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    • 5. 发明授权
    • Method of designing a semiconductor integrated circuit
    • 半导体集成电路设计方法
    • US07480875B2
    • 2009-01-20
    • US11312370
    • 2005-12-21
    • Kazuhiro SatohKenji ShimazakiTakahiro IchinomiyaShouzou Hirano
    • Kazuhiro SatohKenji ShimazakiTakahiro IchinomiyaShouzou Hirano
    • G06F17/50
    • G06F17/5036
    • In optimizing a necessary capacitance of a semiconductor integrated circuit, the capacitance optimization can be achieved with higher precision by optimizing an IR drop (voltage drop) while considering dynamically a cell activation rate. In other words, in estimating a power-supply capacitance inserted to suppress a voltage fluctuation of the power supply, an areal demerit can be reduced by reducing a necessary capacitance component as a whole while considering a cell activation rate in the circuit or by selecting the capacitance required to supplement only temporal portions whose power-supply fluctuation is wide after the estimation of a cell operating timing. Also, the process can be conducted in a short time at the early stage of design by using a wiring load model at the time of capacitance estimate.
    • 在优化半导体集成电路的必要电容时,可以通过在动态地考虑电池激活率的同时优化IR降(电压降),以更高的精度实现电容优化。 换句话说,在估计插入的电源电容以抑制电源的电压波动时,通过在考虑电路中的单元激活率的同时通过减少所需的电容分量作为整体来减少面积,或者通过选择 仅在单元操作定时的估计之后补充电源波动较大的时间部分所需的电容。 此外,可以在设计的早期的短时间内通过在电容估计时使用布线负载模型来进行该过程。
    • 10. 发明授权
    • Method and apparatus for analyzing electromagnetic interference
    • 用于分析电磁干扰的方法和装置
    • US06876210B2
    • 2005-04-05
    • US09993595
    • 2001-11-27
    • Kenji ShimazakiShouzou HiranoTatsuo OhhashiTakashi MizokawaHiroyuki Tsujikawa
    • Kenji ShimazakiShouzou HiranoTatsuo OhhashiTakashi MizokawaHiroyuki Tsujikawa
    • G01R29/08G01R31/00G01R31/28G06F17/50H01L21/82G01R31/302
    • G06F17/5022G01R31/002
    • A method of analyzing electromagnetic interference in which an amount of electromagnetic interference from an LSI is analyzed, wherein the method includes: an equivalent power source current information calculating step of calculating information of an equivalent power source current flowing in a power source current, from circuit information of the LSI chip; an estimating step of considering at least one of power source information of a power source for supplying a current to the LSI chip, package information of a package for the semiconductor chip, and measurement system information of a measurement system for measuring characteristics of the semiconductor chip, as analysis control information, and of estimating total information in which the analysis control information is reflected in the circuit information, as an equivalent circuit; and a total information analyzing step of performing analysis in accordance with the total information which is estimated in the estimating step.
    • 一种分析其中分析来自LSI的电磁干扰量的电磁干扰的方法,其中所述方法包括:等效电源电流信息计算步骤,从电路中计算流过电源电流的等效电源电流的信息, LSI芯片的信息; 考虑将用于向LSI芯片提供电流的电源的电源信息,半导体芯片的封装的封装信息以及用于测量半导体芯片的特性的测量系统的测量系统信息中的至少一个的估计步骤 作为分析控制信息,并且将分析控制信息反映在电路信息中的总信息估计为等效电路; 以及总信息分析步骤,根据在估计步骤中估计的总信息进行分析。