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71. 发明申请

US20050105569A1 Laser control unit, laser control circuit, and laser-power adjustment method 失效
标题翻译：激光控制单元，激光控制电路和激光功率调节方法
公开(公告)号：US20050105569A1
公开(公告)日：2005-05-19
申请号：US10986959
申请日：2004-11-15
申请人： Hisashi Senga , Toshio Matsumoto , Hiromichi Ishibashi
发明人： Hisashi Senga , Toshio Matsumoto , Hiromichi Ishibashi
IPC分类号： G11B7/125 , H01S3/13 , H01S5/042
CPC分类号： G11B7/126 , G11B7/1267 , H01S5/042
摘要： A laser control unit, a laser control circuit and a laser-power adjustment method are provided which are capable of controlling laser power precisely, even if an error is produced in the duty of an optical pulse. A light-receiving element 101 converts the optical pulse into an electric signal and outputs a photo-detection signal; an LPF 114 calculates the average value of the optical pulse, based on the photo-detection signal; a DSP 124 calculates a light-emission power value, based on the average value of the optical pulse and the duty of the optical pulse, and calculates the difference between the light-emission power value and a target power value; an EP-ROM 160 stores a correction value for correcting a calculation which is executed by the DSP 124; the DSP 124 corrects the calculation, based on the correction value, and controls an electric-current value which is supplied to a semiconductor laser 150, based on the calculation result which is obtained from the correction; and a laser drive circuit 40 drives the semiconductor laser 150, based on the electric-current value.
摘要翻译：提供激光控制单元，激光控制电路和激光功率调节方法，即使在光脉冲的占空比中产生误差，也能够精确地控制激光功率。光接收元件101将光脉冲转换为电信号并输出光检测信号; LPF114基于光检测信号计算光脉冲的平均值; DSP 124基于光脉冲的平均值和光脉冲的占空比来计算发光功率值，并计算发光功率值和目标功率值之间的差; EP-ROM 160存储用于校正由DSP 124执行的计算的校正值; DSP 124基于校正值来校正计算，并且基于从校正获得的计算结果来控制提供给半导体激光器150的电流值; 并且激光驱动电路40基于电流值驱动半导体激光器150。

72. 发明授权

US06829208B1 Optical disk reproducing method and reproducing device 失效
标题翻译：光盘再现方法和再现装置
公开(公告)号：US06829208B1
公开(公告)日：2004-12-07
申请号：US10049683
申请日：2002-02-15
申请人： Shigeru Furumiya , Ryutaro Futakuchi , Hiromichi Ishibashi
发明人： Shigeru Furumiya , Ryutaro Futakuchi , Hiromichi Ishibashi
IPC分类号： G11B7005
CPC分类号： G11B20/10009 , G11B7/005
摘要： The reproduction method includes steps of: performing an addition operation on a detection signal obtained by the first light-detecting element group and a detection signal obtained by the second light-detecting element group so as to generate a summation signal and outputting the summation signal to a signal processing section; performing a difference operation on a detection signal obtained by the first light-detecting element group and a detection signal obtained by the second light-detecting element group so as to generate a differential signal and outputting the differential signal to the signal processing section; digitalizing the summation signal so as to generate a binary signal, and generating a binary signal edge pulse; when an amplitude which is equal to or greater than a predetermined value of the differential signal is detected, outputting the binary signal edge pulse as a reproduction edge pulse from the signal processing section; and generating the reproduction data.
摘要翻译：再现方法包括以下步骤：对由第一光检测元件组获得的检测信号和由第二光检测元件组获得的检测信号执行相加操作，以产生求和信号并将求和信号输出到信号处理部; 对由第一光检测元件组获得的检测信号和由第二光检测元件组获得的检测信号执行差分运算，以产生差分信号，并将该差分信号输出到信号处理部分; 数字化求和信号以产生二进制信号，并产生二进制信号边沿脉冲; 当检测到等于或大于差分信号的预定值的幅度时，从信号处理部分输出二进制信号边缘脉冲作为再现边缘脉冲; 并产生再现数据。

