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    • 86. 发明授权
    • Semiconductor memory device which prevents destruction of data
    • 防止数据破坏的半导体存储器件
    • US07394691B2
    • 2008-07-01
    • US11498142
    • 2006-08-03
    • Noboru ShibataHiroshi Sukegawa
    • Noboru ShibataHiroshi Sukegawa
    • G11C11/34G11C7/00G11C29/00
    • G11C11/5642G11C11/5628G11C16/0483
    • A plurality of memory cells each storing n values (n is a natural number which is not smaller than 3) are arranged in a matrix form in a memory cell array, and each memory cell is connected with a word line and a bit line. Each memory cell stores the n-valued data by a first write operation and a second write operation. A read section sets a potential of a word line, and reads data from a memory cell in the memory cell array. If data read by the read section and written in the second write operation includes an uncorrectable error, a control section changes a potential of a word line supplied to the read section when reading data written in the first write operation.
    • 每个存储n个值的多个存储单元(n是不小于3的自然数)以矩阵形式布置在存储单元阵列中,并且每个存储单元与字线和位线连接。 每个存储单元通过第一写操作和第二写操作来存储n值数据。 读取部分设置字线的电位,并从存储器单元阵列中的存储单元读取数据。 如果由读取部分读取并写入第二写入操作的数据包括不可校正的错误,则当读取在第一写入操作中写入的数据时,控制部分改变提供给读取部分的字线的电位。
    • 87. 发明授权
    • Nonvolatile semiconductor memory device
    • 非易失性半导体存储器件
    • US07295468B2
    • 2007-11-13
    • US11401016
    • 2006-04-05
    • Noboru Shibata
    • Noboru Shibata
    • G11C11/34
    • G11C11/5628G11C11/5621G11C16/0483G11C16/3454G11C2211/5621G11C2211/5642
    • A page mode multi-level NAND-type memory employs two different verify levels per data state and comprises a first data storage circuit which is connected to a memory cell and which stores externally inputted data of a first logic level or a second logic level, a second data storage circuit which is connected to the memory cell and which stores the data of the first logic level or second logic level read from the memory cell, and a control circuit which controls the memory cell and the first and second data storage circuits and which reproduces the externally inputted data and writing the data into the memory cell.
    • 页面模式多级NAND型存储器对每个数据状态采用两个不同的验证电平,并且包括连接到存储器单元并且存储外部输入的第一逻辑电平或第二逻辑电平的数据的第一数据存储电路, 第二数据存储电路,连接到存储单元,并存储从存储单元读取的第一逻辑电平或第二逻辑电平的数据;以及控制电路,其控制存储单元以及第一和第二数据存储电路, 再现外部输入的数据并将数据写入存储单元。
    • 88. 发明申请
    • NONVOLATILE SEMICONDUCTOR MEMORY DEVICE
    • 非易失性半导体存储器件
    • US20070133291A1
    • 2007-06-14
    • US11610193
    • 2006-12-13
    • Yasuyuki FUKUDANoboru Shibata
    • Yasuyuki FUKUDANoboru Shibata
    • G11C16/04
    • G11C16/0483G11C16/04G11C29/82
    • A nonvolatile semiconductor memory device of the present invention is characterized in that, when data is written to a flag cell area, every other flag cell in the direction of one bit line BL among a plurality of flag cells 15 connected to the bit line BL is written with data and every other flag cell in the direction of one word line WL among a plurality of flag cells 15 connected to the word line WL is written with data. The arrangement as described above prevents a flag cell 15 from being influenced by the capacitive coupling of a neighboring flag cell 15 adjacent to the flag cell 15 in the direction of the word line WL. Thus, data (flag data) memorized by the flag cell 15 can have improved reliability.
    • 本发明的非易失性半导体存储器件的特征在于,当数据被写入标志单元区域时,连接到位线BL的多个标志单元15中的一个位线BL的方向上的每隔一个标志单元是 在与字线WL连接的多个标志单元15中的一个字线WL的方向上用数据和每隔一个的标志单元写入数据。 如上所述的布置防止了标志单元15受到在字线WL的方向上与标志单元15相邻的相邻标记单元15的电容耦合的影响。 因此,由标志单元15存储的数据(标志数据)可以提高可靠性。
    • 90. 发明授权
    • Semiconductor memory device and electric device with the same
    • 半导体存储器件和电器件相同
    • US07164605B2
    • 2007-01-16
    • US11305193
    • 2005-12-19
    • Koichi KawaiTomoharu TanakaNoboru Shibata
    • Koichi KawaiTomoharu TanakaNoboru Shibata
    • G11C16/06
    • G11C16/3468
    • A semiconductor memory device includes: a plurality of cell array blocks in each of which a plurality of memory cells are arranged; address decode circuits for selecting memory cells in the cell array blocks; sense amplifier circuits for reading cell data of the cell array blocks; and a busy signal generation circuit for generating a busy signal to the chip external, wherein in a first read cycle selecting a first area in a first cell array block, cell data read operations for the first area of the first cell array block and a second area of a second cell array block are simultaneously executed, while the busy signal generation circuit generates a true busy signal, and then a read data output operation is executed for outputting the read out data of the first area held in the sense amplifier circuits to the chip external, and in a second read cycle selecting the second area in the second cell array block, after the busy signal generation circuit has output a dummy busy signal shorter in time length than the true busy signal without executing cell data read operation, a read data output operation is executed for outputting the read out data of the second area held in the sense amplifier circuits to the chip external.
    • 半导体存储器件包括:多个单元阵列块,每个单元阵列块中布置有多个存储单元; 用于选择单元阵列块中的存储单元的地址解码电路; 用于读取单元阵列块的单元数据的读出放大器电路; 以及用于向芯片外部产生忙信号的忙信号产生电路,其中在第一读周期中选择第一单元阵列块中的第一区,对第一单元阵列块的第一区进行单元数据读操作, 同时执行第二单元阵列块的区域,而忙信号产生电路产生真正的忙信号,然后执行读数据输出操作,以将保持在读出放大器电路中的第一区域的读出数据输出到 芯片外部,并且在第二读取周期中选择第二单元阵列块中的第二区域,在忙信号产生电路在不执行单元数据读取操作的情况下输出比真实忙信号更短的时间长度的虚拟忙信号,读取 执行数据输出操作,以将保持在读出放大器电路中的第二区域的读出数据输出到芯片外部。