公开(公告)号：US20090196138A1

公开(公告)日：2009-08-06

申请号：US12351226

申请日：2009-01-09

申请人： Nobuaki Kaji ,  Kazuo Watabe ,  Takashi Usui ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Masahiro Saito

发明人： Nobuaki Kaji ,  Kazuo Watabe ,  Takashi Usui ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Masahiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/00456 ,  G11B7/126

摘要： According to one embodiment, in one embodiment of the invention, a laser drive circuit is provided with a first current source, a second drive current source, and a third current source. The control section selectively obtains a plurality of laser light use mode of controlling the from first to third current sources to use pulse laser light accompanying relaxation oscillation, and a complex laser light use mode of using laser light where laser pulses are combined, whose starting end has an abrupt impulse change portion caused by relaxation oscillation and whose intermediate section is a flat portion with a fixed intensity.

摘要翻译： 根据一个实施例，在本发明的一个实施例中，激光驱动电路设置有第一电流源，第二驱动电流源和第三电流源。 控制部选择性地获得多个激光使用模式，其控制从第一至第三电流源使用伴随弛豫振荡的脉冲激光，以及复合激光使用模式，其中使用激光脉冲组合的激光，其起始端 具有由松弛振动引起的突然脉冲变化部分，其中间部分是具有固定强度的平坦部分。

公开(公告)号：US20090141760A1

公开(公告)日：2009-06-04

申请号：US12260824

申请日：2008-10-29

申请人： Masahiro Saito ,  Takashi Usui ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Nobuaki Kaji ,  Kazuto Kuroda

发明人： Masahiro Saito ,  Takashi Usui ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Nobuaki Kaji ,  Kazuto Kuroda

IPC分类号： H01S3/00

CPC分类号： G11B7/1263

摘要： According to one embodiment, a drive control apparatus of a semiconductor laser includes a driving circuit which drives the semiconductor laser by applying pulses transiting from bias current to peak current to the semiconductor laser as laser driving current that causes relaxation oscillation of emission light intensity of the semiconductor laser, and a control circuit which controls the bias current such that the bias current has a predetermined ratio limiting fluctuation of a leading peak value of the relaxation oscillation occurring for each application of pulses relative to threshold current of the semiconductor laser. The control circuit changes the bias current to maintain the predetermined ratio relative to fluctuation of the threshold current.

摘要翻译： 根据一个实施例，半导体激光器的驱动控制装置包括驱动电路，该驱动电路通过施加从偏置电流流向峰值电流的脉冲来驱动半导体激光器作为激光驱动电流，该激光驱动电流引起半导体激光器的发射光强度的弛豫振荡 半导体激光器和控制偏置电流的控制电路，使得偏置电流相对于半导体激光器的阈值电流具有针对每次施加脉冲而产生的弛豫振荡的引导峰值的预定比例限制波动。 控制电路改变偏置电流以相对于阈值电流的波动保持预定的比率。

公开(公告)号：US20090109809A1

公开(公告)日：2009-04-30

申请号：US12258359

申请日：2008-10-24

申请人： Kazuto Kuroda ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Nobuaki Kaji ,  Takashi Usui ,  Masahiro Saito

发明人： Kazuto Kuroda ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Nobuaki Kaji ,  Takashi Usui ,  Masahiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/1263 ,  G11B7/00456

摘要： According to one embodiment, a laser drive circuit includes a photodetector which receives part of laser light emitted from a laser element to a recording medium independently of reflection laser light reflected by the recording medium, and outputs an output corresponding to the strength thereof, an integration circuit which integrates the output from the photodetector for a predetermined time, and a setting circuit which sets the intensity of a laser drive current supplied to the laser element on the basis of the output from the integration circuit.

