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1. 发明授权

US4970609A Clocking method and apparatus for use with partial response coded binary data 失效
标题翻译：用于部分响应编码二进制数据的时钟方法和装置
公开(公告)号：US4970609A
公开(公告)日：1990-11-13
申请号：US258937
申请日：1988-10-17
申请人： Earl A. Cunningham , Townsend H. Porter, Jr. , James W. Rae
发明人： Earl A. Cunningham , Townsend H. Porter, Jr. , James W. Rae
IPC分类号： G11B20/14 , H03L7/08 , H03L7/087 , H04L7/033
CPC分类号： H04L7/033 , H04L7/007
摘要： Clocking of Class IV partial response coded binary data is provided by way of circuit means that includes two analog threshold detectors. One detector is responsive to the analog read signal's positive-going amplitude corssing a a preset positive threshold value. The other detector is responsive to the read signal's negative-going amplitude crossing a preset negative value. The time of occurrence of both detector crossing transitions is phase-compared to a clock signal, and a phase error signal is generated for each detector, if a phase error exists. The two phase error signals are integrated by the use of a loop filter. The integrated phase error signal is then used to adjust the phase of a clock signal generator. The output of the clock signal generator is used to accurately clock, and to enable accurate recover of, the binary data that was originally encoded and written in accordance with the Class IV partial responsive coding convention.

2. 发明授权

US5442492A Data recovery procedure using DC offset and gain control for timing loop compensation for partial-response data detection 失效
标题翻译：使用DC偏移和增益控制的数据恢复程序用于部分响应数据检测的定时环路补偿
公开(公告)号：US5442492A
公开(公告)日：1995-08-15
申请号：US85069
申请日：1993-06-29
申请人： Earl A. Cunningham , Joe M. Poss
发明人： Earl A. Cunningham , Joe M. Poss
IPC分类号： G11B5/00 , G11B5/012 , G11B5/09 , G11B20/10 , G11B20/14 , G11B20/18
CPC分类号： G11B20/10009 , G11B20/1419 , G11B5/09 , G11B2005/0016 , G11B5/012
摘要： Apparatus and method of data recovery are provided for data detection in a partial-response (PR) data channel. The PR data channel includes an analog-to-digital converter (ADC) for providing digital samples of a readback data signal and a voltage controlled oscillator (VCO) timing control coupled to the ADC. A data recovery procedure (DRP) is established responsive to a detected readback error. Using amplitude offset circuitry, amplitude of the readback data signal is selectively adjusted responsive to the detected readback error; and using gain control, a correction current applied to the VCO timing control is changed responsive to the detected readback error.
摘要翻译：提供数据恢复的装置和方法用于部分响应（PR）数据信道中的数据检测。 PR数据通道包括用于提供耦合到ADC的回读数据信号和压控振荡器（VCO）定时控制的数字样本的模拟 - 数字转换器（ADC）。响应于检测到的回读错误建立数据恢复过程（DRP）。使用幅度偏移电路，响应于检测到的回读误差来选择性地调节回读数据信号的幅度; 并且使用增益控制，响应于检测到的回读误差改变施加到VCO定时控制的校正电流。

3. 发明授权

US5245487A Transducer head for rigid disk drive 失效
标题翻译：硬盘驱动器用传感器头
公开(公告)号：US5245487A
公开(公告)日：1993-09-14
申请号：US784067
申请日：1991-10-30
申请人： Earl A. Cunningham
发明人： Earl A. Cunningham
IPC分类号： G11B5/55 , G11B5/596
CPC分类号： G11B5/596 , G11B5/5526
摘要： A dedicated servo transducer head for phase skewed position information signals in servo information tracks of a rigid magnetic disk drive unit has a width spanning up to eight servo information tracks in order to overcome problems in gain irregularity caused by abrupt phase jumps between tracks. An embodiment of the invention includes a track reading surface that varies in sensitivity across the width of the head to avoid gain loss during incremental radial movement with head edges overlying track edge fringes.
摘要翻译：用于刚性磁盘驱动单元的伺服信息轨道中的相位偏移位置信息信号的专用伺服传感器头具有跨越多达八个伺服信息轨迹的宽度，以克服由轨迹之间的突然相位跳跃引起的增益不均匀性的问题。本发明的实施例包括轨迹读取表面，其在头部宽度上的灵敏度变化，以避免增量径向运动期间的增益损失，头部边缘覆盖轨迹边缘条纹。

