公开(公告)号：US20050207308A1

公开(公告)日：2005-09-22

申请号：US11049689

申请日：2005-02-04

申请人： Tatsuhiro Kobayashi ,  Koji Mishima

发明人： Tatsuhiro Kobayashi ,  Koji Mishima

IPC分类号： G11B7/0045 ,  G11B7/00 ,  G11B7/125

CPC分类号： G11B7/00456

摘要： When a space region shorter than the radius of a beam spot is formed, pre-heating with an assist pulse is not performed, and an off pulse pattern is fixed at a base power level. When a space region longer than the radius of the beam spot and shorter than the diameter of the beam spot is formed, an assist pulse is applied to the end of the space region to be formed. The length of the assist pulse is made greater, the longer the space region to be formed. Further, when a space region longer than the diameter of the beam spot is formed, an assist pulse is applied to the end of the space region to be formed, and the length of the assist pulse is kept constant regardless of the length of the space region to be formed.

摘要翻译： 当形成比光束点的半径短的空间区域时，不进行利用辅助脉冲的预热，断开脉冲图案被固定在基本功率水平。 当形成比光束点的半径长且短于光点的直径的空间区域时，将在要形成的空间区域的端部施加辅助脉冲。 辅助脉冲的长度越大，要形成的空间区越长。 此外，当形成比束斑直径长的空间区域时，辅助脉冲施加到要形成的空间区域的端部，并且辅助脉冲的长度与空间的长度无关地保持恒定 要形成的区域

公开(公告)号：US20050207295A1

公开(公告)日：2005-09-22

申请号：US11078700

申请日：2005-03-14

申请人： Junichi Furukawa ,  Kiyoshi Tateishi

发明人： Junichi Furukawa ,  Kiyoshi Tateishi

IPC分类号： G11B7/004 ,  G11B7/00 ,  G11B7/125 ,  H01S5/062 ,  H01S5/065

CPC分类号： G11B7/1263

摘要： A drive apparatus including: a superposition device which superposes a superposition signal on a drive signal for driving a light beam emission device that emits a light beam and which outputs the drive signal on which the superposition signal is superposed to the light beam emission device, a reference clock signal generation device which generates a reference clock signal, a frequency change device which changes a frequency of the superposition signal based on a quality index for indicating a quality of a reproduction signal that is obtained from a reflection light that is the light beam reflected on a record medium, a phase locked loop device which controls the changed frequency so as to be constant by a feedback method in use of the generated reference clock signal.

摘要翻译： 一种驱动装置，包括：叠加装置，其叠加驱动信号用于驱动发射光束的光束发射装置的驱动信号，并将叠加叠加信号叠加在该光束发射装置上的驱动信号输出; 产生参考时钟信号的参考时钟信号产生装置，基于用于指示从反射光束的反射光获得的再现信号的质量的质量指标改变叠加信号的频率的频率改变装置 在记录介质上，锁相环装置通过使用所生成的参考时钟信号的反馈方法来控制变化的频率以恒定。

公开(公告)号：US20050201226A1

公开(公告)日：2005-09-15

申请号：US11125074

申请日：2005-05-10

申请人： Kyung-geun Lee ,  Jung-wan Ko ,  Seong-sin Joo ,  In-sik Park

发明人： Kyung-geun Lee ,  Jung-wan Ko ,  Seong-sin Joo ,  In-sik Park

IPC分类号： G11B7/0045 ,  G11B7/09 ,  G11B7/095 ,  G11B7/125 ,  G11B7/135 ,  G11B7/24

CPC分类号： G11B7/126 ,  G11B7/0045 ,  G11B7/0908 ,  G11B7/0956 ,  G11B7/1372 ,  G11B7/24

摘要： A method of compensating for tilt and/or defocus and an apparatus therefor. The apparatus has a tilt and/or defocus detector detecting the tilt and/or defocus of an optical recording medium, and a recording compensator compensating a write pulse having a predetermined recording pattern using a predetermined system with respect to the detected tilt and/or defocus. The apparatus both adjusts write power with respect to the detected defocus, shifts the recording pattern with respect to the detected tilt, adjusts a power level and/or write time required for recording, and records a recording mark having a desired size (length and width). The apparatus is useful in compensating for tilt and/or defocus in a high-density optical system.

