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    • 13. 发明授权
    • Synchronous signal generation circuit
    • 同步信号发生电路
    • US06337834B1
    • 2002-01-08
    • US09706842
    • 2000-11-07
    • Katsuaki IsobeHironobu AkitaSatoshi EtoHaruki Toda
    • Katsuaki IsobeHironobu AkitaSatoshi EtoHaruki Toda
    • G11C800
    • G11C7/225G11C7/22G11C7/222
    • The present invention provides a synchronous signal generation circuit that can be operated with a high accuracy, at a high speed and with a low power consumption without being affected by the process dispersion. The synchronous signal generation circuit of the present invention comprises a real circuit including an input receiver, an off-chip driver, and a mirror-type synchronous circuit, and a dummy circuit for determining the delay time in the mirror-type synchronous circuit, the dummy circuit including an input receiver and an off-chip driver. In the dummy circuit, the input signal is supplied first to the off-chip driver and, then, to the input receiver so as to permit the signal between the off-chip driver and the input receiver to be a small amplitude signal. It follows that the real circuit and the dummy circuit are equal to each other in the signal levels in the input and output portions of each of the input receiver and the off-chip driver. The particular construction makes it possible to minimize the error in the delay time between the real circuit and the dummy circuit relative to the process dispersion so as to improve the synchronizing accuracy and, thus, to achieve a high speed I/O.
    • 本发明提供一种同步信号发生电路,其能够以高精度,高速度且低功耗地操作,而不受处理分散的影响。 本发明的同步信号发生电路包括实际电路,其包括输入接收器,片外驱动器和反射镜型同步电路,以及用于确定镜式同步电路中的延迟时间的虚拟电路, 虚拟电路包括输入接收器和片外驱动器。 在虚拟电路中,首先将输入信号提供给片外驱动器,然后提供给输入接收器,以允许片外驱动器和输入接收器之间的信号为小振幅信号。 因此,实际电路和虚拟电路在每个输入接收器和片外驱动器的输入和输出部分的信号电平中彼此相等。 该特定结构使得可以将实际电路和虚拟电路之间相对于处理色散的延迟时间的误差最小化,从而提高同步精度,从而实现高速I / O。
    • 14. 发明授权
    • Delay control circuit synchronous with clock signal
    • 延时控制电路与时钟信号同步
    • US06292411B1
    • 2001-09-18
    • US09537424
    • 2000-03-27
    • Masahiro KamoshidaHironobu Akita
    • Masahiro KamoshidaHironobu Akita
    • G11C700
    • G11C7/222G11C7/22H03K5/135H04L7/0008H04L7/0037
    • A delay line for forward pulse has a plurality of delay units for forward pulse. A delay line for backward pulse has a plurality of delay units for backward pulse. In the delay line for backward pulse, a pulse signal is propagated in an opposite direction to a direction of the propagation in the delay line for forward pulse. A direction from an input terminal to an output terminal in the delay units for forward pulse is set to be parallel to a direction of the delay line for forward pulse. A direction from an input terminal to an output terminal in the delay units for backward pulse is set to be parallel to a direction of the delay line for backward pulse. The directions from the input terminal to the output terminal in two adjacent ones of the delay units for forward pulse are set to be opposite to one another. The directions from the input terminal to the output terminal in two adjacent ones of the delay units for backward pulse are set to be opposite to one another.
    • 用于正向脉冲的延迟线具有用于正向脉冲的多个延迟单元。 用于反向脉冲的延迟线具有用于反向脉冲的多个延迟单元。 在用于反向脉冲的延迟线中,脉冲信号在与正向脉冲的延迟线中的传播方向相反的方向上传播。 用于正向脉冲的延迟单元中的从输入端子到输出端子的方向设置为与正向脉冲的延迟线的方向平行。 用于反向脉冲的延迟单元中的从输入端子到输出端子的方向设置为与用于反向脉冲的延迟线的方向平行。 从正向脉冲的两个相邻延迟单元中的输入端子到输出端子的方向被设定为彼此相反。 在后向脉冲的两个相邻的延迟单元中从输入端子到输出端子的方向被设定为彼此相反。
    • 15. 发明授权
    • Word line driver and semiconductor device
    • 字线驱动器和半导体器件
    • US5886942A
    • 1999-03-23
    • US964398
    • 1997-11-06
    • Hironobu Akita
    • Hironobu Akita
    • G11C11/407G11C8/08G11C11/408H01L21/8242H01L27/108G11C8/00
    • G11C8/08G11C11/4085
    • A word line driver includes a CMOS inverter constituted by a P channel MOS transistor in which a row decode signal having the amplitude of an internal logic power supply voltage is supplied to a gate, one end of the source-drain current path is connected to a node to which a power supply voltage (VWLh) is applied, and the other end of the source-drain current path is connected to a word line, and an N channel MOS transistor in which the input signal is supplied to a gate, one end of the source-drain current path is connected to a node to which a power supply voltage (VWLl) having a negative value is applied, and the other end of the source-drain current path is connected to the word line. The circuit threshold voltage of the CMOS inverter is set to be larger than the circuit threshold voltages of other CMOS inverters which operate using internal logic power supply voltages.
    • 字线驱动器包括由P沟道MOS晶体管构成的CMOS反相器,其中具有内部逻辑电源电压的幅度的行解码信号被提供给栅极,源极 - 漏极电流路径的一端连接到 施加电源电压(VWLh)的节点,源极 - 漏极电流路径的另一端连接到字线,并且其中输入信号被提供给栅极的N沟道MOS晶体管,一端 源极 - 漏极电流路径连接到其上施加了负值的电源电压(VWL1)的节点,并且源极 - 漏极电流路径的另一端连接到字线。 将CMOS反相器的电路阈值电压设置为大于使用内部逻辑电源电压工作的其他CMOS反相器的电路阈值电压。
    • 17. 发明授权
    • Clock control circuit and transmitter
    • 时钟控制电路和变送器
    • US09584228B2
    • 2017-02-28
    • US12747807
    • 2009-12-09
    • Hironobu Akita
    • Hironobu Akita
    • H04B15/04
    • H04B15/04H04B2215/067
    • A transmitter 1 comprises a clock generation portion 4, FIFO portion 6, and serial signal creation portion 7. The clock generation portion 4 performs modulation by spectrum spreading of a reference clock CKref, and generates a first clock CK1 with a high modulation factor and a second clock CK2 with a low modulation factor. The FIFO portion 6 takes as inputs the first clock CK1 which has been output from the clock generation portion 4 to a data generation portion 2 and output from the data generation portion 2, a parallel data signal which has been synchronized with the first clock CK1 in the data generation portion 2 and output, and the second clock CK2 output from the clock generation portion 4, and synchronizes the parallel data signal Pdata with the second clock CK2 and outputs the parallel data signal Pdata. The serial signal creation portion 7 converts a parallel data signal PRdata into a serial data signal Sdata.
    • 发射机1包括时钟产生部分4,FIFO部分6和串行信号产生部分7.时钟产生部分4通过参考时钟CKref的频谱扩展执行调制,并产生具有高调制因数的第一时钟CK1和 具有低调制因子的第二时钟CK2。 FIFO部分6将已经从时钟产生部分4输出的第一时钟CK1作为输入,作为数据生成部分2输出,并从数据生成部分2输出与第一时钟CK1同步的并行数据信号 数据产生部分2和从时钟产生部分4输出的第二时钟CK2,并行并行数据信号Pdata与第二时钟CK2并输出并行数据信号Pdata。 串行信号产生部分7将并行数据信号PRdata转换为串行数据信号Sdata。