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公开(公告)号：US4837757A
公开(公告)日：1989-06-06
申请号：US891257
申请日：1986-07-28
Applicant: Hiroo Okada , Yoshiaki Ikeda , Ken Ohsima
Inventor： Hiroo Okada , Yoshiaki Ikeda , Ken Ohsima
CPC classification number: G11B7/08517 , G11B7/08529 , G11B7/08588 , G11B7/0946
Abstract: An optical pickup is provided below an optical disk. A laser beam is emitted from a semiconductor laser onto a track, through an objective lens. The objective lens is capable of shifting, and is shifted in the direction of the track width by a magnetic force from a tracking actuator, thereby performing lens tracking. The optical pickup is mounted on a carriage. The carriage is shifted along the radial direction of the optical disk by a voice coil motor. This shifts the laser beam along the radial direction of the optical disk, thereby performing track access. Upon reception of an access command, a velocity control mode commences, and the shift velocity of the carriage is controlled in accordance with a velocity control signal corresponding to the distance between a target track and a current track. When the pickup arrives near the target track, the generation of velocity control signal ceases and the location control mode commences. When the carriage is deviated from the target track, its servo is adjusted in accordance with its deviation, by a location control signal. During velocity control of the carriage, a lens damping signal corresponding to the velocity control signal is supplied to the objective lens. After location control of the carriage commences, the lens damping signal corresponding to a location cotnrol signal is supplied to the objective lens until the velocity of the carriage falls below a predetermined value.
Abstract translation: 在光盘下面设置光拾取器。 激光束通过物镜从半导体激光器发射到轨道上。 物镜能够移动，并且通过来自跟踪致动器的磁力在轨道宽度的方向上移动，从而进行透镜跟踪。 光学拾取器安装在滑架上。 滑架通过音圈马达沿着光盘的径向方向移动。 这样沿着光盘的径向移动激光束，从而进行轨道通路。 在接收到访问命令时，开始速度控制模式，并且根据对应于目标轨道和当前轨道之间的距离的速度控制信号来控制滑架的移动速度。 当拾音器到达目标轨道附近时，速度控制信号的产生停止，位置控制模式开始。 当滑架偏离目标轨道时，其伺服根据其偏差根据位置控制信号进行调节。 在滑架的速度控制期间，将对应于速度控制信号的透镜阻尼信号提供给物镜。 在开始滑架的定位控制之后，将对应于位置辅助信号的镜头阻尼信号提供给物镜，直到滑架的速度降到预定值以下。
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公开(公告)号：US4102786A
公开(公告)日：1978-07-25
申请号：US762280
申请日：1977-01-25
Applicant: Hiroo Okada , Moriyuki Hirota , Masaaki Uesugi
Inventor： Hiroo Okada , Moriyuki Hirota , Masaaki Uesugi
CPC classification number: B01D24/007
Abstract: Disclosed herein is a method for cleaning a filter device packed with a bed of filtering grains, which cleaning is effected whenever the pressure loss in the filter device has increased to a prescribed level by first discharging the filtering grains through the upper side of the device in conjunction with a current of water, then circulating the filtering grains back into the device via the lower side thereof and giving the freshly formed bed of filtering grains a backwashing with water.
Abstract translation: 本文公开了一种用于清洗装有过滤颗粒床的过滤器装置的方法，每当过滤装置中的压力损失增加到规定水平时，首先通过装置的上侧排出过滤颗粒， 与水流结合，然后通过其下侧使过滤颗粒循环回设备，并将新形成的过滤颗粒床与水反洗。
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公开(公告)号：US4819220A
公开(公告)日：1989-04-04
申请号：US95200
申请日：1987-09-11
Applicant: Tasuhiro Miyazaki , Hiroo Okada , Toshio Tsurukawa , Shohei Kobayashi
Inventor： Tasuhiro Miyazaki , Hiroo Okada , Toshio Tsurukawa , Shohei Kobayashi
CPC classification number: G11B7/09
Abstract: A means receiving a light returning from an optical recording medium and detecting the beam distribution in the tangential direction of the track of the recording medium is provided. The offset of at least one controlling signal of a focusing controlling signal and tracking controlling signal is eliminated by the output signal of this beam distribution detecting means.
