公开(公告)号：US5402400A

公开(公告)日：1995-03-28

申请号：US109593

申请日：1993-08-20

申请人： Yosuke Hamada ,  Haruaki Otsuki ,  Yuji Hata ,  Shigeyoshi Saito

发明人： Yosuke Hamada ,  Haruaki Otsuki ,  Yuji Hata ,  Shigeyoshi Saito

IPC分类号： G11B21/08 ,  G11B17/22

CPC分类号： G11B21/083

摘要： A disk storage device comprises a microcomputer for estimating an external disturbance compensation signal and storing it and a first adder for adding the external disturbance compensation signal as a feedforward signal to a positioning compensation signal to a drive circuit. Where a positioning compensator for estimating a velocity signal based on a drive signal is provided, a difference signal between the drive signal and a signal proportional to the external disturbance compensation signal, instead of the drive signal, is applied to velocity estimation unit for correction.

摘要翻译： 磁盘存储装置包括用于估计外部干扰补偿信号并存储的微计算机，以及用于将作为前馈信号的外部干扰补偿信号与定位补偿信号相加的驱动电路的第一加法器。 在提供用于基于驱动信号估计速度信号的定位补偿器的情况下，驱动信号和与外部干扰补偿信号成比例的信号（而不是驱动信号）之间的差分信号被施加到用于校正的速度估计单元。

公开(公告)号：US5241435A

公开(公告)日：1993-08-31

申请号：US541724

申请日：1990-06-21

申请人： Shigeyoshi Saito ,  Yuji Hata ,  Takuji Ogawa ,  Jyousei Shimizu ,  Tsuyoshi Takahashi ,  Masahiko Sega ,  Kazuo Ono

发明人： Shigeyoshi Saito ,  Yuji Hata ,  Takuji Ogawa ,  Jyousei Shimizu ,  Tsuyoshi Takahashi ,  Masahiko Sega ,  Kazuo Ono

IPC分类号： G11B5/596

CPC分类号： G11B5/59633

摘要： A method of recording a servo signal on each track of a magnetic disk includes a first signal for demagnetizing the magnetic disk and a second signal for forming the servo signal. The recording width (core width) of the magnetic head is made greater than the width of the track. Parts for recording signals and not recording signals are set in each track. The first and second signals are selected and recorded in the signal recording part, thereby to form the servo signal. Current to be conducted to the magnetic head is cut in the part for not recording signals, and the track is skipped to the next part for recording signals. When the recording of the track has ended, the magnetic head is moved to the next track, and the above steps are repeated.

摘要翻译： 在磁盘的每个磁道上记录伺服信号的方法包括用于磁化磁化的第一信号和用于形成伺服信号的第二信号。 使磁头的记录宽度（磁心宽度）大于磁道的宽度。 在每个轨道中设置用于记录信号而不记录信号的部分。 第一和第二信号被选择并记录在信号记录部分中，从而形成伺服信号。 要在磁头上传输的电流被切断，不记录信号，并将磁道跳到下一部分进行记录信号。 当轨道的记录结束时，磁头被移动到下一个轨道，并重复上述步骤。