73. 发明授权

US06661769B2 Optical storage medium, a tilt detection apparatus, and a data recording and reproducing apparatus 失效
公开(公告)号：US06661769B2
公开(公告)日：2003-12-09
申请号：US09964725
申请日：2001-09-28
申请人： Shin-ichi Kadowaki , Kousei Sano , Hiromichi Ishibashi , Shigeru Furumiya
发明人： Shin-ichi Kadowaki , Kousei Sano , Hiromichi Ishibashi , Shigeru Furumiya
IPC分类号： G11B700
CPC分类号： G11B7/0956 , G11B7/007 , G11B7/0938
摘要： Tilt of an optical storage medium is stably detected even when then the guide groove pitch is reduced and recording capacity is increased. On a disk with continuous grooves of a pitch Gp, part of tracks Gn−1 and Gn+1 adjacent to opposite sides of an n-th track Gn is eliminated, forming an area where the groove pitch is equivalent to 2·Gp. A push-pull signal from the area of groove pitch Gp and a push-pull signal from the area of groove pitch 2·Gp are differentiated to obtain a tilt error signal. Tilt can therefore be detected even when groove pitch Gp is reduced and storage capacity is increased, and a highly reliable data recording and reproducing apparatus can be provided at low cost.

74. 发明授权

US06356522B1 Optical disk drive 失效
标题翻译：光盘驱动器
公开(公告)号：US06356522B1
公开(公告)日：2002-03-12
申请号：US09406796
申请日：1999-09-28
申请人： Takeharu Yamamoto , Katsuya Watanabe , Mitsuro Moriya , Hiromichi Ishibashi , Takashi Kishimoto
发明人： Takeharu Yamamoto , Katsuya Watanabe , Mitsuro Moriya , Hiromichi Ishibashi , Takashi Kishimoto
IPC分类号： G11B700
CPC分类号： G11B27/24 , G11B7/0037 , G11B7/08517 , G11B2220/216 , G11B2220/218 , G11B2220/2562 , G11B2220/2575
摘要： In performing CLV readout, a target frequency is corrected based on current and target numbers of revolutions of a disk motor during a seek operation, thereby controlling the frequency of a read clock signal at a value approximately equal to the corrected target frequency. In performing CAV readout on the other hand, the frequency of the read clock signal is approximately equalized with a data read frequency at a seek destination. By performing these frequency control operations, data reading can be started quickly enough after the seek operation is finished. In reading out information from a recordable disk with wobbling tracks on a data portion, frequency control is performed using a wobble signal with respect to an unrecorded data portion, and phase locking control is performed using a data signal with respect to an address portion. In this manner, an address can be read out constantly.
摘要翻译：在执行CLV读出时，基于搜索操作期间的盘式电动机的转数的当前和目标数来校正目标频率，从而将读取时钟信号的频率控制在大致等于校正的目标频率的值。另一方面，在执行CAV读出时，读取时钟信号的频率近似地与搜索目的地的数据读取频率相等。通过执行这些频率控制操作，可以在搜索操作完成之后足够快地开始数据读取。在从数据部分的摆动磁迹的可记录磁盘中读出信息时，使用相对于未记录数据部分的摆动信号进行频率控制，并且使用相对于地址部分的数据信号执行相位锁定控制。以这种方式，可以不断地读出地址。

75. 发明授权

US06330213B1 Optical disk drive apparatus 失效
标题翻译：光盘驱动装置
公开(公告)号：US06330213B1
公开(公告)日：2001-12-11
申请号：US09566126
申请日：2000-05-05
申请人： Hiromichi Ishibashi , Takeharu Yamamoto
发明人： Hiromichi Ishibashi , Takeharu Yamamoto
IPC分类号： G11B509
CPC分类号： G11B7/005 , G11B7/0901 , G11B7/094 , G11B20/1403
摘要： An optical disk drive apparatus drives an optical disk at a constant angular velocity (CAV). The optical disk is formatted under constant linear velocity (CLV). The phase error changes linearly from the inner most track to the outer most track. Tack pulse counter is provided to detect the radial position of the optical head on the optical disk. Calculators are provided to correct the phase error according to the radial position of the optical head.
摘要翻译：光盘驱动装置以恒定的角速度（CAV）驱动光盘。光盘在恒定线速度（CLV）下进行格式化。相位误差从最内侧轨道线性变化到最外侧轨道。提供粘性脉冲计数器以检测光学头在光盘上的径向位置。提供计算器以根据光学头的径向位置校正相位误差。