Abstract translation: 一种装置，用于接收从光学记录介质返回的光并检测记录介质的轨道的切线方向上的光束分布。 通过该光束分布检测装置的输出信号消除聚焦控制信号和跟踪控制信号的至少一个控制信号的偏移。
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公开(公告)号：US4761773A
公开(公告)日：1988-08-02
申请号：US840928
申请日：1986-03-18
Applicant: Hiroo Okada , Yoshiaki Ikeda , Makie Morota
Inventor： Hiroo Okada , Yoshiaki Ikeda , Makie Morota
CPC classification number: G11B7/08505 , G11B7/08517
Abstract: An optical pickup is arranged under an optical disk. Tracks of the disk are irradiated with a laser beam from the pickup. A beam reflected by a given track becomes incident on the pickup. A tracking error signal from the pickup is supplied to a lens moving actuator through a gain phase compensating circuit and a lens driving circuit, and an objective lens in the pickup is radially moved along disk. The tracking error signal is supplied to a voice coil motor through the phase compensating circuit. A carriage carrying the pickup thereon can be radially moved along the disk. When a tracking instruction is generated, the lens driving circuit drives the objective lens to start tracking. Meanwhile, the low-frequency components of the tracking error signal which are lower than the resonance frequency of the lens tracking circuit are amplified by the gain phase compensating circuit. When the tracking error signal is converged within a predetermined threshold range, the amplification of the low-frequency components of the tracking error signal is stopped. At the same time, the operation of the voice coil motor is started. Tracking is performed by both the objective lens and the carriage to achieve two-step servo tracking.
Abstract translation: 光拾取器设置在光盘下方。 使用来自拾取器的激光束照射盘的轨道。 由给定轨道反射的光束入射到拾取器上。 来自拾取器的跟踪误差信号通过增益相位补偿电路和透镜驱动电路提供给透镜移动致动器，并且拾取器中的物镜沿着盘径向移动。 跟踪误差信号通过相位补偿电路提供给音圈电机。 承载拾取器的托架可以沿着盘径向移动。 当产生跟踪指令时，透镜驱动电路驱动物镜开始跟踪。 同时，跟踪误差信号的低于镜头跟踪电路的谐振频率的低频分量被增益相位补偿电路放大。 当跟踪误差信号收敛在预定阈值范围内时，停止跟踪误差信号的低频分量的放大。 同时，启动音圈马达的动作。 通过物镜和托架进行跟踪，以实现两步伺服跟踪。
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5.发明授权Optical memory accessing and tracking apparatus with pickup and lens servoing during tracking 失效光学存储器访问和跟踪装置，在跟踪期间具有拾取和镜头伺服
公开(公告)号：US4785439A
公开(公告)日：1988-11-15
申请号：US834937
申请日：1986-02-28
Applicant: Hiroo Okada , Yoshiaki Ikeda , Ken Ohshima
Inventor： Hiroo Okada , Yoshiaki Ikeda , Ken Ohshima
CPC classification number: G11B7/08505 , G11B7/0901
Abstract: An optical recording/reproducing apparatus includes a pickup with a laser light source, an objective lens and lens drive coil for moving the optical axis of the laser beam transmitted through objective lens, a carriage drive voice-coil motor for moving a carriage with the pickup mounted thereon to move the laser beam transmitted through the objective lens, and tracking apparatus for operating both the lens drive coil and the carriage drive voice-coil motor. The tracking apparatus includes a lens servo stable detecting device for detecting that the laser beam from the objective lens has reached a desired track, apparatus for turning on a servo control loop with the lens drive coil in response to a tracking instruction, and apparatus for turning on a servo control loop with the carriage drive voice-coil motor in response to a detection output from the lens servo stable detecting device.