摘要翻译： 补偿倾斜和/或散焦的方法及其装置。 该装置具有检测光学记录介质的倾斜和/或散焦的倾斜和/或散焦检测器，以及相对于检测到的倾斜和/或散焦来使用预定系统补偿具有预定记录图案的写入脉冲的记录补偿器 。 该装置既调整相对于检测到的散焦的写入功率，相对于检测到的倾斜移动记录图案，调整记录所需的功率电平和/或写入时间，并记录具有期望尺寸（长度和宽度）的记录标记 ）。 该装置可用于补偿高密度光学系统中的倾斜和/或散焦。

公开(公告)号：US06944109B2

公开(公告)日：2005-09-13

申请号：US10064108

申请日：2002-06-12

申请人： Chung-Chen Wang ,  Sheng-Hwi Huang

发明人： Chung-Chen Wang ,  Sheng-Hwi Huang

IPC分类号： G11B7/125 ,  G11B7/22

CPC分类号： G11B7/126 ,  G11B7/22

摘要： An optical disk drive has a pick-up head for emitting laser beams, and an analog front-end circuit controlled by a microprocessor for controlling the operation of the pick-up head. An automatic control method for generating stable laser power of the optical disk drive includes getting a power reference function measured by a fixed quantity of optical disk sample drives, establishing the relationship between the laser power control signal of pick-up head from the analog front-end circuit by the microprocessor, and calculating the difference amount from a feedback signal minus a reference voltage on pick-up head side to generate a first function. When the analog front-end circuit receives this feedback signal, this method will be enabled automatically and adjust the first function of the laser power control signal to approach the reference function so as to adjust the intensity of the laser power generated by the pick-up head.

摘要翻译： 光盘驱动器具有用于发射激光束的拾取头和由微处理器控制的模拟前端电路，用于控制拾取头的操作。 用于产生光盘驱动器的稳定激光功率的自动控制方法包括获得由固定量的光盘样品驱动器测量的功率参考功能，建立拾取头的激光功率控制信号之间的关系， 并且从反馈信号减去拾取头侧的参考电压来计算差值，以产生第一功能。 当模拟前端电路接收到该反馈信号时，该方法将自动启用，并调整激光功率控制信号的第一功能接近参考功能，以调整由拾取器产生的激光功率的强度 头。

公开(公告)号：US06944106B2

公开(公告)日：2005-09-13

申请号：US10237601

申请日：2002-09-10

申请人： Haruyuki Suzuki

发明人： Haruyuki Suzuki

IPC分类号： G11B7/0045 ,  G11B7/125 ,  G11B19/26 ,  G11B7/00

CPC分类号： G11B7/126 ,  G11B7/0045 ,  G11B19/26

摘要： An information recording apparatus that records information with a substantially constant linear density in a circumferential direction of a recording medium having a disk shape, includes variable velocity recording control means, recording power modification means, recording power storage means, and initial recording power value setting means.

摘要翻译： 在具有盘形记录介质的圆周方向上记录具有基本上恒定的线密度的信息的信息记录装置包括变速记录控制装置，记录功率修改装置，记录功率存储装置和初始记录功率值设定装置 。

公开(公告)号：US06941046B2

公开(公告)日：2005-09-06

申请号：US10350182

申请日：2003-01-24

申请人： Susumu Koike ,  Kenichi Matsuda

发明人： Susumu Koike ,  Kenichi Matsuda

IPC分类号： G02B6/12 ,  G02B6/122 ,  G11B7/125 ,  G11B7/135 ,  H01S5/022 ,  G02B6/42 ,  H04J14/02

CPC分类号： B82Y20/00 ,  G02B6/12007 ,  G02B6/1225

摘要： The dual wavelength semiconductor laser source for an optical pickup includes: two semiconductor laser elements outputting laser beams having oscillating wavelengths different from each other; and a multiplexing waveguide, formed inside of a photonic crystal having a photonic band gap, having one output end outputting laser light at one end surface and two input ends at the other end surfaces. Output beams of the two semiconductor laser elements are coupled to the respective two input ends of the multiplexing waveguide and the two beams are outputted from the one output end of the multiplexing waveguide.

摘要翻译： 用于光学拾取器的双波长半导体激光源包括：输出具有彼此不同的振荡波长的激光束的两个半导体激光器元件; 以及形成在具有光子带隙的光子晶体内部的多路复用波导，具有在一个端面输出激光的一个输出端和在另一个端面的两个输入端。 两个半导体激光元件的输出光束耦合到复用波导的相应的两个输入端，并且两个波束从复用波导的一个输出端输出。

公开(公告)号：US06940804B2

公开(公告)日：2005-09-06

申请号：US10699740

申请日：2003-11-04

申请人： Ying-Lang Chuang

发明人： Ying-Lang Chuang

IPC分类号： G11B7/0045 ,  G11B7/125 ,  G11B7/00

CPC分类号： G11B7/126 ,  G11B7/0045

摘要： A power control circuit for an optical information recording device is disclosed. A power sampling signal from a photodiode is transmitted to a peal envelope acquiring circuit and a bottom envelope acquiring circuit and then sampled and held, which is fed-back to a laser diode driving circuit. The laser diode driving circuit alters a driving signal emitted to the laser diode according to the fed-back signal to adjust the power of the optical signal emitted from the laser diode. Therefore, cost is reduced and the power control circuit is particularly suitable for high-speed recordable optical disk drive.