76. 发明授权

US6134197A Optical disk drive apparatus 失效
标题翻译：光盘驱动装置
公开(公告)号：US6134197A
公开(公告)日：2000-10-17
申请号：US58886
申请日：1998-04-13
申请人： Hiromichi Ishibashi , Takeharu Yamamoto
发明人： Hiromichi Ishibashi , Takeharu Yamamoto
IPC分类号： G11B7/005 , G11B7/09 , G11B20/14 , G11B7/00
CPC分类号： G11B7/005 , G11B7/094 , G11B20/1403 , G11B7/0901
摘要： An optical disk drive apparatus drives an optical disk at a constant angular velocity (CAV). The optical disk is formatted under constant linear velocity (CLV). The phase error changes linearly from the inner most track to the outer most track. Tack pulse counter is provided to detect the radial position of the optical head on the optical disk. Calculators are provided to correct the phase error according to the radial position of the optical head.
摘要翻译：光盘驱动装置以恒定角速度（CAV）驱动光盘。光盘在恒定线速度（CLV）下进行格式化。相位误差从最内侧轨道线性变化到最外侧轨道。提供粘性脉冲计数器以检测光学头在光盘上的径向位置。提供计算器以根据光学头的径向位置校正相位误差。

77. 发明授权

US5886962A Tilt control apparatus with tilt target value based on bit error rate signal 失效
标题翻译：倾斜控制装置，具有基于误码率信号的倾斜目标值
公开(公告)号：US5886962A
公开(公告)日：1999-03-23
申请号：US18637
申请日：1998-02-04
申请人： Kouichi Takamine , Yasuaki Edahiro , Hiromichi Ishibashi , Mitsurou Moriya
发明人： Kouichi Takamine , Yasuaki Edahiro , Hiromichi Ishibashi , Mitsurou Moriya
IPC分类号： G11B7/095
CPC分类号： G11B7/0956
摘要： The tilt control apparatus of the invention controls to minimize an error in an orthogonal relationship between an optical disk and an optical axis of a light beam irradiated onto the optical disk. The tilt control apparatus includes: an optical pickup for irradiating the light beam onto the optical disk, thereby reproducing information recorded on the optical disk; an orthogonality error detector for outputting an orthogonality error signal corresponding to the error in the orthogonal relationship between the optical disk and the optical axis; a tilting mechanism for tilting the optical axis; a tilt controller for controlling such that the optical disk falls at right angles with the optical axis by driving the tilting mechanism in response to the orthogonality error signal; a pulse width variation detector for outputting a pulse width variation signal corresponding to a variation in a pulse width of an information reproduced signal obtained from the optical pickup; and a target value variable circuit for varying a control target value of the tilt controller based on the pulse width variation signal.
摘要翻译：本发明的倾斜控制装置控制使光盘与照射在光盘上的光束的光轴之间的正交关系中的误差最小化。倾斜控制装置包括：用于将光束照射到光盘上的光学拾取器，从而再现记录在光盘上的信息; 用于输出与光盘与光轴之间的正交关系中的误差相对应的正交性误差信号的正交误差检测器; 倾斜机构，用于倾斜光轴; 倾斜控制器，用于通过响应于正交性误差信号驱动倾斜机构来控制光盘与光轴成直角; 脉冲宽度变化检测器，用于输出与从光学拾取器获得的信息再现信号的脉冲宽度的变化相对应的脉冲宽度变化信号; 以及目标值可变电路，用于根据脉冲宽度变化信号改变倾斜控制器的控制目标值。

78. 发明授权

US5808979A Tracking error signal detector 失效
标题翻译：跟踪误差信号检测器
公开(公告)号：US5808979A
公开(公告)日：1998-09-15
申请号：US561920
申请日：1995-11-22
申请人： Hiromichi Ishibashi , Osamu Yamaguchi , Yoshihiro Kanda
发明人： Hiromichi Ishibashi , Osamu Yamaguchi , Yoshihiro Kanda
IPC分类号： G11B7/09 , G11B7/00
CPC分类号： G11B7/0901 , G11B7/0941
摘要： An apparatus for outputting a tracking error signal based on the time change in the intensity distribution of a laser beam diffracted by the data pits is provided for an optical reproduction system using an optical record carrier on which data is recorded with a high recording density. The photodetector is divided orthogonally into four parts, and boost filters having identical characteristics are disposed for the output signal of one pair of diagonally located photodetector elements and for the output signal of the other pair of diagonally located photodetector elements. The detection gain of the short mark reproduction signal can thus be increased above the detection gain of the long mark reproduction signal to prevent the loss of short marks and improve the S/N ratio of the tracking error signal.
摘要翻译：提供一种用于基于由数据坑衍射的激光束的强度分布的时间变化来输出跟踪误差信号的装置，其用于使用其上以高记录密度记录数据的光学记录载体的光学再现系统。光电检测器正交分为四部分，并且具有相同特性的升压滤波器被设置用于一对对角位置的光检测器元件的输出信号和另一对对角位置的光检测器元件的输出信号。因此，短标记再现信号的检测增益可以增加到长标记再现信号的检测增益以上，以防止短标记的损失并提高跟踪误差信号的S / N比。

