公开(公告)号：US5428591A

公开(公告)日：1995-06-27

申请号：US128967

申请日：1993-09-30

Applicant: Cheol-won Lee

Inventor： Cheol-won Lee

IPC: G11B7/00 ,  G11B7/085 ,  G11B11/105 ,  G11B21/08

CPC classification number: G11B11/10556 ,  G11B7/08541

Abstract: An apparatus for compensating a track when a track crossing signal is not generated due to an offset detection flag (ODF) region or a defect of a disk, comprises a missed track compensating processor for compensating a missed track signal generated when the light beam passes through the ODF region, and a track counter for mixing a pulse signal of a monostable multivibrator with a compensation signal output from the missed track compensation processor and counting the number of tracks. Thus, the missed track signal which is generated due to the ODF region and disk defects is compensated, thereby accurately counting the number of tracks over which the light beam cross.

Abstract translation: 当由于偏移检测标志（ODF）区域或盘的缺陷而不产生轨迹交叉信号时，用于补偿轨迹的装置包括用于补偿当光束通过时产生的漏道信号的缺失轨道补偿处理器 ODF区域和用于将单稳态多谐振荡器的脉冲信号与从缺失轨道补偿处理器输出的补偿信号混合的轨道计数器，并对轨道数进行计数。 因此，由于ODF区域和盘缺陷而产生的漏道信号被补偿，从而精确地计数光束交叉的轨道数。

公开(公告)号：US5394386A

公开(公告)日：1995-02-28

申请号：US132312

申请日：1993-10-06

Applicant: Jeong-il Park ,  Cheol-won Lee

Inventor： Jeong-il Park ,  Cheol-won Lee

IPC: G11B7/085 ,  G11B21/08

CPC classification number: G11B7/08541 ,  G11B7/08535

Abstract: An optical disk high-speed control device and method performs a coarse seek which controls the crossing speed of optical tracks by counting a track traverse signal of an optical head in order to make the optical head reach a target track quickly and accurately in one driving operation, to reduce access time and simplify the driving circuit of an access device by minimizing the time required for fine seeking.

Abstract translation: 光盘高速控制装置和方法通过对光头的轨迹横越信号进行计数来控制光轨的交叉速度，以便在一个驱动操作中使光头快速准确地到达目标轨道，执行粗略搜索 ，通过最小化精细寻找所需的时间来减少访问时间并简化访问设备的驱动电路。

公开(公告)号：US5363359A

公开(公告)日：1994-11-08

申请号：US135622

申请日：1993-10-14

Applicant: Cheol-won Lee

Inventor： Cheol-won Lee

IPC: G05D13/62 ,  G11B7/085 ,  G11B19/28 ,  G11B21/08 ,  H02P29/00

CPC classification number: G11B7/08529 ,  G11B21/083

Abstract: A velocity error signal generation method for controlling a velocity by comprising an actual velocity signal from an actual velocity generator with a command velocity signalfrom a command velocity generator includes removing a direct current component from the actual velocity signal, adding the direct current component of the command velocity signal to the alternating current component of the actual velocity signal, adding a minute voltage to the command velocity signal, subtracting the minute voltage from the command velocity signal, comparing a first signal obtained by adding the direct current component of the command velocity signal to the alternating current component of the actual velocity signal with a second signal obtained by adding the minute voltage to the command velocity signal, comparing the first signal with a thrid signal obtained by subtracting the minute voltage from the command velocity signal, and determining whether the actual velocity or the command velocity will be used an an input for generating a velocity error signal. In a velocity generating apparatus for realizing the method, when the difference between the actual and command velocity signals is outside a predetermined range, the actual velocity is regarded as being erroneously measured and is then replaced with the command velocity to detect a velocity error, thereby enhancing the reliability of a control system.

Abstract translation: 通过包括来自命令速度发生器的具有指令速度信号的实际速度发生器的实际速度信号来控制速度的速度误差信号产生方法包括从实际速度信号中去除直流分量，将命令的直流分量 速度信号到实际速度信号的交流分量，向指令速度信号添加微小电压，从命令速度信号中减去微小电压，将通过将命令速度信号的直流分量相加得到的第一信号与 将实际速度信号的交流分量与通过将微小电压相加到指令速度信号而获得的第二信号进行比较，将第一信号与通过从指令速度信号中减去微小电压而获得的thrid信号进行比较， 速度或指令速度将会 用于产生速度误差信号的输入。 在用于实现该方法的速度产生装置中，当实际速度信号和指令速度信号之间的差异超出预定范围时，将实际速度视为被错误地测量，然后用命令速度替换以检测速度误差，从而 提高控制系统的可靠性。