摘要翻译： 根据一个实施例，激光驱动电路包括光电检测器，其独立于由记录介质反射的反射激光，将从激光元件发射的激光的一部分接收到记录介质，并且输出与其强度对应的输出， 电路，其将来自光电检测器的输出积分预定时间;以及设置电路，其根据积分电路的输出设定提供给激光元件的激光驱动电流的强度。

公开(公告)号：US20090109816A1

公开(公告)日：2009-04-30

申请号：US12256365

申请日：2008-10-22

申请人： Takashi Usui ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

发明人： Takashi Usui ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/00456 ,  G11B7/1267

摘要： According to one embodiment, a calibration section controls an LD driving section so as to carry out test writing on a recording layer of an optical disc using a light pulse having relaxation oscillation, irradiates the test-written area with a reproduction laser beam so as to detect reflected light, and determine write strategy based on the detected result. A recording process is executed on the optical disc by using the light pulse having relaxation oscillation based on the write strategy determined by the calibration section.

摘要翻译： 根据一个实施例，校准部分控制LD驱动部分，以便使用具有弛豫振荡的光脉冲对光盘的记录层进行测试写入，用再现激光束照射测试写入区域，以便 检测反射光，并根据检测结果确定写入策略。 通过使用基于由校准部确定的写入策略的具有弛豫振荡的光脉冲在光盘上执行记录处理。

公开(公告)号：US20100246367A1

公开(公告)日：2010-09-30

申请号：US12720151

申请日：2010-03-09

申请人： Hideaki OKANO ,  Takashi Usui

发明人： Hideaki OKANO ,  Takashi Usui

IPC分类号： G11B7/00

CPC分类号： G11B7/083 ,  G03H1/16 ,  G03H1/265 ,  G11B7/0065 ,  G11B7/00781

摘要： An optical information recording method includes the following steps. A converting step is converting a light beam into an information beam carrying information by using a spatial beam modulator. A focusing step is focusing the information beam on an optical information recording medium including an information recording layer. An irradiating step is irradiating the optical information recording medium with a reference beam and the information beam so that the reference beam and the information beam intersect with each other on the information recording layer by using an optical component. A rotating step is rotating the optical information recording medium or the optical component by using a drive unit for performing angle-multiplex recording. A management information recording step is recording management information at two or more relative angles having an angle interval smaller than twice at least a first null angle.

摘要翻译： 光信息记录方法包括以下步骤。 A转换步骤是通过使用空间光束调制器将光束转换为携带信息的信息光束。 聚焦步骤将信息光束聚焦在包括信息记录层的光学信息记录介质上。 照射步骤是用参考光束和信息光束照射光学信息记录介质，使得参考光束和信息光束通过使用光学部件在信息记录层上彼此相交。 旋转步骤通过使用用于执行角度多路复用记录的驱动单元旋转光学信息记录介质或光学部件。 管理信息记录步骤是将角度间隔小于两倍至少第一空角的两个或多个相对角度记录管理信息。

公开(公告)号：US20060171277A1

公开(公告)日：2006-08-03

申请号：US11328264

申请日：2006-01-10

申请人： Takashi Usui ,  Yutaka Kashihara ,  Chosaku Noda ,  Akihito Ogawa

发明人： Takashi Usui ,  Yutaka Kashihara ,  Chosaku Noda ,  Akihito Ogawa

IPC分类号： G11B5/09 ,  G11B7/00

CPC分类号： G11B27/034 ,  G11B27/105 ,  G11B27/24 ,  G11B27/329

摘要： An attempt is made to make it possible to efficiently perform the finalizing process and closing process in a short period of time and securely manage the last address of a border-out. When the border closing or finalizing process is performed after user data is recorded, a padding process is performed for at least a discontinuous area in the data area and a border-out is lastly recorded in a first step. Then, in a second step, latest recording management data (RMD) is recorded in a recording management data duplication zone (RDZ) of a data lead-in area, latest recording management data (RMD) is recorded in an unrecorded area of a present recording management zone (RMZ) and R physical format information (R-PFI) is recorded in an R physical format information zone (R-PFIZ).

