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    • 84. 发明授权
    • Dual bus processing apparatus wherein second control means request access of first data bus from first control means while occupying second data bus
    • 双总线处理装置,其中第二控制装置在占用第二数据总线时请求从第一控制装置接入第一数据总线
    • US06249833B1
    • 2001-06-19
    • US09218443
    • 1998-12-22
    • Junichi Takahashi
    • Junichi Takahashi
    • G06F1300
    • G06F13/28
    • In an information processing apparatus equipped with a CPU, an operating rate of this CPU is increased so as to increase a throughput of this entire information processing apparatus. The information processing apparatus is arranged by first and second internal buses independently provided from each other, an internal memory connected to the first internal bus, and a timer 25 connected to the second internal bus. Furthermore, this information processing apparatus is arranged by an A/D converter, first/second serial interfaces, the CPU, and a DMAC (direct memory access controller). Both the CPU and the DMAC control data input/output operations in the internal memory and the timer while occupying at least one of these fist/second data buses. The DMAC supplies a request signal to such a CPU for controlling the data input/output operation of the internal memory while occupying at least one of the first/second internal buses, and also controls the data input/output operations in the internal memory in response to an acknowledge signal supplied from the CPU while occupying either one or both the first/second internal buses.
    • 在配备有CPU的信息处理装置中,该CPU的运行速率增加,从而增加了整个信息处理装置的吞吐量。 该信息处理装置由互相独立提供的第一和第二内部总线,连接到第一内部总线的内部存储器和连接到第二内部总线的定时器25进行布置。 此外,该信息处理装置由A / D转换器,第一/第二串行接口,CPU和DMAC(直接存储器存取控制器)进行配置。 在占用这些第一/第二数据总线中的至少一个的情况下,CPU和DMAC都控制内部存储器和定时器中的数据输入/输出操作。 DMAC向这种CPU提供请求信号,用于在占用第一/第二内部总线中的至少一个时控制内部存储器的数据输入/输出操作,并且响应于控制内部存储器中的数据输入/输出操作 到占用一个或两个第一/第二内部总线时从CPU提供的确认信号。
    • 85. 发明授权
    • Optical head device having a pinhole member for removing wavefront
aberration
    • 具有用于去除波前像差的针孔构件的光学头装置
    • US6072763A
    • 2000-06-06
    • US958156
    • 1997-10-27
    • Junichi Takahashi
    • Junichi Takahashi
    • G11B7/135G11B7/125
    • G11B7/1381G11B7/13922G11B2007/13727
    • Disclosed is an optical head device for projecting a laser spot on an optical disk and reading out recorded information by detecting a recording state recorded on a recording surface of the optical disk, which has: a collimator lens which converges divergent light emitted from a semiconductor laser; and a pinhole member which removes a wavefront aberration at an outline portion of the light converged by the collimator lens; wherein the collimator lens and the pinhole member are disposed in an image-forming optical system, where a microspot is produced, from the semiconductor laser as a light source to an objective lens, and a wavefront aberration of the semiconductor laser is removed to minimize a wavefront aberration of the image-forming optical system.
    • 公开了一种用于通过检测记录在光盘的记录表面上的记录状态来读出记录信息而读出记录信息的光学头装置,其具有:会聚从半导体激光器发出的发散光的准直透镜 ; 以及针孔构件,其去除由准直透镜会聚的光的轮廓部分处的波前像差; 其中准直透镜和针孔构件设置在从作为光源的半导体激光器到物镜的产生微点的图像形成光学系统中,并且去除半导体激光器的波前像差以最小化 图像形成光学系统的波前像差。
    • 86. 发明授权
    • Optical head apparatus
    • 光头设备
    • US5963531A
    • 1999-10-05
    • US958693
    • 1997-10-27
    • Junichi Takahashi
    • Junichi Takahashi
    • G02B7/28G11B7/09G11B7/135G11B7/12
    • G11B7/1381G11B7/0908G11B7/0917G11B7/1353
    • A light beam reflected from an optical disc 1 is passed through an objective lens and a beam splitter to a detective lens. Two diffraction gratings having the same diffraction pitch, i.e., a first diffraction grating and a second diffraction grating, are disposed so that they are relatively inclined at a given angle to each other. Signal beams are detected by a photodetector. When the focusing position of the objective lens relative to the optical disc 1 is shifted in the focusing direction, the focusing position of a light beam from the objective lens is changed, resulting in changed inclination angle .alpha. of moire fringes on the photodetector. Thus, provision of two gratings relatively inclined at a given angle to each other enables detecting signals to be obtained based on the angle signals of the moire fringes even from minute errors with respect to focusing errors on an optical disc or multi-value of pit.