Abstract translation: 一种光学记录/再现装置，包括具有激光源的拾取器，用于移动通过物镜透射的激光束的光轴的物镜和透镜驱动线圈，用于使拾取器移动托架的托架驱动音圈马达 安装在其上以移动通过物镜透射的激光束，以及用于操作透镜驱动线圈和托架驱动音圈电动机的跟踪装置。 跟踪装置包括：透镜伺服稳定检测装置，用于检测来自物镜的激光束已经到达期望的轨道，用于响应于跟踪指令而使透镜驱动线圈接通伺服控制环的装置，以及用于转动的装置 响应于来自镜头伺服稳定检测装置的检测输出，在与托架驱动音圈马达的伺服控制回路上。
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公开(公告)号：US4644514A
公开(公告)日：1987-02-17
申请号：US609849
申请日：1984-05-14
Applicant: Ken Ohshima , Hiroo Okada , Masaharu Sakamoto
Inventor： Ken Ohshima , Hiroo Okada , Masaharu Sakamoto
CPC classification number: G11B21/083 , G11B21/085 , G11B7/08588
Abstract: A head drive control apparatus has a head and a scale reader. When the head is moved by a head drive mechanism, the scale reader detects the marks on a scale and converts them into a scale signal. In a speed control mode, the scale signal is compared with a target signal by an access signal generator, which produces an access signal representing the difference between the compared signals. The head is moved in accordance with the access signal until the scale signal becomes identical with the target signal. When these signals become equal, the speed control mode is switched to a position control mode. In the position control mode, a scale signal generator, a pulse generator, an up/down counter, a D/A converter, an adder and an interpolator convert the scale signal into an analog signal which represents the position of the head. The analog signal is compared with a position designating signal by a differential amplifier. The head is moved in accordance with the output signal of this amplifier.
Abstract translation: 头驱动控制装置具有头和刻度读取器。 当头部由头驱动机构移动时，刻度读取器检测刻度上的标记并将其转换成刻度信号。 在速度控制模式中，通过存取信号发生器将刻度信号与目标信号进行比较，其产生表示比较信号之间的差的存取信号。 根据访问信号移动头，直到缩放信号变得与目标信号相同。 当这些信号变得相等时，速度控制模式被切换到位置控制模式。 在位置控制模式中，刻度信号发生器，脉冲发生器，上/下计数器，D / A转换器，加法器和内插器将标尺信号转换成表示头部位置的模拟信号。 模拟信号通过差分放大器与位置指示信号进行比较。 根据该放大器的输出信号移动磁头。
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公开(公告)号：US4460033A
公开(公告)日：1984-07-17
申请号：US280550
申请日：1981-07-02
Applicant: Osamu Tsubakihara , Koji Kagaya , Hiroo Okada , Katsuhiro Kawashima
Inventor： Osamu Tsubakihara , Koji Kagaya , Hiroo Okada , Katsuhiro Kawashima
CPC classification number: B22D11/225 , B22D11/207
Abstract: In a method for continuous casting of steel, a slab having good quality is obtained by inspecting the profile of the unsolidified region of the slab in the transverse direction thereof during casting and controlling the cooling pattern so that the profile matches a pre-determined standard profile.
Abstract translation: 在连续铸造钢的方法中，通过在铸造期间检查板坯的未固化区域的横向方向的轮廓并控制冷却模式，使得型材匹配预定的标准型材 。
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公开(公告)号：US4186089A
公开(公告)日：1980-01-29
申请号：US905939
申请日：1978-05-15
Applicant: Hiroo Okada
Inventor： Hiroo Okada
CPC classification number: B01D37/03 , B01D33/275 , C02F11/12 , C02F11/121
Abstract: Within a chamber having an inlet for admitting a sludgy substance for dewatering and an outlet for discharging the dewatered cake of the sludgy substance, there are disposed two laterally opposed filtration trains each consisting of a plurality of rotary filter elements which are each formed of a multiplicity of circular plates arranged face to face in the axial direction at fixed intervals and which are so disposed that they intermesh so as to permit the circular plates of each rotary filter element to partially enter the corresponding spaces between the circular plates of the adjacent rotary filter elements. The two trains of rotary filter elements are disposed opposite each other so that when a sludgy substance is introduced through the inlet and is then caused to advance through the passage intervening between the two opposed trains of rotary filter elements toward the outlet, it is gradually freed from the water component by virtue of the spaces formed in the enmeshed portions of the multiplicity of circular plates of the rotary filter elements arranged as described above, with the result that the dewatered cake of the sludgy substance is concentrated to a gradually higher degree.