79. 发明授权

US08050172B2 Optical disc on which information is written on a block-by-block basis 有权
标题翻译：以块为单位写入信息的光盘
公开(公告)号：US08050172B2
公开(公告)日：2011-11-01
申请号：US12327891
申请日：2008-12-04
申请人： Junichi Minamino , Atsushi Nakamura , Shigeru Furumiya , Hiromichi Ishibashi , Takashi Ishida , Toyoji Gushima
发明人： Junichi Minamino , Atsushi Nakamura , Shigeru Furumiya , Hiromichi Ishibashi , Takashi Ishida , Toyoji Gushima
IPC分类号： G11B7/24
CPC分类号： G11B27/3027 , G11B7/0053 , G11B7/007 , G11B7/00745 , G11B7/24082 , G11B20/00086 , G11B20/00405 , G11B20/00492 , G11B20/10009 , G11B20/1217 , G11B20/1833 , G11B27/19 , G11B27/24 , G11B2020/1221 , G11B2020/1239 , G11B2020/1265 , G11B2020/1268 , G11B2020/1274 , G11B2020/1287 , G11B2020/1292 , G11B2020/1298 , G11B2220/216 , G11B2220/218 , G11B2220/2537 , G11B2220/2541
摘要： A method for writing a signal on an optical disk is disclosed. The optical disk comprises a track groove on a recording surface thereof, on which information is recorded along the track groove on a block-by-block basis each said block having a predetermined length and where an identification mark indicating the beginning of each said block, has been formed on the track groove. Writing is started before the identification mark, located at the beginning of at least one block on which the signal should be written, is reached and writing is ended after the identification mark located at the end of the at least one block on which the signal should be written has been passed.
摘要翻译：公开了一种在光盘上写入信号的方法。光盘包括在其记录表面上的轨道凹槽，其上沿着轨道凹槽记录信息，每个块具有预定长度，并且其中指示每个所述块的开始的识别标记，已经形成在轨道槽上。在位于要写入信号的至少一个块的开始处的识别标记之前开始写入，并且在位于信号所在的至少一个块的末尾的识别标记之后结束写入被书面通过。

80. 发明授权

US07986597B2 PLL control device and reproduction apparatus with linking portion control 有权
标题翻译： PLL控制装置和具有连接部分控制的再现装置
公开(公告)号：US07986597B2
公开(公告)日：2011-07-26
申请号：US12818188
申请日：2010-06-18
申请人： Toyoji Gushima , Shigeru Furumiya , Takashi Ishida , Hiromichi Ishibashi , Hironori Deguchi , Atsushi Nakamura , Junichi Minamino , Makoto Usui , Takeshi Nakajima
发明人： Toyoji Gushima , Shigeru Furumiya , Takashi Ishida , Hiromichi Ishibashi , Hironori Deguchi , Atsushi Nakamura , Junichi Minamino , Makoto Usui , Takeshi Nakajima
IPC分类号： G11B7/00
CPC分类号： G11B20/1833 , G11B7/00454 , G11B7/00456 , G11B7/00736 , G11B7/00745 , G11B20/10 , G11B20/10203 , G11B20/1217 , G11B20/1403 , G11B20/1426 , G11B27/3027 , G11B2007/0006 , G11B2020/1222 , G11B2020/1225 , G11B2020/1232 , G11B2020/1277 , G11B2020/1287 , G11B2220/20 , G11B2220/216 , G11B2220/2537 , G11B2220/2562
摘要： A recording medium comprising a recording area, the recording area includes a first area and a second area, the first area includes a frame area, the frame area includes an area in which a second synchronization code sequence and at least a portion of data are to be recorded, and the second area includes an area in which a third synchronization code sequence and a fourth synchronization code sequence are to be recorded.
摘要翻译：一种包括记录区域的记录介质，所述记录区域包括第一区域和第二区域，所述第一区域包括帧区域，所述帧区域包括第二同步码序列和至少一部分数据到的区域并且第二区域包括要记录第三同步码序列和第四同步码序列的区域。

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