公开(公告)号：US5689483A

公开(公告)日：1997-11-18

申请号：US718172

申请日：1996-09-19

申请人： Toru Ikeda

发明人： Toru Ikeda

IPC分类号： G11B21/08 ,  G11B7/085 ,  G11B7/125 ,  G11B17/22 ,  G11B7/00

CPC分类号： G11B7/08529

摘要： An optical storage apparatus for confirming that an optical head reaches a predetermined position by using no positional sensor, is disclosed. The optical storage apparatus includes a stopper provided in the predetermined position, a drive circuit for driving a moving unit for moving the optical head, a pulse width modulation circuit for comparing a value of current flowing across the drive circuit with a current indicating value and modulating a width of the drive pulse given to the drive circuit in accordance with a compared result, and a control circuit for giving the current indicating value to the pulse width modulation circuit, monitoring the width of the drive pulse, and thus confirming that the optical head impinges upon the stopper and stops by the monitoring, or a control circuit for giving the drive signal by which the pulse width modulation circuit outputs the drive pulse having a fixed pulse width, monitoring the value of current flowing across the drive circuit, and thus confirming that the optical head impinges upon the stopper and stops by the monitoring.

摘要翻译： 公开了一种用于通过不使用位置传感器来确认光学头到达预定位置的光学存储装置。 光存储装置包括：设置在预定位置的止动件;驱动电路，用于驱动用于移动光头的移动单元;脉宽调制电路，用于将流过驱动电路的电流值与电流指示值进行比较;以及调制 根据比较结果给予驱动电路的驱动脉冲的宽度，以及用于向脉宽调制电路提供电流指示值的控制电路，监视驱动脉冲的宽度，从而确认光头 或者用于给出脉宽调制电路输出具有固定脉冲宽度的驱动脉冲的驱动信号的控制电路，监视流经驱动电路的电流值，从而确认 光头撞击塞子并通过监视停止。

公开(公告)号：US5589815A

公开(公告)日：1996-12-31

申请号：US329941

申请日：1994-10-26

申请人： Takashi Nishihara ,  Toru Ikeda ,  Osamu Yano ,  Shuji Shiraishi

发明人： Takashi Nishihara ,  Toru Ikeda ,  Osamu Yano ,  Shuji Shiraishi

IPC分类号： B60C23/06 ,  B60C23/00

CPC分类号： B60C23/061

摘要： The rotational speed difference between rotational speeds of front and rear road wheels of a motor vehicle is weighted by a first ratio, and the difference between the rotational speed difference between rotational speeds of front left and right road wheels and an average signal of reference steering angle or between the rotational speed difference between rotational speeds of rear left and right road wheels and the average signal of reference steering angle is weighted by a second ratio. A sum signal representative of the sum of the rotational speed difference weighted by the first ratio and the difference weighted by the second ratio is used to determine a pneumatic tire pressure reduction highly accurately even when running conditions of the motor vehicle change such as when the motor vehicle makes a turn.

摘要翻译： 机动车辆的前后车轮的转速之间的转速差由第一比例加权，前左右车轮的转速与基准转向角的平均信号之间的差 或左后车轮的转速与基准转向角的平均信号之间的转速差以第二比例进行加权。 代表由第一比率加权的转速差和由第二比率加权的差的总和的和信号用于即使在机动车辆的运行条件改变时，例如当马达 车辆轮到

公开(公告)号：US5495458A

公开(公告)日：1996-02-27

申请号：US276863

申请日：1994-07-06

申请人： Toru Ikeda ,  Shigenori Yanagi ,  Akira Minami

发明人： Toru Ikeda ,  Shigenori Yanagi ,  Akira Minami

IPC分类号： G11B20/10 ,  G11B7/085 ,  G11B7/125 ,  G11B11/105 ,  G11B20/12 ,  G11B20/14 ,  G11B20/18 ,  G11B27/10 ,  G11B27/30 ,  G11B17/22

CPC分类号： G11B7/126 ,  G11B20/1403 ,  G11B20/18 ,  G11B27/105 ,  G11B27/3027 ,  G11B7/08505 ,  G11B11/10595 ,  G11B20/1258 ,  G11B2020/10916 ,  G11B2020/183 ,  G11B2220/20

摘要： A recovery is promptly executed for a reading error of a track address in a modified constant angular velocity format. Upon seeking, when a defective reading operation of the track address occurs, a clock frequency of the zone corresponding to each detecting position is selected due to the detection of the head by a head position sensor or the movement of the head to a home position at which a detection signal of a home position sensor is obtained, and the reading operation is retried. Errors due to back talk noises upon reproduction are reduced. At the time of retry for the occurrence of errors due to the back talk noises, a modulation amount of a read beam from a laser diode is changed.

摘要翻译： 对于修改的恒定角速度格式的轨道地址的读取错误，立即执行恢复。 当寻找到当轨道地址的缺陷读取操作发生时，由于通过头位置传感器检测到头部或者将头部移动到原始位置，所以选择与每个检测位置对应的区域的时钟频率 获取原位传感器的检测信号，并重试读取操作。 由于再生时的回音噪音导致的错误减少。 在由于背景噪声引起的错误发生的重试时，来自激光二极管的读取光束的调制量改变。