4. 发明授权

US4305080A Compensating driver circuit for thermal print head 失效
标题翻译：热敏打印头补偿驱动电路
公开(公告)号：US4305080A
公开(公告)日：1981-12-08
申请号：US58593
申请日：1979-07-18
申请人： Earl A. Cunningham , David E. Cutshall , Gerald M. Heiling , Ronald L. Soderstrom , James M. Thompson
发明人： Earl A. Cunningham , David E. Cutshall , Gerald M. Heiling , Ronald L. Soderstrom , James M. Thompson
IPC分类号： B41J2/36 , B41J2/365 , G01D15/10 , H05B1/00
CPC分类号： B41J2/3555 , B41J2/365
摘要： A driver circuit for a thermal printing element varies the power applied to the element, depending upon its recent history of energization, in order to maintain uniform print density desprite temperature variation in the element. A capacitor charges and discharges to measure time intervals since the last element energization to control the voltage applied by an output transistor.
摘要翻译：用于热敏打印元件的驱动器电路根据其最近的通电历史来改变施加到元件的功率，以便保持元件中均匀的印刷密度精确的温度变化。电容器进行充电和放电，以测量自最后一个元件通电的时间间隔，以控制由输出晶体管施加的电压。

5. 发明授权

US6035351A Storage of user defined type file data in corresponding select physical format 失效
标题翻译：以相应的选择物理格式存储用户定义的类型文件数据
公开(公告)号：US6035351A
公开(公告)日：2000-03-07
申请号：US184417
申请日：1994-01-21
申请人： Russell Allen Billings , Dana Henry Brown , Earl A. Cunningham , Richard Greenberg , Hal Hjalmar Ottesen
发明人： Russell Allen Billings , Dana Henry Brown , Earl A. Cunningham , Richard Greenberg , Hal Hjalmar Ottesen
IPC分类号： G11B5/09 , G06F3/06 , G11B5/012 , G11B5/55 , G11B5/596 , G11B7/0037 , G11B19/20 , G11B19/247 , G11B20/10 , G11B20/12 , G11B21/00 , G11B21/02 , G11B21/04 , G11B27/00 , G11B27/10 , H04N5/781 , H04N7/173 , G06F13/10
CPC分类号： G06F3/0601 , G11B19/20 , G11B19/247 , G11B20/10 , G11B20/12 , G11B20/1258 , G11B21/00 , G11B21/02 , G11B21/04 , G11B27/002 , G11B27/105 , G11B5/012 , G11B5/5521 , G11B5/5526 , G11B5/5965 , H04N7/17336 , G06F2003/0692 , G11B2220/20 , G11B7/0037 , H04N5/781
摘要： Storing data on a data processing system is done upon generation of a data file by displaying a user interface allowing user selection of storage criteria for the data file. Responsive to user selection of storage criteria for a file determining a physical format type for the file from a plurality of available physical format types. Then the file is stored on a direct access storage device as at least a first record conforming with the determined physical format type.
摘要翻译：通过显示允许用户选择数据文件的存储标准的用户界面来生成数据文件，在数据处理系统上存储数据。响应于用户选择用于从多个可用物理格式类型确定文件的物理格式类型的文件的存储标准。然后将文件作为至少符合所确定的物理格式类型的第一记录存储在直接访问存储设备上。

