Data-track search apparatus for locating a desired data track on a
record carrier
    41.
    发明授权
    Data-track search apparatus for locating a desired data track on a record carrier 失效
    用于在记录载体上定位所需数据轨道的数据轨道搜索装置

    公开(公告)号:US5319623A

    公开(公告)日:1994-06-07

    申请号:US538556

    申请日:1990-06-15

    CPC classification number: G11B7/08529 G11B7/08511

    Abstract: A data-track search apparatus is provided with: a tracking error detection unit for detecting a positioning error between a light beam on a record carrier and a track; a moving unit for moving the light beam on the record carrier in a direction traversing the tracks on the record carrier; a focusing control failure detection unit for detecting a focusing control failure, and a control unit for controlling the moving unit in response to an output signal from the tracking error detection unit during the search for a desired track. The control unit regulates the moving unit so as not to accelerate but to decelerate the moving unit in the event of a focusing control failure.

    Abstract translation: 数据轨道搜索装置具有:跟踪误差检测单元,用于检测记录载体上的光束与轨道之间的定位误差; 移动单元,用于沿着横过记录载体上的轨道的方向移动记录载体上的光束; 用于检测聚焦控制故障的聚焦控制故障检测单元,以及用于在搜索期望的轨道期间响应于来自跟踪误差检测单元的输出信号来控制移动单元的控制单元。 控制单元调节移动单元以便不加速,但是在聚焦控制失败的情况下使移动单元减速。

    Track access device and tracking control device
    42.
    发明授权
    Track access device and tracking control device 失效
    跟踪访问设备和跟踪控制设备

    公开(公告)号:US5268883A

    公开(公告)日:1993-12-07

    申请号:US948463

    申请日:1992-09-22

    CPC classification number: G11B7/08517 G11B7/094

    Abstract: A data recording/reproducing device has a pickup for recording/reproducing information on disk which has tracks formed on a recording area and a ROM area. A track access device for moving the pickup from a starting track at which the pickup is presently located to a target track includes a moving arrangement for moving the pickup in a direction crossing tracks, a tracking error signal generator for generating an analog signal representing the crossing of the tracks by the pickup, and position detector for detecting the position of the pickup in either one of the recording and ROM areas. Also, for processing the tracking error signal, an amplifier, an offset adder and hysteresis comparator are provided, each having differing operating parameters when the pickup is located in the recording area and then when it is located in the ROM area.

    Abstract translation: 数据记录/再现装置具有用于在盘上记录/再现信息的拾取器,该盘具有形成在记录区域和ROM区域上的轨迹。 用于将拾取器从拾取器当前位于的起始轨道移动到目标轨道的轨道存取装置包括用于沿着与轨迹相交的方向移动拾取器的移动装置,用于产生代表横越的模拟信号的跟踪误差信号发生器 的位置检测器,以及位置检测器,用于检测拾音器在记录和ROM区域之一中的位置。 此外,为了处理跟踪误差信号,提供放大器,偏移加法器和滞后比较器,当拾取器位于记录区域中时,当它们位于ROM区域中时,其具有不同的操作参数。

    Slip-off preventing tracking control apparatus
    43.
    发明授权
    Slip-off preventing tracking control apparatus 失效
    防滑跟踪控制装置

    公开(公告)号:US5202864A

    公开(公告)日:1993-04-13

    申请号:US813930

    申请日:1991-12-27

    Abstract: In an apparatus in which information is reproduced by projecting/receiving an optical beam to/from a recording carrier having a large number of information tracks, tracking control is performed so as to maintain a reproducing position on an information track by supplying a track deviation signal to an actuator. If this track deviation signal becomes asymmetric by an inclination, etc. of the recording carrier so that a shock is applied to the apparatus, jumping out of a track occurs, resulting in slip-off of the optical beam from the reproducing position. This slip-off can be prevented by detecting a position of a movable support member carrying a focusing lens for projecting and receiving the optical beam and feeding back the position signal to the tracking control system, or by extracting a low-frequency component of an output signal of a control circuit and feeding back the extracted signal to the tracking control system.

    Abstract translation: 在通过向具有大量信息轨道的记录载体投射/接收光束来再现信息的装置中,执行跟踪控制,以通过提供轨道偏差信号来保持信息轨道上的再现位置 到致动器。 如果该轨道偏离信号由于记录载体的倾斜等而变得不对称,使得对设备施加冲击,则跳出轨道,导致光束从再现位置脱落。 可以通过检测携带用于投射和接收光束的聚焦透镜的可移动支撑构件的位置并将位置信号反馈到跟踪控制系统,或者通过提取输出的低频分量来防止该滑落 控制电路的信号并将提取的信号反馈到跟踪控制系统。

    Track search apparatus
    44.
    发明授权
    Track search apparatus 失效
    追踪搜寻器

    公开(公告)号:US5146440A

    公开(公告)日:1992-09-08

    申请号:US397860

    申请日:1989-08-24

    CPC classification number: G11B7/08529

    Abstract: A track search apparatus is composed of an actuator such as voice coil motor for moving a light beam to traverse tracks, a position detector for detecting that the light beam has reached a predetermined position in front of a target track, a velocity detector for detecting the velocity of the light beam, and acceleration/deceleration controller such as microcomputer for applying, to the actuator, a driving signal according to the output from the velocity detector when a signal is generated from the position detector.

