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1. 发明授权

US4337458A Data encoding method and system employing two-thirds code rate with full word look-ahead 失效
标题翻译：数据编码方法和系统采用三分之二的代码率与全字预览
公开(公告)号：US4337458A
公开(公告)日：1982-06-29
申请号：US122632
申请日：1980-02-19
申请人： Martin Cohn , George V. Jacoby , Charles A. Bates, III
发明人： Martin Cohn , George V. Jacoby , Charles A. Bates, III
IPC分类号： H03M7/00 , G11B20/14 , H03M7/14 , H04L25/49 , H03K13/24
CPC分类号： G11B20/1426
摘要： A method and apparatus for encoding binary data in a data stream so as to increase the number of data bits represented by one transition, such as a transition recorded on a magnetic medium, and thereby increase the storage density. The data stream is converted into words each having m bits. Two of the data words are stored so as to be simultaneously accessible to a converting system that converts the data words into code words wherein each code word has n bits. In the invention, m/n=2/3. In order to increase the space between adjacent transitions, the conversion is carried out according to a scheme wherein all code words have at least one binary ONE and lack successive binary ONEs except certain cases in which a code word is converted to all ZEROs to avoid ONEs in the nth bit of a given code word and the first bit of the code word following the given code word. Also described is a decoding method and apparatus for recovering the encoded data and decoding it to the original binary data.
摘要翻译：一种用于对数据流中的二进制数据进行编码的方法和装置，以便增加由一个转变所表示的数据位的数量，例如记录在磁介质上的转变，从而增加存储密度。数据流被转换成具有m位的字。存储两个数据字以便将数据字转换成其中每个码字具有n位的码字的转换系统可以同时访问。在本发明中，m / n = 2/3。为了增加相邻转换之间的空间，根据一种方案进行转换，其中所有代码字都具有至少一个二进制1并且缺少连续的二进制1，除了将代码字转换为所有ZERO以避免一次的某些情况在给定代码字的第n位和代码字之后的代码字的第一位。还描述了一种用于恢复编码数据并将其解码为原始二进制数据的解码方法和装置。

2. 发明授权

US06356401B1 Method and apparatus for forming accurate optical clock patterns 失效
标题翻译：用于形成精确光时钟模式的方法和装置
公开(公告)号：US06356401B1
公开(公告)日：2002-03-12
申请号：US09120707
申请日：1998-07-22
申请人： Charles A. Bates , Lawrence M. Bryant , David S. Kuo , Eric G. Rawson
发明人： Charles A. Bates , Lawrence M. Bryant , David S. Kuo , Eric G. Rawson
IPC分类号： G11B509
CPC分类号： B82Y10/00 , G11B5/012 , G11B5/59633 , G11B5/59677 , G11B5/59688 , G11B5/60 , G11B5/743 , G11B5/82
摘要： The present invention is used to form precise, optically detectable patterns on rotating members of a disk and spindle assembly of a disk drive used in data storage system. In particular, the invention employs an optical source to form optically detectable patterns on the rotating members of the disk drive. These optically detectable patterns are used to create an accurate clock track. The clock track may be used to create multiple accurate magnetic patterns on one or more disks attached to a disk and spindle assembly in a magnetic data storage system. By successively changing the radius at which the magnetic patterns are created it is then possible to create multiple magnetic patterns at successive radii with all such magnetic patterns having a precise geometric relationship to each other. Alternatively, the accurate clock pattern may stand alone as an encoder. Additionally, the present invention may also be used to form textured surfaces on a disk to control the flying characteristics of a magnetic head slider assembly. The present invention can also create textured surfaces which will serve as a resting area for the magnetic head slider assembly of a magnetic disk drive when the disk is not spinning.
摘要翻译：本发明用于在数据存储系统中使用的磁盘驱动器的盘和主轴组件的旋转构件上形成精确的光学可检测图案。特别地，本发明采用光源来在盘驱动器的旋转构件上形成光学上可检测的图案。这些可光学检测的图案用于创建精确的时钟轨迹。时钟轨道可以用于在附接到磁数据存储系统中的盘和主轴组件的一个或多个盘上创建多个精确的磁图案。通过依次改变产生磁图案的半径，则可以在连续半径处产生多个磁图案，所有这些磁图案彼此之间具有精确的几何关系。或者，精确的时钟模式可以独立地作为编码器。另外，本发明还可用于在盘上形成纹理表面以控制磁头滑块组件的飞行特性。本发明还可以产生纹理表面，当盘不旋转时，其将用作磁盘驱动器的磁头滑块组件的静止区域。

