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1. 发明授权

US5404253A Estimator-based runout compensation in a disk drive 失效
标题翻译：磁盘驱动器中基于估计器的跳动补偿
公开(公告)号：US5404253A
公开(公告)日：1995-04-04
申请号：US81635
申请日：1993-06-24
申请人： Christopher L. Painter
发明人： Christopher L. Painter
IPC分类号： G05B11/36 , G11B5/596 , G11B21/10
CPC分类号： G11B5/59627
摘要： In a disk drive controller, a head position servo compensates for repetitive runout disturbances arising from displacement of the center of the concentric data storage tracks from the axis of rotation of the disk. An estimator model is provided which includes first and second runout parameters for emulating the sinusoidal runout disturbance at a period that is the same as the rotational period of the disk. The runout parameter values generated from the model are stored in a reference table and used during read/write operations to adjust compensator-generated command signals in order to compensate for repetitive runout. Alternatively, an estimator including the runout parameters is operated in real time to provide estimated state signals as feedback signals for the servo system.
摘要翻译：在磁盘驱动器控制器中，磁头位置伺服器补偿由同心数据存储轨道的中心从磁盘的旋转轴线的位移引起的重复跳动扰动。提供了估计器模型，其包括用于在与盘的旋转周期相同的周期处模拟正弦波跳动干扰的第一和第二跳动参数。从模型生成的跳动参数值存储在参考表中，并在读/写操作期间使用，以调整补偿器生成的命令信号，以补偿重复的跳动。或者，包括跳动参数的估计器被实时操作以提供估计的状态信号作为伺服系统的反馈信号。

2. 发明授权

US08026742B1 Phase detector 有权
标题翻译：相位检测器
公开(公告)号：US08026742B1
公开(公告)日：2011-09-27
申请号：US12860440
申请日：2010-08-20
申请人： Pantas Sutardja , Christopher L. Painter , Yingxuan Li , Qing Yang
发明人： Pantas Sutardja , Christopher L. Painter , Yingxuan Li , Qing Yang
IPC分类号： H03D13/00
CPC分类号： H03D13/00
摘要： In one embodiment, a phase detector is provided comprising a first input, a second input, and first circuitry in communication with the first and second inputs, the first circuitry operative to provide an indication of a phase difference between a first signal supplied by the first input and a second signal supplied by the second input, wherein an aberration in one of the first and second signals results in an incorrect indication of phase difference. The phase detector also comprises second circuitry in communication with the first circuitry, the second circuitry operative to provide a correct indication of phase difference despite the aberration in the at least one of the first and second signals. In another embodiment, a differential phase detector is provided.
摘要翻译：在一个实施例中，提供了一种相位检测器，包括第一输入端，第二输入端和与第一和第二输入端通信的第一电路，第一电路用于提供由第一输入端提供的第一信号之间的相位差的指示，输入和由第二输入提供的第二信号，其中第一和第二信号之一中的像差导致相位差的不正确指示。相位检测器还包括与第一电路通信的第二电路，第二电路可操作以提供相位差的正确指示，尽管第一和第二信号中的至少一个信号中存在像差。在另一个实施例中，提供差分相位检测器。

3. 发明授权

US08559287B1 Method and system for fault protection using a linear feedback shift register 失效
标题翻译：使用线性反馈移位寄存器进行故障保护的方法和系统
公开(公告)号：US08559287B1
公开(公告)日：2013-10-15
申请号：US12143564
申请日：2008-06-20
申请人： William R. Foland, Jr. , Eric A. Richards , Christopher L. Painter
发明人： William R. Foland, Jr. , Eric A. Richards , Christopher L. Painter
IPC分类号： G11B11/00
CPC分类号： G11C29/52 , G11C7/24 , G11C19/00
摘要： A method, system and apparatus for fault protection using a linear feedback shift register are presented. The system comprises a protected register containing a first portion for holding a value for a sequence of numbers and a second portion for other parameters. The system also comprises a linear feedback shift register circuit configured to write the sequence of numbers to the first portion of the protected register. If the written sequence of numbers of the protected register matches a reference sequence of numbers, a rewrite circuit is configured to write the second portion of the protected register.
摘要翻译：提出了一种使用线性反馈移位寄存器进行故障保护的方法，系统和装置。该系统包括受保护的寄存器，其包含用于保存数字序列的值的第一部分和用于其他参数的第二部分。该系统还包括线性反馈移位寄存器电路，其配置为将数字序列写入受保护寄存器的第一部分。如果写入的受保护寄存器的编号顺序与参考序列号匹配，则重写电路被配置为写入受保护寄存器的第二部分。

4. 发明授权

US07791378B1 Phase detector 有权
标题翻译：相位检测器
公开(公告)号：US07791378B1
公开(公告)日：2010-09-07
申请号：US11518115
申请日：2006-09-08
申请人： Pantas Sutardja , Christopher L. Painter , Yingxuan Li , Qing Yang
发明人： Pantas Sutardja , Christopher L. Painter , Yingxuan Li , Qing Yang
IPC分类号： H03D13/00
CPC分类号： H03D13/00
摘要： In one embodiment, a phase detector is provided comprising a first input, a second input, and first circuitry in communication with the first and second inputs, the first circuitry operative to provide an indication of a phase difference between a first signal supplied by the first input and a second signal supplied by the second input, wherein an aberration in one of the first and second signals results in an incorrect indication of phase difference. The phase detector also comprises second circuitry in communication with the first circuitry, the second circuitry operative to provide a correct indication of phase difference despite the aberration in the at least one of the first and second signals. In another embodiment, a differential phase detector is provided.
摘要翻译：在一个实施例中，提供了一种相位检测器，包括第一输入端，第二输入端和与第一和第二输入端通信的第一电路，第一电路用于提供由第一输入端提供的第一信号之间的相位差的指示，输入和由第二输入提供的第二信号，其中第一和第二信号之一中的像差导致相位差的不正确指示。相位检测器还包括与第一电路通信的第二电路，第二电路可操作以提供相位差的正确指示，尽管第一和第二信号中的至少一个信号中存在像差。在另一个实施例中，提供差分相位检测器。

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