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    • 21. 发明申请
    • SEMICONDUCTOR MEMORY
    • 半导体存储器
    • US20100246309A1
    • 2010-09-30
    • US12684998
    • 2010-01-11
    • Yasushi SHIMONOKaoru YoshidaAkira Ohta
    • Yasushi SHIMONOKaoru YoshidaAkira Ohta
    • G11C8/08
    • G11C8/08G11C7/04G11C7/14G11C7/22G11C11/413
    • An SRAM module includes bit cells arranged within an SRAM array of N×M, and a replica SRAM cell array of a replica bit cell used for bit cell performance measurement, and can control the number of replica bit cells used for performance measurement. When the clock generator circuit generates an internal pulse upon receiving a clock, the clock generator circuit generates a leading edge of a pulse by a clock (clk), and generates a trailing edge thereof by a delay circuit including the delay of the replica bit cells. The internal pulse is used for controlling the activation time of the word lines for selecting the memory cell, and the timing of a bit line control circuit (a bit line precharger circuit, an address logic circuit, and a sense amplifier circuit).
    • SRAM模块包括布置在N×M的SRAM阵列内的比特单元和用于比特单元性能测量的复制比特单元的复制SRAM单元阵列,并且可以控制用于性能测量的复制比特单元的数量。 当时钟发生器电路在接收时钟时产生内部脉冲,时钟发生器电路通过时钟(clk)产生脉冲的前沿,并通过包括复制位单元的延迟的延迟电路产生其后沿 。 内部脉冲用于控制用于选择存储单元的字线的激活时间,以及位线控制电路(位线预充电器电路,地址逻辑电路和读出放大器电路)的定时。
    • 23. 发明授权
    • Semiconductor memory including a circuit for selecting redundant memory cells
    • 半导体存储器,包括用于选择冗余存储单元的电路
    • US06563750B2
    • 2003-05-13
    • US10134521
    • 2002-04-30
    • Hiroshi OtoriHiroki FujisawaMinoru EbiharaSeiji NaruiMasanori IsodaAkira Ohta
    • Hiroshi OtoriHiroki FujisawaMinoru EbiharaSeiji NaruiMasanori IsodaAkira Ohta
    • G11C700
    • G11C29/70G11C5/025G11C5/063
    • Relief units (UNITb) each having electrically programmable electric fuses for storing information according to the difference in threshold voltage, and an address comparator are disposed in a second area, and relief units (UNITa) each having laser fuses and an address comparator are disposed in a first area. Both areas are adjacent to each other along an address signal wiring for each comparator, and the address signal wiring is laid out linearly. Even if the electric fuses and the laser fuses are caused to coexist for relief address storage, the difference between by-chip occupied areas due to the difference between their configurations can be adjusted based on the size extending in the direction of the address signal wiring, and an increase in the by-chip occupied area can be restrained to the utmost from a layout viewpoint.
    • 每个具有用于根据阈值电压差存储信息的电可编程电保险丝和地址比较器的排气单元(UNITb)设置在第二区域中,并且每个具有激光熔丝和地址比较器的释放单元(UNITa)设置在 第一个区域。 两个区域沿着每个比较器的地址信号布线彼此相邻,并且地址信号布线线性布置。 即使电保险丝和激光熔丝被共存用于释放地址存储,也可以基于在地址信号布线的方向上延伸的大小来调整由于它们的配置之间的差异造成的片外占用面积之间的差异, 并且可以从布局的观点最大限度地抑制片上占用面积的增加。
    • 24. 发明授权
    • High frequency power amplifier
    • 高频功率放大器
    • US06177841B1
    • 2001-01-23
    • US09258069
    • 1999-02-26
    • Akira OhtaAkira InoueTetsuya Heima
    • Akira OhtaAkira InoueTetsuya Heima
    • H03F3191
    • H03F3/601H01L2224/48091H03F1/0205H03F1/565H01L2924/00014
    • A high frequency power amplifier with reduced power loss and improved power amplification efficiency has an output matching circuit providing an open circuit to a second harmonic and a short circuit to a third harmonic of a high frequency signal. This is accomplished by, for example, adjusting lengths of a drain bias line and a plurality of signal lines so that the phase of S parameter S11 (input reflection coefficient) to the second harmonic is from −80° to 140°, and the phase of S parameter S11 to the third harmonic is from 160° to 220°. The line length of each line in an input matching circuit is also adjusted so that the phase of S parameter S22 (output reflection coefficient) at the fundamental frequency is between +5° to −75°.
    • 具有降低的功率损耗和提高的功率放大效率的高频功率放大器具有输出匹配电路,其提供对二次谐波的开路和与高频信号的三次谐波的短路。 这通过例如调整漏极偏置线和多条信号线的长度来实现,使得S参数S11(输入反射系数)相对于二次谐波的相位为-80°至140°,相位 S参数S11与三次谐波的关系为160°〜220°。 也调整输入匹配电路中每条线的线路长度,使得基频下的S参数S22(输出反射系数)的相位在+ 5°至-75°之间。
    • 26. 发明授权
    • Semiconductor device
    • 半导体器件
    • US5834960A
    • 1998-11-10
    • US880767
    • 1997-06-23
    • Tetsuya HeimaNorio HigashisakaAkira Ohta
    • Tetsuya HeimaNorio HigashisakaAkira Ohta
    • H03H11/26H03K5/13
    • H03K5/133H03H11/265H03K5/131
    • A semiconductor device includes an input terminal and an output terminal; a delay circuit including N (N=integer) unit delay circuits connected in series between the input terminal and the output terminal, earn unit delay circuit including first and second two-input NOR or NAND circuits connected in series, the second two-input NOR or NAND circuit being nearer to the output terminal than the first two-input NOR or NAND circuit, a first input of each first two-input NOR or NAND circuit being connected to the input terminal, and an output of each first two-input NOR or NAND circuit being connected to a first input of the second two-input NOR or NAND circuit of each unit delay circuit; and a control circuit outputting individual control signals, each control signal being applied to a respective second input of the second two-input NOR or NAND circuit included in each unit delay circuit, wherein delay time in signal transmission from the input terminal to the output terminal varies in response to the control signals. The number of elements per unit resolution is reduced, and variations in the delay time are reduced by the reduced element number so the linearity of the delay circuit is improved. Further, the layout is simplified as compared with the conventional delay circuit.
    • 半导体器件包括输入端子和输出端子; 包括在输入端子和输出端子之间串联连接的N(N =整数)个单位延迟电路的延迟电路,包括串联连接的第一和第二双输入NOR或NAND电路的单位延迟电路,第二双输入NOR 或NAND电路比第一双输入NOR或NAND电路更接近输出端,每个第一双输入NOR或NAND电路的第一输入连接到输入端,并且每个第一双输入NOR 或NAND电路连接到每个单位延迟电路的第二双输入NOR或NAND电路的第一输入; 以及输出各个控制信号的控制电路,每个控制信号被施加到包括在每个单位延迟电路中的第二双输入NOR或NAND电路的相应的第二输入,其中从输入端到输出端的信号传输的延迟时间 响应于控制信号而变化。 降低了每单位分辨率的元件数量,并且通过减少元件数量来减小延迟时间的变化,从而提高了延迟电路的线性度。 此外,与传统的延迟电路相比,布局被简化。