专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08085631B2 Tracking control device, tracking control method, and optical disc apparatus 有权
标题翻译：跟踪控制装置，跟踪控制方法和光盘装置
公开(公告)号：US08085631B2
公开(公告)日：2011-12-27
申请号：US12793038
申请日：2010-06-03
申请人： Takashi Kishimoto , Takeharu Yamamoto , Yoshirou Kashiwabara , Akihiro Arai
发明人： Takashi Kishimoto , Takeharu Yamamoto , Yoshirou Kashiwabara , Akihiro Arai
IPC分类号： G11B7/00
CPC分类号： G11B7/0903 , G11B7/094 , G11B7/0941 , G11B7/0943 , G11B2007/0013
摘要： The invention provides a tracking control device, a tracking control method, and an optical disc apparatus that enable to stably perform the tracking control, and reduce an influence of stray light from the other layer on the tracking control. A sub push-pull signal correcting section corrects a sub push-pull signal to be generated from returning light of a sub beam in such a manner that a track crossing component of a main push-pull signal to be generated from returning light of a main beam, and a track crossing component of the sub push-pull signal to be generated from the returning light of the sub beam are canceled. A low pass filter reduces a high frequency component of the sub push-pull signal corrected by the sub push-pull signal correcting section. A subtractor subtracts a sub push-pull signal passing the low pass filter from the main push-pull signal to thereby generate a tracking error signal.
摘要翻译：本发明提供一种跟踪控制装置，跟踪控制方法和光盘装置，其能够稳定地执行跟踪控制，并且减少来自另一层的杂散光对跟踪控制的影响。子推挽信号校正部分校正从子光束的返回光产生的副推挽信号，使得从主信号的返回光产生的主推挽信号的轨道交叉分量并且从副光束的返回光产生的副推挽信号的轨迹交叉分量被消除。低通滤波器降低由副推挽信号校正部校正的副推挽信号的高频分量。减法器从主推挽信号中减去通过低通滤波器的副推挽信号，从而产生跟踪误差信号。

2. 发明授权

US06925048B2 Optical disc apparatus 有权
标题翻译：光盘装置
公开(公告)号：US06925048B2
公开(公告)日：2005-08-02
申请号：US10046561
申请日：2001-11-09
申请人： Yuichi Kuze , Katsuya Watanabe , Takeharu Yamamoto , Takashi Kishimoto , Kenji Fujiune
发明人： Yuichi Kuze , Katsuya Watanabe , Takeharu Yamamoto , Takashi Kishimoto , Kenji Fujiune
IPC分类号： G11B7/007 , G11B7/085 , G11B20/10 , G11B20/12 , G11B27/24 , G11B27/32 , G11B7/24
CPC分类号： G11B20/0026 , G11B7/00736 , G11B7/08505 , G11B20/10009 , G11B27/24 , G11B27/329 , G11B2020/1259 , G11B2220/211 , G11B2220/2562
摘要： An optical disc apparatus according to the present invention is usable for an optical disc including a bar code area and a control data area adjacent to the bar code area in a radial direction of the optical disc. The optical disc apparatus includes an optical head for directing an optical beam toward the optical disc so as to form an optical spot on the optical disc and output a signal in accordance with the optical beam reflected by the optical disc, a bar code area determination section for determining whether or not the optical spot is positioned on the bar code area of the optical disc based on the signal output by the optical head; and a control section for controlling the optical head so that the optical spot moves toward the control data area, when the optical spot is determined to be positioned on the bar code area.
摘要翻译：根据本发明的光盘装置可用于包括条形码区域和与光盘径向方向上的条形码区域相邻的控制数据区域的光盘。光盘装置包括用于将光束引向光盘以在光盘上形成光点并根据由光盘反射的光束输出信号的光学头，条形码区域确定部分用于基于由光学头输出的信号确定光点是否位于光盘的条形码区域上; 以及控制部，用于当确定光点被定位在条形码区域上时，控制光学头，使得光点朝向控制数据区移动。