摘要翻译： 试图使得能够在短时间内有效地执行完成处理和结束处理，并且可以安全地管理边界的最后地址。 当在记录用户数据之后执行边界关闭或完成处理时，对数据区域中的至少不连续区域执行填充处理，并且在第一步骤中最后记录边界输出。 然后，在第二步骤中，最新的记录管理数据（RMD）被记录在数据导入区的记录管理数据复制区（RDZ）中，最新的记录管理数据（RMD）被记录在当前的未记录区 记录管理区（RMZ）和R物理格式信息（R-PFI）被记录在R物理格式信息区（R-PFIZ）中。

公开(公告)号：US20060171276A1

公开(公告)日：2006-08-03

申请号：US11328263

申请日：2006-01-10

申请人： Takashi Usui ,  Yutaka Kashihara ,  Chosaku Noda ,  Akihito Ogawa

发明人： Takashi Usui ,  Yutaka Kashihara ,  Chosaku Noda ,  Akihito Ogawa

IPC分类号： G11B5/09 ,  G11B7/00

CPC分类号： G11B7/00736 ,  G11B27/034 ,  G11B27/24

摘要： An attempt is made to make it possible to efficiently perform the finalizing process and closing process in a short period of time. When the border closing or finalizing process is performed after user data is recorded, latest recording management data (RMD) is recorded in a recording management data duplication zone (RDZ) of a data lead-in area, latest recording management data (RMD) is recorded in an unrecorded area of a present recording management zone (RMZ) and R physical format information (R-PFI) is recorded in an R physical format information zone (R-PFIZ) in a first step and a padding process is performed for at least a discontinuous area in the data area and a border-out is lastly recorded in a second step.

摘要翻译： 尝试使其能够在短时间内有效地执行最终处理和结束处理。 当在记录用户数据之后执行边界关闭或完成处理时，最新记录管理数据（RMD）被记录在数据导入区的记录管理数据复制区（RDZ）中，最新的记录管理数据（RMD）是 记录在当前记录管理区域（RMZ）的未记录区域中，并且R物理格式信息（R-PFI）被记录在R物理格式信息区域（R-PFIZ）中，并且执行填充处理 在第二步骤中最后记录数据区域中的不连续区域和边界输出。

公开(公告)号：US09057348B2

公开(公告)日：2015-06-16

申请号：US13256550

申请日：2009-03-17

申请人： Takashi Usui ,  Yoshinori Takeuchi ,  Takeyuki Yabuuchi

发明人： Takashi Usui ,  Yoshinori Takeuchi ,  Takeyuki Yabuuchi

IPC分类号： F02M69/46 ,  F02M55/04 ,  F02M59/44 ,  F04B53/00

CPC分类号： F02M55/04 ,  F02M59/44 ,  F02M2200/315 ,  F04B53/003

摘要： A pulsation damper mounted in a fuel chamber (23) of a high-pressure fuel pump (20) is provided with a diaphragm (11) having a flat section (11a) displaced when fuel pressure is applied thereto, a pump cover (10) for supporting the diaphragm (11), and a gas chamber (12) formed by the diaphragm (11) and the pump cover (10). Pressure pulsation occurring in the fuel chamber (23) is suppressed by displacement of the flat section (11a). The diaphragm (11) is formed in a closed-bottomed tubular shape with the flat section (11a) located at the bottom and has a projection (11b) provided to the periphery of the flat section (11a) and projecting to the side opposite to the pump cover (10). A tubular peripheral section extending from the outer periphery of the projection (11b) so as to be vertical to the flat section (11a) is fitted over the pump cover (10). The externally fitting portion of the tubular peripheral section is a joint section (11c) joined to the pump cover (10).

摘要翻译： 安装在高压燃料泵（20）的燃料室（23）中的脉动阻尼器设置有具有在施加燃料压力时偏移的平坦部分（11a）的隔膜（11），泵罩（10） 用于支撑隔膜（11）和由隔膜（11）和泵罩（10）形成的气室（12）。 通过平坦部分（11a）的位移来抑制在燃料室（23）中产生的压力脉动。 隔膜（11）形成为底部呈筒状的平坦部（11a）位于底部，并且具有设置在平坦部（11a）的周边的突起（11b），并突出于与 泵盖（10）。 从突出部（11b）的外周向与该平坦部（11a）垂直的管状周边部装配在泵罩（10）上。 管状周边部分的外部装配部分是与泵盖（10）接合的接合部分（11c）。

