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1. 发明授权

US4285015A Method and apparatus for locating a movable servo controlled member during position signal drop-out 失效
标题翻译：在位置信号脱落期间定位可动伺服控制构件的方法和装置
公开(公告)号：US4285015A
公开(公告)日：1981-08-18
申请号：US102304
申请日：1979-12-10
申请人： Andrew M. Rose , Frank J. Sordello , James J. Touchton
发明人： Andrew M. Rose , Frank J. Sordello , James J. Touchton
IPC分类号： G05D3/12 , G11B5/55 , G11B7/085 , G11B21/08
CPC分类号： G11B7/08541 , G11B21/085 , G11B5/5552
摘要： As an aid in counting servo tracks in a position servo system, a position window detector (30) which normally provides coarse and fine pulses to counting logic (53) also provides fine pulses to a reset switch (45) of a tachometer signal integrator means (33), resetting the integrator once for each track. In the event of position signal drop-out wherein coarse pulses are not properly generated, a threshold detection means (43) senses when the output of the integrator reaches a threshold level and produces a threshold reached signal which is transmitted to counting logic means (53) for incrementing a track counter (61).
摘要翻译：作为对位置伺服系统中的伺服磁道进行计数的辅助，通常向计数逻辑（53）提供粗略和精细脉冲的位置窗口检测器（30）还向转速计信号积分器装置的复位开关（45）提供精细脉冲（33），为每个轨道重置积分器一次。在没有适当地产生粗略脉冲的位置信号丢失的情况下，阈值检测装置（43）检测积分器的输出何时达到阈值电平并产生阈值到达信号，该信号被发送到计数逻辑装置（53 ）用于增加轨道计数器（61）。

2. 发明授权

US4184108A Self-regulating electronic tachometer 失效
标题翻译：自调节电子转速计
公开(公告)号：US4184108A
公开(公告)日：1980-01-15
申请号：US854299
申请日：1977-11-23
申请人： Frank J. Sordello , James J. Touchton
发明人： Frank J. Sordello , James J. Touchton
IPC分类号： G01P3/42 , G05B19/23 , G05D3/12 , G05D13/62 , G11B5/55 , G11B21/10 , G05B5/01
CPC分类号： G05B19/232 , G11B5/5547 , G05B2219/37388 , G05B2219/41163
摘要： An electronic tachometer comprising an integrator having its output coupled to a variable gain amplifier and responsive to an input signal representative of the acceleration of a moveable load, such as a head assembly of a disk drive, for producing a coarse velocity signal at the output of the variable gain amplifier indicative of the load velocity, a tachometer gain correction circuit including another integrator coupled to receive the coarse velocity signal to produce a coarse distance signal indicative of distance traveled by the load and means for combining the coarse distance signal with a reference distance signal to produce a distance error signal which functions to adjust the gain of the variable gain amplifier so as to vary the coarse velocity signal to make the coarse distance signal equal to the reference distance signal, and accumulative error compensation means coupled to receive a gain indicative signal derived from the distance error signal to produce a signal input to the tachometer integrator which compensates for accumulative error in the tachometer output, whereby the tachometer accurately indicates load velocity.
摘要翻译：一种电子转速计，包括积分器，其输出端耦合到可变增益放大器，并且响应于代表可移动负载的加速度的输入信号，例如磁盘驱动器的磁头组件，用于在输出端产生粗速度信号所述可变增益放大器指示所述负载速度;转速计增益校正电路，包括被耦合以接收所述粗略速度信号的另一个积分器，以产生指示所述负载行进的距离的粗略距离信号;以及用于将所述粗距离信号与参考距离信号以产生距离误差信号，其用于调整可变增益放大器的增益，以便改变粗略速度信号以使粗距离信号等于参考距离信号，并且累加误差补偿装置被耦合以接收增益指示从距离误差信号得到的信号，产生输入到t的信号他的转速计积分器补偿了转速计输出中的累积误差，从而转速表精确地显示了负载速度。

3. 发明授权

US4122501A System for recording and reading back data on a recording media 失效
标题翻译：用于在记录介质上记录和读回数据的系统
公开(公告)号：US4122501A
公开(公告)日：1978-10-24
申请号：US750204
申请日：1976-12-13
申请人： Frank J. Sordello , Robert L. Cloke
发明人： Frank J. Sordello , Robert L. Cloke
IPC分类号： G11B20/14 , G11B20/16 , H03K3/02 , H03L7/06 , H03L7/08 , H03L7/14 , G11B5/09
CPC分类号： G11B20/16
摘要： A system for detecting data from and recording data on a recording media whereby a single clocking signal generator is utilized for generating the clocking signal both during the recording of data on and the reading of data from the recording media.
摘要翻译：一种用于在记录介质上检测数据和记录数据的系统，由此在记录数据和从记录介质读取数据期间，单个时钟信号发生器用于产生时钟信号。

4. 发明授权

US4051423A Servo system with feedback signal compensation 失效
标题翻译：具有反馈信号补偿的伺服系统
公开(公告)号：US4051423A
公开(公告)日：1977-09-27
申请号：US656897
申请日：1976-02-10
申请人： James J. Touchton , John Cuda , Frank J. Sordello
发明人： James J. Touchton , John Cuda , Frank J. Sordello
IPC分类号： G05D3/12 , G05B11/36 , G05D3/14 , G05B5/01
CPC分类号： G05D3/1445
摘要： A signal compensator for a position servo loop system to attenuate the position error signal and provide stability at a larger band width by limiting the position actuator current in selected frequency ranges.