3. 发明授权

US06317395B1 Optical disc device for varying PLL characteristic and servo characteristic based on actual reproduction speed 失效
标题翻译：用于根据实际再现速度改变PLL特性和伺服特性的光盘装置
公开(公告)号：US06317395B1
公开(公告)日：2001-11-13
申请号：US09217831
申请日：1998-12-22
申请人： Takeharu Yamamoto , Katsuya Watanabe , Mitsurou Moriya , Takashi Kishimoto
发明人： Takeharu Yamamoto , Katsuya Watanabe , Mitsurou Moriya , Takashi Kishimoto
IPC分类号： G11B700
CPC分类号： G11B7/0908 , G11B7/0941
摘要： The object of the present invention is to realize a stable control and a stable signal reproduction in an optical disc device. When a head unit (110) is shifted in a radial direction or a reproduction speed is varied, a reproduction speed is detected based on a radial position at which the head unit is located and the number of rotaions of a motor (111), and settings of a focusing gain, a tracking gain, an amplification factor of an equalizer circuit (130), a band-limited frequency, a loop gain of a PLL circuit (131) and a divide ratio are varied based on said reproduction speed. Further, an accurate detection of an out of focus operation can be executed by using either one signal of a reflected-light quantity, an RF signal amplitude and a drive of a focusing actuator, or combined signals thereof. Thereby, a stable control and signal reproduction can be provided.
摘要翻译：本发明的目的是在光盘装置中实现稳定的控制和稳定的信号再现。当头单元（110）沿径向移动或再现速度变化时，基于头单元所在的径向位置和马达（111）的旋转数目来检测再现速度，并且基于所述再现速度，改变聚焦增益，跟踪增益，均衡器电路（130）的放大系数，带限频率，PLL电路（131）的环路增益和分频比的设置。此外，可以通过使用反射光量的一个信号，RF信号幅度和聚焦致动器的驱动器或其组合信号来执行对焦操作的精确检测。从而可以提供稳定的控制和信号再现。

4. 发明授权

US07193941B2 Optical disc drive with clock synchronization and rotational speed detection 失效
标题翻译：具有时钟同步和转速检测的光盘驱动器
公开(公告)号：US07193941B2
公开(公告)日：2007-03-20
申请号：US10401449
申请日：2003-03-28
申请人： Takeharu Yamamoto , Yoshihiro Kanda , Takashi Kishimoto , Rie Takahashi , Tetsuya Shihara
发明人： Takeharu Yamamoto , Yoshihiro Kanda , Takashi Kishimoto , Rie Takahashi , Tetsuya Shihara
IPC分类号： G11B27/10
CPC分类号： G11B7/0053 , G11B7/08517 , G11B19/28 , G11B20/10 , G11B20/1258 , G11B27/24 , G11B2020/10916 , G11B2020/1239 , G11B2020/1267 , G11B2020/1287 , G11B2020/1288 , G11B2220/216 , G11B2220/2537 , G11B2220/2541 , G11B2220/2562 , G11B2220/2575
摘要： An optical disc drive includes: a motor for rotating an optical disc thereon; a photoelectric transducer for converting a light beam, reflected from or transmitted through the disc, into an electric signal; a clock sync signal reader for extracting and outputting a read signal, representing a clock synchronization mark, from the electric signal; a clock generator for generating a clock signal having a variable frequency; a phase locking controller for controlling the clock generator to synchronize the clock signal in phase with the output signal of the clock sync signal reader; and a mechanism for displacing a light beam spot toward a target track on the disc. During a seek operation of displacing the light beam spot toward the target track, the clock generator is controlled to obtain a frequency to be expected on the target track and output a clock signal having the expected frequency.
摘要翻译：光盘驱动器包括：用于在其上旋转光盘的马达; 用于将从光盘反射或透过光盘的光束转换为电信号的光电传感器; 时钟同步信号读取器，用于从电信号中提取并输出表示时钟同步标记的读取信号; 时钟发生器，用于产生具有可变频率的时钟信号; 相位锁定控制器，用于控制时钟发生器，使时钟信号同步于时钟同步信号读取器的输出信号; 以及用于将光束点移向盘上的目标轨道的机构。在将光束点移向目标轨道的寻道操作期间，控制时钟发生器以获得目标轨道上预期的频率并输出具有预期频率的时钟信号。

5. 发明授权

US06891785B2 Optical disc reproduction apparatus 失效
标题翻译：光盘再现装置
公开(公告)号：US06891785B2
公开(公告)日：2005-05-10
申请号：US10153215
申请日：2002-05-21
申请人： Takeharu Yamamoto , Takashi Kishimoto , Yoshihiro Kanda , Hiroyuki Yamaguchi
发明人： Takeharu Yamamoto , Takashi Kishimoto , Yoshihiro Kanda , Hiroyuki Yamaguchi
IPC分类号： G11B7/0037 , G11B7/007 , G11B20/14 , G11B20/18 , G11B27/19 , G11B27/22 , G11B27/24 , G11B27/26 , H03L7/08 , G11B7/00
CPC分类号： G11B27/24 , G11B7/00375 , G11B7/00745 , G11B20/1403 , G11B20/1883 , G11B20/1889 , G11B27/19 , G11B27/22 , G11B27/26 , G11B2220/20 , H03L7/08
摘要： An optical disc reproduction apparatus includes a sector detection section for detecting a sector; a sector reproduction time measuring section for measuring a reproduction time of the sector, and outputting sector reproduction time data which represents the measured reproduction time of the sector; an unrecorded portion detection section for detecting an unrecorded portion which is a portion of the sector in which no data is recorded; an unrecorded portion time measuring section for measuring a reproduction time of the unrecorded portion, and outputting unrecorded portion time data which represents the measured reproduction time of the unrecorded portion; and a sector determination section for determining whether the sector is an unrecorded sector or not, based on a relationship between the sector reproduction time data and the unrecorded portion time data, the unrecorded sector being a sector which is in an unrecorded state.
摘要翻译：光盘再现装置包括用于检测扇区的扇区检测部分; 扇区再现时间测量部分，用于测量扇区的再现时间，并输出表示所测量的扇区再现时间的扇区再现时间数据; 未记录部分检测部分，用于检测作为不记录数据的扇区的一部分的未记录部分; 未记录部分时间测量部分，用于测量未记录部分的再现时间，并输出表示未记录部分的测量再现时间的未记录部分时间数据; 以及扇区确定部分，用于基于扇区再现时间数据和未记录部分时间数据之间的关系来确定扇区是否是未记录扇区，未记录扇区是处于未记录状态的扇区。

