Method for testing components of a magnetic storage system
    3.
    发明授权
    Method for testing components of a magnetic storage system 失效
    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

    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。

    Method for measuring timing asymmetry in a magnetic storage system
    4.
    发明授权
    Method for measuring timing asymmetry in a magnetic storage system 失效
    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

    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。

    Disk accessing circuitry
    5.
    发明授权
    Disk accessing circuitry 失效
    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

    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。

    Acoustic Liquid Dispensing Apparatus
    6.
    发明申请
    Acoustic Liquid Dispensing Apparatus 有权
    声液分配装置

    公开(公告)号:US20090060796A1

    公开(公告)日:2009-03-05

    申请号:US12197985

    申请日:2008-08-25

    IPC分类号: G01N21/11 B01L3/02

    摘要: A liquid dispensing apparatus for dispensing droplets of a liquid, and methods for measuring various fluid parameters of the liquid are described. The liquid dispensing apparatus comprises a container having a chamber for holding a liquid. An orifice is positioned at an end of the chamber for dispensing droplets of the liquid, the orifice being configured to retain the liquid in the container if the container is positioned with the orifice facing in a downward direction. An acoustic transducer means is at least partially positioned in the chamber for periodically propagating a focused acoustic beam toward the orifice and through at least some of the liquid while the liquid is contained in the chamber, with the focused acoustic beam being capable of causing a droplet of the liquid to be ejected from the orifice when a free surface of the liquid is within the depth of field of the acoustic transducer means. Fluid parameters that can be measured include the sound velocity in the liquid, liquid level and liquid concentration, liquid acoustic impedance, liquid density ultrasonic attenuation and ultrasonic viscosity.

    摘要翻译: 描述了用于分配液体的液滴的液体分配装置以及用于测量液体的各种流体参数的方法。 液体分配装置包括具有用于保持液体的室的容器。 孔口位于腔室的端部,用于分配液体的液滴,如果容器定位成孔口朝向下方的方向,孔口被配置成将液体保持在容器中。 声学换能器装置至少部分地定位在腔室中,用于在聚焦的声束能够引起液滴时,将聚焦的声束周期性地传播到孔口并通过至少一些液体,同时液体被容纳在腔室中 当液体的自由表面在声换能器装置的深度范围内时,从喷嘴喷射的液体。 可以测量的流体参数包括液体中的声速,液位和液体浓度,液体声阻抗,液体密度超声衰减和超声波粘度。

    Acoustic liquid dispensing apparatus
    7.
    发明授权
    Acoustic liquid dispensing apparatus 有权
    声液分配装置

    公开(公告)号:US07426866B2

    公开(公告)日:2008-09-23

    申请号:US11296131

    申请日:2005-12-07

    IPC分类号: G01H5/00 G01S15/00

    摘要: A liquid dispensing apparatus for dispensing droplets of a liquid, and methods for measuring various fluid parameters of the liquid are described. The liquid dispensing apparatus comprises a container having a chamber for holding a liquid. An orifice is positioned at an end of the chamber for dispensing droplets of the liquid, the orifice being configured to retain the liquid in the container if the container is positioned with the orifice facing in a downward direction. An acoustic transducer means is at least partially positioned in the chamber for periodically propagating a focused acoustic beam toward the orifice and through at least some of the liquid while the liquid is contained in the chamber, with the focused acoustic beam being capable of causing a droplet of the liquid to be ejected from the orifice when a free surface of the liquid is within the depth of field of the acoustic transducer means. Fluid parameters that can be measured include the sound velocity in the liquid, liquid level and liquid concentration, liquid acoustic impedance, liquid density and ultrasonic viscosity.

