公开(公告)号：US5153788A

公开(公告)日：1992-10-06

申请号：US501050

申请日：1990-03-28

Applicant: Keiichi Nishikawa ,  Shigemasa Yoshida

Inventor： Keiichi Nishikawa ,  Shigemasa Yoshida

IPC: G11B5/596 ,  G11B19/04 ,  G11B27/30

CPC classification number: G11B5/59616 ,  G11B19/04 ,  G11B27/3027

Abstract: Magnetization inversion data at different frequencies are recorded as part of servo information before and after an erasing gap between a data sector and a servo sector, the time interval between pulses read out from these magnetization inversion data is detected using a gap detection timer, and a timing for reading out servo information is obtained according to the result of detection by the gap detection timer.

Abstract translation: 在数据扇区和伺服扇区之间的擦除间隙之前和之后记录不同频率的磁化反转数据作为伺服信息的一部分，使用间隙检测定时器检测从这些磁化反转数据读出的脉冲之间的时间间隔， 根据间隙检测定时器的检测结果，得到读取伺服信息的定时。

公开(公告)号：US4510537A

公开(公告)日：1985-04-09

申请号：US491185

申请日：1983-05-03

Applicant: Shigemasa Yoshida ,  Ichiro Araki

Inventor： Shigemasa Yoshida ,  Ichiro Araki

IPC: G01P3/46 ,  G11B5/55

CPC classification number: G11B5/5521 ,  G01P3/46

Abstract: A detector for the moving velocity of a magnetic head of a magnetic disc memory device by electrically processing a position signal of the magnetic head, which includes a circuit for differentiating the position signal, means for rectifying the differentiating circuit, a circuit for sampling-hold of the rectified signal, a phase-shifter for delaying the position signal and means for generating a timing pulse signal to determine the timing for sampling, with the phase delaying characteristic of the transfer function of the differentiating circuit and the phase-shifting circuit being substantially coincided.

Abstract translation: 一种用于磁盘存储装置的磁头的移动速度的检测器，其通过电处理磁头的位置信号，该位置信号包括用于区分位置信号的电路，用于整流微分电路的装置，用于采样保持的电路 ，用于延迟位置信号的移相器和用于产生定时脉冲信号以确定采样定时的装置，其中微分电路和移相电路的传递函数的相位延迟特性基本上是 恰巧

公开(公告)号：US4827200A

公开(公告)日：1989-05-02

申请号：US176774

申请日：1988-04-01

Applicant: Shirou Ogura ,  Shigemasa Yoshida

Inventor： Shirou Ogura ,  Shigemasa Yoshida

IPC: G11B21/08 ,  G05B19/416 ,  G05D13/62 ,  H02P25/06 ,  G05B13/00

CPC classification number: G05B19/416 ,  G05B2219/41437

Abstract: A velocity control unit of a detecting head consists of a differentiation circuit for differentiating a reference velocity signal and feeding it via an analog switch to a first-order lag circuit which generates a feedforward signal. The analog switch is controlled by a constant velocity/deceleration detecting circuit so that it may be turned on in the constant velocity/deceleration period of the head.

Abstract translation: 检测头的速度控制单元由微分电路构成，用于区分参考速度信号并通过模拟开关将其馈送到产生前馈信号的一阶滞后电路。 模拟开关由恒定的速度/减速检测电路控制，使其可以在头的恒定速度/减速周期内接通。

公开(公告)号：US3989974A

公开(公告)日：1976-11-02

申请号：US594015

申请日：1975-07-08

Applicant: Hiroshi Tottori ,  Shigemasa Yoshida ,  Fumihiko Isogai ,  Etsuo Hatabe

Inventor： Hiroshi Tottori ,  Shigemasa Yoshida ,  Fumihiko Isogai ,  Etsuo Hatabe

IPC: G09G3/28 ,  H01J11/20 ,  H01J11/24 ,  H01J11/38 ,  H01J11/44 ,  H01J61/06

CPC classification number: G09G3/296 ,  G09G3/297

Abstract: A gas discharge display panel is disclosed for displaying images by selectively making luminescent cross points of main electrodes arranged to form the matrix through a discharge gap. The display includes a switching operation part which comprises auxiliary electrodes which are arranged in parallel to the main electrodes and to which a turn-on or turn-off pulse is applied and switching electrodes which cross the auxiliary electrodes to form the matrix through the discharge gap so as to select predetermined cross points of the auxiliary electrodes. The switching operation part is incorporated in the panel together with a display part comprising the main electrodes to form the matrix through the discharge gaps whereby switching circuits for switching each of the main electrodes which are complicated and expensive can be improved.

Abstract translation: 公开了一种气体放电显示面板，用于通过选择性地使通过放电间隙布置成形成矩阵的主电极的发光交叉点来显示图像。 显示器包括开关操作部分，其包括与主电极平行布置并且施加导通或关断脉冲的辅助电极和穿过辅助电极以通过放电间隙形成基体的开关电极 以选择辅助电极的预定交叉点。 开关操作部分与包括主电极的显示部分一起并入面板中，以通过放电间隙形成矩阵，从而可以提高用于切换复杂且昂贵的主电极的开关电路。