6. 发明授权

US06567357B2 Optical disk apparatus 有权
标题翻译：光盘装置
公开(公告)号：US06567357B2
公开(公告)日：2003-05-20
申请号：US09839522
申请日：2001-04-20
申请人： Takashi Kishimoto , Yuuichi Kuze , Kenji Fujiune , Takeharu Yamamoto , Katsuya Watanabe
发明人： Takashi Kishimoto , Yuuichi Kuze , Kenji Fujiune , Takeharu Yamamoto , Katsuya Watanabe
IPC分类号： G11B700
CPC分类号： G11B7/08511 , G11B2007/0013
摘要： An optical disk apparatus of the present invention measures a surface deflection component (shape of surface deflection) from a low-pass component of a compensating filter in a surface deflection measuring part provided in a DSP. Furthermore, the optical disk apparatus calculates timing at which a positional change in a surface deflection component in time required for focus jumping is a predetermined value or less in a timing calculating part, and starts focus jumping at the timing. Because of this, stable focus jumping is made possible.
摘要翻译：本发明的光盘装置从设置在DSP中的表面偏转测量部中的补偿滤波器的低通分量测量表面偏转分量（表面偏转的形状）。此外，光盘装置计算定时计算部分中聚焦跳跃所需时间中的表面偏转分量的位置变化为预定值或更小的定时，并且在定时开始聚焦跳跃。因此，可以实现稳定的重点跳跃。

7. 发明授权

US06493304B2 Optical disk apparatus 有权
标题翻译：光盘装置
公开(公告)号：US06493304B2
公开(公告)日：2002-12-10
申请号：US09929225
申请日：2001-08-13
申请人： Katsuya Watanabe , Takeharu Yamamoto , Takashi Kishimoto , Mitsurou Moriya
发明人： Katsuya Watanabe , Takeharu Yamamoto , Takashi Kishimoto , Mitsurou Moriya
IPC分类号： G11B700
CPC分类号： G11B19/12 , G11B7/08523
摘要： An optical disk apparatus for reproducing, or recording, information from plural types of information carriers, including: two or more light sources with different wavelengths; converging parts for converging light beams emitted from the light sources on the information carrier; movement parts for moving the converged light beam in a direction substantially perpendicular to the surface of the information carrier; convergence condition detection parts for outputting a signal corresponding to the convergence condition of the light beam on the information carrier; amplitude detection parts for measuring the amplitude of the convergence condition signal; and focus control parts for driving the movement parts in accordance with the convergence condition signal and performing control so that the convergence condition of the light beam on the information carrier becomes substantially constant. Upon start, or restart, the apparatus determines the type of loaded information carrier based on a signal from the amplitude detection parts.
摘要翻译：一种用于再现或记录来自多种信息载体的信息的光盘装置，包括：两个或更多个具有不同波长的光源; 用于将从光源发射的光束会聚在信息载体上的会聚部分; 用于沿着基本上垂直于信息载体表面的方向移动会聚光束的运动部件; 会聚条件检测部分，用于输出与信息载体上的光束的会聚条件对应的信号; 用于测量收敛条件信号的振幅的振幅检测部分; 以及用于根据会聚条件信号驱动运动部分的聚焦控制部分，并进行控制，使得光束在信息载体上的会聚状态变得基本恒定。在开始或重新启动时，装置基于来自幅度检测部分的信号来确定加载的信息载体的类型。

