Optical storage apparatus
    41.
    发明授权
    Optical storage apparatus 失效
    光存储装置

    公开(公告)号:US06249496B1

    公开(公告)日:2001-06-19

    申请号:US09196098

    申请日:1998-11-19

    IPC分类号: G11B709

    摘要: A correction processing unit for correcting a level fluctuation appearing on a tracking error signal when a laser beam passes an ID area on a medium track during an on-track control is provided. That is, in the correction processing unit, a correction value determined by a correction value determining unit at a correction timing detected by a correction timing discriminating unit is subtracted by a correcting unit from a signal value obtained by sampling and converting the tracking error signal into digital data by an A/D converter at a predetermined period and reading, thereby performing the correction.

    摘要翻译: 提供了一种校正处理单元,用于当在轨道控制期间激光束通过介质轨道上的ID区域时,校正出现在跟踪误差信号上的电平波动。 也就是说,在校正处理单元中,通过校正单元从由校正定时识别单元检测的校正定时由校正值确定单元确定的校正值从通过采样获得的信号值中减去,并将跟踪误差信号转换为 通过A / D转换器以预定周期进行数字数据读取,从而进行校正。

    Recording power adjustment for optical storage apparatus
    42.
    发明授权
    Recording power adjustment for optical storage apparatus 失效
    记录光存储装置的功率调整

    公开(公告)号:US6067284A

    公开(公告)日:2000-05-23

    申请号:US961444

    申请日:1997-10-30

    摘要: After a first test pattern and a second test pattern were sequentially test written to at least two adjacent tracks by a light emission driving of a laser diode, the adjacent track in which the first test pattern was first test written is reproduced, thereby checking the presence or absence of a data error. When there is the data error, the test writing is repeated while changing a light emitting power until the data error is eliminated. When there is no data error, the light emitting power used in the test writing is set to a recording power.

    摘要翻译: 在通过激光二极管的发光驱动将第一测试图案和第二测试图案顺序测试写入至少两个相邻轨道之后,再次首先测试第一测试图案的相邻轨迹,从而检查存在 或不存在数据错误。 当存在数据错误时,在改变发光功率的同时重复测试写入,直到消除数据错误。 当没有数据错误时,将测试写入中使用的发光功率设置为记录功率。

    Optical storage device made thinner by substituting electrical means for
capabilities of sensors
    44.
    发明授权
    Optical storage device made thinner by substituting electrical means for capabilities of sensors 失效
    光学存储设备通过用电气装置替代传感器的能力而变薄

    公开(公告)号:US5966353A

    公开(公告)日:1999-10-12

    申请号:US959454

    申请日:1997-10-28

    摘要: There is provided an optical storage device that can position a lens carriage and objective lens even when position sensors for the lens carriage and objective lens are excluded in an effort to make an optical disk unit thinner. In the optical storage device, immediately after an optical disk is loaded in a main body, the cutoff frequency of a filter lying on a path of a reproduction signal is temporarily changed to a lower frequency. A spacing of sectors of the optical disk is detected using a signal sent from the filter. A type of an optical storage medium and a position of a current reproduction track are detected on the basis of the detected sector spacing and data stored in a memory.

    摘要翻译: 提供了一种光学存储装置,即使在排除透镜滑架和物镜的位置传感器以致使光盘单元更薄时,其也可以定位透镜滑架和物镜。 在光存储装置中,在将光盘装入主体之后,将再现信号的路径上的滤波器的截止频率临时变更为较低的频率。 使用从滤波器发送的信号来检测光盘扇区的间隔。 基于检测到的扇区间隔和存储在存储器中的数据来检测光存储介质的类型和当前再现轨迹的位置。

    Wheel speed correcting system
    46.
    发明授权
    Wheel speed correcting system 失效
    车轮速度校正系统

    公开(公告)号:US5725067A

    公开(公告)日:1998-03-10

    申请号:US611782

    申请日:1996-03-08

    摘要: When a steady straight advancing state presuming device presumes that the vehicle is in a steady straight advancing state, and a slip rate calculating device calculates a small slip rate, based on an output from a driving-state detecting device, or when the steady straight advancing state presuming device presumes that the vehicle is in the steady straight advancing state, and a driven wheel torque calculating device calculates a small driven wheel torque, based on the output from the driving-state detecting device, a correction execution determining device determines that the vehicle is in a stable state suitable for correcting the wheel speed. By a command from the correction execution determining device, a correcting device corrects the driven wheel speed or the follower wheel speed based on a speed ratio of the driven wheel speed to the follower wheel speed calculated by a speed ratio calculating device. Thus, when a different-diameter tire has been mounted on a wheel, it is possible to precisely correct the wheel speed without being influenced by the slipping of the driven wheels or by the turning of the vehicle.