    摘要翻译: 描述了用于分配液体的液滴的液体分配装置以及用于测量液体的各种流体参数的方法。 液体分配装置包括具有用于保持液体的室的容器。 孔口位于腔室的端部,用于分配液体的液滴,如果容器定位成孔口朝向下方的方向,孔口被配置成将液体保持在容器中。 声学换能器装置至少部分地定位在腔室中,用于当液体容纳在腔室中时,将聚焦的声束周期性地传播到孔口并且通过至少一些液体,聚焦的声束能够引起液滴 当液体的自由表面在声换能器装置的深度范围内时,从喷嘴喷射的液体。 可以测量的流体参数包括液体中的声速,液位和液体浓度,液体声阻抗,液体密度和超声波粘度。

    Acoustic method for determining the viscosity and/or surface tension of a liquid
    8.
    发明授权
    Acoustic method for determining the viscosity and/or surface tension of a liquid 有权
    用于确定液体的粘度和/或表面张力的声学方法

    公开(公告)号:US07281413B2

    公开(公告)日:2007-10-16

    申请号:US11088436

    申请日:2005-03-24

    IPC分类号: G01N11/00

    摘要: The present invention comprises a noncontact method for measuring viscosity and/or surface tension information of a liquid in a liquid containment structure. The steps of the method include exciting a surface of the liquid with an excitation burst of acoustic energy that causes the surface to oscillate; generating a positional data set comprised of a plurality of positional measurements related to the detected position of the surface at a plurality of times after the surface is excited; generating a frequency domain data set from the positional data set, the amplitude spectrum of the frequency domain data set comprising information about the oscillation frequency of at least one vibrational mode of the of the surface as it oscillates; and processing the frequency domain data set and/or the positional data set to yield information about the surface tension and/or viscosity of the liquid. A Fast Fourier Transform technique may be used in generating the frequency domain data set.

    摘要翻译: 本发明包括用于测量液体容纳结构中的液体的粘度和/或表面张力信息的非接触方法。 该方法的步骤包括以引起表面振荡的声能的激发脉冲激发液体的表面; 在所述表面被激发之后,多次生成与所述表面的检测位置有关的多个位置测量值的位置数据集; 从所述位置数据集合生成频域数据集,所述频域数据集的振幅谱包括当所述表面振荡时至少一个振动模式的振荡频率的信息; 并且处理频域数据集和/或位置数据集以产生关于液体的表面张力和/或粘度的信息。 快速傅立叶变换技术可用于产生频域数据集。

    Very high-density diskette format method and computer-implemented process
    9.
    发明授权
    Very high-density diskette format method and computer-implemented process 失效
    非常高密度的磁盘格式方法和计算机实现的过程

    公开(公告)号:US5535069A

    公开(公告)日:1996-07-09

    申请号:US459094

    申请日:1995-06-02

    摘要: A diskette comprising a jacket, a liner material disposed within said jacket, a flat circular media having a magnetic coating on both sides disposed within said liner material, a hub attached at the center of said media, a plurality of servo grooves on at least one of said sides of said media that have stitched patterns that will alternate on-and-off at twenty kilohertz in the presence of a constant, unmodulated light source. The diskette is magnetically formatted with reference and data tracks recorded in such a way that extremely accurate position determinations can be made by looking at the analog amplitude of the detected tracks and comparing them at different head positions. The innermost tracks contain redundant copies of a disk mapping table that comprises data for a media type code, a sector size code, a sector interleave code, a total track count, a reassignment area starting address, a data area starting address, a total sector count, an update count, and a reassignment table having at least room for 250 entries of three bytes each.

    摘要翻译: 一种软盘,包括夹套,设置在所述护套中的衬垫材料,平坦的圆形介质,其两侧上设置有磁性涂层,设置在所述衬垫材料内;安装在所述介质中心的毂;至少一个 所述介质的所述侧面,在存在恒定的未调制的光源的情况下,其缝合图案将在二十千赫兹交替地开启和关闭。 磁盘被磁格式化,其参考和数据轨迹以这样的方式记录,即通过观察检测到的轨迹的模拟幅度并在不同的头部位置进行比较,可以进行非常精确的位置确定。 最内侧的轨道包含盘映射表的冗余副本,该盘映射表包括用于媒体类型码,扇区大小码,扇区交织码,总轨迹数,数据区起始地址,数据区起始地址,总扇区 计数,更新计数和重新分配表,其具有至少有250个条目的空间,每个条目为三个字节。