6. 发明授权

US4860138A Differentially sensitive single track read/write head design with improved biasing 失效
标题翻译：差分敏感的单轨读/写头设计具有改进的偏置
公开(公告)号：US4860138A
公开(公告)日：1989-08-22
申请号：US119501
申请日：1987-11-12
申请人： Albert W. Vinal , Earl A. Cunningham
发明人： Albert W. Vinal , Earl A. Cunningham
IPC分类号： G11B5/127 , G11B5/39
CPC分类号： G11B5/3964 , G11B5/1278 , G11B5/3903 , G11B5/3967
摘要： A simplified structure for a single track read/write head design is disclosed. The design incorporates a simplified write coil structure and an improved and simplified combined magnetic bias and sensor current structure. The active sensing current is utilized both to create an anti-parallel magnetic vector couple in a coupled film magneto resistive sensor and to magnetically bias or torque the anti-parallel couple so that magnetization within the sensor films lies at an angle with the easy magnetic axis. Sensor current is fed in series through an electro-magnetic coil wrapped about the magneto resistive sensor so that sense current simultaneously creates an anti-parallel magnetic vector couple in the sensor and generates an electromagnetic bias field to torque the anti-parallel couple at an angle with the easy axis of magnetization. An improved spirally laid-out planar deposited writing flux coil is positioned about the writing electromagnetic core which greatly simplifies fabrication steps in making the device.

7. 发明授权

US4458280A Servo writing transducer design and writing method 失效
标题翻译：伺服写字传感器的设计和写作方法
公开(公告)号：US4458280A
公开(公告)日：1984-07-03
申请号：US339940
申请日：1982-01-18
申请人： Earl A. Cunningham
发明人： Earl A. Cunningham
IPC分类号： G11B5/012 , G11B5/187 , G11B5/31 , G11B5/596 , G11B5/12 , G11B5/22
CPC分类号： G11B5/012 , G11B5/3116 , G11B5/59633
摘要： A servo writing transducer is shown having transverse side surfaces of the pole pieces adjoining the gap formed to optimize compression of the fringe field at one transverse side to reduce the dead band intermediate servo tracks. The existence of a wider fringe field region at the opposite transverse side is without consequence since the servo writing procedure is to first write the farthest track at the transducer side at which the compressed field occurs followed by each succeeding, adjoining servo track causing the information written in the wide fringe field to be overwritten by the next track.
摘要翻译：示出了伺服写入传感器，其具有与形成的间隙邻接的极片的横向侧表面，以优化在一个横向侧处的边缘场的压缩，以减少死区中间伺服轨迹。在相反的横向侧存在更宽的边缘场区域是没有结果的，因为伺服写入过程是首先在压缩场发生的换能器侧首先写入最后的轨道，随后每个后续的邻接的伺服轨迹写入信息在宽边缘区域被下一个轨道覆盖。

8. 发明授权

US06040955A Self servo writing file 失效
标题翻译：自动伺服写入文件
公开(公告)号：US06040955A
公开(公告)日：2000-03-21
申请号：US287477
申请日：1994-08-08
申请人： Dana Henry Brown , Thomas Charles Christensen , Earl A. Cunningham , Wayne A. Rogelstad
发明人： Dana Henry Brown , Thomas Charles Christensen , Earl A. Cunningham , Wayne A. Rogelstad
IPC分类号： G11B5/596 , G11B27/32 , G11B21/10
CPC分类号： G11B5/59633 , G11B27/322
摘要： A self servo writing file and method for writing servo patterns in a direct access storage device are provided. First servo information is written on a data storage media at a first crash stop. The transducer heads are moved offset from the written servo information while reading the last written servo information until the detected servo signal equals a predetermined value. Then servo information is written on the data storage media responsive to the detected servo signal equal to the predetermined value. The moving and writing steps are sequentially repeating until a second crash stop is reached. A quad-burst servo amplitude pattern or phase pattern can be used for the servo information. The servo writing method is adapted easily for many different servo options. When the file uses a hybrid servo or sector servo, the other surfaces can be written by duplicating the servo bursts with a high bandwidth servo system of the file. Alternatively, the servo writing steps can be repeated for each of the other surfaces for providing head dependent pitch. Variable track pitch can be provided by selectively varying the predetermined value compared with the detected servo signal.
摘要翻译：提供一种用于在直接存取存储装置中写入伺服模式的自伺服写入文件和方法。第一伺服信息在第一次碰撞停止时被写入数据存储介质。当读取最后写入的伺服信息直到检测到的伺服信号等于预定值时，传感器头与写入的伺服信息偏移。然后根据检测到的等于预定值的伺服信号将伺服信息写入数据存储介质上。顺序重复移动和写入步骤，直到达到第二次碰撞停止。伺服信息可以使用四脉冲串伺服幅度模式或相位模式。伺服写入方式适用于许多不同的伺服选项。当文件使用混合伺服或扇区伺服时，其他表面可以通过用文件的高带宽伺服系统复制伺服脉冲串来写入。或者，可以针对每个其他表面重复伺服写入步骤，以提供与头部相关的音调。可以通过与检测到的伺服信号相比选择性地改变预定值来提供可变轨道间距。