    摘要翻译: 当稳定的直进状态推定装置假设车辆处于稳定的直线进给状态时,滑移率计算装置基于来自驾驶状态检测装置的输出,或者当稳定的直行进 状态推定装置假设车辆处于稳定的直线行进状态,并且从动轮转矩计算装置基于来自驾驶状态检测装置的输出来计算小的从动轮转矩,校正执行确定装置确定车辆 处于适合于修正车轮速度的稳定状态。 通过来自校正执行判定装置的命令,校正装置基于由速比计算装置计算的从动轮速度与从动轮速度的速比来校正从动轮速度或从动轮速度。 因此,当将不同直径的轮胎安装在车轮上时,可以精确地校正车轮速度,而不受驱动轮的滑动或车辆的转动的影响。

    Pneumatic tire pressure change detecting system comparing wheel speeds
and weighting detection based on running conditions
    47.
    发明授权
    Pneumatic tire pressure change detecting system comparing wheel speeds and weighting detection based on running conditions 失效
    气动轮胎压力变化检测系统根据运行条件比较轮速和加权检测

    公开(公告)号:US5513523A

    公开(公告)日:1996-05-07

    申请号:US308440

    申请日:1994-09-19

    IPC分类号: B60C23/06 G01M17/02 E01C23/02

    CPC分类号: B60C23/061

    摘要: A subtractor calculates an actual wheel speed difference between rotational speeds of left and right wheels on a motor vehicle, and a steering angle converter calculates an actual steering angle from the actual wheel speed difference. The difference between the actual steering angle and an adequate steering angle which is produced based on a lateral acceleration is compared with a predetermined reference range. If the difference between the actual and adequate steering angles exceeds the predetermined reference range, then the pneumatic pressure of a tire on one of the left and right wheels is determined as being lowered. In the steering angle converter, a weight value is established according to a running condition of the motor vehicle, and the calculated actual steering angle or comparative sensitivity is varied according to the weight value. Since the comparative sensitivity is varied according to the running condition, a reduction in the pneumatic pressure of the tire can be detected even under running conditions which lead to large errors.

    摘要翻译: 减法器计算机动车辆上左右轮的转速之间的实际车轮速度差,转向角转换器根据实际车轮速度差计算实际转向角。 将实际转向角与基于横向加速度产生的适当的转向角的差与预定的参考范围进行比较。 如果实际和足够的转向角之间的差超过预定的参考范围,则确定左轮和右车之一上的轮胎的气压降低。 在转向角转换器中,根据机动车辆的行驶状态建立重量值,并且根据重量值改变计算出的实际转向角度或比较灵敏度。 由于比较灵敏度根据运行条件而变化,因此即使在导致大的误差的运行条件下也能够检测出轮胎的气压降低。

    Driven wheel torque control system
    48.
    发明授权
    Driven wheel torque control system 失效
    驱动轮扭矩控制系统

    公开(公告)号:US5472061A

    公开(公告)日:1995-12-05

    申请号:US214327

    申请日:1994-03-17

    摘要: A driven wheel torque control system includes a slip-reduction output torque control device for adjusting the output torque from a prime mover of a vehicle in accordance with the slipping state of a driven wheel driven by the prime mover in order to reduce an excessive slipping of the driven wheel, an operation quantity detecting device for detecting the operation quantity of an operating element for adjusting the output torque from the prime mover, a grip force detecting device for detecting a grip force of a road surface, an output torque gain changing device for changing the output torque control gain from the prime mover with respect to the output from the operation quantity detecting device on the basis of the output from the grip force detecting device, and a gain variable output torque control device for adjusting the output torque from the prime mover on the basis of the output torque control gain changed by the output control gain changing device. Thus, it is possible to positively control the slipping state of the driven wheel on the basis of a driver's will.

