公开(公告)号：US5717538A

公开(公告)日：1998-02-10

申请号：US376962

申请日：1995-01-20

申请人： Wayne Leung Cheung ,  Kok-Kia Chew ,  Ju-Hi John Hong

发明人： Wayne Leung Cheung ,  Kok-Kia Chew ,  Ju-Hi John Hong

IPC分类号： G11B5/55 ,  G11B5/596

CPC分类号： G11B5/5526 ,  G11B5/59605

摘要： A servo system accurately detects and processes signals from servo patterns encoded on magnetic storage disks using weighted accumulation, for use in precisely positioning read/write heads with respect to tracks of data contained on the disks. After servo patterns are sensed by reading them from a disk, the resultant servo signals are processed by weighted accumulation circuitry to provide a position signal, which may be decoded to ascertain the positioning error of the read/write head and to apply any corrections that might be needed. In one embodiment, an amplitude position signal is generated by multiplying the servo signal by complementary quadrature weighting signals, then squaring each quadrature output signal, summing them, and taking the square root of the summed signal. In another embodiment, a phase position signal is generated by multiplying the servo signal by complementary quadrature weighting signals, dividing one of the multiplied signals by the other to provide a quotient signal, and then generating a signal corresponding to the arctangent of the quotient signal. The invention may be implemented with analog or digital circuitry. In an analog embodiment, the quadrature output signals are created using multipliers to multiply the servo signal by complementary analog quadrature weighting signals. In a digital embodiment, the output quadrature signals are created using latches to sample the servo signal at predetermined intervals, selectively multiplying sampled signals by predetermined quadrature weighting signals, and accumulating the resulting signals.

摘要翻译： 伺服系统使用加权累加来精确地检测和处理在磁存储盘上编码的伺服模式的信号，用于相对于包含在磁盘上的数据的轨迹精确地定位读/写头。 在通过从盘读取伺服图案之后，通过加权累积电路来处理所得到的伺服信号以提供位置信号，该位置信号可以被解码以确定读/写头的定位误差，并且应用任何可能 需要 在一个实施例中，通过将伺服信号乘以互补正交加权信号，然后对每个正交输出信号进行平方并对其求和并取和相加的信号的平方根来产生幅度位置信号。 在另一个实施例中，通过将伺服信号乘以互补正交加权信号，将相乘的信号之一除以另一个以产生商信号，然后产生对应于商信号的反正切的信号，来产生相位位置信号。 本发明可以用模拟或数字电路来实现。 在模拟实施例中，使用乘法器创建正交输出信号，以通过互补模拟正交加权信号对伺服信号进行乘法运算。 在数字实施例中，使用锁存器产生输出正交信号，以预定间隔对伺服信号进行采样，选择性地将采样信号乘以预定的正交加权信号，并累加所得到的信号。

公开(公告)号：US5999351A

公开(公告)日：1999-12-07

申请号：US709204

申请日：1996-08-27

申请人： David William Albrecht ,  Wayne Leung Cheung ,  Kok-Kia Chew ,  Ju-Hi Hong ,  John Jeffrey Stephenson

发明人： David William Albrecht ,  Wayne Leung Cheung ,  Kok-Kia Chew ,  Ju-Hi Hong ,  John Jeffrey Stephenson

IPC分类号： G11B5/012 ,  G11B5/48 ,  G11B5/596 ,  G11B21/08 ,  G11B5/09

CPC分类号： G11B21/083 ,  G11B5/012 ,  G11B5/4886 ,  G11B5/59605

摘要： A multi-track density direct access storage device is disclosed. In accordance with a preferred embodiment of the present invention, a direct access storage device for data storage within a data processing system comprises a housing, a rotatable spindle, at least one disk, and several heads. The disk is fixedly mounted to the rotatable spindle, and the rotatable spindle is rotated by a motor within the housing. A first disk surface of the disk has a first track density and a second disk surface of the disk has a second track density; wherein the second track density is preferably greater than the first track density. Each of the several heads contains a transducer to read and write information from and to the disk during the disk rotation. Under this configuration, the lower storage density first disk surface is utilized to store data that are frequently accessed while the higher storage density second disk surface is for storage capacity supplementation such that the total data storage capacity of the direct access storage device can be increased without degrading the data-accessing performance.