Abstract translation: 在具有用于允许用于脱水的淤泥物质的入口和用于排出淤泥物质的脱水饼的出口的室内，设置两个横向相对的过滤火车，每个过滤列由多个旋转过滤元件组成，每个旋转过滤元件由多个 的圆板，其以固定的间隔在轴向方向上面对面地布置，并且它们被布置成使得它们相互啮合，以便允许每个旋转过滤元件的圆形板部分地进入相邻旋转过滤器元件的圆形板之间的相应空间 。 旋转过滤器元件的两列是相互相对设置的，使得当通过入口引入污泥物质并且然后通过介于两个相对的旋转过滤元件列之间的通道朝向出口延伸时，它逐渐地被释放 通过在如上所述布置的旋转过滤器元件的多个圆形板的嵌合部分中形成的空间从水分中获得，结果是淤泥物质的脱水饼被逐渐集中。
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9.发明授权Optical beam tracking system for use in optical information recording and/or reproducing apparatus 失效用于光信息记录和/或再现装置的光束跟踪系统
公开(公告)号：US4718051A
公开(公告)日：1988-01-05
申请号：US686218
申请日：1984-12-26
Applicant: Ken Ohshima , Jun Sakashita , Hiroo Okada
Inventor： Ken Ohshima , Jun Sakashita , Hiroo Okada
CPC classification number: G11B7/0953
Abstract: A beam tracking system is used in an optical information recording and/or reproducing apparatus to optically track a record medium track. An objective lens irradiates an optical beam onto the record medium and is driven by a lens actuator to sweep the optical beam in a coarse mode relative to a predetermined track of the record medium. A carriage moves relative to the record medium for carrying the objective lens thereon and is driven by a carriage actuator to sweep the optical beam in a fine mode relative to the track. A detector detects the reflected optical beam during the sweep of the optical beam to produce a tracking signal representative of the deviation of the optical beam from the track. A pair of control circuits are connected to control the lens and carriage actuators respectively to effect the alignment of the optical beam with the track according to the tracking signal. A timing circuit is coneected to enable operation of the control circuit which controls the lens actuator and to inhibit operation of the other control circuit which controls the carriage actuator for a certain interval to effect alignment of the optical beam solely by means of the lens actuator, and thereafter to enable the other control circuit to maintain the optical beam alignment by means of the cooperative action of the lens and carriage actuators.
Abstract translation: 在光学信息记录和/或再现装置中使用光束跟踪系统来光学地跟踪记录介质轨迹。 物镜将光束照射到记录介质上并由透镜致动器驱动，以相对于记录介质的预定轨迹以粗略模式扫描光束。 托架相对于记录介质移动以在其上携带物镜，并且由托架致动器驱动以相对于轨道以精细模式扫掠光束。 检测器在扫描光束期间检测反射的光束，以产生代表光束偏离轨道的偏差的跟踪信号。 连接一对控制电路以分别控制透镜和滑架致动器，以根据跟踪信号实现光束与轨迹的对准。 定时电路是圆锥形的，以使控制电路的操作能够控制透镜致动器并且禁止控制滑架致动器一定间隔的另一个控制电路的操作，以仅通过透镜致动器来实现光束对准， 之后使得另一个控制电路能够通过透镜和滑架致动器的协同作用来保持光束对准。
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公开(公告)号：US4706234A
公开(公告)日：1987-11-10
申请号：US838107
申请日：1986-03-10
Applicant: Hiroo Okada
Inventor： Hiroo Okada
CPC classification number: G11B21/085
Abstract: A head feed control apparatus for a recording/reproducing system using a disk-like data recording medium with a plurality of concentric tracks thereon includes a linear scale mounted on a head and provided with graduations at predetermined intervals, and a scale detector for reading the graduations of the linear scale. This apparatus performs sampling and access operations. In sampling, the head is moved by a predetermined number of graduations of the scale, and a corresponding address is read to detect the number of tracks of each recording medium zone which corresponds to the predetermined number of graduations and to store (the predetermined number of graduations).div.(the number of tracks) as a zone parameter. In access operation, the head is moved by the number of scale graduations corresponding to (an average value of parameters between a zone where the head is currently located and a zone where a target track is located).times.(the number of tracks between the current and target tracks), and thereafter fine adjustment of the head position is performed.
Abstract translation: 一种用于使用具有多个同心轨道的盘状数据记录介质的记录/再现系统的头进给控制装置，包括安装在头上并以预定间隔设置有刻度的线性刻度，以及用于读取刻度的刻度检测器 的线性刻度。 该装置执行采样和访问操作。 在采样中，磁头以规模的刻度移动预定数量的刻度，并且读取相应的地址以检测与预定数量的刻度对应的每个记录介质区的轨道数并存储（预定数量的 毕业）DIVIDED（轨道数）作为区域参数。 在访问操作中，头部被移动到对应于（头部当前位于的区域与目标轨道所在的区域之间的参数的平均值）的比例刻度数x（当前的轨迹数 和目标轨道），然后执行头部位置的微调。