摘要翻译： 公开了一种用于光信息记录装置的功率控制电路。 来自光电二极管的功率采样信号被传送到峰值包络获取电路和底包络获取电路，然后被采样和保持，其被反馈到激光二极管驱动电路。 激光二极管驱动电路根据反馈信号改变发射到激光二极管的驱动信号，以调整从激光二极管发射的光信号的功率。 因此，成本降低，功率控制电路特别适用于高速可记录光盘驱动器。

公开(公告)号：US06940803B2

公开(公告)日：2005-09-06

申请号：US09735608

申请日：2000-12-14

申请人： Hiroshi Hatano

发明人： Hiroshi Hatano

IPC分类号： G02B13/00 ,  G02B17/08 ,  G11B7/0045 ,  G11B7/12 ,  G11B7/125 ,  G11B7/135

CPC分类号： G11B7/1275 ,  G11B7/00455 ,  G11B7/1374 ,  G11B2007/13725 ,  G11B2007/13727

摘要： A recording and reproducing apparatus has an optical head that is provided with a laser light source for emitting light and a reflection converging optical system. The reflection converging optical system reflects light emitted from the laser light source, and converges the light on one point of a bottom surface of a solid immersion lens. Here, the reflection converging system has a first reflection surface for reflecting incident light; and a second reflection surface for further reflecting the light reflected by the first reflection surface and for converging the light onto the bottom the solid immersion lens.

摘要翻译： 记录和再现装置具有设置有用于发射光的激光源和反射会聚光学系统的光学头。 反射会聚光学系统反射从激光光源发出的光，并将光聚焦在固体浸没透镜的底面的一个点上。 这里，反射会聚系统具有用于反射入射光的第一反射面; 以及第二反射面，用于进一步反射由第一反射面反射的光，并将光会聚在固体浸没透镜的底部。

公开(公告)号：US20050190807A1

公开(公告)日：2005-09-01

申请号：US11058241

申请日：2005-02-16

申请人： Tomoichiro Toyama

发明人： Tomoichiro Toyama

IPC分类号： G11B7/125 ,  G11B7/127 ,  G11B7/135 ,  H01S5/00 ,  H01S5/02 ,  H01S5/028 ,  H01S5/10 ,  H01S5/223 ,  H01S5/227 ,  H01S5/343

CPC分类号： B82Y20/00 ,  G11B7/127 ,  H01S5/0287 ,  H01S5/2231 ,  H01S5/3432 ,  H01S5/34326 ,  H01S5/3436

摘要： A semiconductor lamination part (9) is formed by laminating semiconductor layers on a semiconductor substrate (1) so as to emit laser light. A first dielectric film (17) is provided on one edge face of the semiconductor lamination part to have a low and desired reflection coefficient and a second dielectric film (18) is provided on another edge face. A thickness of the first dielectric film is set to give a desired reflection coefficient according to a variation curve of a reflection coefficient to a thickness of aluminum oxide film at a constant oscillating wavelength and to have a positive gradient in the curve, or to have a negative gradient in variation curve of a reflection coefficient to a wavelength, and further has a thickness of 0.6λ or more in the optical distance. As a consequence, a semiconductor laser for a high output is obtained, in which a COD level can become high and an output can be stabilized even if a wavelength changes with an increasing temperature by operating of the semiconductor laser.

摘要翻译： 通过在半导体衬底（1）上层叠半导体层以发射激光来形成半导体层叠部（9）。 第一电介质膜（17）设置在半导体层叠部分的一个边缘面上以具有低的和期望的反射系数，并且在另一个边缘面上设置第二电介质膜（18）。 将第一电介质膜的厚度设定为根据反射系数与氧化铝膜的厚度在恒定振荡波长下的变化曲线的期望反射系数，并且在曲线中具有正梯度，或者具有 反射系数对波长的变化曲线的负梯度，并且在光学距离中还具有0.6lλ以上的厚度。 结果，获得了高电平的半导体激光器，其中，即使通过半导体激光器的操作使波长随着温度升高而使COD水平变高，输出也可以稳定。

公开(公告)号：US20050190679A1

公开(公告)日：2005-09-01

申请号：US11063994

申请日：2005-02-24

申请人： Mitsuru Mimori

发明人： Mitsuru Mimori

IPC分类号： G02B5/18 ,  G02B13/00 ,  G02B13/18 ,  G11B7/00 ,  G11B7/125 ,  G11B7/135

CPC分类号： G11B7/1353 ,  G11B7/1275 ,  G11B7/1374 ,  G11B7/13922

摘要： The objective optical system of the present invention includes a first diffraction structure that applies diffraction to the light fluxes of wavelength λ1, wavelength λ2 and wavelength λ3 so that the diffracted lights of the L-th order (L: odd number), M-th order (M: integer) and N-th order (N: integer) each will have the maximum diffraction efficiency, and a first optical path difference-generating structure that substantially provides a phase difference to or two of the light fluxes of wavelength λ1, wavelength λ2 and wavelength λ3.

摘要翻译： 本发明的物镜光学系统包括对波长λ1，波长λ2和波长λ3的光束施加衍射的第一衍射结构，使得L阶衍射光（L：奇数）， M级（M：整数）和N级（N：整数）各自具有最大的衍射效率，以及第一光程差产生结构，其基本上提供与 波长λ1，波长λ2和波长λ3。