摘要翻译： 公开了一种多轨密度直接存取存储装置。 根据本发明的优选实施例，用于数据处理系统内的数据存储的直接存取存储装置包括壳体，可旋转主轴，至少一个盘和多个头部。 盘被固定地安装到可旋转的主轴上，并且可旋转的主轴由壳体内的电动机旋转。 盘的第一盘表面具有第一轨道密度，盘的第二盘表面具有第二轨迹密度; 其中第二轨道密度优选地大于第一轨道密度。 在磁盘旋转期间，几个磁头中的每一个都包含一个读取和写入信息的传感器。 在这种配置下，较低的存储密度第一磁盘表面用于存储经常访问的数据，而较高的存储密度第二磁盘表面用于存储容量补充，使得直接存取存储设备的总数据存储容量可以在没有 降低数据访问性能。

公开(公告)号：US06393511B1

公开(公告)日：2002-05-21

申请号：US09246513

申请日：1999-02-09

申请人： David William Albrecht ,  Wayne Leung Cheung ,  Kok-Kia Chew ,  Ju-Hi Hong ,  John Jeffrey Stephenson

发明人： David William Albrecht ,  Wayne Leung Cheung ,  Kok-Kia Chew ,  Ju-Hi Hong ,  John Jeffrey Stephenson

IPC分类号： G06F1200

CPC分类号： G11B21/083 ,  G11B5/012 ,  G11B5/4886 ,  G11B5/59605

摘要： A multi-track density direct access storage device is disclosed. In accordance with a preferred embodiment of the present invention, a direct access storage device for data storage within a data processing system comprises a housing, a rotatable spindle, at least one disk, and several heads. The disk is fixedly mounted to the rotatable spindle, and the rotatable spindle is rotated by a motor within the housing. A first disk surface of the disk has a first track density and a second disk surface of the disk has a second track density; wherein the second track density is preferably greater than the first track density. Each of the several heads contains a transducer to read and write information from and to the disk during the disk rotation. Under this configuration, the lower storage density it first disk surface is utilized to store data that are frequently accessed while the higher storage density second disk surface is for storage capacity supplementation such that the total data storage capacity of the direct access storage device can be increased without degrading the data-accessing performance.

摘要翻译： 公开了一种多轨密度直接存取存储装置。 根据本发明的优选实施例，用于数据处理系统内的数据存储的直接存取存储装置包括壳体，可旋转主轴，至少一个盘和多个头部。 盘被固定地安装到可旋转的主轴上，并且可旋转的主轴由壳体内的电动机旋转。 盘的第一盘表面具有第一轨道密度，盘的第二盘表面具有第二轨迹密度; 其中第二轨道密度优选地大于第一轨道密度。 在磁盘旋转期间，几个磁头中的每一个都包含一个读取和写入信息的传感器。 在该配置下，第一盘表面的较低存储密度用于存储经常访问的数据，而较高存储密度第二磁盘表面用于存储容量补充，使得可以增加直接存取存储设备的总数据存储容量 而不会降低数据访问性能。

公开(公告)号：US06700731B2

公开(公告)日：2004-03-02

申请号：US09872700

申请日：2001-05-31

申请人： Kok-Kia Chew

发明人： Kok-Kia Chew

IPC分类号： G11B5596

CPC分类号： G11B5/59688

摘要： A method, apparatus, and computer program product for linearizing a position error signal of a transducer in a hard disk drive. In one embodiment, a disk including a first plurality of tracks each includes first and second servo bursts defining a track reference line, and a second plurality of the first plurality of tracks on the disk each includes third and fourth servo bursts defining a second plurality of different position offsets from the track reference line of the second plurality of tracks. Each of the second plurality of different position offsets being at a different value than any other position offset. The second plurality is no greater than the first plurality. The second plurality of different position offsets are used for linearizing a position error signal.

