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    • 1. 发明授权
    • Series resonant drive circuit for magnetic bubble memory
    • 用于磁性气泡存储器的串联谐振驱动电路
    • US4430729A
    • 1984-02-07
    • US416043
    • 1982-09-08
    • Takashi ToyookaHirokazu AokiMamoru SugieShigeru Yoshizawa
    • Takashi ToyookaHirokazu AokiMamoru SugieShigeru Yoshizawa
    • G11C11/14G11C19/08
    • G11C19/085
    • A series resonant drive circuit for a magnetic bubble memory includes X- and Y-coils arranged orthogonally to each other for generating a rotating magnetic field applied to a magnetic bubble memory chip, resonance capacitors each connected to a corresponding one of the X- and Y-coils for forming a series resonance circuit with the corresponding coil at a frequency of the rotating magnetic field, power supplies each connected to a corresponding one of the resonance circuits, and an inductance device connected in series with both of the resonance circuits and a capacitance device connected between the resonance circuits to compensate a mutual inductance due to the inductive coupling between the X- and Y-coils and a capacitance due to the capacitive coupling between the X- and Y-coils. Further, the temperature coefficient of the capacitance device is selected so that the temperature coefficients of the mutual inductance and capacitance between the coils can be compensated.
    • 一种用于磁性气泡存储器的串联谐振驱动电路,包括彼此垂直排列的X线圈和Y型线圈,用于产生施加到磁性气泡存储器芯片的旋转磁场,谐振电容器各自连接到X和Y中相应的一个 - 用于在旋转磁场的频率下与对应的线圈形成串联谐振电路的线圈,各自连接到相应的一个谐振电路的电源,以及与两个谐振电路串联连接的电感器件和电容 连接在谐振电路之间的器件,以补偿由于X线圈和Y线圈之间的电感耦合引起的互感以及由于X线圈和Y线圈之间的电容耦合引起的电容。 此外,选择电容器件的温度系数,使得可以补偿线圈之间的互感和电容的温度系数。
    • 9. 发明授权
    • Injection timing control system for fuel-injection pump for engine
    • 发动机燃油喷射泵喷油定时控制系统
    • US4305366A
    • 1981-12-15
    • US70751
    • 1979-08-29
    • Kazunari ImasatoShigeru YoshizawaTakayuki Suzuki
    • Kazunari ImasatoShigeru YoshizawaTakayuki Suzuki
    • F02D1/18F16D3/10F02M59/20
    • F02D1/183F16D3/10
    • An injection timing control system for a fuel-injection pump for an engine has a phase angle regulator for varying the rotational phase angle of a drive shaft of the fuel-injection pump. The regulator has a cylindrical extension of one of an input shaft adapted to be driven by the engine and an output shafts for driving the drive shaft of the pump coaxially surrounding an end portion of the other shaft in spaced apart relationship. A male spline and female spline are formed respectively on the end portion and the extension over some axial length thereof, at least one of the splines being a helical spline. A slider is located in an annular space between the splines and formed with splines meshing therewith respectively. An annular cylinder is formed between the substantial parts of the rest axial length portions of the cylindrical extension and end portion. A piston is reciprocally received in the cylinder, the slider and piston being formed as a unit.
    • 用于发动机的燃料喷射泵的喷射定时控制系统具有用于改变燃料喷射泵的驱动轴的旋转相位角的相位角调节器。 调节器具有适于由发动机驱动的输入轴之一的圆柱形延伸部和用于驱动泵的驱动轴的输出轴,该输出轴以间隔开的关系同轴地围绕另一轴的端部。 在其一部分轴向长度上的端部和延伸部分别形成一个外花键和雌花键,其中至少一个花键是螺旋花键。 滑块位于花键之间的环形空间中,并且形成有与其分别啮合的花键。 在圆柱形延伸部和端部的其余轴向长度部分的主要部分之间形成环形圆柱体。 活塞在气缸中往复运动,滑块和活塞形成为一个单元。
    • 10. 发明授权
    • Method and apparatus for testing a magnetic bubble memory
    • 用于测试磁性气泡存储器的方法和装置
    • US4233668A
    • 1980-11-11
    • US946864
    • 1978-09-29
    • Nakahiko YamaguchiSusumu HibiShigeru YoshizawaShoji YoshimotoAkira Kobayashi
    • Nakahiko YamaguchiSusumu HibiShigeru YoshizawaShoji YoshimotoAkira Kobayashi
    • G11C11/14G11C19/08G11C29/00
    • G11C29/003G11C19/0875
    • Method and apparatus for testing a magnetic bubble memory are disclosed wherein a most severe magnetic bubble domain arrangement which fully causes the ununiformity of magnetic interaction between magnetic bubble domains is experimentally determined, and a basic pattern [P] and a test information pattern determining an arrangement of the basic patterns [P] and complementary patterns [P] thereof for realizing that magnetic bubble domain arrangement are stored in memory units, respectively, and the basic patterns [P] and the complementary patterns [P] are sequentially read out in accordance with the test information pattern to generate magnetic bubble domain trains in a storage area of the magnetic bubble memory. The magnetic bubble domain trains are then read out by a magnetic bubble detector and the read-out signals are converted to logical signals by a sense amplifier unit and the logical signals are synchronized with logical signals corresponding to the test information pattern and compared therewith to produce an identity or non-identity signal and thus the disclosed method and apparatus for testing the magnetic bubble memory can exactly evaluate a memory characteristic of the magnetic bubble memory.
    • 公开了用于测试磁性气泡存储器的方法和装置,其中完全导致磁性气泡区域之间的磁性相互作用的不均匀性的最严重的磁性气泡区域布置被实验地确定,并且确定基本图案[P]和确定布置的测试信息图案 基本图案[P]和互补图案[P]分别用于实现磁性气泡结构排列存储在存储单元中,基本图案[P]和互补图案[P]按照 在气泡存储器的存储区域中产生磁泡畴列的测试信息模式。 然后通过磁性气泡检测器读出磁性气泡畴列,并且通过读出放大器单元将读出的信号转换成逻辑信号,并且逻辑信号与对应于测试信息图案的逻辑信号同步并与之进行比较以产生 身份或非身份信号,因此所公开的用于测试磁性气泡存储器的方法和装置可以精确地评估磁性气泡存储器的存储特性。