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    • 10. 发明专利
    • Simulation system and simulator for logical circuit
    • 逻辑电路仿真系统和仿真器
    • JPS61110071A
    • 1986-05-28
    • JP23278384
    • 1984-11-02
    • Matsushita Electric Ind Co LtdMitsubishi Electric CorpSanyo Electric Co LtdSharp Corp
    • TERADA HIRONORIASADA KATSUHIKONISHIKAWA HIROAKIHARA HIDEJIAKECHI MITSUOOKAMOTO TOSHIYAASANO HAJIME
    • G01R31/28G06F17/50G06F19/00
    • G06F17/5022
    • PURPOSE: To achieve a higher speed of computation, by a method wherein input information of logical circuit components and a signal level are computed at each time of starting and ending the signal level and only when there are changes in the output signal level, the output signal level and the times of starting and ending it are applied sequentially to the components.
      CONSTITUTION: With an AND gates of three inputs 1, 2 and 3, the outputs and computed separately at the time (a), (b), (c) and the like when input signals 1, 2 and 3 rise or fall. Only at times (c) and (d) when the outputs change, the output signal and times of starting and ending the level are sent out to logical circuit components, for example, gates such as AND, NAND, OR and NOR gates, buffers and FFs. In this manner, as an output is produced only when outputs of the components change, the number of packets flowing through the input processing section - output processing section - input processing section... can be reduce to the minimum necessary and as the computation is done only when the signal changes, the frequency of data processing can be cut drastically thereby achieving a higher speed of the simulation.
      COPYRIGHT: (C)1986,JPO&Japio
    • 目的:为了实现更高的计算速度,通过一种方法,其中在开始和结束信号电平的每个时间仅计算逻辑电路分量的输入信息和信号电平,并且仅当输出信号电平有变化时,输出 信号电平和开始和结束的时间顺序地应用于组件。 构成:输入信号1,2和3的时间(a),(b),(c)等分别输入和输出三个输入1,2和3的“与”门。 仅在时间(c)和(d)时,输出变化时,输出信号和开始和结束电平的时间被发送到逻辑电路部件,例如门,如AND,NAND,或和和门,缓冲器 和FFs。 以这种方式,由于仅当组件的输出改变时才产生输出,所以流经输入处理部分 - 输出处理部分 - 输入处理部分的分组数量可以减少到必要的最小值,并且计算是 只有当信号变化时才能完成数据处理的频率,从而实现更高的仿真速度。