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    • 42. 发明专利
    • Nonvolatile storage device
    • 非易失存储器件
    • JP2013041654A
    • 2013-02-28
    • JP2011179624
    • 2011-08-19
    • Toshiba Corp株式会社東芝
    • SHIINO YASUHIROSAKANIWA MANABUIRIE SHIGEFUMIUENO HIROTAKA
    • G11C16/02G11C16/04
    • G11C16/10G11C11/5628G11C16/12G11C16/3418
    • PROBLEM TO BE SOLVED: To provide a nonvolatile storage device that has a high operating speed.SOLUTION: A nonvolatile storage device related to one embodiment comprises: a driving circuit for outputting a writing voltage; and a memory cell in which data are written by being applied with the writing voltage. In a case where the driving circuit repeats an output of the writing voltage n times, n is an integer 3 or larger, where the writing voltage in an output at a k-th time, (k is an integer 2 or larger and n or smaller), is defined as Vpgm(k), a constant voltage is defined as Δv1, a time for continuing the output at the k-th time is defined as Tpgm(k) and a fixed time is defined as Δt1, the driving circuit outputs the writing voltage such that Vpgm(k), Δv1, Tpgm(k) and Δt1 satisfy the following mathematical expressions; Vpgm(k)=Vpgm(k-1)+Δv1 and Tpgm(k)=Tpgm(k-1)+Δt1.
    • 要解决的问题:提供一种具有高操作速度的非易失性存储装置。 解决方案:与一个实施例相关的非易失性存储装置包括:用于输出写入电压的驱动电路; 以及通过施加写入电压来写入数据的存储单元。 在驱动电路重复写入电压的输出n次的情况下,n为整数3以上,其中第k次输出的写入电压为(k为2以上的整数,n或 定义为Vpgm(k),将恒定电压定义为Δv1,将第k次输出的持续时间定义为Tpgm(k),将固定时间定义为Δt1,驱动电路 输出写入电压,使得Vpgm(k),Δv1,Tpgm(k)和Δt1满足以下数学表达式: Vpgm(k)= Vpgm(k-1)+Δv1和Tpgm(k)= Tpgm(k-1)+Δt1。 版权所有(C)2013,JPO&INPIT
    • 50. 发明专利
    • The semiconductor integrated circuit
    • 半导体集成电路
    • JP2012155818A
    • 2012-08-16
    • JP2011016261
    • 2011-01-28
    • Toshiba Corp株式会社東芝
    • NISHIYAMA TAKAHIDE
    • G11C16/02G06F12/16G11C16/06
    • G11C16/3418G11C16/06G11C16/26
    • PROBLEM TO BE SOLVED: To achieve suppression of read disturbance and improvement in latency.SOLUTION: A semiconductor integrated circuit includes: an input register 21 which holds data in first units, read out of a memory cell array, in second units; a state counter 22 which counts bit states of the data held in the input register 21; a frame size setting register 26 which holds the first unit; an input data counter 28 which determines whether the total of data input to the input register 21 reaches the first unit; an accumulation circuit 33 which accumulates the value counted by the bit state counter 22; a threshold register 27 which holds a threshold for determining whether an erasure area of the memory cell is accessed; a comparison circuit 29 which compares an accumulation value of the accumulation circuit 33 with the threshold in the threshold register 27 to determine whether the erasure area is accessed; and a result storage register which holds a result of the comparison circuit 29.
    • 要解决的问题:实现读取干扰的抑制和延迟的提高。 解决方案:半导体集成电路包括:输入寄存器21,其以第二单元保存以存储单元阵列读出的第一单元的数据; 状态计数器22,其对保持在输入寄存器21中的数据的位状态进行计数; 保持第一单元的帧大小设置寄存器26; 输入数据计数器28,确定输入到输入寄存器21的数据总数是否到达第一单元; 累积电路33,累加由位状态计数器22计数的值; 保持用于确定存储器单元的擦除区域是否被访问的阈值的阈值寄存器27; 比较电路29,其将累积电路33的累加值与阈值寄存器27中的阈值进行比较,以确定是否访问擦除区域; 以及保存比较电路29的结果的结果存储寄存器。版权所有(C)2012,JPO&INPIT