分中，由第一子光束接收元件接收的光的结果基于插入的光接收元件所接收的光的结果来补偿，接收元件。

9. 发明申请

US20070286038A1 Optimizing focus point for optical disc 有权
标题翻译：优化光盘对焦点
公开(公告)号：US20070286038A1
公开(公告)日：2007-12-13
申请号：US11450846
申请日：2006-06-09
申请人： Ainobu Yoshimoto , Hung Phi Dang
发明人： Ainobu Yoshimoto , Hung Phi Dang
IPC分类号： G11B7/00
CPC分类号： G11B7/0912 , G11B7/094 , G11B7/0945
摘要： An apparatus comprising a focus controller, a photo-diode sensor, a data circuit, a focus error creation circuit and a focus offset circuit. The focus controller may be configured to control a lens in relation to a laser beam and allow the laser beam to focus on a disc. The photo-diode sensor may be configured to generate one or more photo-diode signals in response to the laser beam. The data circuit may be configured to generate one or more disc status signals in response to the one or more photo-diode signals. The focus error creation circuit may generate a focus error signal. The focus error signal may provide a first value based on a focus point of the laser beam. The focus offset circuit may be configured to offset the first value of the focus error signal to a second value in response to the disc status signals to allow the focus controller to move the lens to a position which will increase the focus point of the laser beam on the disc.
摘要翻译：一种包括聚焦控制器，光电二极管传感器，数据电路，聚焦误差产生电路和聚焦偏移电路的设备。聚焦控制器可以被配置为相对于激光束控制透镜，并允许激光束聚焦在光盘上。光电二极管传感器可以被配置为响应于激光束产生一个或多个光电二极管信号。数据电路可以被配置为响应于一个或多个光电二极管信号而产生一个或多个光盘状态信号。聚焦误差产生电路可产生聚焦误差信号。聚焦误差信号可以基于激光束的焦点提供第一值。焦点偏移电路可以被配置为响应于盘状态信号将聚焦误差信号的第一值偏移到第二值，以允许聚焦控制器将透镜移动到将增加激光束的焦点的位置在光碟上。

10. 发明授权

US07283432B2 Method and device for correcting optical path deviation of an optical pickup in an optical recording system 有权
标题翻译：用于校正光学记录系统中的光学拾取器的光程偏差的方法和装置
公开(公告)号：US07283432B2
公开(公告)日：2007-10-16
申请号：US10912007
申请日：2004-08-05
申请人： Hsu-Feng Ho
发明人： Hsu-Feng Ho
IPC分类号： G11B7/00
CPC分类号： G11B7/0912 , G11B7/094
摘要： A device for correcting optical path deviation of an optical pickup in an optical recording system includes a push-pull signal generator for generating a push-pull signal while the optical pickup is operated in a focusing and non-track-locking state, a low-pass filter module for generating a direct current (DC) level error signal from the push-pull signal, and a combiner for generating a calibrating servo signal based on the DC level error signal and a servo control signal from a servo controller of the optical recording system and for applying the calibrating servo signal to a servo mechanism of the optical recording system so as to adjust position of an objective lens of the optical pickup in order to maintain the DC level of the push-pull signal at an ideal level.
摘要翻译：用于校正光学记录系统中的光学拾取器的光路偏差的装置包括：推挽信号发生器，用于在光学拾取器以聚焦和非轨道锁定状态操作时产生推挽信号; 用于从推挽信号产生直流（DC）电平误差信号的通过滤波器模块，以及用于基于直流电平误差信号产生校准伺服信号的组合器和来自光学记录的伺服控制器的伺服控制信号系统，并将校准伺服信号施加到光学记录系统的伺服机构，以便调整光学拾取器的物镜的位置，以便将推挽信号的直流电平保持在理想水平。

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