公开(公告)号：US20120207632A1

公开(公告)日：2012-08-16

申请号：US13503187

申请日：2010-10-12

申请人： Takashi Usui ,  Takeshi Kitamura ,  Hirokazu Yokoyama ,  Yoshihiro Tanaka

发明人： Takashi Usui ,  Takeshi Kitamura ,  Hirokazu Yokoyama ,  Yoshihiro Tanaka

IPC分类号： F04B23/00

CPC分类号： F04B39/1073 ,  F02M59/366 ,  F02M59/462 ,  F02M59/464 ,  F02M59/466 ,  F02M63/005 ,  F02M63/0265 ,  F04B1/0465 ,  F04B7/0076 ,  F04B53/1037 ,  F16K15/16 ,  F16K15/185

摘要： In a fuel pump that includes a pump housing (10) that has fuel passages (11a, 11b), a plunger (17) that is movably housed in the pump housing (10), a fuel pressurizing chamber (15) that is formed in the pump housing (10) and draws in fuel via one of the fuel passages (11a) that is on the intake side of the fuel pressurizing chamber (15), pressurizes the fuel that has been drawn in, and discharges the pressurized fuel via the other fuel passage (11b) that is on the discharge side of the fuel pressure chamber (15), in response to movement of the plunger (17), and valve elements (12, 14, 16) that are arranged in the fuel passages (11a, 11b) near the fuel pressurizing chamber (15), each of the valve elements (12, 14, 16) has a reed valve body (41, 42, 43; 74, 75, 76) arranged in the fuel passage (11a) on the intake side of the fuel pressurizing chamber (15) or the fuel passage (11b) on the discharge side of the fuel pressurizing chamber (15); and an operating member (21) that applies operating force in at least one of a valve opening direction or a valve closing direction to the reed valve body (41, 42, 43; 74, 75, 76) is provided in the pump housing (10).

摘要翻译： 在包括具有燃料通路（11a，11b）的泵壳体（10）的燃料泵，可移动地容纳在所述泵壳体（10）中的柱塞（17）的燃料加压室（15）中形成的燃料加压室 所述泵壳体（10）通过所述燃料加压室（15）的进气侧的燃料通路（11a）中的一个吸入燃料，对被吸入的燃料加压，并且经由所述燃料加压室 响应于柱塞（17）的移动而位于燃料压力室（15）的排出侧的其它燃料通道（11b）和布置在燃料通道（12）中的阀元件（12,14,16） 11a，11b），每个阀元件（12,14,16）具有布置在燃料通道（11a）中的筘阀体（41,42,43; 74,75,76） ）在燃料加压室（15）的进气侧或燃料加压室（15）的排出侧的燃料通路（11b）上。 并且在所述泵壳体（41,42,43,74,77,76）中设置有向所述簧片阀体（41,42,43; 74,75,76）的阀打开方向或阀关闭方向中的至少一个施加作用力的操作构件（21） 10）。

公开(公告)号：US08090050B2

公开(公告)日：2012-01-03

申请号：US12426750

申请日：2009-04-20

申请人： Mitsuhiro Suzuki ,  Chihiro Fujita ,  Takashi Usui

发明人： Mitsuhiro Suzuki ,  Chihiro Fujita ,  Takashi Usui

IPC分类号： H04K1/02 ,  H04L25/03 ,  H04L25/49

CPC分类号： H04L27/2605

摘要： Multi-carrier transmission is performed without inserting a repetitive signal into guard interval periods. A transmitter provides guard interval periods by using a null signal to save transmission power and prevent the deterioration of the SN ratio. Delayed waves at the head of each received symbol cause high-frequency waves to occur and carriers to interfere with one another. Accordingly, a receiver adds a component following each received symbol to a delayed-wave component at the head of the received symbol. As a result, the delayed-wave component at the head of the received symbol and the added component become continuous in wave form and subcarriers do not interfere with each other.

摘要翻译： 执行多载波传输而不将重复信号插入保护间隔周期。 发射机通过使用空信号来节省传输功率并防止SN比的恶化来提供保护间隔周期。 每个接收到的符号的头部的延迟波导致高频波发生，并且载波彼此干扰。 因此，接收机将接收到的符号之后的分量添加到接收符号的头部的延迟波分量。 结果，接收符号的头部的延迟波分量和相加分量在波形上变得连续，并且子载波不彼此干扰。