    • 从光盘1反射的光束通过物镜和分束器通过检测透镜。 具有相同衍射间距的两个衍射光栅,即第一衍射光栅和第二衍射光栅被布置成使得它们彼此以给定的角度相对倾斜。 信号光束由光检测器检测。 当物镜的相对于光盘1的聚焦位置在聚焦方向上偏移时,来自物镜的光束的聚焦位置改变,导致光电检测器上的莫尔条纹的倾斜角α改变。 因此,相对于彼此以给定角度相对倾斜的两个光栅的提供使得能够基于莫尔条纹的角度信号甚至从相对于光盘上的聚焦误差或多值凹坑的微小误差获得检测信号。
    • 89. 发明授权
    • Automatic room environment controller
    • 自动室环境控制器
    • US5257735A
    • 1993-11-02
    • US950327
    • 1992-09-24
    • Junichi TakahashiHironobu Nakamura
    • Junichi TakahashiHironobu Nakamura
    • F24F11/00G05D22/02G05D23/19B60H1/20
    • F24F11/00G05D22/02G05D23/1909F24F11/0012F24F11/0015F24F11/0017Y02B30/78
    • An automatic room environment controller which avoids the unnecessary improving operation for the room environment, the controller comprising: member for detecting condition of room environment; member for improving means for improving the condition of the room environment; first member for comparing a value of the condition previously detected by the detecting means with a first predetermined value to determine whether operation of the improving means is necessary or not, so that the operation of the improving means is continued until the condition is improved to the first predetermined value when the necessity of the operation of the improving means; second member for comparing a value of the condition detected at present by the detecting means with the previously detected value of the condition to determine whether the condition corresponding to the value detected at present is improved than the condition corresponding to the previously detected value or not, when the condition corresponding to the value detected at present is not improved, to stop the operation of the improving means.
    • 一种自动房间环境控制器,其避免了对房间环境的不必要的改进操作,所述控制器包括:用于检测房间环境状况的构件; 改善室内环境条件的手段; 第一构件,用于将由检测装置先前检测到的条件的值与第一预定值进行比较,以确定是否需要改进装置的操作,使得改进装置的操作持续到条件改善为 当需要改进装置的操作时,第一预定值; 第二成员,用于将当前由检测装置检测到的条件的值与先前检测到的条件值进行比较,以确定与当前检测到的值相对应的条件是否比与先前检测到的值相对应的条件更好, 当与目前检测到的值相对应的条件没有改善时,停止改进装置的操作。
    • 90. 发明授权
    • Vector control system for induction motors
    • 感应电动机矢量控制系统
    • US4808903A
    • 1989-02-28
    • US181313
    • 1988-04-13
    • Takayuki MatsuiToshiaki OkuyamaTakashi SukegawaJunichi Takahashi
    • Takayuki MatsuiToshiaki OkuyamaTakashi SukegawaJunichi Takahashi
    • H02P21/00H02P21/14H02P5/40
    • H02P21/22H02P2207/01
    • A vector control system for an induction motor driven by a power converter which generates three phase ac currents containing harmonics. In the system, an exciting current command value and a torque current command value in a rotating magnetic field coordinate system are applied, induction motor primary currents in a stator coordinate system is detected at a period which is the same or integral multiple of that of the harmonic components by integration operation, the detected value of the integrated primary currents is subjected to definite integration over the same time interval as the period thereof thereby detecting fundamental wave components of the primary currents without the harmonic components, the fundamental wave components are transformed in the form of rotating magnetic field coordinate system thereby detecting an exciting current component and a torque current component, a deviation between the exciting current command value and the detected actual exciting current component and a deviation between the torque current command value and the detected actual torque current component are detected respectively, and producing and applying to the power converter three phase ac voltage command values in the stator coordinate system tending to reduce the deviations to zero.
    • 用于由产生包含谐波的三相交流电的功率转换器驱动的感应电动机的矢量控制系统。 在该系统中,施加旋转磁场坐标系中的励磁电流指令值和转矩电流指令值,定子坐标系中的感应电动机初级电流以与该定子坐标系相同或整数倍的周期检测 谐波分量通过积分运算,积分一次电流的检测值在与其周期相同的时间间隔内受到一定的积分,从而检测一次电流的基波分量,而没有谐波分量,基波成分在 旋转磁场坐标系的形式,从而检测励磁电流分量和转矩电流分量,励磁电流指令值与检测到的实际励磁电流分量之间的偏差以及转矩电流指令值与检测到的实际转矩电流分量之间的偏差 分别被检测到 在定子坐标系中产生并施加到功率转换器的三相交流电压指令值,倾向于将偏差减小到零。