5. 发明授权

US4006394A Coarse and fine control for position servo 失效
标题翻译：伺服精度高精度控制
公开(公告)号：US4006394A
公开(公告)日：1977-02-01
申请号：US524766
申请日：1974-11-18
申请人： John Cuda , Frank J. Sordello
发明人： John Cuda , Frank J. Sordello
IPC分类号： G05B19/39 , G05D3/14 , G11B5/55 , G05B11/18
CPC分类号： G05B19/39 , G05D3/1436 , G11B5/5552 , G05B2219/42171
摘要： A closed loop servo system for positioning a head relative to a magnetic recording element wherein track crossings are normally utilized to generate a feedback signal to the servo for positioning the head and wherein for a precise indication of head positioning between track crossings the velocity of movement of the head is integrated and fed into the servo system to provide a fine position signal.
摘要翻译：一种用于相对于磁记录元件定位磁头的闭环伺服系统，其中通常使用磁道交叉来产生用于定位磁头的伺服机构的反馈信号，并且其中，为了精确指示轨迹之间的磁头定位，头部被集成并馈送到伺服系统中以提供精细位置信号。

6. 发明授权

US4796109A Method for testing components of a magnetic storage system 失效
标题翻译：用于测试磁存储系统的组件的方法
公开(公告)号：US4796109A
公开(公告)日：1989-01-03
申请号：US180659
申请日：1988-03-28
申请人： Frank J. Sordello , Andrew M. Rose
发明人： Frank J. Sordello , Andrew M. Rose
IPC分类号： G11B5/00 , G11B5/455 , G11B20/10 , G11B20/18 , G11B5/09 , G11B27/36
CPC分类号： G11B20/10527 , G11B20/182 , G11B5/00 , G11B5/455
摘要： A method for measuring bit shift and other characteristics indicative of the performance of a magnetic storage system, particularly for a system employing a thin-film magnetic head. In a preferred embodiment, complementary patterns are written many times around a circular track of a magnetic disk, each pattern including relatively closely spaced magnetic transitions as well as relatively widely spaced magnetic transitions. The relatively widely spaced transitions are chosen so as to be substantially unaffected by any other transitions. Measurements are made with reference to these widely spaced transitions and averaged for the many patterns recorded in the track so as to rapidly provide highly reliable measurements indicative of system performance.
摘要翻译：一种用于测量位移和表示磁存储系统的性能的其它特性的方法，特别是对于采用薄膜磁头的系统。在优选实施例中，互补图案围绕磁盘的圆形轨道写入许多次，每个图案包括相对紧密间隔的磁转变以及相对较宽的间隔的磁转变。相对较宽的间隔的转变被选择为基本上不受任何其它转变的影响。参考这些广泛间隔的转换进行测量，并对记录在轨道中的许多模式进行平均，以便快速提供指示系统性能的高度可靠的测量。

7. 发明授权

US4612586A Method for measuring timing asymmetry in a magnetic storage system 失效
标题翻译：用于测量磁存储系统中的时序不对称的方法
公开(公告)号：US4612586A
公开(公告)日：1986-09-16
申请号：US617431
申请日：1984-06-05
申请人： Frank J. Sordello , Andrew M. Rose
发明人： Frank J. Sordello , Andrew M. Rose
IPC分类号： G11B20/10 , G11B5/455 , G11B20/18 , G11B27/36 , G11B5/09 , G11B15/02
CPC分类号： G11B20/182
摘要： A method for measuring bit shift, timing asymmetry and other characteristics indicative of the performance of a magnetic storage system, particularly for a system employing a thin-film magnetic head. In a preferred embodiment, complementary patterns are written many times around a circular track of a magnetic disk, each pattern including relatively closely spaced magnetic transitions as well as relatively widely spaced magnetic transitions. The relatively widely spaced transitions are chosen so as to be substantially unaffected by any other transitions. Measurements are made with reference to these widely spaced transitions and averaged for the many patterns recorded in the track so as to rapidly provide highly reliable measurements indicative of system performance.
摘要翻译：一种用于测量位移，定时不对称性和指示磁存储系统的性能的其它特性的方法，特别是对于采用薄膜磁头的系统。在优选实施例中，互补图案围绕磁盘的圆形轨道写入许多次，每个图案包括相对紧密间隔的磁转变以及相对较宽的间隔的磁转变。相对较宽的间隔的转变被选择为基本上不受任何其它转变的影响。参考这些广泛间隔的转换进行测量，并对记录在轨道中的许多模式进行平均，以便快速提供指示系统性能的高度可靠的测量。

