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    • 42. 发明授权
    • Measuring and neutralizing the electrical charge at the interface of a magnetic head and media
    • 测量和中和磁头和介质的界面处的电荷
    • US07468196B2
    • 2008-12-23
    • US11399284
    • 2006-04-06
    • Zhu FengEllis ChaXiaofeng Zhang
    • Zhu FengEllis ChaXiaofeng Zhang
    • B05D5/12
    • G11B5/60
    • A system and method for measuring and neutralizing the electrical charge at the interface of a magnetic head and a magnetic storage medium, such as a disk, is disclosed. A surface treatment material is applied to the magnetic head. The surface treatment material matches the medium surface material on the surface of the magnetic storage medium. The surface treatment material on the magnetic read/write head may be a fluorinated carbon, such as a Fomblin Z-derivative, perfluoro alkyl trichlorosilane, a FC-722, or a fluorinated polymer. The surface treatment material can be applied to the magnetic head by a vapor deposition process or by a liquid immersion process. The charge on the head-disk interface can be measured by applying varying external charges to the head while reading a signal previously written to the disk.
    • 公开了一种用于测量和中和磁头和诸如磁盘的磁存储介质的界面处的电荷的系统和方法。 将表面处理材料施加到磁头。 表面处理材料与磁性存储介质表面上的介质表面材料相匹配。 磁读写头上的表面处理材料可以是氟化碳,如Fomblin Z衍生物,全氟烷基三氯硅烷,FC-722或氟化聚合物。 表面处理材料可以通过气相沉积法或液浸法施加到磁头上。 头磁盘接口上的电荷可以通过在读取先前写入磁盘的信号时向磁头施加变化的外部电荷来测量。
    • 43. 发明授权
    • Method for testing a micro-actuator in a magnetic tester
    • 用于测试磁性测试仪中微型致动器的方法
    • US07085083B2
    • 2006-08-01
    • US10728450
    • 2003-12-05
    • Li-Yan ZhuChao-Hui YangXiaofeng ZhangYen FuEllis T. Cha
    • Li-Yan ZhuChao-Hui YangXiaofeng ZhangYen FuEllis T. Cha
    • G11B27/36
    • G11B5/455G11B5/54
    • A system and method for testing the stroke and frequency response of a micro-actuator is disclosed. A dynamic parameter tester writes two concentric tracks on a noise free portion of a magnetic storage medium. A magnetic read/write head and a micro-actuator is positioned between the two concentric tracks. An initial oscillating voltage is applied at a first frequency to the micro-actuator while reading back a signal from the two concentric tracks. A stroke characteristic of the micro-actuator is calculated based in part on the read-back signal. The initial oscillating voltage is determined from previous tests. The first stroke characteristic of the micro-actuator is based on a time-averaged amplitude of the first signal. The two concentric tracks are written at a pre-determined pitch.
    • 公开了一种用于测试微致动器的行程和频率响应的系统和方法。 动态参数测试仪在磁存储介质的无噪声部分上写入两个同心轨道。 磁读/写头和微致动器位于两个同心轨道之间。 初始振荡电压以第一频率施加到微致动器,同时从两个同心轨道读回信号。 部分地基于回读信号计算微致动器的行程特性。 初始振荡电压由先前的测试确定。 微致动器的第一冲程特性是基于第一信号的时间平均振幅。 两个同心轨道以预定间距进行写入。
    • 48. 发明授权
    • Method for managing a processor, lock contention management apparatus, and computer system
    • 用于管理处理器,锁争用管理装置和计算机系统的方法
    • US08762613B2
    • 2014-06-24
    • US13489202
    • 2012-06-05
    • Xiaofeng ZhangHan Zheng
    • Xiaofeng ZhangHan Zheng
    • G06F12/00G06F7/00
    • G06F9/3009G06F9/524
    • A method for managing a processor includes: obtaining an online request of a processor of a computer system; collecting lock contention information of the computer system if a lock contention status flag indicates a non-lock thrashing status; determining whether the computer system is in a lock thrashing status according to the lock contention information; and accepting the online request if it is determined that the computer system is in a non-lock thrashing status. By using the management method according to embodiments of the present application, processor performance degradation and a waste of idle processor resources that are caused by the case that the computer system is in a lock thrashing status are prevented, thereby improving utilization efficiency of processor resources and promoting overall performance of the computer system.
    • 一种用于管理处理器的方法包括:获得计算机系统的处理器的在线请求; 如果锁争用状态标志指示非锁定颠簸状态,则收集计算机系统的锁争用信息; 根据锁争用信息确定计算机系统是否处于锁定状态; 如果确定计算机系统处于非锁定状态,则接受该在线请求。 通过使用根据本申请的实施例的管理方法,防止由计算机系统处于锁定状态的情况引起的处理器性能下降和空闲处理器资源的浪费,从而提高处理器资源的利用效率, 促进电脑系统的整体表现。
    • 50. 发明申请
    • CUTTING ELEMENT FOR OSCILLATING POWER TOOL
    • 切割元件用于振荡电动工具
    • US20130133501A1
    • 2013-05-30
    • US13590457
    • 2012-08-21
    • Xiaofeng Zhang
    • Xiaofeng Zhang
    • B26D1/30
    • B23D61/006Y10T83/9454
    • A cutting element includes a main body extending in a longitudinal direction, a mounting hole and a cutting portion for acting on a piece to be processed. The main body defines an axis extending in the longitudinal direction, the mounting hole is arranged at a first end of the main body for connection to the output shaft of an oscillating power tool and the cutting portion is arranged at a second end of the main body and has a first cutting portion and a second cutting portion. The second cutting portion protrudes from the first cutting portion laterally. The first cutting portion is adapted to cut the piece in a feeding direction and the second cutting portion is adapted to cut the piece in a direction perpendicular to the feeding direction.
    • 切割元件包括沿纵向方向延伸的主体,安装孔和用于作用在待加工件上的切割部分。 主体限定沿纵向延伸的轴线,安装孔布置在主体的第一端,用于连接到振动动力工具的输出轴,并且切割部分布置在主体的第二端 并且具有第一切割部分和第二切割部分。 第二切割部分横向从第一切割部分突出。 第一切割部分适于在进给方向上切割件,并且第二切割部分适于沿垂直于进给方向的方向切割件。