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    • 92. 发明授权
    • Timing control circuit and semiconductor storage device
    • 定时控制电路和半导体存储设备
    • US07772911B2
    • 2010-08-10
    • US12208978
    • 2008-09-11
    • Akira IdeYasuhiro TakaiTomonori SekiguchiRiichiro TakemuraSatoru AkiyamaHiroaki Nakaya
    • Akira IdeYasuhiro TakaiTomonori SekiguchiRiichiro TakemuraSatoru AkiyamaHiroaki Nakaya
    • G06F1/04
    • H03K5/135G11C7/04G11C7/1072G11C7/222G11C11/4076G11C19/00
    • Disclosed is a timing control circuit that receives a first clock having a period T1, a group of second clocks of L different phases spaced apart from each other at substantially equal intervals and selection signals m, n supplied thereto and generates a fine timing signal delayed from the rising edge of the first clock signal by a delay td of approximately td=m·T1+n·(T2/L). The timing control circuit includes a coarse delay circuit and a fine delay circuit. The coarse delay circuit includes a counter for counting a rising edge of the first clock signal after an activate signal is activated and generates a coarse timing signal whose amount of delay from the first clock signal is approximately m·T1. The fine delay circuit comprises L-number of multiphase clock control delay circuits disposed in parallel, delays by n·T2/L the timing of sampling of the coarse timing signal by respective clocks of the group of L-phase second clocks, and takes the OR among the resulting delayed pulses to thereby produce the fine timing signal.
    • 公开了一种定时控制电路,其接收具有周期T1的第一时钟,以相等间隔彼此间隔开的L个不同相位的一组第二时钟,以及提供给其的选择信号m,n,并产生从 第一时钟信号的上升沿大约为td = m·T1 + n·(T2 / L)的延迟td。 定时控制电路包括粗延迟电路和精细延迟电路。 粗略延迟电路包括用于在激活信号被激活之后对第一时钟信号的上升沿进行计数的计数器,并产生其第一时钟信号的延迟量大约为m·T1的粗略定时信号。 精细延迟电路包括L个并联设置的多相时钟控制延迟电路,通过n·T2 / L延迟由L组第二时钟组的相应时钟对粗略定时信号进行采样的定时, 或者产生延迟脉冲,从而产生精细定时信号。
    • 93. 发明授权
    • Semiconductor memory device
    • 半导体存储器件
    • US07706208B2
    • 2010-04-27
    • US12354549
    • 2009-01-15
    • Riichiro TakemuraTomonori Sekiguchi
    • Riichiro TakemuraTomonori Sekiguchi
    • G11C8/00
    • G11C8/12G11C5/025G11C5/04G11C7/18G11C11/4097H01L25/0657H01L27/0207H01L27/10814H01L2224/4826H01L2924/13091H01L2924/00
    • If memory cell blocks are laid out in a conventional manner to create a memory chip with a capacity of an odd power of 2 by using memory cells whose aspect ratio is 1:2, the chip will take a 1:1 shape and become difficult to enclose in a package of a 1:2 shape. In addition, such conventional layout of memory cell blocks to form the 1:2 shape causes the area of a peripheral circuit region to be limited by the memory blocks, pads to be arranged collectively in the central section of the chip, and wiring to become dense during the enclosure of the chip in the package.In this invention, therefore, four memory blocks, BANK0, BANK1, BANK2, BANK3, BANK3, are constructed into an L shape and then these memory blocks are properly combined and arranged to construct a chip of nearly a 1:2 shape in terms of aspect ratio.
    • 如果通过使用纵横比为1:2的存储单元,以常规方式布置存储单元块以创建具有2的奇数功率的容量的存储芯片,则芯片将采取1:1的形状并变得难以 以1:2的形状包装。 此外,存储单元块的这种传统布局形成1:2形状会导致外围电路区域的区域受到存储块的限制,焊盘将被集中布置在芯片的中心部分中,并且布线成为 密封在芯片封装中的封装。 因此,在本发明中,将四个存储块BANK0,BANK1,BANK2,BANK3,BANK3构造成L形,然后将这些存储块适当地组合并布置成构成近似1:2形状的芯片 长宽比。