3. 发明授权

US5570241A Single channel, multiple head servo writing with embedded head identification 失效
标题翻译：单通道，多头伺服写入，嵌入式头识别
公开(公告)号：US5570241A
公开(公告)日：1996-10-29
申请号：US449123
申请日：1995-05-24
申请人： Charles R. Nielsen , Charles A. Bates , Matthew W. Rooke , Fred R. Hansen , Paul T. Petersen , Me V. Le , Eugene K. Lew
发明人： Charles R. Nielsen , Charles A. Bates , Matthew W. Rooke , Fred R. Hansen , Paul T. Petersen , Me V. Le , Eugene K. Lew
IPC分类号： G11B5/09 , G11B5/596 , G11B5/02
CPC分类号： G11B5/09 , G11B5/59633
摘要： A write drive logic circuit is described. The write driver logic circuit comprises a set of write drivers, with each one of the set of write drivers having an input and an output, such that each write driver is responsive to an input signal applied to the input to provide a write output signal at the output as a function of the input signal. A set of memory devices (e.g. shift registers) is provided, one for each write driver. Each one of the shift registers stores unique head identification information and includes an output to controllably output a signal representative of the unique head identification information. Furthermore, each one of a set of multiplexers includes an output, a first input coupled to a corresponding one of the outputs of the set of shift registers to receive the signal representative of the unique identification information stored in the respective shift register and a second input coupled to a common write data line that transmits a signal representative of preselected information. The output of each one of the set of multiplexers is coupled to the input of a corresponding one of the set of write drivers such that one of the first and second inputs of the multiplexer is selectively applied to the input of the corresponding write driver.
摘要翻译：描述写驱动逻辑电路。写驱动器逻辑电路包括一组写入驱动器，其中写入驱动器组中的每一个具有输入和输出，使得每个写入驱动器响应于施加到输入端的输入信号以提供写入输出信号输出作为输入信号的函数。提供一组存储器件（例如移位寄存器），一个用于每个写入驱动器。每个移位寄存器存储唯一的头标识信息，并且包括可控地输出表示唯一头识别信息的信号的输出。此外，一组多路复用器中的每一个包括输出端，耦合到该组移位寄存器的相应输出端的第一输入端，以接收表示存储在各个移位寄存器中的唯一识别信息的信号，以及第二输入耦合到传送代表预选信息的信号的公共写数据线。所述多路复用器组中的每一个的输出耦合到所述写入驱动器组中的对应的一个的输入，使得所述多路复用器的第一和第二输入中的一个被选择性地施加到相应的写入驱动器的输入。

4. 发明授权

US06414807B1 Method and apparatus for optically sensing accurate clock patterns 失效
公开(公告)号：US06414807B1
公开(公告)日：2002-07-02
申请号：US09120695
申请日：1998-07-22
申请人： Charles A. Bates , Lawrence M. Bryant , David S. Kuo , Eric G. Rawson
发明人： Charles A. Bates , Lawrence M. Bryant , David S. Kuo , Eric G. Rawson
IPC分类号： G11B509
摘要： A disk drive system is described for forming and reading precise optically detectable patterns on rotating members of a disk and spindle assembly used in data storage system. In particular the invention describes a magnetic disk drive employing a laser system to form and sense optical clock patterns placed on the rotating members of the disk drive. These optically detectable patterns are used to create an accurate clock track. The clock may be used to create multiple accurate magnetic patterns on one or more disks attached to a disk and spindle assembly in a magnetic data storage system. By successively changing the radius at which the magnetic patterns are created it is then possible to create multiple magnetic patterns at successive radii with all such magnetic patterns having a precise geometric relationship to each other. Alternatively, the accurate clock pattern may stand alone as an encoder. Additionally, the laser system may also be used to form textured surfaces on a disk to control the flying characteristics of a magnetic head slider assembly. These textured surfaces may also serve as a resting area for the magnetic head slider assembly when the disk is not spinning.

5. 发明授权

US4136840A Cord take-up reel for an electric lawn mower 失效
标题翻译：用于电动草坪割草机的电缆卷取机
公开(公告)号：US4136840A
公开(公告)日：1979-01-30
申请号：US871707
申请日：1978-01-23
申请人： Charles A. Bates
发明人： Charles A. Bates
IPC分类号： A01D34/82 , B65H75/42 , B65H17/46
CPC分类号： A01D34/822 , B65H75/42 , A01D2101/00
摘要： A cord take-up reel for use on an electric lawn mower. The reel is telescopically constructed to permit its axial dimension to be adjusted for mounting between a pair of opposing mower handles. A pair of shafts extending outwardly from opposing sides of the reel are detachably and rotatably mounted in brackets held on the opposing mower handles. A crank pivotally attached to one of the reel shafts is positionable between a winding position and a stowed position, the motion of the crank in its stowed position being limited by a cradling member attached to the adjacent bracket.
摘要翻译：用于电动草坪割草机的电缆卷取机。卷轴可伸缩地构造成允许其轴向尺寸被调节以安装在一对相对的割草机手柄之间。从卷轴的相对侧向外延伸的一对轴可拆卸地且可旋转地安装在保持在相对的割草机手柄上的托架中。枢转地附接到一个卷轴的曲柄可定位在卷绕位置和收起位置之间，曲柄在其收起位置的运动由附接到相邻支架的托架构件限制。

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