9. 发明授权

US5949603A Self servo writing file using the widest head 有权
标题翻译：自动写入文件使用最宽的头
公开(公告)号：US5949603A
公开(公告)日：1999-09-07
申请号：US224792
申请日：1999-01-04
申请人： Dana Henry Brown , Thomas Charles Christensen , Earl A. Cunningham , Wayne A. Rogelstad
发明人： Dana Henry Brown , Thomas Charles Christensen , Earl A. Cunningham , Wayne A. Rogelstad
IPC分类号： G11B5/596 , G11B27/32 , G11B21/10
CPC分类号： G11B5/59633 , G11B27/322
摘要： A self servo writing file and method for writing servo patterns in a direct access storage device are provided. First servo information is written on a data storage media at a first crash stop. The transducer heads are moved offset from the written servo information while reading the last written servo information until the detected servo signal equals a predetermined value. Then servo information is written on the data storage media responsive to the detected servo signal equal to the predetermined value. The moving and writing steps are sequentially repeated until a second crash stop is reached. A quad-burst servo amplitude pattern or phase pattern can be used for the servo information. The servo writing method is adapted easily for many different servo options. When the file uses a hybrid servo or sector servo, the other surfaces can be written by duplicating the servo bursts with a high bandwidth servo system of the file. Alternatively, the servo writing steps can be repeated for each of the other surfaces for providing head dependent pitch. Variable track pitch can be provided by selectively varying the predetermined value compared with the detected servo signal.
摘要翻译：提供一种用于在直接存取存储装置中写入伺服模式的自伺服写入文件和方法。第一伺服信息在第一次碰撞停止时被写入数据存储介质。当读取最后写入的伺服信息直到检测到的伺服信号等于预定值时，传感器头与写入的伺服信息偏移。然后根据检测到的等于预定值的伺服信号将伺服信息写入数据存储介质上。顺序重复移动和写入步骤，直到达到第二次碰撞停止。伺服信息可以使用四脉冲串伺服幅度模式或相位模式。伺服写入方式适用于许多不同的伺服选项。当文件使用混合伺服或扇区伺服时，其他表面可以通过用文件的高带宽伺服系统复制伺服脉冲串来写入。或者，可以针对每个其他表面重复伺服写入步骤，以提供与头部相关的音调。可以通过与检测到的伺服信号相比选择性地改变预定值来提供可变轨道间距。

10. 发明授权

US5617289A Magnetic reinitialization of thin film magnetoresistive reproducing heads at the suspension level of media drive manufacturing 失效
标题翻译：在介质驱动器制造的悬挂级别的薄膜磁阻再现磁头的磁性重新初始化
公开(公告)号：US5617289A
公开(公告)日：1997-04-01
申请号：US463391
申请日：1995-06-05
申请人： Samir E. Abboud , Nickolas C. Apuzzo , Jeffrey B. Brown , Earl A. Cunningham , David M. Hannon , Raymond P. Mallette , Paul S. Tyler , Steven H. Voss , Albert J. Wallash
发明人： Samir E. Abboud , Nickolas C. Apuzzo , Jeffrey B. Brown , Earl A. Cunningham , David M. Hannon , Raymond P. Mallette , Paul S. Tyler , Steven H. Voss , Albert J. Wallash
IPC分类号： G11B5/00 , G11B5/39 , G11B5/465 , G11B5/48 , H01L43/12 , H01F13/00
CPC分类号： G11B5/3903 , G11B5/465 , G11B5/4886 , G11B2005/0008 , Y10T29/49034
摘要： The magnetic states of MR reproducing heads are reinitialized during media drive manufacturing by applying initializing magnetic fields to the transducers after they have been manufactured and incorporated into media drive assemblies.
摘要翻译：磁记录磁头的磁状态在介质驱动制造过程中被重新初始化，通过在传感器被制造并且被并入到介质驱动组件中之后对其进行初始化磁场。

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