8. 发明授权

US06339566B1 Optical recording/reproduction device 失效
标题翻译：光记录/再现设备
公开(公告)号：US06339566B1
公开(公告)日：2002-01-15
申请号：US09713223
申请日：2000-11-16
申请人： Takashi Kishimoto , Katsuya Watanabe , Mitsurou Moriya , Takeharu Yamamoto , Kouichi Ikeuchi , Kazushi Andoh
发明人： Takashi Kishimoto , Katsuya Watanabe , Mitsurou Moriya , Takeharu Yamamoto , Kouichi Ikeuchi , Kazushi Andoh
IPC分类号： G11B709
CPC分类号： G11B7/08541 , G11B7/08517 , G11B7/08529
摘要： A speed profile constituting the target speed for the next drive process during searching is generated by target speed generating section 140 and tracking actuator 132 is driven using the error signal in regard to the speed of movement of the light beam calculated by movement speed detection section 141 from a pulse signal obtained by converting the TE signal to binary form. Also linear motor 139 is driven using the difference signal obtained from the target speed and the speed of movement. Tracking actuator 132 is controlled so as to suppress swinging of focusing lens 107 during searching and linear motor 139 moves, during searching, under tracking control to a target speed.
摘要翻译：由目标速度生成部140生成构成搜索期间的下一个驱动处理的目标速度的速度曲线，并且使用关于由移动速度检测部141计算的光束的移动速度的误差信号来驱动跟踪致动器132 从通过将TE信号转换为二进制形式获得的脉冲信号。还使用从目标速度和移动速度获得的差分信号来驱动线性电动机139。控制跟踪致动器132，以便在搜索期间抑制聚焦透镜107在搜索期间的移动，并且在跟踪控制期间移动到目标速度。

9. 发明授权

US08509042B2 Optical disc apparatus, focus control method and integrated circuit 有权
标题翻译：光盘装置，聚焦控制方法及集成电路
公开(公告)号：US08509042B2
公开(公告)日：2013-08-13
申请号：US12992983
申请日：2010-03-08
申请人： Takeshi Shimamoto , Takeharu Yamamoto , Takashi Kishimoto
发明人： Takeshi Shimamoto , Takeharu Yamamoto , Takashi Kishimoto
IPC分类号： G11B7/00
CPC分类号： G11B7/08511 , G11B7/13922 , G11B2007/0013
摘要： An optical disc apparatus has: a spherical aberration correction unit (7) which corrects the spherical aberration generated in a light spot on a recording layer; a control unit (52) which focuses a light beam on a predetermined recording layer, and shifts the focal point position of the light beam from the current recording layer to another recording layer; and a focus jump control unit (60) which controls correction of spherical aberration and shift of the focal point position based on the interlayer distance between the current recording layer and a recording layer which adjoins in a direction opposite to a direction of shifting the focal point position of the light beam. By this configuration, focus jump is stably executed.
摘要翻译：一种光盘装置具有：球面像差校正单元（7），其校正在记录层上的光斑中产生的球面像差; 控制单元（52），其将光束聚焦在预定记录层上，并将来自当前记录层的光束的焦点位置移动到另一个记录层; 以及焦点跳跃控制单元（60），其控制基于当前记录层与与移动焦点的方向相反的方向相邻的记录层之间的层间距离来调整球面像差和焦点位置的偏移的校正光束的位置。通过这种配置，稳定地执行聚焦跳转。

10. 发明申请

US20110075529A1 OPTICAL DISC APPARATUS, FOCUS CONTROL METHOD AND INTEGRATED CIRCUIT 有权
标题翻译：光盘设备，聚焦控制方法和集成电路
公开(公告)号：US20110075529A1
公开(公告)日：2011-03-31
申请号：US12992983
申请日：2010-03-08
申请人： Takeshi Shimamoto , Takeharu Yamamoto , Takashi Kishimoto
发明人： Takeshi Shimamoto , Takeharu Yamamoto , Takashi Kishimoto
IPC分类号： G11B7/00
CPC分类号： G11B7/08511 , G11B7/13922 , G11B2007/0013
摘要： An optical disc apparatus has: a spherical aberration correction unit (7) which corrects the spherical aberration generated in a light spot on a recording layer; a control unit (52) which focuses a light beam on a predetermined recording layer, and shifts the focal point position of the light beam from the current recording layer to another recording layer; and a focus jump control unit (60) which controls correction of spherical aberration and shift of the focal point position based on the interlayer distance between the current recording layer and a recording layer which adjoins in a direction opposite to a direction of shifting the focal point position of the light beam. By this configuration, focus jump is stably executed.
摘要翻译：一种光盘装置具有：球面像差校正单元（7），其校正在记录层上的光斑中产生的球面像差; 控制单元（52），其将光束聚焦在预定记录层上，并将来自当前记录层的光束的焦点位置移动到另一个记录层; 以及焦点跳跃控制单元（60），其控制基于当前记录层与与移动焦点的方向相反的方向相邻的记录层之间的层间距离来调整球面像差和焦点位置的偏移的校正光束的位置。通过这种配置，稳定地执行聚焦跳转。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式