    Slip-off preventing tracking control apparatus
    45.
    发明授权
    Slip-off preventing tracking control apparatus 失效
    防滑跟踪控制装置

    公开(公告)号:US5109366A

    公开(公告)日:1992-04-28

    申请号:US337156

    申请日:1989-04-12

    Abstract: In an apparatus in which information is reproduced by projecting/receiving an optical beam to/from a recording carrier having a large number of information tracks, tracking control is performed so as to keep a reproducing position on an information track by supplying a track deviation signal to an actuator. If this track deviation signal becomes asymetric by an inclination, etc. of the recording carrier so that a shock is applied to the apparatus, jumping out of a track occurs, resulting in slipping-off of the reproducing position. This slipping-off can be prevented by detecting a position of a movable support member carrying a focusing lens for projecting and receiving the optical beam and feeding back the position signal to the tracking control system, or by extracting a low-frequency component of an output signal of a control circuit and feeding back the extracted signal to the tracking control system.

    Abstract translation: 在通过向具有大量信息轨道的记录载体投射/接收光束来再现信息的装置中,执行跟踪控制,以通过提供轨道偏差信号来保持信息轨道上的再现位置 到致动器。 如果该轨道偏离信号由于记录载体的倾斜度等而不对称,使得对设备施加冲击,则跳出轨道,导致再现位置的滑落。 可以通过检测携带用于投射和接收光束的聚焦透镜的可移动支撑构件的位置并将位置信号反馈到跟踪控制系统,或者通过提取输出的低频分量来防止该滑落 控制电路的信号并将提取的信号反馈到跟踪控制系统。

    Speed change control apparatus for automatic transmissions
    47.
    发明授权
    Speed change control apparatus for automatic transmissions 失效
    用于自动变速器的变速控制装置

    公开(公告)号:US4893527A

    公开(公告)日:1990-01-16

    申请号:US100364

    申请日:1987-09-23

    Abstract: A speed change control apparatus for an automatic transmission having a plurality of friction elements in which a gear stage is established by engaging one of the friction elements and disengaging one of the others. The speed change control apparatus includes control valves connected to respective ones of the friction elements, a duty solenoid valve connected to each oil line supplying a respective one of the control valves with control hydraulic pressure, and control means for engaging one friction element by outputting an engagement duty signal to one duty solenoid valve to control the control hydraulic pressure, and disengaging one of the other friction elements correspondingly by outputting disengagement duty signals to one of the other duty solenoid valves to control the control hydraulic pressure.

    Abstract translation: 一种用于具有多个摩擦元件的自动变速器的变速控制装置,在所述多个摩擦元件中,通过使所述摩擦元件中的一个啮合并使其中一个摩擦元件彼此脱离而形成齿轮台。 变速控制装置包括连接到各个摩擦元件的控制阀,连接到各控制阀的控制液压的每个油管线的负载电磁阀,以及用于通过输出一个摩擦元件来接合一个摩擦元件的控制装置 接合负载信号到一个工作电磁阀,以控制控制液压,并且通过向其他工作电磁阀之一输出脱离负载信号来相应地分离其中一个摩擦元件,以控制控制液压。

    Revolution speed ratio control system for a continuously variable
transmission
    48.
    发明授权
    Revolution speed ratio control system for a continuously variable transmission 失效
    用于无级变速器的转速变速比控制系统

    公开(公告)号:US4790214A

    公开(公告)日:1988-12-13

    申请号:US890651

    申请日:1986-07-29

    CPC classification number: F16H61/66259 Y10T477/624 Y10T477/62427

    Abstract: An electronic control circuit calculates the actual revolution speed ratio between the driving and driven pulleys of the transmission, generates a first electric control signal corresponding to the difference between the actual revolution speed ratio and an aimed revolution speed ratio predetermined for both the pulleys in conjunction with the input torque of the input shaft and required torque for the output shaft, and generates a second electric control signal made of the sum of both an electric signal corresponding to the actual revolution speed ratio and an electric signal corresponding to the difference. A hydraulic control circuit includes a pressure oil source, a first cylinder which is provided on the input shaft and supplied with working oil from the pressure oil source to push a movable member of a driving pulley toward a fixed member thereof, a second cylinder which is provided on the output shaft and supplied with working oil from the pressure oil source to push a movable member of a driven pulley toward a fixed member thereof, a first control valve which is disposed in an oil passage for connecting the pressure oil source and a first cylinder to each other and acts on the basis of the first electric control signal to control the flow rate of the working oil supplied to or drained from the first cylinder, and a second control valve which is disposed in an oil passage for connecting the pressure oil source and the second cylinder to each other and acts on the basis of the second electric control signal to control the pressure of the working oil supplied to the second cylinder.

    Abstract translation: 电子控制电路计算变速器的驱动和从动皮带轮之间的实际转速比,产生对应于实际转速比和两个滑轮预定的目标转速之差的第一电控信号, 输入轴的输入转矩和输出轴所需的转矩,并且产生由对应于实际转速比的电信号和对应于该差的电信号两者的和构成的第二电控信号。 液压控制回路包括压力油源,第一气缸,设置在输入轴上并从压力油源供给工作油,将驱动滑轮的可动构件推向其固定构件;第二气缸, 设置在输出轴上并从压力油源供给工作油,以将从动皮带轮的可动件推向其固定部件;第一控制阀,设置在用于连接压力油源的油路和第一 气缸彼此相对并且基于第一电控信号起作用,以控制从第一气缸供应或排出的工作油的流量;以及第二控制阀,其设置在用于连接压力油的油路中 源和第二气缸彼此相对并且基于第二电控信号起作用,以控制供应到第二气缸的工作油的压力。

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