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    • 5. 发明授权
    • Method and system for automatic time base adjustment for disk drive servo controllers
    • 磁盘驱动器伺服控制器自动时基调整方法及系统
    • US07492545B1
    • 2009-02-17
    • US10384992
    • 2003-03-10
    • Michael R. SpaurRaymond A. Sandoval
    • Michael R. SpaurRaymond A. Sandoval
    • G11B5/00
    • G11B5/59616
    • A system and method for a servo controller (SC) used in an embedded disk controller for adjusting stored servo skew values based on measured skew values is provided. The system includes, a servo timing controller, wherein the servo timing controller includes a first register that stores measured servo skew values at a given time; a first set of registers that receive stored skew values and the measured skew values; and firmware that adjusts the skew values based on the measured skew values measured by a reference timer. The process includes, measuring actual skew values during a head change in a read operation; comparing the measured skew values with the stored skew values; adjusting the skew value based on the comparison; and adjusting a servo field timer based on the adjusted skew value.
    • 提供了一种用于在嵌入式盘控制器中使用的伺服控制器(SC)的系统和方法,用于基于测量的歪斜值来调整存储的伺服歪斜值。 该系统包括伺服定时控制器,其中伺服定时控制器包括在给定时间存储测量的伺服偏移值的第一寄存器; 接收存储的偏斜值和测量的偏斜值的第一组寄存器; 以及基于由参考定时器测量的测量的偏差值来调整偏斜值的固件。 该过程包括:在读取操作期间测量头部变化期间的实际偏斜值; 将测量的偏差值与存储的偏差值进行比较; 根据比较调整偏差值; 以及基于所调整的偏差值来调整伺服场定时器。
    • 7. 发明授权
    • Method and system for head position control in embedded disk drive controllers
    • 嵌入式磁盘驱动器控制器中磁头位置控制的方法和系统
    • US07139150B2
    • 2006-11-21
    • US10793207
    • 2004-03-04
    • Michael R. SpaurRaymond A. Sandoval
    • Michael R. SpaurRaymond A. Sandoval
    • G11B5/596
    • G11B5/59655G11B5/59605
    • A track follow controller (“TFC”) in an embedded disk controller is provided. The TFC includes, a position error calculator that determines a linear position of a head based on burst format and determines a position error based on the linear position and a target position; and a position error output compensator that receives a position error signal from the position error calculator and filters the position error signal. The burst format includes at least a first burst pair format that includes x bursts and a second burst pair format that includes y bursts, where x is unequal to y. The position error calculator includes a burst selector that can select a burst pair; a linear position calculator that calculates head linear position based on burst pair format; and an error calculator that determines the position error based on the linear position and target position.
    • 提供嵌入式磁盘控制器中的跟踪控制器(“TFC”)。 TFC包括:位置误差计算器,其基于突发格式确定头部的线性位置,并基于线性位置和目标位置确定位置误差; 以及位置误差输出补偿器,其从位置误差计算器接收位置误差信号并对位置误差信号进行滤波。 突发格式包括至少第一突发队列格式,其包括x个突发和包括y个突发的第二突发队列格式,其中x不等于y。 位置误差计算器包括可以选择突发对的脉冲串选择器; 线性位置计算器,其基于突发对格式计算头部线性位置; 以及基于线性位置和目标位置确定位置误差的误差计算器。
    • 10. 发明授权
    • Digital processing of pilot-tone amplitudes
    • 导频音幅度的数字处理
    • US06590733B1
    • 2003-07-08
    • US09474175
    • 1999-12-29
    • Rosser S. WilsonMichael R. Spaur
    • Rosser S. WilsonMichael R. Spaur
    • G11B5596
    • G11B5/5921
    • In a system having an input signal set with at least two signals having mutually exclusive frequencies f1 and f2 being part of the input signal set, whose amplitude is represented in an input digital representation, the amplitudes of each of the at least two signals are digitally represented. A digital representation of the frequency of each of the signals is derived. A digital representation of the sine function and of the cosine function of the frequency of each of the signals is derived based on the digital representation of the frequency. The digital representations of each of the sine and cosine functions is mixed with the input digital representation to derive digital representations of the sine and cosine functions of each of the signals. The digital representations of the sine and cosine functions of each of the signals are processed to derive a digital representation of the amplitude of each of the signals.
    • 在具有输入信号的系统中,具有至少两个具有相互排斥的频率的信号的信号,f1和f2是输入信号组的一部分,其幅度以输入数字表示形式表示,所述至少两个信号中的每一个的幅度是数字的 代表。 导出每个信号的频率的数字表示。 基于频率的数字表示,导出每个信号的频率的正弦函数和余弦函数的数字表示。 每个正弦和余弦函数的数字表示与输入数字表示混合,以导出每个信号的正弦和余弦函数的数字表示。 每个信号的正弦和余弦函数的数字表示被处理以导出每个信号的振幅的数字表示。