摘要翻译： 一种用于线性化硬盘驱动器中的换能器的位置误差信号的方法，装置和计算机程序产品。 在一个实施例中，包括第一多个磁道的磁盘各自包括限定轨道参考线的第一和第二伺服脉冲串，并且磁盘上的第二多个第一多个轨道中的每一个包括第三和第四伺服脉冲串，其限定第二多个 与第二多个轨道的轨道参考线不同的位置偏移。 第二多个不同位置偏移中的每一个处于与任何其它位置偏移不同的值。 第二多个不大于第一多个。 第二多个不同的位置偏移用于线性化位置误差信号。

公开(公告)号：US20080152160A1

公开(公告)日：2008-06-26

申请号：US11998562

申请日：2007-11-30

申请人： Kok-Kia Chew ,  Tianbing Gong ,  Hsu-Kuang Liou

发明人： Kok-Kia Chew ,  Tianbing Gong ,  Hsu-Kuang Liou

IPC分类号： G10K11/16 ,  H04R1/10 ,  H04M1/00 ,  H04H20/71

CPC分类号： H04H20/61 ,  H04H60/80 ,  H04M1/6066 ,  H04M2250/02 ,  H04R1/1083 ,  H04R5/033 ,  H04R2420/07 ,  H04R2499/11

摘要： One aspect disclosed herein pertains to wireless audio transmission to a series of headset receivers in a daisy chain. Another aspect relates to a wireless headset with integrated audio outputs so that amplified audio may be made available to one or more persons without the use of head-phone or ear-bud listening devices. Another aspect pertains to a wireless headset with an integrated mini-loudspeaker for incoming cell phone calls. Another aspect relates to a wireless headset with both noise cancellation and external voice enhancement features. Yet another aspect relates to a wireless device configured to receive an audio or voice signal and to re-transmit the signal. Other aspects, features and embodiments are also disclosed herein.

摘要翻译： 本文公开的一个方面涉及到菊花链中的一系列耳机接收器的无线音频传输。 另一方面涉及具有集成音频输出的无线耳机，使得放大的音频可以在不使用头戴式耳机或耳塞聆听装置的情况下对一个或多个人可用。 另一方面涉及具有用于传入蜂窝电话呼叫的集成微型扬声器的无线耳机。 另一方面涉及具有噪声消除和外部语音增强特征的无线耳机。 另一方面涉及被配置为接收音频或语音信号并重新发送信号的无线设备。 本文还公开了其它方面，特征和实施例。

公开(公告)号：US06762902B2

公开(公告)日：2004-07-13

申请号：US09974698

申请日：2001-10-09

申请人： Kok-Kia Chew

发明人： Kok-Kia Chew

IPC分类号： G11B5596

CPC分类号： G11B5/59627

摘要： A method, apparatus, or product for a rotating disk storage device. In one embodiment, the apparatus includes a disk, a spindle motor that rotates the disk, a transducer, an actuator arm that can move the transducer, and a controller. The controller can control the movement of the actuator arm to move the transducer across the disk surface from a first track to a second track, and determine a position error signal (PES) at one or more positions between the first and second tracks, where the PES includes a non-repeatable disturbance signal. The controller can iteratively generate a disturbance correction signal at the one or more positions based on the PES, combine the disturbance correction signal with the PES to minimize the non-repeatable disturbance signal to provide a corrected PES, and vary, at the one or more positions, the movement of the transducer as a function of the corrected PES.

摘要翻译： 用于旋转盘存储装置的方法，装置或产品。 在一个实施例中，该装置包括盘，旋转盘的主轴马达，换能器，可移动换能器的致动器臂以及控制器。 控制器可以控制致动器臂的移动，以将换能器从第一轨道移动到盘表面到第二轨道，并且在第一和第二轨道之间的一个或多个位置处确定位置误差信号（PES），其中 PES包括不可重复的干扰信号。 控制器可以基于PES在一个或多个位置迭代地产生干扰校正信号，将干扰校正信号与PES组合以最小化不可重复的干扰信号以提供校正的PES，并且在一个或多个 位置，换能器的运动作为校正的PES的函数。