8. 发明授权

US4581664A Disk accessing circuitry 失效
标题翻译：磁盘访问电路
公开(公告)号：US4581664A
公开(公告)日：1986-04-08
申请号：US534437
申请日：1983-09-21
申请人： Frank J. Sordello , Andrew M. Rose
发明人： Frank J. Sordello , Andrew M. Rose
IPC分类号： G11B21/10 , G05D3/12 , G11B5/55 , G11B21/02 , G11B21/08
CPC分类号： G11B5/5547 , G11B21/02
摘要： A disk storage system is disclosed comprising a rotatable disk, a cooperating magnetic head, positioning apparatus for positioning the head at different radial positions of the disk for reading and/or writing data on the disk, a baseplate for supporting the above, and control circuitry for preventing oscillation build-up in the baseplate from deleteriously interfering with system performance. The control circuitry is constructed and arranged to control the timing of head positioning operations so as to inhibit the reinforcement of baseplate oscillations.
摘要翻译：公开了一种磁盘存储系统，其包括可旋转磁盘，协作磁头，用于将磁头定位在盘的不同径向位置的定位装置，用于在盘上读取和/或写入数据，用于支持上述的基板和控制电路用于防止基板中的振荡积聚，从而有害地干扰系统性能。控制电路被构造和布置成控制头部定位操作的定时，以便抑制底板振荡的加强。

9. 发明授权

US4188646A Sectorized data path following servo system 失效
标题翻译：跟随伺服系统的扇区数据路径
公开(公告)号：US4188646A
公开(公告)日：1980-02-12
申请号：US910257
申请日：1978-05-30
申请人： Frank J. Sordello , Edward R. Darrah , James J. Touchton
发明人： Frank J. Sordello , Edward R. Darrah , James J. Touchton
IPC分类号： G11B23/30 , G05D3/12 , G11B5/596 , G11B21/10
CPC分类号： G11B5/59616
摘要： A servo system for accurately positioning a transducer relative to data paths on a recording medium by detecting sync and servo signals from two parallel abutting servo tracks sharing a common longitudinal boundary within circumferentially spaced sectors of the medium. Within each sector of the recording medium, two servo waveforms of different frequencies in two abutting servo tracks are preceded by a sync reference waveform of the same frequency in both servo tracks which is used as a reference for a phase locked oscillator, connected to the transducer, generating a pair of modulation signals that are to be mixed with transducer signals from both servo waveforms. A pair of servo channels are provided for receiving the pair of modulation signals and the servo signals for deriving an imbalance error signal representing deviation of the transducer from the center line of a data path, which is the projection from the sectors of the common longitudinal boundary between servo tracks. The imbalance error signal is used to center the transducer on the data path.
摘要翻译：一种伺服系统，用于通过从介质周向间隔开的共享共同纵向边界的两个平行的邻接伺服轨道检测同步和伺服信号，来相对于记录介质上的数据路径精确地定位换能器。在记录介质的每个扇区内，在两个邻接的伺服磁道中的两个不同频率的伺服波形之前是两个伺服磁道中相同频率的同步参考波形，该同步参考波形用作锁相振荡器的基准，连接到换能器产生要与来自两个伺服波形的换能器信号混合的一对调制信号。提供一对伺服通道用于接收一对调制信号和伺服信号，用于导出表示换能器与数据路径的中心线偏离的不平衡误差信号，该数据路径是来自公共纵向边界的扇区的投影伺服磁道之间。不平衡误差信号用于将传感器置于数据通路上。

10. 发明授权

US4003000A Sinusoidal oscillator with electronically variable frequency 失效
标题翻译：具有电子变频的正弦振荡器
公开(公告)号：US4003000A
公开(公告)日：1977-01-11
申请号：US581091
申请日：1975-05-27
申请人： Frank J. Sordello , Robert L. Cloke
发明人： Frank J. Sordello , Robert L. Cloke
IPC分类号： H03B1/00 , H03B5/12 , H03B5/24 , H03B3/04
CPC分类号： H03B5/24 , H03B5/1203 , H03B5/1231 , H03B5/124 , H03B2200/0068 , H03B2201/02
摘要： A sinusoidal oscillator including means for electronically varying the frequency of oscillation by altering the phase angle of the amplifier circuit phase shift.
摘要翻译：一种正弦振荡器，包括用于通过改变放大器电路相移的相位角电子地改变振荡频率的装置。

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