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    • 2. 发明授权
    • Memory system
    • 内存系统
    • US07257725B2
    • 2007-08-14
    • US10294594
    • 2002-11-15
    • Hideki OsakaToyohiko KomatsuMasashi HoriguchiSusumu HatanoKazuya Ito
    • Hideki OsakaToyohiko KomatsuMasashi HoriguchiSusumu HatanoKazuya Ito
    • G06F1/00
    • G06F13/4086
    • A clock is located at a position close to a plurality of memory modules connected to a memory controller and located away from the controller, and wiring is carried out so that read access is preferential for transmission of read data. With respect to write data, a delay amount corresponding to a round-trip propagation delay time to each of the modules is measured and writing of the write data is carried out while maintaining a known time relationship between the clock and data. To measure round-trip reflection, lines are wired between the modules and a location detection circuit in a 1:1 relationship, and the circuit measures a time taken from a signal output time of a driver having the same impedance as that of the wired lines to a reflected-wave reception time of a hysteresis receiver.
    • 时钟位于靠近与存储器控制器并且远离控制器的多个存储器模块的位置,并且执行布线,使得读取访问优先于读取数据的传输。 对于写数据,测量对应于每个模块的往返传播延迟时间的延迟量,并且在保持时钟和数据之间的已知时间关系的同时执行写入数据的写入。 为了测量往返反射,线路以1:1的关系连接到模块和位置检测电路之间,并且电路测量从具有与有线线路相同阻抗的驱动器的信号输出时间所花费的时间 到滞后接收器的反射波接收时间。
    • 8. 发明授权
    • Printed board inspecting apparatus
    • 印刷板检测仪器
    • US06924651B2
    • 2005-08-02
    • US10212209
    • 2002-08-06
    • Hideki OsakaToyohiko Komatsu
    • Hideki OsakaToyohiko Komatsu
    • G01R31/02G01R5/00G01R31/11G01R31/28G01R27/28G01R31/00
    • G01R31/11G01R31/2806Y10T29/49004Y10T29/4913
    • A printed board inspecting apparatus includes: an input unit for inputting a pulse from a first signal line; a receiving unit for receiving a voltage induced in a second signal line in response to the input pulse inputted; and a judging unit for judging whether or not a ratio between a voltage of the input pulse and the voltage induced in the second signal line is within a predetermined range. A check is made using a TDR method to determine whether or not the degree of coupling is within a range of specified values and a check is made to determine each of the voltage of the polarized RZ signal and the pulse width time is within a range of specified values to thereby inspect a printed board and a semiconductor chip constituting a bus using a directional coupler.
    • 印刷电路板检查装置包括:输入单元,用于输入来自第一信号线的脉冲; 接收单元,用于响应输入的输入脉冲接收在第二信号线中感应的电压; 以及判断单元,用于判断输入脉冲的电压与第二信号线中感应的电压之间的比率是否在预定范围内。 使用TDR方法进行检查,以确定耦合度是否在指定值的范围内,并且进行检查以确定极化RZ信号的每个电压,并且脉冲宽度时间在 从而使用定向耦合器检查构成总线的印刷电路板和半导体芯片。
    • 9. 发明授权
    • Design support apparatus for circuit including directional coupler, design support tool, method of designing circuit, and circuit board
    • 包括定向耦合器,设计支持工具,电路设计方法和电路板在内的电路设计支持设备
    • US06829749B2
    • 2004-12-07
    • US10214126
    • 2002-08-08
    • Hideki OsakaToyohiko Komatsu
    • Hideki OsakaToyohiko Komatsu
    • G06F1750
    • H01P5/185G06F17/5036G06F17/5068H01P5/187H05K1/0239H05K3/0005
    • The number of steps for preparing a layout diagram of a circuit including a coupler, which is formed by arranging a main line and a stub line in parallel with each other, is reduced. A circuit diagram editor 1902 arranges a coupler symbol 100 stored in a component symbol storage section 1904 when the coupler is arranged in preparing a circuit diagram. A layout section 1935 of a layout diagram editor 1922 layouts two wirings constituting the coupler by use of circuit diagram information and coupler information in which a coupler length and a coupler interval are defined. An object extraction section 1937 of a wiring check section 1936 extracts components and wirings from the layout diagram, and passes these to a wiring checker 1938. At this time, the coupler is passed to the wiring checker as one component that cannot be decomposed no more. Therefore, an interval between two wirings constituting the coupler is not checked.
    • 减少了通过将主线和短线布置成彼此平行而形成的包括耦合器的电路布局图的步骤数。 当制造电路图时,电路图编辑器1902布置存储在元件符号存储部分1904中的耦合器符号100。 布局图编辑器1922的布局部分1935通过使用其中限定了耦合器长度和耦合器间隔的电路图信息和耦合器信息来布置构成耦合器的两个布线。 布线检查部1936的物体提取部1937从布局图中提取部件和布线,并将其传递到布线检查器1938.此时,耦合器作为不能分解的一个部件被传递到布线检查器 。 因此,不检查构成耦合器的两条布线之间的间隔。