公开(公告)号：US06567233B1

公开(公告)日：2003-05-20

申请号：US09443375

申请日：1999-11-19

申请人： Kok-Kia Chew ,  Gerald Keith Lunn

发明人： Kok-Kia Chew ,  Gerald Keith Lunn

IPC分类号： G11B1904

CPC分类号： G11B19/04 ,  G11B5/59694

摘要： There is a need for low-cost and reliable shock-sensing methods in magnetic hard-disk drives to maintain data integrity when a drive is subjected to external shocks. The present invention uses a novel shock-sensing method that is both reliable and low-cost, using a modified head preamplifier to detect servo fields from adjacent disk surfaces, as well as the disk surface being written or read. Servo fields on adjacent surfaces may be staggered. When a write head is writing data to a data field on a disk surface, a read head may be reading a servo field from an adjacent surface, insuring that the write head is on-track. By staggering the servo fields from surface to surface, shock may be sensed by measuring displacement of read heads on adjacent surfaces between servo sectors on the write surface. In addition, the use of a shock sensor or the like may be eliminated, reducing drive component cost.

摘要翻译： 在磁性硬盘驱动器中需要低成本且可靠的冲击检测方法，以在驱动器受到外部冲击时保持数据完整性。 本发明采用改进的前置放大器来检测来自相邻盘表面的伺服磁场以及磁盘表面被写入或读取的可靠且低成本的新颖的冲击感测方法。 相邻表面上的伺服磁道可能交错。 当写入头将数据写入磁盘表面上的数据字段时，读取头可能正在从相邻表面读取伺服字段，从而确保写入磁头在轨上。 通过将伺服磁场从表面到表面交错，可以通过测量写入表面上的伺服扇区之间的相邻表面上的读取头的位移来感测冲击。 此外，可以消除使用冲击传感器等，从而降低驱动部件成本。

公开(公告)号：US5539592A

公开(公告)日：1996-07-23

申请号：US319383

申请日：1994-10-05

申请人： Willard K. Banks ,  Kok-Kia Chew ,  Donald R. Gillis ,  Gordon J. Smith

发明人： Willard K. Banks ,  Kok-Kia Chew ,  Donald R. Gillis ,  Gordon J. Smith

IPC分类号： G11B19/04 ,  G11B33/10 ,  G11B15/46 ,  G01B5/28 ,  G01R33/12 ,  G11B5/60

CPC分类号： G11B33/10 ,  G11B19/04

摘要： A system for predicting the failure of a storage unit, such as a disk drive. In a most general sense, the inventive system includes a first mechanism (20, 22, 24) for moving an element (16) over a surface (12) which is moving relative to the element (16). The first mechanism includes an arm (18, 20) for supporting the element (16) over the surface (12) and a motor (24) connected to the arm (18, 20). A position error detector (42) is included for detecting a change in torque applied to the motor (24) due to friction between the element (16) and the surface (12). The position error detector (42) provides a signal in response to changes in torque which is processed to predict a head disk interaction or failure of the storage system. In a particular embodiment, the position error detector (42) senses a change in a lateral force applied to the element (12) in response to a change in friction between the surface and the element. In a typical application, the storage unit is a disk drive, the surface is a disk on which a storage medium is disposed and the element is a magnetic head. In an alternative embodiment, changes in friction between the head and the medium are sensed by sensing changes in the motor current required to maintain disk speed.

摘要翻译： 一种用于预测存储单元（例如磁盘驱动器）的故障的系统。 在最普遍的意义上，本发明的系统包括用于将元件（16）移动到相对于元件（16）移动的表面（12）上的第一机构（20,22,24）。 第一机构包括用于在表面（12）上支撑元件（16）的臂（18,20）和连接到臂（18,20）的马达（24）。 包括位置误差检测器（42），用于检测由于元件（16）和表面（12）之间的摩擦而施加到电动机（24）的转矩变化。 位置误差检测器（42）提供响应于转矩变化的信号，其被处理以预测存储系统的磁盘盘相互作用或故障。 在特定实施例中，位置误差检测器（42）响应于表面和元件之间的摩擦力的变化而感测施加到元件（12）的横向力的变化。 在典型的应用中，存储单元是磁盘驱动器，表面是其上设置有存储介质的盘，并且元件是磁头。 在替代实施例中，通过检测维持磁盘速度所需的电动机电流的变化来感测头部和介质之间的摩擦变化。