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    • 3. 发明专利
    • Method and circuit for producing high-speed count
    • 生产高速计数器的方法和电路
    • JP2006314134A
    • 2006-11-16
    • JP2006203465
    • 2006-07-26
    • Micron Technol Incマイクロン・テクノロジー・インコーポレーテッドMicron Technology,Inc.
    • MANNING TROY A
    • H03K21/00H03K23/42H03K23/00H03K23/44H03K23/54
    • H03K23/44H03K23/54
    • PROBLEM TO BE SOLVED: To provide a high-speed counter circuit which produces digital counts, with a plurality of bits to control the timing of operations in a memory device.
      SOLUTION: A counter circuit includes a series of registers driven by two phase shifted clocks. A clock generator in the counter circuit generates four asymmetric clock signals for driving each of the registers. The registers are formed from input and output stages, each having two sets of switches. The first set of switches in each stage provides a supply voltage to a stage output, in response to the asymmetric clocks. The second set of switches supplies a ground to the stage output, in response to the asymmetric clocks. To accelerate response of the switching circuits, isolation switches decouple the first set of switches in each pair from the stage output during switching of the second set of switches, thereby removing the load of stage output due to the second set of switches.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种产生数字计数的高速计数器电路,具有多个位以控制存储器件中的操作时序。 解决方案:一个计数器电路包括由两个相移时钟驱动的一系列寄存器。 计数器电路中的时钟发生器产生用于驱动每个寄存器的四个非对称时钟信号。 寄存器由输入和输出级形成,每级具有两组开关。 响应于不对称时钟,每个级中的第一组开关为电平输出提供电源电压。 响应于不对称时钟,第二组开关为舞台输出提供接地。 为了加速开关电路的响应,隔离开关在第二组开关切换期间将每对开关中的第一组开关与级输出分离,从而消除由于第二组开关而产生的级输出的负载。 版权所有(C)2007,JPO&INPIT
    • 9. 发明专利
    • Device and method for generating clock signal
    • 用于产生时钟信号的装置和方法
    • JP2009159296A
    • 2009-07-16
    • JP2007334980
    • 2007-12-26
    • Panasonic Corpパナソニック株式会社
    • TOKUNAGA YUSUKESAKIYAMA SHIROMICHIMASA SHIROMATSUMOTO AKINORI
    • H03K5/135G06F1/06H03K5/15
    • H03K5/135H03K5/1565H03K23/54H03K2005/00241
    • PROBLEM TO BE SOLVED: To generate a clock signal having a desired phase from input multi-phase clock signals with a relatively small circuit scale. SOLUTION: In a device for generating a clock signal having a desired phase from input multi-phase clock signals, an intermediate clock generator (11) generates, by using one of the input multi-phase clock signals as a reference clock signal, multi-phase intermediate clock signals in which one cycle is equal to a plurality of cycles of the reference clock signal. A first phase selector (12) selects one of the multi-phase intermediate clock signals. A second phase selector (13) selects one of the multi-phase clock signals. A latch circuit (14) latches the intermediate clock signal selected by the first phase selector (12) with the clock signal selected by the second phase selector (13). COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:从具有相对小的电路规模的输入多相时钟信号产生具有所需相位的时钟信号。 解决方案:在用于从输入多相时钟信号产生期望相位的时钟信号的装置中,中间时钟发生器(11)通过使用输入多相时钟信号之一作为基准时钟信号 ,其中一个周期等于参考时钟信号的多个周期的多相中间时钟信号。 第一相选择器(12)选择多相中间时钟信号之一。 第二相选择器(13)选择多相时钟信号之一。 锁存电路(14)将由第一相位选择器(12)选择的中间时钟信号与由第二相位选择器(13)选择的时钟信号锁存。 版权所有(C)2009,JPO&INPIT