    摘要翻译: 从动轮转矩控制系统包括滑差减小输出转矩控制装置,用于根据由原动机驱动的从动轮的滑动状态来调整来自车辆的原动机的输出转矩,以便减少由原动机驱动的从动轮的滑动状态 从动轮,用于检测用于调节来自原动机的输出转矩的操作元件的操作量的操作量检测装置,用于检测路面的抓地力的抓地力检测装置,用于 根据来自握持力检测装置的输出,相对于来自操作量检测装置的输出,来自原动机的输出转矩控制增益改变;以及增益可变输出转矩控制装置,用于调整来自主轴的输出转矩 基于由输出控制增益改变装置改变的输出转矩控制增益。 因此,可以基于驾驶员的意志来肯定地控制从动轮的滑动状态。

    Disk apparatus having a read error retry function
    49.
    发明授权
    Disk apparatus having a read error retry function 失效
    具有读错误重试功能的磁盘设备

    公开(公告)号:US5386405A

    公开(公告)日:1995-01-31

    申请号:US21281

    申请日:1993-02-22

    摘要: A disk apparatus having a readout circuit for providing readout data signals and capable of immediately detecting runaway of a readout clock signal generated from a VFO (Variable Frequency Oscillator) in the readout circuit if such occurs. The disk apparatus is free from a read error due to a permanent defect on a disk, e.g., an optical disk, or other causes. The disk apparatus includes a head for picking up signals from a disk, and a readout circuit for providing a readout signal and a readout clock signal, including a digitizing circuit for receiving and digitizing a data signal picked up by the head into a binary data signal, a reference clock generator for generating a reference clock signal and a variable frequency oscillator for receiving a read-gate signal, the digitized binary data signal and the reference clock signal and generating a readout data signal and a readout clock signal, each synchronized with the reference clock signal. The disk apparatus further includes a detecting circuit for supplying the read-gate signal to and receiving the reference clock signal and the readout clock signal from the readout circuit and for detecting that a synchronizing operation in the variable frequency oscillator is in an abnormal state and resetting the read-gate signal when a frequency difference between the reference clock signal and the readout clock signal exceeds a predetermined value.

    摘要翻译: 一种盘装置,具有用于提供读出数据信号的读出电路,并且能够立即检测在读出电路中发生从VFO(变频振荡器)产生的读出时钟信号的失控。 磁盘装置由于磁盘上的永久性缺陷(例如光盘)或其他原因而没有读取错误。 盘装置包括用于拾取来自盘的信号的头,以及用于提供读出信号和读出时钟信号的读出电路,包括数字化电路,用于接收和数字化头部拾取的数据信号为二进制数据信号 用于产生参考时钟信号的参考时钟发生器和用于接收读取门信号的可变频率振荡器,数字化二进制数据信号和参考时钟信号,并产生读出数据信号和读出时钟信号, 参考时钟信号。 磁盘装置还包括检测电路,用于将读取栅极信号提供给读出电路的参考时钟信号和读出时钟信号,并且用于检测可变频率振荡器中的同步操作处于异常状态并重置 当参考时钟信号和读出时钟信号之间的频率差超过预定值时,读取门信号。

    Disk storage apparatus including a single power supply hysteresis
comparator having a symmetrical characteristic
    50.
    发明授权
    Disk storage apparatus including a single power supply hysteresis comparator having a symmetrical characteristic 失效
    包括具有对称特性的单个电源滞后比较器的磁盘存储装置

    公开(公告)号:US5351222A

    公开(公告)日:1994-09-27

    申请号:US957521

    申请日:1992-10-06

    IPC分类号: G11B7/085

    CPC分类号: G11B7/08541

    摘要: A rectangular wave generator includes a comparator having a first input terminal receiving an input signal, a second input terminal, and an output terminal. The comparator slices the input signal at a hysteresis voltage so that a rectangular wave is output via the output terminal. The generator also includes a differentiating circuit connected between the output terminal and the second input terminal. The differentiating circuit functions as a feedback circuit. In lieu of the differentiating circuit, it is possible to use a feedback circuit connected between the output terminal and the second input terminal, the feedback circuit comprising a control unit for changing a feedback quantity of the differentiating circuit in accordance with variations in a frequency of the input signal.

    摘要翻译: 矩形波发生器包括具有接收输入信号的第一输入端子,第二输入端子和输出端子的比较器。 比较器以滞后电压对输入信号进行切片,使得经由输出端子输出矩形波。 该发生器还包括连接在输出端和第二输入端之间的微分电路。 微分电路作为反馈电路。 作为微分电路的代替,可以使用连接在输出端子和第二输入端子之间的反馈电路,反馈电路包括控制单元,用于根据频率的变化来改变微分电路的反馈量 输入信号。